ember.js

// Version: v1.0.0-pre.2
// Last commit: b851567 (2012-10-25 12:56:33 -0700)


(function() {
/*global __fail__*/

/**
Ember Debug

@module ember
@submodule ember-debug
*/

/**
@class Ember
*/

if ('undefined' === typeof Ember) {
  Ember = {};

  if ('undefined' !== typeof window) {
    window.Em = window.Ember = Em = Ember;
  }
}

Ember.ENV = 'undefined' === typeof ENV ? {} : ENV;

if (!('MANDATORY_SETTER' in Ember.ENV)) {
  Ember.ENV.MANDATORY_SETTER = true; // default to true for debug dist
}

/**
  Define an assertion that will throw an exception if the condition is not
  met.  Ember build tools will remove any calls to Ember.assert() when
  doing a production build. Example:

      // Test for truthiness
      Ember.assert('Must pass a valid object', obj);
      // Fail unconditionally
      Ember.assert('This code path should never be run')

  @method assert
  @param {String} desc A description of the assertion.  This will become
    the text of the Error thrown if the assertion fails.

  @param {Boolean} test Must be truthy for the assertion to pass. If
    falsy, an exception will be thrown.
*/
Ember.assert = function(desc, test) {
  if (!test) throw new Error("assertion failed: "+desc);
};


/**
  Display a warning with the provided message. Ember build tools will
  remove any calls to Ember.warn() when doing a production build.

  @method warn
  @param {String} message A warning to display.
  @param {Boolean} test An optional boolean. If falsy, the warning
    will be displayed.
*/
Ember.warn = function(message, test) {
  if (!test) {
    Ember.Logger.warn("WARNING: "+message);
    if ('trace' in Ember.Logger) Ember.Logger.trace();
  }
};

/**
  Display a deprecation warning with the provided message and a stack trace
  (Chrome and Firefox only). Ember build tools will remove any calls to
  Ember.deprecate() when doing a production build.

  @method deprecate
  @param {String} message A description of the deprecation.
  @param {Boolean} test An optional boolean. If falsy, the deprecation
    will be displayed.
*/
Ember.deprecate = function(message, test) {
  if (Ember && Ember.TESTING_DEPRECATION) { return; }

  if (arguments.length === 1) { test = false; }
  if (test) { return; }

  if (Ember && Ember.ENV.RAISE_ON_DEPRECATION) { throw new Error(message); }

  var error;

  // When using new Error, we can't do the arguments check for Chrome. Alternatives are welcome
  try { __fail__.fail(); } catch (e) { error = e; }

  if (Ember.LOG_STACKTRACE_ON_DEPRECATION && error.stack) {
    var stack, stackStr = '';
    if (error['arguments']) {
      // Chrome
      stack = error.stack.replace(/^\s+at\s+/gm, '').
                          replace(/^([^\(]+?)([\n$])/gm, '{anonymous}($1)$2').
                          replace(/^Object.<anonymous>\s*\(([^\)]+)\)/gm, '{anonymous}($1)').split('\n');
      stack.shift();
    } else {
      // Firefox
      stack = error.stack.replace(/(?:\n@:0)?\s+$/m, '').
                          replace(/^\(/gm, '{anonymous}(').split('\n');
    }

    stackStr = "\n    " + stack.slice(2).join("\n    ");
    message = message + stackStr;
  }

  Ember.Logger.warn("DEPRECATION: "+message);
};



/**
  Display a deprecation warning with the provided message and a stack trace
  (Chrome and Firefox only) when the wrapped method is called.

  Ember build tools will not remove calls to Ember.deprecateFunc(), though
  no warnings will be shown in production.

  @method deprecateFunc
  @param {String} message A description of the deprecation.
  @param {Function} func The function to be deprecated.
*/
Ember.deprecateFunc = function(message, func) {
  return function() {
    Ember.deprecate(message);
    return func.apply(this, arguments);
  };
};


window.ember_assert         = Ember.deprecateFunc("ember_assert is deprecated. Please use Ember.assert instead.",               Ember.assert);
window.ember_warn           = Ember.deprecateFunc("ember_warn is deprecated. Please use Ember.warn instead.",                   Ember.warn);
window.ember_deprecate      = Ember.deprecateFunc("ember_deprecate is deprecated. Please use Ember.deprecate instead.",         Ember.deprecate);
window.ember_deprecateFunc  = Ember.deprecateFunc("ember_deprecateFunc is deprecated. Please use Ember.deprecateFunc instead.", Ember.deprecateFunc);

})();

// Version: v1.0.0-pre.2
// Last commit: b851567 (2012-10-25 12:56:33 -0700)


(function() {
/*globals Em:true ENV */

/**
@module ember
@submodule ember-metal
*/

/**
  All Ember methods and functions are defined inside of this namespace.
  You generally should not add new properties to this namespace as it may be
  overwritten by future versions of Ember.

  You can also use the shorthand "Em" instead of "Ember".

  Ember-Runtime is a framework that provides core functions for
  Ember including cross-platform functions, support for property
  observing and objects. Its focus is on small size and performance. You can
  use this in place of or along-side other cross-platform libraries such as
  jQuery.

  The core Runtime framework is based on the jQuery API with a number of
  performance optimizations.

  @class Ember
  @static
  @version 1.0.0-pre.2
*/

if ('undefined' === typeof Ember) {
  // Create core object. Make it act like an instance of Ember.Namespace so that
  // objects assigned to it are given a sane string representation.
  Ember = {};
}

// Default imports, exports and lookup to the global object;
var imports = Ember.imports = Ember.imports || this;
var exports = Ember.exports = Ember.exports || this;
var lookup  = Ember.lookup  = Ember.lookup  || this;

// aliases needed to keep minifiers from removing the global context
exports.Em = exports.Ember = Em = Ember;

// Make sure these are set whether Ember was already defined or not

Ember.isNamespace = true;

Ember.toString = function() { return "Ember"; };


/**
  @property VERSION
  @type String
  @default '1.0.0-pre.2'
  @final
*/
Ember.VERSION = '1.0.0-pre.2';

/**
  Standard environmental variables.  You can define these in a global `ENV`
  variable before loading Ember to control various configuration
  settings.

  @property ENV
  @type Hash
*/
Ember.ENV = Ember.ENV || ('undefined' === typeof ENV ? {} : ENV);

Ember.config = Ember.config || {};

// ..........................................................
// BOOTSTRAP
//

/**
  Determines whether Ember should enhances some built-in object
  prototypes to provide a more friendly API.  If enabled, a few methods
  will be added to Function, String, and Array.  Object.prototype will not be
  enhanced, which is the one that causes most trouble for people.

  In general we recommend leaving this option set to true since it rarely
  conflicts with other code.  If you need to turn it off however, you can
  define an ENV.EXTEND_PROTOTYPES config to disable it.

  @property EXTEND_PROTOTYPES
  @type Boolean
  @default true
*/
Ember.EXTEND_PROTOTYPES = Ember.ENV.EXTEND_PROTOTYPES;

if (typeof Ember.EXTEND_PROTOTYPES === 'undefined') {
  Ember.EXTEND_PROTOTYPES = true;
}

/**
  Determines whether Ember logs a full stack trace during deprecation warnings

  @property LOG_STACKTRACE_ON_DEPRECATION
  @type Boolean
  @default true
*/
Ember.LOG_STACKTRACE_ON_DEPRECATION = (Ember.ENV.LOG_STACKTRACE_ON_DEPRECATION !== false);

/**
  Determines whether Ember should add ECMAScript 5 shims to older browsers.

  @property SHIM_ES5
  @type Boolean
  @default Ember.EXTEND_PROTOTYPES
*/
Ember.SHIM_ES5 = (Ember.ENV.SHIM_ES5 === false) ? false : Ember.EXTEND_PROTOTYPES;

/**
  Empty function.  Useful for some operations.

  @method K
  @private
  @return {Object}
*/
Ember.K = function() { return this; };


// Stub out the methods defined by the ember-debug package in case it's not loaded

if ('undefined' === typeof Ember.assert) { Ember.assert = Ember.K; }
if ('undefined' === typeof Ember.warn) { Ember.warn = Ember.K; }
if ('undefined' === typeof Ember.deprecate) { Ember.deprecate = Ember.K; }
if ('undefined' === typeof Ember.deprecateFunc) {
  Ember.deprecateFunc = function(_, func) { return func; };
}

// These are deprecated but still supported

if ('undefined' === typeof ember_assert) { exports.ember_assert = Ember.K; }
if ('undefined' === typeof ember_warn) { exports.ember_warn = Ember.K; }
if ('undefined' === typeof ember_deprecate) { exports.ember_deprecate = Ember.K; }
if ('undefined' === typeof ember_deprecateFunc) {
  exports.ember_deprecateFunc = function(_, func) { return func; };
}

/**
  Previously we used `Ember.$.uuid`, however `$.uuid` has been removed from jQuery master.
  We'll just bootstrap our own uuid now.

  @property uuid
  @type Number
  @private
*/
Ember.uuid = 0;

// ..........................................................
// LOGGER
//

/**
  Inside Ember-Metal, simply uses the imports.console object.
  Override this to provide more robust logging functionality.

  @class Logger
  @namespace Ember
*/
Ember.Logger = imports.console || { log: Ember.K, warn: Ember.K, error: Ember.K, info: Ember.K, debug: Ember.K };


// ..........................................................
// ERROR HANDLING
//

/**
  A function may be assigned to `Ember.onerror` to be called when Ember internals encounter an error.
  This is useful for specialized error handling and reporting code.

  @event onerror
  @for Ember
  @param {Exception} error the error object
*/
Ember.onerror = null;

/**
  @private

  Wrap code block in a try/catch if {{#crossLink "Ember/onerror"}}{{/crossLink}} is set.

  @method handleErrors
  @for Ember
  @param {Function} func
  @param [context]
*/
Ember.handleErrors = function(func, context) {
  // Unfortunately in some browsers we lose the backtrace if we rethrow the existing error,
  // so in the event that we don't have an `onerror` handler we don't wrap in a try/catch
  if ('function' === typeof Ember.onerror) {
    try {
      return func.apply(context || this);
    } catch (error) {
      Ember.onerror(error);
    }
  } else {
    return func.apply(context || this);
  }
};

})();



(function() {
/**
  The purpose of the Ember Instrumentation module is
  to provide efficient, general-purpose instrumentation
  for Ember.

  Subscribe to a listener by using `Ember.subscribe`:

      Ember.subscribe("render", {
        before: function(name, timestamp, payload) {

        },

        after: function(name, timestamp, payload) {

        }
      });

  If you return a value from the `before` callback, that same
  value will be passed as a fourth parameter to the `after`
  callback.

  Instrument a block of code by using `Ember.instrument`:

      Ember.instrument("render.handlebars", payload, function() {
        // rendering logic
      }, binding);

  Event names passed to `Ember.instrument` are namespaced
  by periods, from more general to more specific. Subscribers
  can listen for events by whatever level of granularity they
  are interested in.

  In the above example, the event is `render.handlebars`,
  and the subscriber listened for all events beginning with
  `render`. It would receive callbacks for events named
  `render`, `render.handlebars`, `render.container`, or
  even `render.handlebars.layout`.

  @class Instrumentation
  @namespace Ember
  @static
*/
Ember.Instrumentation = {};

var subscribers = [], cache = {};

var populateListeners = function(name) {
  var listeners = [], subscriber;

  for (var i=0, l=subscribers.length; i<l; i++) {
    subscriber = subscribers[i];
    if (subscriber.regex.test(name)) {
      listeners.push(subscriber.object);
    }
  }

  cache[name] = listeners;
  return listeners;
};

var time = (function() {
	var perf = window.performance || {};
	var fn = perf.now || perf.mozNow || perf.webkitNow || perf.msNow || perf.oNow;
	// fn.bind will be available in all the browsers that support the advanced window.performance... ;-)
	return fn ? fn.bind(perf) : function() { return +new Date(); };
})();


Ember.Instrumentation.instrument = function(name, payload, callback, binding) {
  var listeners = cache[name];

  if (!listeners) {
    listeners = populateListeners(name);
  }

  if (listeners.length === 0) { return callback.call(binding); }

  var beforeValues = [], listener, ret, i, l;

  try {
    for (i=0, l=listeners.length; i<l; i++) {
      listener = listeners[i];
      beforeValues[i] = listener.before(name, time(), payload);
    }

    ret = callback.call(binding);
  } catch(e) {
    payload = payload || {};
    payload.exception = e;
  } finally {
    for (i=0, l=listeners.length; i<l; i++) {
      listener = listeners[i];
      listener.after(name, time(), payload, beforeValues[i]);
    }
  }

  return ret;
};

Ember.Instrumentation.subscribe = function(pattern, object) {
  var paths = pattern.split("."), path, regex = [];

  for (var i=0, l=paths.length; i<l; i++) {
    path = paths[i];
    if (path === "*") {
      regex.push("[^\\.]*");
    } else {
      regex.push(path);
    }
  }

  regex = regex.join("\\.");
  regex = regex + "(\\..*)?";

  var subscriber = {
    pattern: pattern,
    regex: new RegExp("^" + regex + "$"),
    object: object
  };

  subscribers.push(subscriber);
  cache = {};

  return subscriber;
};

Ember.Instrumentation.unsubscribe = function(subscriber) {
  var index;

  for (var i=0, l=subscribers.length; i<l; i++) {
    if (subscribers[i] === subscriber) {
      index = i;
    }
  }

  subscribers.splice(index, 1);
  cache = {};
};

Ember.Instrumentation.reset = function() {
  subscribers = [];
  cache = {};
};

Ember.instrument = Ember.Instrumentation.instrument;
Ember.subscribe = Ember.Instrumentation.subscribe;

})();



(function() {
/*jshint newcap:false*/

/**
@module ember-metal
*/

// NOTE: There is a bug in jshint that doesn't recognize `Object()` without `new`
// as being ok unless both `newcap:false` and not `use strict`.
// https://github.com/jshint/jshint/issues/392

// Testing this is not ideal, but we want to use native functions
// if available, but not to use versions created by libraries like Prototype
var isNativeFunc = function(func) {
  // This should probably work in all browsers likely to have ES5 array methods
  return func && Function.prototype.toString.call(func).indexOf('[native code]') > -1;
};

// From: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/map
var arrayMap = isNativeFunc(Array.prototype.map) ? Array.prototype.map : function(fun /*, thisp */) {
  //"use strict";

  if (this === void 0 || this === null) {
    throw new TypeError();
  }

  var t = Object(this);
  var len = t.length >>> 0;
  if (typeof fun !== "function") {
    throw new TypeError();
  }

  var res = new Array(len);
  var thisp = arguments[1];
  for (var i = 0; i < len; i++) {
    if (i in t) {
      res[i] = fun.call(thisp, t[i], i, t);
    }
  }

  return res;
};

// From: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/foreach
var arrayForEach = isNativeFunc(Array.prototype.forEach) ? Array.prototype.forEach : function(fun /*, thisp */) {
  //"use strict";

  if (this === void 0 || this === null) {
    throw new TypeError();
  }

  var t = Object(this);
  var len = t.length >>> 0;
  if (typeof fun !== "function") {
    throw new TypeError();
  }

  var thisp = arguments[1];
  for (var i = 0; i < len; i++) {
    if (i in t) {
      fun.call(thisp, t[i], i, t);
    }
  }
};

var arrayIndexOf = isNativeFunc(Array.prototype.indexOf) ? Array.prototype.indexOf : function (obj, fromIndex) {
  if (fromIndex === null || fromIndex === undefined) { fromIndex = 0; }
  else if (fromIndex < 0) { fromIndex = Math.max(0, this.length + fromIndex); }
  for (var i = fromIndex, j = this.length; i < j; i++) {
    if (this[i] === obj) { return i; }
  }
  return -1;
};

Ember.ArrayPolyfills = {
  map: arrayMap,
  forEach: arrayForEach,
  indexOf: arrayIndexOf
};

var utils = Ember.EnumerableUtils = {
  map: function(obj, callback, thisArg) {
    return obj.map ? obj.map.call(obj, callback, thisArg) : arrayMap.call(obj, callback, thisArg);
  },

  forEach: function(obj, callback, thisArg) {
    return obj.forEach ? obj.forEach.call(obj, callback, thisArg) : arrayForEach.call(obj, callback, thisArg);
  },

  indexOf: function(obj, element, index) {
    return obj.indexOf ? obj.indexOf.call(obj, element, index) : arrayIndexOf.call(obj, element, index);
  },

  indexesOf: function(obj, elements) {
    return elements === undefined ? [] : utils.map(elements, function(item) {
      return utils.indexOf(obj, item);
    });
  },

  removeObject: function(array, item) {
    var index = utils.indexOf(array, item);
    if (index !== -1) { array.splice(index, 1); }
  },

  replace: function(array, idx, amt, objects) {
    if (array.replace) {
      return array.replace(idx, amt, objects);
    } else {
      var args = Array.prototype.concat.apply([idx, amt], objects);
      return array.splice.apply(array, args);
    }
  }
};


if (Ember.SHIM_ES5) {
  if (!Array.prototype.map) {
    Array.prototype.map = arrayMap;
  }

  if (!Array.prototype.forEach) {
    Array.prototype.forEach = arrayForEach;
  }

  if (!Array.prototype.indexOf) {
    Array.prototype.indexOf = arrayIndexOf;
  }
}

})();



(function() {
/*globals Node */
/**
@module ember-metal
*/

/**
  Platform specific methods and feature detectors needed by the framework.

  @class platform
  @namespace Ember
  @static
*/
var platform = Ember.platform = {};


/**
  Identical to Object.create().  Implements if not available natively.
  @method create
  @for Ember
*/
Ember.create = Object.create;

if (!Ember.create) {
  var K = function() {};

  Ember.create = function(obj, props) {
    K.prototype = obj;
    obj = new K();
    if (props) {
      K.prototype = obj;
      for (var prop in props) {
        K.prototype[prop] = props[prop].value;
      }
      obj = new K();
    }
    K.prototype = null;

    return obj;
  };

  Ember.create.isSimulated = true;
}

var defineProperty = Object.defineProperty;
var canRedefineProperties, canDefinePropertyOnDOM;

// Catch IE8 where Object.defineProperty exists but only works on DOM elements
if (defineProperty) {
  try {
    defineProperty({}, 'a',{get:function(){}});
  } catch (e) {
    defineProperty = null;
  }
}

if (defineProperty) {
  // Detects a bug in Android <3.2 where you cannot redefine a property using
  // Object.defineProperty once accessors have already been set.
  canRedefineProperties = (function() {
    var obj = {};

    defineProperty(obj, 'a', {
      configurable: true,
      enumerable: true,
      get: function() { },
      set: function() { }
    });

    defineProperty(obj, 'a', {
      configurable: true,
      enumerable: true,
      writable: true,
      value: true
    });

    return obj.a === true;
  })();

  // This is for Safari 5.0, which supports Object.defineProperty, but not
  // on DOM nodes.
  canDefinePropertyOnDOM = (function(){
    try {
      defineProperty(document.createElement('div'), 'definePropertyOnDOM', {});
      return true;
    } catch(e) { }

    return false;
  })();

  if (!canRedefineProperties) {
    defineProperty = null;
  } else if (!canDefinePropertyOnDOM) {
    defineProperty = function(obj, keyName, desc){
      var isNode;

      if (typeof Node === "object") {
        isNode = obj instanceof Node;
      } else {
        isNode = typeof obj === "object" && typeof obj.nodeType === "number" && typeof obj.nodeName === "string";
      }

      if (isNode) {
        // TODO: Should we have a warning here?
        return (obj[keyName] = desc.value);
      } else {
        return Object.defineProperty(obj, keyName, desc);
      }
    };
  }
}

/**
@class platform
@namespace Ember
*/

/**
  Identical to Object.defineProperty().  Implements as much functionality
  as possible if not available natively.

  @method defineProperty
  @param {Object} obj The object to modify
  @param {String} keyName property name to modify
  @param {Object} desc descriptor hash
  @return {void}
*/
platform.defineProperty = defineProperty;

/**
  Set to true if the platform supports native getters and setters.

  @property hasPropertyAccessors
  @final
*/
platform.hasPropertyAccessors = true;

if (!platform.defineProperty) {
  platform.hasPropertyAccessors = false;

  platform.defineProperty = function(obj, keyName, desc) {
    if (!desc.get) { obj[keyName] = desc.value; }
  };

  platform.defineProperty.isSimulated = true;
}

if (Ember.ENV.MANDATORY_SETTER && !platform.hasPropertyAccessors) {
  Ember.ENV.MANDATORY_SETTER = false;
}

})();



(function() {
/**
@module ember-metal
*/

var o_defineProperty = Ember.platform.defineProperty,
    o_create = Ember.create,
    // Used for guid generation...
    GUID_KEY = '__ember'+ (+ new Date()),
    uuid         = 0,
    numberCache  = [],
    stringCache  = {};

var MANDATORY_SETTER = Ember.ENV.MANDATORY_SETTER;

/**
  @private

  A unique key used to assign guids and other private metadata to objects.
  If you inspect an object in your browser debugger you will often see these.
  They can be safely ignored.

  On browsers that support it, these properties are added with enumeration
  disabled so they won't show up when you iterate over your properties.

  @property GUID_KEY
  @for Ember
  @type String
  @final
*/
Ember.GUID_KEY = GUID_KEY;

var GUID_DESC = {
  writable:    false,
  configurable: false,
  enumerable:  false,
  value: null
};

/**
  @private

  Generates a new guid, optionally saving the guid to the object that you
  pass in.  You will rarely need to use this method.  Instead you should
  call Ember.guidFor(obj), which return an existing guid if available.

  @method generateGuid
  @for Ember
  @param {Object} [obj] Object the guid will be used for.  If passed in, the guid will
    be saved on the object and reused whenever you pass the same object
    again.

    If no object is passed, just generate a new guid.

  @param {String} [prefix] Prefix to place in front of the guid.  Useful when you want to
    separate the guid into separate namespaces.

  @return {String} the guid
*/
Ember.generateGuid = function generateGuid(obj, prefix) {
  if (!prefix) prefix = 'ember';
  var ret = (prefix + (uuid++));
  if (obj) {
    GUID_DESC.value = ret;
    o_defineProperty(obj, GUID_KEY, GUID_DESC);
  }
  return ret ;
};

/**
  @private

  Returns a unique id for the object.  If the object does not yet have
  a guid, one will be assigned to it.  You can call this on any object,
  Ember.Object-based or not, but be aware that it will add a _guid property.

  You can also use this method on DOM Element objects.

  @method guidFor
  @for Ember
  @param obj {Object} any object, string, number, Element, or primitive
  @return {String} the unique guid for this instance.
*/
Ember.guidFor = function guidFor(obj) {

  // special cases where we don't want to add a key to object
  if (obj === undefined) return "(undefined)";
  if (obj === null) return "(null)";

  var cache, ret;
  var type = typeof obj;

  // Don't allow prototype changes to String etc. to change the guidFor
  switch(type) {
    case 'number':
      ret = numberCache[obj];
      if (!ret) ret = numberCache[obj] = 'nu'+obj;
      return ret;

    case 'string':
      ret = stringCache[obj];
      if (!ret) ret = stringCache[obj] = 'st'+(uuid++);
      return ret;

    case 'boolean':
      return obj ? '(true)' : '(false)';

    default:
      if (obj[GUID_KEY]) return obj[GUID_KEY];
      if (obj === Object) return '(Object)';
      if (obj === Array)  return '(Array)';
      ret = 'ember'+(uuid++);
      GUID_DESC.value = ret;
      o_defineProperty(obj, GUID_KEY, GUID_DESC);
      return ret;
  }
};

// ..........................................................
// META
//

var META_DESC = {
  writable:    true,
  configurable: false,
  enumerable:  false,
  value: null
};

var META_KEY = Ember.GUID_KEY+'_meta';

/**
  The key used to store meta information on object for property observing.

  @property META_KEY
  @for Ember
  @private
  @final
  @type String
*/
Ember.META_KEY = META_KEY;

// Placeholder for non-writable metas.
var EMPTY_META = {
  descs: {},
  watching: {}
};

if (MANDATORY_SETTER) { EMPTY_META.values = {}; }

Ember.EMPTY_META = EMPTY_META;

if (Object.freeze) Object.freeze(EMPTY_META);

var isDefinePropertySimulated = Ember.platform.defineProperty.isSimulated;

function Meta(obj) {
  this.descs = {};
  this.watching = {};
  this.cache = {};
  this.source = obj;
}

if (isDefinePropertySimulated) {
  // on platforms that don't support enumerable false
  // make meta fail jQuery.isPlainObject() to hide from
  // jQuery.extend() by having a property that fails
  // hasOwnProperty check.
  Meta.prototype.__preventPlainObject__ = true;
}

/**
  Retrieves the meta hash for an object.  If 'writable' is true ensures the
  hash is writable for this object as well.

  The meta object contains information about computed property descriptors as
  well as any watched properties and other information.  You generally will
  not access this information directly but instead work with higher level
  methods that manipulate this hash indirectly.

  @method meta
  @for Ember
  @private

  @param {Object} obj The object to retrieve meta for

  @param {Boolean} [writable=true] Pass false if you do not intend to modify
    the meta hash, allowing the method to avoid making an unnecessary copy.

  @return {Hash}
*/
Ember.meta = function meta(obj, writable) {

  var ret = obj[META_KEY];
  if (writable===false) return ret || EMPTY_META;

  if (!ret) {
    if (!isDefinePropertySimulated) o_defineProperty(obj, META_KEY, META_DESC);

    ret = new Meta(obj);

    if (MANDATORY_SETTER) { ret.values = {}; }

    obj[META_KEY] = ret;

    // make sure we don't accidentally try to create constructor like desc
    ret.descs.constructor = null;

  } else if (ret.source !== obj) {
    if (!isDefinePropertySimulated) o_defineProperty(obj, META_KEY, META_DESC);

    ret = o_create(ret);
    ret.descs    = o_create(ret.descs);
    ret.watching = o_create(ret.watching);
    ret.cache    = {};
    ret.source   = obj;

    if (MANDATORY_SETTER) { ret.values = o_create(ret.values); }

    obj[META_KEY] = ret;
  }
  return ret;
};

Ember.getMeta = function getMeta(obj, property) {
  var meta = Ember.meta(obj, false);
  return meta[property];
};

Ember.setMeta = function setMeta(obj, property, value) {
  var meta = Ember.meta(obj, true);
  meta[property] = value;
  return value;
};

/**
  @private

  In order to store defaults for a class, a prototype may need to create
  a default meta object, which will be inherited by any objects instantiated
  from the class's constructor.

  However, the properties of that meta object are only shallow-cloned,
  so if a property is a hash (like the event system's `listeners` hash),
  it will by default be shared across all instances of that class.

  This method allows extensions to deeply clone a series of nested hashes or
  other complex objects. For instance, the event system might pass
  ['listeners', 'foo:change', 'ember157'] to `prepareMetaPath`, which will
  walk down the keys provided.

  For each key, if the key does not exist, it is created. If it already
  exists and it was inherited from its constructor, the constructor's
  key is cloned.

  You can also pass false for `writable`, which will simply return
  undefined if `prepareMetaPath` discovers any part of the path that
  shared or undefined.

  @method metaPath
  @for Ember
  @param {Object} obj The object whose meta we are examining
  @param {Array} path An array of keys to walk down
  @param {Boolean} writable whether or not to create a new meta
    (or meta property) if one does not already exist or if it's
    shared with its constructor
*/
Ember.metaPath = function metaPath(obj, path, writable) {
  var meta = Ember.meta(obj, writable), keyName, value;

  for (var i=0, l=path.length; i<l; i++) {
    keyName = path[i];
    value = meta[keyName];

    if (!value) {
      if (!writable) { return undefined; }
      value = meta[keyName] = { __ember_source__: obj };
    } else if (value.__ember_source__ !== obj) {
      if (!writable) { return undefined; }
      value = meta[keyName] = o_create(value);
      value.__ember_source__ = obj;
    }

    meta = value;
  }

  return value;
};

/**
  @private

  Wraps the passed function so that `this._super` will point to the superFunc
  when the function is invoked.  This is the primitive we use to implement
  calls to super.

  @method wrap
  @for Ember
  @param {Function} func The function to call
  @param {Function} superFunc The super function.
  @return {Function} wrapped function.
*/
Ember.wrap = function(func, superFunc) {

  function K() {}

  var newFunc = function() {
    var ret, sup = this._super;
    this._super = superFunc || K;
    ret = func.apply(this, arguments);
    this._super = sup;
    return ret;
  };

  newFunc.base = func;
  return newFunc;
};

/**
  Returns true if the passed object is an array or Array-like.

  Ember Array Protocol:

    - the object has an objectAt property
    - the object is a native Array
    - the object is an Object, and has a length property

  Unlike Ember.typeOf this method returns true even if the passed object is
  not formally array but appears to be array-like (i.e. implements Ember.Array)

      Ember.isArray(); // false
      Ember.isArray([]); // true
      Ember.isArray( Ember.ArrayProxy.create({ content: [] }) ); // true

  @method isArray
  @for Ember
  @param {Object} obj The object to test
  @return {Boolean}
*/
Ember.isArray = function(obj) {
  if (!obj || obj.setInterval) { return false; }
  if (Array.isArray && Array.isArray(obj)) { return true; }
  if (Ember.Array && Ember.Array.detect(obj)) { return true; }
  if ((obj.length !== undefined) && 'object'===typeof obj) { return true; }
  return false;
};

/**
  Forces the passed object to be part of an array.  If the object is already
  an array or array-like, returns the object.  Otherwise adds the object to
  an array.  If obj is null or undefined, returns an empty array.

      Ember.makeArray();          => []
      Ember.makeArray(null);      => []
      Ember.makeArray(undefined); => []
      Ember.makeArray('lindsay'); => ['lindsay']
      Ember.makeArray([1,2,42]);  => [1,2,42]

      var controller = Ember.ArrayProxy.create({ content: [] });
      Ember.makeArray(controller) === controller;   => true

  @method makeArray
  @for Ember
  @param {Object} obj the object
  @return {Array}
*/
Ember.makeArray = function(obj) {
  if (obj === null || obj === undefined) { return []; }
  return Ember.isArray(obj) ? obj : [obj];
};

function canInvoke(obj, methodName) {
  return !!(obj && typeof obj[methodName] === 'function');
}

/**
  Checks to see if the `methodName` exists on the `obj`.

  @method canInvoke
  @for Ember
  @param {Object} obj The object to check for the method
  @param {String} methodName The method name to check for
*/
Ember.canInvoke = canInvoke;

/**
  Checks to see if the `methodName` exists on the `obj`,
  and if it does, invokes it with the arguments passed.

  @method tryInvoke
  @for Ember
  @param {Object} obj The object to check for the method
  @param {String} methodName The method name to check for
  @param {Array} [args] The arguments to pass to the method
  @return {anything} the return value of the invoked method or undefined if it cannot be invoked
*/
Ember.tryInvoke = function(obj, methodName, args) {
  if (canInvoke(obj, methodName)) {
    return obj[methodName].apply(obj, args || []);
  }
};

})();



(function() {
/**
@module ember-metal
*/

/*
  JavaScript (before ES6) does not have a Map implementation. Objects,
  which are often used as dictionaries, may only have Strings as keys.

  Because Ember has a way to get a unique identifier for every object
  via `Ember.guidFor`, we can implement a performant Map with arbitrary
  keys. Because it is commonly used in low-level bookkeeping, Map is
  implemented as a pure JavaScript object for performance.

  This implementation follows the current iteration of the ES6 proposal
  for maps (http://wiki.ecmascript.org/doku.php?id=harmony:simple_maps_and_sets),
  with two exceptions. First, because we need our implementation to be
  pleasant on older browsers, we do not use the `delete` name (using
  `remove` instead). Second, as we do not have the luxury of in-VM
  iteration, we implement a forEach method for iteration.

  Map is mocked out to look like an Ember object, so you can do
  `Ember.Map.create()` for symmetry with other Ember classes.
*/
var guidFor = Ember.guidFor,
    indexOf = Ember.ArrayPolyfills.indexOf;

var copy = function(obj) {
  var output = {};

  for (var prop in obj) {
    if (obj.hasOwnProperty(prop)) { output[prop] = obj[prop]; }
  }

  return output;
};

var copyMap = function(original, newObject) {
  var keys = original.keys.copy(),
      values = copy(original.values);

  newObject.keys = keys;
  newObject.values = values;

  return newObject;
};

/**
  This class is used internally by Ember.js and Ember Data.
  Please do not use it at this time. We plan to clean it up
  and add many tests soon.

  @class OrderedSet
  @namespace Ember
  @constructor
  @private
*/
var OrderedSet = Ember.OrderedSet = function() {
  this.clear();
};

/**
  @method create
  @static
  @return {Ember.OrderedSet}
*/
OrderedSet.create = function() {
  return new OrderedSet();
};


OrderedSet.prototype = {
  /**
    @method clear
  */
  clear: function() {
    this.presenceSet = {};
    this.list = [];
  },

  /**
    @method add
    @param obj
  */
  add: function(obj) {
    var guid = guidFor(obj),
        presenceSet = this.presenceSet,
        list = this.list;

    if (guid in presenceSet) { return; }

    presenceSet[guid] = true;
    list.push(obj);
  },

  /**
    @method remove
    @param obj
  */
  remove: function(obj) {
    var guid = guidFor(obj),
        presenceSet = this.presenceSet,
        list = this.list;

    delete presenceSet[guid];

    var index = indexOf.call(list, obj);
    if (index > -1) {
      list.splice(index, 1);
    }
  },

  /**
    @method isEmpty
    @return {Boolean}
  */
  isEmpty: function() {
    return this.list.length === 0;
  },

  /**
    @method has
    @param obj
    @return {Boolean}
  */
  has: function(obj) {
    var guid = guidFor(obj),
        presenceSet = this.presenceSet;

    return guid in presenceSet;
  },

  /**
    @method forEach
    @param {Function} function
    @param target
  */
  forEach: function(fn, self) {
    // allow mutation during iteration
    var list = this.list.slice();

    for (var i = 0, j = list.length; i < j; i++) {
      fn.call(self, list[i]);
    }
  },

  /**
    @method toArray
    @return {Array}
  */
  toArray: function() {
    return this.list.slice();
  },

  /**
    @method copy
    @return {Ember.OrderedSet}
  */
  copy: function() {
    var set = new OrderedSet();

    set.presenceSet = copy(this.presenceSet);
    set.list = this.list.slice();

    return set;
  }
};

/**
  A Map stores values indexed by keys. Unlike JavaScript's
  default Objects, the keys of a Map can be any JavaScript
  object.

  Internally, a Map has two data structures:

    `keys`: an OrderedSet of all of the existing keys
    `values`: a JavaScript Object indexed by the
      Ember.guidFor(key)

  When a key/value pair is added for the first time, we
  add the key to the `keys` OrderedSet, and create or
  replace an entry in `values`. When an entry is deleted,
  we delete its entry in `keys` and `values`.

  @class Map
  @namespace Ember
  @private
  @constructor
*/
var Map = Ember.Map = function() {
  this.keys = Ember.OrderedSet.create();
  this.values = {};
};

/**
  @method create
  @static
*/
Map.create = function() {
  return new Map();
};

Map.prototype = {
  /**
    Retrieve the value associated with a given key.

    @method get
    @param {anything} key
    @return {anything} the value associated with the key, or undefined
  */
  get: function(key) {
    var values = this.values,
        guid = guidFor(key);

    return values[guid];
  },

  /**
    Adds a value to the map. If a value for the given key has already been
    provided, the new value will replace the old value.

    @method set
    @param {anything} key
    @param {anything} value
  */
  set: function(key, value) {
    var keys = this.keys,
        values = this.values,
        guid = guidFor(key);

    keys.add(key);
    values[guid] = value;
  },

  /**
    Removes a value from the map for an associated key.

    @method remove
    @param {anything} key
    @return {Boolean} true if an item was removed, false otherwise
  */
  remove: function(key) {
    // don't use ES6 "delete" because it will be annoying
    // to use in browsers that are not ES6 friendly;
    var keys = this.keys,
        values = this.values,
        guid = guidFor(key),
        value;

    if (values.hasOwnProperty(guid)) {
      keys.remove(key);
      value = values[guid];
      delete values[guid];
      return true;
    } else {
      return false;
    }
  },

  /**
    Check whether a key is present.

    @method has
    @param {anything} key
    @return {Boolean} true if the item was present, false otherwise
  */
  has: function(key) {
    var values = this.values,
        guid = guidFor(key);

    return values.hasOwnProperty(guid);
  },

  /**
    Iterate over all the keys and values. Calls the function once
    for each key, passing in the key and value, in that order.

    The keys are guaranteed to be iterated over in insertion order.

    @method forEach
    @param {Function} callback
    @param {anything} self if passed, the `this` value inside the
      callback. By default, `this` is the map.
  */
  forEach: function(callback, self) {
    var keys = this.keys,
        values = this.values;

    keys.forEach(function(key) {
      var guid = guidFor(key);
      callback.call(self, key, values[guid]);
    });
  },

  /**
    @method copy
    @return {Ember.Map}
  */
  copy: function() {
    return copyMap(this, new Map());
  }
};

/**
  @class MapWithDefault
  @namespace Ember
  @extends Ember.Map
  @private
  @constructor
  @param [options]
    @param {anything} [options.defaultValue]
*/
var MapWithDefault = Ember.MapWithDefault = function(options) {
  Map.call(this);
  this.defaultValue = options.defaultValue;
};

/**
  @method create
  @static
  @param [options]
    @param {anything} [options.defaultValue]
  @return {Ember.MapWithDefault|Ember.Map} If options are passed, returns Ember.MapWithDefault otherwise returns Ember.Map
*/
MapWithDefault.create = function(options) {
  if (options) {
    return new MapWithDefault(options);
  } else {
    return new Map();
  }
};

MapWithDefault.prototype = Ember.create(Map.prototype);

/**
  Retrieve the value associated with a given key.

  @method get
  @param {anything} key
  @return {anything} the value associated with the key, or the default value
*/
MapWithDefault.prototype.get = function(key) {
  var hasValue = this.has(key);

  if (hasValue) {
    return Map.prototype.get.call(this, key);
  } else {
    var defaultValue = this.defaultValue(key);
    this.set(key, defaultValue);
    return defaultValue;
  }
};

/**
  @method copy
  @return {Ember.MapWithDefault}
*/
MapWithDefault.prototype.copy = function() {
  return copyMap(this, new MapWithDefault({
    defaultValue: this.defaultValue
  }));
};

})();



(function() {
/**
@module ember-metal
*/

var META_KEY = Ember.META_KEY, get, set;

var MANDATORY_SETTER = Ember.ENV.MANDATORY_SETTER;

var IS_GLOBAL = /^([A-Z$]|([0-9][A-Z$]))/;
var IS_GLOBAL_PATH = /^([A-Z$]|([0-9][A-Z$])).*[\.\*]/;
var HAS_THIS  = /^this[\.\*]/;
var FIRST_KEY = /^([^\.\*]+)/;

// ..........................................................
// GET AND SET
//
// If we are on a platform that supports accessors we can get use those.
// Otherwise simulate accessors by looking up the property directly on the
// object.

/**
  Gets the value of a property on an object.  If the property is computed,
  the function will be invoked.  If the property is not defined but the
  object implements the unknownProperty() method then that will be invoked.

  If you plan to run on IE8 and older browsers then you should use this
  method anytime you want to retrieve a property on an object that you don't
  know for sure is private.  (My convention only properties beginning with
  an underscore '_' are considered private.)

  On all newer browsers, you only need to use this method to retrieve
  properties if the property might not be defined on the object and you want
  to respect the unknownProperty() handler.  Otherwise you can ignore this
  method.

  Note that if the obj itself is null, this method will simply return
  undefined.

  @method get
  @for Ember
  @param {Object} obj The object to retrieve from.
  @param {String} keyName The property key to retrieve
  @return {Object} the property value or null.
*/
get = function get(obj, keyName) {
  // Helpers that operate with 'this' within an #each
  if (keyName === '') {
    return obj;
  }

  if (!keyName && 'string'===typeof obj) {
    keyName = obj;
    obj = null;
  }

  if (!obj || keyName.indexOf('.') !== -1) {
    return getPath(obj, keyName);
  }

  Ember.assert("You need to provide an object and key to `get`.", !!obj && keyName);

  var meta = obj[META_KEY], desc = meta && meta.descs[keyName], ret;
  if (desc) {
    return desc.get(obj, keyName);
  } else {
    if (MANDATORY_SETTER && meta && meta.watching[keyName] > 0) {
      ret = meta.values[keyName];
    } else {
      ret = obj[keyName];
    }

    if (ret === undefined &&
        'object' === typeof obj && !(keyName in obj) && 'function' === typeof obj.unknownProperty) {
      return obj.unknownProperty(keyName);
    }

    return ret;
  }
};

/**
  Sets the value of a property on an object, respecting computed properties
  and notifying observers and other listeners of the change.  If the
  property is not defined but the object implements the unknownProperty()
  method then that will be invoked as well.

  If you plan to run on IE8 and older browsers then you should use this
  method anytime you want to set a property on an object that you don't
  know for sure is private.  (My convention only properties beginning with
  an underscore '_' are considered private.)

  On all newer browsers, you only need to use this method to set
  properties if the property might not be defined on the object and you want
  to respect the unknownProperty() handler.  Otherwise you can ignore this
  method.

  @method set
  @for Ember
  @param {Object} obj The object to modify.
  @param {String} keyName The property key to set
  @param {Object} value The value to set
  @return {Object} the passed value.
*/
set = function set(obj, keyName, value, tolerant) {
  if (typeof obj === 'string') {
    Ember.assert("Path '" + obj + "' must be global if no obj is given.", IS_GLOBAL.test(obj));
    value = keyName;
    keyName = obj;
    obj = null;
  }

  if (!obj || keyName.indexOf('.') !== -1) {
    return setPath(obj, keyName, value, tolerant);
  }

  Ember.assert("You need to provide an object and key to `set`.", !!obj && keyName !== undefined);
  Ember.assert('calling set on destroyed object', !obj.isDestroyed);

  var meta = obj[META_KEY], desc = meta && meta.descs[keyName],
      isUnknown, currentValue;
  if (desc) {
    desc.set(obj, keyName, value);
  }
  else {
    isUnknown = 'object' === typeof obj && !(keyName in obj);

    // setUnknownProperty is called if `obj` is an object,
    // the property does not already exist, and the
    // `setUnknownProperty` method exists on the object
    if (isUnknown && 'function' === typeof obj.setUnknownProperty) {
      obj.setUnknownProperty(keyName, value);
    } else if (meta && meta.watching[keyName] > 0) {
      if (MANDATORY_SETTER) {
        currentValue = meta.values[keyName];
      } else {
        currentValue = obj[keyName];
      }
      // only trigger a change if the value has changed
      if (value !== currentValue) {
        Ember.propertyWillChange(obj, keyName);
        if (MANDATORY_SETTER) {
          if (currentValue === undefined && !(keyName in obj)) {
            Ember.defineProperty(obj, keyName, null, value); // setup mandatory setter
          } else {
            meta.values[keyName] = value;
          }
        } else {
          obj[keyName] = value;
        }
        Ember.propertyDidChange(obj, keyName);
      }
    } else {
      obj[keyName] = value;
    }
  }
  return value;
};

// Currently used only by Ember Data tests
if (Ember.config.overrideAccessors) {
  Ember.get = get;
  Ember.set = set;
  Ember.config.overrideAccessors();
  get = Ember.get;
  set = Ember.set;
}

function firstKey(path) {
  return path.match(FIRST_KEY)[0];
}

// assumes path is already normalized
function normalizeTuple(target, path) {
  var hasThis  = HAS_THIS.test(path),
      isGlobal = !hasThis && IS_GLOBAL_PATH.test(path),
      key;

  if (!target || isGlobal) target = Ember.lookup;
  if (hasThis) path = path.slice(5);

  if (target === Ember.lookup) {
    key = firstKey(path);
    target = get(target, key);
    path   = path.slice(key.length+1);
  }

  // must return some kind of path to be valid else other things will break.
  if (!path || path.length===0) throw new Error('Invalid Path');

  return [ target, path ];
}

function getPath(root, path) {
  var hasThis, parts, tuple, idx, len;

  // If there is no root and path is a key name, return that
  // property from the global object.
  // E.g. get('Ember') -> Ember
  if (root === null && path.indexOf('.') === -1) { return get(Ember.lookup, path); }

  // detect complicated paths and normalize them
  hasThis  = HAS_THIS.test(path);

  if (!root || hasThis) {
    tuple = normalizeTuple(root, path);
    root = tuple[0];
    path = tuple[1];
    tuple.length = 0;
  }

  parts = path.split(".");
  len = parts.length;
  for (idx=0; root && idx<len; idx++) {
    root = get(root, parts[idx], true);
    if (root && root.isDestroyed) { return undefined; }
  }
  return root;
}

function setPath(root, path, value, tolerant) {
  var keyName;

  // get the last part of the path
  keyName = path.slice(path.lastIndexOf('.') + 1);

  // get the first part of the part
  path    = path.slice(0, path.length-(keyName.length+1));

  // unless the path is this, look up the first part to
  // get the root
  if (path !== 'this') {
    root = getPath(root, path);
  }

  if (!keyName || keyName.length === 0) {
    throw new Error('You passed an empty path');
  }

  if (!root) {
    if (tolerant) { return; }
    else { throw new Error('Object in path '+path+' could not be found or was destroyed.'); }
  }

  return set(root, keyName, value);
}

/**
  @private

  Normalizes a target/path pair to reflect that actual target/path that should
  be observed, etc.  This takes into account passing in global property
  paths (i.e. a path beginning with a captial letter not defined on the
  target) and * separators.

  @method normalizeTuple
  @for Ember
  @param {Object} target The current target.  May be null.
  @param {String} path A path on the target or a global property path.
  @return {Array} a temporary array with the normalized target/path pair.
*/
Ember.normalizeTuple = function(target, path) {
  return normalizeTuple(target, path);
};

Ember.getWithDefault = function(root, key, defaultValue) {
  var value = get(root, key);

  if (value === undefined) { return defaultValue; }
  return value;
};


Ember.get = get;
Ember.getPath = Ember.deprecateFunc('getPath is deprecated since get now supports paths', Ember.get);

Ember.set = set;
Ember.setPath = Ember.deprecateFunc('setPath is deprecated since set now supports paths', Ember.set);

/**
  Error-tolerant form of Ember.set. Will not blow up if any part of the
  chain is undefined, null, or destroyed.

  This is primarily used when syncing bindings, which may try to update after
  an object has been destroyed.

  @method trySet
  @for Ember
  @param {Object} obj The object to modify.
  @param {String} keyName The property key to set
  @param {Object} value The value to set
*/
Ember.trySet = function(root, path, value) {
  return set(root, path, value, true);
};
Ember.trySetPath = Ember.deprecateFunc('trySetPath has been renamed to trySet', Ember.trySet);

/**
  Returns true if the provided path is global (e.g., "MyApp.fooController.bar")
  instead of local ("foo.bar.baz").

  @method isGlobalPath
  @for Ember
  @private
  @param {String} path
  @return Boolean
*/
Ember.isGlobalPath = function(path) {
  return IS_GLOBAL.test(path);
};


})();



(function() {
/**
@module ember-metal
*/

var GUID_KEY = Ember.GUID_KEY,
    META_KEY = Ember.META_KEY,
    EMPTY_META = Ember.EMPTY_META,
    metaFor = Ember.meta,
    o_create = Ember.create,
    objectDefineProperty = Ember.platform.defineProperty;

var MANDATORY_SETTER = Ember.ENV.MANDATORY_SETTER;

// ..........................................................
// DESCRIPTOR
//

/**
  Objects of this type can implement an interface to responds requests to
  get and set.  The default implementation handles simple properties.

  You generally won't need to create or subclass this directly.

  @class Descriptor
  @namespace Ember
  @private
  @constructor
*/
var Descriptor = Ember.Descriptor = function() {};

// ..........................................................
// DEFINING PROPERTIES API
//

/**
  @private

  NOTE: This is a low-level method used by other parts of the API.  You almost
  never want to call this method directly.  Instead you should use Ember.mixin()
  to define new properties.

  Defines a property on an object.  This method works much like the ES5
  Object.defineProperty() method except that it can also accept computed
  properties and other special descriptors.

  Normally this method takes only three parameters.  However if you pass an
  instance of Ember.Descriptor as the third param then you can pass an optional
  value as the fourth parameter.  This is often more efficient than creating
  new descriptor hashes for each property.

  ## Examples

      // ES5 compatible mode
      Ember.defineProperty(contact, 'firstName', {
        writable: true,
        configurable: false,
        enumerable: true,
        value: 'Charles'
      });

      // define a simple property
      Ember.defineProperty(contact, 'lastName', undefined, 'Jolley');

      // define a computed property
      Ember.defineProperty(contact, 'fullName', Ember.computed(function() {
        return this.firstName+' '+this.lastName;
      }).property('firstName', 'lastName'));

  @method defineProperty
  @for Ember
  @param {Object} obj the object to define this property on. This may be a prototype.
  @param {String} keyName the name of the property
  @param {Ember.Descriptor} [desc] an instance of Ember.Descriptor (typically a
    computed property) or an ES5 descriptor.
    You must provide this or `data` but not both.
  @param {anything} [data] something other than a descriptor, that will
    become the explicit value of this property.
*/
Ember.defineProperty = function(obj, keyName, desc, data, meta) {
  var descs, existingDesc, watching, value;

  if (!meta) meta = metaFor(obj);
  descs = meta.descs;
  existingDesc = meta.descs[keyName];
  watching = meta.watching[keyName] > 0;

  if (existingDesc instanceof Ember.Descriptor) {
    existingDesc.teardown(obj, keyName);
  }

  if (desc instanceof Ember.Descriptor) {
    value = desc;

    descs[keyName] = desc;
    if (MANDATORY_SETTER && watching) {
      objectDefineProperty(obj, keyName, {
        configurable: true,
        enumerable: true,
        writable: true,
        value: undefined // make enumerable
      });
    } else {
      obj[keyName] = undefined; // make enumerable
    }
    desc.setup(obj, keyName);
  } else {
    descs[keyName] = undefined; // shadow descriptor in proto
    if (desc == null) {
      value = data;

      if (MANDATORY_SETTER && watching) {
        meta.values[keyName] = data;
        objectDefineProperty(obj, keyName, {
          configurable: true,
          enumerable: true,
          set: function() {
            Ember.assert('Must use Ember.set() to access this property', false);
          },
          get: function() {
            var meta = this[META_KEY];
            return meta && meta.values[keyName];
          }
        });
      } else {
        obj[keyName] = data;
      }
    } else {
      value = desc;

      // compatibility with ES5
      objectDefineProperty(obj, keyName, desc);
    }
  }

  // if key is being watched, override chains that
  // were initialized with the prototype
  if (watching) { Ember.overrideChains(obj, keyName, meta); }

  // The `value` passed to the `didDefineProperty` hook is
  // either the descriptor or data, whichever was passed.
  if (obj.didDefineProperty) { obj.didDefineProperty(obj, keyName, value); }

  return this;
};


})();



(function() {
/**
@module ember-metal
*/

var AFTER_OBSERVERS = ':change';
var BEFORE_OBSERVERS = ':before';

var guidFor = Ember.guidFor;

var deferred = 0;

/*
  this.observerSet = {
    [senderGuid]: { // variable name: `keySet`
      [keyName]: listIndex
    }
  },
  this.observers = [
    {
      sender: obj,
      keyName: keyName,
      eventName: eventName,
      listeners: {
        [targetGuid]: {        // variable name: `actionSet`
          [methodGuid]: {      // variable name: `action`
            target: [Object object],
            method: [Function function]
          }
        }
      }
    },
    ...
  ]
*/
function ObserverSet() {
  this.clear();
}

ObserverSet.prototype.add = function(sender, keyName, eventName) {
  var observerSet = this.observerSet,
      observers = this.observers,
      senderGuid = Ember.guidFor(sender),
      keySet = observerSet[senderGuid],
      index;

  if (!keySet) {
    observerSet[senderGuid] = keySet = {};
  }
  index = keySet[keyName];
  if (index === undefined) {
    index = observers.push({
      sender: sender,
      keyName: keyName,
      eventName: eventName,
      listeners: {}
    }) - 1;
    keySet[keyName] = index;
  }
  return observers[index].listeners;
};

ObserverSet.prototype.flush = function() {
  var observers = this.observers, i, len, observer, sender;
  this.clear();
  for (i=0, len=observers.length; i < len; ++i) {
    observer = observers[i];
    sender = observer.sender;
    if (sender.isDestroyed) { continue; }
    Ember.sendEvent(sender, observer.eventName, [sender, observer.keyName], observer.listeners);
  }
};

ObserverSet.prototype.clear = function() {
  this.observerSet = {};
  this.observers = [];
};

var beforeObserverSet = new ObserverSet(), observerSet = new ObserverSet();

/**
  @method beginPropertyChanges
  @chainable
*/
Ember.beginPropertyChanges = function() {
  deferred++;
};

/**
  @method endPropertyChanges
*/
Ember.endPropertyChanges = function() {
  deferred--;
  if (deferred<=0) {
    beforeObserverSet.clear();
    observerSet.flush();
  }
};

/**
  Make a series of property changes together in an
  exception-safe way.

      Ember.changeProperties(function() {
        obj1.set('foo', mayBlowUpWhenSet);
        obj2.set('bar', baz);
      });

  @method changeProperties
  @param {Function} callback
  @param [binding]
*/
Ember.changeProperties = function(cb, binding){
  Ember.beginPropertyChanges();
  try {
    cb.call(binding);
  } finally {
    Ember.endPropertyChanges();
  }
};

/**
  Set a list of properties on an object. These properties are set inside
  a single `beginPropertyChanges` and `endPropertyChanges` batch, so
  observers will be buffered.

  @method setProperties
  @param target
  @param {Hash} properties
  @return target
*/
Ember.setProperties = function(self, hash) {
  Ember.changeProperties(function(){
    for(var prop in hash) {
      if (hash.hasOwnProperty(prop)) Ember.set(self, prop, hash[prop]);
    }
  });
  return self;
};


function changeEvent(keyName) {
  return keyName+AFTER_OBSERVERS;
}

function beforeEvent(keyName) {
  return keyName+BEFORE_OBSERVERS;
}

/**
  @method addObserver
  @param obj
  @param {String} path
  @param {Object|Function} targetOrMethod
  @param {Function|String} [method]
*/
Ember.addObserver = function(obj, path, target, method) {
  Ember.addListener(obj, changeEvent(path), target, method);
  Ember.watch(obj, path);
  return this;
};

Ember.observersFor = function(obj, path) {
  return Ember.listenersFor(obj, changeEvent(path));
};

/**
  @method removeObserver
  @param obj
  @param {String} path
  @param {Object|Function} targetOrMethod
  @param {Function|String} [method]
*/
Ember.removeObserver = function(obj, path, target, method) {
  Ember.unwatch(obj, path);
  Ember.removeListener(obj, changeEvent(path), target, method);
  return this;
};

/**
  @method addBeforeObserver
  @param obj
  @param {String} path
  @param {Object|Function} targetOrMethod
  @param {Function|String} [method]
*/
Ember.addBeforeObserver = function(obj, path, target, method) {
  Ember.addListener(obj, beforeEvent(path), target, method);
  Ember.watch(obj, path);
  return this;
};

// Suspend observer during callback.
//
// This should only be used by the target of the observer
// while it is setting the observed path.
Ember._suspendBeforeObserver = function(obj, path, target, method, callback) {
  return Ember._suspendListener(obj, beforeEvent(path), target, method, callback);
};

Ember._suspendObserver = function(obj, path, target, method, callback) {
  return Ember._suspendListener(obj, changeEvent(path), target, method, callback);
};

var map = Ember.ArrayPolyfills.map;

Ember._suspendBeforeObservers = function(obj, paths, target, method, callback) {
  var events = map.call(paths, beforeEvent);
  return Ember._suspendListeners(obj, events, target, method, callback);
};

Ember._suspendObservers = function(obj, paths, target, method, callback) {
  var events = map.call(paths, changeEvent);
  return Ember._suspendListeners(obj, events, target, method, callback);
};

Ember.beforeObserversFor = function(obj, path) {
  return Ember.listenersFor(obj, beforeEvent(path));
};

/**
  @method removeBeforeObserver
  @param obj
  @param {String} path
  @param {Object|Function} targetOrMethod
  @param {Function|String} [method]
*/
Ember.removeBeforeObserver = function(obj, path, target, method) {
  Ember.unwatch(obj, path);
  Ember.removeListener(obj, beforeEvent(path), target, method);
  return this;
};

Ember.notifyBeforeObservers = function(obj, keyName) {
  if (obj.isDestroying) { return; }

  var eventName = beforeEvent(keyName), listeners, listenersDiff;
  if (deferred) {
    listeners = beforeObserverSet.add(obj, keyName, eventName);
    listenersDiff = Ember.listenersDiff(obj, eventName, listeners);
    Ember.sendEvent(obj, eventName, [obj, keyName], listenersDiff);
  } else {
    Ember.sendEvent(obj, eventName, [obj, keyName]);
  }
};

Ember.notifyObservers = function(obj, keyName) {
  if (obj.isDestroying) { return; }

  var eventName = changeEvent(keyName), listeners;
  if (deferred) {
    listeners = observerSet.add(obj, keyName, eventName);
    Ember.listenersUnion(obj, eventName, listeners);
  } else {
    Ember.sendEvent(obj, eventName, [obj, keyName]);
  }
};

})();



(function() {
/**
@module ember-metal
*/

var guidFor = Ember.guidFor, // utils.js
    metaFor = Ember.meta, // utils.js
    get = Ember.get, // accessors.js
    set = Ember.set, // accessors.js
    normalizeTuple = Ember.normalizeTuple, // accessors.js
    GUID_KEY = Ember.GUID_KEY, // utils.js
    META_KEY = Ember.META_KEY, // utils.js
    // circular reference observer depends on Ember.watch
    // we should move change events to this file or its own property_events.js
    notifyObservers = Ember.notifyObservers, // observer.js
    forEach = Ember.ArrayPolyfills.forEach, // array.js
    FIRST_KEY = /^([^\.\*]+)/,
    IS_PATH = /[\.\*]/;

var MANDATORY_SETTER = Ember.ENV.MANDATORY_SETTER,
o_defineProperty = Ember.platform.defineProperty;

function firstKey(path) {
  return path.match(FIRST_KEY)[0];
}

// returns true if the passed path is just a keyName
function isKeyName(path) {
  return path==='*' || !IS_PATH.test(path);
}

// ..........................................................
// DEPENDENT KEYS
//

var DEP_SKIP = { __emberproto__: true }; // skip some keys and toString

function iterDeps(method, obj, depKey, seen, meta) {

  var guid = guidFor(obj);
  if (!seen[guid]) seen[guid] = {};
  if (seen[guid][depKey]) return;
  seen[guid][depKey] = true;

  var deps = meta.deps;
  deps = deps && deps[depKey];
  if (deps) {
    for(var key in deps) {
      if (DEP_SKIP[key]) continue;
      var desc = meta.descs[key];
      if (desc && desc._suspended === obj) continue;
      method(obj, key);
    }
  }
}


var WILL_SEEN, DID_SEEN;

// called whenever a property is about to change to clear the cache of any dependent keys (and notify those properties of changes, etc...)
function dependentKeysWillChange(obj, depKey, meta) {
  if (obj.isDestroying) { return; }

  var seen = WILL_SEEN, top = !seen;
  if (top) { seen = WILL_SEEN = {}; }
  iterDeps(propertyWillChange, obj, depKey, seen, meta);
  if (top) { WILL_SEEN = null; }
}

// called whenever a property has just changed to update dependent keys
function dependentKeysDidChange(obj, depKey, meta) {
  if (obj.isDestroying) { return; }

  var seen = DID_SEEN, top = !seen;
  if (top) { seen = DID_SEEN = {}; }
  iterDeps(propertyDidChange, obj, depKey, seen, meta);
  if (top) { DID_SEEN = null; }
}

// ..........................................................
// CHAIN
//

function addChainWatcher(obj, keyName, node) {
  if (!obj || ('object' !== typeof obj)) return; // nothing to do
  var m = metaFor(obj);
  var nodes = m.chainWatchers;
  if (!nodes || nodes.__emberproto__ !== obj) {
    nodes = m.chainWatchers = { __emberproto__: obj };
  }

  if (!nodes[keyName]) { nodes[keyName] = {}; }
  nodes[keyName][guidFor(node)] = node;
  Ember.watch(obj, keyName);
}

function removeChainWatcher(obj, keyName, node) {
  if (!obj || 'object' !== typeof obj) { return; } // nothing to do
  var m = metaFor(obj, false),
      nodes = m.chainWatchers;
  if (!nodes || nodes.__emberproto__ !== obj) { return; } //nothing to do
  if (nodes[keyName]) { delete nodes[keyName][guidFor(node)]; }
  Ember.unwatch(obj, keyName);
}

var pendingQueue = [];

// attempts to add the pendingQueue chains again.  If some of them end up
// back in the queue and reschedule is true, schedules a timeout to try
// again.
function flushPendingChains() {
  if (pendingQueue.length === 0) { return; } // nothing to do

  var queue = pendingQueue;
  pendingQueue = [];

  forEach.call(queue, function(q) { q[0].add(q[1]); });

  Ember.warn('Watching an undefined global, Ember expects watched globals to be setup by the time the run loop is flushed, check for typos', pendingQueue.length === 0);
}

function isProto(pvalue) {
  return metaFor(pvalue, false).proto === pvalue;
}

// A ChainNode watches a single key on an object.  If you provide a starting
// value for the key then the node won't actually watch it.  For a root node
// pass null for parent and key and object for value.
var ChainNode = function(parent, key, value, separator) {
  var obj;
  this._parent = parent;
  this._key    = key;

  // _watching is true when calling get(this._parent, this._key) will
  // return the value of this node.
  //
  // It is false for the root of a chain (because we have no parent)
  // and for global paths (because the parent node is the object with
  // the observer on it)
  this._watching = value===undefined;

  this._value  = value;
  this._separator = separator || '.';
  this._paths = {};
  if (this._watching) {
    this._object = parent.value();
    if (this._object) { addChainWatcher(this._object, this._key, this); }
  }

  // Special-case: the EachProxy relies on immediate evaluation to
  // establish its observers.
  //
  // TODO: Replace this with an efficient callback that the EachProxy
  // can implement.
  if (this._parent && this._parent._key === '@each') {
    this.value();
  }
};

var ChainNodePrototype = ChainNode.prototype;

ChainNodePrototype.value = function() {
  if (this._value === undefined && this._watching) {
    var obj = this._parent.value();
    this._value = (obj && !isProto(obj)) ? get(obj, this._key) : undefined;
  }
  return this._value;
};

ChainNodePrototype.destroy = function() {
  if (this._watching) {
    var obj = this._object;
    if (obj) { removeChainWatcher(obj, this._key, this); }
    this._watching = false; // so future calls do nothing
  }
};

// copies a top level object only
ChainNodePrototype.copy = function(obj) {
  var ret = new ChainNode(null, null, obj, this._separator),
      paths = this._paths, path;
  for (path in paths) {
    if (paths[path] <= 0) { continue; } // this check will also catch non-number vals.
    ret.add(path);
  }
  return ret;
};

// called on the root node of a chain to setup watchers on the specified
// path.
ChainNodePrototype.add = function(path) {
  var obj, tuple, key, src, separator, paths;

  paths = this._paths;
  paths[path] = (paths[path] || 0) + 1;

  obj = this.value();
  tuple = normalizeTuple(obj, path);

  // the path was a local path
  if (tuple[0] && tuple[0] === obj) {
    path = tuple[1];
    key  = firstKey(path);
    path = path.slice(key.length+1);

  // global path, but object does not exist yet.
  // put into a queue and try to connect later.
  } else if (!tuple[0]) {
    pendingQueue.push([this, path]);
    tuple.length = 0;
    return;

  // global path, and object already exists
  } else {
    src  = tuple[0];
    key  = path.slice(0, 0-(tuple[1].length+1));
    separator = path.slice(key.length, key.length+1);
    path = tuple[1];
  }

  tuple.length = 0;
  this.chain(key, path, src, separator);
};

// called on the root node of a chain to teardown watcher on the specified
// path
ChainNodePrototype.remove = function(path) {
  var obj, tuple, key, src, paths;

  paths = this._paths;
  if (paths[path] > 0) { paths[path]--; }

  obj = this.value();
  tuple = normalizeTuple(obj, path);
  if (tuple[0] === obj) {
    path = tuple[1];
    key  = firstKey(path);
    path = path.slice(key.length+1);
  } else {
    src  = tuple[0];
    key  = path.slice(0, 0-(tuple[1].length+1));
    path = tuple[1];
  }

  tuple.length = 0;
  this.unchain(key, path);
};

ChainNodePrototype.count = 0;

ChainNodePrototype.chain = function(key, path, src, separator) {
  var chains = this._chains, node;
  if (!chains) { chains = this._chains = {}; }

  node = chains[key];
  if (!node) { node = chains[key] = new ChainNode(this, key, src, separator); }
  node.count++; // count chains...

  // chain rest of path if there is one
  if (path && path.length>0) {
    key = firstKey(path);
    path = path.slice(key.length+1);
    node.chain(key, path); // NOTE: no src means it will observe changes...
  }
};

ChainNodePrototype.unchain = function(key, path) {
  var chains = this._chains, node = chains[key];

  // unchain rest of path first...
  if (path && path.length>1) {
    key  = firstKey(path);
    path = path.slice(key.length+1);
    node.unchain(key, path);
  }

  // delete node if needed.
  node.count--;
  if (node.count<=0) {
    delete chains[node._key];
    node.destroy();
  }

};

ChainNodePrototype.willChange = function() {
  var chains = this._chains;
  if (chains) {
    for(var key in chains) {
      if (!chains.hasOwnProperty(key)) { continue; }
      chains[key].willChange();
    }
  }

  if (this._parent) { this._parent.chainWillChange(this, this._key, 1); }
};

ChainNodePrototype.chainWillChange = function(chain, path, depth) {
  if (this._key) { path = this._key + this._separator + path; }

  if (this._parent) {
    this._parent.chainWillChange(this, path, depth+1);
  } else {
    if (depth > 1) { Ember.propertyWillChange(this.value(), path); }
    path = 'this.' + path;
    if (this._paths[path] > 0) { Ember.propertyWillChange(this.value(), path); }
  }
};

ChainNodePrototype.chainDidChange = function(chain, path, depth) {
  if (this._key) { path = this._key + this._separator + path; }
  if (this._parent) {
    this._parent.chainDidChange(this, path, depth+1);
  } else {
    if (depth > 1) { Ember.propertyDidChange(this.value(), path); }
    path = 'this.' + path;
    if (this._paths[path] > 0) { Ember.propertyDidChange(this.value(), path); }
  }
};

ChainNodePrototype.didChange = function(suppressEvent) {
  // invalidate my own value first.
  if (this._watching) {
    var obj = this._parent.value();
    if (obj !== this._object) {
      removeChainWatcher(this._object, this._key, this);
      this._object = obj;
      addChainWatcher(obj, this._key, this);
    }
    this._value  = undefined;

    // Special-case: the EachProxy relies on immediate evaluation to
    // establish its observers.
    if (this._parent && this._parent._key === '@each')
      this.value();
  }

  // then notify chains...
  var chains = this._chains;
  if (chains) {
    for(var key in chains) {
      if (!chains.hasOwnProperty(key)) { continue; }
      chains[key].didChange(suppressEvent);
    }
  }

  if (suppressEvent) { return; }

  // and finally tell parent about my path changing...
  if (this._parent) { this._parent.chainDidChange(this, this._key, 1); }
};

// get the chains for the current object.  If the current object has
// chains inherited from the proto they will be cloned and reconfigured for
// the current object.
function chainsFor(obj) {
  var m = metaFor(obj), ret = m.chains;
  if (!ret) {
    ret = m.chains = new ChainNode(null, null, obj);
  } else if (ret.value() !== obj) {
    ret = m.chains = ret.copy(obj);
  }
  return ret;
}

function notifyChains(obj, m, keyName, methodName, arg) {
  var nodes = m.chainWatchers;

  if (!nodes || nodes.__emberproto__ !== obj) { return; } // nothing to do

  nodes = nodes[keyName];
  if (!nodes) { return; }

  for(var key in nodes) {
    if (!nodes.hasOwnProperty(key)) { continue; }
    nodes[key][methodName](arg);
  }
}

Ember.overrideChains = function(obj, keyName, m) {
  notifyChains(obj, m, keyName, 'didChange', true);
};

function chainsWillChange(obj, keyName, m) {
  notifyChains(obj, m, keyName, 'willChange');
}

function chainsDidChange(obj, keyName, m) {
  notifyChains(obj, m, keyName, 'didChange');
}

// ..........................................................
// WATCH
//

/**
  @private

  Starts watching a property on an object.  Whenever the property changes,
  invokes Ember.propertyWillChange and Ember.propertyDidChange.  This is the
  primitive used by observers and dependent keys; usually you will never call
  this method directly but instead use higher level methods like
  Ember.addObserver().

  @method watch
  @for Ember
  @param obj
  @param {String} keyName
*/
Ember.watch = function(obj, keyName) {
  // can't watch length on Array - it is special...
  if (keyName === 'length' && Ember.typeOf(obj) === 'array') { return this; }

  var m = metaFor(obj), watching = m.watching, desc;

  // activate watching first time
  if (!watching[keyName]) {
    watching[keyName] = 1;
    if (isKeyName(keyName)) {
      desc = m.descs[keyName];
      if (desc && desc.willWatch) { desc.willWatch(obj, keyName); }

      if ('function' === typeof obj.willWatchProperty) {
        obj.willWatchProperty(keyName);
      }

      if (MANDATORY_SETTER && keyName in obj) {
        m.values[keyName] = obj[keyName];
        o_defineProperty(obj, keyName, {
          configurable: true,
          enumerable: true,
          set: function() {
            Ember.assert('Must use Ember.set() to access this property', false);
          },
          get: function() {
            var meta = this[META_KEY];
            return meta && meta.values[keyName];
          }
        });
      }
    } else {
      chainsFor(obj).add(keyName);
    }

  }  else {
    watching[keyName] = (watching[keyName] || 0) + 1;
  }
  return this;
};

Ember.isWatching = function isWatching(obj, key) {
  var meta = obj[META_KEY];
  return (meta && meta.watching[key]) > 0;
};

Ember.watch.flushPending = flushPendingChains;

Ember.unwatch = function(obj, keyName) {
  // can't watch length on Array - it is special...
  if (keyName === 'length' && Ember.typeOf(obj) === 'array') { return this; }

  var m = metaFor(obj), watching = m.watching, desc;

  if (watching[keyName] === 1) {
    watching[keyName] = 0;

    if (isKeyName(keyName)) {
      desc = m.descs[keyName];
      if (desc && desc.didUnwatch) { desc.didUnwatch(obj, keyName); }

      if ('function' === typeof obj.didUnwatchProperty) {
        obj.didUnwatchProperty(keyName);
      }

      if (MANDATORY_SETTER && keyName in obj) {
        o_defineProperty(obj, keyName, {
          configurable: true,
          enumerable: true,
          writable: true,
          value: m.values[keyName]
        });
        delete m.values[keyName];
      }
    } else {
      chainsFor(obj).remove(keyName);
    }

  } else if (watching[keyName]>1) {
    watching[keyName]--;
  }

  return this;
};

/**
  @private

  Call on an object when you first beget it from another object.  This will
  setup any chained watchers on the object instance as needed.  This method is
  safe to call multiple times.

  @method rewatch
  @for Ember
  @param obj
*/
Ember.rewatch = function(obj) {
  var m = metaFor(obj, false), chains = m.chains;

  // make sure the object has its own guid.
  if (GUID_KEY in obj && !obj.hasOwnProperty(GUID_KEY)) {
    Ember.generateGuid(obj, 'ember');
  }

  // make sure any chained watchers update.
  if (chains && chains.value() !== obj) {
    m.chains = chains.copy(obj);
  }

  return this;
};

Ember.finishChains = function(obj) {
  var m = metaFor(obj, false), chains = m.chains;
  if (chains) {
    if (chains.value() !== obj) {
      m.chains = chains = chains.copy(obj);
    }
    chains.didChange(true);
  }
};

// ..........................................................
// PROPERTY CHANGES
//

/**
  This function is called just before an object property is about to change.
  It will notify any before observers and prepare caches among other things.

  Normally you will not need to call this method directly but if for some
  reason you can't directly watch a property you can invoke this method
  manually along with `Ember.propertyDidChange()` which you should call just
  after the property value changes.

  @method propertyWillChange
  @for Ember
  @param {Object} obj The object with the property that will change
  @param {String} keyName The property key (or path) that will change.
  @return {void}
*/
function propertyWillChange(obj, keyName, value) {
  var m = metaFor(obj, false),
      watching = m.watching[keyName] > 0 || keyName === 'length',
      proto = m.proto,
      desc = m.descs[keyName];

  if (!watching) { return; }
  if (proto === obj) { return; }
  if (desc && desc.willChange) { desc.willChange(obj, keyName); }
  dependentKeysWillChange(obj, keyName, m);
  chainsWillChange(obj, keyName, m);
  Ember.notifyBeforeObservers(obj, keyName);
}

Ember.propertyWillChange = propertyWillChange;

/**
  This function is called just after an object property has changed.
  It will notify any observers and clear caches among other things.

  Normally you will not need to call this method directly but if for some
  reason you can't directly watch a property you can invoke this method
  manually along with `Ember.propertyWilLChange()` which you should call just
  before the property value changes.

  @method propertyDidChange
  @for Ember
  @param {Object} obj The object with the property that will change
  @param {String} keyName The property key (or path) that will change.
  @return {void}
*/
function propertyDidChange(obj, keyName) {
  var m = metaFor(obj, false),
      watching = m.watching[keyName] > 0 || keyName === 'length',
      proto = m.proto,
      desc = m.descs[keyName];

  if (proto === obj) { return; }

  // shouldn't this mean that we're watching this key?
  if (desc && desc.didChange) { desc.didChange(obj, keyName); }
  if (!watching && keyName !== 'length') { return; }

  dependentKeysDidChange(obj, keyName, m);
  chainsDidChange(obj, keyName, m);
  Ember.notifyObservers(obj, keyName);
}

Ember.propertyDidChange = propertyDidChange;

var NODE_STACK = [];

/**
  Tears down the meta on an object so that it can be garbage collected.
  Multiple calls will have no effect.

  @method destroy
  @for Ember
  @param {Object} obj  the object to destroy
  @return {void}
*/
Ember.destroy = function (obj) {
  var meta = obj[META_KEY], node, nodes, key, nodeObject;
  if (meta) {
    obj[META_KEY] = null;
    // remove chainWatchers to remove circular references that would prevent GC
    node = meta.chains;
    if (node) {
      NODE_STACK.push(node);
      // process tree
      while (NODE_STACK.length > 0) {
        node = NODE_STACK.pop();
        // push children
        nodes = node._chains;
        if (nodes) {
          for (key in nodes) {
            if (nodes.hasOwnProperty(key)) {
              NODE_STACK.push(nodes[key]);
            }
          }
        }
        // remove chainWatcher in node object
        if (node._watching) {
          nodeObject = node._object;
          if (nodeObject) {
            removeChainWatcher(nodeObject, node._key, node);
          }
        }
      }
    }
  }
};

})();



(function() {
/**
@module ember-metal
*/

Ember.warn("The CP_DEFAULT_CACHEABLE flag has been removed and computed properties are always cached by default. Use `volatile` if you don't want caching.", Ember.ENV.CP_DEFAULT_CACHEABLE !== false);


var get = Ember.get,
    metaFor = Ember.meta,
    guidFor = Ember.guidFor,
    a_slice = [].slice,
    o_create = Ember.create,
    META_KEY = Ember.META_KEY,
    watch = Ember.watch,
    unwatch = Ember.unwatch;

// ..........................................................
// DEPENDENT KEYS
//

// data structure:
//  meta.deps = {
//   'depKey': {
//     'keyName': count,
//     __emberproto__: SRC_OBJ [to detect clones]
//     },
//   __emberproto__: SRC_OBJ
//  }

/*
  This function returns a map of unique dependencies for a
  given object and key.
*/
function keysForDep(obj, depsMeta, depKey) {
  var keys = depsMeta[depKey];
  if (!keys) {
    // if there are no dependencies yet for a the given key
    // create a new empty list of dependencies for the key
    keys = depsMeta[depKey] = { __emberproto__: obj };
  } else if (keys.__emberproto__ !== obj) {
    // otherwise if the dependency list is inherited from
    // a superclass, clone the hash
    keys = depsMeta[depKey] = o_create(keys);
    keys.__emberproto__ = obj;
  }
  return keys;
}

/* return obj[META_KEY].deps */
function metaForDeps(obj, meta) {
  var deps = meta.deps;
  // If the current object has no dependencies...
  if (!deps) {
    // initialize the dependencies with a pointer back to
    // the current object
    deps = meta.deps = { __emberproto__: obj };
  } else if (deps.__emberproto__ !== obj) {
    // otherwise if the dependencies are inherited from the
    // object's superclass, clone the deps
    deps = meta.deps = o_create(deps);
    deps.__emberproto__ = obj;
  }
  return deps;
}

function addDependentKeys(desc, obj, keyName, meta) {
  // the descriptor has a list of dependent keys, so
  // add all of its dependent keys.
  var depKeys = desc._dependentKeys, depsMeta, idx, len, depKey, keys;
  if (!depKeys) return;

  depsMeta = metaForDeps(obj, meta);

  for(idx = 0, len = depKeys.length; idx < len; idx++) {
    depKey = depKeys[idx];
    // Lookup keys meta for depKey
    keys = keysForDep(obj, depsMeta, depKey);
    // Increment the number of times depKey depends on keyName.
    keys[keyName] = (keys[keyName] || 0) + 1;
    // Watch the depKey
    watch(obj, depKey);
  }
}

function removeDependentKeys(desc, obj, keyName, meta) {
  // the descriptor has a list of dependent keys, so
  // add all of its dependent keys.
  var depKeys = desc._dependentKeys, depsMeta, idx, len, depKey, keys;
  if (!depKeys) return;

  depsMeta = metaForDeps(obj, meta);

  for(idx = 0, len = depKeys.length; idx < len; idx++) {
    depKey = depKeys[idx];
    // Lookup keys meta for depKey
    keys = keysForDep(obj, depsMeta, depKey);
    // Increment the number of times depKey depends on keyName.
    keys[keyName] = (keys[keyName] || 0) - 1;
    // Watch the depKey
    unwatch(obj, depKey);
  }
}

// ..........................................................
// COMPUTED PROPERTY
//

/**
  @class ComputedProperty
  @namespace Ember
  @extends Ember.Descriptor
  @constructor
*/
function ComputedProperty(func, opts) {
  this.func = func;
  this._cacheable = (opts && opts.cacheable !== undefined) ? opts.cacheable : true;
  this._dependentKeys = opts && opts.dependentKeys;
}

Ember.ComputedProperty = ComputedProperty;
ComputedProperty.prototype = new Ember.Descriptor();

var ComputedPropertyPrototype = ComputedProperty.prototype;

/**
  Call on a computed property to set it into cacheable mode.  When in this
  mode the computed property will automatically cache the return value of
  your function until one of the dependent keys changes.

      MyApp.president = Ember.Object.create({
        fullName: function() {
          return this.get('firstName') + ' ' + this.get('lastName');

          // After calculating the value of this function, Ember.js will
          // return that value without re-executing this function until
          // one of the dependent properties change.
        }.property('firstName', 'lastName')
      });

  Properties are cacheable by default.

  @method cacheable
  @param {Boolean} aFlag optional set to false to disable caching
  @chainable
*/
ComputedPropertyPrototype.cacheable = function(aFlag) {
  this._cacheable = aFlag !== false;
  return this;
};

/**
  Call on a computed property to set it into non-cached mode.  When in this
  mode the computed property will not automatically cache the return value.

      MyApp.outsideService = Ember.Object.create({
        value: function() {
          return OutsideService.getValue();
        }.property().volatile()
      });

  @method volatile
  @chainable
*/
ComputedPropertyPrototype.volatile = function() {
  return this.cacheable(false);
};

/**
  Sets the dependent keys on this computed property.  Pass any number of
  arguments containing key paths that this computed property depends on.

      MyApp.president = Ember.Object.create({
        fullName: Ember.computed(function() {
          return this.get('firstName') + ' ' + this.get('lastName');

          // Tell Ember.js that this computed property depends on firstName
          // and lastName
        }).property('firstName', 'lastName')
      });

  @method property
  @param {String} path* zero or more property paths
  @chainable
*/
ComputedPropertyPrototype.property = function() {
  var args = [];
  for (var i = 0, l = arguments.length; i < l; i++) {
    args.push(arguments[i]);
  }
  this._dependentKeys = args;
  return this;
};

/**
  In some cases, you may want to annotate computed properties with additional
  metadata about how they function or what values they operate on. For example,
  computed property functions may close over variables that are then no longer
  available for introspection.

  You can pass a hash of these values to a computed property like this:

      person: function() {
        var personId = this.get('personId');
        return App.Person.create({ id: personId });
      }.property().meta({ type: App.Person })

  The hash that you pass to the `meta()` function will be saved on the
  computed property descriptor under the `_meta` key. Ember runtime
  exposes a public API for retrieving these values from classes,
  via the `metaForProperty()` function.

  @method meta
  @param {Hash} meta
  @chainable
*/

ComputedPropertyPrototype.meta = function(meta) {
  if (arguments.length === 0) {
    return this._meta || {};
  } else {
    this._meta = meta;
    return this;
  }
};

/* impl descriptor API */
ComputedPropertyPrototype.willWatch = function(obj, keyName) {
  // watch already creates meta for this instance
  var meta = obj[META_KEY];
  Ember.assert('watch should have setup meta to be writable', meta.source === obj);
  if (!(keyName in meta.cache)) {
    addDependentKeys(this, obj, keyName, meta);
  }
};

ComputedPropertyPrototype.didUnwatch = function(obj, keyName) {
  var meta = obj[META_KEY];
  Ember.assert('unwatch should have setup meta to be writable', meta.source === obj);
  if (!(keyName in meta.cache)) {
    // unwatch already creates meta for this instance
    removeDependentKeys(this, obj, keyName, meta);
  }
};

/* impl descriptor API */
ComputedPropertyPrototype.didChange = function(obj, keyName) {
  // _suspended is set via a CP.set to ensure we don't clear
  // the cached value set by the setter
  if (this._cacheable && this._suspended !== obj) {
    var meta = metaFor(obj);
    if (keyName in meta.cache) {
      delete meta.cache[keyName];
      if (!meta.watching[keyName]) {
        removeDependentKeys(this, obj, keyName, meta);
      }
    }
  }
};

/* impl descriptor API */
ComputedPropertyPrototype.get = function(obj, keyName) {
  var ret, cache, meta;
  if (this._cacheable) {
    meta = metaFor(obj);
    cache = meta.cache;
    if (keyName in cache) { return cache[keyName]; }
    ret = cache[keyName] = this.func.call(obj, keyName);
    if (!meta.watching[keyName]) {
      addDependentKeys(this, obj, keyName, meta);
    }
  } else {
    ret = this.func.call(obj, keyName);
  }
  return ret;
};

/* impl descriptor API */
ComputedPropertyPrototype.set = function(obj, keyName, value) {
  var cacheable = this._cacheable,
      meta = metaFor(obj, cacheable),
      watched = meta.watching[keyName],
      oldSuspended = this._suspended,
      hadCachedValue = false,
      ret;
  this._suspended = obj;
  try {
    ret = this.func.call(obj, keyName, value);

    if (cacheable && keyName in meta.cache) {
      if (meta.cache[keyName] === ret) {
        return;
      }
      hadCachedValue = true;
    }

    if (watched) { Ember.propertyWillChange(obj, keyName); }

    if (cacheable && hadCachedValue) {
      delete meta.cache[keyName];
    }

    if (cacheable) {
      if (!watched && !hadCachedValue) {
        addDependentKeys(this, obj, keyName, meta);
      }
      meta.cache[keyName] = ret;
    }

    if (watched) { Ember.propertyDidChange(obj, keyName); }
  } finally {
    this._suspended = oldSuspended;
  }
  return ret;
};

/* called when property is defined */
ComputedPropertyPrototype.setup = function(obj, keyName) {
  var meta = obj[META_KEY];
  if (meta && meta.watching[keyName]) {
    addDependentKeys(this, obj, keyName, metaFor(obj));
  }
};

/* called before property is overridden */
ComputedPropertyPrototype.teardown = function(obj, keyName) {
  var meta = metaFor(obj);

  if (meta.watching[keyName] || keyName in meta.cache) {
    removeDependentKeys(this, obj, keyName, meta);
  }

  if (this._cacheable) { delete meta.cache[keyName]; }

  return null; // no value to restore
};


/**
  This helper returns a new property descriptor that wraps the passed
  computed property function.  You can use this helper to define properties
  with mixins or via Ember.defineProperty().

  The function you pass will be used to both get and set property values.
  The function should accept two parameters, key and value.  If value is not
  undefined you should set the value first.  In either case return the
  current value of the property.

  @method computed
  @for Ember
  @param {Function} func The computed property function.
  @return {Ember.ComputedProperty} property descriptor instance
*/
Ember.computed = function(func) {
  var args;

  if (arguments.length > 1) {
    args = a_slice.call(arguments, 0, -1);
    func = a_slice.call(arguments, -1)[0];
  }

  var cp = new ComputedProperty(func);

  if (args) {
    cp.property.apply(cp, args);
  }

  return cp;
};

/**
  Returns the cached value for a property, if one exists.
  This can be useful for peeking at the value of a computed
  property that is generated lazily, without accidentally causing
  it to be created.

  @method cacheFor
  @for Ember
  @param {Object} obj the object whose property you want to check
  @param {String} key the name of the property whose cached value you want
                      to return
*/
Ember.cacheFor = function cacheFor(obj, key) {
  var cache = metaFor(obj, false).cache;

  if (cache && key in cache) {
    return cache[key];
  }
};

/**
  @method computed.not
  @for Ember
  @param {String} dependentKey
*/
Ember.computed.not = function(dependentKey) {
  return Ember.computed(dependentKey, function(key) {
    return !get(this, dependentKey);
  });
};

/**
  @method computed.empty
  @for Ember
  @param {String} dependentKey
*/
Ember.computed.empty = function(dependentKey) {
  return Ember.computed(dependentKey, function(key) {
    var val = get(this, dependentKey);
    return val === undefined || val === null || val === '' || (Ember.isArray(val) && get(val, 'length') === 0);
  });
};

/**
  @method computed.bool
  @for Ember
  @param {String} dependentKey
*/
Ember.computed.bool = function(dependentKey) {
  return Ember.computed(dependentKey, function(key) {
    return !!get(this, dependentKey);
  });
};

})();



(function() {
/**
@module ember-metal
*/

var o_create = Ember.create,
    meta = Ember.meta,
    metaPath = Ember.metaPath,
    guidFor = Ember.guidFor,
    a_slice = [].slice;

/*
  The event system uses a series of nested hashes to store listeners on an
  object. When a listener is registered, or when an event arrives, these
  hashes are consulted to determine which target and action pair to invoke.

  The hashes are stored in the object's meta hash, and look like this:

      // Object's meta hash
      {
        listeners: {               // variable name: `listenerSet`
          "foo:changed": {         // variable name: `targetSet`
            [targetGuid]: {        // variable name: `actionSet`
              [methodGuid]: {      // variable name: `action`
                target: [Object object],
                method: [Function function]
              }
            }
          }
        }
      }

*/

// Gets the set of all actions, keyed on the guid of each action's
// method property.
function actionSetFor(obj, eventName, target, writable) {
  return metaPath(obj, ['listeners', eventName, guidFor(target)], writable);
}

// Gets the set of all targets, keyed on the guid of each action's
// target property.
function targetSetFor(obj, eventName) {
  var listenerSet = meta(obj, false).listeners;
  if (!listenerSet) { return false; }

  return listenerSet[eventName] || false;
}

// TODO: This knowledge should really be a part of the
// meta system.
var SKIP_PROPERTIES = { __ember_source__: true };

function iterateSet(targetSet, callback) {
  if (!targetSet) { return false; }
  // Iterate through all elements of the target set
  for(var targetGuid in targetSet) {
    if (SKIP_PROPERTIES[targetGuid]) { continue; }

    var actionSet = targetSet[targetGuid];
    if (actionSet) {
      // Iterate through the elements of the action set
      for(var methodGuid in actionSet) {
        if (SKIP_PROPERTIES[methodGuid]) { continue; }

        var action = actionSet[methodGuid];
        if (action) {
          if (callback(action) === true) {
            return true;
          }
        }
      }
    }
  }
  return false;
}

function invokeAction(action, params, sender) {
  var method = action.method, target = action.target;
  // If there is no target, the target is the object
  // on which the event was fired.
  if (!target) { target = sender; }
  if ('string' === typeof method) { method = target[method]; }
  if (params) {
    method.apply(target, params);
  } else {
    method.apply(target);
  }
}

function targetSetUnion(obj, eventName, targetSet) {
  iterateSet(targetSetFor(obj, eventName), function (action) {
    var targetGuid = guidFor(action.target),
        methodGuid = guidFor(action.method),
        actionSet = targetSet[targetGuid];
    if (!actionSet) actionSet = targetSet[targetGuid] = {};
    actionSet[methodGuid] = action;
  });
}

function targetSetDiff(obj, eventName, targetSet) {
  var diffTargetSet = {};
  iterateSet(targetSetFor(obj, eventName), function (action) {
    var targetGuid = guidFor(action.target),
        methodGuid = guidFor(action.method),
        actionSet = targetSet[targetGuid],
        diffActionSet = diffTargetSet[targetGuid];
    if (!actionSet) actionSet = targetSet[targetGuid] = {};
    if (actionSet[methodGuid]) return;
    actionSet[methodGuid] = action;
    if (!diffActionSet) diffActionSet = diffTargetSet[targetGuid] = {};
    diffActionSet[methodGuid] = action;
  });
  return diffTargetSet;
}

/**
  Add an event listener

  @method addListener
  @for Ember
  @param obj
  @param {String} eventName
  @param {Object|Function} targetOrMethod A target object or a function
  @param {Function|String} method A function or the name of a function to be called on `target`
*/
function addListener(obj, eventName, target, method, guid) {
  Ember.assert("You must pass at least an object and event name to Ember.addListener", !!obj && !!eventName);

  if (!method && 'function' === typeof target) {
    method = target;
    target = null;
  }

  var actionSet = actionSetFor(obj, eventName, target, true),
      // guid is used in case we wrapp given method to register
      // listener with method guid instead of the wrapper guid
      methodGuid = guid || guidFor(method);

  if (!actionSet[methodGuid]) {
    actionSet[methodGuid] = { target: target, method: method };
  }

  if ('function' === typeof obj.didAddListener) {
    obj.didAddListener(eventName, target, method);
  }
}

/**
  Remove an event listener

  Arguments should match those passed to {{#crossLink "Ember/addListener"}}{{/crossLink}}

  @method removeListener
  @for Ember
  @param obj
  @param {String} eventName
  @param {Object|Function} targetOrMethod A target object or a function
  @param {Function|String} method A function or the name of a function to be called on `target`
*/
function removeListener(obj, eventName, target, method) {
  Ember.assert("You must pass at least an object and event name to Ember.removeListener", !!obj && !!eventName);

  if (!method && 'function' === typeof target) {
    method = target;
    target = null;
  }

  function _removeListener(target, method) {
    var actionSet = actionSetFor(obj, eventName, target, true),
        methodGuid = guidFor(method);

    // we can't simply delete this parameter, because if we do, we might
    // re-expose the property from the prototype chain.
    if (actionSet && actionSet[methodGuid]) { actionSet[methodGuid] = null; }

    if ('function' === typeof obj.didRemoveListener) {
      obj.didRemoveListener(eventName, target, method);
    }
  }

  if (method) {
    _removeListener(target, method);
  } else {
    iterateSet(targetSetFor(obj, eventName), function(action) {
      _removeListener(action.target, action.method);
    });
  }
}

/**
  @private

  Suspend listener during callback.

  This should only be used by the target of the event listener
  when it is taking an action that would cause the event, e.g.
  an object might suspend its property change listener while it is
  setting that property.

  @method suspendListener
  @for Ember
  @param obj
  @param {String} eventName
  @param {Object|Function} targetOrMethod A target object or a function
  @param {Function|String} method A function or the name of a function to be called on `target`
  @param {Function} callback
*/
function suspendListener(obj, eventName, target, method, callback) {
  if (!method && 'function' === typeof target) {
    method = target;
    target = null;
  }

  var actionSet = actionSetFor(obj, eventName, target, true),
      methodGuid = guidFor(method),
      action = actionSet && actionSet[methodGuid];

  actionSet[methodGuid] = null;
  try {
    return callback.call(target);
  } finally {
    actionSet[methodGuid] = action;
  }
}

/**
  @private

  Suspend listener during callback.

  This should only be used by the target of the event listener
  when it is taking an action that would cause the event, e.g.
  an object might suspend its property change listener while it is
  setting that property.

  @method suspendListener
  @for Ember
  @param obj
  @param {Array} eventName Array of event names
  @param {Object|Function} targetOrMethod A target object or a function
  @param {Function|String} method A function or the name of a function to be called on `target`
  @param {Function} callback
*/
function suspendListeners(obj, eventNames, target, method, callback) {
  if (!method && 'function' === typeof target) {
    method = target;
    target = null;
  }

  var oldActions = [],
      actionSets = [],
      eventName, actionSet, methodGuid, action, i, l;

  for (i=0, l=eventNames.length; i<l; i++) {
    eventName = eventNames[i];
    actionSet = actionSetFor(obj, eventName, target, true),
    methodGuid = guidFor(method);

    oldActions.push(actionSet && actionSet[methodGuid]);
    actionSets.push(actionSet);

    actionSet[methodGuid] = null;
  }

  try {
    return callback.call(target);
  } finally {
    for (i=0, l=oldActions.length; i<l; i++) {
      eventName = eventNames[i];
      actionSets[i][methodGuid] = oldActions[i];
    }
  }
}

/**
  @private

  Return a list of currently watched events

  @method watchedEvents
  @for Ember
  @param obj
*/
function watchedEvents(obj) {
  var listeners = meta(obj, false).listeners, ret = [];

  if (listeners) {
    for(var eventName in listeners) {
      if (!SKIP_PROPERTIES[eventName] && listeners[eventName]) {
        ret.push(eventName);
      }
    }
  }
  return ret;
}

/**
  @method sendEvent
  @for Ember
  @param obj
  @param {String} eventName
  @param {Array} params
  @return true
*/
function sendEvent(obj, eventName, params, targetSet) {
  // first give object a chance to handle it
  if (obj !== Ember && 'function' === typeof obj.sendEvent) {
    obj.sendEvent(eventName, params);
  }

  if (!targetSet) targetSet = targetSetFor(obj, eventName);

  iterateSet(targetSet, function (action) {
    invokeAction(action, params, obj);
  });
  return true;
}

/**
  @private
  @method hasListeners
  @for Ember
  @param obj
  @param {String} eventName
*/
function hasListeners(obj, eventName) {
  if (iterateSet(targetSetFor(obj, eventName), function() { return true; })) {
    return true;
  }

  // no listeners!  might as well clean this up so it is faster later.
  var set = metaPath(obj, ['listeners'], true);
  set[eventName] = null;

  return false;
}

/**
  @private
  @method listenersFor
  @for Ember
  @param obj
  @param {String} eventName
*/
function listenersFor(obj, eventName) {
  var ret = [];
  iterateSet(targetSetFor(obj, eventName), function (action) {
    ret.push([action.target, action.method]);
  });
  return ret;
}

Ember.addListener = addListener;
Ember.removeListener = removeListener;
Ember._suspendListener = suspendListener;
Ember._suspendListeners = suspendListeners;
Ember.sendEvent = sendEvent;
Ember.hasListeners = hasListeners;
Ember.watchedEvents = watchedEvents;
Ember.listenersFor = listenersFor;
Ember.listenersDiff = targetSetDiff;
Ember.listenersUnion = targetSetUnion;
})();



(function() {
// Ember.Logger
// Ember.watch.flushPending
// Ember.beginPropertyChanges, Ember.endPropertyChanges
// Ember.guidFor

/**
@module ember-metal
*/

// ..........................................................
// HELPERS
//

var slice = [].slice,
    forEach = Ember.ArrayPolyfills.forEach;

// invokes passed params - normalizing so you can pass target/func,
// target/string or just func
function invoke(target, method, args, ignore) {

  if (method === undefined) {
    method = target;
    target = undefined;
  }

  if ('string' === typeof method) { method = target[method]; }
  if (args && ignore > 0) {
    args = args.length > ignore ? slice.call(args, ignore) : null;
  }

  return Ember.handleErrors(function() {
    // IE8's Function.prototype.apply doesn't accept undefined/null arguments.
    return method.apply(target || this, args || []);
  }, this);
}


// ..........................................................
// RUNLOOP
//

var timerMark; // used by timers...

/**
Ember RunLoop (Private)

@class RunLoop
@namespace Ember
@private
@constructor
*/
var RunLoop = function(prev) {
  this._prev = prev || null;
  this.onceTimers = {};
};

RunLoop.prototype = {
  /**
    @method end
  */
  end: function() {
    this.flush();
  },

  /**
    @method prev
  */
  prev: function() {
    return this._prev;
  },

  // ..........................................................
  // Delayed Actions
  //

  /**
    @method schedule
    @param {String} queueName
    @param target
    @param method
  */
  schedule: function(queueName, target, method) {
    var queues = this._queues, queue;
    if (!queues) { queues = this._queues = {}; }
    queue = queues[queueName];
    if (!queue) { queue = queues[queueName] = []; }

    var args = arguments.length > 3 ? slice.call(arguments, 3) : null;
    queue.push({ target: target, method: method, args: args });
    return this;
  },

  /**
    @method flush
    @param {String} queueName
  */
  flush: function(queueName) {
    var queueNames, idx, len, queue, log;

    if (!this._queues) { return this; } // nothing to do

    function iter(item) {
      invoke(item.target, item.method, item.args);
    }

    Ember.watch.flushPending(); // make sure all chained watchers are setup

    if (queueName) {
      while (this._queues && (queue = this._queues[queueName])) {
        this._queues[queueName] = null;

        // the sync phase is to allow property changes to propagate.  don't
        // invoke observers until that is finished.
        if (queueName === 'sync') {
          log = Ember.LOG_BINDINGS;
          if (log) { Ember.Logger.log('Begin: Flush Sync Queue'); }

          Ember.beginPropertyChanges();
          try {
            forEach.call(queue, iter);
          } finally {
            Ember.endPropertyChanges();
          }

          if (log) { Ember.Logger.log('End: Flush Sync Queue'); }

        } else {
          forEach.call(queue, iter);
        }
      }

    } else {
      queueNames = Ember.run.queues;
      len = queueNames.length;
      idx = 0;

      outerloop:
      while (idx < len) {
        queueName = queueNames[idx];
        queue = this._queues && this._queues[queueName];
        delete this._queues[queueName];

        if (queue) {
          // the sync phase is to allow property changes to propagate.  don't
          // invoke observers until that is finished.
          if (queueName === 'sync') {
            log = Ember.LOG_BINDINGS;
            if (log) { Ember.Logger.log('Begin: Flush Sync Queue'); }

            Ember.beginPropertyChanges();
            try {
              forEach.call(queue, iter);
            } finally {
              Ember.endPropertyChanges();
            }

            if (log) { Ember.Logger.log('End: Flush Sync Queue'); }
          } else {
            forEach.call(queue, iter);
          }
        }

        // Loop through prior queues
        for (var i = 0; i <= idx; i++) {
          if (this._queues && this._queues[queueNames[i]]) {
            // Start over at the first queue with contents
            idx = i;
            continue outerloop;
          }
        }

        idx++;
      }
    }

    timerMark = null;

    return this;
  }

};

Ember.RunLoop = RunLoop;

// ..........................................................
// Ember.run - this is ideally the only public API the dev sees
//

/**
  Runs the passed target and method inside of a RunLoop, ensuring any
  deferred actions including bindings and views updates are flushed at the
  end.

  Normally you should not need to invoke this method yourself.  However if
  you are implementing raw event handlers when interfacing with other
  libraries or plugins, you should probably wrap all of your code inside this
  call.

      Ember.run(function(){
        // code to be execute within a RunLoop 
      });

  @class run
  @namespace Ember
  @static
  @constructor
  @param {Object} [target] target of method to call
  @param {Function|String} method Method to invoke.
    May be a function or a string.  If you pass a string
    then it will be looked up on the passed target.
  @param {Object} [args*] Any additional arguments you wish to pass to the method.
  @return {Object} return value from invoking the passed function.
*/
Ember.run = function(target, method) {
  var ret, loop;
  run.begin();
  try {
    if (target || method) { ret = invoke(target, method, arguments, 2); }
  } finally {
    run.end();
  }
  return ret;
};

var run = Ember.run;


/**
  Begins a new RunLoop.  Any deferred actions invoked after the begin will
  be buffered until you invoke a matching call to Ember.run.end().  This is
  an lower-level way to use a RunLoop instead of using Ember.run().

      Ember.run.begin();
      // code to be execute within a RunLoop 
      Ember.run.end();

  @method begin
  @return {void}
*/
Ember.run.begin = function() {
  run.currentRunLoop = new RunLoop(run.currentRunLoop);
};

/**
  Ends a RunLoop.  This must be called sometime after you call Ember.run.begin()
  to flush any deferred actions.  This is a lower-level way to use a RunLoop
  instead of using Ember.run().

      Ember.run.begin();
      // code to be execute within a RunLoop 
      Ember.run.end();

  @method end
  @return {void}
*/
Ember.run.end = function() {
  Ember.assert('must have a current run loop', run.currentRunLoop);
  try {
    run.currentRunLoop.end();
  }
  finally {
    run.currentRunLoop = run.currentRunLoop.prev();
  }
};

/**
  Array of named queues.  This array determines the order in which queues
  are flushed at the end of the RunLoop.  You can define your own queues by
  simply adding the queue name to this array.  Normally you should not need
  to inspect or modify this property.

  @property queues
  @type Array
  @default ['sync', 'actions', 'destroy', 'timers']
*/
Ember.run.queues = ['sync', 'actions', 'destroy', 'timers'];

/**
  Adds the passed target/method and any optional arguments to the named
  queue to be executed at the end of the RunLoop.  If you have not already
  started a RunLoop when calling this method one will be started for you
  automatically.

  At the end of a RunLoop, any methods scheduled in this way will be invoked.
  Methods will be invoked in an order matching the named queues defined in
  the run.queues property.

      Ember.run.schedule('timers', this, function(){
        // this will be executed at the end of the RunLoop, when timers are run
        console.log("scheduled on timers queue");
      });
      Ember.run.schedule('sync', this, function(){
        // this will be executed at the end of the RunLoop, when bindings are synced
        console.log("scheduled on sync queue");
      });
      // Note the functions will be run in order based on the run queues order. Output would be:
      //   scheduled on sync queue
      //   scheduled on timers queue

  @method schedule
  @param {String} queue The name of the queue to schedule against.
    Default queues are 'sync' and 'actions'

  @param {Object} [target] target object to use as the context when invoking a method.

  @param {String|Function} method The method to invoke.  If you pass a string it
    will be resolved on the target object at the time the scheduled item is
    invoked allowing you to change the target function.

  @param {Object} [arguments*] Optional arguments to be passed to the queued method.

  @return {void}
*/
Ember.run.schedule = function(queue, target, method) {
  var loop = run.autorun();
  loop.schedule.apply(loop, arguments);
};

var scheduledAutorun;
function autorun() {
  scheduledAutorun = null;
  if (run.currentRunLoop) { run.end(); }
}

// Used by global test teardown
Ember.run.hasScheduledTimers = function() {
  return !!(scheduledAutorun || scheduledLater || scheduledNext);
};

// Used by global test teardown
Ember.run.cancelTimers = function () {
  if (scheduledAutorun) {
    clearTimeout(scheduledAutorun);
    scheduledAutorun = null;
  }
  if (scheduledLater) {
    clearTimeout(scheduledLater);
    scheduledLater = null;
  }
  if (scheduledNext) {
    clearTimeout(scheduledNext);
    scheduledNext = null;
  }
  timers = {};
};

/**
  Begins a new RunLoop if necessary and schedules a timer to flush the
  RunLoop at a later time.  This method is used by parts of Ember to
  ensure the RunLoop always finishes.  You normally do not need to call this
  method directly.  Instead use Ember.run().


  @method autorun
  @example
    Ember.run.autorun();
  @return {Ember.RunLoop} the new current RunLoop
*/
Ember.run.autorun = function() {
  if (!run.currentRunLoop) {
    Ember.assert("You have turned on testing mode, which disabled the run-loop's autorun. You will need to wrap any code with asynchronous side-effects in an Ember.run", !Ember.testing);

    run.begin();

    if (!scheduledAutorun) {
      scheduledAutorun = setTimeout(autorun, 1);
    }
  }

  return run.currentRunLoop;
};

/**
  Immediately flushes any events scheduled in the 'sync' queue.  Bindings
  use this queue so this method is a useful way to immediately force all
  bindings in the application to sync.

  You should call this method anytime you need any changed state to propagate
  throughout the app immediately without repainting the UI.

      Ember.run.sync();

  @method sync
  @return {void}
*/
Ember.run.sync = function() {
  run.autorun();
  run.currentRunLoop.flush('sync');
};

// ..........................................................
// TIMERS
//

var timers = {}; // active timers...

var scheduledLater;
function invokeLaterTimers() {
  scheduledLater = null;
  var now = (+ new Date()), earliest = -1;
  for (var key in timers) {
    if (!timers.hasOwnProperty(key)) { continue; }
    var timer = timers[key];
    if (timer && timer.expires) {
      if (now >= timer.expires) {
        delete timers[key];
        invoke(timer.target, timer.method, timer.args, 2);
      } else {
        if (earliest<0 || (timer.expires < earliest)) earliest=timer.expires;
      }
    }
  }

  // schedule next timeout to fire...
  if (earliest > 0) { scheduledLater = setTimeout(invokeLaterTimers, earliest-(+ new Date())); }
}

/**
  Invokes the passed target/method and optional arguments after a specified
  period if time.  The last parameter of this method must always be a number
  of milliseconds.

  You should use this method whenever you need to run some action after a
  period of time instead of using setTimeout().  This method will ensure that
  items that expire during the same script execution cycle all execute
  together, which is often more efficient than using a real setTimeout.

      Ember.run.later(myContext, function(){
        // code here will execute within a RunLoop in about 500ms with this == myContext
      }, 500);

  @method later
  @param {Object} [target] target of method to invoke

  @param {Function|String} method The method to invoke.
    If you pass a string it will be resolved on the
    target at the time the method is invoked.

  @param {Object} [args*] Optional arguments to pass to the timeout.

  @param {Number} wait
    Number of milliseconds to wait.

  @return {String} a string you can use to cancel the timer in
    {{#crossLink "Ember/run.cancel"}}{{/crossLink}} later.
*/
Ember.run.later = function(target, method) {
  var args, expires, timer, guid, wait;

  // setTimeout compatibility...
  if (arguments.length===2 && 'function' === typeof target) {
    wait   = method;
    method = target;
    target = undefined;
    args   = [target, method];
  } else {
    args = slice.call(arguments);
    wait = args.pop();
  }

  expires = (+ new Date()) + wait;
  timer   = { target: target, method: method, expires: expires, args: args };
  guid    = Ember.guidFor(timer);
  timers[guid] = timer;
  run.once(timers, invokeLaterTimers);
  return guid;
};

function invokeOnceTimer(guid, onceTimers) {
  if (onceTimers[this.tguid]) { delete onceTimers[this.tguid][this.mguid]; }
  if (timers[guid]) { invoke(this.target, this.method, this.args); }
  delete timers[guid];
}

function scheduleOnce(queue, target, method, args) {
  var tguid = Ember.guidFor(target),
    mguid = Ember.guidFor(method),
    onceTimers = run.autorun().onceTimers,
    guid = onceTimers[tguid] && onceTimers[tguid][mguid],
    timer;

  if (guid && timers[guid]) {
    timers[guid].args = args; // replace args
  } else {
    timer = {
      target: target,
      method: method,
      args:   args,
      tguid:  tguid,
      mguid:  mguid
    };

    guid  = Ember.guidFor(timer);
    timers[guid] = timer;
    if (!onceTimers[tguid]) { onceTimers[tguid] = {}; }
    onceTimers[tguid][mguid] = guid; // so it isn't scheduled more than once

    run.schedule(queue, timer, invokeOnceTimer, guid, onceTimers);
  }

  return guid;
}

/**
  Schedules an item to run one time during the current RunLoop.  Calling
  this method with the same target/method combination will have no effect.

  Note that although you can pass optional arguments these will not be
  considered when looking for duplicates.  New arguments will replace previous
  calls.

      Ember.run(function(){
        var doFoo = function() { foo(); }
        Ember.run.once(myContext, doFoo);
        Ember.run.once(myContext, doFoo);
        // doFoo will only be executed once at the end of the RunLoop
      });

  @method once
  @param {Object} [target] target of method to invoke

  @param {Function|String} method The method to invoke.
    If you pass a string it will be resolved on the
    target at the time the method is invoked.

  @param {Object} [args*] Optional arguments to pass to the timeout.


  @return {Object} timer
*/
Ember.run.once = function(target, method) {
  return scheduleOnce('actions', target, method, slice.call(arguments, 2));
};

Ember.run.scheduleOnce = function(queue, target, method, args) {
  return scheduleOnce(queue, target, method, slice.call(arguments, 3));
};

var scheduledNext;
function invokeNextTimers() {
  scheduledNext = null;
  for(var key in timers) {
    if (!timers.hasOwnProperty(key)) { continue; }
    var timer = timers[key];
    if (timer.next) {
      delete timers[key];
      invoke(timer.target, timer.method, timer.args, 2);
    }
  }
}

/**
  Schedules an item to run after control has been returned to the system.
  This is often equivalent to calling setTimeout(function...,1).

      Ember.run.next(myContext, function(){
        // code to be executed in the next RunLoop, which will be scheduled after the current one
      });

  @method next
  @param {Object} [target] target of method to invoke

  @param {Function|String} method The method to invoke.
    If you pass a string it will be resolved on the
    target at the time the method is invoked.

  @param {Object} [args*] Optional arguments to pass to the timeout.

  @return {Object} timer
*/
Ember.run.next = function(target, method) {
  var guid,
      timer = {
        target: target,
        method: method,
        args: slice.call(arguments),
        next: true
      };

  guid = Ember.guidFor(timer);
  timers[guid] = timer;

  if (!scheduledNext) { scheduledNext = setTimeout(invokeNextTimers, 1); }
  return guid;
};

/**
  Cancels a scheduled item.  Must be a value returned by `Ember.run.later()`,
  `Ember.run.once()`, or `Ember.run.next()`.

      var runNext = Ember.run.next(myContext, function(){
        // will not be executed
      });
      Ember.run.cancel(runNext);

      var runLater = Ember.run.later(myContext, function(){
        // will not be executed
      }, 500);
      Ember.run.cancel(runLater);

      var runOnce = Ember.run.once(myContext, function(){
        // will not be executed
      });
      Ember.run.cancel(runOnce);

  @method cancel
  @param {Object} timer Timer object to cancel
  @return {void}
*/
Ember.run.cancel = function(timer) {
  delete timers[timer];
};

})();



(function() {
// Ember.Logger
// get, set, trySet
// guidFor, isArray, meta
// addObserver, removeObserver
// Ember.run.schedule
/**
@module ember-metal
*/

// ..........................................................
// CONSTANTS
//

/**
  Debug parameter you can turn on. This will log all bindings that fire to
  the console. This should be disabled in production code. Note that you
  can also enable this from the console or temporarily.

  @property LOG_BINDINGS
  @for Ember
  @type Boolean
  @default false
*/
Ember.LOG_BINDINGS = false || !!Ember.ENV.LOG_BINDINGS;

var get     = Ember.get,
    set     = Ember.set,
    guidFor = Ember.guidFor,
    isGlobalPath = Ember.isGlobalPath;


function getWithGlobals(obj, path) {
  return get(isGlobalPath(path) ? Ember.lookup : obj, path);
}

// ..........................................................
// BINDING
//

var Binding = function(toPath, fromPath) {
  this._direction = 'fwd';
  this._from = fromPath;
  this._to   = toPath;
  this._directionMap = Ember.Map.create();
};

/**
@class Binding
@namespace Ember
*/

Binding.prototype = {
  /**
    This copies the Binding so it can be connected to another object.

    @method copy
    @return {Ember.Binding}
  */
  copy: function () {
    var copy = new Binding(this._to, this._from);
    if (this._oneWay) { copy._oneWay = true; }
    return copy;
  },

  // ..........................................................
  // CONFIG
  //

  /**
    This will set "from" property path to the specified value. It will not
    attempt to resolve this property path to an actual object until you
    connect the binding.

    The binding will search for the property path starting at the root object
    you pass when you connect() the binding.  It follows the same rules as
    `get()` - see that method for more information.

    @method from
    @param {String} propertyPath the property path to connect to
    @return {Ember.Binding} receiver
  */
  from: function(path) {
    this._from = path;
    return this;
  },

  /**
    This will set the "to" property path to the specified value. It will not
    attempt to resolve this property path to an actual object until you
    connect the binding.

    The binding will search for the property path starting at the root object
    you pass when you connect() the binding.  It follows the same rules as
    `get()` - see that method for more information.

    @method to
    @param {String|Tuple} propertyPath A property path or tuple
    @return {Ember.Binding} this
  */
  to: function(path) {
    this._to = path;
    return this;
  },

  /**
    Configures the binding as one way. A one-way binding will relay changes
    on the "from" side to the "to" side, but not the other way around. This
    means that if you change the "to" side directly, the "from" side may have
    a different value.

    @method oneWay
    @return {Ember.Binding} receiver
  */
  oneWay: function() {
    this._oneWay = true;
    return this;
  },

  toString: function() {
    var oneWay = this._oneWay ? '[oneWay]' : '';
    return "Ember.Binding<" + guidFor(this) + ">(" + this._from + " -> " + this._to + ")" + oneWay;
  },

  // ..........................................................
  // CONNECT AND SYNC
  //

  /**
    Attempts to connect this binding instance so that it can receive and relay
    changes. This method will raise an exception if you have not set the
    from/to properties yet.

    @method connect
    @param {Object} obj The root object for this binding.
    @return {Ember.Binding} this
  */
  connect: function(obj) {
    Ember.assert('Must pass a valid object to Ember.Binding.connect()', !!obj);

    var fromPath = this._from, toPath = this._to;
    Ember.trySet(obj, toPath, getWithGlobals(obj, fromPath));

    // add an observer on the object to be notified when the binding should be updated
    Ember.addObserver(obj, fromPath, this, this.fromDidChange);

    // if the binding is a two-way binding, also set up an observer on the target
    if (!this._oneWay) { Ember.addObserver(obj, toPath, this, this.toDidChange); }

    this._readyToSync = true;

    return this;
  },

  /**
    Disconnects the binding instance. Changes will no longer be relayed. You
    will not usually need to call this method.

    @method disconnect
    @param {Object} obj The root object you passed when connecting the binding.
    @return {Ember.Binding} this
  */
  disconnect: function(obj) {
    Ember.assert('Must pass a valid object to Ember.Binding.disconnect()', !!obj);

    var twoWay = !this._oneWay;

    // remove an observer on the object so we're no longer notified of
    // changes that should update bindings.
    Ember.removeObserver(obj, this._from, this, this.fromDidChange);

    // if the binding is two-way, remove the observer from the target as well
    if (twoWay) { Ember.removeObserver(obj, this._to, this, this.toDidChange); }

    this._readyToSync = false; // disable scheduled syncs...
    return this;
  },

  // ..........................................................
  // PRIVATE
  //

  /* called when the from side changes */
  fromDidChange: function(target) {
    this._scheduleSync(target, 'fwd');
  },

  /* called when the to side changes */
  toDidChange: function(target) {
    this._scheduleSync(target, 'back');
  },

  _scheduleSync: function(obj, dir) {
    var directionMap = this._directionMap;
    var existingDir = directionMap.get(obj);

    // if we haven't scheduled the binding yet, schedule it
    if (!existingDir) {
      Ember.run.schedule('sync', this, this._sync, obj);
      directionMap.set(obj, dir);
    }

    // If both a 'back' and 'fwd' sync have been scheduled on the same object,
    // default to a 'fwd' sync so that it remains deterministic.
    if (existingDir === 'back' && dir === 'fwd') {
      directionMap.set(obj, 'fwd');
    }
  },

  _sync: function(obj) {
    var log = Ember.LOG_BINDINGS;

    // don't synchronize destroyed objects or disconnected bindings
    if (obj.isDestroyed || !this._readyToSync) { return; }

    // get the direction of the binding for the object we are
    // synchronizing from
    var directionMap = this._directionMap;
    var direction = directionMap.get(obj);

    var fromPath = this._from, toPath = this._to;

    directionMap.remove(obj);

    // if we're synchronizing from the remote object...
    if (direction === 'fwd') {
      var fromValue = getWithGlobals(obj, this._from);
      if (log) {
        Ember.Logger.log(' ', this.toString(), '->', fromValue, obj);
      }
      if (this._oneWay) {
        Ember.trySet(obj, toPath, fromValue);
      } else {
        Ember._suspendObserver(obj, toPath, this, this.toDidChange, function () {
          Ember.trySet(obj, toPath, fromValue);
        });
      }
    // if we're synchronizing *to* the remote object
    } else if (direction === 'back') {
      var toValue = get(obj, this._to);
      if (log) {
        Ember.Logger.log(' ', this.toString(), '<-', toValue, obj);
      }
      Ember._suspendObserver(obj, fromPath, this, this.fromDidChange, function () {
        Ember.trySet(Ember.isGlobalPath(fromPath) ? Ember.lookup : obj, fromPath, toValue);
      });
    }
  }

};

function mixinProperties(to, from) {
  for (var key in from) {
    if (from.hasOwnProperty(key)) {
      to[key] = from[key];
    }
  }
}

mixinProperties(Binding, {

  /**
    See {{#crossLink "Ember.Binding/from"}}{{/crossLink}}

    @method from
    @static
  */
  from: function() {
    var C = this, binding = new C();
    return binding.from.apply(binding, arguments);
  },

  /**
    See {{#crossLink "Ember.Binding/to"}}{{/crossLink}}

    @method to
    @static
  */
  to: function() {
    var C = this, binding = new C();
    return binding.to.apply(binding, arguments);
  },

  /**
    Creates a new Binding instance and makes it apply in a single direction.
    A one-way binding will relay changes on the "from" side object (supplied
    as the `from` argument) the "to" side, but not the other way around.
    This means that if you change the "to" side directly, the "from" side may have
    a different value.

    See {{#crossLink "Binding/oneWay"}}{{/crossLink}}

    @method oneWay
    @param {String} from from path.
    @param {Boolean} [flag] (Optional) passing nothing here will make the binding oneWay.  You can
      instead pass false to disable oneWay, making the binding two way again.
  */
  oneWay: function(from, flag) {
    var C = this, binding = new C(null, from);
    return binding.oneWay(flag);
  }

});

/**
  An Ember.Binding connects the properties of two objects so that whenever the
  value of one property changes, the other property will be changed also.

  ## Automatic Creation of Bindings with `/^*Binding/`-named Properties
  You do not usually create Binding objects directly but instead describe
  bindings in your class or object definition using automatic binding detection.

  Properties ending in a `Binding` suffix will be converted to Ember.Binding instances.
  The value of this property should be a string representing a path to another object or
  a custom binding instanced created using Binding helpers (see "Customizing Your Bindings"):

      valueBinding: "MyApp.someController.title"

  This will create a binding from `MyApp.someController.title` to the `value`
  property of your object instance automatically. Now the two values will be
  kept in sync.

  ## One Way Bindings

  One especially useful binding customization you can use is the `oneWay()`
  helper. This helper tells Ember that you are only interested in
  receiving changes on the object you are binding from. For example, if you
  are binding to a preference and you want to be notified if the preference
  has changed, but your object will not be changing the preference itself, you
  could do:

      bigTitlesBinding: Ember.Binding.oneWay("MyApp.preferencesController.bigTitles")

  This way if the value of MyApp.preferencesController.bigTitles changes the
  "bigTitles" property of your object will change also. However, if you
  change the value of your "bigTitles" property, it will not update the
  preferencesController.

  One way bindings are almost twice as fast to setup and twice as fast to
  execute because the binding only has to worry about changes to one side.

  You should consider using one way bindings anytime you have an object that
  may be created frequently and you do not intend to change a property; only
  to monitor it for changes. (such as in the example above).

  ## Adding Bindings Manually

  All of the examples above show you how to configure a custom binding, but
  the result of these customizations will be a binding template, not a fully
  active Binding instance. The binding will actually become active only when you
  instantiate the object the binding belongs to. It is useful however, to
  understand what actually happens when the binding is activated.

  For a binding to function it must have at least a "from" property and a "to"
  property. The from property path points to the object/key that you want to
  bind from while the to path points to the object/key you want to bind to.

  When you define a custom binding, you are usually describing the property
  you want to bind from (such as "MyApp.someController.value" in the examples
  above). When your object is created, it will automatically assign the value
  you want to bind "to" based on the name of your binding key. In the
  examples above, during init, Ember objects will effectively call
  something like this on your binding:

      binding = Ember.Binding.from(this.valueBinding).to("value");

  This creates a new binding instance based on the template you provide, and
  sets the to path to the "value" property of the new object. Now that the
  binding is fully configured with a "from" and a "to", it simply needs to be
  connected to become active. This is done through the connect() method:

      binding.connect(this);

  Note that when you connect a binding you pass the object you want it to be
  connected to.  This object will be used as the root for both the from and
  to side of the binding when inspecting relative paths.  This allows the
  binding to be automatically inherited by subclassed objects as well.

  Now that the binding is connected, it will observe both the from and to side
  and relay changes.

  If you ever needed to do so (you almost never will, but it is useful to
  understand this anyway), you could manually create an active binding by
  using the Ember.bind() helper method. (This is the same method used by
  to setup your bindings on objects):

      Ember.bind(MyApp.anotherObject, "value", "MyApp.someController.value");

  Both of these code fragments have the same effect as doing the most friendly
  form of binding creation like so:

      MyApp.anotherObject = Ember.Object.create({
        valueBinding: "MyApp.someController.value",

        // OTHER CODE FOR THIS OBJECT...

      });

  Ember's built in binding creation method makes it easy to automatically
  create bindings for you. You should always use the highest-level APIs
  available, even if you understand how it works underneath.

  @class Binding
  @namespace Ember
  @since Ember 0.9
*/
Ember.Binding = Binding;


/**
  Global helper method to create a new binding.  Just pass the root object
  along with a to and from path to create and connect the binding.

  @method bind
  @for Ember
  @param {Object} obj The root object of the transform.

  @param {String} to The path to the 'to' side of the binding.
    Must be relative to obj.

  @param {String} from The path to the 'from' side of the binding.
    Must be relative to obj or a global path.

  @return {Ember.Binding} binding instance
*/
Ember.bind = function(obj, to, from) {
  return new Ember.Binding(to, from).connect(obj);
};

/**
  @method oneWay
  @for Ember
  @param {Object} obj The root object of the transform.

  @param {String} to The path to the 'to' side of the binding.
    Must be relative to obj.

  @param {String} from The path to the 'from' side of the binding.
    Must be relative to obj or a global path.

  @return {Ember.Binding} binding instance
*/
Ember.oneWay = function(obj, to, from) {
  return new Ember.Binding(to, from).oneWay().connect(obj);
};

})();



(function() {
/**
@module ember-metal
*/

var Mixin, REQUIRED, Alias,
    classToString, superClassString,
    a_map = Ember.ArrayPolyfills.map,
    a_indexOf = Ember.ArrayPolyfills.indexOf,
    a_forEach = Ember.ArrayPolyfills.forEach,
    a_slice = [].slice,
    EMPTY_META = {}, // dummy for non-writable meta
    META_SKIP = { __emberproto__: true, __ember_count__: true },
    o_create = Ember.create,
    defineProperty = Ember.defineProperty,
    guidFor = Ember.guidFor;

function mixinsMeta(obj) {
  var m = Ember.meta(obj, true), ret = m.mixins;
  if (!ret) {
    ret = m.mixins = { __emberproto__: obj };
  } else if (ret.__emberproto__ !== obj) {
    ret = m.mixins = o_create(ret);
    ret.__emberproto__ = obj;
  }
  return ret;
}

function initMixin(mixin, args) {
  if (args && args.length > 0) {
    mixin.mixins = a_map.call(args, function(x) {
      if (x instanceof Mixin) { return x; }

      // Note: Manually setup a primitive mixin here.  This is the only
      // way to actually get a primitive mixin.  This way normal creation
      // of mixins will give you combined mixins...
      var mixin = new Mixin();
      mixin.properties = x;
      return mixin;
    });
  }
  return mixin;
}

function isMethod(obj) {
  return 'function' === typeof obj &&
         obj.isMethod !== false &&
         obj !== Boolean && obj !== Object && obj !== Number && obj !== Array && obj !== Date && obj !== String;
}

function mergeMixins(mixins, m, descs, values, base) {
  var len = mixins.length, idx, mixin, guid, props, value, key, ovalue, concats;

  function removeKeys(keyName) {
    delete descs[keyName];
    delete values[keyName];
  }

  for(idx=0; idx < len; idx++) {
    mixin = mixins[idx];
    Ember.assert('Expected hash or Mixin instance, got ' + Object.prototype.toString.call(mixin), typeof mixin === 'object' && mixin !== null && Object.prototype.toString.call(mixin) !== '[object Array]');

    if (mixin instanceof Mixin) {
      guid = guidFor(mixin);
      if (m[guid]) { continue; }
      m[guid] = mixin;
      props = mixin.properties;
    } else {
      props = mixin; // apply anonymous mixin properties
    }

    if (props) {
      // reset before adding each new mixin to pickup concats from previous
      concats = values.concatenatedProperties || base.concatenatedProperties;
      if (props.concatenatedProperties) {
        concats = concats ? concats.concat(props.concatenatedProperties) : props.concatenatedProperties;
      }

      for (key in props) {
        if (!props.hasOwnProperty(key)) { continue; }
        value = props[key];
        if (value instanceof Ember.Descriptor) {
          if (value === REQUIRED && descs[key]) { continue; }

          descs[key]  = value;
          values[key] = undefined;
        } else {
          // impl super if needed...
          if (isMethod(value)) {
            ovalue = descs[key] === undefined && values[key];
            if (!ovalue) { ovalue = base[key]; }
            if ('function' !== typeof ovalue) { ovalue = null; }
            if (ovalue) {
              var o = value.__ember_observes__, ob = value.__ember_observesBefore__;
              value = Ember.wrap(value, ovalue);
              value.__ember_observes__ = o;
              value.__ember_observesBefore__ = ob;
            }
          } else if ((concats && a_indexOf.call(concats, key) >= 0) || key === 'concatenatedProperties') {
            var baseValue = values[key] || base[key];
            if (baseValue) {
              if ('function' === typeof baseValue.concat) {
                value = baseValue.concat(value);
              } else {
                value = Ember.makeArray(baseValue).concat(value);
              }
            } else {
              value = Ember.makeArray(value);
            }
          }

          descs[key] = undefined;
          values[key] = value;
        }
      }

      // manually copy toString() because some JS engines do not enumerate it
      if (props.hasOwnProperty('toString')) {
        base.toString = props.toString;
      }

    } else if (mixin.mixins) {
      mergeMixins(mixin.mixins, m, descs, values, base);
      if (mixin._without) { a_forEach.call(mixin._without, removeKeys); }
    }
  }
}

function writableReq(obj) {
  var m = Ember.meta(obj), req = m.required;
  if (!req || req.__emberproto__ !== obj) {
    req = m.required = req ? o_create(req) : { __ember_count__: 0 };
    req.__emberproto__ = obj;
  }
  return req;
}

var IS_BINDING = Ember.IS_BINDING = /^.+Binding$/;

function detectBinding(obj, key, value, m) {
  if (IS_BINDING.test(key)) {
    var bindings = m.bindings;
    if (!bindings) {
      bindings = m.bindings = { __emberproto__: obj };
    } else if (bindings.__emberproto__ !== obj) {
      bindings = m.bindings = o_create(m.bindings);
      bindings.__emberproto__ = obj;
    }
    bindings[key] = value;
  }
}

function connectBindings(obj, m) {
  // TODO Mixin.apply(instance) should disconnect binding if exists
  var bindings = m.bindings, key, binding, to;
  if (bindings) {
    for (key in bindings) {
      binding = key !== '__emberproto__' && bindings[key];
      if (binding) {
        to = key.slice(0, -7); // strip Binding off end
        if (binding instanceof Ember.Binding) {
          binding = binding.copy(); // copy prototypes' instance
          binding.to(to);
        } else { // binding is string path
          binding = new Ember.Binding(to, binding);
        }
        binding.connect(obj);
        obj[key] = binding;
      }
    }
    // mark as applied
    m.bindings = { __emberproto__: obj };
  }
}

function finishPartial(obj, m) {
  connectBindings(obj, m || Ember.meta(obj));
  return obj;
}

function applyMixin(obj, mixins, partial) {
  var descs = {}, values = {}, m = Ember.meta(obj), req = m.required,
      key, value, desc, prevValue, paths, len, idx;

  // Go through all mixins and hashes passed in, and:
  //
  // * Handle concatenated properties
  // * Set up _super wrapping if necessary
  // * Set up computed property descriptors
  // * Copying `toString` in broken browsers
  mergeMixins(mixins, mixinsMeta(obj), descs, values, obj);

  for(key in values) {
    if (key === 'contructor') { continue; }
    if (!values.hasOwnProperty(key)) { continue; }

    desc = descs[key];
    value = values[key];

    if (desc === REQUIRED) {
      if (!(key in obj)) {
        Ember.assert('Required property not defined: '+key, !!partial);

        // for partial applies add to hash of required keys
        req = writableReq(obj);
        req.__ember_count__++;
        req[key] = true;
      }
    } else {
      while (desc && desc instanceof Alias) {
        var altKey = desc.methodName;
        if (descs[altKey] || values[altKey]) {
          value = values[altKey];
          desc  = descs[altKey];
        } else if (m.descs[altKey]) {
          desc  = m.descs[altKey];
          value = undefined;
        } else {
          desc = undefined;
          value = obj[altKey];
        }
      }

      if (desc === undefined && value === undefined) { continue; }

      prevValue = obj[key];

      if ('function' === typeof prevValue) {
        if ((paths = prevValue.__ember_observesBefore__)) {
          len = paths.length;
          for (idx=0; idx < len; idx++) {
            Ember.removeBeforeObserver(obj, paths[idx], null, key);
          }
        } else if ((paths = prevValue.__ember_observes__)) {
          len = paths.length;
          for (idx=0; idx < len; idx++) {
            Ember.removeObserver(obj, paths[idx], null, key);
          }
        }
      }

      detectBinding(obj, key, value, m);

      defineProperty(obj, key, desc, value, m);

      if ('function' === typeof value) {
        if (paths = value.__ember_observesBefore__) {
          len = paths.length;
          for (idx=0; idx < len; idx++) {
            Ember.addBeforeObserver(obj, paths[idx], null, key);
          }
        } else if (paths = value.__ember_observes__) {
          len = paths.length;
          for (idx=0; idx < len; idx++) {
            Ember.addObserver(obj, paths[idx], null, key);
          }
        }
      }

      if (req && req[key]) {
        req = writableReq(obj);
        req.__ember_count__--;
        req[key] = false;
      }
    }
  }

  if (!partial) { // don't apply to prototype
    finishPartial(obj, m);
  }

  // Make sure no required attrs remain
  if (!partial && req && req.__ember_count__>0) {
    var keys = [];
    for (key in req) {
      if (META_SKIP[key]) { continue; }
      keys.push(key);
    }
    // TODO: Remove surrounding if clause from production build
    Ember.assert('Required properties not defined: '+keys.join(','));
  }
  return obj;
}

/**
  @method mixin
  @for Ember
  @param obj
  @param mixins*
  @return obj
*/
Ember.mixin = function(obj) {
  var args = a_slice.call(arguments, 1);
  applyMixin(obj, args, false);
  return obj;
};

/**
  The `Ember.Mixin` class allows you to create mixins, whose properties can be
  added to other classes. For instance,

      App.Editable = Ember.Mixin.create({
        edit: function() {
          console.log('starting to edit');
          this.set('isEditing', true);
        },
        isEditing: false
      });

      // Mix mixins into classes by passing them as the first arguments to
      // .extend or .create.
      App.CommentView = Ember.View.extend(App.Editable, {
        template: Ember.Handlebars.compile('{{#if isEditing}}...{{else}}...{{/if}}')
      });

      commentView = App.CommentView.create();
      commentView.edit(); // => outputs 'starting to edit'

  Note that Mixins are created with `Ember.Mixin.create`, not
  `Ember.Mixin.extend`.

  @class Mixin
  @namespace Ember
*/
Ember.Mixin = function() { return initMixin(this, arguments); };

Mixin = Ember.Mixin;

Mixin._apply = applyMixin;

Mixin.applyPartial = function(obj) {
  var args = a_slice.call(arguments, 1);
  return applyMixin(obj, args, true);
};

Mixin.finishPartial = finishPartial;

/**
  @method create
  @static
  @param arguments*
*/
Mixin.create = function() {
  classToString.processed = false;
  var M = this;
  return initMixin(new M(), arguments);
};

var MixinPrototype = Mixin.prototype;

/**
  @method reopen
  @param arguments*
*/
MixinPrototype.reopen = function() {
  var mixin, tmp;

  if (this.properties) {
    mixin = Mixin.create();
    mixin.properties = this.properties;
    delete this.properties;
    this.mixins = [mixin];
  } else if (!this.mixins) {
    this.mixins = [];
  }

  var len = arguments.length, mixins = this.mixins, idx;

  for(idx=0; idx < len; idx++) {
    mixin = arguments[idx];
    Ember.assert('Expected hash or Mixin instance, got ' + Object.prototype.toString.call(mixin), typeof mixin === 'object' && mixin !== null && Object.prototype.toString.call(mixin) !== '[object Array]');

    if (mixin instanceof Mixin) {
      mixins.push(mixin);
    } else {
      tmp = Mixin.create();
      tmp.properties = mixin;
      mixins.push(tmp);
    }
  }

  return this;
};

/**
  @method apply
  @param obj
  @return applied object
*/
MixinPrototype.apply = function(obj) {
  return applyMixin(obj, [this], false);
};

MixinPrototype.applyPartial = function(obj) {
  return applyMixin(obj, [this], true);
};

function _detect(curMixin, targetMixin, seen) {
  var guid = guidFor(curMixin);

  if (seen[guid]) { return false; }
  seen[guid] = true;

  if (curMixin === targetMixin) { return true; }
  var mixins = curMixin.mixins, loc = mixins ? mixins.length : 0;
  while (--loc >= 0) {
    if (_detect(mixins[loc], targetMixin, seen)) { return true; }
  }
  return false;
}

/**
  @method detect
  @param obj
  @return {Boolean}
*/
MixinPrototype.detect = function(obj) {
  if (!obj) { return false; }
  if (obj instanceof Mixin) { return _detect(obj, this, {}); }
  var mixins = Ember.meta(obj, false).mixins;
  if (mixins) {
    return !!mixins[guidFor(this)];
  }
  return false;
};

MixinPrototype.without = function() {
  var ret = new Mixin(this);
  ret._without = a_slice.call(arguments);
  return ret;
};

function _keys(ret, mixin, seen) {
  if (seen[guidFor(mixin)]) { return; }
  seen[guidFor(mixin)] = true;

  if (mixin.properties) {
    var props = mixin.properties;
    for (var key in props) {
      if (props.hasOwnProperty(key)) { ret[key] = true; }
    }
  } else if (mixin.mixins) {
    a_forEach.call(mixin.mixins, function(x) { _keys(ret, x, seen); });
  }
}

MixinPrototype.keys = function() {
  var keys = {}, seen = {}, ret = [];
  _keys(keys, this, seen);
  for(var key in keys) {
    if (keys.hasOwnProperty(key)) { ret.push(key); }
  }
  return ret;
};

/* make Mixins have nice displayNames */

var NAME_KEY = Ember.GUID_KEY+'_name';
var get = Ember.get;

function processNames(paths, root, seen) {
  var idx = paths.length;
  for(var key in root) {
    if (!root.hasOwnProperty || !root.hasOwnProperty(key)) { continue; }
    var obj = root[key];
    paths[idx] = key;

    if (obj && obj.toString === classToString) {
      obj[NAME_KEY] = paths.join('.');
    } else if (obj && get(obj, 'isNamespace')) {
      if (seen[guidFor(obj)]) { continue; }
      seen[guidFor(obj)] = true;
      processNames(paths, obj, seen);
    }
  }
  paths.length = idx; // cut out last item
}

function findNamespaces() {
  var Namespace = Ember.Namespace, lookup = Ember.lookup, obj, isNamespace;

  if (Namespace.PROCESSED) { return; }

  for (var prop in lookup) {
    //  get(window.globalStorage, 'isNamespace') would try to read the storage for domain isNamespace and cause exception in Firefox.
    // globalStorage is a storage obsoleted by the WhatWG storage specification. See https://developer.mozilla.org/en/DOM/Storage#globalStorage
    if (prop === "globalStorage" && lookup.StorageList && lookup.globalStorage instanceof lookup.StorageList) { continue; }
    // Unfortunately, some versions of IE don't support window.hasOwnProperty
    if (lookup.hasOwnProperty && !lookup.hasOwnProperty(prop)) { continue; }

    // At times we are not allowed to access certain properties for security reasons.
    // There are also times where even if we can access them, we are not allowed to access their properties.
    try {
      obj = Ember.lookup[prop];
      isNamespace = obj && get(obj, 'isNamespace');
    } catch (e) {
      continue;
    }

    if (isNamespace) {
      Ember.deprecate("Namespaces should not begin with lowercase.", /^[A-Z]/.test(prop));
      obj[NAME_KEY] = prop;
    }
  }
}

/**
  @private
  @method identifyNamespaces
  @for Ember
*/
Ember.identifyNamespaces = findNamespaces;

superClassString = function(mixin) {
  var superclass = mixin.superclass;
  if (superclass) {
    if (superclass[NAME_KEY]) { return superclass[NAME_KEY]; }
    else { return superClassString(superclass); }
  } else {
    return;
  }
};

classToString = function() {
  var Namespace = Ember.Namespace, namespace;

  // TODO: Namespace should really be in Metal
  if (Namespace) {
    if (!this[NAME_KEY] && !classToString.processed) {
      if (!Namespace.PROCESSED) {
        findNamespaces();
        Namespace.PROCESSED = true;
      }

      classToString.processed = true;

      var namespaces = Namespace.NAMESPACES;
      for (var i=0, l=namespaces.length; i<l; i++) {
        namespace = namespaces[i];
        processNames([namespace.toString()], namespace, {});
      }
    }
  }

  if (this[NAME_KEY]) {
    return this[NAME_KEY];
  } else {
    var str = superClassString(this);
    if (str) {
      return "(subclass of " + str + ")";
    } else {
      return "(unknown mixin)";
    }
  }
};

MixinPrototype.toString = classToString;

// returns the mixins currently applied to the specified object
// TODO: Make Ember.mixin
Mixin.mixins = function(obj) {
  var ret = [], mixins = Ember.meta(obj, false).mixins, key, mixin;
  if (mixins) {
    for(key in mixins) {
      if (META_SKIP[key]) { continue; }
      mixin = mixins[key];

      // skip primitive mixins since these are always anonymous
      if (!mixin.properties) { ret.push(mixins[key]); }
    }
  }
  return ret;
};

REQUIRED = new Ember.Descriptor();
REQUIRED.toString = function() { return '(Required Property)'; };

/**
  Denotes a required property for a mixin

  @method required
  @for Ember
*/
Ember.required = function() {
  return REQUIRED;
};

Alias = function(methodName) {
  this.methodName = methodName;
};
Alias.prototype = new Ember.Descriptor();

/**
  Makes a property or method available via an additional name.

      App.PaintSample = Ember.Object.extend({
        color: 'red',
        colour: Ember.alias('color'),
        name: function(){
          return "Zed";
        },
        moniker: Ember.alias("name")
      });
      var paintSample = App.PaintSample.create()
      paintSample.get('colour'); //=> 'red'
      paintSample.moniker(); //=> 'Zed'

  @method alias
  @for Ember
  @param {String} methodName name of the method or property to alias
  @return {Ember.Descriptor}
*/
Ember.alias = function(methodName) {
  return new Alias(methodName);
};

// ..........................................................
// OBSERVER HELPER
//

/**
  @method observer
  @for Ember
  @param {Function} func
  @param {String} propertyNames*
  @return func
*/
Ember.observer = function(func) {
  var paths = a_slice.call(arguments, 1);
  func.__ember_observes__ = paths;
  return func;
};

// If observers ever become asynchronous, Ember.immediateObserver
// must remain synchronous.
/**
  @method immediateObserver
  @for Ember
  @param {Function} func
  @param {String} propertyNames*
  @return func
*/
Ember.immediateObserver = function() {
  for (var i=0, l=arguments.length; i<l; i++) {
    var arg = arguments[i];
    Ember.assert("Immediate observers must observe internal properties only, not properties on other objects.", typeof arg !== "string" || arg.indexOf('.') === -1);
  }

  return Ember.observer.apply(this, arguments);
};

/**
  @method beforeObserver
  @for Ember
  @param {Function} func
  @param {String} propertyNames*
  @return func
*/
Ember.beforeObserver = function(func) {
  var paths = a_slice.call(arguments, 1);
  func.__ember_observesBefore__ = paths;
  return func;
};

})();



(function() {
/**
Ember Metal

@module ember
@submodule ember-metal
*/

})();

(function() {
(function(exports) { "use strict";

var browserGlobal = (typeof window !== 'undefined') ? window : {};

var MutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
var async;

if (typeof process !== 'undefined') {
  async = function(callback, binding) {
    process.nextTick(function() {
      callback.call(binding);
    });
  };
} else if (MutationObserver) {
  var queue = [];

  var observer = new MutationObserver(function() {
    var toProcess = queue.slice();
    queue = [];

    toProcess.forEach(function(tuple) {
      var callback = tuple[0], binding = tuple[1];
      callback.call(binding);
    });
  });

  var element = document.createElement('div');
  observer.observe(element, { attributes: true });

  async = function(callback, binding) {
    queue.push([callback, binding]);
    element.setAttribute('drainQueue', 'drainQueue');
  };
} else {
  async = function(callback, binding) {
    setTimeout(function() {
      callback.call(binding);
    }, 1);
  };
}

exports.async = async;

var Event = exports.Event = function(type, options) {
  this.type = type;

  for (var option in options) {
    if (!options.hasOwnProperty(option)) { continue; }

    this[option] = options[option];
  }
};

var indexOf = function(callbacks, callback) {
  for (var i=0, l=callbacks.length; i<l; i++) {
    if (callbacks[i][0] === callback) { return i; }
  }

  return -1;
};

var callbacksFor = function(object) {
  var callbacks = object._promiseCallbacks;

  if (!callbacks) {
    callbacks = object._promiseCallbacks = {};
  }

  return callbacks;
};

var EventTarget = exports.EventTarget = {
  mixin: function(object) {
    object.on = this.on;
    object.off = this.off;
    object.trigger = this.trigger;
    return object;
  },

  on: function(eventName, callback, binding) {
    var allCallbacks = callbacksFor(this), callbacks;
    binding = binding || this;

    callbacks = allCallbacks[eventName];

    if (!callbacks) {
      callbacks = allCallbacks[eventName] = [];
    }

    if (indexOf(callbacks, callback) === -1) {
      callbacks.push([callback, binding]);
    }
  },

  off: function(eventName, callback) {
    var allCallbacks = callbacksFor(this), callbacks;

    if (!callback) {
      allCallbacks[eventName] = [];
      return;
    }

    callbacks = allCallbacks[eventName];

    var index = indexOf(callbacks, callback);

    if (index !== -1) { callbacks.splice(index, 1); }
  },

  trigger: function(eventName, options) {
    var allCallbacks = callbacksFor(this),
        callbacks, callbackTuple, callback, binding, event;

    if (callbacks = allCallbacks[eventName]) {
      for (var i=0, l=callbacks.length; i<l; i++) {
        callbackTuple = callbacks[i];
        callback = callbackTuple[0];
        binding = callbackTuple[1];

        if (typeof options !== 'object') {
          options = { detail: options };
        }

        event = new Event(eventName, options);
        callback.call(binding, event);
      }
    }
  }
};

var Promise = exports.Promise = function() {
  this.on('promise:resolved', function(event) {
    this.trigger('success', { detail: event.detail });
  }, this);

  this.on('promise:failed', function(event) {
    this.trigger('error', { detail: event.detail });
  }, this);
};

var noop = function() {};

var invokeCallback = function(type, promise, callback, event) {
  var value, error;

  if (callback) {
    try {
      value = callback(event.detail);
    } catch(e) {
      error = e;
    }
  } else {
    value = event.detail;
  }

  if (value instanceof Promise) {
    value.then(function(value) {
      promise.resolve(value);
    }, function(error) {
      promise.reject(error);
    });
  } else if (callback && value) {
    promise.resolve(value);
  } else if (error) {
    promise.reject(error);
  } else {
    promise[type](value);
  }
};

Promise.prototype = {
  then: function(done, fail) {
    var thenPromise = new Promise();

    this.on('promise:resolved', function(event) {
      invokeCallback('resolve', thenPromise, done, event);
    });

    this.on('promise:failed', function(event) {
      invokeCallback('reject', thenPromise, fail, event);
    });

    return thenPromise;
  },

  resolve: function(value) {
    exports.async(function() {
      this.trigger('promise:resolved', { detail: value });
      this.isResolved = value;
    }, this);

    this.resolve = noop;
    this.reject = noop;
  },

  reject: function(value) {
    exports.async(function() {
      this.trigger('promise:failed', { detail: value });
      this.isRejected = value;
    }, this);

    this.resolve = noop;
    this.reject = noop;
  }
};

EventTarget.mixin(Promise.prototype);
 })(window.RSVP = {});

})();

(function() {
/*globals ENV */
/**
@module ember
@submodule ember-runtime
*/

var indexOf = Ember.EnumerableUtils.indexOf;

// ........................................
// TYPING & ARRAY MESSAGING
//

var TYPE_MAP = {};
var t = "Boolean Number String Function Array Date RegExp Object".split(" ");
Ember.ArrayPolyfills.forEach.call(t, function(name) {
  TYPE_MAP[ "[object " + name + "]" ] = name.toLowerCase();
});

var toString = Object.prototype.toString;

/**
  Returns a consistent type for the passed item.

  Use this instead of the built-in `typeof` to get the type of an item.
  It will return the same result across all browsers and includes a bit
  more detail.  Here is what will be returned:

      | Return Value  | Meaning                                              |
      |---------------|------------------------------------------------------|
      | 'string'      | String primitive                                     |
      | 'number'      | Number primitive                                     |
      | 'boolean'     | Boolean primitive                                    |
      | 'null'        | Null value                                           |
      | 'undefined'   | Undefined value                                      |
      | 'function'    | A function                                           |
      | 'array'       | An instance of Array                                 |
      | 'class'       | A Ember class (created using Ember.Object.extend())  |
      | 'instance'    | A Ember object instance                              |
      | 'error'       | An instance of the Error object                      |
      | 'object'      | A JavaScript object not inheriting from Ember.Object |

  Examples:

      Ember.typeOf();                      => 'undefined'
      Ember.typeOf(null);                  => 'null'
      Ember.typeOf(undefined);             => 'undefined'
      Ember.typeOf('michael');             => 'string'
      Ember.typeOf(101);                   => 'number'
      Ember.typeOf(true);                  => 'boolean'
      Ember.typeOf(Ember.makeArray);       => 'function'
      Ember.typeOf([1,2,90]);              => 'array'
      Ember.typeOf(Ember.Object.extend()); => 'class'
      Ember.typeOf(Ember.Object.create()); => 'instance'
      Ember.typeOf(new Error('teamocil')); => 'error'

      // "normal" JavaScript object
      Ember.typeOf({a: 'b'});              => 'object'

  @method typeOf
  @for Ember
  @param item {Object} the item to check
  @return {String} the type
*/
Ember.typeOf = function(item) {
  var ret;

  ret = (item === null || item === undefined) ? String(item) : TYPE_MAP[toString.call(item)] || 'object';

  if (ret === 'function') {
    if (Ember.Object && Ember.Object.detect(item)) ret = 'class';
  } else if (ret === 'object') {
    if (item instanceof Error) ret = 'error';
    else if (Ember.Object && item instanceof Ember.Object) ret = 'instance';
    else ret = 'object';
  }

  return ret;
};

/**
  Returns true if the passed value is null or undefined.  This avoids errors
  from JSLint complaining about use of ==, which can be technically
  confusing.

      Ember.none();             => true
      Ember.none(null);         => true
      Ember.none(undefined);    => true
      Ember.none('');           => false
      Ember.none([]);           => false
      Ember.none(function(){}); => false

  @method none
  @for Ember
  @param {Object} obj Value to test
  @return {Boolean}
*/
Ember.none = function(obj) {
  return obj === null || obj === undefined;
};

/**
  Verifies that a value is null or an empty string | array | function.

  Constrains the rules on `Ember.none` by returning false for empty
  string and empty arrays.

      Ember.empty();               => true
      Ember.empty(null);           => true
      Ember.empty(undefined);      => true
      Ember.empty('');             => true
      Ember.empty([]);             => true
      Ember.empty('tobias fünke'); => false
      Ember.empty([0,1,2]);        => false

  @method empty
  @for Ember
  @param {Object} obj Value to test
  @return {Boolean}
*/
Ember.empty = function(obj) {
  return obj === null || obj === undefined || (obj.length === 0 && typeof obj !== 'function') || (typeof obj === 'object' && Ember.get(obj, 'length') === 0);
};

/**
 This will compare two javascript values of possibly different types.
 It will tell you which one is greater than the other by returning:

  - -1 if the first is smaller than the second,
  - 0 if both are equal,
  - 1 if the first is greater than the second.

 The order is calculated based on Ember.ORDER_DEFINITION, if types are different.
 In case they have the same type an appropriate comparison for this type is made.

    Ember.compare('hello', 'hello');  => 0
    Ember.compare('abc', 'dfg');      => -1
    Ember.compare(2, 1);              => 1

 @method compare
 @for Ember
 @param {Object} v First value to compare
 @param {Object} w Second value to compare
 @return {Number} -1 if v < w, 0 if v = w and 1 if v > w.
*/
Ember.compare = function compare(v, w) {
  if (v === w) { return 0; }

  var type1 = Ember.typeOf(v);
  var type2 = Ember.typeOf(w);

  var Comparable = Ember.Comparable;
  if (Comparable) {
    if (type1==='instance' && Comparable.detect(v.constructor)) {
      return v.constructor.compare(v, w);
    }

    if (type2 === 'instance' && Comparable.detect(w.constructor)) {
      return 1-w.constructor.compare(w, v);
    }
  }

  // If we haven't yet generated a reverse-mapping of Ember.ORDER_DEFINITION,
  // do so now.
  var mapping = Ember.ORDER_DEFINITION_MAPPING;
  if (!mapping) {
    var order = Ember.ORDER_DEFINITION;
    mapping = Ember.ORDER_DEFINITION_MAPPING = {};
    var idx, len;
    for (idx = 0, len = order.length; idx < len;  ++idx) {
      mapping[order[idx]] = idx;
    }

    // We no longer need Ember.ORDER_DEFINITION.
    delete Ember.ORDER_DEFINITION;
  }

  var type1Index = mapping[type1];
  var type2Index = mapping[type2];

  if (type1Index < type2Index) { return -1; }
  if (type1Index > type2Index) { return 1; }

  // types are equal - so we have to check values now
  switch (type1) {
    case 'boolean':
    case 'number':
      if (v < w) { return -1; }
      if (v > w) { return 1; }
      return 0;

    case 'string':
      var comp = v.localeCompare(w);
      if (comp < 0) { return -1; }
      if (comp > 0) { return 1; }
      return 0;

    case 'array':
      var vLen = v.length;
      var wLen = w.length;
      var l = Math.min(vLen, wLen);
      var r = 0;
      var i = 0;
      while (r === 0 && i < l) {
        r = compare(v[i],w[i]);
        i++;
      }
      if (r !== 0) { return r; }

      // all elements are equal now
      // shorter array should be ordered first
      if (vLen < wLen) { return -1; }
      if (vLen > wLen) { return 1; }
      // arrays are equal now
      return 0;

    case 'instance':
      if (Ember.Comparable && Ember.Comparable.detect(v)) {
        return v.compare(v, w);
      }
      return 0;

    case 'date':
      var vNum = v.getTime();
      var wNum = w.getTime();
      if (vNum < wNum) { return -1; }
      if (vNum > wNum) { return 1; }
      return 0;

    default:
      return 0;
  }
};

function _copy(obj, deep, seen, copies) {
  var ret, loc, key;

  // primitive data types are immutable, just return them.
  if ('object' !== typeof obj || obj===null) return obj;

  // avoid cyclical loops
  if (deep && (loc=indexOf(seen, obj))>=0) return copies[loc];

  Ember.assert('Cannot clone an Ember.Object that does not implement Ember.Copyable', !(obj instanceof Ember.Object) || (Ember.Copyable && Ember.Copyable.detect(obj)));

  // IMPORTANT: this specific test will detect a native array only.  Any other
  // object will need to implement Copyable.
  if (Ember.typeOf(obj) === 'array') {
    ret = obj.slice();
    if (deep) {
      loc = ret.length;
      while(--loc>=0) ret[loc] = _copy(ret[loc], deep, seen, copies);
    }
  } else if (Ember.Copyable && Ember.Copyable.detect(obj)) {
    ret = obj.copy(deep, seen, copies);
  } else {
    ret = {};
    for(key in obj) {
      if (!obj.hasOwnProperty(key)) continue;
      ret[key] = deep ? _copy(obj[key], deep, seen, copies) : obj[key];
    }
  }

  if (deep) {
    seen.push(obj);
    copies.push(ret);
  }

  return ret;
}

/**
  Creates a clone of the passed object. This function can take just about
  any type of object and create a clone of it, including primitive values
  (which are not actually cloned because they are immutable).

  If the passed object implements the clone() method, then this function
  will simply call that method and return the result.

  @method copy
  @for Ember
  @param {Object} object The object to clone
  @param {Boolean} deep If true, a deep copy of the object is made
  @return {Object} The cloned object
*/
Ember.copy = function(obj, deep) {
  // fast paths
  if ('object' !== typeof obj || obj===null) return obj; // can't copy primitives
  if (Ember.Copyable && Ember.Copyable.detect(obj)) return obj.copy(deep);
  return _copy(obj, deep, deep ? [] : null, deep ? [] : null);
};

/**
  Convenience method to inspect an object. This method will attempt to
  convert the object into a useful string description.

  @method inspect
  @for Ember
  @param {Object} obj The object you want to inspect.
  @return {String} A description of the object
*/
Ember.inspect = function(obj) {
  var v, ret = [];
  for(var key in obj) {
    if (obj.hasOwnProperty(key)) {
      v = obj[key];
      if (v === 'toString') { continue; } // ignore useless items
      if (Ember.typeOf(v) === 'function') { v = "function() { ... }"; }
      ret.push(key + ": " + v);
    }
  }
  return "{" + ret.join(" , ") + "}";
};

/**
  Compares two objects, returning true if they are logically equal.  This is
  a deeper comparison than a simple triple equal. For sets it will compare the
  internal objects.  For any other object that implements `isEqual()` it will 
  respect that method.

      Ember.isEqual('hello', 'hello');  => true
      Ember.isEqual(1, 2);              => false
      Ember.isEqual([4,2], [4,2]);      => false

  @method isEqual
  @for Ember
  @param {Object} a first object to compare
  @param {Object} b second object to compare
  @return {Boolean}
*/
Ember.isEqual = function(a, b) {
  if (a && 'function'===typeof a.isEqual) return a.isEqual(b);
  return a === b;
};

// Used by Ember.compare
Ember.ORDER_DEFINITION = Ember.ENV.ORDER_DEFINITION || [
  'undefined',
  'null',
  'boolean',
  'number',
  'string',
  'array',
  'object',
  'instance',
  'function',
  'class',
  'date'
];

/**
  Returns all of the keys defined on an object or hash. This is useful
  when inspecting objects for debugging.  On browsers that support it, this
  uses the native Object.keys implementation.

  @method keys
  @for Ember
  @param {Object} obj
  @return {Array} Array containing keys of obj
*/
Ember.keys = Object.keys;

if (!Ember.keys) {
  Ember.keys = function(obj) {
    var ret = [];
    for(var key in obj) {
      if (obj.hasOwnProperty(key)) { ret.push(key); }
    }
    return ret;
  };
}

// ..........................................................
// ERROR
//

var errorProps = ['description', 'fileName', 'lineNumber', 'message', 'name', 'number', 'stack'];

/**
  A subclass of the JavaScript Error object for use in Ember.

  @class Error
  @namespace Ember
  @extends Error
  @constructor
*/
Ember.Error = function() {
  var tmp = Error.prototype.constructor.apply(this, arguments);

  // Unfortunately errors are not enumerable in Chrome (at least), so `for prop in tmp` doesn't work.
  for (var idx = 0; idx < errorProps.length; idx++) {
    this[errorProps[idx]] = tmp[errorProps[idx]];
  }
};

Ember.Error.prototype = Ember.create(Error.prototype);

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var STRING_DASHERIZE_REGEXP = (/[ _]/g);
var STRING_DASHERIZE_CACHE = {};
var STRING_DECAMELIZE_REGEXP = (/([a-z])([A-Z])/g);
var STRING_CAMELIZE_REGEXP = (/(\-|_|\s)+(.)?/g);
var STRING_UNDERSCORE_REGEXP_1 = (/([a-z\d])([A-Z]+)/g);
var STRING_UNDERSCORE_REGEXP_2 = (/\-|\s+/g);

/**
  Defines the hash of localized strings for the current language.  Used by
  the `Ember.String.loc()` helper.  To localize, add string values to this
  hash.

  @property STRINGS
  @for Ember
  @type Hash
*/
Ember.STRINGS = {};

/**
  Defines string helper methods including string formatting and localization.
  Unless Ember.EXTEND_PROTOTYPES.String is false these methods will also be added
  to the String.prototype as well.

  @class String
  @namespace Ember
  @static
*/
Ember.String = {

  /**
    Apply formatting options to the string.  This will look for occurrences
    of %@ in your string and substitute them with the arguments you pass into
    this method.  If you want to control the specific order of replacement,
    you can add a number after the key as well to indicate which argument
    you want to insert.

    Ordered insertions are most useful when building loc strings where values
    you need to insert may appear in different orders.

        "Hello %@ %@".fmt('John', 'Doe') => "Hello John Doe"
        "Hello %@2, %@1".fmt('John', 'Doe') => "Hello Doe, John"

    @method fmt
    @param {Object...} [args]
    @return {String} formatted string
  */
  fmt: function(str, formats) {
    // first, replace any ORDERED replacements.
    var idx  = 0; // the current index for non-numerical replacements
    return str.replace(/%@([0-9]+)?/g, function(s, argIndex) {
      argIndex = (argIndex) ? parseInt(argIndex,0) - 1 : idx++ ;
      s = formats[argIndex];
      return ((s === null) ? '(null)' : (s === undefined) ? '' : s).toString();
    }) ;
  },

  /**
    Formats the passed string, but first looks up the string in the localized
    strings hash.  This is a convenient way to localize text.  See
    `Ember.String.fmt()` for more information on formatting.

    Note that it is traditional but not required to prefix localized string
    keys with an underscore or other character so you can easily identify
    localized strings.

        Ember.STRINGS = {
          '_Hello World': 'Bonjour le monde',
          '_Hello %@ %@': 'Bonjour %@ %@'
        };

        Ember.String.loc("_Hello World");
        => 'Bonjour le monde';

        Ember.String.loc("_Hello %@ %@", ["John", "Smith"]);
        => "Bonjour John Smith";

    @method loc
    @param {String} str The string to format
    @param {Array} formats Optional array of parameters to interpolate into string.
    @return {String} formatted string
  */
  loc: function(str, formats) {
    str = Ember.STRINGS[str] || str;
    return Ember.String.fmt(str, formats) ;
  },

  /**
    Splits a string into separate units separated by spaces, eliminating any
    empty strings in the process.  This is a convenience method for split that
    is mostly useful when applied to the String.prototype.

        Ember.String.w("alpha beta gamma").forEach(function(key) {
          console.log(key);
        });
        > alpha
        > beta
        > gamma

    @method w
    @param {String} str The string to split
    @return {String} split string
  */
  w: function(str) { return str.split(/\s+/); },

  /**
    Converts a camelized string into all lower case separated by underscores.

        'innerHTML'.decamelize()         => 'inner_html'
        'action_name'.decamelize()       => 'action_name'
        'css-class-name'.decamelize()    => 'css-class-name'
        'my favorite items'.decamelize() => 'my favorite items'

    @method decamelize
    @param {String} str The string to decamelize.
    @return {String} the decamelized string.
  */
  decamelize: function(str) {
    return str.replace(STRING_DECAMELIZE_REGEXP, '$1_$2').toLowerCase();
  },

  /**
    Replaces underscores or spaces with dashes.

        'innerHTML'.dasherize()         => 'inner-html'
        'action_name'.dasherize()       => 'action-name'
        'css-class-name'.dasherize()    => 'css-class-name'
        'my favorite items'.dasherize() => 'my-favorite-items'

    @method dasherize
    @param {String} str The string to dasherize.
    @return {String} the dasherized string.
  */
  dasherize: function(str) {
    var cache = STRING_DASHERIZE_CACHE,
        ret   = cache[str];

    if (ret) {
      return ret;
    } else {
      ret = Ember.String.decamelize(str).replace(STRING_DASHERIZE_REGEXP,'-');
      cache[str] = ret;
    }

    return ret;
  },

  /**
    Returns the lowerCaseCamel form of a string.

        'innerHTML'.camelize()         => 'innerHTML'
        'action_name'.camelize()       => 'actionName'
        'css-class-name'.camelize()    => 'cssClassName'
        'my favorite items'.camelize() => 'myFavoriteItems'

    @method camelize
    @param {String} str The string to camelize.
    @return {String} the camelized string.
  */
  camelize: function(str) {
    return str.replace(STRING_CAMELIZE_REGEXP, function(match, separator, chr) {
      return chr ? chr.toUpperCase() : '';
    });
  },

  /**
    Returns the UpperCamelCase form of a string.

        'innerHTML'.classify()         => 'InnerHTML'
        'action_name'.classify()       => 'ActionName'
        'css-class-name'.classify()    => 'CssClassName'
        'my favorite items'.classify() => 'MyFavoriteItems'

    @method classify
    @param {String} str the string to classify
    @return {String} the classified string
  */
  classify: function(str) {
    var camelized = Ember.String.camelize(str);
    return camelized.charAt(0).toUpperCase() + camelized.substr(1);
  },

  /**
    More general than decamelize. Returns the lower_case_and_underscored
    form of a string.

        'innerHTML'.underscore()         => 'inner_html'
        'action_name'.underscore()       => 'action_name'
        'css-class-name'.underscore()    => 'css_class_name'
        'my favorite items'.underscore() => 'my_favorite_items'

    @property underscore
    @param {String} str The string to underscore.
    @return {String} the underscored string.
  */
  underscore: function(str) {
    return str.replace(STRING_UNDERSCORE_REGEXP_1, '$1_$2').
      replace(STRING_UNDERSCORE_REGEXP_2, '_').toLowerCase();
  }
};

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/



var fmt = Ember.String.fmt,
    w   = Ember.String.w,
    loc = Ember.String.loc,
    camelize = Ember.String.camelize,
    decamelize = Ember.String.decamelize,
    dasherize = Ember.String.dasherize,
    underscore = Ember.String.underscore,
    classify = Ember.String.classify;

if (Ember.EXTEND_PROTOTYPES === true || Ember.EXTEND_PROTOTYPES.String) {

  /**
    See {{#crossLink "Ember.String/fmt"}}{{/crossLink}}

    @method fmt
    @for String
  */
  String.prototype.fmt = function() {
    return fmt(this, arguments);
  };

  /**
    See {{#crossLink "Ember.String/w"}}{{/crossLink}}

    @method w
    @for String
  */
  String.prototype.w = function() {
    return w(this);
  };

  /**
    See {{#crossLink "Ember.String/loc"}}{{/crossLink}}

    @method loc
    @for String
  */
  String.prototype.loc = function() {
    return loc(this, arguments);
  };

  /**
    See {{#crossLink "Ember.String/camelize"}}{{/crossLink}}

    @method camelize
    @for String
  */
  String.prototype.camelize = function() {
    return camelize(this);
  };

  /**
    See {{#crossLink "Ember.String/decamelize"}}{{/crossLink}}

    @method decamelize
    @for String
  */
  String.prototype.decamelize = function() {
    return decamelize(this);
  };

  /**
    See {{#crossLink "Ember.String/dasherize"}}{{/crossLink}}

    @method dasherize
    @for String
  */
  String.prototype.dasherize = function() {
    return dasherize(this);
  };

  /**
    See {{#crossLink "Ember.String/underscore"}}{{/crossLink}}

    @method underscore
    @for String
  */
  String.prototype.underscore = function() {
    return underscore(this);
  };

  /**
    See {{#crossLink "Ember.String/classify"}}{{/crossLink}}

    @method classify
    @for String
  */
  String.prototype.classify = function() {
    return classify(this);
  };
}


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var a_slice = Array.prototype.slice;

if (Ember.EXTEND_PROTOTYPES === true || Ember.EXTEND_PROTOTYPES.Function) {

  /**
    The `property` extension of Javascript's Function prototype is available
    when Ember.EXTEND_PROTOTYPES or Ember.EXTEND_PROTOTYPES.Function is true,
    which is the default.

    Computed properties allow you to treat a function like a property:

        MyApp.president = Ember.Object.create({
          firstName: "Barack",
          lastName: "Obama",

          fullName: function() {
            return this.get('firstName') + ' ' + this.get('lastName');

            // Call this flag to mark the function as a property
          }.property()
        });

        MyApp.president.get('fullName');    => "Barack Obama"

    Treating a function like a property is useful because they can work with
    bindings, just like any other property.

    Many computed properties have dependencies on other properties. For
    example, in the above example, the `fullName` property depends on
    `firstName` and `lastName` to determine its value. You can tell Ember.js
    about these dependencies like this:

        MyApp.president = Ember.Object.create({
          firstName: "Barack",
          lastName: "Obama",

          fullName: function() {
            return this.get('firstName') + ' ' + this.get('lastName');

            // Tell Ember.js that this computed property depends on firstName
            // and lastName
          }.property('firstName', 'lastName')
        });

    Make sure you list these dependencies so Ember.js knows when to update
    bindings that connect to a computed property. Changing a dependency
    will not immediately trigger an update of the computed property, but
    will instead clear the cache so that it is updated when the next `get`
    is called on the property.

    See {{#crossLink "Ember.ComputedProperty"}}{{/crossLink}},
      {{#crossLink "Ember/computed"}}{{/crossLink}}

    @method property
    @for Function
  */
  Function.prototype.property = function() {
    var ret = Ember.computed(this);
    return ret.property.apply(ret, arguments);
  };

  /**
    The `observes` extension of Javascript's Function prototype is available
    when Ember.EXTEND_PROTOTYPES or Ember.EXTEND_PROTOTYPES.Function is true,
    which is the default.

    You can observe property changes simply by adding the `observes`
    call to the end of your method declarations in classes that you write.
    For example:

        Ember.Object.create({
          valueObserver: function() {
            // Executes whenever the "value" property changes
          }.observes('value')
        });

    See {{#crossLink "Ember.Observable/observes"}}{{/crossLink}}

    @method observes
    @for Function
  */
  Function.prototype.observes = function() {
    this.__ember_observes__ = a_slice.call(arguments);
    return this;
  };

  /**
    The `observesBefore` extension of Javascript's Function prototype is available
    when Ember.EXTEND_PROTOTYPES or Ember.EXTEND_PROTOTYPES.Function is true,
    which is the default.

    You can get notified when a property changes is about to happen by
    by adding the `observesBefore` call to the end of your method
    declarations in classes that you write. For example:

        Ember.Object.create({
          valueObserver: function() {
            // Executes whenever the "value" property is about to change
          }.observesBefore('value')
        });

    See {{#crossLink "Ember.Observable/observesBefore"}}{{/crossLink}}

    @method observesBefore
    @for Function
  */
  Function.prototype.observesBefore = function() {
    this.__ember_observesBefore__ = a_slice.call(arguments);
    return this;
  };

}


})();



(function() {

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

// ..........................................................
// HELPERS
//

var get = Ember.get, set = Ember.set;
var a_slice = Array.prototype.slice;
var a_indexOf = Ember.EnumerableUtils.indexOf;

var contexts = [];

function popCtx() {
  return contexts.length===0 ? {} : contexts.pop();
}

function pushCtx(ctx) {
  contexts.push(ctx);
  return null;
}

function iter(key, value) {
  var valueProvided = arguments.length === 2;

  function i(item) {
    var cur = get(item, key);
    return valueProvided ? value===cur : !!cur;
  }
  return i ;
}

/**
  This mixin defines the common interface implemented by enumerable objects
  in Ember.  Most of these methods follow the standard Array iteration
  API defined up to JavaScript 1.8 (excluding language-specific features that
  cannot be emulated in older versions of JavaScript).

  This mixin is applied automatically to the Array class on page load, so you
  can use any of these methods on simple arrays.  If Array already implements
  one of these methods, the mixin will not override them.

  ## Writing Your Own Enumerable

  To make your own custom class enumerable, you need two items:

  1. You must have a length property.  This property should change whenever
     the number of items in your enumerable object changes.  If you using this
     with an Ember.Object subclass, you should be sure to change the length
     property using set().

  2. If you must implement nextObject().  See documentation.

  Once you have these two methods implement, apply the Ember.Enumerable mixin
  to your class and you will be able to enumerate the contents of your object
  like any other collection.

  ## Using Ember Enumeration with Other Libraries

  Many other libraries provide some kind of iterator or enumeration like
  facility.  This is often where the most common API conflicts occur.
  Ember's API is designed to be as friendly as possible with other
  libraries by implementing only methods that mostly correspond to the
  JavaScript 1.8 API.

  @class Enumerable
  @namespace Ember
  @extends Ember.Mixin
  @since Ember 0.9
*/
Ember.Enumerable = Ember.Mixin.create(
  /** @scope Ember.Enumerable.prototype */ {

  // compatibility
  isEnumerable: true,

  /**
    Implement this method to make your class enumerable.

    This method will be call repeatedly during enumeration.  The index value
    will always begin with 0 and increment monotonically.  You don't have to
    rely on the index value to determine what object to return, but you should
    always check the value and start from the beginning when you see the
    requested index is 0.

    The previousObject is the object that was returned from the last call
    to nextObject for the current iteration.  This is a useful way to
    manage iteration if you are tracing a linked list, for example.

    Finally the context parameter will always contain a hash you can use as
    a "scratchpad" to maintain any other state you need in order to iterate
    properly.  The context object is reused and is not reset between
    iterations so make sure you setup the context with a fresh state whenever
    the index parameter is 0.

    Generally iterators will continue to call nextObject until the index
    reaches the your current length-1.  If you run out of data before this
    time for some reason, you should simply return undefined.

    The default implementation of this method simply looks up the index.
    This works great on any Array-like objects.

    @method nextObject
    @param {Number} index the current index of the iteration
    @param {Object} previousObject the value returned by the last call to nextObject.
    @param {Object} context a context object you can use to maintain state.
    @return {Object} the next object in the iteration or undefined
  */
  nextObject: Ember.required(Function),

  /**
    Helper method returns the first object from a collection.  This is usually
    used by bindings and other parts of the framework to extract a single
    object if the enumerable contains only one item.

    If you override this method, you should implement it so that it will
    always return the same value each time it is called.  If your enumerable
    contains only one object, this method should always return that object.
    If your enumerable is empty, this method should return undefined.

        var arr = ["a", "b", "c"];
        arr.firstObject(); => "a"

        var arr = [];
        arr.firstObject(); => undefined

    @property firstObject
    @return {Object} the object or undefined
  */
  firstObject: Ember.computed(function() {
    if (get(this, 'length')===0) return undefined ;

    // handle generic enumerables
    var context = popCtx(), ret;
    ret = this.nextObject(0, null, context);
    pushCtx(context);
    return ret ;
  }).property('[]'),

  /**
    Helper method returns the last object from a collection. If your enumerable
    contains only one object, this method should always return that object.
    If your enumerable is empty, this method should return undefined.

        var arr = ["a", "b", "c"];
        arr.lastObject(); => "c"

        var arr = [];
        arr.lastObject(); => undefined

    @property lastObject
    @return {Object} the last object or undefined
  */
  lastObject: Ember.computed(function() {
    var len = get(this, 'length');
    if (len===0) return undefined ;
    var context = popCtx(), idx=0, cur, last = null;
    do {
      last = cur;
      cur = this.nextObject(idx++, last, context);
    } while (cur !== undefined);
    pushCtx(context);
    return last;
  }).property('[]'),

  /**
    Returns true if the passed object can be found in the receiver.  The
    default version will iterate through the enumerable until the object
    is found.  You may want to override this with a more efficient version.

        var arr = ["a", "b", "c"];
        arr.contains("a"); => true
        arr.contains("z"); => false

    @method contains
    @param {Object} obj The object to search for.
    @return {Boolean} true if object is found in enumerable.
  */
  contains: function(obj) {
    return this.find(function(item) { return item===obj; }) !== undefined;
  },

  /**
    Iterates through the enumerable, calling the passed function on each
    item. This method corresponds to the forEach() method defined in
    JavaScript 1.6.

    The callback method you provide should have the following signature (all
    parameters are optional):

          function(item, index, enumerable);

    - *item* is the current item in the iteration.
    - *index* is the current index in the iteration
    - *enumerable* is the enumerable object itself.

    Note that in addition to a callback, you can also pass an optional target
    object that will be set as "this" on the context. This is a good way
    to give your iterator function access to the current object.

    @method forEach
    @param {Function} callback The callback to execute
    @param {Object} [target] The target object to use
    @return {Object} receiver
  */
  forEach: function(callback, target) {
    if (typeof callback !== "function") throw new TypeError() ;
    var len = get(this, 'length'), last = null, context = popCtx();

    if (target === undefined) target = null;

    for(var idx=0;idx<len;idx++) {
      var next = this.nextObject(idx, last, context) ;
      callback.call(target, next, idx, this);
      last = next ;
    }
    last = null ;
    context = pushCtx(context);
    return this ;
  },

  /**
    Alias for mapProperty

    @method getEach
    @param {String} key name of the property
    @return {Array} The mapped array.
  */
  getEach: function(key) {
    return this.mapProperty(key);
  },

  /**
    Sets the value on the named property for each member. This is more
    efficient than using other methods defined on this helper. If the object
    implements Ember.Observable, the value will be changed to set(), otherwise
    it will be set directly. null objects are skipped.

    @method setEach
    @param {String} key The key to set
    @param {Object} value The object to set
    @return {Object} receiver
  */
  setEach: function(key, value) {
    return this.forEach(function(item) {
      set(item, key, value);
    });
  },

  /**
    Maps all of the items in the enumeration to another value, returning
    a new array. This method corresponds to map() defined in JavaScript 1.6.

    The callback method you provide should have the following signature (all
    parameters are optional):

        function(item, index, enumerable);

    - *item* is the current item in the iteration.
    - *index* is the current index in the iteration
    - *enumerable* is the enumerable object itself.

    It should return the mapped value.

    Note that in addition to a callback, you can also pass an optional target
    object that will be set as "this" on the context. This is a good way
    to give your iterator function access to the current object.

    @method map
    @param {Function} callback The callback to execute
    @param {Object} [target] The target object to use
    @return {Array} The mapped array.
  */
  map: function(callback, target) {
    var ret = [];
    this.forEach(function(x, idx, i) {
      ret[idx] = callback.call(target, x, idx,i);
    });
    return ret ;
  },

  /**
    Similar to map, this specialized function returns the value of the named
    property on all items in the enumeration.

    @method mapProperty
    @param {String} key name of the property
    @return {Array} The mapped array.
  */
  mapProperty: function(key) {
    return this.map(function(next) {
      return get(next, key);
    });
  },

  /**
    Returns an array with all of the items in the enumeration that the passed
    function returns true for. This method corresponds to filter() defined in
    JavaScript 1.6.

    The callback method you provide should have the following signature (all
    parameters are optional):

          function(item, index, enumerable);

    - *item* is the current item in the iteration.
    - *index* is the current index in the iteration
    - *enumerable* is the enumerable object itself.

    It should return the true to include the item in the results, false otherwise.

    Note that in addition to a callback, you can also pass an optional target
    object that will be set as "this" on the context. This is a good way
    to give your iterator function access to the current object.

    @method filter
    @param {Function} callback The callback to execute
    @param {Object} [target] The target object to use
    @return {Array} A filtered array.
  */
  filter: function(callback, target) {
    var ret = [];
    this.forEach(function(x, idx, i) {
      if (callback.call(target, x, idx, i)) ret.push(x);
    });
    return ret ;
  },

  /**
    Returns an array with just the items with the matched property.  You
    can pass an optional second argument with the target value.  Otherwise
    this will match any property that evaluates to true.

    @method filterProperty
    @param {String} key the property to test
    @param {String} [value] optional value to test against.
    @return {Array} filtered array
  */
  filterProperty: function(key, value) {
    return this.filter(iter.apply(this, arguments));
  },

  /**
    Returns the first item in the array for which the callback returns true.
    This method works similar to the filter() method defined in JavaScript 1.6
    except that it will stop working on the array once a match is found.

    The callback method you provide should have the following signature (all
    parameters are optional):

          function(item, index, enumerable);

    - *item* is the current item in the iteration.
    - *index* is the current index in the iteration
    - *enumerable* is the enumerable object itself.

    It should return the true to include the item in the results, false otherwise.

    Note that in addition to a callback, you can also pass an optional target
    object that will be set as "this" on the context. This is a good way
    to give your iterator function access to the current object.

    @method find
    @param {Function} callback The callback to execute
    @param {Object} [target] The target object to use
    @return {Object} Found item or null.
  */
  find: function(callback, target) {
    var len = get(this, 'length') ;
    if (target === undefined) target = null;

    var last = null, next, found = false, ret ;
    var context = popCtx();
    for(var idx=0;idx<len && !found;idx++) {
      next = this.nextObject(idx, last, context) ;
      if (found = callback.call(target, next, idx, this)) ret = next ;
      last = next ;
    }
    next = last = null ;
    context = pushCtx(context);
    return ret ;
  },

  /**
    Returns the first item with a property matching the passed value.  You
    can pass an optional second argument with the target value.  Otherwise
    this will match any property that evaluates to true.

    This method works much like the more generic find() method.

    @method findProperty
    @param {String} key the property to test
    @param {String} [value] optional value to test against.
    @return {Object} found item or null
  */
  findProperty: function(key, value) {
    return this.find(iter.apply(this, arguments));
  },

  /**
    Returns true if the passed function returns true for every item in the
    enumeration. This corresponds with the every() method in JavaScript 1.6.

    The callback method you provide should have the following signature (all
    parameters are optional):

          function(item, index, enumerable);

    - *item* is the current item in the iteration.
    - *index* is the current index in the iteration
    - *enumerable* is the enumerable object itself.

    It should return the true or false.

    Note that in addition to a callback, you can also pass an optional target
    object that will be set as "this" on the context. This is a good way
    to give your iterator function access to the current object.

    Example Usage:

          if (people.every(isEngineer)) { Paychecks.addBigBonus(); }

    @method every
    @param {Function} callback The callback to execute
    @param {Object} [target] The target object to use
    @return {Boolean}
  */
  every: function(callback, target) {
    return !this.find(function(x, idx, i) {
      return !callback.call(target, x, idx, i);
    });
  },

  /**
    Returns true if the passed property resolves to true for all items in the
    enumerable.  This method is often simpler/faster than using a callback.

    @method everyProperty
    @param {String} key the property to test
    @param {String} [value] optional value to test against.
    @return {Array} filtered array
  */
  everyProperty: function(key, value) {
    return this.every(iter.apply(this, arguments));
  },


  /**
    Returns true if the passed function returns true for any item in the
    enumeration. This corresponds with the every() method in JavaScript 1.6.

    The callback method you provide should have the following signature (all
    parameters are optional):

          function(item, index, enumerable);

    - *item* is the current item in the iteration.
    - *index* is the current index in the iteration
    - *enumerable* is the enumerable object itself.

    It should return the true to include the item in the results, false otherwise.

    Note that in addition to a callback, you can also pass an optional target
    object that will be set as "this" on the context. This is a good way
    to give your iterator function access to the current object.

    Usage Example:

          if (people.some(isManager)) { Paychecks.addBiggerBonus(); }

    @method some
    @param {Function} callback The callback to execute
    @param {Object} [target] The target object to use
    @return {Array} A filtered array.
  */
  some: function(callback, target) {
    return !!this.find(function(x, idx, i) {
      return !!callback.call(target, x, idx, i);
    });
  },

  /**
    Returns true if the passed property resolves to true for any item in the
    enumerable.  This method is often simpler/faster than using a callback.

    @method someProperty
    @param {String} key the property to test
    @param {String} [value] optional value to test against.
    @return {Boolean} true
  */
  someProperty: function(key, value) {
    return this.some(iter.apply(this, arguments));
  },

  /**
    This will combine the values of the enumerator into a single value. It
    is a useful way to collect a summary value from an enumeration. This
    corresponds to the reduce() method defined in JavaScript 1.8.

    The callback method you provide should have the following signature (all
    parameters are optional):

          function(previousValue, item, index, enumerable);

    - *previousValue* is the value returned by the last call to the iterator.
    - *item* is the current item in the iteration.
    - *index* is the current index in the iteration
    - *enumerable* is the enumerable object itself.

    Return the new cumulative value.

    In addition to the callback you can also pass an initialValue. An error
    will be raised if you do not pass an initial value and the enumerator is
    empty.

    Note that unlike the other methods, this method does not allow you to
    pass a target object to set as this for the callback. It's part of the
    spec. Sorry.

    @method reduce
    @param {Function} callback The callback to execute
    @param {Object} initialValue Initial value for the reduce
    @param {String} reducerProperty internal use only.
    @return {Object} The reduced value.
  */
  reduce: function(callback, initialValue, reducerProperty) {
    if (typeof callback !== "function") { throw new TypeError(); }

    var ret = initialValue;

    this.forEach(function(item, i) {
      ret = callback.call(null, ret, item, i, this, reducerProperty);
    }, this);

    return ret;
  },

  /**
    Invokes the named method on every object in the receiver that
    implements it.  This method corresponds to the implementation in
    Prototype 1.6.

    @method invoke
    @param {String} methodName the name of the method
    @param {Object...} args optional arguments to pass as well.
    @return {Array} return values from calling invoke.
  */
  invoke: function(methodName) {
    var args, ret = [];
    if (arguments.length>1) args = a_slice.call(arguments, 1);

    this.forEach(function(x, idx) {
      var method = x && x[methodName];
      if ('function' === typeof method) {
        ret[idx] = args ? method.apply(x, args) : method.call(x);
      }
    }, this);

    return ret;
  },

  /**
    Simply converts the enumerable into a genuine array.  The order is not
    guaranteed.  Corresponds to the method implemented by Prototype.

    @method toArray
    @return {Array} the enumerable as an array.
  */
  toArray: function() {
    var ret = [];
    this.forEach(function(o, idx) { ret[idx] = o; });
    return ret ;
  },

  /**
    Returns a copy of the array with all null elements removed.

        var arr = ["a", null, "c", null];
        arr.compact(); => ["a", "c"]

    @method compact
    @return {Array} the array without null elements.
  */
  compact: function() { return this.without(null); },

  /**
    Returns a new enumerable that excludes the passed value.  The default
    implementation returns an array regardless of the receiver type unless
    the receiver does not contain the value.

        var arr = ["a", "b", "a", "c"];
        arr.without("a"); => ["b", "c"]

    @method without
    @param {Object} value
    @return {Ember.Enumerable}
  */
  without: function(value) {
    if (!this.contains(value)) return this; // nothing to do
    var ret = [] ;
    this.forEach(function(k) {
      if (k !== value) ret[ret.length] = k;
    }) ;
    return ret ;
  },

  /**
    Returns a new enumerable that contains only unique values.  The default
    implementation returns an array regardless of the receiver type.

        var arr = ["a", "a", "b", "b"];
        arr.uniq(); => ["a", "b"]

    @method uniq
    @return {Ember.Enumerable}
  */
  uniq: function() {
    var ret = [];
    this.forEach(function(k){
      if (a_indexOf(ret, k)<0) ret.push(k);
    });
    return ret;
  },

  /**
    This property will trigger anytime the enumerable's content changes.
    You can observe this property to be notified of changes to the enumerables
    content.

    For plain enumerables, this property is read only.  Ember.Array overrides
    this method.

    @property []
    @type Ember.Array
  */
  '[]': Ember.computed(function(key, value) {
    return this;
  }).property(),

  // ..........................................................
  // ENUMERABLE OBSERVERS
  //

  /**
    Registers an enumerable observer.   Must implement Ember.EnumerableObserver
    mixin.

    @method addEnumerableObserver
    @param target {Object}
    @param opts {Hash}
  */
  addEnumerableObserver: function(target, opts) {
    var willChange = (opts && opts.willChange) || 'enumerableWillChange',
        didChange  = (opts && opts.didChange) || 'enumerableDidChange';

    var hasObservers = get(this, 'hasEnumerableObservers');
    if (!hasObservers) Ember.propertyWillChange(this, 'hasEnumerableObservers');
    Ember.addListener(this, '@enumerable:before', target, willChange);
    Ember.addListener(this, '@enumerable:change', target, didChange);
    if (!hasObservers) Ember.propertyDidChange(this, 'hasEnumerableObservers');
    return this;
  },

  /**
    Removes a registered enumerable observer.

    @method removeEnumerableObserver
    @param target {Object}
    @param [opts] {Hash}
  */
  removeEnumerableObserver: function(target, opts) {
    var willChange = (opts && opts.willChange) || 'enumerableWillChange',
        didChange  = (opts && opts.didChange) || 'enumerableDidChange';

    var hasObservers = get(this, 'hasEnumerableObservers');
    if (hasObservers) Ember.propertyWillChange(this, 'hasEnumerableObservers');
    Ember.removeListener(this, '@enumerable:before', target, willChange);
    Ember.removeListener(this, '@enumerable:change', target, didChange);
    if (hasObservers) Ember.propertyDidChange(this, 'hasEnumerableObservers');
    return this;
  },

  /**
    Becomes true whenever the array currently has observers watching changes
    on the array.

    @property hasEnumerableObservers
    @type Boolean
  */
  hasEnumerableObservers: Ember.computed(function() {
    return Ember.hasListeners(this, '@enumerable:change') || Ember.hasListeners(this, '@enumerable:before');
  }).property(),


  /**
    Invoke this method just before the contents of your enumerable will
    change.  You can either omit the parameters completely or pass the objects
    to be removed or added if available or just a count.

    @method enumerableContentWillChange
    @param {Ember.Enumerable|Number} removing An enumerable of the objects to
      be removed or the number of items to be removed.
    @param {Ember.Enumerable|Number} adding An enumerable of the objects to be
      added or the number of items to be added.
    @chainable
  */
  enumerableContentWillChange: function(removing, adding) {

    var removeCnt, addCnt, hasDelta;

    if ('number' === typeof removing) removeCnt = removing;
    else if (removing) removeCnt = get(removing, 'length');
    else removeCnt = removing = -1;

    if ('number' === typeof adding) addCnt = adding;
    else if (adding) addCnt = get(adding,'length');
    else addCnt = adding = -1;

    hasDelta = addCnt<0 || removeCnt<0 || addCnt-removeCnt!==0;

    if (removing === -1) removing = null;
    if (adding   === -1) adding   = null;

    Ember.propertyWillChange(this, '[]');
    if (hasDelta) Ember.propertyWillChange(this, 'length');
    Ember.sendEvent(this, '@enumerable:before', [this, removing, adding]);

    return this;
  },

  /**
    Invoke this method when the contents of your enumerable has changed.
    This will notify any observers watching for content changes.  If your are
    implementing an ordered enumerable (such as an array), also pass the
    start and end values where the content changed so that it can be used to
    notify range observers.

    @method enumerableContentDidChange
    @param {Number} [start] optional start offset for the content change.
      For unordered enumerables, you should always pass -1.
    @param {Ember.Enumerable|Number} removing An enumerable of the objects to
      be removed or the number of items to be removed.
    @param {Ember.Enumerable|Number} adding  An enumerable of the objects to
      be added or the number of items to be added.
    @chainable
  */
  enumerableContentDidChange: function(removing, adding) {
    var notify = this.propertyDidChange, removeCnt, addCnt, hasDelta;

    if ('number' === typeof removing) removeCnt = removing;
    else if (removing) removeCnt = get(removing, 'length');
    else removeCnt = removing = -1;

    if ('number' === typeof adding) addCnt = adding;
    else if (adding) addCnt = get(adding, 'length');
    else addCnt = adding = -1;

    hasDelta = addCnt<0 || removeCnt<0 || addCnt-removeCnt!==0;

    if (removing === -1) removing = null;
    if (adding   === -1) adding   = null;

    Ember.sendEvent(this, '@enumerable:change', [this, removing, adding]);
    if (hasDelta) Ember.propertyDidChange(this, 'length');
    Ember.propertyDidChange(this, '[]');

    return this ;
  }

}) ;




})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

// ..........................................................
// HELPERS
//

var get = Ember.get, set = Ember.set, meta = Ember.meta, map = Ember.EnumerableUtils.map, cacheFor = Ember.cacheFor;

function none(obj) { return obj===null || obj===undefined; }

// ..........................................................
// ARRAY
//
/**
  This module implements Observer-friendly Array-like behavior.  This mixin is
  picked up by the Array class as well as other controllers, etc. that want to
  appear to be arrays.

  Unlike Ember.Enumerable, this mixin defines methods specifically for
  collections that provide index-ordered access to their contents.  When you
  are designing code that needs to accept any kind of Array-like object, you
  should use these methods instead of Array primitives because these will
  properly notify observers of changes to the array.

  Although these methods are efficient, they do add a layer of indirection to
  your application so it is a good idea to use them only when you need the
  flexibility of using both true JavaScript arrays and "virtual" arrays such
  as controllers and collections.

  You can use the methods defined in this module to access and modify array
  contents in a KVO-friendly way.  You can also be notified whenever the
  membership if an array changes by changing the syntax of the property to
  .observes('*myProperty.[]') .

  To support Ember.Array in your own class, you must override two
  primitives to use it: replace() and objectAt().

  Note that the Ember.Array mixin also incorporates the Ember.Enumerable mixin.  All
  Ember.Array-like objects are also enumerable.

  @class Array
  @namespace Ember
  @extends Ember.Mixin
  @uses Ember.Enumerable
  @since Ember 0.9.0
*/
Ember.Array = Ember.Mixin.create(Ember.Enumerable, /** @scope Ember.Array.prototype */ {

  // compatibility
  isSCArray: true,

  /**
    Your array must support the length property. Your replace methods should
    set this property whenever it changes.

    @property {Number} length
  */
  length: Ember.required(),

  /**
    Returns the object at the given index. If the given index is negative or
    is greater or equal than the array length, returns `undefined`.

    This is one of the primitives you must implement to support `Ember.Array`.
    If your object supports retrieving the value of an array item using `get()`
    (i.e. `myArray.get(0)`), then you do not need to implement this method
    yourself.

        var arr = ['a', 'b', 'c', 'd'];
        arr.objectAt(0);  => "a"
        arr.objectAt(3);  => "d"
        arr.objectAt(-1); => undefined
        arr.objectAt(4);  => undefined
        arr.objectAt(5);  => undefined

    @method objectAt
    @param {Number} idx
      The index of the item to return.
  */
  objectAt: function(idx) {
    if ((idx < 0) || (idx>=get(this, 'length'))) return undefined ;
    return get(this, idx);
  },

  /**
    This returns the objects at the specified indexes, using `objectAt`.

        var arr =Â ['a', 'b', 'c', 'd'];
        arr.objectsAt([0, 1, 2]) => ["a", "b", "c"]
        arr.objectsAt([2, 3, 4]) => ["c", "d", undefined]

    @method objectsAt
    @param {Array} indexes
      An array of indexes of items to return.
   */
  objectsAt: function(indexes) {
    var self = this;
    return map(indexes, function(idx){ return self.objectAt(idx); });
  },

  // overrides Ember.Enumerable version
  nextObject: function(idx) {
    return this.objectAt(idx);
  },

  /**
    This is the handler for the special array content property.  If you get
    this property, it will return this.  If you set this property it a new
    array, it will replace the current content.

    This property overrides the default property defined in Ember.Enumerable.

    @property []
  */
  '[]': Ember.computed(function(key, value) {
    if (value !== undefined) this.replace(0, get(this, 'length'), value) ;
    return this ;
  }).property(),

  firstObject: Ember.computed(function() {
    return this.objectAt(0);
  }).property(),

  lastObject: Ember.computed(function() {
    return this.objectAt(get(this, 'length')-1);
  }).property(),

  // optimized version from Enumerable
  contains: function(obj){
    return this.indexOf(obj) >= 0;
  },

  // Add any extra methods to Ember.Array that are native to the built-in Array.
  /**
    Returns a new array that is a slice of the receiver. This implementation
    uses the observable array methods to retrieve the objects for the new
    slice.

        var arr = ['red', 'green', 'blue'];
        arr.slice(0);      => ['red', 'green', 'blue']
        arr.slice(0, 2);   => ['red', 'green']
        arr.slice(1, 100); => ['green', 'blue']

    @method slice
    @param beginIndex {Integer} (Optional) index to begin slicing from.
    @param endIndex {Integer} (Optional) index to end the slice at.
    @return {Array} New array with specified slice
  */
  slice: function(beginIndex, endIndex) {
    var ret = [];
    var length = get(this, 'length') ;
    if (none(beginIndex)) beginIndex = 0 ;
    if (none(endIndex) || (endIndex > length)) endIndex = length ;
    while(beginIndex < endIndex) {
      ret[ret.length] = this.objectAt(beginIndex++) ;
    }
    return ret ;
  },

  /**
    Returns the index of the given object's first occurrence.
    If no startAt argument is given, the starting location to
    search is 0. If it's negative, will count backward from
    the end of the array. Returns -1 if no match is found.

        var arr = ["a", "b", "c", "d", "a"];
        arr.indexOf("a");      =>  0
        arr.indexOf("z");      => -1
        arr.indexOf("a", 2);   =>  4
        arr.indexOf("a", -1);  =>  4
        arr.indexOf("b", 3);   => -1
        arr.indexOf("a", 100); => -1

    @method indexOf
    @param {Object} object the item to search for
    @param {Number} startAt optional starting location to search, default 0
    @return {Number} index or -1 if not found
  */
  indexOf: function(object, startAt) {
    var idx, len = get(this, 'length');

    if (startAt === undefined) startAt = 0;
    if (startAt < 0) startAt += len;

    for(idx=startAt;idx<len;idx++) {
      if (this.objectAt(idx, true) === object) return idx ;
    }
    return -1;
  },

  /**
    Returns the index of the given object's last occurrence.
    If no startAt argument is given, the search starts from
    the last position. If it's negative, will count backward
    from the end of the array. Returns -1 if no match is found.

        var arr = ["a", "b", "c", "d", "a"];
        arr.lastIndexOf("a");      =>  4
        arr.lastIndexOf("z");      => -1
        arr.lastIndexOf("a", 2);   =>  0
        arr.lastIndexOf("a", -1);  =>  4
        arr.lastIndexOf("b", 3);   =>  1
        arr.lastIndexOf("a", 100); =>  4

    @method lastIndexOf
    @param {Object} object the item to search for
    @param {Number} startAt optional starting location to search, default 0
    @return {Number} index or -1 if not found
  */
  lastIndexOf: function(object, startAt) {
    var idx, len = get(this, 'length');

    if (startAt === undefined || startAt >= len) startAt = len-1;
    if (startAt < 0) startAt += len;

    for(idx=startAt;idx>=0;idx--) {
      if (this.objectAt(idx) === object) return idx ;
    }
    return -1;
  },

  // ..........................................................
  // ARRAY OBSERVERS
  //

  /**
    Adds an array observer to the receiving array.  The array observer object
    normally must implement two methods:

    * `arrayWillChange(start, removeCount, addCount)` - This method will be
      called just before the array is modified.
    * `arrayDidChange(start, removeCount, addCount)` - This method will be
      called just after the array is modified.

    Both callbacks will be passed the starting index of the change as well a
    a count of the items to be removed and added.  You can use these callbacks
    to optionally inspect the array during the change, clear caches, or do
    any other bookkeeping necessary.

    In addition to passing a target, you can also include an options hash
    which you can use to override the method names that will be invoked on the
    target.

    @method addArrayObserver
    @param {Object} target The observer object.
    @param {Hash} opts Optional hash of configuration options including
      willChange, didChange, and a context option.
    @return {Ember.Array} receiver
  */
  addArrayObserver: function(target, opts) {
    var willChange = (opts && opts.willChange) || 'arrayWillChange',
        didChange  = (opts && opts.didChange) || 'arrayDidChange';

    var hasObservers = get(this, 'hasArrayObservers');
    if (!hasObservers) Ember.propertyWillChange(this, 'hasArrayObservers');
    Ember.addListener(this, '@array:before', target, willChange);
    Ember.addListener(this, '@array:change', target, didChange);
    if (!hasObservers) Ember.propertyDidChange(this, 'hasArrayObservers');
    return this;
  },

  /**
    Removes an array observer from the object if the observer is current
    registered.  Calling this method multiple times with the same object will
    have no effect.

    @method removeArrayObserver
    @param {Object} target The object observing the array.
    @return {Ember.Array} receiver
  */
  removeArrayObserver: function(target, opts) {
    var willChange = (opts && opts.willChange) || 'arrayWillChange',
        didChange  = (opts && opts.didChange) || 'arrayDidChange';

    var hasObservers = get(this, 'hasArrayObservers');
    if (hasObservers) Ember.propertyWillChange(this, 'hasArrayObservers');
    Ember.removeListener(this, '@array:before', target, willChange);
    Ember.removeListener(this, '@array:change', target, didChange);
    if (hasObservers) Ember.propertyDidChange(this, 'hasArrayObservers');
    return this;
  },

  /**
    Becomes true whenever the array currently has observers watching changes
    on the array.

    @property Boolean
  */
  hasArrayObservers: Ember.computed(function() {
    return Ember.hasListeners(this, '@array:change') || Ember.hasListeners(this, '@array:before');
  }).property(),

  /**
    If you are implementing an object that supports Ember.Array, call this
    method just before the array content changes to notify any observers and
    invalidate any related properties.  Pass the starting index of the change
    as well as a delta of the amounts to change.

    @method arrayContentWillChange
    @param {Number} startIdx The starting index in the array that will change.
    @param {Number} removeAmt The number of items that will be removed.  If you pass null assumes 0
    @param {Number} addAmt The number of items that will be added.  If you pass null assumes 0.
    @return {Ember.Array} receiver
  */
  arrayContentWillChange: function(startIdx, removeAmt, addAmt) {

    // if no args are passed assume everything changes
    if (startIdx===undefined) {
      startIdx = 0;
      removeAmt = addAmt = -1;
    } else {
      if (removeAmt === undefined) removeAmt=-1;
      if (addAmt    === undefined) addAmt=-1;
    }

    // Make sure the @each proxy is set up if anyone is observing @each
    if (Ember.isWatching(this, '@each')) { get(this, '@each'); }

    Ember.sendEvent(this, '@array:before', [this, startIdx, removeAmt, addAmt]);

    var removing, lim;
    if (startIdx>=0 && removeAmt>=0 && get(this, 'hasEnumerableObservers')) {
      removing = [];
      lim = startIdx+removeAmt;
      for(var idx=startIdx;idx<lim;idx++) removing.push(this.objectAt(idx));
    } else {
      removing = removeAmt;
    }

    this.enumerableContentWillChange(removing, addAmt);

    return this;
  },

  arrayContentDidChange: function(startIdx, removeAmt, addAmt) {

    // if no args are passed assume everything changes
    if (startIdx===undefined) {
      startIdx = 0;
      removeAmt = addAmt = -1;
    } else {
      if (removeAmt === undefined) removeAmt=-1;
      if (addAmt    === undefined) addAmt=-1;
    }

    var adding, lim;
    if (startIdx>=0 && addAmt>=0 && get(this, 'hasEnumerableObservers')) {
      adding = [];
      lim = startIdx+addAmt;
      for(var idx=startIdx;idx<lim;idx++) adding.push(this.objectAt(idx));
    } else {
      adding = addAmt;
    }

    this.enumerableContentDidChange(removeAmt, adding);
    Ember.sendEvent(this, '@array:change', [this, startIdx, removeAmt, addAmt]);

    var length      = get(this, 'length'),
        cachedFirst = cacheFor(this, 'firstObject'),
        cachedLast  = cacheFor(this, 'lastObject');
    if (this.objectAt(0) !== cachedFirst) {
      Ember.propertyWillChange(this, 'firstObject');
      Ember.propertyDidChange(this, 'firstObject');
    }
    if (this.objectAt(length-1) !== cachedLast) {
      Ember.propertyWillChange(this, 'lastObject');
      Ember.propertyDidChange(this, 'lastObject');
    }

    return this;
  },

  // ..........................................................
  // ENUMERATED PROPERTIES
  //

  /**
    Returns a special object that can be used to observe individual properties
    on the array.  Just get an equivalent property on this object and it will
    return an enumerable that maps automatically to the named key on the
    member objects.

    @property @each
  */
  '@each': Ember.computed(function() {
    if (!this.__each) this.__each = new Ember.EachProxy(this);
    return this.__each;
  }).property()

}) ;

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/


/**
  Implements some standard methods for comparing objects. Add this mixin to
  any class you create that can compare its instances.

  You should implement the compare() method.

  @class Comparable
  @namespace Ember
  @extends Ember.Mixin
  @since Ember 0.9
*/
Ember.Comparable = Ember.Mixin.create( /** @scope Ember.Comparable.prototype */{

  /**
    walk like a duck. Indicates that the object can be compared.

    @property isComparable
    @type Boolean
    @default true
  */
  isComparable: true,

  /**
    Override to return the result of the comparison of the two parameters. The
    compare method should return:

      - `-1` if `a < b`
      - `0` if `a == b`
      - `1` if `a > b`

    Default implementation raises an exception.

    @method compare
    @param a {Object} the first object to compare
    @param b {Object} the second object to compare
    @return {Integer} the result of the comparison
  */
  compare: Ember.required(Function)

});


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/



var get = Ember.get, set = Ember.set;

/**
  Implements some standard methods for copying an object.  Add this mixin to
  any object you create that can create a copy of itself.  This mixin is
  added automatically to the built-in array.

  You should generally implement the copy() method to return a copy of the
  receiver.

  Note that frozenCopy() will only work if you also implement Ember.Freezable.

  @class Copyable
  @namespace Ember
  @extends Ember.Mixin
  @since Ember 0.9
*/
Ember.Copyable = Ember.Mixin.create(
/** @scope Ember.Copyable.prototype */ {

  /**
    Override to return a copy of the receiver.  Default implementation raises
    an exception.

    @method copy
    @param deep {Boolean} if true, a deep copy of the object should be made
    @return {Object} copy of receiver
  */
  copy: Ember.required(Function),

  /**
    If the object implements Ember.Freezable, then this will return a new copy
    if the object is not frozen and the receiver if the object is frozen.

    Raises an exception if you try to call this method on a object that does
    not support freezing.

    You should use this method whenever you want a copy of a freezable object
    since a freezable object can simply return itself without actually
    consuming more memory.

    @method frozenCopy
    @return {Object} copy of receiver or receiver
  */
  frozenCopy: function() {
    if (Ember.Freezable && Ember.Freezable.detect(this)) {
      return get(this, 'isFrozen') ? this : this.copy().freeze();
    } else {
      throw new Error(Ember.String.fmt("%@ does not support freezing", [this]));
    }
  }
});




})();



(function() {
/**
@module ember
@submodule ember-runtime
*/


var get = Ember.get, set = Ember.set;

/**
  The Ember.Freezable mixin implements some basic methods for marking an object
  as frozen. Once an object is frozen it should be read only. No changes
  may be made the internal state of the object.

  ## Enforcement

  To fully support freezing in your subclass, you must include this mixin and
  override any method that might alter any property on the object to instead
  raise an exception. You can check the state of an object by checking the
  isFrozen property.

  Although future versions of JavaScript may support language-level freezing
  object objects, that is not the case today. Even if an object is freezable,
  it is still technically possible to modify the object, even though it could
  break other parts of your application that do not expect a frozen object to
  change. It is, therefore, very important that you always respect the
  isFrozen property on all freezable objects.

  ## Example Usage

  The example below shows a simple object that implement the Ember.Freezable
  protocol.

        Contact = Ember.Object.extend(Ember.Freezable, {

          firstName: null,

          lastName: null,

          // swaps the names
          swapNames: function() {
            if (this.get('isFrozen')) throw Ember.FROZEN_ERROR;
            var tmp = this.get('firstName');
            this.set('firstName', this.get('lastName'));
            this.set('lastName', tmp);
            return this;
          }

        });

        c = Context.create({ firstName: "John", lastName: "Doe" });
        c.swapNames();  => returns c
        c.freeze();
        c.swapNames();  => EXCEPTION

  ## Copying

  Usually the Ember.Freezable protocol is implemented in cooperation with the
  Ember.Copyable protocol, which defines a frozenCopy() method that will return
  a frozen object, if the object implements this method as well.

  @class Freezable
  @namespace Ember
  @extends Ember.Mixin
  @since Ember 0.9
*/
Ember.Freezable = Ember.Mixin.create(
/** @scope Ember.Freezable.prototype */ {

  /**
    Set to true when the object is frozen.  Use this property to detect whether
    your object is frozen or not.

    @property isFrozen
    @type Boolean
  */
  isFrozen: false,

  /**
    Freezes the object.  Once this method has been called the object should
    no longer allow any properties to be edited.

    @method freeze
    @return {Object} receiver
  */
  freeze: function() {
    if (get(this, 'isFrozen')) return this;
    set(this, 'isFrozen', true);
    return this;
  }

});

Ember.FROZEN_ERROR = "Frozen object cannot be modified.";

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var forEach = Ember.EnumerableUtils.forEach;

/**
  This mixin defines the API for modifying generic enumerables.  These methods
  can be applied to an object regardless of whether it is ordered or
  unordered.

  Note that an Enumerable can change even if it does not implement this mixin.
  For example, a MappedEnumerable cannot be directly modified but if its
  underlying enumerable changes, it will change also.

  ## Adding Objects

  To add an object to an enumerable, use the addObject() method.  This
  method will only add the object to the enumerable if the object is not
  already present and the object if of a type supported by the enumerable.

      set.addObject(contact);

  ## Removing Objects

  To remove an object form an enumerable, use the removeObject() method.  This
  will only remove the object if it is already in the enumerable, otherwise
  this method has no effect.

      set.removeObject(contact);

  ## Implementing In Your Own Code

  If you are implementing an object and want to support this API, just include
  this mixin in your class and implement the required methods.  In your unit
  tests, be sure to apply the Ember.MutableEnumerableTests to your object.

  @class MutableEnumerable
  @namespace Ember
  @extends Ember.Mixin
  @uses Ember.Enumerable
*/
Ember.MutableEnumerable = Ember.Mixin.create(Ember.Enumerable,
  /** @scope Ember.MutableEnumerable.prototype */ {

  /**
    __Required.__ You must implement this method to apply this mixin.

    Attempts to add the passed object to the receiver if the object is not
    already present in the collection. If the object is present, this method
    has no effect.

    If the passed object is of a type not supported by the receiver
    then this method should raise an exception.

    @method addObject
    @param {Object} object The object to add to the enumerable.
    @return {Object} the passed object
  */
  addObject: Ember.required(Function),

  /**
    Adds each object in the passed enumerable to the receiver.

    @method addObjects
    @param {Ember.Enumerable} objects the objects to add.
    @return {Object} receiver
  */
  addObjects: function(objects) {
    Ember.beginPropertyChanges(this);
    forEach(objects, function(obj) { this.addObject(obj); }, this);
    Ember.endPropertyChanges(this);
    return this;
  },

  /**
    __Required.__ You must implement this method to apply this mixin.

    Attempts to remove the passed object from the receiver collection if the
    object is in present in the collection.  If the object is not present,
    this method has no effect.

    If the passed object is of a type not supported by the receiver
    then this method should raise an exception.

    @method removeObject
    @param {Object} object The object to remove from the enumerable.
    @return {Object} the passed object
  */
  removeObject: Ember.required(Function),


  /**
    Removes each objects in the passed enumerable from the receiver.

    @method removeObjects
    @param {Ember.Enumerable} objects the objects to remove
    @return {Object} receiver
  */
  removeObjects: function(objects) {
    Ember.beginPropertyChanges(this);
    forEach(objects, function(obj) { this.removeObject(obj); }, this);
    Ember.endPropertyChanges(this);
    return this;
  }

});

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/
// ..........................................................
// CONSTANTS
//

var OUT_OF_RANGE_EXCEPTION = "Index out of range" ;
var EMPTY = [];

// ..........................................................
// HELPERS
//

var get = Ember.get, set = Ember.set, forEach = Ember.EnumerableUtils.forEach;

/**
  This mixin defines the API for modifying array-like objects.  These methods
  can be applied only to a collection that keeps its items in an ordered set.

  Note that an Array can change even if it does not implement this mixin.
  For example, one might implement a SparseArray that cannot be directly
  modified, but if its underlying enumerable changes, it will change also.

  @class MutableArray
  @namespace Ember
  @extends Ember.Mixin
  @uses Ember.Array
  @uses Ember.MutableEnumerable
*/
Ember.MutableArray = Ember.Mixin.create(Ember.Array, Ember.MutableEnumerable,
  /** @scope Ember.MutableArray.prototype */ {

  /**
    __Required.__ You must implement this method to apply this mixin.

    This is one of the primitives you must implement to support Ember.Array.  You
    should replace amt objects started at idx with the objects in the passed
    array.  You should also call this.enumerableContentDidChange() ;

    @method replace
    @param {Number} idx Starting index in the array to replace.  If idx >= length,
      then append to the end of the array.
    @param {Number} amt Number of elements that should be removed from the array,
      starting at *idx*.
    @param {Array} objects An array of zero or more objects that should be inserted
      into the array at *idx*
  */
  replace: Ember.required(),

  /**
    Remove all elements from self. This is useful if you
    want to reuse an existing array without having to recreate it.

        var colors = ["red", "green", "blue"];
        color.length();  => 3
        colors.clear();  => []
        colors.length(); => 0

    @method clear
    @return {Ember.Array} An empty Array. 
  */
  clear: function () {
    var len = get(this, 'length');
    if (len === 0) return this;
    this.replace(0, len, EMPTY);
    return this;
  },

  /**
    This will use the primitive replace() method to insert an object at the
    specified index.

        var colors = ["red", "green", "blue"];
        colors.insertAt(2, "yellow"); => ["red", "green", "yellow", "blue"]
        colors.insertAt(5, "orange"); => Error: Index out of range

    @method insertAt
    @param {Number} idx index of insert the object at.
    @param {Object} object object to insert
  */
  insertAt: function(idx, object) {
    if (idx > get(this, 'length')) throw new Error(OUT_OF_RANGE_EXCEPTION) ;
    this.replace(idx, 0, [object]) ;
    return this ;
  },

  /**
    Remove an object at the specified index using the replace() primitive
    method.  You can pass either a single index, or a start and a length.

    If you pass a start and length that is beyond the
    length this method will throw an Ember.OUT_OF_RANGE_EXCEPTION

        var colors = ["red", "green", "blue", "yellow", "orange"];
        colors.removeAt(0); => ["green", "blue", "yellow", "orange"]
        colors.removeAt(2, 2); => ["green", "blue"]
        colors.removeAt(4, 2); => Error: Index out of range

    @method removeAt
    @param {Number} start index, start of range
    @param {Number} len length of passing range
    @return {Object} receiver
  */
  removeAt: function(start, len) {
    if ('number' === typeof start) {

      if ((start < 0) || (start >= get(this, 'length'))) {
        throw new Error(OUT_OF_RANGE_EXCEPTION);
      }

      // fast case
      if (len === undefined) len = 1;
      this.replace(start, len, EMPTY);
    }

    return this ;
  },

  /**
    Push the object onto the end of the array.  Works just like push() but it
    is KVO-compliant.

        var colors = ["red", "green", "blue"];
        colors.pushObject("black"); => ["red", "green", "blue", "black"]
        colors.pushObject(["yellow", "orange"]); => ["red", "green", "blue", "black", ["yellow", "orange"]]

    @method pushObject
    @param {anything} obj object to push
  */
  pushObject: function(obj) {
    this.insertAt(get(this, 'length'), obj) ;
    return obj ;
  },

  /**
    Add the objects in the passed numerable to the end of the array.  Defers
    notifying observers of the change until all objects are added.

        var colors = ["red", "green", "blue"];
        colors.pushObjects("black"); => ["red", "green", "blue", "black"]
        colors.pushObjects(["yellow", "orange"]); => ["red", "green", "blue", "black", "yellow", "orange"]

    @method pushObjects
    @param {Ember.Enumerable} objects the objects to add
    @return {Ember.Array} receiver
  */
  pushObjects: function(objects) {
    this.replace(get(this, 'length'), 0, objects);
    return this;
  },

  /**
    Pop object from array or nil if none are left.  Works just like pop() but
    it is KVO-compliant.

        var colors = ["red", "green", "blue"];
        colors.popObject(); => "blue"
        console.log(colors); => ["red", "green"]

    @method popObject
    @return object
  */
  popObject: function() {
    var len = get(this, 'length') ;
    if (len === 0) return null ;

    var ret = this.objectAt(len-1) ;
    this.removeAt(len-1, 1) ;
    return ret ;
  },

  /**
    Shift an object from start of array or nil if none are left.  Works just
    like shift() but it is KVO-compliant.

        var colors = ["red", "green", "blue"];
        colors.shiftObject(); => "red"
        console.log(colors); => ["green", "blue"]

    @method shiftObject
    @return object
  */
  shiftObject: function() {
    if (get(this, 'length') === 0) return null ;
    var ret = this.objectAt(0) ;
    this.removeAt(0) ;
    return ret ;
  },

  /**
    Unshift an object to start of array.  Works just like unshift() but it is
    KVO-compliant.

        var colors = ["red", "green", "blue"];
        colors.unshiftObject("yellow"); => ["yellow", "red", "green", "blue"]
        colors.unshiftObject(["black", "white"]); => [["black", "white"], "yellow", "red", "green", "blue"]

    @method unshiftObject
    @param {anything} obj object to unshift
  */
  unshiftObject: function(obj) {
    this.insertAt(0, obj) ;
    return obj ;
  },

  /**
    Adds the named objects to the beginning of the array.  Defers notifying
    observers until all objects have been added.

        var colors = ["red", "green", "blue"];
        colors.unshiftObjects(["black", "white"]); => ["black", "white", "red", "green", "blue"]
        colors.unshiftObjects("yellow"); => Type Error: 'undefined' is not a function

    @method unshiftObjects
    @param {Ember.Enumerable} objects the objects to add
    @return {Ember.Array} receiver
  */
  unshiftObjects: function(objects) {
    this.replace(0, 0, objects);
    return this;
  },

  /**
    Reverse objects in the array.  Works just like reverse() but it is
    KVO-compliant.

    @method reverseObjects
    @return {Ember.Array} receiver
   */
  reverseObjects: function() {
    var len = get(this, 'length');
    if (len === 0) return this;
    var objects = this.toArray().reverse();
    this.replace(0, len, objects);
    return this;
  },

  /**
    Replace all the the receiver's content with content of the argument.
    If argument is an empty array receiver will be cleared.

        var colors = ["red", "green", "blue"];
        colors.setObjects(["black", "white"]); => ["black", "white"]
        colors.setObjects([]); => []

    @method setObjects
    @param {Ember.Array} objects array whose content will be used for replacing
        the content of the receiver
    @return {Ember.Array} receiver with the new content
   */
  setObjects: function(objects) {
    if (objects.length === 0) return this.clear();

    var len = get(this, 'length');
    this.replace(0, len, objects);
    return this;
  },

  // ..........................................................
  // IMPLEMENT Ember.MutableEnumerable
  //

  removeObject: function(obj) {
    var loc = get(this, 'length') || 0;
    while(--loc >= 0) {
      var curObject = this.objectAt(loc) ;
      if (curObject === obj) this.removeAt(loc) ;
    }
    return this ;
  },

  addObject: function(obj) {
    if (!this.contains(obj)) this.pushObject(obj);
    return this ;
  }

});


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get, set = Ember.set, defineProperty = Ember.defineProperty;

/**
  ## Overview

  This mixin provides properties and property observing functionality, core
  features of the Ember object model.

  Properties and observers allow one object to observe changes to a
  property on another object. This is one of the fundamental ways that
  models, controllers and views communicate with each other in an Ember
  application.

  Any object that has this mixin applied can be used in observer
  operations. That includes Ember.Object and most objects you will
  interact with as you write your Ember application.

  Note that you will not generally apply this mixin to classes yourself,
  but you will use the features provided by this module frequently, so it
  is important to understand how to use it.

  ## Using get() and set()

  Because of Ember's support for bindings and observers, you will always
  access properties using the get method, and set properties using the
  set method. This allows the observing objects to be notified and
  computed properties to be handled properly.

  More documentation about `get` and `set` are below.

  ## Observing Property Changes

  You typically observe property changes simply by adding the `observes`
  call to the end of your method declarations in classes that you write.
  For example:

      Ember.Object.create({
        valueObserver: function() {
          // Executes whenever the "value" property changes
        }.observes('value')
      });

  Although this is the most common way to add an observer, this capability
  is actually built into the Ember.Object class on top of two methods
  defined in this mixin: `addObserver` and `removeObserver`. You can use
  these two methods to add and remove observers yourself if you need to
  do so at runtime.

  To add an observer for a property, call:

      object.addObserver('propertyKey', targetObject, targetAction)

  This will call the `targetAction` method on the `targetObject` to be called
  whenever the value of the `propertyKey` changes.

  Note that if `propertyKey` is a computed property, the observer will be
  called when any of the property dependencies are changed, even if the
  resulting value of the computed property is unchanged. This is necessary
  because computed properties are not computed until `get` is called.

  @class Observable
  @namespace Ember
  @extends Ember.Mixin
*/
Ember.Observable = Ember.Mixin.create(/** @scope Ember.Observable.prototype */ {

  // compatibility
  isObserverable: true,

  /**
    Retrieves the value of a property from the object.

    This method is usually similar to using object[keyName] or object.keyName,
    however it supports both computed properties and the unknownProperty
    handler.

    Because `get` unifies the syntax for accessing all these kinds
    of properties, it can make many refactorings easier, such as replacing a
    simple property with a computed property, or vice versa.

    ### Computed Properties

    Computed properties are methods defined with the `property` modifier
    declared at the end, such as:

          fullName: function() {
            return this.getEach('firstName', 'lastName').compact().join(' ');
          }.property('firstName', 'lastName')

    When you call `get` on a computed property, the function will be
    called and the return value will be returned instead of the function
    itself.

    ### Unknown Properties

    Likewise, if you try to call `get` on a property whose value is
    undefined, the unknownProperty() method will be called on the object.
    If this method returns any value other than undefined, it will be returned
    instead. This allows you to implement "virtual" properties that are
    not defined upfront.

    @method get
    @param {String} key The property to retrieve
    @return {Object} The property value or undefined.
  */
  get: function(keyName) {
    return get(this, keyName);
  },

  /**
    To get multiple properties at once, call getProperties
    with a list of strings or an array:

          record.getProperties('firstName', 'lastName', 'zipCode'); // => { firstName: 'John', lastName: 'Doe', zipCode: '10011' }

   is equivalent to:

          record.getProperties(['firstName', 'lastName', 'zipCode']); // => { firstName: 'John', lastName: 'Doe', zipCode: '10011' }

    @method getProperties
    @param {String...|Array} list of keys to get
    @return {Hash}
  */
  getProperties: function() {
    var ret = {};
    var propertyNames = arguments;
    if (arguments.length === 1 && Ember.typeOf(arguments[0]) === 'array') {
      propertyNames = arguments[0];
    }
    for(var i = 0; i < propertyNames.length; i++) {
      ret[propertyNames[i]] = get(this, propertyNames[i]);
    }
    return ret;
  },

  /**
    Sets the provided key or path to the value.

    This method is generally very similar to calling object[key] = value or
    object.key = value, except that it provides support for computed
    properties, the unknownProperty() method and property observers.

    ### Computed Properties

    If you try to set a value on a key that has a computed property handler
    defined (see the get() method for an example), then set() will call
    that method, passing both the value and key instead of simply changing
    the value itself. This is useful for those times when you need to
    implement a property that is composed of one or more member
    properties.

    ### Unknown Properties

    If you try to set a value on a key that is undefined in the target
    object, then the unknownProperty() handler will be called instead. This
    gives you an opportunity to implement complex "virtual" properties that
    are not predefined on the object. If unknownProperty() returns
    undefined, then set() will simply set the value on the object.

    ### Property Observers

    In addition to changing the property, set() will also register a
    property change with the object. Unless you have placed this call
    inside of a beginPropertyChanges() and endPropertyChanges(), any "local"
    observers (i.e. observer methods declared on the same object), will be
    called immediately. Any "remote" observers (i.e. observer methods
    declared on another object) will be placed in a queue and called at a
    later time in a coalesced manner.

    ### Chaining

    In addition to property changes, set() returns the value of the object
    itself so you can do chaining like this:

          record.set('firstName', 'Charles').set('lastName', 'Jolley');

    @method set
    @param {String} key The property to set
    @param {Object} value The value to set or null.
    @return {Ember.Observable}
  */
  set: function(keyName, value) {
    set(this, keyName, value);
    return this;
  },

  /**
    To set multiple properties at once, call setProperties
    with a Hash:

          record.setProperties({ firstName: 'Charles', lastName: 'Jolley' });

    @method setProperties
    @param {Hash} hash the hash of keys and values to set
    @return {Ember.Observable}
  */
  setProperties: function(hash) {
    return Ember.setProperties(this, hash);
  },

  /**
    Begins a grouping of property changes.

    You can use this method to group property changes so that notifications
    will not be sent until the changes are finished. If you plan to make a
    large number of changes to an object at one time, you should call this
    method at the beginning of the changes to begin deferring change
    notifications. When you are done making changes, call endPropertyChanges()
    to deliver the deferred change notifications and end deferring.

    @method beginPropertyChanges
    @return {Ember.Observable}
  */
  beginPropertyChanges: function() {
    Ember.beginPropertyChanges();
    return this;
  },

  /**
    Ends a grouping of property changes.

    You can use this method to group property changes so that notifications
    will not be sent until the changes are finished. If you plan to make a
    large number of changes to an object at one time, you should call
    beginPropertyChanges() at the beginning of the changes to defer change
    notifications. When you are done making changes, call this method to
    deliver the deferred change notifications and end deferring.

    @method endPropertyChanges
    @return {Ember.Observable}
  */
  endPropertyChanges: function() {
    Ember.endPropertyChanges();
    return this;
  },

  /**
    Notify the observer system that a property is about to change.

    Sometimes you need to change a value directly or indirectly without
    actually calling get() or set() on it. In this case, you can use this
    method and propertyDidChange() instead. Calling these two methods
    together will notify all observers that the property has potentially
    changed value.

    Note that you must always call propertyWillChange and propertyDidChange as
    a pair. If you do not, it may get the property change groups out of order
    and cause notifications to be delivered more often than you would like.

    @method propertyWillChange
    @param {String} key The property key that is about to change.
    @return {Ember.Observable}
  */
  propertyWillChange: function(keyName){
    Ember.propertyWillChange(this, keyName);
    return this;
  },

  /**
    Notify the observer system that a property has just changed.

    Sometimes you need to change a value directly or indirectly without
    actually calling get() or set() on it. In this case, you can use this
    method and propertyWillChange() instead. Calling these two methods
    together will notify all observers that the property has potentially
    changed value.

    Note that you must always call propertyWillChange and propertyDidChange as
    a pair. If you do not, it may get the property change groups out of order
    and cause notifications to be delivered more often than you would like.

    @method propertyDidChange
    @param {String} keyName The property key that has just changed.
    @return {Ember.Observable}
  */
  propertyDidChange: function(keyName) {
    Ember.propertyDidChange(this, keyName);
    return this;
  },

  /**
    Convenience method to call `propertyWillChange` and `propertyDidChange` in
    succession.

    @method notifyPropertyChange
    @param {String} keyName The property key to be notified about.
    @return {Ember.Observable}
  */
  notifyPropertyChange: function(keyName) {
    this.propertyWillChange(keyName);
    this.propertyDidChange(keyName);
    return this;
  },

  addBeforeObserver: function(key, target, method) {
    Ember.addBeforeObserver(this, key, target, method);
  },

  /**
    Adds an observer on a property.

    This is the core method used to register an observer for a property.

    Once you call this method, anytime the key's value is set, your observer
    will be notified. Note that the observers are triggered anytime the
    value is set, regardless of whether it has actually changed. Your
    observer should be prepared to handle that.

    You can also pass an optional context parameter to this method. The
    context will be passed to your observer method whenever it is triggered.
    Note that if you add the same target/method pair on a key multiple times
    with different context parameters, your observer will only be called once
    with the last context you passed.

    ### Observer Methods

    Observer methods you pass should generally have the following signature if
    you do not pass a "context" parameter:

          fooDidChange: function(sender, key, value, rev);

    The sender is the object that changed. The key is the property that
    changes. The value property is currently reserved and unused. The rev
    is the last property revision of the object when it changed, which you can
    use to detect if the key value has really changed or not.

    If you pass a "context" parameter, the context will be passed before the
    revision like so:

          fooDidChange: function(sender, key, value, context, rev);

    Usually you will not need the value, context or revision parameters at
    the end. In this case, it is common to write observer methods that take
    only a sender and key value as parameters or, if you aren't interested in
    any of these values, to write an observer that has no parameters at all.

    @method addObserver
    @param {String} key The key to observer
    @param {Object} target The target object to invoke
    @param {String|Function} method The method to invoke.
    @return {Ember.Object} self
  */
  addObserver: function(key, target, method) {
    Ember.addObserver(this, key, target, method);
  },

  /**
    Remove an observer you have previously registered on this object. Pass
    the same key, target, and method you passed to addObserver() and your
    target will no longer receive notifications.

    @method removeObserver
    @param {String} key The key to observer
    @param {Object} target The target object to invoke
    @param {String|Function} method The method to invoke.
    @return {Ember.Observable} receiver
  */
  removeObserver: function(key, target, method) {
    Ember.removeObserver(this, key, target, method);
  },

  /**
    Returns true if the object currently has observers registered for a
    particular key. You can use this method to potentially defer performing
    an expensive action until someone begins observing a particular property
    on the object.

    @method hasObserverFor
    @param {String} key Key to check
    @return {Boolean}
  */
  hasObserverFor: function(key) {
    return Ember.hasListeners(this, key+':change');
  },

  /**
    This method will be called when a client attempts to get the value of a
    property that has not been defined in one of the typical ways. Override
    this method to create "virtual" properties.

    @method unknownProperty
    @param {String} key The name of the unknown property that was requested.
    @return {Object} The property value or undefined. Default is undefined.
  */
  unknownProperty: function(key) {
    return undefined;
  },

  /**
    This method will be called when a client attempts to set the value of a
    property that has not been defined in one of the typical ways. Override
    this method to create "virtual" properties.

    @method setUnknownProperty
    @param {String} key The name of the unknown property to be set.
    @param {Object} value The value the unknown property is to be set to.
  */
  setUnknownProperty: function(key, value) {
    defineProperty(this, key);
    set(this, key, value);
  },

  /**
    @deprecated
    @method getPath
    @param {String} path The property path to retrieve
    @return {Object} The property value or undefined.
  */
  getPath: function(path) {
    Ember.deprecate("getPath is deprecated since get now supports paths");
    return this.get(path);
  },

  /**
    @deprecated
    @method setPath
    @param {String} path The path to the property that will be set
    @param {Object} value The value to set or null.
    @return {Ember.Observable}
  */
  setPath: function(path, value) {
    Ember.deprecate("setPath is deprecated since set now supports paths");
    return this.set(path, value);
  },

  /**
    Retrieves the value of a property, or a default value in the case that the property
    returns undefined.

        person.getWithDefault('lastName', 'Doe');

    @method getWithDefault
    @param {String} keyName The name of the property to retrieve
    @param {Object} defaultValue The value to return if the property value is undefined
    @return {Object} The property value or the defaultValue.
  */
  getWithDefault: function(keyName, defaultValue) {
    return Ember.getWithDefault(this, keyName, defaultValue);
  },

  /**
    Set the value of a property to the current value plus some amount.

        person.incrementProperty('age');
        team.incrementProperty('score', 2);

    @method incrementProperty
    @param {String} keyName The name of the property to increment
    @param {Object} increment The amount to increment by. Defaults to 1
    @return {Object} The new property value
  */
  incrementProperty: function(keyName, increment) {
    if (!increment) { increment = 1; }
    set(this, keyName, (get(this, keyName) || 0)+increment);
    return get(this, keyName);
  },

  /**
    Set the value of a property to the current value minus some amount.

        player.decrementProperty('lives');
        orc.decrementProperty('health', 5);

    @method decrementProperty
    @param {String} keyName The name of the property to decrement
    @param {Object} increment The amount to decrement by. Defaults to 1
    @return {Object} The new property value
  */
  decrementProperty: function(keyName, increment) {
    if (!increment) { increment = 1; }
    set(this, keyName, (get(this, keyName) || 0)-increment);
    return get(this, keyName);
  },

  /**
    Set the value of a boolean property to the opposite of it's
    current value.

        starship.toggleProperty('warpDriveEnaged');

    @method toggleProperty
    @param {String} keyName The name of the property to toggle
    @return {Object} The new property value
  */
  toggleProperty: function(keyName) {
    set(this, keyName, !get(this, keyName));
    return get(this, keyName);
  },

  /**
    Returns the cached value of a computed property, if it exists.
    This allows you to inspect the value of a computed property
    without accidentally invoking it if it is intended to be
    generated lazily.

    @method cacheFor
    @param {String} keyName
    @return {Object} The cached value of the computed property, if any
  */
  cacheFor: function(keyName) {
    return Ember.cacheFor(this, keyName);
  },

  // intended for debugging purposes
  observersForKey: function(keyName) {
    return Ember.observersFor(this, keyName);
  }
});


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get, set = Ember.set;

/**
@class TargetActionSupport
@namespace Ember
@extends Ember.Mixin
*/
Ember.TargetActionSupport = Ember.Mixin.create({
  target: null,
  action: null,

  targetObject: Ember.computed(function() {
    var target = get(this, 'target');

    if (Ember.typeOf(target) === "string") {
      var value = get(this, target);
      if (value === undefined) { value = get(Ember.lookup, target); }
      return value;
    } else {
      return target;
    }
  }).property('target'),

  triggerAction: function() {
    var action = get(this, 'action'),
        target = get(this, 'targetObject');

    if (target && action) {
      var ret;

      if (typeof target.send === 'function') {
        ret = target.send(action, this);
      } else {
        if (typeof action === 'string') {
          action = target[action];
        }
        ret = action.call(target, this);
      }
      if (ret !== false) ret = true;

      return ret;
    } else {
      return false;
    }
  }
});

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

/**
  @class Evented
  @namespace Ember
  @extends Ember.Mixin
 */
Ember.Evented = Ember.Mixin.create({
  on: function(name, target, method) {
    Ember.addListener(this, name, target, method);
  },

  one: function(name, target, method) {
    if (!method) {
      method = target;
      target = null;
    }

    var self = this;
    var wrapped = function() {
      Ember.removeListener(self, name, target, method);

      if ('string' === typeof method) { method = this[method]; }

      // Internally, a `null` target means that the target is
      // the first parameter to addListener. That means that
      // the `this` passed into this function is the target
      // determined by the event system.
      method.apply(this, arguments);
    };

    Ember.addListener(this, name, target, wrapped, Ember.guidFor(method));
  },

  trigger: function(name) {
    var args = [], i, l;
    for (i = 1, l = arguments.length; i < l; i++) {
      args.push(arguments[i]);
    }
    Ember.sendEvent(this, name, args);
  },

  fire: function(name) {
    Ember.deprecate("Ember.Evented#fire() has been deprecated in favor of trigger() for compatibility with jQuery. It will be removed in 1.0. Please update your code to call trigger() instead.");
    this.trigger.apply(this, arguments);
  },

  off: function(name, target, method) {
    Ember.removeListener(this, name, target, method);
  },

  has: function(name) {
    return Ember.hasListeners(this, name);
  }
});

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get,
    slice = Array.prototype.slice;

/**
  @class Deferred
  @namespace Ember
  @extends Ember.Mixin
 */
Ember.Deferred = Ember.Mixin.create({

  /**
    Add handlers to be called when the Deferred object is resolved or rejected.

    @method then
    @param {Function} doneCallback a callback function to be called when done
    @param {Function} failCallback a callback function to be called when failed
  */
  then: function(doneCallback, failCallback) {
    return get(this, 'promise').then(doneCallback, failCallback);
  },

  /**
    Resolve a Deferred object and call any doneCallbacks with the given args.

    @method resolve
  */
  resolve: function(value) {
    get(this, 'promise').resolve(value);
  },

  /**
    Reject a Deferred object and call any failCallbacks with the given args.

    @method reject
  */
  reject: function(value) {
    get(this, 'promise').reject(value);
  },

  promise: Ember.computed(function() {
    return new RSVP.Promise();
  })
});

})();



(function() {

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/


// NOTE: this object should never be included directly.  Instead use Ember.
// Ember.Object.  We only define this separately so that Ember.Set can depend on it


var set = Ember.set, get = Ember.get,
    o_create = Ember.create,
    o_defineProperty = Ember.platform.defineProperty,
    a_slice = Array.prototype.slice,
    GUID_KEY = Ember.GUID_KEY,
    guidFor = Ember.guidFor,
    generateGuid = Ember.generateGuid,
    meta = Ember.meta,
    rewatch = Ember.rewatch,
    finishChains = Ember.finishChains,
    destroy = Ember.destroy,
    schedule = Ember.run.schedule,
    Mixin = Ember.Mixin,
    applyMixin = Mixin._apply,
    finishPartial = Mixin.finishPartial,
    reopen = Mixin.prototype.reopen,
    classToString = Mixin.prototype.toString;

var undefinedDescriptor = {
  configurable: true,
  writable: true,
  enumerable: false,
  value: undefined
};

function makeCtor() {

  // Note: avoid accessing any properties on the object since it makes the
  // method a lot faster.  This is glue code so we want it to be as fast as
  // possible.

  var wasApplied = false, initMixins;

  var Class = function() {
    if (!wasApplied) {
      Class.proto(); // prepare prototype...
    }
    o_defineProperty(this, GUID_KEY, undefinedDescriptor);
    o_defineProperty(this, '_super', undefinedDescriptor);
    var m = meta(this);
    m.proto = this;
    if (initMixins) {
      this.reopen.apply(this, initMixins);
      initMixins = null;
    }
    finishPartial(this, m);
    delete m.proto;
    finishChains(this);
    this.init.apply(this, arguments);
  };

  Class.toString = classToString;
  Class.willReopen = function() {
    if (wasApplied) {
      Class.PrototypeMixin = Mixin.create(Class.PrototypeMixin);
    }

    wasApplied = false;
  };
  Class._initMixins = function(args) { initMixins = args; };

  Class.proto = function() {
    var superclass = Class.superclass;
    if (superclass) { superclass.proto(); }

    if (!wasApplied) {
      wasApplied = true;
      Class.PrototypeMixin.applyPartial(Class.prototype);
      rewatch(Class.prototype);
    }

    return this.prototype;
  };

  return Class;

}

var CoreObject = makeCtor();

CoreObject.PrototypeMixin = Mixin.create({

  reopen: function() {
    applyMixin(this, arguments, true);
    return this;
  },

  isInstance: true,

  init: function() {},

  /**
    @property isDestroyed
    @default false
  */
  isDestroyed: false,

  /**
    @property isDestroying
    @default false
  */
  isDestroying: false,

  /**
    Destroys an object by setting the isDestroyed flag and removing its
    metadata, which effectively destroys observers and bindings.

    If you try to set a property on a destroyed object, an exception will be
    raised.

    Note that destruction is scheduled for the end of the run loop and does not
    happen immediately.

    @method destroy
    @return {Ember.Object} receiver
  */
  destroy: function() {
    if (this.isDestroying) { return; }

    this.isDestroying = true;

    if (this.willDestroy) { this.willDestroy(); }

    set(this, 'isDestroyed', true);
    schedule('destroy', this, this._scheduledDestroy);
    return this;
  },

  /**
    @private

    Invoked by the run loop to actually destroy the object. This is
    scheduled for execution by the `destroy` method.

    @method _scheduledDestroy
  */
  _scheduledDestroy: function() {
    destroy(this);
    if (this.didDestroy) { this.didDestroy(); }
  },

  bind: function(to, from) {
    if (!(from instanceof Ember.Binding)) { from = Ember.Binding.from(from); }
    from.to(to).connect(this);
    return from;
  },

  toString: function() {
    return '<'+this.constructor.toString()+':'+guidFor(this)+'>';
  }
});

if (Ember.config.overridePrototypeMixin) {
  Ember.config.overridePrototypeMixin(CoreObject.PrototypeMixin);
}

CoreObject.__super__ = null;

var ClassMixin = Mixin.create({

  ClassMixin: Ember.required(),

  PrototypeMixin: Ember.required(),

  isClass: true,

  isMethod: false,

  extend: function() {
    var Class = makeCtor(), proto;
    Class.ClassMixin = Mixin.create(this.ClassMixin);
    Class.PrototypeMixin = Mixin.create(this.PrototypeMixin);

    Class.ClassMixin.ownerConstructor = Class;
    Class.PrototypeMixin.ownerConstructor = Class;

    reopen.apply(Class.PrototypeMixin, arguments);

    Class.superclass = this;
    Class.__super__  = this.prototype;

    proto = Class.prototype = o_create(this.prototype);
    proto.constructor = Class;
    generateGuid(proto, 'ember');
    meta(proto).proto = proto; // this will disable observers on prototype

    Class.ClassMixin.apply(Class);
    return Class;
  },

  create: function() {
    var C = this;
    if (arguments.length>0) { this._initMixins(arguments); }
    return new C();
  },

  reopen: function() {
    this.willReopen();
    reopen.apply(this.PrototypeMixin, arguments);
    return this;
  },

  reopenClass: function() {
    reopen.apply(this.ClassMixin, arguments);
    applyMixin(this, arguments, false);
    return this;
  },

  detect: function(obj) {
    if ('function' !== typeof obj) { return false; }
    while(obj) {
      if (obj===this) { return true; }
      obj = obj.superclass;
    }
    return false;
  },

  detectInstance: function(obj) {
    return obj instanceof this;
  },

  /**
    In some cases, you may want to annotate computed properties with additional
    metadata about how they function or what values they operate on. For example,
    computed property functions may close over variables that are then no longer
    available for introspection.

    You can pass a hash of these values to a computed property like this:

        person: function() {
          var personId = this.get('personId');
          return App.Person.create({ id: personId });
        }.property().meta({ type: App.Person })

    Once you've done this, you can retrieve the values saved to the computed
    property from your class like this:

        MyClass.metaForProperty('person');

    This will return the original hash that was passed to `meta()`.

    @method metaForProperty
    @param key {String} property name
  */
  metaForProperty: function(key) {
    var desc = meta(this.proto(), false).descs[key];

    Ember.assert("metaForProperty() could not find a computed property with key '"+key+"'.", !!desc && desc instanceof Ember.ComputedProperty);
    return desc._meta || {};
  },

  /**
    Iterate over each computed property for the class, passing its name
    and any associated metadata (see `metaForProperty`) to the callback.

    @method eachComputedProperty
    @param {Function} callback
    @param {Object} binding
  */
  eachComputedProperty: function(callback, binding) {
    var proto = this.proto(),
        descs = meta(proto).descs,
        empty = {},
        property;

    for (var name in descs) {
      property = descs[name];

      if (property instanceof Ember.ComputedProperty) {
        callback.call(binding || this, name, property._meta || empty);
      }
    }
  }

});

if (Ember.config.overrideClassMixin) {
  Ember.config.overrideClassMixin(ClassMixin);
}

CoreObject.ClassMixin = ClassMixin;
ClassMixin.apply(CoreObject);

/**
  @class CoreObject
  @namespace Ember
*/
Ember.CoreObject = CoreObject;




})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get, set = Ember.set, guidFor = Ember.guidFor, none = Ember.none;

/**
  An unordered collection of objects.

  A Set works a bit like an array except that its items are not ordered.
  You can create a set to efficiently test for membership for an object. You
  can also iterate through a set just like an array, even accessing objects
  by index, however there is no guarantee as to their order.

  All Sets are observable via the Enumerable Observer API - which works
  on any enumerable object including both Sets and Arrays.

  ## Creating a Set

  You can create a set like you would most objects using
  `new Ember.Set()`.  Most new sets you create will be empty, but you can
  also initialize the set with some content by passing an array or other
  enumerable of objects to the constructor.

  Finally, you can pass in an existing set and the set will be copied. You
  can also create a copy of a set by calling `Ember.Set#copy()`.

      #js
      // creates a new empty set
      var foundNames = new Ember.Set();

      // creates a set with four names in it.
      var names = new Ember.Set(["Charles", "Tom", "Juan", "Alex"]); // :P

      // creates a copy of the names set.
      var namesCopy = new Ember.Set(names);

      // same as above.
      var anotherNamesCopy = names.copy();

  ## Adding/Removing Objects

  You generally add or remove objects from a set using `add()` or
  `remove()`. You can add any type of object including primitives such as
  numbers, strings, and booleans.

  Unlike arrays, objects can only exist one time in a set. If you call `add()`
  on a set with the same object multiple times, the object will only be added
  once. Likewise, calling `remove()` with the same object multiple times will
  remove the object the first time and have no effect on future calls until
  you add the object to the set again.

  NOTE: You cannot add/remove null or undefined to a set. Any attempt to do so
  will be ignored.

  In addition to add/remove you can also call `push()`/`pop()`. Push behaves
  just like `add()` but `pop()`, unlike `remove()` will pick an arbitrary
  object, remove it and return it. This is a good way to use a set as a job
  queue when you don't care which order the jobs are executed in.

  ## Testing for an Object

  To test for an object's presence in a set you simply call
  `Ember.Set#contains()`.

  ## Observing changes

  When using `Ember.Set`, you can observe the `"[]"` property to be
  alerted whenever the content changes.  You can also add an enumerable
  observer to the set to be notified of specific objects that are added and
  removed from the set.  See `Ember.Enumerable` for more information on
  enumerables.

  This is often unhelpful. If you are filtering sets of objects, for instance,
  it is very inefficient to re-filter all of the items each time the set
  changes. It would be better if you could just adjust the filtered set based
  on what was changed on the original set. The same issue applies to merging
  sets, as well.

  ## Other Methods

  `Ember.Set` primary implements other mixin APIs.  For a complete reference
  on the methods you will use with `Ember.Set`, please consult these mixins.
  The most useful ones will be `Ember.Enumerable` and
  `Ember.MutableEnumerable` which implement most of the common iterator
  methods you are used to on Array.

  Note that you can also use the `Ember.Copyable` and `Ember.Freezable`
  APIs on `Ember.Set` as well.  Once a set is frozen it can no longer be
  modified.  The benefit of this is that when you call frozenCopy() on it,
  Ember will avoid making copies of the set.  This allows you to write
  code that can know with certainty when the underlying set data will or
  will not be modified.

  @class Set
  @namespace Ember
  @extends Ember.CoreObject
  @uses Ember.MutableEnumerable
  @uses Ember.Copyable
  @uses Ember.Freezable
  @since Ember 0.9
*/
Ember.Set = Ember.CoreObject.extend(Ember.MutableEnumerable, Ember.Copyable, Ember.Freezable,
  /** @scope Ember.Set.prototype */ {

  // ..........................................................
  // IMPLEMENT ENUMERABLE APIS
  //

  /**
    This property will change as the number of objects in the set changes.

    @property length
    @type number
    @default 0
  */
  length: 0,

  /**
    Clears the set. This is useful if you want to reuse an existing set
    without having to recreate it.

        var colors = new Ember.Set(["red", "green", "blue"]);
        colors.length;  => 3
        colors.clear();
        colors.length;  => 0

    @method clear
    @return {Ember.Set} An empty Set
  */
  clear: function() {
    if (this.isFrozen) { throw new Error(Ember.FROZEN_ERROR); }

    var len = get(this, 'length');
    if (len === 0) { return this; }

    var guid;

    this.enumerableContentWillChange(len, 0);
    Ember.propertyWillChange(this, 'firstObject');
    Ember.propertyWillChange(this, 'lastObject');

    for (var i=0; i < len; i++){
      guid = guidFor(this[i]);
      delete this[guid];
      delete this[i];
    }

    set(this, 'length', 0);

    Ember.propertyDidChange(this, 'firstObject');
    Ember.propertyDidChange(this, 'lastObject');
    this.enumerableContentDidChange(len, 0);

    return this;
  },

  /**
    Returns true if the passed object is also an enumerable that contains the
    same objects as the receiver.

        var colors = ["red", "green", "blue"],
            same_colors = new Ember.Set(colors);
        same_colors.isEqual(colors); => true
        same_colors.isEqual(["purple", "brown"]); => false

    @method isEqual
    @param {Ember.Set} obj the other object.
    @return {Boolean}
  */
  isEqual: function(obj) {
    // fail fast
    if (!Ember.Enumerable.detect(obj)) return false;

    var loc = get(this, 'length');
    if (get(obj, 'length') !== loc) return false;

    while(--loc >= 0) {
      if (!obj.contains(this[loc])) return false;
    }

    return true;
  },

  /**
    Adds an object to the set. Only non-null objects can be added to a set
    and those can only be added once. If the object is already in the set or
    the passed value is null this method will have no effect.

    This is an alias for `Ember.MutableEnumerable.addObject()`.

        var colors = new Ember.Set();
        colors.add("blue");    => ["blue"]
        colors.add("blue");    => ["blue"]
        colors.add("red");     => ["blue", "red"]
        colors.add(null);      => ["blue", "red"]
        colors.add(undefined); => ["blue", "red"]

    @method add
    @param {Object} obj The object to add.
    @return {Ember.Set} The set itself.
  */
  add: Ember.alias('addObject'),

  /**
    Removes the object from the set if it is found.  If you pass a null value
    or an object that is already not in the set, this method will have no
    effect. This is an alias for `Ember.MutableEnumerable.removeObject()`.

        var colors = new Ember.Set(["red", "green", "blue"]);
        colors.remove("red");    => ["blue", "green"]
        colors.remove("purple"); => ["blue", "green"]
        colors.remove(null);     => ["blue", "green"]

    @method remove
    @param {Object} obj The object to remove
    @return {Ember.Set} The set itself.
  */
  remove: Ember.alias('removeObject'),

  /**
    Removes the last element from the set and returns it, or null if it's empty.

        var colors = new Ember.Set(["green", "blue"]);
        colors.pop(); => "blue"
        colors.pop(); => "green"
        colors.pop(); => null

    @method pop
    @return {Object} The removed object from the set or null.
  */
  pop: function() {
    if (get(this, 'isFrozen')) throw new Error(Ember.FROZEN_ERROR);
    var obj = this.length > 0 ? this[this.length-1] : null;
    this.remove(obj);
    return obj;
  },

  /**
    Inserts the given object on to the end of the set. It returns
    the set itself.

    This is an alias for `Ember.MutableEnumerable.addObject()`.

        var colors = new Ember.Set();
        colors.push("red");   => ["red"]
        colors.push("green"); => ["red", "green"]
        colors.push("blue");  => ["red", "green", "blue"]

    @method push
    @return {Ember.Set} The set itself.
  */
  push: Ember.alias('addObject'),

  /**
    Removes the last element from the set and returns it, or null if it's empty.

    This is an alias for `Ember.Set.pop()`.

        var colors = new Ember.Set(["green", "blue"]);
        colors.shift(); => "blue"
        colors.shift(); => "green"
        colors.shift(); => null

    @method shift
    @return {Object} The removed object from the set or null.
  */
  shift: Ember.alias('pop'),

  /**
    Inserts the given object on to the end of the set. It returns
    the set itself.

    This is an alias of `Ember.Set.push()`

        var colors = new Ember.Set();
        colors.unshift("red");   => ["red"]
        colors.unshift("green"); => ["red", "green"]
        colors.unshift("blue");  => ["red", "green", "blue"]

    @method unshift
    @return {Ember.Set} The set itself.
  */
  unshift: Ember.alias('push'),

  /**
    Adds each object in the passed enumerable to the set.

    This is an alias of `Ember.MutableEnumerable.addObjects()`

        var colors = new Ember.Set();
        colors.addEach(["red", "green", "blue"]); => ["red", "green", "blue"]

    @method addEach
    @param {Ember.Enumerable} objects the objects to add.
    @return {Ember.Set} The set itself.
  */
  addEach: Ember.alias('addObjects'),

  /**
    Removes each object in the passed enumerable to the set.

    This is an alias of `Ember.MutableEnumerable.removeObjects()`

        var colors = new Ember.Set(["red", "green", "blue"]);
        colors.removeEach(["red", "blue"]); => ["green"]

    @method removeEach
    @param {Ember.Enumerable} objects the objects to remove.
    @return {Ember.Set} The set itself.
  */
  removeEach: Ember.alias('removeObjects'),

  // ..........................................................
  // PRIVATE ENUMERABLE SUPPORT
  //

  init: function(items) {
    this._super();
    if (items) this.addObjects(items);
  },

  // implement Ember.Enumerable
  nextObject: function(idx) {
    return this[idx];
  },

  // more optimized version
  firstObject: Ember.computed(function() {
    return this.length > 0 ? this[0] : undefined;
  }).property(),

  // more optimized version
  lastObject: Ember.computed(function() {
    return this.length > 0 ? this[this.length-1] : undefined;
  }).property(),

  // implements Ember.MutableEnumerable
  addObject: function(obj) {
    if (get(this, 'isFrozen')) throw new Error(Ember.FROZEN_ERROR);
    if (none(obj)) return this; // nothing to do

    var guid = guidFor(obj),
        idx  = this[guid],
        len  = get(this, 'length'),
        added ;

    if (idx>=0 && idx<len && (this[idx] === obj)) return this; // added

    added = [obj];

    this.enumerableContentWillChange(null, added);
    Ember.propertyWillChange(this, 'lastObject');

    len = get(this, 'length');
    this[guid] = len;
    this[len] = obj;
    set(this, 'length', len+1);

    Ember.propertyDidChange(this, 'lastObject');
    this.enumerableContentDidChange(null, added);

    return this;
  },

  // implements Ember.MutableEnumerable
  removeObject: function(obj) {
    if (get(this, 'isFrozen')) throw new Error(Ember.FROZEN_ERROR);
    if (none(obj)) return this; // nothing to do

    var guid = guidFor(obj),
        idx  = this[guid],
        len = get(this, 'length'),
        isFirst = idx === 0,
        isLast = idx === len-1,
        last, removed;


    if (idx>=0 && idx<len && (this[idx] === obj)) {
      removed = [obj];

      this.enumerableContentWillChange(removed, null);
      if (isFirst) { Ember.propertyWillChange(this, 'firstObject'); }
      if (isLast)  { Ember.propertyWillChange(this, 'lastObject'); }

      // swap items - basically move the item to the end so it can be removed
      if (idx < len-1) {
        last = this[len-1];
        this[idx] = last;
        this[guidFor(last)] = idx;
      }

      delete this[guid];
      delete this[len-1];
      set(this, 'length', len-1);

      if (isFirst) { Ember.propertyDidChange(this, 'firstObject'); }
      if (isLast)  { Ember.propertyDidChange(this, 'lastObject'); }
      this.enumerableContentDidChange(removed, null);
    }

    return this;
  },

  // optimized version
  contains: function(obj) {
    return this[guidFor(obj)]>=0;
  },

  copy: function() {
    var C = this.constructor, ret = new C(), loc = get(this, 'length');
    set(ret, 'length', loc);
    while(--loc>=0) {
      ret[loc] = this[loc];
      ret[guidFor(this[loc])] = loc;
    }
    return ret;
  },

  toString: function() {
    var len = this.length, idx, array = [];
    for(idx = 0; idx < len; idx++) {
      array[idx] = this[idx];
    }
    return "Ember.Set<%@>".fmt(array.join(','));
  }

});

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

/**
  `Ember.Object` is the main base class for all Ember objects. It is a subclass
  of `Ember.CoreObject` with the `Ember.Observable` mixin applied. For details,
  see the documentation for each of these.

  @class Object
  @namespace Ember
  @extends Ember.CoreObject
  @uses Ember.Observable
*/
Ember.Object = Ember.CoreObject.extend(Ember.Observable);

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var indexOf = Ember.ArrayPolyfills.indexOf;

/**
  A Namespace is an object usually used to contain other objects or methods
  such as an application or framework.  Create a namespace anytime you want
  to define one of these new containers.

  # Example Usage

      MyFramework = Ember.Namespace.create({
        VERSION: '1.0.0'
      });

  @class Namespace
  @namespace Ember
  @extends Ember.Object
*/
Ember.Namespace = Ember.Object.extend({
  isNamespace: true,

  init: function() {
    Ember.Namespace.NAMESPACES.push(this);
    Ember.Namespace.PROCESSED = false;
  },

  toString: function() {
    Ember.identifyNamespaces();
    return this[Ember.GUID_KEY+'_name'];
  },

  destroy: function() {
    var namespaces = Ember.Namespace.NAMESPACES;
    Ember.lookup[this.toString()] = undefined;
    namespaces.splice(indexOf.call(namespaces, this), 1);
    this._super();
  }
});

Ember.Namespace.NAMESPACES = [Ember];
Ember.Namespace.PROCESSED = false;

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

/**
  Defines a namespace that will contain an executable application.  This is
  very similar to a normal namespace except that it is expected to include at
  least a 'ready' function which can be run to initialize the application.

  Currently Ember.Application is very similar to Ember.Namespace.  However, this
  class may be augmented by additional frameworks so it is important to use
  this instance when building new applications.

  # Example Usage

      MyApp = Ember.Application.create({
        VERSION: '1.0.0',
        store: Ember.Store.create().from(Ember.fixtures)
      });

      MyApp.ready = function() {
        //..init code goes here...
      }

  @class Application
  @namespace Ember
  @extends Ember.Namespace
*/
Ember.Application = Ember.Namespace.extend();


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/


var get = Ember.get, set = Ember.set;

/**
  An ArrayProxy wraps any other object that implements Ember.Array and/or
  Ember.MutableArray, forwarding all requests. This makes it very useful for
  a number of binding use cases or other cases where being able to swap
  out the underlying array is useful.

  A simple example of usage:

      var pets = ['dog', 'cat', 'fish'];
      var ap = Ember.ArrayProxy.create({ content: Ember.A(pets) });
      ap.get('firstObject'); // => 'dog'
      ap.set('content', ['amoeba', 'paramecium']);
      ap.get('firstObject'); // => 'amoeba'

  This class can also be useful as a layer to transform the contents of
  an array, as they are accessed. This can be done by overriding
  `objectAtContent`:

      var pets = ['dog', 'cat', 'fish'];
      var ap = Ember.ArrayProxy.create({
          content: Ember.A(pets),
          objectAtContent: function(idx) {
              return this.get('content').objectAt(idx).toUpperCase();
          }
      });
      ap.get('firstObject'); // => 'DOG'


  @class ArrayProxy
  @namespace Ember
  @extends Ember.Object
  @uses Ember.MutableArray
*/
Ember.ArrayProxy = Ember.Object.extend(Ember.MutableArray,
/** @scope Ember.ArrayProxy.prototype */ {

  /**
    The content array.  Must be an object that implements Ember.Array and/or
    Ember.MutableArray.

    @property content
    @type Ember.Array
  */
  content: null,

  /**
   The array that the proxy pretends to be. In the default `ArrayProxy`
   implementation, this and `content` are the same. Subclasses of `ArrayProxy`
   can override this property to provide things like sorting and filtering.
   
   @property arrangedContent
  */
  arrangedContent: Ember.computed('content', function() {
    return get(this, 'content');
  }),

  /**
    Should actually retrieve the object at the specified index from the
    content. You can override this method in subclasses to transform the
    content item to something new.

    This method will only be called if content is non-null.

    @method objectAtContent
    @param {Number} idx The index to retrieve.
    @return {Object} the value or undefined if none found
  */
  objectAtContent: function(idx) {
    return get(this, 'arrangedContent').objectAt(idx);
  },

  /**
    Should actually replace the specified objects on the content array.
    You can override this method in subclasses to transform the content item
    into something new.

    This method will only be called if content is non-null.

    @method replaceContent
    @param {Number} idx The starting index
    @param {Number} amt The number of items to remove from the content.
    @param {Array} objects Optional array of objects to insert or null if no objects.
    @return {void}
  */
  replaceContent: function(idx, amt, objects) {
    get(this, 'arrangedContent').replace(idx, amt, objects);
  },

  /**
    @private

    Invoked when the content property is about to change. Notifies observers that the
    entire array content will change.

    @method _contentWillChange
  */
  _contentWillChange: Ember.beforeObserver(function() {
    this._teardownContent();
  }, 'content'),

  _teardownContent: function() {
    var content = get(this, 'content');

    if (content) {
      content.removeArrayObserver(this, {
        willChange: 'contentArrayWillChange',
        didChange: 'contentArrayDidChange'
      });
    }
  },

  contentArrayWillChange: Ember.K,
  contentArrayDidChange: Ember.K,

  /**
    @private

    Invoked when the content property changes.  Notifies observers that the
    entire array content has changed.

    @method _contentDidChange
  */
  _contentDidChange: Ember.observer(function() {
    var content = get(this, 'content');

    Ember.assert("Can't set ArrayProxy's content to itself", content !== this);

    this._setupContent();
  }, 'content'),

  _setupContent: function() {
    var content = get(this, 'content');

    if (content) {
      content.addArrayObserver(this, {
        willChange: 'contentArrayWillChange',
        didChange: 'contentArrayDidChange'
      });
    }
  },

  _arrangedContentWillChange: Ember.beforeObserver(function() {
    var arrangedContent = get(this, 'arrangedContent'),
        len = arrangedContent ? get(arrangedContent, 'length') : 0;

    this.arrangedContentArrayWillChange(this, 0, len, undefined);
    this.arrangedContentWillChange(this);

    this._teardownArrangedContent(arrangedContent);
  }, 'arrangedContent'),

  _arrangedContentDidChange: Ember.observer(function() {
    var arrangedContent = get(this, 'arrangedContent'),
        len = arrangedContent ? get(arrangedContent, 'length') : 0;

    Ember.assert("Can't set ArrayProxy's content to itself", arrangedContent !== this);

    this._setupArrangedContent();

    this.arrangedContentDidChange(this);
    this.arrangedContentArrayDidChange(this, 0, undefined, len);
  }, 'arrangedContent'),

  _setupArrangedContent: function() {
    var arrangedContent = get(this, 'arrangedContent');

    if (arrangedContent) {
      arrangedContent.addArrayObserver(this, {
        willChange: 'arrangedContentArrayWillChange',
        didChange: 'arrangedContentArrayDidChange'
      });
    }
  },

  _teardownArrangedContent: function() {
    var arrangedContent = get(this, 'arrangedContent');

    if (arrangedContent) {
      arrangedContent.removeArrayObserver(this, {
        willChange: 'arrangedContentArrayWillChange',
        didChange: 'arrangedContentArrayDidChange'
      });
    }
  },

  arrangedContentWillChange: Ember.K,
  arrangedContentDidChange: Ember.K,

  objectAt: function(idx) {
    return get(this, 'content') && this.objectAtContent(idx);
  },

  length: Ember.computed(function() {
    var arrangedContent = get(this, 'arrangedContent');
    return arrangedContent ? get(arrangedContent, 'length') : 0;
    // No dependencies since Enumerable notifies length of change
  }).property(),

  replace: function(idx, amt, objects) {
    Ember.assert('The content property of '+ this.constructor + ' should be set before modifying it', this.get('content'));
    if (get(this, 'content')) this.replaceContent(idx, amt, objects);
    return this;
  },

  arrangedContentArrayWillChange: function(item, idx, removedCnt, addedCnt) {
    this.arrayContentWillChange(idx, removedCnt, addedCnt);
  },

  arrangedContentArrayDidChange: function(item, idx, removedCnt, addedCnt) {
    this.arrayContentDidChange(idx, removedCnt, addedCnt);
  },

  init: function() {
    this._super();
    this._setupContent();
    this._setupArrangedContent();
  },

  willDestroy: function() {
    this._teardownArrangedContent();
    this._teardownContent();
  }
});


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get,
    set = Ember.set,
    fmt = Ember.String.fmt,
    addBeforeObserver = Ember.addBeforeObserver,
    addObserver = Ember.addObserver,
    removeBeforeObserver = Ember.removeBeforeObserver,
    removeObserver = Ember.removeObserver,
    propertyWillChange = Ember.propertyWillChange,
    propertyDidChange = Ember.propertyDidChange;

function contentPropertyWillChange(content, contentKey) {
  var key = contentKey.slice(8); // remove "content."
  if (key in this) { return; }  // if shadowed in proxy
  propertyWillChange(this, key);
}

function contentPropertyDidChange(content, contentKey) {
  var key = contentKey.slice(8); // remove "content."
  if (key in this) { return; } // if shadowed in proxy
  propertyDidChange(this, key);
}

/**
  `Ember.ObjectProxy` forwards all properties not defined by the proxy itself
  to a proxied `content` object.

      object = Ember.Object.create({
        name: 'Foo'
      });
      proxy = Ember.ObjectProxy.create({
        content: object
      });

      // Access and change existing properties
      proxy.get('name') // => 'Foo'
      proxy.set('name', 'Bar');
      object.get('name') // => 'Bar'

      // Create new 'description' property on `object`
      proxy.set('description', 'Foo is a whizboo baz');
      object.get('description') // => 'Foo is a whizboo baz'

  While `content` is unset, setting a property to be delegated will throw an Error.

      proxy = Ember.ObjectProxy.create({
        content: null,
        flag: null
      });
      proxy.set('flag', true);
      proxy.get('flag'); // => true
      proxy.get('foo'); // => undefined
      proxy.set('foo', 'data'); // throws Error

  Delegated properties can be bound to and will change when content is updated.

  Computed properties on the proxy itself can depend on delegated properties.

      ProxyWithComputedProperty = Ember.ObjectProxy.extend({
        fullName: function () {
          var firstName = this.get('firstName'),
              lastName = this.get('lastName');
          if (firstName && lastName) {
            return firstName + ' ' + lastName;
          }
          return firstName || lastName;
        }.property('firstName', 'lastName')
      });
      proxy = ProxyWithComputedProperty.create();
      proxy.get('fullName'); => undefined
      proxy.set('content', {
        firstName: 'Tom', lastName: 'Dale'
      }); // triggers property change for fullName on proxy
      proxy.get('fullName'); => 'Tom Dale'

  @class ObjectProxy
  @namespace Ember
  @extends Ember.Object
*/
Ember.ObjectProxy = Ember.Object.extend(
/** @scope Ember.ObjectProxy.prototype */ {
  /**
    The object whose properties will be forwarded.

    @property content
    @type Ember.Object
    @default null
  */
  content: null,
  _contentDidChange: Ember.observer(function() {
    Ember.assert("Can't set ObjectProxy's content to itself", this.get('content') !== this);
  }, 'content'),

  willWatchProperty: function (key) {
    var contentKey = 'content.' + key;
    addBeforeObserver(this, contentKey, null, contentPropertyWillChange);
    addObserver(this, contentKey, null, contentPropertyDidChange);
  },

  didUnwatchProperty: function (key) {
    var contentKey = 'content.' + key;
    removeBeforeObserver(this, contentKey, null, contentPropertyWillChange);
    removeObserver(this, contentKey, null, contentPropertyDidChange);
  },

  unknownProperty: function (key) {
    var content = get(this, 'content');
    if (content) {
      return get(content, key);
    }
  },

  setUnknownProperty: function (key, value) {
    var content = get(this, 'content');
    Ember.assert(fmt("Cannot delegate set('%@', %@) to the 'content' property of object proxy %@: its 'content' is undefined.", [key, value, this]), content);
    return set(content, key, value);
  }
});

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/


var set = Ember.set, get = Ember.get, guidFor = Ember.guidFor;
var forEach = Ember.EnumerableUtils.forEach;

var EachArray = Ember.Object.extend(Ember.Array, {

  init: function(content, keyName, owner) {
    this._super();
    this._keyName = keyName;
    this._owner   = owner;
    this._content = content;
  },

  objectAt: function(idx) {
    var item = this._content.objectAt(idx);
    return item && get(item, this._keyName);
  },

  length: Ember.computed(function() {
    var content = this._content;
    return content ? get(content, 'length') : 0;
  }).property()

});

var IS_OBSERVER = /^.+:(before|change)$/;

function addObserverForContentKey(content, keyName, proxy, idx, loc) {
  var objects = proxy._objects, guid;
  if (!objects) objects = proxy._objects = {};

  while(--loc>=idx) {
    var item = content.objectAt(loc);
    if (item) {
      Ember.addBeforeObserver(item, keyName, proxy, 'contentKeyWillChange');
      Ember.addObserver(item, keyName, proxy, 'contentKeyDidChange');

      // keep track of the indicies each item was found at so we can map
      // it back when the obj changes.
      guid = guidFor(item);
      if (!objects[guid]) objects[guid] = [];
      objects[guid].push(loc);
    }
  }
}

function removeObserverForContentKey(content, keyName, proxy, idx, loc) {
  var objects = proxy._objects;
  if (!objects) objects = proxy._objects = {};
  var indicies, guid;

  while(--loc>=idx) {
    var item = content.objectAt(loc);
    if (item) {
      Ember.removeBeforeObserver(item, keyName, proxy, 'contentKeyWillChange');
      Ember.removeObserver(item, keyName, proxy, 'contentKeyDidChange');

      guid = guidFor(item);
      indicies = objects[guid];
      indicies[indicies.indexOf(loc)] = null;
    }
  }
}

/**
  This is the object instance returned when you get the @each property on an
  array.  It uses the unknownProperty handler to automatically create
  EachArray instances for property names.

  @private
  @class EachProxy
  @namespace Ember
  @extends Ember.Object
*/
Ember.EachProxy = Ember.Object.extend({

  init: function(content) {
    this._super();
    this._content = content;
    content.addArrayObserver(this);

    // in case someone is already observing some keys make sure they are
    // added
    forEach(Ember.watchedEvents(this), function(eventName) {
      this.didAddListener(eventName);
    }, this);
  },

  /**
    You can directly access mapped properties by simply requesting them.
    The unknownProperty handler will generate an EachArray of each item.

    @method unknownProperty
    @param keyName {String}
    @param value {anything}
  */
  unknownProperty: function(keyName, value) {
    var ret;
    ret = new EachArray(this._content, keyName, this);
    Ember.defineProperty(this, keyName, null, ret);
    this.beginObservingContentKey(keyName);
    return ret;
  },

  // ..........................................................
  // ARRAY CHANGES
  // Invokes whenever the content array itself changes.

  arrayWillChange: function(content, idx, removedCnt, addedCnt) {
    var keys = this._keys, key, array, lim;

    lim = removedCnt>0 ? idx+removedCnt : -1;
    Ember.beginPropertyChanges(this);

    for(key in keys) {
      if (!keys.hasOwnProperty(key)) { continue; }

      if (lim>0) removeObserverForContentKey(content, key, this, idx, lim);

      Ember.propertyWillChange(this, key);
    }

    Ember.propertyWillChange(this._content, '@each');
    Ember.endPropertyChanges(this);
  },

  arrayDidChange: function(content, idx, removedCnt, addedCnt) {
    var keys = this._keys, key, array, lim;

    lim = addedCnt>0 ? idx+addedCnt : -1;
    Ember.beginPropertyChanges(this);

    for(key in keys) {
      if (!keys.hasOwnProperty(key)) { continue; }

      if (lim>0) addObserverForContentKey(content, key, this, idx, lim);

      Ember.propertyDidChange(this, key);
    }

    Ember.propertyDidChange(this._content, '@each');
    Ember.endPropertyChanges(this);
  },

  // ..........................................................
  // LISTEN FOR NEW OBSERVERS AND OTHER EVENT LISTENERS
  // Start monitoring keys based on who is listening...

  didAddListener: function(eventName) {
    if (IS_OBSERVER.test(eventName)) {
      this.beginObservingContentKey(eventName.slice(0, -7));
    }
  },

  didRemoveListener: function(eventName) {
    if (IS_OBSERVER.test(eventName)) {
      this.stopObservingContentKey(eventName.slice(0, -7));
    }
  },

  // ..........................................................
  // CONTENT KEY OBSERVING
  // Actual watch keys on the source content.

  beginObservingContentKey: function(keyName) {
    var keys = this._keys;
    if (!keys) keys = this._keys = {};
    if (!keys[keyName]) {
      keys[keyName] = 1;
      var content = this._content,
          len = get(content, 'length');
      addObserverForContentKey(content, keyName, this, 0, len);
    } else {
      keys[keyName]++;
    }
  },

  stopObservingContentKey: function(keyName) {
    var keys = this._keys;
    if (keys && (keys[keyName]>0) && (--keys[keyName]<=0)) {
      var content = this._content,
          len     = get(content, 'length');
      removeObserverForContentKey(content, keyName, this, 0, len);
    }
  },

  contentKeyWillChange: function(obj, keyName) {
    Ember.propertyWillChange(this, keyName);
  },

  contentKeyDidChange: function(obj, keyName) {
    Ember.propertyDidChange(this, keyName);
  }

});



})();



(function() {
/**
@module ember
@submodule ember-runtime
*/


var get = Ember.get, set = Ember.set;

// Add Ember.Array to Array.prototype.  Remove methods with native
// implementations and supply some more optimized versions of generic methods
// because they are so common.
var NativeArray = Ember.Mixin.create(Ember.MutableArray, Ember.Observable, Ember.Copyable, {

  // because length is a built-in property we need to know to just get the
  // original property.
  get: function(key) {
    if (key==='length') return this.length;
    else if ('number' === typeof key) return this[key];
    else return this._super(key);
  },

  objectAt: function(idx) {
    return this[idx];
  },

  // primitive for array support.
  replace: function(idx, amt, objects) {

    if (this.isFrozen) throw Ember.FROZEN_ERROR ;

    // if we replaced exactly the same number of items, then pass only the
    // replaced range.  Otherwise, pass the full remaining array length
    // since everything has shifted
    var len = objects ? get(objects, 'length') : 0;
    this.arrayContentWillChange(idx, amt, len);

    if (!objects || objects.length === 0) {
      this.splice(idx, amt) ;
    } else {
      var args = [idx, amt].concat(objects) ;
      this.splice.apply(this,args) ;
    }

    this.arrayContentDidChange(idx, amt, len);
    return this ;
  },

  // If you ask for an unknown property, then try to collect the value
  // from member items.
  unknownProperty: function(key, value) {
    var ret;// = this.reducedProperty(key, value) ;
    if ((value !== undefined) && ret === undefined) {
      ret = this[key] = value;
    }
    return ret ;
  },

  // If browser did not implement indexOf natively, then override with
  // specialized version
  indexOf: function(object, startAt) {
    var idx, len = this.length;

    if (startAt === undefined) startAt = 0;
    else startAt = (startAt < 0) ? Math.ceil(startAt) : Math.floor(startAt);
    if (startAt < 0) startAt += len;

    for(idx=startAt;idx<len;idx++) {
      if (this[idx] === object) return idx ;
    }
    return -1;
  },

  lastIndexOf: function(object, startAt) {
    var idx, len = this.length;

    if (startAt === undefined) startAt = len-1;
    else startAt = (startAt < 0) ? Math.ceil(startAt) : Math.floor(startAt);
    if (startAt < 0) startAt += len;

    for(idx=startAt;idx>=0;idx--) {
      if (this[idx] === object) return idx ;
    }
    return -1;
  },

  copy: function() {
    return this.slice();
  }
});

// Remove any methods implemented natively so we don't override them
var ignore = ['length'];
Ember.EnumerableUtils.forEach(NativeArray.keys(), function(methodName) {
  if (Array.prototype[methodName]) ignore.push(methodName);
});

if (ignore.length>0) {
  NativeArray = NativeArray.without.apply(NativeArray, ignore);
}

/**
  The NativeArray mixin contains the properties needed to to make the native
  Array support Ember.MutableArray and all of its dependent APIs.  Unless you
  have Ember.EXTEND_PROTOTYPES or Ember.EXTEND_PROTOTYPES.Array set to false, this
  will be applied automatically. Otherwise you can apply the mixin at anytime by
  calling `Ember.NativeArray.activate`.

  @class NativeArray
  @namespace Ember
  @extends Ember.Mixin
  @uses Ember.MutableArray
  @uses Ember.MutableEnumerable
  @uses Ember.Copyable
  @uses Ember.Freezable
*/
Ember.NativeArray = NativeArray;

/**
  Creates an Ember.NativeArray from an Array like object.
  Does not modify the original object.

  @method A
  @for Ember
  @return {Ember.NativeArray}
*/
Ember.A = function(arr){
  if (arr === undefined) { arr = []; }
  return Ember.NativeArray.apply(arr);
};

/**
  Activates the mixin on the Array.prototype if not already applied.  Calling
  this method more than once is safe.

  @method activate
  @for Ember.NativeArray
  @static
  @return {void}
*/
Ember.NativeArray.activate = function() {
  NativeArray.apply(Array.prototype);

  Ember.A = function(arr) { return arr || []; };
};

if (Ember.EXTEND_PROTOTYPES === true || Ember.EXTEND_PROTOTYPES.Array) {
  Ember.NativeArray.activate();
}


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get, set = Ember.set;

Ember._PromiseChain = Ember.Object.extend({
  promises: null,
  failureCallback: Ember.K,
  successCallback: Ember.K,
  abortCallback: Ember.K,
  promiseSuccessCallback: Ember.K,

  runNextPromise: function() {
    if (get(this, 'isDestroyed')) { return; }

    var item = get(this, 'promises').shiftObject();
    if (item) {
      var promise = get(item, 'promise') || item;
      Ember.assert("Cannot find promise to invoke", Ember.canInvoke(promise, 'then'));

      var self = this;

      var successCallback = function() {
        self.promiseSuccessCallback.call(this, item, arguments);
        self.runNextPromise();
      };

      var failureCallback = get(self, 'failureCallback');

      promise.then(successCallback, failureCallback);
     } else {
      this.successCallback();
    }
  },

  start: function() {
    this.runNextPromise();
    return this;
  },

  abort: function() {
    this.abortCallback();
    this.destroy();
  },

  init: function() {
    set(this, 'promises', Ember.A(get(this, 'promises')));
    this._super();
  }
});


})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var loadHooks = {};
var loaded = {};

/**
@method onLoad
@for Ember
@param name {String} name of hook
@param callback {Function} callback to be called
*/
Ember.onLoad = function(name, callback) {
  var object;

  loadHooks[name] = loadHooks[name] || Ember.A();
  loadHooks[name].pushObject(callback);

  if (object = loaded[name]) {
    callback(object);
  }
};

/**
@method runLoadHooks
@for Ember
@param name {String} name of hook
@param object {Object} object to pass to callbacks
*/
Ember.runLoadHooks = function(name, object) {
  var hooks;

  loaded[name] = object;

  if (hooks = loadHooks[name]) {
    loadHooks[name].forEach(function(callback) {
      callback(object);
    });
  }
};

})();



(function() {

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

/**
  Ember.ControllerMixin provides a standard interface for all classes
  that compose Ember's controller layer: Ember.Controller, Ember.ArrayController,
  and Ember.ObjectController.

  Within an Ember.Router-managed application single shared instaces of every
  Controller object in your application's namespace will be added to the
  application's Ember.Router instance. See `Ember.Application#initialize`
  for additional information.

  ## Views
  By default a controller instance will be the rendering context
  for its associated Ember.View. This connection is made during calls to
  `Ember.ControllerMixin#connectOutlet`.

  Within the view's template, the Ember.View instance can be accessed
  through the controller with `{{view}}`.

  ## Target Forwarding
  By default a controller will target your application's Ember.Router instance.
  Calls to `{{action}}` within the template of a controller's view are forwarded
  to the router. See `Ember.Handlebars.helpers.action` for additional information.

  @class ControllerMixin
  @namespace Ember
  @extends Ember.Mixin
*/
Ember.ControllerMixin = Ember.Mixin.create({
  /**
    The object to which events from the view should be sent.

    For example, when a Handlebars template uses the `{{action}}` helper,
    it will attempt to send the event to the view's controller's `target`.

    By default, a controller's `target` is set to the router after it is
    instantiated by `Ember.Application#initialize`.

    @property target
    @default null
  */
  target: null,

  store: null
});

/**
  @class Controller
  @namespace Ember
  @extends Ember.Object
  @uses Ember.ControllerMixin
*/
Ember.Controller = Ember.Object.extend(Ember.ControllerMixin);

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get, set = Ember.set, forEach = Ember.EnumerableUtils.forEach;

/**
  Ember.SortableMixin provides a standard interface for array proxies
  to specify a sort order and maintain this sorting when objects are added,
  removed, or updated without changing the implicit order of their underlying
  content array:

      songs = [
        {trackNumber: 4, title: 'Ob-La-Di, Ob-La-Da'},
        {trackNumber: 2, title: 'Back in the U.S.S.R.'},
        {trackNumber: 3, title: 'Glass Onion'},
      ];

      songsController = Ember.ArrayController.create({
        content: songs,
        sortProperties: ['trackNumber']
      });

      songsController.get('firstObject'); // {trackNumber: 2, title: 'Back in the U.S.S.R.'}

      songsController.addObject({trackNumber: 1, title: 'Dear Prudence'});
      songsController.get('firstObject'); // {trackNumber: 1, title: 'Dear Prudence'}


  @class SortableMixin
  @namespace Ember
  @extends Ember.Mixin
  @uses Ember.MutableEnumerable
*/
Ember.SortableMixin = Ember.Mixin.create(Ember.MutableEnumerable, {
  sortProperties: null,
  sortAscending: true,

  addObject: function(obj) {
    var content = get(this, 'content');
    content.pushObject(obj);
  },

  removeObject: function(obj) {
    var content = get(this, 'content');
    content.removeObject(obj);
  },

  orderBy: function(item1, item2) {
    var result = 0,
        sortProperties = get(this, 'sortProperties'),
        sortAscending = get(this, 'sortAscending');

    Ember.assert("you need to define `sortProperties`", !!sortProperties);

    forEach(sortProperties, function(propertyName) {
      if (result === 0) {
        result = Ember.compare(get(item1, propertyName), get(item2, propertyName));
        if ((result !== 0) && !sortAscending) {
          result = (-1) * result;
        }
      }
    });

    return result;
  },

  destroy: function() {
    var content = get(this, 'content'),
        sortProperties = get(this, 'sortProperties');

    if (content && sortProperties) {
      forEach(content, function(item) {
        forEach(sortProperties, function(sortProperty) {
          Ember.removeObserver(item, sortProperty, this, 'contentItemSortPropertyDidChange');
        }, this);
      }, this);
    }

    return this._super();
  },

  isSorted: Ember.computed('sortProperties', function() {
    return !!get(this, 'sortProperties');
  }),

  arrangedContent: Ember.computed('content', 'sortProperties.@each', function(key, value) {
    var content = get(this, 'content'),
        isSorted = get(this, 'isSorted'),
        sortProperties = get(this, 'sortProperties'),
        self = this;

    if (content && isSorted) {
      content = content.slice();
      content.sort(function(item1, item2) {
        return self.orderBy(item1, item2);
      });
      forEach(content, function(item) {
        forEach(sortProperties, function(sortProperty) {
          Ember.addObserver(item, sortProperty, this, 'contentItemSortPropertyDidChange');
        }, this);
      }, this);
      return Ember.A(content);
    }

    return content;
  }),

  _contentWillChange: Ember.beforeObserver(function() {
    var content = get(this, 'content'),
        sortProperties = get(this, 'sortProperties');

    if (content && sortProperties) {
      forEach(content, function(item) {
        forEach(sortProperties, function(sortProperty) {
          Ember.removeObserver(item, sortProperty, this, 'contentItemSortPropertyDidChange');
        }, this);
      }, this);
    }

    this._super();
  }, 'content'),

  sortAscendingWillChange: Ember.beforeObserver(function() {
    this._lastSortAscending = get(this, 'sortAscending');
  }, 'sortAscending'),

  sortAscendingDidChange: Ember.observer(function() {
    if (get(this, 'sortAscending') !== this._lastSortAscending) {
      var arrangedContent = get(this, 'arrangedContent');
      arrangedContent.reverseObjects();
    }
  }, 'sortAscending'),

  contentArrayWillChange: function(array, idx, removedCount, addedCount) {
    var isSorted = get(this, 'isSorted');

    if (isSorted) {
      var arrangedContent = get(this, 'arrangedContent');
      var removedObjects = array.slice(idx, idx+removedCount);
      var sortProperties = get(this, 'sortProperties');

      forEach(removedObjects, function(item) {
        arrangedContent.removeObject(item);

        forEach(sortProperties, function(sortProperty) {
          Ember.removeObserver(item, sortProperty, this, 'contentItemSortPropertyDidChange');
        }, this);
      });
    }

    return this._super(array, idx, removedCount, addedCount);
  },

  contentArrayDidChange: function(array, idx, removedCount, addedCount) {
    var isSorted = get(this, 'isSorted'),
        sortProperties = get(this, 'sortProperties');

    if (isSorted) {
      var addedObjects = array.slice(idx, idx+addedCount);
      var arrangedContent = get(this, 'arrangedContent');

      forEach(addedObjects, function(item) {
        this.insertItemSorted(item);

        forEach(sortProperties, function(sortProperty) {
          Ember.addObserver(item, sortProperty, this, 'contentItemSortPropertyDidChange');
        }, this);
      }, this);
    }

    return this._super(array, idx, removedCount, addedCount);
  },

  insertItemSorted: function(item) {
    var arrangedContent = get(this, 'arrangedContent');
    var length = get(arrangedContent, 'length');

    var idx = this._binarySearch(item, 0, length);
    arrangedContent.insertAt(idx, item);
  },

  contentItemSortPropertyDidChange: function(item) {
    var arrangedContent = get(this, 'arrangedContent'),
        oldIndex = arrangedContent.indexOf(item),
        leftItem = arrangedContent.objectAt(oldIndex - 1),
        rightItem = arrangedContent.objectAt(oldIndex + 1),
        leftResult = leftItem && this.orderBy(item, leftItem),
        rightResult = rightItem && this.orderBy(item, rightItem);

    if (leftResult < 0 || rightResult > 0) {
      arrangedContent.removeObject(item);
      this.insertItemSorted(item);
    }
  },

  _binarySearch: function(item, low, high) {
    var mid, midItem, res, arrangedContent;

    if (low === high) {
      return low;
    }

    arrangedContent = get(this, 'arrangedContent');

    mid = low + Math.floor((high - low) / 2);
    midItem = arrangedContent.objectAt(mid);

    res = this.orderBy(midItem, item);

    if (res < 0) {
      return this._binarySearch(item, mid+1, high);
    } else if (res > 0) {
      return this._binarySearch(item, low, mid);
    }

    return mid;
  }
});

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

var get = Ember.get, set = Ember.set;

/**
  Ember.ArrayController provides a way for you to publish a collection of objects
  so that you can easily bind to the collection from a Handlebars #each helper,
  an Ember.CollectionView, or other controllers.

  The advantage of using an ArrayController is that you only have to set up
  your view bindings once; to change what's displayed, simply swap out the
  `content` property on the controller.

  For example, imagine you wanted to display a list of items fetched via an XHR
  request. Create an Ember.ArrayController and set its `content` property:

  ``` javascript
  MyApp.listController = Ember.ArrayController.create();

  $.get('people.json', function(data) {
    MyApp.listController.set('content', data);
  });
  ```

  Then, create a view that binds to your new controller:

  ``` handlebars
  {{#each MyApp.listController}}
    {{firstName}} {{lastName}}
  {{/each}}
  ```

  Although you are binding to the controller, the behavior of this controller
  is to pass through any methods or properties to the underlying array. This
  capability comes from `Ember.ArrayProxy`, which this class inherits from.

  Note: As of this writing, `ArrayController` does not add any functionality
  to its superclass, `ArrayProxy`. The Ember team plans to add additional
  controller-specific functionality in the future, e.g. single or multiple
  selection support. If you are creating something that is conceptually a
  controller, use this class.

  @class ArrayController
  @namespace Ember
  @extends Ember.ArrayProxy
  @uses Ember.SortableMixin
  @uses Ember.ControllerMixin
*/

Ember.ArrayController = Ember.ArrayProxy.extend(Ember.ControllerMixin,
  Ember.SortableMixin);

})();



(function() {
/**
@module ember
@submodule ember-runtime
*/

/**
  Ember.ObjectController is part of Ember's Controller layer. A single
  shared instance of each Ember.ObjectController subclass in your application's
  namespace will be created at application initialization and be stored on your
  application's Ember.Router instance.

  Ember.ObjectController derives its functionality from its superclass
  Ember.ObjectProxy and the Ember.ControllerMixin mixin.

  @class ObjectController
  @namespace Ember
  @extends Ember.ObjectProxy
  @uses Ember.ControllerMixin
**/
Ember.ObjectController = Ember.ObjectProxy.extend(Ember.ControllerMixin);

})();



(function() {

})();



(function() {
/**
Ember Runtime

@module ember
@submodule ember-runtime
@requires ember-metal
*/

})();

(function() {
function visit(vertex, fn, visited, path) {
  var name = vertex.name,
    vertices = vertex.incoming,
    names = vertex.incomingNames,
    len = names.length,
    i;
  if (!visited) {
    visited = {};
  }
  if (!path) {
    path = [];
  }
  if (visited.hasOwnProperty(name)) {
    return;
  }
  path.push(name);
  visited[name] = true;
  for (i = 0; i < len; i++) {
    visit(vertices[names[i]], fn, visited, path);
  }
  fn(vertex, path);
  path.pop();
}

function DAG() {
  this.names = [];
  this.vertices = {};
}

DAG.prototype.add = function(name) {
  if (!name) { return; }
  if (this.vertices.hasOwnProperty(name)) {
    return this.vertices[name];
  }
  var vertex = {
    name: name, incoming: {}, incomingNames: [], hasOutgoing: false, value: null
  };
  this.vertices[name] = vertex;
  this.names.push(name);
  return vertex;
};

DAG.prototype.map = function(name, value) {
  this.add(name).value = value;
};

DAG.prototype.addEdge = function(fromName, toName) {
  if (!fromName || !toName || fromName === toName) {
    return;
  }
  var from = this.add(fromName), to = this.add(toName);
  if (to.incoming.hasOwnProperty(fromName)) {
    return;
  }
  function checkCycle(vertex, path) {
    if (vertex.name === toName) {
      throw new Error("cycle detected: " + toName + " <- " + path.join(" <- "));
    }
  }
  visit(from, checkCycle);
  from.hasOutgoing = true;
  to.incoming[fromName] = from;
  to.incomingNames.push(fromName);
};

DAG.prototype.topsort = function(fn) {
  var visited = {},
    vertices = this.vertices,
    names = this.names,
    len = names.length,
    i, vertex;
  for (i = 0; i < len; i++) {
    vertex = vertices[names[i]];
    if (!vertex.hasOutgoing) {
      visit(vertex, fn, visited);
    }
  }
};

DAG.prototype.addEdges = function(name, value, before, after) {
  var i;
  this.map(name, value);
  if (before) {
    if (typeof before === 'string') {
      this.addEdge(name, before);
    } else {
      for (i = 0; i < before.length; i++) {
        this.addEdge(name, before[i]);
      }
    }
  }
  if (after) {
    if (typeof after === 'string') {
      this.addEdge(after, name);
    } else {
      for (i = 0; i < after.length; i++) {
        this.addEdge(after[i], name);
      }
    }
  }
};

Ember.DAG = DAG;

})();



(function() {
/**
@module ember
@submodule ember-application
*/

var get = Ember.get, set = Ember.set;

/**
  An instance of `Ember.Application` is the starting point for every Ember.js
  application. It helps to instantiate, initialize and coordinate the many
  objects that make up your app.

  Each Ember.js app has one and only one `Ember.Application` object. In fact, the very
  first thing you should do in your application is create the instance:

  ```javascript
  window.App = Ember.Application.create();
  ```

  Typically, the application object is the only global variable. All other
  classes in your app should be properties on the `Ember.Application` instance,
  which highlights its first role: a global namespace.

  For example, if you define a view class, it might look like this:

  ```javascript
  App.MyView = Ember.View.extend();
  ```

  After all of your classes are defined, call `App.initialize()` to start the
  application.

  Because `Ember.Application` inherits from `Ember.Namespace`, any classes
  you create will have useful string representations when calling `toString()`;
  see the `Ember.Namespace` documentation for more information.

  While you can think of your `Ember.Application` as a container that holds the
  other classes in your application, there are several other responsibilities
  going on under-the-hood that you may want to understand.

  ### Event Delegation

  Ember.js uses a technique called _event delegation_. This allows the framework
  to set up a global, shared event listener instead of requiring each view to do
  it manually. For example, instead of each view registering its own `mousedown`
  listener on its associated element, Ember.js sets up a `mousedown` listener on
  the `body`.

  If a `mousedown` event occurs, Ember.js will look at the target of the event and
  start walking up the DOM node tree, finding corresponding views and invoking their
  `mouseDown` method as it goes.

  `Ember.Application` has a number of default events that it listens for, as well
  as a mapping from lowercase events to camel-cased view method names. For
  example, the `keypress` event causes the `keyPress` method on the view to be
  called, the `dblclick` event causes `doubleClick` to be called, and so on.

  If there is a browser event that Ember.js does not listen for by default, you
  can specify custom events and their corresponding view method names by setting
  the application's `customEvents` property:

  ```javascript
  App = Ember.Application.create({
    customEvents: {
      // add support for the loadedmetadata media
      // player event
      'loadedmetadata': "loadedMetadata"
    }
  });
  ```

  By default, the application sets up these event listeners on the document body.
  However, in cases where you are embedding an Ember.js application inside an
  existing page, you may want it to set up the listeners on an element inside
  the body.

  For example, if only events inside a DOM element with the ID of `ember-app` should
  be delegated, set your application's `rootElement` property:

  ```javascript
  window.App = Ember.Application.create({
    rootElement: '#ember-app'
  });
  ```

  The `rootElement` can be either a DOM element or a jQuery-compatible selector
  string. Note that *views appended to the DOM outside the root element will not
  receive events.* If you specify a custom root element, make sure you only append
  views inside it!

  To learn more about the advantages of event delegation and the Ember.js view layer,
  and a list of the event listeners that are setup by default, visit the
  [Ember.js View Layer guide](http://emberjs.com/guides/view_layer#toc_event-delegation).

  ### Dependency Injection

  One thing you may have noticed while using Ember.js is that you define *classes*, not
  *instances*. When your application loads, all of the instances are created for you.
  Creating these instances is the responsibility of `Ember.Application`.

  When the `Ember.Application` initializes, it will look for an `Ember.Router` class
  defined on the applications's `Router` property, like this:

  ```javascript
  App.Router = Ember.Router.extend({
  // ...
  });
  ```

  If found, the router is instantiated and saved on the application's `router`
  property (note the lowercase 'r'). While you should *not* reference this router
  instance directly from your application code, having access to `App.router`
  from the console can be useful during debugging.

  After the router is created, the application loops through all of the
  registered _injections_ and invokes them once for each property on the
  `Ember.Application` object.

  An injection is a function that is responsible for instantiating objects from
  classes defined on the application. By default, the only injection registered
  instantiates controllers and makes them available on the router.

  For example, if you define a controller class:

  ```javascript
  App.MyController = Ember.Controller.extend({
    // ...
  });
  ```

  Your router will receive an instance of `App.MyController` saved on its
  `myController` property.

  Libraries on top of Ember.js can register additional injections. For example,
  if your application is using Ember Data, it registers an injection that
  instantiates `DS.Store`:

  ```javascript
  Ember.Application.registerInjection({
    name: 'store',
    before: 'controllers',

    injection: function(app, router, property) {
      if (property === 'Store') {
        set(router, 'store', app[property].create());
      }
    }
  });
  ```

  ### Routing

  In addition to creating your application's router, `Ember.Application` is also
  responsible for telling the router when to start routing.

  By default, the router will begin trying to translate the current URL into
  application state once the browser emits the `DOMContentReady` event. If you
  need to defer routing, you can call the application's `deferReadiness()` method.
  Once routing can begin, call the `advanceReadiness()` method.

  If there is any setup required before routing begins, you can implement a `ready()`
  method on your app that will be invoked immediately before routing begins:

  ```javascript
  window.App = Ember.Application.create({
    ready: function() {
      this.set('router.enableLogging', true);
    }
  });

  To begin routing, you must have at a minimum a top-level controller and view.
  You define these as `App.ApplicationController` and `App.ApplicationView`,
  respectively. Your application will not work if you do not define these two
  mandatory classes. For example:

  ```javascript
  App.ApplicationView = Ember.View.extend({
    templateName: 'application'
  });
  App.ApplicationController = Ember.Controller.extend();
  ```

  @class Application
  @namespace Ember
  @extends Ember.Namespace
*/
Ember.Application = Ember.Namespace.extend(
/** @scope Ember.Application.prototype */{

  /**
    The root DOM element of the Application. This can be specified as an
    element or a
    [jQuery-compatible selector string](http://api.jquery.com/category/selectors/).

    This is the element that will be passed to the Application's,
    `eventDispatcher`, which sets up the listeners for event delegation. Every
    view in your application should be a child of the element you specify here.

    @property rootElement
    @type DOMElement
    @default 'body'
  */
  rootElement: 'body',

  /**
    The `Ember.EventDispatcher` responsible for delegating events to this
    application's views.

    The event dispatcher is created by the application at initialization time
    and sets up event listeners on the DOM element described by the
    application's `rootElement` property.

    See the documentation for `Ember.EventDispatcher` for more information.

    @property eventDispatcher
    @type Ember.EventDispatcher
    @default null
  */
  eventDispatcher: null,

  /**
    The DOM events for which the event dispatcher should listen.

    By default, the application's `Ember.EventDispatcher` listens
    for a set of standard DOM events, such as `mousedown` and
    `keyup`, and delegates them to your application's `Ember.View`
    instances.

    If you would like additional events to be delegated to your
    views, set your `Ember.Application`'s `customEvents` property
    to a hash containing the DOM event name as the key and the
    corresponding view method name as the value. For example:

        App = Ember.Application.create({
          customEvents: {
            // add support for the loadedmetadata media
            // player event
            'loadedmetadata': "loadedMetadata"
          }
        });

    @property customEvents
    @type Object
    @default null
  */
  customEvents: null,

  autoinit: !Ember.testing,

  isInitialized: false,

  init: function() {
    if (!this.$) { this.$ = Ember.$; }

    this._super();

    this.createEventDispatcher();

    // Start off the number of deferrals at 1. This will be
    // decremented by the Application's own `initialize` method.
    this._readinessDeferrals = 1;

    this.waitForDOMContentLoaded();

    if (this.autoinit) {
      var self = this;
      this.$().ready(function() {
        if (self.isDestroyed || self.isInitialized) return;
        self.initialize();
      });
    }
  },

  /** @private */
  createEventDispatcher: function() {
    var rootElement = get(this, 'rootElement'),
        eventDispatcher = Ember.EventDispatcher.create({
          rootElement: rootElement
        });

    set(this, 'eventDispatcher', eventDispatcher);
  },

  waitForDOMContentLoaded: function() {
    this.deferReadiness();

    var self = this;
    this.$().ready(function() {
      self.advanceReadiness();
    });
  },

  deferReadiness: function() {
    Ember.assert("You cannot defer readiness since the `ready()` hook has already been called.", this._readinessDeferrals > 0);
    this._readinessDeferrals++;
  },

  advanceReadiness: function() {
    this._readinessDeferrals--;

    if (this._readinessDeferrals === 0) {
      Ember.run.once(this, this.didBecomeReady);
    }
  },

  /**
    Instantiate all controllers currently available on the namespace
    and inject them onto a router.

    Example:

        App.PostsController = Ember.ArrayController.extend();
        App.CommentsController = Ember.ArrayController.extend();

        var router = Ember.Router.create({
          ...
        });

        App.initialize(router);

        router.get('postsController')     // <App.PostsController:ember1234>
        router.get('commentsController')  // <App.CommentsController:ember1235>

    @method initialize
    @param router {Ember.Router}
  */
  initialize: function(router) {
    Ember.assert("Application initialize may only be call once", !this.isInitialized);
    Ember.assert("Application not destroyed", !this.isDestroyed);

    router = this.setupRouter(router);

    this.runInjections(router);

    Ember.runLoadHooks('application', this);

    this.isInitialized = true;

    // At this point, any injections or load hooks that would have wanted
    // to defer readiness have fired.
    this.advanceReadiness();

    return this;
  },

  /** @private */
  runInjections: function(router) {
    var injections = get(this.constructor, 'injections'),
        graph = new Ember.DAG(),
        namespace = this,
        properties, i, injection;

    for (i=0; i<injections.length; i++) {
      injection = injections[i];
      graph.addEdges(injection.name, injection.injection, injection.before, injection.after);
    }

    graph.topsort(function (vertex) {
      var injection = vertex.value,
          properties = Ember.A(Ember.keys(namespace));
      properties.forEach(function(property) {
        injection(namespace, router, property);
      });
    });
  },

  /** @private */
  setupRouter: function(router) {
    if (!router && Ember.Router.detect(this.Router)) {
      router = this.Router.create();
      this._createdRouter = router;
    }

    if (router) {
      set(this, 'router', router);

      // By default, the router's namespace is the current application.
      //
      // This allows it to find model classes when a state has a
      // route like `/posts/:post_id`. In that case, it would first
      // convert `post_id` into `Post`, and then look it up on its
      // namespace.
      set(router, 'namespace', this);
    }

    return router;
  },

  /** @private */
  didBecomeReady: function() {
    var eventDispatcher = get(this, 'eventDispatcher'),
        customEvents    = get(this, 'customEvents'),
        router;

    eventDispatcher.setup(customEvents);

    this.ready();


    router = get(this, 'router');

    this.createApplicationView(router);

    if (router && router instanceof Ember.Router) {
      this.startRouting(router);
    }
  },

  createApplicationView: function (router) {
    var rootElement = get(this, 'rootElement'),
        applicationViewOptions = {},
        applicationViewClass = this.ApplicationView,
        applicationTemplate = Ember.TEMPLATES.application,
        applicationController, applicationView;

    // don't do anything unless there is an ApplicationView or application template
    if (!applicationViewClass && !applicationTemplate) return;

    if (router) {
      applicationController = get(router, 'applicationController');
      if (applicationController) {
        applicationViewOptions.controller = applicationController;
      }
    }

    if (applicationTemplate) {
      applicationViewOptions.template = applicationTemplate;
    }

    if (!applicationViewClass) {
      applicationViewClass = Ember.View;
    }

    applicationView = applicationViewClass.create(applicationViewOptions);

    this._createdApplicationView = applicationView;

    if (router) {
      set(router, 'applicationView', applicationView);
    }

    applicationView.appendTo(rootElement);
  },

  /**
    @private

    If the application has a router, use it to route to the current URL, and
    trigger a new call to `route` whenever the URL changes.

    @method startRouting
    @property router {Ember.Router}
  */
  startRouting: function(router) {
    var location = get(router, 'location');

    Ember.assert("You must have an application template or ApplicationView defined on your application", get(router, 'applicationView') );
    Ember.assert("You must have an ApplicationController defined on your application", get(router, 'applicationController') );

    router.route(location.getURL());
    location.onUpdateURL(function(url) {
      router.route(url);
    });
  },

  /**
    Called when the Application has become ready.
    The call will be delayed until the DOM has become ready.

    @event ready
  */
  ready: Ember.K,

  willDestroy: function() {
    get(this, 'eventDispatcher').destroy();
    if (this._createdRouter)          { this._createdRouter.destroy(); }
    if (this._createdApplicationView) { this._createdApplicationView.destroy(); }
  },

  registerInjection: function(options) {
    this.constructor.registerInjection(options);
  }
});

Ember.Application.reopenClass({
  concatenatedProperties: ['injections'],
  injections: Ember.A(),
  registerInjection: function(injection) {
    var injections = get(this, 'injections');

    Ember.assert("The injection '" + injection.name + "' has already been registered", !injections.findProperty('name', injection.name));
    Ember.assert("An injection cannot be registered with both a before and an after", !(injection.before && injection.after));
    Ember.assert("An injection cannot be registered without an injection function", Ember.canInvoke(injection, 'injection'));

    injections.push(injection);
  }
});

Ember.Application.registerInjection({
  name: 'controllers',
  injection: function(app, router, property) {
    if (!router) { return; }
    if (!/^[A-Z].*Controller$/.test(property)) { return; }

    var name = property.charAt(0).toLowerCase() + property.substr(1),
        controllerClass = app[property], controller;

    if(!Ember.Object.detect(controllerClass)){ return; }
    controller = app[property].create();

    router.set(name, controller);

    controller.setProperties({
      target: router,
      controllers: router,
      namespace: app
    });
  }
});

Ember.runLoadHooks('Ember.Application', Ember.Application);


})();



(function() {

})();



(function() {
/**
Ember Application

@module ember
@submodule ember-application
@requires ember-views, ember-states, ember-routing
*/

})();

(function() {
/**
@module ember
@submodule ember-views
*/

var jQuery = Ember.imports.jQuery;
Ember.assert("Ember Views require jQuery 1.7 or 1.8", jQuery && (jQuery().jquery.match(/^1\.(7(?!$)(?!\.[01])|8)(\.\d+)?(pre|rc\d?)?/) || Ember.ENV.FORCE_JQUERY));

/**
  Alias for jQuery

  @method $
  @for Ember
*/
Ember.$ = jQuery;

})();



(function() {
/**
@module ember
@submodule ember-views
*/

// http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#dndevents
var dragEvents = Ember.String.w('dragstart drag dragenter dragleave dragover drop dragend');

// Copies the `dataTransfer` property from a browser event object onto the
// jQuery event object for the specified events
Ember.EnumerableUtils.forEach(dragEvents, function(eventName) {
  Ember.$.event.fixHooks[eventName] = { props: ['dataTransfer'] };
});

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set;
var indexOf = Ember.ArrayPolyfills.indexOf;

var ClassSet = function() {
  this.seen = {};
  this.list = [];
};

ClassSet.prototype = {
  add: function(string) {
    if (string in this.seen) { return; }
    this.seen[string] = true;

    this.list.push(string);
  },

  toDOM: function() {
    return this.list.join(" ");
  }
};

/**
  Ember.RenderBuffer gathers information regarding the a view and generates the
  final representation. Ember.RenderBuffer will generate HTML which can be pushed
  to the DOM.

  @class RenderBuffer
  @namespace Ember
  @constructor
*/
Ember.RenderBuffer = function(tagName) {
  return new Ember._RenderBuffer(tagName);
};

Ember._RenderBuffer = function(tagName) {
  this.elementTag = tagName;
  this.childBuffers = [];
};

Ember._RenderBuffer.prototype =
/** @scope Ember.RenderBuffer.prototype */ {

  /**
    Array of class-names which will be applied in the class="" attribute

    You should not maintain this array yourself, rather, you should use
    the addClass() method of Ember.RenderBuffer.

    @property elementClasses
    @type Array
    @default []
  */
  elementClasses: null,

  /**
    The id in of the element, to be applied in the id="" attribute

    You should not set this property yourself, rather, you should use
    the id() method of Ember.RenderBuffer.

    @property elementId
    @type String
    @default null
  */
  elementId: null,

  /**
    A hash keyed on the name of the attribute and whose value will be
    applied to that attribute. For example, if you wanted to apply a
    data-view="Foo.bar" property to an element, you would set the
    elementAttributes hash to {'data-view':'Foo.bar'}

    You should not maintain this hash yourself, rather, you should use
    the attr() method of Ember.RenderBuffer.

    @property elementAttributes
    @type Hash
    @default {}
  */
  elementAttributes: null,

  /**
    The tagname of the element an instance of Ember.RenderBuffer represents.

    Usually, this gets set as the first parameter to Ember.RenderBuffer. For
    example, if you wanted to create a `p` tag, then you would call

      Ember.RenderBuffer('p')

    @property elementTag
    @type String
    @default null
  */
  elementTag: null,

  /**
    A hash keyed on the name of the style attribute and whose value will
    be applied to that attribute. For example, if you wanted to apply a
    background-color:black;" style to an element, you would set the
    elementStyle hash to {'background-color':'black'}

    You should not maintain this hash yourself, rather, you should use
    the style() method of Ember.RenderBuffer.

    @property elementStyle
    @type Hash
    @default {}
  */
  elementStyle: null,

  /**
    Nested RenderBuffers will set this to their parent RenderBuffer
    instance.

    @property parentBuffer
    @type Ember._RenderBuffer
  */
  parentBuffer: null,

  /**
    Adds a string of HTML to the RenderBuffer.

    @method push
    @param {String} string HTML to push into the buffer
    @chainable
  */
  push: function(string) {
    this.childBuffers.push(String(string));
    return this;
  },

  /**
    Adds a class to the buffer, which will be rendered to the class attribute.

    @method addClass
    @param {String} className Class name to add to the buffer
    @chainable
  */
  addClass: function(className) {
    // lazily create elementClasses
    var elementClasses = this.elementClasses = (this.elementClasses || new ClassSet());
    this.elementClasses.add(className);

    return this;
  },

  /**
    Sets the elementID to be used for the element.

    @method id
    @param {String} id
    @chainable
  */
  id: function(id) {
    this.elementId = id;
    return this;
  },

  // duck type attribute functionality like jQuery so a render buffer
  // can be used like a jQuery object in attribute binding scenarios.

  /**
    Adds an attribute which will be rendered to the element.

    @method attr
    @param {String} name The name of the attribute
    @param {String} value The value to add to the attribute
    @chainable
    @return {Ember.RenderBuffer|String} this or the current attribute value
  */
  attr: function(name, value) {
    var attributes = this.elementAttributes = (this.elementAttributes || {});

    if (arguments.length === 1) {
      return attributes[name];
    } else {
      attributes[name] = value;
    }

    return this;
  },

  /**
    Remove an attribute from the list of attributes to render.

    @method removeAttr
    @param {String} name The name of the attribute
    @chainable
  */
  removeAttr: function(name) {
    var attributes = this.elementAttributes;
    if (attributes) { delete attributes[name]; }

    return this;
  },

  /**
    Adds a style to the style attribute which will be rendered to the element.

    @method style
    @param {String} name Name of the style
    @param {String} value
    @chainable
  */
  style: function(name, value) {
    var style = this.elementStyle = (this.elementStyle || {});

    this.elementStyle[name] = value;
    return this;
  },

  /**
    @private

    Create a new child render buffer from a parent buffer. Optionally set
    additional properties on the buffer. Optionally invoke a callback
    with the newly created buffer.

    This is a primitive method used by other public methods: `begin`,
    `prepend`, `replaceWith`, `insertAfter`.

    @method newBuffer
    @param {String} tagName Tag name to use for the child buffer's element
    @param {Ember._RenderBuffer} parent The parent render buffer that this
      buffer should be appended to.
    @param {Function} fn A callback to invoke with the newly created buffer.
    @param {Object} other Additional properties to add to the newly created
      buffer.
  */
  newBuffer: function(tagName, parent, fn, other) {
    var buffer = new Ember._RenderBuffer(tagName);
    buffer.parentBuffer = parent;

    if (other) { Ember.$.extend(buffer, other); }
    if (fn) { fn.call(this, buffer); }

    return buffer;
  },

  /**
    @private

    Replace the current buffer with a new buffer. This is a primitive
    used by `remove`, which passes `null` for `newBuffer`, and `replaceWith`,
    which passes the new buffer it created.

    @method replaceWithBuffer
    @param {Ember._RenderBuffer} buffer The buffer to insert in place of
      the existing buffer.
  */
  replaceWithBuffer: function(newBuffer) {
    var parent = this.parentBuffer;
    if (!parent) { return; }

    var childBuffers = parent.childBuffers;

    var index = indexOf.call(childBuffers, this);

    if (newBuffer) {
      childBuffers.splice(index, 1, newBuffer);
    } else {
      childBuffers.splice(index, 1);
    }
  },

  /**
    Creates a new Ember.RenderBuffer object with the provided tagName as
    the element tag and with its parentBuffer property set to the current
    Ember.RenderBuffer.

    @method begin
    @param {String} tagName Tag name to use for the child buffer's element
    @return {Ember.RenderBuffer} A new RenderBuffer object
  */
  begin: function(tagName) {
    return this.newBuffer(tagName, this, function(buffer) {
      this.childBuffers.push(buffer);
    });
  },

  /**
    Prepend a new child buffer to the current render buffer.

    @method prepend
    @param {String} tagName Tag name to use for the child buffer's element
  */
  prepend: function(tagName) {
    return this.newBuffer(tagName, this, function(buffer) {
      this.childBuffers.splice(0, 0, buffer);
    });
  },

  /**
    Replace the current buffer with a new render buffer.

    @method replaceWith
    @param {String} tagName Tag name to use for the new buffer's element
  */
  replaceWith: function(tagName) {
    var parentBuffer = this.parentBuffer;

    return this.newBuffer(tagName, parentBuffer, function(buffer) {
      this.replaceWithBuffer(buffer);
    });
  },

  /**
    Insert a new render buffer after the current render buffer.

    @method insertAfter
    @param {String} tagName Tag name to use for the new buffer's element
  */
  insertAfter: function(tagName) {
    var parentBuffer = get(this, 'parentBuffer');

    return this.newBuffer(tagName, parentBuffer, function(buffer) {
      var siblings = parentBuffer.childBuffers;
      var index = indexOf.call(siblings, this);
      siblings.splice(index + 1, 0, buffer);
    });
  },

  /**
    Closes the current buffer and adds its content to the parentBuffer.

    @method end
    @return {Ember.RenderBuffer} The parentBuffer, if one exists. Otherwise, this
  */
  end: function() {
    var parent = this.parentBuffer;
    return parent || this;
  },

  remove: function() {
    this.replaceWithBuffer(null);
  },

  /**
    @method element
    @return {DOMElement} The element corresponding to the generated HTML
      of this buffer
  */
  element: function() {
    return Ember.$(this.string())[0];
  },

  /**
    Generates the HTML content for this buffer.

    @method string
    @return {String} The generated HTMl
  */
  string: function() {
    var content = '', tag = this.elementTag, openTag;

    if (tag) {
      var id = this.elementId,
          classes = this.elementClasses,
          attrs = this.elementAttributes,
          style = this.elementStyle,
          styleBuffer = '', prop;

      openTag = ["<" + tag];

      if (id) { openTag.push('id="' + this._escapeAttribute(id) + '"'); }
      if (classes) { openTag.push('class="' + this._escapeAttribute(classes.toDOM()) + '"'); }

      if (style) {
        for (prop in style) {
          if (style.hasOwnProperty(prop)) {
            styleBuffer += (prop + ':' + this._escapeAttribute(style[prop]) + ';');
          }
        }

        openTag.push('style="' + styleBuffer + '"');
      }

      if (attrs) {
        for (prop in attrs) {
          if (attrs.hasOwnProperty(prop)) {
            openTag.push(prop + '="' + this._escapeAttribute(attrs[prop]) + '"');
          }
        }
      }

      openTag = openTag.join(" ") + '>';
    }

    var childBuffers = this.childBuffers;

    Ember.ArrayPolyfills.forEach.call(childBuffers, function(buffer) {
      var stringy = typeof buffer === 'string';
      content += (stringy ? buffer : buffer.string());
    });

    if (tag) {
      return openTag + content + "</" + tag + ">";
    } else {
      return content;
    }
  },

  _escapeAttribute: function(value) {
    // Stolen shamelessly from Handlebars

    var escape = {
      "<": "&lt;",
      ">": "&gt;",
      '"': "&quot;",
      "'": "&#x27;",
      "`": "&#x60;"
    };

    var badChars = /&(?!\w+;)|[<>"'`]/g;
    var possible = /[&<>"'`]/;

    var escapeChar = function(chr) {
      return escape[chr] || "&amp;";
    };

    var string = value.toString();

    if(!possible.test(string)) { return string; }
    return string.replace(badChars, escapeChar);
  }

};

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set, fmt = Ember.String.fmt;

/**
  Ember.EventDispatcher handles delegating browser events to their corresponding
  Ember.Views. For example, when you click on a view, Ember.EventDispatcher ensures
  that that view's `mouseDown` method gets called.

  @class EventDispatcher
  @namespace Ember
  @private
  @extends Ember.Object
*/
Ember.EventDispatcher = Ember.Object.extend(
/** @scope Ember.EventDispatcher.prototype */{

  /**
    @private

    The root DOM element to which event listeners should be attached. Event
    listeners will be attached to the document unless this is overridden.

    Can be specified as a DOMElement or a selector string.

    The default body is a string since this may be evaluated before document.body
    exists in the DOM.

    @property rootElement
    @type DOMElement
    @default 'body'
  */
  rootElement: 'body',

  /**
    @private

    Sets up event listeners for standard browser events.

    This will be called after the browser sends a DOMContentReady event. By
    default, it will set up all of the listeners on the document body. If you
    would like to register the listeners on a different element, set the event
    dispatcher's `root` property.

    @method setup
    @param addedEvents {Hash}
  */
  setup: function(addedEvents) {
    var event, events = {
      touchstart  : 'touchStart',
      touchmove   : 'touchMove',
      touchend    : 'touchEnd',
      touchcancel : 'touchCancel',
      keydown     : 'keyDown',
      keyup       : 'keyUp',
      keypress    : 'keyPress',
      mousedown   : 'mouseDown',
      mouseup     : 'mouseUp',
      contextmenu : 'contextMenu',
      click       : 'click',
      dblclick    : 'doubleClick',
      mousemove   : 'mouseMove',
      focusin     : 'focusIn',
      focusout    : 'focusOut',
      mouseenter  : 'mouseEnter',
      mouseleave  : 'mouseLeave',
      submit      : 'submit',
      input       : 'input',
      change      : 'change',
      dragstart   : 'dragStart',
      drag        : 'drag',
      dragenter   : 'dragEnter',
      dragleave   : 'dragLeave',
      dragover    : 'dragOver',
      drop        : 'drop',
      dragend     : 'dragEnd'
    };

    Ember.$.extend(events, addedEvents || {});

    var rootElement = Ember.$(get(this, 'rootElement'));

    Ember.assert(fmt('You cannot use the same root element (%@) multiple times in an Ember.Application', [rootElement.selector || rootElement[0].tagName]), !rootElement.is('.ember-application'));
    Ember.assert('You cannot make a new Ember.Application using a root element that is a descendent of an existing Ember.Application', !rootElement.closest('.ember-application').length);
    Ember.assert('You cannot make a new Ember.Application using a root element that is an ancestor of an existing Ember.Application', !rootElement.find('.ember-application').length);

    rootElement.addClass('ember-application');

    Ember.assert('Unable to add "ember-application" class to rootElement. Make sure you set rootElement to the body or an element in the body.', rootElement.is('.ember-application'));

    for (event in events) {
      if (events.hasOwnProperty(event)) {
        this.setupHandler(rootElement, event, events[event]);
      }
    }
  },

  /**
    @private

    Registers an event listener on the document. If the given event is
    triggered, the provided event handler will be triggered on the target
    view.

    If the target view does not implement the event handler, or if the handler
    returns false, the parent view will be called. The event will continue to
    bubble to each successive parent view until it reaches the top.

    For example, to have the `mouseDown` method called on the target view when
    a `mousedown` event is received from the browser, do the following:

        setupHandler('mousedown', 'mouseDown');

    @method setupHandler
    @param {Element} rootElement
    @param {String} event the browser-originated event to listen to
    @param {String} eventName the name of the method to call on the view
  */
  setupHandler: function(rootElement, event, eventName) {
    var self = this;

    rootElement.delegate('.ember-view', event + '.ember', function(evt, triggeringManager) {
      return Ember.handleErrors(function() {
        var view = Ember.View.views[this.id],
            result = true, manager = null;

        manager = self._findNearestEventManager(view,eventName);

        if (manager && manager !== triggeringManager) {
          result = self._dispatchEvent(manager, evt, eventName, view);
        } else if (view) {
          result = self._bubbleEvent(view,evt,eventName);
        } else {
          evt.stopPropagation();
        }

        return result;
      }, this);
    });

    rootElement.delegate('[data-ember-action]', event + '.ember', function(evt) {
      return Ember.handleErrors(function() {
        var actionId = Ember.$(evt.currentTarget).attr('data-ember-action'),
            action   = Ember.Handlebars.ActionHelper.registeredActions[actionId],
            handler  = action.handler;

        if (action.eventName === eventName) {
          return handler(evt);
        }
      }, this);
    });
  },

  _findNearestEventManager: function(view, eventName) {
    var manager = null;

    while (view) {
      manager = get(view, 'eventManager');
      if (manager && manager[eventName]) { break; }

      view = get(view, 'parentView');
    }

    return manager;
  },

  _dispatchEvent: function(object, evt, eventName, view) {
    var result = true;

    var handler = object[eventName];
    if (Ember.typeOf(handler) === 'function') {
      result = handler.call(object, evt, view);
      // Do not preventDefault in eventManagers.
      evt.stopPropagation();
    }
    else {
      result = this._bubbleEvent(view, evt, eventName);
    }

    return result;
  },

  _bubbleEvent: function(view, evt, eventName) {
    return Ember.run(function() {
      return view.handleEvent(eventName, evt);
    });
  },

  destroy: function() {
    var rootElement = get(this, 'rootElement');
    Ember.$(rootElement).undelegate('.ember').removeClass('ember-application');
    return this._super();
  }
});

})();



(function() {
/**
@module ember
@submodule ember-views
*/

// Add a new named queue for rendering views that happens
// after bindings have synced.
var queues = Ember.run.queues;
queues.splice(Ember.$.inArray('actions', queues)+1, 0, 'render');

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set;

// Original class declaration and documentation in runtime/lib/controllers/controller.js
// NOTE: It may be possible with YUIDoc to combine docs in two locations

/**
Additional methods for the ControllerMixin

@class ControllerMixin
@namespace Ember
*/
Ember.ControllerMixin.reopen({

  target: null,
  controllers: null,
  namespace: null,
  view: null,

  /**
    `connectOutlet` creates a new instance of a provided view
    class, wires it up to its associated controller, and
    assigns the new view to a property on the current controller.

    The purpose of this method is to enable views that use
    outlets to quickly assign new views for a given outlet.

    For example, an application view's template may look like
    this:

    ``` handlebars
    <h1>My Blog</h1>
    {{outlet}}
    ```

    The view for this outlet is specified by assigning a
    `view` property to the application's controller. The
    following code will assign a new `App.PostsView` to
    that outlet:

    ``` javascript
    applicationController.connectOutlet('posts');
    ```

    In general, you will also want to assign a controller
    to the newly created view. By convention, a controller
    named `postsController` will be assigned as the view's
    controller.

    In an application initialized using `app.initialize(router)`,
    `connectOutlet` will look for `postsController` on the
    router. The initialization process will automatically
    create an instance of `App.PostsController` called
    `postsController`, so you don't need to do anything
    beyond `connectOutlet` to assign your view and wire it
    up to its associated controller.

    You can supply a `content` for the controller by supplying
    a final argument after the view class:

    ``` javascript
    applicationController.connectOutlet('posts', App.Post.find());
    ```

    You can specify a particular outlet to use. For example, if your main
    template looks like:

    ``` handlebars
    <h1>My Blog</h1>
    {{outlet masterView}}
    {{outlet detailView}}
    ```

    You can assign an `App.PostsView` to the masterView outlet:

    ``` javascript
    applicationController.connectOutlet({
      outletName: 'masterView',
      name: 'posts',
      context: App.Post.find()
    });
    ```

    You can write this as:

    ``` javascript
    applicationController.connectOutlet('masterView', 'posts', App.Post.find());
    ```


    @method connectOutlet
    @param {String} outletName a name for the outlet to set
    @param {String} name a view/controller pair name
    @param {Object} context a context object to assign to the
      controller's `content` property, if a controller can be
      found (optional)
  */
  connectOutlet: function(name, context) {
    // Normalize arguments. Supported arguments:
    //
    // name
    // name, context
    // outletName, name
    // outletName, name, context
    // options
    //
    // The options hash has the following keys:
    //
    //   name: the name of the controller and view
    //     to use. If this is passed, the name
    //     determines the view and controller.
    //   outletName: the name of the outlet to
    //     fill in. default: 'view'
    //   viewClass: the class of the view to instantiate
    //   controller: the controller instance to pass
    //     to the view
    //   context: an object that should become the
    //     controller's `content` and thus the
    //     template's context.

    var outletName, viewClass, view, controller, options;

    if (Ember.typeOf(context) === 'string') {
      outletName = name;
      name = context;
      context = arguments[2];
    }

    if (arguments.length === 1) {
      if (Ember.typeOf(name) === 'object') {
        options = name;
        outletName = options.outletName;
        name = options.name;
        viewClass = options.viewClass;
        controller = options.controller;
        context = options.context;
      }
    } else {
      options = {};
    }

    outletName = outletName || 'view';

    Ember.assert("The viewClass is either missing or the one provided did not resolve to a view", !!name || (!name && !!viewClass));

    Ember.assert("You must supply a name or a viewClass to connectOutlet, but not both", (!!name && !viewClass && !controller) || (!name && !!viewClass));

    if (name) {
      var namespace = get(this, 'namespace'),
          controllers = get(this, 'controllers');

      var viewClassName = name.charAt(0).toUpperCase() + name.substr(1) + "View";
      viewClass = get(namespace, viewClassName);
      controller = get(controllers, name + 'Controller');

      Ember.assert("The name you supplied " + name + " did not resolve to a view " + viewClassName, !!viewClass);
      Ember.assert("The name you supplied " + name + " did not resolve to a controller " + name + 'Controller', (!!controller && !!context) || !context);
    }

    if (controller && context) { set(controller, 'content', context); }

    view = this.createOutletView(outletName, viewClass);

    if (controller) { set(view, 'controller', controller); }
    set(this, outletName, view);

    return view;
  },

  /**
    Convenience method to connect controllers. This method makes other controllers
    available on the controller the method was invoked on.

    For example, to make the `personController` and the `postController` available
    on the `overviewController`, you would call:

        overviewController.connectControllers('person', 'post');

    @method connectControllers
    @param {String...} controllerNames the controllers to make available
  */
  connectControllers: function() {
    var controllers = get(this, 'controllers'),
        controllerNames = Array.prototype.slice.apply(arguments),
        controllerName;

    for (var i=0, l=controllerNames.length; i<l; i++) {
      controllerName = controllerNames[i] + 'Controller';
      set(this, controllerName, get(controllers, controllerName));
    }
  },

  /**
    `disconnectOutlet` removes previously attached view from given outlet.

    @method disconnectOutlet
    @param  {String} outletName the outlet name. (optional)
   */
  disconnectOutlet: function(outletName) {
    outletName = outletName || 'view';

    set(this, outletName, null);
  },

  /**
    `createOutletView` is a hook you may want to override if you need to do
    something special with the view created for the outlet. For example
    you may want to implement views sharing across outlets.

    @method createOutletView
    @param outletName {String}
    @param viewClass {Ember.View}
  */
  createOutletView: function(outletName, viewClass) {
    return viewClass.create();
  }
});

})();



(function() {

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set, addObserver = Ember.addObserver, removeObserver = Ember.removeObserver;
var meta = Ember.meta, fmt = Ember.String.fmt;
var a_slice = [].slice;
var a_forEach = Ember.EnumerableUtils.forEach;

var childViewsProperty = Ember.computed(function() {
  var childViews = this._childViews;

  var ret = Ember.A();

  a_forEach(childViews, function(view) {
    if (view.isVirtual) {
      ret.pushObjects(get(view, 'childViews'));
    } else {
      ret.push(view);
    }
  });

  return ret;
}).property();

Ember.warn("The VIEW_PRESERVES_CONTEXT flag has been removed and the functionality can no longer be disabled.", Ember.ENV.VIEW_PRESERVES_CONTEXT !== false);

/**
  Global hash of shared templates. This will automatically be populated
  by the build tools so that you can store your Handlebars templates in
  separate files that get loaded into JavaScript at buildtime.

  @property TEMPLATES
  @for Ember
  @type Hash
*/
Ember.TEMPLATES = {};

var invokeForState = {
  preRender: {},
  inBuffer: {},
  hasElement: {},
  inDOM: {},
  destroyed: {}
};

Ember.CoreView = Ember.Object.extend(Ember.Evented, {
  init: function() {
    this._super();

    // Register the view for event handling. This hash is used by
    // Ember.EventDispatcher to dispatch incoming events.
    if (!this.isVirtual) Ember.View.views[get(this, 'elementId')] = this;
  },

  /**
    If the view is currently inserted into the DOM of a parent view, this
    property will point to the parent of the view.

    @property parentView
    @type Ember.View
    @default null
  */
  parentView: Ember.computed(function() {
    var parent = get(this, '_parentView');

    if (parent && parent.isVirtual) {
      return get(parent, 'parentView');
    } else {
      return parent;
    }
  }).property('_parentView').volatile(),

  state: 'preRender',

  _parentView: null,

  // return the current view, not including virtual views
  concreteView: Ember.computed(function() {
    if (!this.isVirtual) { return this; }
    else { return get(this, 'parentView'); }
  }).property('_parentView').volatile(),

  /**
    Creates a new renderBuffer with the passed tagName. You can override this
    method to provide further customization to the buffer if needed. Normally
    you will not need to call or override this method.

    @method renderBuffer
    @param [tagName] {String}
    @return {Ember.RenderBuffer}
  */
  renderBuffer: function(tagName) {
    tagName = tagName || get(this, 'tagName');

    // Explicitly check for null or undefined, as tagName
    // may be an empty string, which would evaluate to false.
    if (tagName === null || tagName === undefined) {
      tagName = 'div';
    }

    return Ember.RenderBuffer(tagName);
  },

  instrumentName: 'render.core_view',

  instrumentDetails: function(hash) {
    hash.type = this.constructor.toString();
  },

  /**
    @private

    Invoked by the view system when this view needs to produce an HTML
    representation. This method will create a new render buffer, if needed,
    then apply any default attributes, such as class names and visibility.
    Finally, the `render()` method is invoked, which is responsible for
    doing the bulk of the rendering.

    You should not need to override this method; instead, implement the
    `template` property, or if you need more control, override the `render`
    method.

    @method renderToBuffer
    @param {Ember.RenderBuffer} buffer the render buffer. If no buffer is
      passed, a default buffer, using the current view's `tagName`, will
      be used.
  */
  renderToBuffer: function(parentBuffer, bufferOperation) {
    var name = get(this, 'instrumentName'),
        details = {};

    this.instrumentDetails(details);

    return Ember.instrument(name, details, function() {
      return this._renderToBuffer(parentBuffer, bufferOperation);
    }, this);
  },

  _renderToBuffer: function(parentBuffer, bufferOperation) {
    var buffer;

    Ember.run.sync();

    // Determine where in the parent buffer to start the new buffer.
    // By default, a new buffer will be appended to the parent buffer.
    // The buffer operation may be changed if the child views array is
    // mutated by Ember.ContainerView.
    bufferOperation = bufferOperation || 'begin';

    // If this is the top-most view, start a new buffer. Otherwise,
    // create a new buffer relative to the original using the
    // provided buffer operation (for example, `insertAfter` will
    // insert a new buffer after the "parent buffer").
    if (parentBuffer) {
      var tagName = get(this, 'tagName');
      if (tagName === null || tagName === undefined) {
        tagName = 'div';
      }

      buffer = parentBuffer[bufferOperation](tagName);
    } else {
      buffer = this.renderBuffer();
    }

    this.buffer = buffer;
    this.transitionTo('inBuffer', false);

    this.beforeRender(buffer);
    this.render(buffer);
    this.afterRender(buffer);

    return buffer;
  },

  /**
    @private

    Override the default event firing from Ember.Evented to
    also call methods with the given name.

    @method trigger
    @param name {String}
  */
  trigger: function(name) {
    this._super.apply(this, arguments);
    var method = this[name];
    if (method) {
      var args = [], i, l;
      for (i = 1, l = arguments.length; i < l; i++) {
        args.push(arguments[i]);
      }
      return method.apply(this, args);
    }
  },

  has: function(name) {
    return Ember.typeOf(this[name]) === 'function' || this._super(name);
  },

  willDestroy: function() {
    var parent = get(this, '_parentView');

    // destroy the element -- this will avoid each child view destroying
    // the element over and over again...
    if (!this.removedFromDOM) { this.destroyElement(); }

    // remove from parent if found. Don't call removeFromParent,
    // as removeFromParent will try to remove the element from
    // the DOM again.
    if (parent) { parent.removeChild(this); }

    this.state = 'destroyed';

    // next remove view from global hash
    if (!this.isVirtual) delete Ember.View.views[get(this, 'elementId')];
  },

  clearRenderedChildren: Ember.K,
  invokeRecursively: Ember.K,
  invalidateRecursively: Ember.K,
  transitionTo: Ember.K,
  destroyElement: Ember.K,
  _notifyWillInsertElement: Ember.K,
  _notifyDidInsertElement: Ember.K
});

/**
  `Ember.View` is the class in Ember responsible for encapsulating templates of HTML
  content, combining templates with data to render as sections of a page's DOM, and
  registering and responding to user-initiated events.

  ## HTML Tag
  The default HTML tag name used for a view's DOM representation is `div`. This can be
  customized by setting the `tagName` property. The following view class:

  ``` javascript
  ParagraphView = Ember.View.extend({
    tagName: 'em'
  });
  ```

  Would result in instances with the following HTML:

  ``` html
  <em id="ember1" class="ember-view"></em>
  ```

  ## HTML `class` Attribute
  The HTML `class` attribute of a view's tag can be set by providing a `classNames` property
  that is set to an array of strings:

  ``` javascript
  MyView = Ember.View.extend({
    classNames: ['my-class', 'my-other-class']
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view my-class my-other-class"></div>
  ```

  `class` attribute values can also be set by providing a `classNameBindings` property
  set to an array of properties names for the view. The return value of these properties
  will be added as part of the value for the view's `class` attribute. These properties
  can be computed properties:

  ``` javascript
  MyView = Ember.View.extend({
    classNameBindings: ['propertyA', 'propertyB'],
    propertyA: 'from-a',
    propertyB: function(){
      if(someLogic){ return 'from-b'; }
    }.property()
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view from-a from-b"></div>
  ```

  If the value of a class name binding returns a boolean the property name itself
  will be used as the class name if the property is true. The class name will
  not be added if the value is `false` or `undefined`.

  ``` javascript
  MyView = Ember.View.extend({
    classNameBindings: ['hovered'],
    hovered: true
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view hovered"></div>
  ```

  When using boolean class name bindings you can supply a string value other than the
  property name for use as the `class` HTML attribute by appending the preferred value after
  a ":" character when defining the binding:

  ``` javascript
  MyView = Ember.View.extend({
    classNameBindings: ['awesome:so-very-cool'],
    awesome: true
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view so-very-cool"></div>
  ```


  Boolean value class name bindings whose property names are in a camelCase-style
  format will be converted to a dasherized format:

  ``` javascript
  MyView = Ember.View.extend({
    classNameBindings: ['isUrgent'],
    isUrgent: true
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view is-urgent"></div>
  ```


  Class name bindings can also refer to object values that are found by
  traversing a path relative to the view itself:

  ``` javascript
  MyView = Ember.View.extend({
    classNameBindings: ['messages.empty']
    messages: Ember.Object.create({
      empty: true
    })
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view empty"></div>
  ```


  If you want to add a class name for a property which evaluates to true and
  and a different class name if it evaluates to false, you can pass a binding
  like this:

  ```
  // Applies 'enabled' class when isEnabled is true and 'disabled' when isEnabled is false
  Ember.View.create({
    classNameBindings: ['isEnabled:enabled:disabled']
    isEnabled: true
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view enabled"></div>
  ```

  When isEnabled is `false`, the resulting HTML reprensentation looks like this:

  ``` html
  <div id="ember1" class="ember-view disabled"></div>
  ```

  This syntax offers the convenience to add a class if a property is `false`:

  ``` javascript
  // Applies no class when isEnabled is true and class 'disabled' when isEnabled is false
  Ember.View.create({
    classNameBindings: ['isEnabled::disabled']
    isEnabled: true
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view"></div>
  ```

  When the `isEnabled` property on the view is set to `false`, it will result
  in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view disabled"></div>
  ```

  Updates to the the value of a class name binding will result in automatic update
  of the  HTML `class` attribute in the view's rendered HTML representation.
  If the value becomes  `false` or `undefined` the class name will be removed.

  Both `classNames` and `classNameBindings` are concatenated properties.
  See `Ember.Object` documentation for more information about concatenated properties.

  ## HTML Attributes

  The HTML attribute section of a view's tag can be set by providing an `attributeBindings`
  property set to an array of property names on the view. The return value of these properties
  will be used as the value of the view's HTML associated attribute:

  ``` javascript
  AnchorView = Ember.View.extend({
    tagName: 'a',
    attributeBindings: ['href'],
    href: 'http://google.com'
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <a id="ember1" class="ember-view" href="http://google.com"></a>
  ```

  If the return value of an `attributeBindings` monitored property is a boolean
  the property will follow HTML's pattern of repeating the attribute's name as
  its value:

  ``` javascript
  MyTextInput = Ember.View.extend({
    tagName: 'input',
    attributeBindings: ['disabled'],
    disabled: true
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <input id="ember1" class="ember-view" disabled="disabled" />
  ```

  `attributeBindings` can refer to computed properties:

  ``` javascript
  MyTextInput = Ember.View.extend({
    tagName: 'input',
    attributeBindings: ['disabled'],
    disabled: function(){
      if (someLogic) {
        return true;
      } else {
        return false;
      }
    }.property()
  });
  ```

  Updates to the the property of an attribute binding will result in automatic update
  of the  HTML attribute in the view's rendered HTML representation.

  `attributeBindings` is a concatenated property. See `Ember.Object` documentation
  for more information about concatenated properties.

  ## Templates

  The HTML contents of a view's rendered representation are determined by its template.
  Templates can be any function that accepts an optional context parameter and returns
  a string of HTML that will be inserted within the view's tag. Most
  typically in Ember this function will be a compiled Ember.Handlebars template.

  ``` javascript
  AView = Ember.View.extend({
    template: Ember.Handlebars.compile('I am the template')
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view">I am the template</div>
  ```

  Within an Ember application is more common to define a Handlebars templates as
  part of a page:

  ``` handlebars
  <script type='text/x-handlebars' data-template-name='some-template'>
    Hello
  </script>
  ```

  And associate it by name using a view's `templateName` property:

  ``` javascript
  AView = Ember.View.extend({
    templateName: 'some-template'
  });
  ```

  Using a value for `templateName` that does not have a Handlebars template with a
  matching `data-template-name` attribute will throw an error.

  Assigning a value to both `template` and `templateName` properties will throw an error.

  For views classes that may have a template later defined (e.g. as the block portion of a `{{view}}`
  Handlebars helper call in another template or in a subclass), you can provide a `defaultTemplate`
  property set to compiled template function. If a template is not later provided for the view
  instance the `defaultTemplate` value will be used:

  ``` javascript
  AView = Ember.View.extend({
    defaultTemplate: Ember.Handlebars.compile('I was the default'),
    template: null,
    templateName: null
  });
  ```

  Will result in instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view">I was the default</div>
  ```

  If a `template` or `templateName` is provided it will take precedence over `defaultTemplate`:

  ``` javascript
  AView = Ember.View.extend({
    defaultTemplate: Ember.Handlebars.compile('I was the default')
  });

  aView = AView.create({
    template: Ember.Handlebars.compile('I was the template, not default')
  });
  ```

  Will result in the following HTML representation when rendered:

  ``` html
  <div id="ember1" class="ember-view">I was the template, not default</div>
  ```

  ## View Context

  The default context of the compiled template is the view's controller:

  ``` javascript
  AView = Ember.View.extend({
    template: Ember.Handlebars.compile('Hello {{excitedGreeting}}')
  });

  aController = Ember.Object.create({
    firstName: 'Barry',
    excitedGreeting: function(){
      return this.get("content.firstName") + "!!!"
    }.property()
  });

  aView = AView.create({
    controller: aController,
  });
  ```

  Will result in an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view">Hello Barry!!!</div>
  ```

  A context can also be explicitly supplied through the view's `context` property.
  If the view has neither `context` nor `controller` properties, the parentView's
  context will be used.

  ## Layouts

  Views can have a secondary template that wraps their main template. Like
  primary templates, layouts can be any function that  accepts an optional context
  parameter and returns a string of HTML that will be inserted inside view's tag. Views whose HTML
  element is self closing (e.g. `<input />`) cannot have a layout and this property will be ignored.

  Most typically in Ember a layout will be a compiled Ember.Handlebars template.

  A view's layout can be set directly with the `layout` property or reference an
  existing Handlebars template by name with the `layoutName` property.

  A template used as a layout must contain a single use of the Handlebars `{{yield}}`
  helper. The HTML contents of a view's rendered `template` will be inserted at this location:

  ``` javascript
  AViewWithLayout = Ember.View.extend({
    layout: Ember.Handlebars.compile("<div class='my-decorative-class'>{{yield}}</div>")
    template: Ember.Handlebars.compile("I got wrapped"),
  });
  ```

  Will result in view instances with an HTML representation of:

  ``` html
  <div id="ember1" class="ember-view">
    <div class="my-decorative-class">
      I got wrapped
    </div>
  </div>
  ```

  See `Handlebars.helpers.yield` for more information.

  ## Responding to Browser Events

  Views can respond to user-initiated events in one of three ways: method implementation,
  through an event manager, and through `{{action}}` helper use in their template or layout.

  ### Method Implementation

  Views can respond to user-initiated events by implementing a method that matches the
  event name. A `jQuery.Event` object will be passed as the argument to this method.

  ``` javascript
  AView = Ember.View.extend({
    click: function(event){
      // will be called when when an instance's
      // rendered element is clicked
    }
  });
  ```

  ### Event Managers

  Views can define an object as their `eventManager` property. This object can then
  implement methods that match the desired event names. Matching events that occur
  on the view's rendered HTML or the rendered HTML of any of its DOM descendants
  will trigger this method.  A `jQuery.Event` object will be passed as the first
  argument to the method and an  `Ember.View` object as the second. The `Ember.View`
  will be the view whose rendered HTML was interacted with. This may be the view with
  the `eventManager` property or one of its descendent views.

  ``` javascript
  AView = Ember.View.extend({
    eventManager: Ember.Object.create({
      doubleClick: function(event, view){
        // will be called when when an instance's
        // rendered element or any rendering
        // of this views's descendent
        // elements is clicked
      }
    })
  });
  ```

  An event defined for an event manager takes precedence over events of the same
  name handled through methods on the view.

  ``` javascript
  AView = Ember.View.extend({
    mouseEnter: function(event){
      // will never trigger.
    },
    eventManager: Ember.Object.create({
      mouseEnter: function(event, view){
        // takes presedence over AView#mouseEnter
      }
    })
  });
  ```

  Similarly a view's event manager will take precedence for events of any views
  rendered as a descendent. A method name that matches an event name will not be called
  if the view instance was rendered inside the HTML representation of a view that has
  an `eventManager` property defined that handles events of the name.  Events not handled
  by the event manager will still trigger method calls on the descendent.

  ``` javascript
  OuterView = Ember.View.extend({
    template: Ember.Handlebars.compile("outer {{#view InnerView}}inner{{/view}} outer"),
    eventManager: Ember.Object.create({
      mouseEnter: function(event, view){
        // view might be instance of either
        // OutsideView or InnerView depending on
        // where on the page the user interaction occured
      }
    })
  });

  InnerView = Ember.View.extend({
    click: function(event){
      // will be called if rendered inside
      // an OuterView because OuterView's
      // eventManager doesn't handle click events
    },
    mouseEnter: function(event){
      // will never be called if rendered inside
      // an OuterView.
    }
  });
  ```

  ### Handlebars `{{action}}` Helper

  See `Handlebars.helpers.action`.

  ### Event Names

  Possible events names for any of the responding approaches described above are:

  Touch events: 'touchStart', 'touchMove', 'touchEnd', 'touchCancel'

  Keyboard events: 'keyDown', 'keyUp', 'keyPress'

  Mouse events: 'mouseDown', 'mouseUp', 'contextMenu', 'click', 'doubleClick', 'mouseMove',
  'focusIn', 'focusOut', 'mouseEnter', 'mouseLeave'

  Form events: 'submit', 'change', 'focusIn', 'focusOut', 'input'

  HTML5 drag and drop events: 'dragStart', 'drag', 'dragEnter', 'dragLeave', 'drop', 'dragEnd'

  ## Handlebars `{{view}}` Helper

  Other `Ember.View` instances can be included as part of a view's template by using the `{{view}}`
  Handlebars helper. See `Handlebars.helpers.view` for additional information.

  @class View
  @namespace Ember
  @extends Ember.Object
  @uses Ember.Evented
*/
Ember.View = Ember.CoreView.extend(
/** @scope Ember.View.prototype */ {

  concatenatedProperties: ['classNames', 'classNameBindings', 'attributeBindings'],

  /**
    @property isView
    @type Boolean
    @default true
    @final
  */
  isView: true,

  // ..........................................................
  // TEMPLATE SUPPORT
  //

  /**
    The name of the template to lookup if no template is provided.

    Ember.View will look for a template with this name in this view's
    `templates` object. By default, this will be a global object
    shared in `Ember.TEMPLATES`.

    @property templateName
    @type String
    @default null
  */
  templateName: null,

  /**
    The name of the layout to lookup if no layout is provided.

    Ember.View will look for a template with this name in this view's
    `templates` object. By default, this will be a global object
    shared in `Ember.TEMPLATES`.

    @property layoutName
    @type String
    @default null
  */
  layoutName: null,

  /**
    The hash in which to look for `templateName`.

    @property templates
    @type Ember.Object
    @default Ember.TEMPLATES
  */
  templates: Ember.TEMPLATES,

  /**
    The template used to render the view. This should be a function that
    accepts an optional context parameter and returns a string of HTML that
    will be inserted into the DOM relative to its parent view.

    In general, you should set the `templateName` property instead of setting
    the template yourself.

    @property template
    @type Function
  */
  template: Ember.computed(function(key, value) {
    if (value !== undefined) { return value; }

    var templateName = get(this, 'templateName'),
        template = this.templateForName(templateName, 'template');

    return template || get(this, 'defaultTemplate');
  }).property('templateName'),

  /**
    The controller managing this view. If this property is set, it will be
    made available for use by the template.

    @property controller
    @type Object
  */
  controller: Ember.computed(function(key, value) {
    var parentView;

    if (arguments.length === 2) {
      return value;
    } else {
      parentView = get(this, 'parentView');
      return parentView ? get(parentView, 'controller') : null;
    }
  }).property(),

  /**
    A view may contain a layout. A layout is a regular template but
    supersedes the `template` property during rendering. It is the
    responsibility of the layout template to retrieve the `template`
    property from the view (or alternatively, call `Handlebars.helpers.yield`,
    `{{yield}}`) to render it in the correct location.

    This is useful for a view that has a shared wrapper, but which delegates
    the rendering of the contents of the wrapper to the `template` property
    on a subclass.

    @property layout
    @type Function
  */
  layout: Ember.computed(function(key, value) {
    if (arguments.length === 2) { return value; }

    var layoutName = get(this, 'layoutName'),
        layout = this.templateForName(layoutName, 'layout');

    return layout || get(this, 'defaultLayout');
  }).property('layoutName'),

  templateForName: function(name, type) {
    if (!name) { return; }

    var templates = get(this, 'templates'),
        template = get(templates, name);

    if (!template) {
     throw new Ember.Error(fmt('%@ - Unable to find %@ "%@".', [this, type, name]));
    }

    return template;
  },

  /**
    The object from which templates should access properties.

    This object will be passed to the template function each time the render
    method is called, but it is up to the individual function to decide what
    to do with it.

    By default, this will be the view's controller.

    @property context
    @type Object
  */
  context: Ember.computed(function(key, value) {
    if (arguments.length === 2) {
      set(this, '_context', value);
      return value;
    } else {
      return get(this, '_context');
    }
  }).volatile(),

  /**
    @private

    Private copy of the view's template context. This can be set directly
    by Handlebars without triggering the observer that causes the view
    to be re-rendered.

    The context of a view is looked up as follows:

    1. Supplied context (usually by Handlebars)
    2. Specified controller
    3. `parentView`'s context (for a child of a ContainerView)

    The code in Handlebars that overrides the `_context` property first
    checks to see whether the view has a specified controller. This is
    something of a hack and should be revisited.

    @property _context
  */
  _context: Ember.computed(function(key, value) {
    var parentView, controller;

    if (arguments.length === 2) {
      return value;
    }

    if (controller = get(this, 'controller')) {
      return controller;
    }

    parentView = get(this, '_parentView');
    if (parentView) {
      return get(parentView, '_context');
    }

    return this;
  }),

  /**
    @private

    If a value that affects template rendering changes, the view should be
    re-rendered to reflect the new value.

    @method _displayPropertyDidChange
  */
  _displayPropertyDidChange: Ember.observer(function() {
    this.rerender();
  }, 'context', 'controller'),

  /**
    If false, the view will appear hidden in DOM.

    @property isVisible
    @type Boolean
    @default null
  */
  isVisible: true,

  /**
    @private

    Array of child views. You should never edit this array directly.
    Instead, use appendChild and removeFromParent.

    @property childViews
    @type Array
    @default []
  */
  childViews: childViewsProperty,

  _childViews: [],

  // When it's a virtual view, we need to notify the parent that their
  // childViews will change.
  _childViewsWillChange: Ember.beforeObserver(function() {
    if (this.isVirtual) {
      var parentView = get(this, 'parentView');
      if (parentView) { Ember.propertyWillChange(parentView, 'childViews'); }
    }
  }, 'childViews'),

  // When it's a virtual view, we need to notify the parent that their
  // childViews did change.
  _childViewsDidChange: Ember.observer(function() {
    if (this.isVirtual) {
      var parentView = get(this, 'parentView');
      if (parentView) { Ember.propertyDidChange(parentView, 'childViews'); }
    }
  }, 'childViews'),

  /**
    Return the nearest ancestor that is an instance of the provided
    class.

    @property nearestInstanceOf
    @param {Class} klass Subclass of Ember.View (or Ember.View itself)
    @return Ember.View
    @deprecated
  */
  nearestInstanceOf: function(klass) {
    Ember.deprecate("nearestInstanceOf is deprecated and will be removed from future releases. Use nearestOfType.");
    var view = get(this, 'parentView');

    while (view) {
      if(view instanceof klass) { return view; }
      view = get(view, 'parentView');
    }
  },

  /**
    Return the nearest ancestor that is an instance of the provided
    class or mixin.

    @property nearestOfType
    @param {Class,Mixin} klass Subclass of Ember.View (or Ember.View itself),
           or an instance of Ember.Mixin.
    @return Ember.View
  */
  nearestOfType: function(klass) {
    var view = get(this, 'parentView'),
        isOfType = klass instanceof Ember.Mixin ?
                   function(view) { return klass.detect(view); } :
                   function(view) { return klass.detect(view.constructor); };

    while (view) {
      if( isOfType(view) ) { return view; }
      view = get(view, 'parentView');
    }
  },

  /**
    Return the nearest ancestor that has a given property.

    @property nearestWithProperty
    @param {String} property A property name
    @return Ember.View
  */
  nearestWithProperty: function(property) {
    var view = get(this, 'parentView');

    while (view) {
      if (property in view) { return view; }
      view = get(view, 'parentView');
    }
  },

  /**
    Return the nearest ancestor whose parent is an instance of
    `klass`.

    @property nearestChildOf
    @param {Class} klass Subclass of Ember.View (or Ember.View itself)
    @return Ember.View
  */
  nearestChildOf: function(klass) {
    var view = get(this, 'parentView');

    while (view) {
      if(get(view, 'parentView') instanceof klass) { return view; }
      view = get(view, 'parentView');
    }
  },

  /**
    Return the nearest ancestor that is an Ember.CollectionView

    @property collectionView
    @return Ember.CollectionView
  */
  collectionView: Ember.computed(function() {
    return this.nearestOfType(Ember.CollectionView);
  }),

  /**
    Return the nearest ancestor that is a direct child of
    an Ember.CollectionView

    @property itemView
    @return Ember.View
  */
  itemView: Ember.computed(function() {
    return this.nearestChildOf(Ember.CollectionView);
  }),

  /**
    Return the nearest ancestor that has the property
    `content`.

    @property contentView
    @return Ember.View
  */
  contentView: Ember.computed(function() {
    return this.nearestWithProperty('content');
  }),

  /**
    @private

    When the parent view changes, recursively invalidate
    collectionView, itemView, and contentView

    @method _parentViewDidChange
  */
  _parentViewDidChange: Ember.observer(function() {
    if (this.isDestroying) { return; }

    this.invokeRecursively(function(view) {
      view.propertyDidChange('collectionView');
      view.propertyDidChange('itemView');
      view.propertyDidChange('contentView');
    });

    if (get(this, 'parentView.controller') && !get(this, 'controller')) {
      this.notifyPropertyChange('controller');
    }
  }, '_parentView'),

  _controllerDidChange: Ember.observer(function() {
    if (this.isDestroying) { return; }

    this.forEachChildView(function(view) {
      view.propertyDidChange('controller');
    });
  }, 'controller'),

  cloneKeywords: function() {
    var templateData = get(this, 'templateData');

    var keywords = templateData ? Ember.copy(templateData.keywords) : {};
    set(keywords, 'view', get(this, 'concreteView'));
    set(keywords, 'controller', get(this, 'controller'));

    return keywords;
  },

  /**
    Called on your view when it should push strings of HTML into a
    Ember.RenderBuffer. Most users will want to override the `template`
    or `templateName` properties instead of this method.

    By default, Ember.View will look for a function in the `template`
    property and invoke it with the value of `context`. The value of
    `context` will be the view's controller unless you override it.

    @method render
    @param {Ember.RenderBuffer} buffer The render buffer
  */
  render: function(buffer) {
    // If this view has a layout, it is the responsibility of the
    // the layout to render the view's template. Otherwise, render the template
    // directly.
    var template = get(this, 'layout') || get(this, 'template');

    if (template) {
      var context = get(this, 'context');
      var keywords = this.cloneKeywords();

      var data = {
        view: this,
        buffer: buffer,
        isRenderData: true,
        keywords: keywords
      };

      // Invoke the template with the provided template context, which
      // is the view's controller by default. A hash of data is also passed that provides
      // the template with access to the view and render buffer.

      Ember.assert('template must be a function. Did you mean to call Ember.Handlebars.compile("...") or specify templateName instead?', typeof template === 'function');
      // The template should write directly to the render buffer instead
      // of returning a string.
      var output = template(context, { data: data });

      // If the template returned a string instead of writing to the buffer,
      // push the string onto the buffer.
      if (output !== undefined) { buffer.push(output); }
    }
  },

  invokeForState: function(name) {
    var stateName = this.state, args, fn;

    // try to find the function for the state in the cache
    if (fn = invokeForState[stateName][name]) {
      args = a_slice.call(arguments);
      args[0] = this;

      return fn.apply(this, args);
    }

    // otherwise, find and cache the function for this state
    var parent = this, states = parent.states, state;

    while (states) {
      state = states[stateName];

      while (state) {
        fn = state[name];

        if (fn) {
          invokeForState[stateName][name] = fn;

          args = a_slice.call(arguments, 1);
          args.unshift(this);

          return fn.apply(this, args);
        }

        state = state.parentState;
      }

      states = states.parent;
    }
  },

  /**
    Renders the view again. This will work regardless of whether the
    view is already in the DOM or not. If the view is in the DOM, the
    rendering process will be deferred to give bindings a chance
    to synchronize.

    If children were added during the rendering process using `appendChild`,
    `rerender` will remove them, because they will be added again
    if needed by the next `render`.

    In general, if the display of your view changes, you should modify
    the DOM element directly instead of manually calling `rerender`, which can
    be slow.

    @method rerender
  */
  rerender: function() {
    return this.invokeForState('rerender');
  },

  clearRenderedChildren: function() {
    var lengthBefore = this.lengthBeforeRender,
        lengthAfter  = this.lengthAfterRender;

    // If there were child views created during the last call to render(),
    // remove them under the assumption that they will be re-created when
    // we re-render.

    // VIEW-TODO: Unit test this path.
    var childViews = this._childViews;
    for (var i=lengthAfter-1; i>=lengthBefore; i--) {
      if (childViews[i]) { childViews[i].destroy(); }
    }
  },

  /**
    @private

    Iterates over the view's `classNameBindings` array, inserts the value
    of the specified property into the `classNames` array, then creates an
    observer to update the view's element if the bound property ever changes
    in the future.

    @method _applyClassNameBindings
  */
  _applyClassNameBindings: function() {
    var classBindings = get(this, 'classNameBindings'),
        classNames = get(this, 'classNames'),
        elem, newClass, dasherizedClass;

    if (!classBindings) { return; }

    // Loop through all of the configured bindings. These will be either
    // property names ('isUrgent') or property paths relative to the view
    // ('content.isUrgent')
    a_forEach(classBindings, function(binding) {

      // Variable in which the old class value is saved. The observer function
      // closes over this variable, so it knows which string to remove when
      // the property changes.
      var oldClass;
      // Extract just the property name from bindings like 'foo:bar'
      var parsedPath = Ember.View._parsePropertyPath(binding);

      // Set up an observer on the context. If the property changes, toggle the
      // class name.
      var observer = function() {
        // Get the current value of the property
        newClass = this._classStringForProperty(binding);
        elem = this.$();
        if (!elem) {
          removeObserver(this, parsedPath.path, observer);
          return;
        }

        // If we had previously added a class to the element, remove it.
        if (oldClass) {
          elem.removeClass(oldClass);
          // Also remove from classNames so that if the view gets rerendered,
          // the class doesn't get added back to the DOM.
          classNames.removeObject(oldClass);
        }

        // If necessary, add a new class. Make sure we keep track of it so
        // it can be removed in the future.
        if (newClass) {
          elem.addClass(newClass);
          oldClass = newClass;
        } else {
          oldClass = null;
        }
      };

      // Get the class name for the property at its current value
      dasherizedClass = this._classStringForProperty(binding);

      if (dasherizedClass) {
        // Ensure that it gets into the classNames array
        // so it is displayed when we render.
        classNames.push(dasherizedClass);

        // Save a reference to the class name so we can remove it
        // if the observer fires. Remember that this variable has
        // been closed over by the observer.
        oldClass = dasherizedClass;
      }

      addObserver(this, parsedPath.path, observer);

      this.one('willClearRender', function() {
        removeObserver(this, parsedPath.path, observer);
      });
    }, this);
  },

  /**
    @private

    Iterates through the view's attribute bindings, sets up observers for each,
    then applies the current value of the attributes to the passed render buffer.

    @method _applyAttributeBindings
    @param {Ember.RenderBuffer} buffer
  */
  _applyAttributeBindings: function(buffer) {
    var attributeBindings = get(this, 'attributeBindings'),
        attributeValue, elem, type;

    if (!attributeBindings) { return; }

    a_forEach(attributeBindings, function(binding) {
      var split = binding.split(':'),
          property = split[0],
          attributeName = split[1] || property;

      // Create an observer to add/remove/change the attribute if the
      // JavaScript property changes.
      var observer = function() {
        elem = this.$();
        if (!elem) { return; }

        attributeValue = get(this, property);

        Ember.View.applyAttributeBindings(elem, attributeName, attributeValue);
      };

      addObserver(this, property, observer);

      this.one('willClearRender', function() {
        removeObserver(this, property, observer);
      });

      // Determine the current value and add it to the render buffer
      // if necessary.
      attributeValue = get(this, property);
      Ember.View.applyAttributeBindings(buffer, attributeName, attributeValue);
    }, this);
  },

  /**
    @private

    Given a property name, returns a dasherized version of that
    property name if the property evaluates to a non-falsy value.

    For example, if the view has property `isUrgent` that evaluates to true,
    passing `isUrgent` to this method will return `"is-urgent"`.

    @method _classStringForProperty
    @param property
  */
  _classStringForProperty: function(property) {
    var parsedPath = Ember.View._parsePropertyPath(property);
    var path = parsedPath.path;

    var val = get(this, path);
    if (val === undefined && Ember.isGlobalPath(path)) {
      val = get(Ember.lookup, path);
    }

    return Ember.View._classStringForValue(path, val, parsedPath.className, parsedPath.falsyClassName);
  },

  // ..........................................................
  // ELEMENT SUPPORT
  //

  /**
    Returns the current DOM element for the view.

    @property element
    @type DOMElement
  */
  element: Ember.computed(function(key, value) {
    if (value !== undefined) {
      return this.invokeForState('setElement', value);
    } else {
      return this.invokeForState('getElement');
    }
  }).property('_parentView'),

  /**
    Returns a jQuery object for this view's element. If you pass in a selector
    string, this method will return a jQuery object, using the current element
    as its buffer.

    For example, calling `view.$('li')` will return a jQuery object containing
    all of the `li` elements inside the DOM element of this view.

    @property $
    @param {String} [selector] a jQuery-compatible selector string
    @return {jQuery} the CoreQuery object for the DOM node
  */
  $: function(sel) {
    return this.invokeForState('$', sel);
  },

  mutateChildViews: function(callback) {
    var childViews = this._childViews,
        idx = childViews.length,
        view;

    while(--idx >= 0) {
      view = childViews[idx];
      callback.call(this, view, idx);
    }

    return this;
  },

  forEachChildView: function(callback) {
    var childViews = this._childViews;

    if (!childViews) { return this; }

    var len = childViews.length,
        view, idx;

    for(idx = 0; idx < len; idx++) {
      view = childViews[idx];
      callback.call(this, view);
    }

    return this;
  },

  /**
    Appends the view's element to the specified parent element.

    If the view does not have an HTML representation yet, `createElement()`
    will be called automatically.

    Note that this method just schedules the view to be appended; the DOM
    element will not be appended to the given element until all bindings have
    finished synchronizing.

    This is not typically a function that you will need to call directly
    when building your application. You might consider using Ember.ContainerView
    instead. If you do need to use appendTo, be sure that the target element you
    are providing is associated with an Ember.Application and does not have an
    ancestor element that is associated with an Ember view.

    @method appendTo
    @param {String|DOMElement|jQuery} A selector, element, HTML string, or jQuery object
    @return {Ember.View} receiver
  */
  appendTo: function(target) {
    // Schedule the DOM element to be created and appended to the given
    // element after bindings have synchronized.
    this._insertElementLater(function() {
      Ember.assert("You cannot append to an existing Ember.View. Consider using Ember.ContainerView instead.", !Ember.$(target).is('.ember-view') && !Ember.$(target).parents().is('.ember-view'));
      this.$().appendTo(target);
    });

    return this;
  },

  /**
    Replaces the content of the specified parent element with this view's element.
    If the view does not have an HTML representation yet, `createElement()`
    will be called automatically.

    Note that this method just schedules the view to be appended; the DOM
    element will not be appended to the given element until all bindings have
    finished synchronizing

    @method replaceIn
    @param {String|DOMElement|jQuery} A selector, element, HTML string, or jQuery object
    @return {Ember.View} received
  */
  replaceIn: function(target) {
    Ember.assert("You cannot replace an existing Ember.View. Consider using Ember.ContainerView instead.", !Ember.$(target).is('.ember-view') && !Ember.$(target).parents().is('.ember-view'));

    this._insertElementLater(function() {
      Ember.$(target).empty();
      this.$().appendTo(target);
    });

    return this;
  },

  /**
    @private

    Schedules a DOM operation to occur during the next render phase. This
    ensures that all bindings have finished synchronizing before the view is
    rendered.

    To use, pass a function that performs a DOM operation..

    Before your function is called, this view and all child views will receive
    the `willInsertElement` event. After your function is invoked, this view
    and all of its child views will receive the `didInsertElement` event.

        view._insertElementLater(function() {
          this.createElement();
          this.$().appendTo('body');
        });

    @method _insertElementLater
    @param {Function} fn the function that inserts the element into the DOM
  */
  _insertElementLater: function(fn) {
    this._scheduledInsert = Ember.run.scheduleOnce('render', this, '_insertElement', fn);
  },

  /**
   @private
  */
  _insertElement: function (fn) {
    this._scheduledInsert = null;
    this.invokeForState('insertElement', fn);
  },

  /**
    Appends the view's element to the document body. If the view does
    not have an HTML representation yet, `createElement()` will be called
    automatically.

    Note that this method just schedules the view to be appended; the DOM
    element will not be appended to the document body until all bindings have
    finished synchronizing.

    @method append
    @return {Ember.View} receiver
  */
  append: function() {
    return this.appendTo(document.body);
  },

  /**
    Removes the view's element from the element to which it is attached.

    @method remove
    @return {Ember.View} receiver
  */
  remove: function() {
    // What we should really do here is wait until the end of the run loop
    // to determine if the element has been re-appended to a different
    // element.
    // In the interim, we will just re-render if that happens. It is more
    // important than elements get garbage collected.
    this.destroyElement();
    this.invokeRecursively(function(view) {
      view.clearRenderedChildren();
    });
  },

  /**
    The ID to use when trying to locate the element in the DOM. If you do not
    set the elementId explicitly, then the view's GUID will be used instead.
    This ID must be set at the time the view is created.

    @property elementId
    @type String
  */
  elementId: Ember.computed(function(key, value) {
    return value !== undefined ? value : Ember.guidFor(this);
  }),

  // TODO: Perhaps this should be removed from the production build somehow.
  _elementIdDidChange: Ember.beforeObserver(function() {
    throw "Changing a view's elementId after creation is not allowed.";
  }, 'elementId'),

  /**
    Attempts to discover the element in the parent element. The default
    implementation looks for an element with an ID of elementId (or the view's
    guid if elementId is null). You can override this method to provide your
    own form of lookup. For example, if you want to discover your element
    using a CSS class name instead of an ID.

    @method findElementInParentElement
    @param {DOMElement} parentElement The parent's DOM element
    @return {DOMElement} The discovered element
  */
  findElementInParentElement: function(parentElem) {
    var id = "#" + get(this, 'elementId');
    return Ember.$(id)[0] || Ember.$(id, parentElem)[0];
  },

  /**
    Creates a DOM representation of the view and all of its
    child views by recursively calling the `render()` method.

    After the element has been created, `didInsertElement` will
    be called on this view and all of its child views.

    @method createElement
    @return {Ember.View} receiver
  */
  createElement: function() {
    if (get(this, 'element')) { return this; }

    var buffer = this.renderToBuffer();
    set(this, 'element', buffer.element());

    return this;
  },

  /**
    Called when a view is going to insert an element into the DOM.

    @event willInsertElement
  */
  willInsertElement: Ember.K,

  /**
    Called when the element of the view has been inserted into the DOM.
    Override this function to do any set up that requires an element in the
    document body.

    @event didInsertElement
  */
  didInsertElement: Ember.K,

  /**
    Called when the view is about to rerender, but before anything has
    been torn down. This is a good opportunity to tear down any manual
    observers you have installed based on the DOM state

    @event willClearRender
  */
  willClearRender: Ember.K,

  /**
    @private

    Run this callback on the current view and recursively on child views.

    @method invokeRecursively
    @param fn {Function}
  */
  invokeRecursively: function(fn) {
    fn.call(this, this);

    this.forEachChildView(function(view) {
      view.invokeRecursively(fn);
    });
  },

  /**
    Invalidates the cache for a property on all child views.

    @method invalidateRecursively
  */
  invalidateRecursively: function(key) {
    this.forEachChildView(function(view) {
      view.propertyDidChange(key);
    });
  },

  /**
    @private

    Invokes the receiver's willInsertElement() method if it exists and then
    invokes the same on all child views.

    NOTE: In some cases this was called when the element existed. This no longer
    works so we let people know. We can remove this warning code later.

    @method _notifyWillInsertElement
  */
  _notifyWillInsertElement: function() {
    this.invokeRecursively(function(view) {
      view.trigger('willInsertElement');
    });
  },

  /**
    @private

    Invokes the receiver's didInsertElement() method if it exists and then
    invokes the same on all child views.

    @method _notifyDidInsertElement
  */
  _notifyDidInsertElement: function() {
    this.invokeRecursively(function(view) {
      view.trigger('didInsertElement');
    });
  },

  /**
    @private

    Triggers the `willClearRender` event (which invokes the `willClearRender()`
    method if it exists) on this view and all child views.

    @method _notifyWillClearRender
  */
  _notifyWillClearRender: function() {
    this.invokeRecursively(function(view) {
      view.trigger('willClearRender');
    });
  },

  /**
    Destroys any existing element along with the element for any child views
    as well. If the view does not currently have a element, then this method
    will do nothing.

    If you implement willDestroyElement() on your view, then this method will
    be invoked on your view before your element is destroyed to give you a
    chance to clean up any event handlers, etc.

    If you write a willDestroyElement() handler, you can assume that your
    didInsertElement() handler was called earlier for the same element.

    Normally you will not call or override this method yourself, but you may
    want to implement the above callbacks when it is run.

    @method destroyElement
    @return {Ember.View} receiver
  */
  destroyElement: function() {
    return this.invokeForState('destroyElement');
  },

  /**
    Called when the element of the view is going to be destroyed. Override
    this function to do any teardown that requires an element, like removing
    event listeners.

    @event willDestroyElement
  */
  willDestroyElement: function() {},

  /**
    @private

    Triggers the `willDestroyElement` event (which invokes the `willDestroyElement()`
    method if it exists) on this view and all child views.

    Before triggering `willDestroyElement`, it first triggers the `willClearRender`
    event recursively.

    @method _notifyWillDestroyElement
  */
  _notifyWillDestroyElement: function() {
    this._notifyWillClearRender();

    this.invokeRecursively(function(view) {
      view.trigger('willDestroyElement');
    });
  },

  _elementWillChange: Ember.beforeObserver(function() {
    this.forEachChildView(function(view) {
      Ember.propertyWillChange(view, 'element');
    });
  }, 'element'),

  /**
    @private

    If this view's element changes, we need to invalidate the caches of our
    child views so that we do not retain references to DOM elements that are
    no longer needed.

    @method _elementDidChange
  */
  _elementDidChange: Ember.observer(function() {
    this.forEachChildView(function(view) {
      Ember.propertyDidChange(view, 'element');
    });
  }, 'element'),

  /**
    Called when the parentView property has changed.

    @event parentViewDidChange
  */
  parentViewDidChange: Ember.K,

  instrumentName: 'render.view',

  instrumentDetails: function(hash) {
    hash.template = get(this, 'templateName');
    this._super(hash);
  },

  _renderToBuffer: function(parentBuffer, bufferOperation) {
    this.lengthBeforeRender = this._childViews.length;
    var buffer = this._super(parentBuffer, bufferOperation);
    this.lengthAfterRender = this._childViews.length;

    return buffer;
  },

  renderToBufferIfNeeded: function () {
    return this.invokeForState('renderToBufferIfNeeded', this);
  },

  beforeRender: function(buffer) {
    this.applyAttributesToBuffer(buffer);
  },

  afterRender: Ember.K,

  applyAttributesToBuffer: function(buffer) {
    // Creates observers for all registered class name and attribute bindings,
    // then adds them to the element.
    this._applyClassNameBindings();

    // Pass the render buffer so the method can apply attributes directly.
    // This isn't needed for class name bindings because they use the
    // existing classNames infrastructure.
    this._applyAttributeBindings(buffer);


    a_forEach(get(this, 'classNames'), function(name){ buffer.addClass(name); });
    buffer.id(get(this, 'elementId'));

    var role = get(this, 'ariaRole');
    if (role) {
      buffer.attr('role', role);
    }

    if (get(this, 'isVisible') === false) {
      buffer.style('display', 'none');
    }
  },

  // ..........................................................
  // STANDARD RENDER PROPERTIES
  //

  /**
    Tag name for the view's outer element. The tag name is only used when
    an element is first created. If you change the tagName for an element, you
    must destroy and recreate the view element.

    By default, the render buffer will use a `<div>` tag for views.

    @property tagName
    @type String
    @default null
  */

  // We leave this null by default so we can tell the difference between
  // the default case and a user-specified tag.
  tagName: null,

  /**
    The WAI-ARIA role of the control represented by this view. For example, a
    button may have a role of type 'button', or a pane may have a role of
    type 'alertdialog'. This property is used by assistive software to help
    visually challenged users navigate rich web applications.

    The full list of valid WAI-ARIA roles is available at:
    http://www.w3.org/TR/wai-aria/roles#roles_categorization

    @property ariaRole
    @type String
    @default null
  */
  ariaRole: null,

  /**
    Standard CSS class names to apply to the view's outer element. This
    property automatically inherits any class names defined by the view's
    superclasses as well.

    @property classNames
    @type Array
    @default ['ember-view']
  */
  classNames: ['ember-view'],

  /**
    A list of properties of the view to apply as class names. If the property
    is a string value, the value of that string will be applied as a class
    name.

        // Applies the 'high' class to the view element
        Ember.View.create({
          classNameBindings: ['priority']
          priority: 'high'
        });

    If the value of the property is a Boolean, the name of that property is
    added as a dasherized class name.

        // Applies the 'is-urgent' class to the view element
        Ember.View.create({
          classNameBindings: ['isUrgent']
          isUrgent: true
        });

    If you would prefer to use a custom value instead of the dasherized
    property name, you can pass a binding like this:

        // Applies the 'urgent' class to the view element
        Ember.View.create({
          classNameBindings: ['isUrgent:urgent']
          isUrgent: true
        });

    This list of properties is inherited from the view's superclasses as well.

    @property classNameBindings
    @type Array
    @default []
  */
  classNameBindings: [],

  /**
    A list of properties of the view to apply as attributes. If the property is
    a string value, the value of that string will be applied as the attribute.

        // Applies the type attribute to the element
        // with the value "button", like <div type="button">
        Ember.View.create({
          attributeBindings: ['type'],
          type: 'button'
        });

    If the value of the property is a Boolean, the name of that property is
    added as an attribute.

        // Renders something like <div enabled="enabled">
        Ember.View.create({
          attributeBindings: ['enabled'],
          enabled: true
        });

    @property attributeBindings
  */
  attributeBindings: [],

  // .......................................................
  // CORE DISPLAY METHODS
  //

  /**
    @private

    Setup a view, but do not finish waking it up.
    - configure childViews
    - register the view with the global views hash, which is used for event
      dispatch

    @method init
  */
  init: function() {
    this._super();

    // setup child views. be sure to clone the child views array first
    this._childViews = this._childViews.slice();

    Ember.assert("Only arrays are allowed for 'classNameBindings'", Ember.typeOf(this.classNameBindings) === 'array');
    this.classNameBindings = Ember.A(this.classNameBindings.slice());

    Ember.assert("Only arrays are allowed for 'classNames'", Ember.typeOf(this.classNames) === 'array');
    this.classNames = Ember.A(this.classNames.slice());

    var viewController = get(this, 'viewController');
    if (viewController) {
      viewController = get(viewController);
      if (viewController) {
        set(viewController, 'view', this);
      }
    }
  },

  appendChild: function(view, options) {
    return this.invokeForState('appendChild', view, options);
  },

  /**
    Removes the child view from the parent view.

    @method removeChild
    @param {Ember.View} view
    @return {Ember.View} receiver
  */
  removeChild: function(view) {
    // If we're destroying, the entire subtree will be
    // freed, and the DOM will be handled separately,
    // so no need to mess with childViews.
    if (this.isDestroying) { return; }

    // update parent node
    set(view, '_parentView', null);

    // remove view from childViews array.
    var childViews = this._childViews;

    Ember.EnumerableUtils.removeObject(childViews, view);

    this.propertyDidChange('childViews'); // HUH?! what happened to will change?

    return this;
  },

  /**
    Removes all children from the parentView.

    @method removeAllChildren
    @return {Ember.View} receiver
  */
  removeAllChildren: function() {
    return this.mutateChildViews(function(view) {
      this.removeChild(view);
    });
  },

  destroyAllChildren: function() {
    return this.mutateChildViews(function(view) {
      view.destroy();
    });
  },

  /**
    Removes the view from its parentView, if one is found. Otherwise
    does nothing.

    @method removeFromParent
    @return {Ember.View} receiver
  */
  removeFromParent: function() {
    var parent = get(this, '_parentView');

    // Remove DOM element from parent
    this.remove();

    if (parent) { parent.removeChild(this); }
    return this;
  },

  /**
    You must call `destroy` on a view to destroy the view (and all of its
    child views). This will remove the view from any parent node, then make
    sure that the DOM element managed by the view can be released by the
    memory manager.

    @method willDestroy
  */
  willDestroy: function() {
    // calling this._super() will nuke computed properties and observers,
    // so collect any information we need before calling super.
    var childViews = this._childViews,
        parent     = get(this, '_parentView'),
        childLen;

    // destroy the element -- this will avoid each child view destroying
    // the element over and over again...
    if (!this.removedFromDOM) { this.destroyElement(); }

    // remove from non-virtual parent view if viewName was specified
    if (this.viewName) {
      var nonVirtualParentView = get(this, 'parentView');
      if (nonVirtualParentView) {
        set(nonVirtualParentView, this.viewName, null);
      }
    }

    // remove from parent if found. Don't call removeFromParent,
    // as removeFromParent will try to remove the element from
    // the DOM again.
    if (parent) { parent.removeChild(this); }

    this.state = 'destroyed';

    childLen = childViews.length;
    for (var i=childLen-1; i>=0; i--) {
      childViews[i].removedFromDOM = true;
      childViews[i].destroy();
    }

    // next remove view from global hash
    if (!this.isVirtual) delete Ember.View.views[get(this, 'elementId')];
  },

  /**
    Instantiates a view to be added to the childViews array during view
    initialization. You generally will not call this method directly unless
    you are overriding createChildViews(). Note that this method will
    automatically configure the correct settings on the new view instance to
    act as a child of the parent.

    @method createChildView
    @param {Class} viewClass
    @param {Hash} [attrs] Attributes to add
    @return {Ember.View} new instance
  */
  createChildView: function(view, attrs) {
    if (Ember.CoreView.detect(view)) {
      attrs = attrs || {};
      attrs._parentView = this;
      attrs.templateData = attrs.templateData || get(this, 'templateData');

      view = view.create(attrs);

      // don't set the property on a virtual view, as they are invisible to
      // consumers of the view API
      if (view.viewName) { set(get(this, 'concreteView'), view.viewName, view); }
    } else {
      Ember.assert('You must pass instance or subclass of View', view instanceof Ember.CoreView);
      Ember.assert("You can only pass attributes when a class is provided", !attrs);

      if (!get(view, 'templateData')) {
        set(view, 'templateData', get(this, 'templateData'));
      }

      set(view, '_parentView', this);
    }

    return view;
  },

  becameVisible: Ember.K,
  becameHidden: Ember.K,

  /**
    @private

    When the view's `isVisible` property changes, toggle the visibility
    element of the actual DOM element.

    @method _isVisibleDidChange
  */
  _isVisibleDidChange: Ember.observer(function() {
    var $el = this.$();
    if (!$el) { return; }

    var isVisible = get(this, 'isVisible');

    $el.toggle(isVisible);

    if (this._isAncestorHidden()) { return; }

    if (isVisible) {
      this._notifyBecameVisible();
    } else {
      this._notifyBecameHidden();
    }
  }, 'isVisible'),

  _notifyBecameVisible: function() {
    this.trigger('becameVisible');

    this.forEachChildView(function(view) {
      var isVisible = get(view, 'isVisible');

      if (isVisible || isVisible === null) {
        view._notifyBecameVisible();
      }
    });
  },

  _notifyBecameHidden: function() {
    this.trigger('becameHidden');
    this.forEachChildView(function(view) {
      var isVisible = get(view, 'isVisible');

      if (isVisible || isVisible === null) {
        view._notifyBecameHidden();
      }
    });
  },

  _isAncestorHidden: function() {
    var parent = get(this, 'parentView');

    while (parent) {
      if (get(parent, 'isVisible') === false) { return true; }

      parent = get(parent, 'parentView');
    }

    return false;
  },

  clearBuffer: function() {
    this.invokeRecursively(function(view) {
      this.buffer = null;
    });
  },

  transitionTo: function(state, children) {
    this.state = state;

    if (children !== false) {
      this.forEachChildView(function(view) {
        view.transitionTo(state);
      });
    }
  },

  // .......................................................
  // EVENT HANDLING
  //

  /**
    @private

    Handle events from `Ember.EventDispatcher`

    @method handleEvent
    @param eventName {String}
    @param evt {Event}
  */
  handleEvent: function(eventName, evt) {
    return this.invokeForState('handleEvent', eventName, evt);
  }

});

/*
  Describe how the specified actions should behave in the various
  states that a view can exist in. Possible states:

  * preRender: when a view is first instantiated, and after its
    element was destroyed, it is in the preRender state
  * inBuffer: once a view has been rendered, but before it has
    been inserted into the DOM, it is in the inBuffer state
  * inDOM: once a view has been inserted into the DOM it is in
    the inDOM state. A view spends the vast majority of its
    existence in this state.
  * destroyed: once a view has been destroyed (using the destroy
    method), it is in this state. No further actions can be invoked
    on a destroyed view.
*/

  // in the destroyed state, everything is illegal

  // before rendering has begun, all legal manipulations are noops.

  // inside the buffer, legal manipulations are done on the buffer

  // once the view has been inserted into the DOM, legal manipulations
  // are done on the DOM element.

var DOMManager = {
  prepend: function(view, html) {
    view.$().prepend(html);
  },

  after: function(view, html) {
    view.$().after(html);
  },

  html: function(view, html) {
    view.$().html(html);
  },

  replace: function(view) {
    var element = get(view, 'element');

    set(view, 'element', null);

    view._insertElementLater(function() {
      Ember.$(element).replaceWith(get(view, 'element'));
    });
  },

  remove: function(view) {
    view.$().remove();
  },

  empty: function(view) {
    view.$().empty();
  }
};

Ember.View.reopen({
  states: Ember.View.states,
  domManager: DOMManager
});

Ember.View.reopenClass({

  /**
    @private

    Parse a path and return an object which holds the parsed properties.

    For example a path like "content.isEnabled:enabled:disabled" wil return the
    following object:

        {
          path: "content.isEnabled",
          className: "enabled",
          falsyClassName: "disabled",
          classNames: ":enabled:disabled"
        }

    @method _parsePropertyPath
    @static
  */
  _parsePropertyPath: function(path) {
    var split = path.split(':'),
        propertyPath = split[0],
        classNames = "",
        className,
        falsyClassName;

    // check if the property is defined as prop:class or prop:trueClass:falseClass
    if (split.length > 1) {
      className = split[1];
      if (split.length === 3) { falsyClassName = split[2]; }

      classNames = ':' + className;
      if (falsyClassName) { classNames += ":" + falsyClassName; }
    }

    return {
      path: propertyPath,
      classNames: classNames,
      className: (className === '') ? undefined : className,
      falsyClassName: falsyClassName
    };
  },

  /**
    @private

    Get the class name for a given value, based on the path, optional className
    and optional falsyClassName.

    - if a className or falsyClassName has been specified:
      - if the value is truthy and className has been specified, className is returned
      - if the value is falsy and falsyClassName has been specified, falsyClassName is returned
      - otherwise null is returned
    - if the value is true, the dasherized last part of the supplied path is returned
    - if the value is not false, undefined or null, the value is returned
    - if none of the above rules apply, null is returned

    @method _classStringForValue
    @param path
    @param val
    @param className
    @param falsyClassName
    @static
  */
  _classStringForValue: function(path, val, className, falsyClassName) {
    // When using the colon syntax, evaluate the truthiness or falsiness
    // of the value to determine which className to return
    if (className || falsyClassName) {
      if (className && !!val) {
        return className;

      } else if (falsyClassName && !val) {
        return falsyClassName;

      } else {
        return null;
      }

    // If value is a Boolean and true, return the dasherized property
    // name.
    } else if (val === true) {
      // Normalize property path to be suitable for use
      // as a class name. For exaple, content.foo.barBaz
      // becomes bar-baz.
      var parts = path.split('.');
      return Ember.String.dasherize(parts[parts.length-1]);

    // If the value is not false, undefined, or null, return the current
    // value of the property.
    } else if (val !== false && val !== undefined && val !== null) {
      return val;

    // Nothing to display. Return null so that the old class is removed
    // but no new class is added.
    } else {
      return null;
    }
  }
});

/**
  Global views hash

  @property views
  @static
  @type Hash
*/
Ember.View.views = {};

// If someone overrides the child views computed property when
// defining their class, we want to be able to process the user's
// supplied childViews and then restore the original computed property
// at view initialization time. This happens in Ember.ContainerView's init
// method.
Ember.View.childViewsProperty = childViewsProperty;

Ember.View.applyAttributeBindings = function(elem, name, value) {
  var type = Ember.typeOf(value);
  var currentValue = elem.attr(name);

  // if this changes, also change the logic in ember-handlebars/lib/helpers/binding.js
  if ((type === 'string' || (type === 'number' && !isNaN(value))) && value !== currentValue) {
    elem.attr(name, value);
  } else if (value && type === 'boolean') {
    elem.attr(name, name);
  } else if (!value) {
    elem.removeAttr(name);
  }
};

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set;

Ember.View.states = {
  _default: {
    // appendChild is only legal while rendering the buffer.
    appendChild: function() {
      throw "You can't use appendChild outside of the rendering process";
    },

    $: function() {
      return undefined;
    },

    getElement: function() {
      return null;
    },

    // Handle events from `Ember.EventDispatcher`
    handleEvent: function() {
      return true; // continue event propagation
    },

    destroyElement: function(view) {
      set(view, 'element', null);
      if (view._scheduledInsert) {
        Ember.run.cancel(view._scheduledInsert);
        view._scheduledInsert = null;
      }
      return view;
    },

    renderToBufferIfNeeded: function () {
      return false;
    }
  }
};

Ember.View.reopen({
  states: Ember.View.states
});

})();



(function() {
/**
@module ember
@submodule ember-views
*/

Ember.View.states.preRender = {
  parentState: Ember.View.states._default,

  // a view leaves the preRender state once its element has been
  // created (createElement).
  insertElement: function(view, fn) {
    view.createElement();
    view._notifyWillInsertElement();
    // after createElement, the view will be in the hasElement state.
    fn.call(view);
    view.transitionTo('inDOM');
    view._notifyDidInsertElement();
  },

  renderToBufferIfNeeded: function(view) {
    return view.renderToBuffer();
  },

  empty: Ember.K,

  setElement: function(view, value) {
    if (value !== null) {
      view.transitionTo('hasElement');
    }
    return value;
  }
};

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set, meta = Ember.meta;

Ember.View.states.inBuffer = {
  parentState: Ember.View.states._default,

  $: function(view, sel) {
    // if we don't have an element yet, someone calling this.$() is
    // trying to update an element that isn't in the DOM. Instead,
    // rerender the view to allow the render method to reflect the
    // changes.
    view.rerender();
    return Ember.$();
  },

  // when a view is rendered in a buffer, rerendering it simply
  // replaces the existing buffer with a new one
  rerender: function(view) {
    Ember.deprecate("Something you did caused a view to re-render after it rendered but before it was inserted into the DOM. Because this is avoidable and the cause of significant performance issues in applications, this behavior is deprecated. If you want to use the debugger to find out what caused this, you can set ENV.RAISE_ON_DEPRECATION to true.");

    view._notifyWillClearRender();

    view.clearRenderedChildren();
    view.renderToBuffer(view.buffer, 'replaceWith');
  },

  // when a view is rendered in a buffer, appending a child
  // view will render that view and append the resulting
  // buffer into its buffer.
  appendChild: function(view, childView, options) {
    var buffer = view.buffer;

    childView = this.createChildView(childView, options);
    view._childViews.push(childView);

    childView.renderToBuffer(buffer);

    view.propertyDidChange('childViews');

    return childView;
  },

  // when a view is rendered in a buffer, destroying the
  // element will simply destroy the buffer and put the
  // state back into the preRender state.
  destroyElement: function(view) {
    view.clearBuffer();
    view._notifyWillDestroyElement();
    view.transitionTo('preRender');

    return view;
  },

  empty: function() {
    Ember.assert("Emptying a view in the inBuffer state is not allowed and should not happen under normal circumstances. Most likely there is a bug in your application. This may be due to excessive property change notifications.");
  },

  renderToBufferIfNeeded: function (view) {
    return view.buffer;
  },

  // It should be impossible for a rendered view to be scheduled for
  // insertion.
  insertElement: function() {
    throw "You can't insert an element that has already been rendered";
  },

  setElement: function(view, value) {
    if (value === null) {
      view.transitionTo('preRender');
    } else {
      view.clearBuffer();
      view.transitionTo('hasElement');
    }

    return value;
  }
};


})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set, meta = Ember.meta;

Ember.View.states.hasElement = {
  parentState: Ember.View.states._default,

  $: function(view, sel) {
    var elem = get(view, 'element');
    return sel ? Ember.$(sel, elem) : Ember.$(elem);
  },

  getElement: function(view) {
    var parent = get(view, 'parentView');
    if (parent) { parent = get(parent, 'element'); }
    if (parent) { return view.findElementInParentElement(parent); }
    return Ember.$("#" + get(view, 'elementId'))[0];
  },

  setElement: function(view, value) {
    if (value === null) {
      view.transitionTo('preRender');
    } else {
      throw "You cannot set an element to a non-null value when the element is already in the DOM.";
    }

    return value;
  },

  // once the view has been inserted into the DOM, rerendering is
  // deferred to allow bindings to synchronize.
  rerender: function(view) {
    view._notifyWillClearRender();

    view.clearRenderedChildren();

    view.domManager.replace(view);
    return view;
  },

  // once the view is already in the DOM, destroying it removes it
  // from the DOM, nukes its element, and puts it back into the
  // preRender state if inDOM.

  destroyElement: function(view) {
    view._notifyWillDestroyElement();
    view.domManager.remove(view);
    set(view, 'element', null);
    if (view._scheduledInsert) {
      Ember.run.cancel(view._scheduledInsert);
      view._scheduledInsert = null;
    }
    return view;
  },

  empty: function(view) {
    var _childViews = view._childViews, len, idx;
    if (_childViews) {
      len = _childViews.length;
      for (idx = 0; idx < len; idx++) {
        _childViews[idx]._notifyWillDestroyElement();
      }
    }
    view.domManager.empty(view);
  },

  // Handle events from `Ember.EventDispatcher`
  handleEvent: function(view, eventName, evt) {
    if (view.has(eventName)) {
      // Handler should be able to re-dispatch events, so we don't
      // preventDefault or stopPropagation.
      return view.trigger(eventName, evt);
    } else {
      return true; // continue event propagation
    }
  }
};

Ember.View.states.inDOM = {
  parentState: Ember.View.states.hasElement,

  insertElement: function(view, fn) {
    throw "You can't insert an element into the DOM that has already been inserted";
  }
};

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var destroyedError = "You can't call %@ on a destroyed view", fmt = Ember.String.fmt;

Ember.View.states.destroyed = {
  parentState: Ember.View.states._default,

  appendChild: function() {
    throw fmt(destroyedError, ['appendChild']);
  },
  rerender: function() {
    throw fmt(destroyedError, ['rerender']);
  },
  destroyElement: function() {
    throw fmt(destroyedError, ['destroyElement']);
  },
  empty: function() {
    throw fmt(destroyedError, ['empty']);
  },

  setElement: function() {
    throw fmt(destroyedError, ["set('element', ...)"]);
  },

  renderToBufferIfNeeded: function() {
    throw fmt(destroyedError, ["renderToBufferIfNeeded"]);
  },

  // Since element insertion is scheduled, don't do anything if
  // the view has been destroyed between scheduling and execution
  insertElement: Ember.K
};


})();



(function() {

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set, meta = Ember.meta;
var forEach = Ember.EnumerableUtils.forEach;

var childViewsProperty = Ember.computed(function() {
  return get(this, '_childViews');
}).property('_childViews');

/**
  A `ContainerView` is an `Ember.View` subclass that allows for manual or programatic
  management of a view's `childViews` array that will correctly update the `ContainerView`
  instance's rendered DOM representation.

  ## Setting Initial Child Views
  The initial array of child views can be set in one of two ways. You can provide
  a `childViews` property at creation time that contains instance of `Ember.View`:

  ``` javascript
  aContainer = Ember.ContainerView.create({
    childViews: [Ember.View.create(), Ember.View.create()]
  });
  ```

  You can also provide a list of property names whose values are instances of `Ember.View`:

  ``` javascript
  aContainer = Ember.ContainerView.create({
    childViews: ['aView', 'bView', 'cView'],
    aView: Ember.View.create(),
    bView: Ember.View.create()
    cView: Ember.View.create()
  });
  ```

  The two strategies can be combined:

  ``` javascript
  aContainer = Ember.ContainerView.create({
    childViews: ['aView', Ember.View.create()],
    aView: Ember.View.create()
  });
  ```

  Each child view's rendering will be inserted into the container's rendered HTML in the same
  order as its position in the `childViews` property.

  ## Adding and Removing Child Views
  The views in a container's `childViews` array should be added and removed by manipulating
  the `childViews` property directly.

  To remove a view pass that view into a `removeObject` call on the container's `childViews` property.

  Given an empty `<body>` the following code

  ``` javascript
  aContainer = Ember.ContainerView.create({
    classNames: ['the-container'],
    childViews: ['aView', 'bView'],
    aView: Ember.View.create({
      template: Ember.Handlebars.compile("A")
    }),
    bView: Ember.View.create({
      template: Ember.Handlebars.compile("B")
    })
  });

  aContainer.appendTo('body');
  ``` 

  Results in the HTML

  ``` html
  <div class="ember-view the-container">
    <div class="ember-view">A</div>
    <div class="ember-view">B</div>
  </div>
  ```

  Removing a view

  ``` javascript
  aContainer.get('childViews'); // [aContainer.aView, aContainer.bView]
  aContainer.get('childViews').removeObject(aContainer.get('bView'));
  aContainer.get('childViews'); // [aContainer.aView]
  ```

  Will result in the following HTML

  ``` html
  <div class="ember-view the-container">
    <div class="ember-view">A</div>
  </div>
  ```


  Similarly, adding a child view is accomplished by adding `Ember.View` instances to the
  container's `childViews` property.

  Given an empty `<body>` the following code

  ``` javascript
  aContainer = Ember.ContainerView.create({
    classNames: ['the-container'],
    childViews: ['aView', 'bView'],
    aView: Ember.View.create({
      template: Ember.Handlebars.compile("A")
    }),
    bView: Ember.View.create({
      template: Ember.Handlebars.compile("B")
    })
  });

  aContainer.appendTo('body');
  ```

  Results in the HTML

  ``` html
  <div class="ember-view the-container">
    <div class="ember-view">A</div>
    <div class="ember-view">B</div>
  </div>
  ```

  Adding a view

  ``` javascript
  AnotherViewClass = Ember.View.extend({
    template: Ember.Handlebars.compile("Another view")
  });

  aContainer.get('childViews'); // [aContainer.aView, aContainer.bView]
  aContainer.get('childViews').pushObject(AnotherViewClass.create());
  aContainer.get('childViews'); // [aContainer.aView, aContainer.bView, <AnotherViewClass instance>]
  ```

  Will result in the following HTML

  ``` html
  <div class="ember-view the-container">
    <div class="ember-view">A</div>
    <div class="ember-view">B</div>
    <div class="ember-view">Another view</div>
  </div>
  ```


  Direct manipulation of childViews presence or absence in the DOM via calls to
  `remove` or `removeFromParent` or calls to a container's `removeChild` may not behave
  correctly.

  Calling `remove()` on a child view will remove the view's HTML, but it will remain as part of its
  container's `childView`s property.

  Calling `removeChild()` on the container will remove the passed view instance from the container's
  `childView`s but keep its HTML within the container's rendered view.

  Calling `removeFromParent()` behaves as expected but should be avoided in favor of direct
  manipulation of a container's `childViews` property.

  ``` javascript
  aContainer = Ember.ContainerView.create({
    classNames: ['the-container'],
    childViews: ['aView', 'bView'],
    aView: Ember.View.create({
      template: Ember.Handlebars.compile("A")
    }),
    bView: Ember.View.create({
      template: Ember.Handlebars.compile("B")
    })
  });

  aContainer.appendTo('body');
  ```

  Results in the HTML

  ``` html
  <div class="ember-view the-container">
    <div class="ember-view">A</div>
    <div class="ember-view">B</div>
  </div>
  ```

  Calling `aContainer.get('aView').removeFromParent()` will result in the following HTML

  ``` html
  <div class="ember-view the-container">
    <div class="ember-view">B</div>
  </div>
  ```

  And the `Ember.View` instance stored in `aContainer.aView` will be removed from `aContainer`'s
  `childViews` array.

  ## Templates and Layout

  A `template`, `templateName`, `defaultTemplate`, `layout`, `layoutName` or `defaultLayout`
  property on a container view will not result in the template or layout being rendered.
  The HTML contents of a `Ember.ContainerView`'s DOM representation will only be the rendered HTML
  of its child views.

  ## Binding a View to Display

  If you would like to display a single view in your ContainerView, you can set its `currentView`
  property. When the `currentView` property is set to a view instance, it will be added to the
  ContainerView's `childViews` array. If the `currentView` property is later changed to a
  different view, the new view will replace the old view. If `currentView` is set to `null`, the
  last `currentView` will be removed.

  This functionality is useful for cases where you want to bind the display of a ContainerView to
  a controller or state manager. For example, you can bind the `currentView` of a container to
  a controller like this:

  ``` javascript
  App.appController = Ember.Object.create({
    view: Ember.View.create({
      templateName: 'person_template'
    })
  });
  ```

  ``` handlebars
  {{view Ember.ContainerView currentViewBinding="App.appController.view"}}
  ```

  @class ContainerView
  @namespace Ember
  @extends Ember.View
*/

Ember.ContainerView = Ember.View.extend({

  init: function() {
    this._super();

    var childViews = get(this, 'childViews');
    Ember.defineProperty(this, 'childViews', childViewsProperty);

    var _childViews = this._childViews;

    forEach(childViews, function(viewName, idx) {
      var view;

      if ('string' === typeof viewName) {
        view = get(this, viewName);
        view = this.createChildView(view);
        set(this, viewName, view);
      } else {
        view = this.createChildView(viewName);
      }

      _childViews[idx] = view;
    }, this);

    var currentView = get(this, 'currentView');
    if (currentView) _childViews.push(this.createChildView(currentView));

    // Make the _childViews array observable
    Ember.A(_childViews);

    // Sets up an array observer on the child views array. This
    // observer will detect when child views are added or removed
    // and update the DOM to reflect the mutation.
    get(this, 'childViews').addArrayObserver(this, {
      willChange: 'childViewsWillChange',
      didChange: 'childViewsDidChange'
    });
  },

  /**
    @private

    Instructs each child view to render to the passed render buffer.

    @method render
    @param {Ember.RenderBuffer} buffer the buffer to render to
  */
  render: function(buffer) {
    this.forEachChildView(function(view) {
      view.renderToBuffer(buffer);
    });
  },

  instrumentName: 'render.container',

  /**
    @private

    When the container view is destroyed, tear down the child views
    array observer.

    @method willDestroy
  */
  willDestroy: function() {
    get(this, 'childViews').removeArrayObserver(this, {
      willChange: 'childViewsWillChange',
      didChange: 'childViewsDidChange'
    });

    this._super();
  },

  /**
    @private

    When a child view is removed, destroy its element so that
    it is removed from the DOM.

    The array observer that triggers this action is set up in the
    `renderToBuffer` method.

    @method childViewsWillChange
    @param {Ember.Array} views the child views array before mutation
    @param {Number} start the start position of the mutation
    @param {Number} removed the number of child views removed
  **/
  childViewsWillChange: function(views, start, removed) {
    if (removed === 0) { return; }

    var changedViews = views.slice(start, start+removed);
    this.initializeViews(changedViews, null, null);

    this.invokeForState('childViewsWillChange', views, start, removed);
  },

  /**
    @private

    When a child view is added, make sure the DOM gets updated appropriately.

    If the view has already rendered an element, we tell the child view to
    create an element and insert it into the DOM. If the enclosing container view
    has already written to a buffer, but not yet converted that buffer into an
    element, we insert the string representation of the child into the appropriate
    place in the buffer.

    @method childViewsDidChange
    @param {Ember.Array} views the array of child views afte the mutation has occurred
    @param {Number} start the start position of the mutation
    @param {Number} removed the number of child views removed
    @param {Number} the number of child views added
  */
  childViewsDidChange: function(views, start, removed, added) {
    var len = get(views, 'length');

    // No new child views were added; bail out.
    if (added === 0) return;

    var changedViews = views.slice(start, start+added);
    this.initializeViews(changedViews, this, get(this, 'templateData'));

    // Let the current state handle the changes
    this.invokeForState('childViewsDidChange', views, start, added);
  },

  initializeViews: function(views, parentView, templateData) {
    forEach(views, function(view) {
      set(view, '_parentView', parentView);

      if (!get(view, 'templateData')) {
        set(view, 'templateData', templateData);
      }
    });
  },

  currentView: null,

  _currentViewWillChange: Ember.beforeObserver(function() {
    var childViews = get(this, 'childViews'),
        currentView = get(this, 'currentView');

    if (currentView) {
      childViews.removeObject(currentView);
      currentView.destroy();
    }
  }, 'currentView'),

  _currentViewDidChange: Ember.observer(function() {
    var childViews = get(this, 'childViews'),
        currentView = get(this, 'currentView');

    if (currentView) {
      childViews.pushObject(currentView);
    }
  }, 'currentView'),

  _ensureChildrenAreInDOM: function () {
    this.invokeForState('ensureChildrenAreInDOM', this);
  }
});

// Ember.ContainerView extends the default view states to provide different
// behavior for childViewsWillChange and childViewsDidChange.
Ember.ContainerView.states = {
  parent: Ember.View.states,

  inBuffer: {
    childViewsDidChange: function(parentView, views, start, added) {
      var buffer = parentView.buffer,
          startWith, prev, prevBuffer, view;

      // Determine where to begin inserting the child view(s) in the
      // render buffer.
      if (start === 0) {
        // If views were inserted at the beginning, prepend the first
        // view to the render buffer, then begin inserting any
        // additional views at the beginning.
        view = views[start];
        startWith = start + 1;
        view.renderToBuffer(buffer, 'prepend');
      } else {
        // Otherwise, just insert them at the same place as the child
        // views mutation.
        view = views[start - 1];
        startWith = start;
      }

      for (var i=startWith; i<start+added; i++) {
        prev = view;
        view = views[i];
        prevBuffer = prev.buffer;
        view.renderToBuffer(prevBuffer, 'insertAfter');
      }
    }
  },

  hasElement: {
    childViewsWillChange: function(view, views, start, removed) {
      for (var i=start; i<start+removed; i++) {
        views[i].remove();
      }
    },

    childViewsDidChange: function(view, views, start, added) {
      Ember.run.scheduleOnce('render', this, '_ensureChildrenAreInDOM');
    },

    ensureChildrenAreInDOM: function(view) {
      var childViews = view.get('childViews'), i, len, childView, previous, buffer;
      for (i = 0, len = childViews.length; i < len; i++) {
        childView = childViews[i];
        buffer = childView.renderToBufferIfNeeded();
        if (buffer) {
          childView._notifyWillInsertElement();
          if (previous) {
            previous.domManager.after(previous, buffer.string());
          } else {
            view.domManager.prepend(view, buffer.string());
          }
          childView.transitionTo('inDOM');
          childView.propertyDidChange('element');
          childView._notifyDidInsertElement();
        }
        previous = childView;
      }
    }
  }
};

Ember.ContainerView.states.inDOM = {
  parentState: Ember.ContainerView.states.hasElement
};

Ember.ContainerView.reopen({
  states: Ember.ContainerView.states
});

})();



(function() {
/**
@module ember
@submodule ember-views
*/

var get = Ember.get, set = Ember.set, fmt = Ember.String.fmt;

/**
  `Ember.CollectionView` is an `Ember.View` descendent responsible for managing a
  collection (an array or array-like object) by maintaing a child view object and 
  associated DOM representation for each item in the array and ensuring that child
  views and their associated rendered HTML are updated when items in the array
  are added, removed, or replaced.

  ## Setting content
  The managed collection of objects is referenced as the `Ember.CollectionView` instance's
  `content` property.

  ``` javascript
  someItemsView = Ember.CollectionView.create({
    content: ['A', 'B','C']
  })
  ```

  The view for each item in the collection will have its `content` property set
  to the item.

  ## Specifying itemViewClass
  By default the view class for each item in the managed collection will be an instance
  of `Ember.View`. You can supply a different class by setting the `CollectionView`'s
  `itemViewClass` property.

  Given an empty `<body>` and the following code:

  ``` javascript 
  someItemsView = Ember.CollectionView.create({
    classNames: ['a-collection'],
    content: ['A','B','C'],
    itemViewClass: Ember.View.extend({
      template: Ember.Handlebars.compile("the letter: {{view.content}}")
    })
  });

  someItemsView.appendTo('body');
  ```

  Will result in the following HTML structure

  ``` html
  <div class="ember-view a-collection">
    <div class="ember-view">the letter: A</div>
    <div class="ember-view">the letter: B</div>
    <div class="ember-view">the letter: C</div>
  </div>
  ```

  ## Automatic matching of parent/child tagNames

  Setting the `tagName` property of a `CollectionView` to any of 
  "ul", "ol", "table", "thead", "tbody", "tfoot", "tr", or "select" will result
  in the item views receiving an appropriately matched `tagName` property.


  Given an empty `<body>` and the following code:

  ``` javascript
  anUndorderedListView = Ember.CollectionView.create({
    tagName: 'ul',
    content: ['A','B','C'],
    itemViewClass: Ember.View.extend({
      template: Ember.Handlebars.compile("the letter: {{view.content}}")
    })
  });

  anUndorderedListView.appendTo('body');
  ```

  Will result in the following HTML structure

  ``` html
  <ul class="ember-view a-collection">
    <li class="ember-view">the letter: A</li>
    <li class="ember-view">the letter: B</li>
    <li class="ember-view">the letter: C</li>
  </ul>
  ```

  Additional tagName pairs can be provided by adding to `Ember.CollectionView.CONTAINER_MAP `

  ``` javascript
  Ember.CollectionView.CONTAINER_MAP['article'] = 'section'
  ```


  ## Empty View
  You can provide an `Ember.View` subclass to the `Ember.CollectionView` instance as its
  `emptyView` property. If the `content` property of a `CollectionView` is set to `null`
  or an empty array, an instance of this view will be the `CollectionView`s only child.

  ``` javascript
  aListWithNothing = Ember.CollectionView.create({
    classNames: ['nothing']
    content: null,
    emptyView: Ember.View.extend({
      template: Ember.Handlebars.compile("The collection is empty")
    })
  });

  aListWithNothing.appendTo('body');
  ```

  Will result in the following HTML structure

  ``` html
  <div class="ember-view nothing">
    <div class="ember-view">
      The collection is empty
    </div>
  </div>
  ```

  ## Adding and Removing items
  The `childViews` property of a `CollectionView` should not be directly manipulated. Instead,
  add, remove, replace items from its `content` property. This will trigger
  appropriate changes to its rendered HTML.

  ## Use in templates via the `{{collection}}` Ember.Handlebars helper
  Ember.Handlebars provides a helper specifically for adding `CollectionView`s to templates.
  See `Ember.Handlebars.collection` for more details

  @class CollectionView
  @namespace Ember
  @extends Ember.ContainerView
  @since Ember 0.9
*/
Ember.CollectionView = Ember.ContainerView.extend(
/** @scope Ember.CollectionView.prototype */ {

  /**
    A list of items to be displayed by the Ember.CollectionView.

    @property content
    @type Ember.Array
    @default null
  */
  content: null,

  /**
    @private

    This provides metadata about what kind of empty view class this
    collection would like if it is being instantiated from another
    system (like Handlebars)

    @property emptyViewClass
  */
  emptyViewClass: Ember.View,

  /**
    An optional view to display if content is set to an empty array.

    @property emptyView
    @type Ember.View
    @default null
  */
  emptyView: null,

  /**
    @property itemViewClass
    @type Ember.View
    @default Ember.View
  */
  itemViewClass: Ember.View,

  init: function() {
    var ret = this._super();
    this._contentDidChange();
    return ret;
  },

  _contentWillChange: Ember.beforeObserver(function() {
    var content = this.get('content');

    if (content) { content.removeArrayObserver(this); }
    var len = content ? get(content, 'length') : 0;
    this.arrayWillChange(content, 0, len);
  }, 'content'),

  /**
    @private

    Check to make sure that the content has changed, and if so,
    update the children directly. This is always scheduled
    asynchronously, to allow the element to be created before
    bindings have synchronized and vice versa.

    @method _contentDidChange
  */
  _contentDidChange: Ember.observer(function() {
    var content = get(this, 'content');

    if (content) {
      Ember.assert(fmt("an Ember.CollectionView's content must implement Ember.Array. You passed %@", [content]), Ember.Array.detect(content));
      content.addArrayObserver(this);
    }

    var len = content ? get(content, 'length') : 0;
    this.arrayDidChange(content, 0, null, len);
  }, 'content'),

  willDestroy: function() {
    var content = get(this, 'content');
    if (content) { content.removeArrayObserver(this); }

    this._super();
  },

  arrayWillChange: function(content, start, removedCount) {
    // If the contents were empty before and this template collection has an
    // empty view remove it now.
    var emptyView = get(this, 'emptyView');
    if (emptyView && emptyView instanceof Ember.View) {
      emptyView.removeFromParent();
    }

    // Loop through child views that correspond with the removed items.
    // Note that we loop from the end of the array to the beginning because
    // we are mutating it as we go.
    var childViews = get(this, 'childViews'), childView, idx, len;

    len = get(childViews, 'length');

    var removingAll = removedCount === len;

    if (removingAll) {
      this.invokeForState('empty');
    }

    for (idx = start + removedCount - 1; idx >= start; idx--) {
      childView = childViews[idx];
      if (removingAll) { childView.removedFromDOM = true; }
      childView.destroy();
    }
  },

  /**
    Called when a mutation to the underlying content array occurs.

    This method will replay that mutation against the views that compose the
    Ember.CollectionView, ensuring that the view reflects the model.

    This array observer is added in contentDidChange.

    @method arrayDidChange
    @param {Array} addedObjects the objects that were added to the content
    @param {Array} removedObjects the objects that were removed from the content
    @param {Number} changeIndex the index at which the changes occurred
  */
  arrayDidChange: function(content, start, removed, added) {
    var itemViewClass = get(this, 'itemViewClass'),
        childViews = get(this, 'childViews'),
        addedViews = [], view, item, idx, len, itemTagName;

    if ('string' === typeof itemViewClass) {
      itemViewClass = get(itemViewClass);
    }

    Ember.assert(fmt("itemViewClass must be a subclass of Ember.View, not %@", [itemViewClass]), Ember.View.detect(itemViewClass));

    len = content ? get(content, 'length') : 0;
    if (len) {
      for (idx = start; idx < start+added; idx++) {
        item = content.objectAt(idx);

        view = this.createChildView(itemViewClass, {
          content: item,
          contentIndex: idx
        });

        addedViews.push(view);
      }
    } else {
      var emptyView = get(this, 'emptyView');
      if (!emptyView) { return; }

      emptyView = this.createChildView(emptyView);
      addedViews.push(emptyView);
      set(this, 'emptyView', emptyView);
    }
    childViews.replace(start, 0, addedViews);
  },

  createChildView: function(view, attrs) {
    view = this._super(view, attrs);

    var itemTagName = get(view, 'tagName');
    var tagName = (itemTagName === null || itemTagName === undefined) ? Ember.CollectionView.CONTAINER_MAP[get(this, 'tagName')] : itemTagName;

    set(view, 'tagName', tagName);

    return view;
  }
});

/**
  A map of parent tags to their default child tags. You can add
  additional parent tags if you want collection views that use
  a particular parent tag to default to a child tag.

  @property CONTAINER_MAP
  @type Hash
  @static
  @final
*/
Ember.CollectionView.CONTAINER_MAP = {
  ul: 'li',
  ol: 'li',
  table: 'tr',
  thead: 'tr',
  tbody: 'tr',
  tfoot: 'tr',
  tr: 'td',
  select: 'option'
};

})();



(function() {

})();



(function() {
/*globals jQuery*/
/**
Ember Views

@module ember
@submodule ember-views
@require ember-runtime
@main ember-views
*/

})();

(function() {
var get = Ember.get, set = Ember.set;

/**
@module ember
@submodule ember-states
*/

/**
  @class State
  @namespace Ember
  @extends Ember.Object
  @uses Ember.Evented
*/
Ember.State = Ember.Object.extend(Ember.Evented,
/** @scope Ember.State.prototype */{
  isState: true,

  /**
    A reference to the parent state.

    @property parentState
    @type Ember.State
  */
  parentState: null,
  start: null,

  /**
    The name of this state.

    @property name
    @type String
  */
  name: null,

  /**
    The full path to this state.

    @property path
    @type String
  */
  path: Ember.computed(function() {
    var parentPath = get(this, 'parentState.path'),
        path = get(this, 'name');

    if (parentPath) {
      path = parentPath + '.' + path;
    }

    return path;
  }).property(),

  /**
    @private

    Override the default event firing from Ember.Evented to
    also call methods with the given name.

    @method trigger
    @param name
  */
  trigger: function(name) {
    if (this[name]) {
      this[name].apply(this, [].slice.call(arguments, 1));
    }
    this._super.apply(this, arguments);
  },

  init: function() {
    var states = get(this, 'states'), foundStates;
    set(this, 'childStates', Ember.A());
    set(this, 'eventTransitions', get(this, 'eventTransitions') || {});

    var name, value, transitionTarget;

    // As a convenience, loop over the properties
    // of this state and look for any that are other
    // Ember.State instances or classes, and move them
    // to the `states` hash. This avoids having to
    // create an explicit separate hash.

    if (!states) {
      states = {};

      for (name in this) {
        if (name === "constructor") { continue; }

        if (value = this[name]) {
          if (transitionTarget = value.transitionTarget) {
            this.eventTransitions[name] = transitionTarget;
          }

          this.setupChild(states, name, value);
        }
      }

      set(this, 'states', states);
    } else {
      for (name in states) {
        this.setupChild(states, name, states[name]);
      }
    }

    set(this, 'pathsCache', {});
    set(this, 'pathsCacheNoContext', {});
  },

  setupChild: function(states, name, value) {
    if (!value) { return false; }

    if (value.isState) {
      set(value, 'name', name);
    } else if (Ember.State.detect(value)) {
      value = value.create({
        name: name
      });
    }

    if (value.isState) {
      set(value, 'parentState', this);
      get(this, 'childStates').pushObject(value);
      states[name] = value;
      return value;
    }
  },

  lookupEventTransition: function(name) {
    var path, state = this;

    while(state && !path) {
      path = state.eventTransitions[name];
      state = state.get('parentState');
    }

    return path;
  },

  /**
    A Boolean value indicating whether the state is a leaf state
    in the state hierarchy. This is false if the state has child
    states; otherwise it is true.

    @property isLeaf
    @type Boolean
  */
  isLeaf: Ember.computed(function() {
    return !get(this, 'childStates').length;
  }),

  /**
    A boolean value indicating whether the state takes a context.
    By default we assume all states take contexts.

    @property hasContext
    @default true
  */
  hasContext: true,

  /**
    This is the default transition event.

    @event setup
    @param {Ember.StateManager} manager
    @param context
    @see Ember.StateManager#transitionEvent
  */
  setup: Ember.K,

  /**
    This event fires when the state is entered.

    @event enter
    @param {Ember.StateManager} manager
  */
  enter: Ember.K,

  /**
    This event fires when the state is exited.

    @event exit
    @param {Ember.StateManager} manager
  */
  exit: Ember.K
});

Ember.State.reopenClass({

  /**
    Creates an action function for transitioning to the named state while preserving context.

    The following example StateManagers are equivalent:

        aManager = Ember.StateManager.create({
          stateOne: Ember.State.create({
            changeToStateTwo: Ember.State.transitionTo('stateTwo')
          }),
          stateTwo: Ember.State.create({})
        })

        bManager = Ember.StateManager.create({
          stateOne: Ember.State.create({
            changeToStateTwo: function(manager, context){
              manager.transitionTo('stateTwo', context)
            }
          }),
          stateTwo: Ember.State.create({})
        })

    @method transitionTo
    @static
    @param {String} target
  */

  transitionTo: function(target) {

    var transitionFunction = function(stateManager, contextOrEvent) {
      var contexts = [], transitionArgs,
          Event = Ember.$ && Ember.$.Event;

      if (contextOrEvent && (Event && contextOrEvent instanceof Event)) {
        if (contextOrEvent.hasOwnProperty('contexts')) {
          contexts = contextOrEvent.contexts.slice();
        }
      }
      else {
        contexts = [].slice.call(arguments, 1);
      }

      contexts.unshift(target);
      stateManager.transitionTo.apply(stateManager, contexts);
    };

    transitionFunction.transitionTarget = target;

    return transitionFunction;
  }

});

})();



(function() {
/**
@module ember
@submodule ember-states
*/

var get = Ember.get, set = Ember.set, fmt = Ember.String.fmt;
var arrayForEach = Ember.ArrayPolyfills.forEach;
/**
  A Transition takes the enter, exit and resolve states and normalizes
  them:

  * takes any passed in contexts into consideration
  * adds in `initialState`s

  @class Transition
  @private
*/
var Transition = function(raw) {
  this.enterStates = raw.enterStates.slice();
  this.exitStates = raw.exitStates.slice();
  this.resolveState = raw.resolveState;

  this.finalState = raw.enterStates[raw.enterStates.length - 1] || raw.resolveState;
};

Transition.prototype = {
  /**
    Normalize the passed in enter, exit and resolve states.

    This process also adds `finalState` and `contexts` to the Transition object.

    @method normalize
    @param {Ember.StateManager} manager the state manager running the transition
    @param {Array} contexts a list of contexts passed into `transitionTo`
  */
  normalize: function(manager, contexts) {
    this.matchContextsToStates(contexts);
    this.addInitialStates();
    this.removeUnchangedContexts(manager);
    return this;
  },

  /**
    Match each of the contexts passed to `transitionTo` to a state.
    This process may also require adding additional enter and exit
    states if there are more contexts than enter states.

    @method matchContextsToStates
    @param {Array} contexts a list of contexts passed into `transitionTo`
  */
  matchContextsToStates: function(contexts) {
    var stateIdx = this.enterStates.length - 1,
        matchedContexts = [],
        state,
        context;

    // Next, we will match the passed in contexts to the states they
    // represent.
    //
    // First, assign a context to each enter state in reverse order. If
    // any contexts are left, add a parent state to the list of states
    // to enter and exit, and assign a context to the parent state.
    //
    // If there are still contexts left when the state manager is
    // reached, raise an exception.
    //
    // This allows the following:
    //
    // |- root
    // | |- post
    // | | |- comments
    // | |- about (* current state)
    //
    // For `transitionTo('post.comments', post, post.get('comments')`,
    // the first context (`post`) will be assigned to `root.post`, and
    // the second context (`post.get('comments')`) will be assigned
    // to `root.post.comments`.
    //
    // For the following:
    //
    // |- root
    // | |- post
    // | | |- index (* current state)
    // | | |- comments
    //
    // For `transitionTo('post.comments', otherPost, otherPost.get('comments')`,
    // the `<root.post>` state will be added to the list of enter and exit
    // states because its context has changed.

    while (contexts.length > 0) {
      if (stateIdx >= 0) {
        state = this.enterStates[stateIdx--];
      } else {
        if (this.enterStates.length) {
          state = get(this.enterStates[0], 'parentState');
          if (!state) { throw "Cannot match all contexts to states"; }
        } else {
          // If re-entering the current state with a context, the resolve
          // state will be the current state.
          state = this.resolveState;
        }

        this.enterStates.unshift(state);
        this.exitStates.unshift(state);
      }

      // in routers, only states with dynamic segments have a context
      if (get(state, 'hasContext')) {
        context = contexts.pop();
      } else {
        context = null;
      }

      matchedContexts.unshift(context);
    }

    this.contexts = matchedContexts;
  },

  /**
    Add any `initialState`s to the list of enter states.

    @method addInitialStates
  */
  addInitialStates: function() {
    var finalState = this.finalState, initialState;

    while(true) {
      initialState = get(finalState, 'initialState') || 'start';
      finalState = get(finalState, 'states.' + initialState);

      if (!finalState) { break; }

      this.finalState = finalState;
      this.enterStates.push(finalState);
      this.contexts.push(undefined);
    }
  },

  /**
    Remove any states that were added because the number of contexts
    exceeded the number of explicit enter states, but the context has
    not changed since the last time the state was entered.

    @method removeUnchangedContexts
    @param {Ember.StateManager} manager passed in to look up the last
      context for a states
  */
  removeUnchangedContexts: function(manager) {
    // Start from the beginning of the enter states. If the state was added
    // to the list during the context matching phase, make sure the context
    // has actually changed since the last time the state was entered.
    while (this.enterStates.length > 0) {
      if (this.enterStates[0] !== this.exitStates[0]) { break; }

      if (this.enterStates.length === this.contexts.length) {
        if (manager.getStateMeta(this.enterStates[0], 'context') !== this.contexts[0]) { break; }
        this.contexts.shift();
      }

      this.resolveState = this.enterStates.shift();
      this.exitStates.shift();
    }
  }
};

/**
  StateManager is part of Ember's implementation of a finite state machine. A StateManager
  instance manages a number of properties that are instances of `Ember.State`,
  tracks the current active state, and triggers callbacks when states have changed.

  ## Defining States

  The states of StateManager can be declared in one of two ways. First, you can define
  a `states` property that contains all the states:

      managerA = Ember.StateManager.create({
        states: {
          stateOne: Ember.State.create(),
          stateTwo: Ember.State.create()
        }
      })

      managerA.get('states')
      // {
      //   stateOne: Ember.State.create(),
      //   stateTwo: Ember.State.create()
      // }

  You can also add instances of `Ember.State` (or an `Ember.State` subclass) directly as properties
  of a StateManager. These states will be collected into the `states` property for you.

      managerA = Ember.StateManager.create({
        stateOne: Ember.State.create(),
        stateTwo: Ember.State.create()
      })

      managerA.get('states')
      // {
      //   stateOne: Ember.State.create(),
      //   stateTwo: Ember.State.create()
      // }

  ## The Initial State
  When created a StateManager instance will immediately enter into the state
  defined as its `start` property or the state referenced by name in its
  `initialState` property:

      managerA = Ember.StateManager.create({
        start: Ember.State.create({})
      })

      managerA.get('currentState.name') // 'start'

      managerB = Ember.StateManager.create({
        initialState: 'beginHere',
        beginHere: Ember.State.create({})
      })

      managerB.get('currentState.name') // 'beginHere'

  Because it is a property you may also provide a computed function if you wish to derive
  an `initialState` programmatically:

      managerC = Ember.StateManager.create({
        initialState: function(){
          if (someLogic) {
            return 'active';
          } else {
            return 'passive';
          }
        }.property(),
        active: Ember.State.create({}),
        passive: Ember.State.create({})
      })

  ## Moving Between States
  A StateManager can have any number of Ember.State objects as properties
  and can have a single one of these states as its current state.

  Calling `transitionTo` transitions between states:

      robotManager = Ember.StateManager.create({
        initialState: 'poweredDown',
        poweredDown: Ember.State.create({}),
        poweredUp: Ember.State.create({})
      })

      robotManager.get('currentState.name') // 'poweredDown'
      robotManager.transitionTo('poweredUp')
      robotManager.get('currentState.name') // 'poweredUp'

  Before transitioning into a new state the existing `currentState` will have its
  `exit` method called with the StateManager instance as its first argument and
  an object representing the transition as its second argument.

  After transitioning into a new state the new `currentState` will have its
  `enter` method called with the StateManager instance as its first argument and
  an object representing the transition as its second argument.

      robotManager = Ember.StateManager.create({
        initialState: 'poweredDown',
        poweredDown: Ember.State.create({
          exit: function(stateManager){
            console.log("exiting the poweredDown state")
          }
        }),
        poweredUp: Ember.State.create({
          enter: function(stateManager){
            console.log("entering the poweredUp state. Destroy all humans.")
          }
        })
      })

      robotManager.get('currentState.name') // 'poweredDown'
      robotManager.transitionTo('poweredUp')
      // will log
      // 'exiting the poweredDown state'
      // 'entering the poweredUp state. Destroy all humans.'


  Once a StateManager is already in a state, subsequent attempts to enter that state will
  not trigger enter or exit method calls. Attempts to transition into a state that the
  manager does not have will result in no changes in the StateManager's current state:

      robotManager = Ember.StateManager.create({
        initialState: 'poweredDown',
        poweredDown: Ember.State.create({
          exit: function(stateManager){
            console.log("exiting the poweredDown state")
          }
        }),
        poweredUp: Ember.State.create({
          enter: function(stateManager){
            console.log("entering the poweredUp state. Destroy all humans.")
          }
        })
      })

      robotManager.get('currentState.name') // 'poweredDown'
      robotManager.transitionTo('poweredUp')
      // will log
      // 'exiting the poweredDown state'
      // 'entering the poweredUp state. Destroy all humans.'
      robotManager.transitionTo('poweredUp') // no logging, no state change

      robotManager.transitionTo('someUnknownState') // silently fails
      robotManager.get('currentState.name') // 'poweredUp'


  Each state property may itself contain properties that are instances of Ember.State.
  The StateManager can transition to specific sub-states in a series of transitionTo method calls or
  via a single transitionTo with the full path to the specific state. The StateManager will also
  keep track of the full path to its currentState

      robotManager = Ember.StateManager.create({
        initialState: 'poweredDown',
        poweredDown: Ember.State.create({
          charging: Ember.State.create(),
          charged: Ember.State.create()
        }),
        poweredUp: Ember.State.create({
          mobile: Ember.State.create(),
          stationary: Ember.State.create()
        })
      })

      robotManager.get('currentState.name') // 'poweredDown'

      robotManager.transitionTo('poweredUp')
      robotManager.get('currentState.name') // 'poweredUp'

      robotManager.transitionTo('mobile')
      robotManager.get('currentState.name') // 'mobile'

      // transition via a state path
      robotManager.transitionTo('poweredDown.charging')
      robotManager.get('currentState.name') // 'charging'

      robotManager.get('currentState.path') // 'poweredDown.charging'

  Enter transition methods will be called for each state and nested child state in their
  hierarchical order.  Exit methods will be called for each state and its nested states in
  reverse hierarchical order.

  Exit transitions for a parent state are not called when entering into one of its child states,
  only when transitioning to a new section of possible states in the hierarchy.

      robotManager = Ember.StateManager.create({
        initialState: 'poweredDown',
        poweredDown: Ember.State.create({
          enter: function(){},
          exit: function(){
            console.log("exited poweredDown state")
          },
          charging: Ember.State.create({
            enter: function(){},
            exit: function(){}
          }),
          charged: Ember.State.create({
            enter: function(){
              console.log("entered charged state")
            },
            exit: function(){
              console.log("exited charged state")
            }
          })
        }),
        poweredUp: Ember.State.create({
          enter: function(){
            console.log("entered poweredUp state")
          },
          exit: function(){},
          mobile: Ember.State.create({
            enter: function(){
              console.log("entered mobile state")
            },
            exit: function(){}
          }),
          stationary: Ember.State.create({
            enter: function(){},
            exit: function(){}
          })
        })
      })


      robotManager.get('currentState.path') // 'poweredDown'
      robotManager.transitionTo('charged')
      // logs 'entered charged state'
      // but does *not* log  'exited poweredDown state'
      robotManager.get('currentState.name') // 'charged

      robotManager.transitionTo('poweredUp.mobile')
      // logs
      // 'exited charged state'
      // 'exited poweredDown state'
      // 'entered poweredUp state'
      // 'entered mobile state'

  During development you can set a StateManager's `enableLogging` property to `true` to
  receive console messages of state transitions.

      robotManager = Ember.StateManager.create({
        enableLogging: true
      })

  ## Managing currentState with Actions
  To control which transitions between states are possible for a given state, StateManager
  can receive and route action messages to its states via the `send` method.  Calling to `send` with
  an action name will begin searching for a method with the same name starting at the current state
  and moving up through the parent states in a state hierarchy until an appropriate method is found
  or the StateManager instance itself is reached.

  If an appropriately named method is found it will be called with the state manager as the first
  argument and an optional `context` object as the second argument.

      managerA = Ember.StateManager.create({
        initialState: 'stateOne.substateOne.subsubstateOne',
        stateOne: Ember.State.create({
          substateOne: Ember.State.create({
            anAction: function(manager, context){
              console.log("an action was called")
            },
            subsubstateOne: Ember.State.create({})
          })
        })
      })

      managerA.get('currentState.name') // 'subsubstateOne'
      managerA.send('anAction')
      // 'stateOne.substateOne.subsubstateOne' has no anAction method
      // so the 'anAction' method of 'stateOne.substateOne' is called
      // and logs "an action was called"
      // with managerA as the first argument
      // and no second argument

      someObject = {}
      managerA.send('anAction', someObject)
      // the 'anAction' method of 'stateOne.substateOne' is called again
      // with managerA as the first argument and
      // someObject as the second argument.


  If the StateManager attempts to send an action but does not find an appropriately named
  method in the current state or while moving upwards through the state hierarchy
  it will throw a new Ember.Error. Action detection only moves upwards through the state hierarchy
  from the current state. It does not search in other portions of the hierarchy.

      managerB = Ember.StateManager.create({
        initialState: 'stateOne.substateOne.subsubstateOne',
        stateOne: Ember.State.create({
          substateOne: Ember.State.create({
            subsubstateOne: Ember.State.create({})
          })
        }),
        stateTwo: Ember.State.create({
         anAction: function(manager, context){
           // will not be called below because it is
           // not a parent of the current state
         }
        })
      })

      managerB.get('currentState.name') // 'subsubstateOne'
      managerB.send('anAction')
      // Error: <Ember.StateManager:ember132> could not
      // respond to event anAction in state stateOne.substateOne.subsubstateOne.

  Inside of an action method the given state should delegate `transitionTo` calls on its
  StateManager.

      robotManager = Ember.StateManager.create({
        initialState: 'poweredDown.charging',
        poweredDown: Ember.State.create({
          charging: Ember.State.create({
            chargeComplete: function(manager, context){
              manager.transitionTo('charged')
            }
          }),
          charged: Ember.State.create({
            boot: function(manager, context){
              manager.transitionTo('poweredUp')
            }
          })
        }),
        poweredUp: Ember.State.create({
          beginExtermination: function(manager, context){
            manager.transitionTo('rampaging')
          },
          rampaging: Ember.State.create()
        })
      })

      robotManager.get('currentState.name') // 'charging'
      robotManager.send('boot') // throws error, no boot action
                                // in current hierarchy
      robotManager.get('currentState.name') // remains 'charging'

      robotManager.send('beginExtermination') // throws error, no beginExtermination
                                              // action in current hierarchy
      robotManager.get('currentState.name') // remains 'charging'

      robotManager.send('chargeComplete')
      robotManager.get('currentState.name') // 'charged'

      robotManager.send('boot')
      robotManager.get('currentState.name') // 'poweredUp'

      robotManager.send('beginExtermination', allHumans)
      robotManager.get('currentState.name') // 'rampaging'

  Transition actions can also be created using the `transitionTo` method of the Ember.State class. The
  following example StateManagers are equivalent:

      aManager = Ember.StateManager.create({
        stateOne: Ember.State.create({
          changeToStateTwo: Ember.State.transitionTo('stateTwo')
        }),
        stateTwo: Ember.State.create({})
      })

      bManager = Ember.StateManager.create({
        stateOne: Ember.State.create({
          changeToStateTwo: function(manager, context){
            manager.transitionTo('stateTwo', context)
          }
        }),
        stateTwo: Ember.State.create({})
      })

  @class StateManager
  @namespace Ember
  @extends Ember.State
**/
Ember.StateManager = Ember.State.extend({
  /**
    @private

    When creating a new statemanager, look for a default state to transition
    into. This state can either be named `start`, or can be specified using the
    `initialState` property.

    @method init
  */
  init: function() {
    this._super();

    set(this, 'stateMeta', Ember.Map.create());

    var initialState = get(this, 'initialState');

    if (!initialState && get(this, 'states.start')) {
      initialState = 'start';
    }

    if (initialState) {
      this.transitionTo(initialState);
      Ember.assert('Failed to transition to initial state "' + initialState + '"', !!get(this, 'currentState'));
    }
  },

  stateMetaFor: function(state) {
    var meta = get(this, 'stateMeta'),
        stateMeta = meta.get(state);

    if (!stateMeta) {
      stateMeta = {};
      meta.set(state, stateMeta);
    }

    return stateMeta;
  },

  setStateMeta: function(state, key, value) {
    return set(this.stateMetaFor(state), key, value);
  },

  getStateMeta: function(state, key) {
    return get(this.stateMetaFor(state), key);
  },

  /**
    The current state from among the manager's possible states. This property should
    not be set directly.  Use `transitionTo` to move between states by name.

    @property currentState
    @type Ember.State
  */
  currentState: null,

  /**
   The path of the current state. Returns a string representation of the current
   state.

   @property currentPath
   @type String
  */
  currentPath: Ember.computed('currentState', function() {
    return get(this, 'currentState.path');
  }),

  /**
    The name of transitionEvent that this stateManager will dispatch

    @property transitionEvent
    @type String
    @default 'setup'
  */
  transitionEvent: 'setup',

  /**
    If set to true, `errorOnUnhandledEvents` will cause an exception to be
    raised if you attempt to send an event to a state manager that is not
    handled by the current state or any of its parent states.

    @property errorOnUnhandledEvents
    @type Boolean
    @default true
  */
  errorOnUnhandledEvent: true,

  send: function(event) {
    var contexts, sendRecursiveArguments;

    Ember.assert('Cannot send event "' + event + '" while currentState is ' + get(this, 'currentState'), get(this, 'currentState'));

    contexts = [].slice.call(arguments, 1);
    sendRecursiveArguments = contexts;
    sendRecursiveArguments.unshift(event, get(this, 'currentState'));

    return this.sendRecursively.apply(this, sendRecursiveArguments);
  },

  sendRecursively: function(event, currentState) {
    var log = this.enableLogging,
        action = currentState[event],
        contexts, sendRecursiveArguments, actionArguments;

    contexts = [].slice.call(arguments, 2);

    // Test to see if the action is a method that
    // can be invoked. Don't blindly check just for
    // existence, because it is possible the state
    // manager has a child state of the given name,
    // and we should still raise an exception in that
    // case.
    if (typeof action === 'function') {
      if (log) { Ember.Logger.log(fmt("STATEMANAGER: Sending event '%@' to state %@.", [event, get(currentState, 'path')])); }

      actionArguments = contexts;
      actionArguments.unshift(this);

      return action.apply(currentState, actionArguments);
    } else {
      var parentState = get(currentState, 'parentState');
      if (parentState) {

        sendRecursiveArguments = contexts;
        sendRecursiveArguments.unshift(event, parentState);

        return this.sendRecursively.apply(this, sendRecursiveArguments);
      } else if (get(this, 'errorOnUnhandledEvent')) {
        throw new Ember.Error(this.toString() + " could not respond to event " + event + " in state " + get(this, 'currentState.path') + ".");
      }
    }
  },

  /**
    Finds a state by its state path.

    Example:

        manager = Ember.StateManager.create({
          root: Ember.State.create({
            dashboard: Ember.State.create()
          })
        });

        manager.getStateByPath(manager, "root.dashboard")

        // returns the dashboard state

    @method getStateByPath
    @param {Ember.State} root the state to start searching from
    @param {String} path the state path to follow
    @return {Ember.State} the state at the end of the path
  */
  getStateByPath: function(root, path) {
    var parts = path.split('.'),
        state = root;

    for (var i=0, len=parts.length; i<len; i++) {
      state = get(get(state, 'states'), parts[i]);
      if (!state) { break; }
    }

    return state;
  },

  findStateByPath: function(state, path) {
    var possible;

    while (!possible && state) {
      possible = this.getStateByPath(state, path);
      state = get(state, 'parentState');
    }

    return possible;
  },

  /**
    A state stores its child states in its `states` hash.
    This code takes a path like `posts.show` and looks
    up `root.states.posts.states.show`.

    It returns a list of all of the states from the
    root, which is the list of states to call `enter`
    on.

    @method getStatesInPath
    @param root
    @param path
  */
  getStatesInPath: function(root, path) {
    if (!path || path === "") { return undefined; }
    var parts = path.split('.'),
        result = [],
        states,
        state;

    for (var i=0, len=parts.length; i<len; i++) {
      states = get(root, 'states');
      if (!states) { return undefined; }
      state = get(states, parts[i]);
      if (state) { root = state; result.push(state); }
      else { return undefined; }
    }

    return result;
  },

  goToState: function() {
    // not deprecating this yet so people don't constantly need to
    // make trivial changes for little reason.
    return this.transitionTo.apply(this, arguments);
  },

  transitionTo: function(path, context) {
    // XXX When is transitionTo called with no path
    if (Ember.empty(path)) { return; }

    // The ES6 signature of this function is `path, ...contexts`
    var contexts = context ? Array.prototype.slice.call(arguments, 1) : [],
        currentState = get(this, 'currentState') || this;

    // First, get the enter, exit and resolve states for the current state
    // and specified path. If possible, use an existing cache.
    var hash = this.contextFreeTransition(currentState, path);

    // Next, process the raw state information for the contexts passed in.
    var transition = new Transition(hash).normalize(this, contexts);

    this.enterState(transition);
    this.triggerSetupContext(transition);
  },

  contextFreeTransition: function(currentState, path) {
    var cache = currentState.pathsCache[path];
    if (cache) { return cache; }

    var enterStates = this.getStatesInPath(currentState, path),
        exitStates = [],
        resolveState = currentState;

    // Walk up the states. For each state, check whether a state matching
    // the `path` is nested underneath. This will find the closest
    // parent state containing `path`.
    //
    // This allows the user to pass in a relative path. For example, for
    // the following state hierarchy:
    //
    //    | |root
    //    | |- posts
    //    | | |- show (* current)
    //    | |- comments
    //    | | |- show
    //
    // If the current state is `<root.posts.show>`, an attempt to
    // transition to `comments.show` will match `<root.comments.show>`.
    //
    // First, this code will look for root.posts.show.comments.show.
    // Next, it will look for root.posts.comments.show. Finally,
    // it will look for `root.comments.show`, and find the state.
    //
    // After this process, the following variables will exist:
    //
    // * resolveState: a common parent state between the current
    //   and target state. In the above example, `<root>` is the
    //   `resolveState`.
    // * enterStates: a list of all of the states represented
    //   by the path from the `resolveState`. For example, for
    //   the path `root.comments.show`, `enterStates` would have
    //   `[<root.comments>, <root.comments.show>]`
    // * exitStates: a list of all of the states from the
    //   `resolveState` to the `currentState`. In the above
    //   example, `exitStates` would have
    //   `[<root.posts>`, `<root.posts.show>]`.
    while (resolveState && !enterStates) {
      exitStates.unshift(resolveState);

      resolveState = get(resolveState, 'parentState');
      if (!resolveState) {
        enterStates = this.getStatesInPath(this, path);
        if (!enterStates) {
          Ember.assert('Could not find state for path: "'+path+'"');
          return;
        }
      }
      enterStates = this.getStatesInPath(resolveState, path);
    }

    // If the path contains some states that are parents of both the
    // current state and the target state, remove them.
    //
    // For example, in the following hierarchy:
    //
    // |- root
    // | |- post
    // | | |- index (* current)
    // | | |- show
    //
    // If the `path` is `root.post.show`, the three variables will
    // be:
    //
    // * resolveState: `<state manager>`
    // * enterStates: `[<root>, <root.post>, <root.post.show>]`
    // * exitStates: `[<root>, <root.post>, <root.post.index>]`
    //
    // The goal of this code is to remove the common states, so we
    // have:
    //
    // * resolveState: `<root.post>`
    // * enterStates: `[<root.post.show>]`
    // * exitStates: `[<root.post.index>]`
    //
    // This avoid unnecessary calls to the enter and exit transitions.
    while (enterStates.length > 0 && enterStates[0] === exitStates[0]) {
      resolveState = enterStates.shift();
      exitStates.shift();
    }

    // Cache the enterStates, exitStates, and resolveState for the
    // current state and the `path`.
    var transitions = currentState.pathsCache[path] = {
      exitStates: exitStates,
      enterStates: enterStates,
      resolveState: resolveState
    };

    return transitions;
  },

  triggerSetupContext: function(transitions) {
    var contexts = transitions.contexts,
        offset = transitions.enterStates.length - contexts.length,
        enterStates = transitions.enterStates,
        transitionEvent = get(this, 'transitionEvent');

    Ember.assert("More contexts provided than states", offset >= 0);

    arrayForEach.call(enterStates, function(state, idx) {
      state.trigger(transitionEvent, this, contexts[idx-offset]);
    }, this);
  },

  getState: function(name) {
    var state = get(this, name),
        parentState = get(this, 'parentState');

    if (state) {
      return state;
    } else if (parentState) {
      return parentState.getState(name);
    }
  },

  enterState: function(transition) {
    var log = this.enableLogging;

    var exitStates = transition.exitStates.slice(0).reverse();
    arrayForEach.call(exitStates, function(state) {
      state.trigger('exit', this);
    }, this);

    arrayForEach.call(transition.enterStates, function(state) {
      if (log) { Ember.Logger.log("STATEMANAGER: Entering " + get(state, 'path')); }
      state.trigger('enter', this);
    }, this);

    set(this, 'currentState', transition.finalState);
  }
});

})();



(function() {
/**
Ember States

@module ember
@submodule ember-states
@requires ember-runtime
*/

})();

(function() {
var get = Ember.get;

Ember._ResolvedState = Ember.Object.extend({
  manager: null,
  state: null,
  match: null,

  object: Ember.computed(function(key, value) {
    if (arguments.length === 2) {
      this._object = value;
      return value;
    } else {
      if (this._object) {
        return this._object;
      } else {
        var state = get(this, 'state'),
            match = get(this, 'match'),
            manager = get(this, 'manager');
        return state.deserialize(manager, match.hash);
      }
    }
  }).property(),

  hasPromise: Ember.computed(function() {
    return Ember.canInvoke(get(this, 'object'), 'then');
  }).property('object'),

  promise: Ember.computed(function() {
    var object = get(this, 'object');
    if (Ember.canInvoke(object, 'then')) {
      return object;
    } else {
      return {
        then: function(success) { success(object); }
      };
    }
  }).property('object'),

  transition: function() {
    var manager = get(this, 'manager'),
        path = get(this, 'state.path'),
        object = get(this, 'object');
    manager.transitionTo(path, object);
  }
});

})();



(function() {
/**
@module ember
@submodule ember-routing
*/

var get = Ember.get;

// The Ember Routable mixin assumes the existance of a simple
// routing shim that supports the following three behaviors:
//
// * .getURL() - this is called when the page loads
// * .setURL(newURL) - this is called from within the state
//   manager when the state changes to a routable state
// * .onURLChange(callback) - this happens when the user presses
//   the back or forward button

var paramForClass = function(classObject) {
  var className = classObject.toString(),
      parts = className.split("."),
      last = parts[parts.length - 1];

  return Ember.String.underscore(last) + "_id";
};

var merge = function(original, hash) {
  for (var prop in hash) {
    if (!hash.hasOwnProperty(prop)) { continue; }
    if (original.hasOwnProperty(prop)) { continue; }

    original[prop] = hash[prop];
  }
};

/**
  @class Routable
  @namespace Ember
  @extends Ember.Mixin
*/
Ember.Routable = Ember.Mixin.create({
  init: function() {
    var redirection;
    this.on('setup', this, this.stashContext);

    if (redirection = get(this, 'redirectsTo')) {
      Ember.assert("You cannot use `redirectsTo` if you already have a `connectOutlets` method", this.connectOutlets === Ember.K);

      this.connectOutlets = function(router) {
        router.transitionTo(redirection);
      };
    }

    // normalize empty route to '/'
    var route = get(this, 'route');
    if (route === '') {
      route = '/';
    }

    this._super();

    Ember.assert("You cannot use `redirectsTo` on a state that has child states", !redirection || (!!redirection && !!get(this, 'isLeaf')));
  },

  setup: function() {
    return this.connectOutlets.apply(this, arguments);
  },

  /**
    @private

    Whenever a routable state is entered, the context it was entered with
    is stashed so that we can regenerate the state's `absoluteURL` on
    demand.

    @method stashContext
    @param manager {Ember.StateManager}
    @param context
  */
  stashContext: function(manager, context) {
    this.router = manager;

    var serialized = this.serialize(manager, context);
    Ember.assert('serialize must return a hash', !serialized || typeof serialized === 'object');

    manager.setStateMeta(this, 'context', context);
    manager.setStateMeta(this, 'serialized', serialized);

    if (get(this, 'isRoutable') && !get(manager, 'isRouting')) {
      this.updateRoute(manager, get(manager, 'location'));
    }
  },

  /**
    @private

    Whenever a routable state is entered, the router's location object
    is notified to set the URL to the current absolute path.

    In general, this will update the browser's URL.

    @method updateRoute
    @param manager {Ember.StateManager}
    @param location {Ember.Location}
  */
  updateRoute: function(manager, location) {
    if (get(this, 'isLeafRoute')) {
      var path = this.absoluteRoute(manager);
      location.setURL(path);
    }
  },

  /**
    @private

    Get the absolute route for the current state and a given
    hash.

    This method is private, as it expects a serialized hash,
    not the original context object.

    @method absoluteRoute
    @param manager {Ember.StateManager}
    @param hash {Hash}
  */
  absoluteRoute: function(manager, hash) {
    var parentState = get(this, 'parentState');
    var path = '', generated;

    // If the parent state is routable, use its current path
    // as this route's prefix.
    if (get(parentState, 'isRoutable')) {
      path = parentState.absoluteRoute(manager, hash);
    }

    var matcher = get(this, 'routeMatcher'),
        serialized = manager.getStateMeta(this, 'serialized');

    // merge the existing serialized object in with the passed
    // in hash.
    hash = hash || {};
    merge(hash, serialized);

    generated = matcher && matcher.generate(hash);

    if (generated) {
      path = path + '/' + generated;
    }

    return path;
  },

  /**
    @private

    At the moment, a state is routable if it has a string `route`
    property. This heuristic may change.

    @property isRoutable
    @type Boolean
  */
  isRoutable: Ember.computed(function() {
    return typeof get(this, 'route') === 'string';
  }),

  /**
    @private

    Determine if this is the last routeable state

    @property isLeafRoute
    @type Boolean
  */
  isLeafRoute: Ember.computed(function() {
    if (get(this, 'isLeaf')) { return true; }
    return !get(this, 'childStates').findProperty('isRoutable');
  }),

  /**
    @private

    A _RouteMatcher object generated from the current route's `route`
    string property.

    @property routeMatcher
    @type Ember._RouteMatcher
  */
  routeMatcher: Ember.computed(function() {
    var route = get(this, 'route');
    if (route) {
      return Ember._RouteMatcher.create({ route: route });
    }
  }),

  /**
    @private

    Check whether the route has dynamic segments and therefore takes
    a context.

    @property hasContext
    @type Boolean
  */
  hasContext: Ember.computed(function() {
    var routeMatcher = get(this, 'routeMatcher');
    if (routeMatcher) {
      return routeMatcher.identifiers.length > 0;
    }
  }),

  /**
    @private

    The model class associated with the current state. This property
    uses the `modelType` property, in order to allow it to be
    specified as a String.

    @property modelClass
    @type Ember.Object
  */
  modelClass: Ember.computed(function() {
    var modelType = get(this, 'modelType');

    if (typeof modelType === 'string') {
      return Ember.get(Ember.lookup, modelType);
    } else {
      return modelType;
    }
  }),

  /**
    @private

    Get the model class for the state. The heuristic is:

    * The state must have a single dynamic segment
    * The dynamic segment must end in `_id`
    * A dynamic segment like `blog_post_id` is converted into `BlogPost`
    * The name is then looked up on the passed in namespace

    The process of initializing an application with a router will
    pass the application's namespace into the router, which will be
    used here.

    @method modelClassFor
    @param namespace {Ember.Namespace}
  */
  modelClassFor: function(namespace) {
    var modelClass, routeMatcher, identifiers, match, className;

    // if an explicit modelType was specified, use that
    if (modelClass = get(this, 'modelClass')) { return modelClass; }

    // if the router has no lookup namespace, we won't be able to guess
    // the modelType
    if (!namespace) { return; }

    // make sure this state is actually a routable state
    routeMatcher = get(this, 'routeMatcher');
    if (!routeMatcher) { return; }

    // only guess modelType for states with a single dynamic segment
    // (no more, no fewer)
    identifiers = routeMatcher.identifiers;
    if (identifiers.length !== 2) { return; }

    // extract the `_id` from the end of the dynamic segment; if the
    // dynamic segment does not end in `_id`, we can't guess the
    // modelType
    match = identifiers[1].match(/^(.*)_id$/);
    if (!match) { return; }

    // convert the underscored type into a class form and look it up
    // on the router's namespace
    className = Ember.String.classify(match[1]);
    return get(namespace, className);
  },

  /**
    The default method that takes a `params` object and converts
    it into an object.

    By default, a params hash that looks like `{ post_id: 1 }`
    will be looked up as `namespace.Post.find(1)`. This is
    designed to work seamlessly with Ember Data, but will work
    fine with any class that has a `find` method.

    @method deserialize
    @param manager {Ember.StateManager}
    @param params {Hash}
  */
  deserialize: function(manager, params) {
    var modelClass, routeMatcher, param;

    if (modelClass = this.modelClassFor(get(manager, 'namespace'))) {
      Ember.assert("Expected "+modelClass.toString()+" to implement `find` for use in '"+this.get('path')+"' `deserialize`. Please implement the `find` method or overwrite `deserialize`.", modelClass.find);
      return modelClass.find(params[paramForClass(modelClass)]);
    }

    return params;
  },

  /**
    The default method that takes an object and converts it into
    a params hash.

    By default, if there is a single dynamic segment named
    `blog_post_id` and the object is a `BlogPost` with an
    `id` of `12`, the serialize method will produce:

        { blog_post_id: 12 }

    @method serialize
    @param manager {Ember.StateManager}
    @param context
  */
  serialize: function(manager, context) {
    var modelClass, routeMatcher, namespace, param, id;

    if (Ember.empty(context)) { return ''; }

    if (modelClass = this.modelClassFor(get(manager, 'namespace'))) {
      param = paramForClass(modelClass);
      id = get(context, 'id');
      context = {};
      context[param] = id;
    }

    return context;
  },

  /**
    @private
    @method resolvePath
    @param manager {Ember.StateManager}
    @param path {String}
  */
  resolvePath: function(manager, path) {
    if (get(this, 'isLeafRoute')) { return Ember.A(); }

    var childStates = get(this, 'childStates'), match;

    childStates = Ember.A(childStates.filterProperty('isRoutable'));

    childStates = childStates.sort(function(a, b) {
      var aDynamicSegments = get(a, 'routeMatcher.identifiers.length'),
          bDynamicSegments = get(b, 'routeMatcher.identifiers.length'),
          aRoute = get(a, 'route'),
          bRoute = get(b, 'route');

      if (aRoute.indexOf(bRoute) === 0) {
        return -1;
      } else if (bRoute.indexOf(aRoute) === 0) {
        return 1;
      }

      if (aDynamicSegments !== bDynamicSegments) {
        return aDynamicSegments - bDynamicSegments;
      }

      return get(b, 'route.length') - get(a, 'route.length');
    });

    var state = childStates.find(function(state) {
      var matcher = get(state, 'routeMatcher');
      if (match = matcher.match(path)) { return true; }
    });

    Ember.assert("Could not find state for path " + path, !!state);

    var resolvedState = Ember._ResolvedState.create({
      manager: manager,
      state: state,
      match: match
    });

    var states = state.resolvePath(manager, match.remaining);

    return Ember.A([resolvedState]).pushObjects(states);
  },

  /**
    @private

    Once `unroute` has finished unwinding, `routePath` will be called
    with the remainder of the route.

    For example, if you were in the /posts/1/comments state, and you
    moved into the /posts/2/comments state, `routePath` will be called
    on the state whose path is `/posts` with the path `/2/comments`.

    @method routePath
    @param manager {Ember.StateManager}
    @param path {String}
  */
  routePath: function(manager, path) {
    if (get(this, 'isLeafRoute')) { return; }

    var resolvedStates = this.resolvePath(manager, path),
        hasPromises = resolvedStates.some(function(s) { return get(s, 'hasPromise'); });

    function runTransition() {
      resolvedStates.forEach(function(rs) { rs.transition(); });
    }

    if (hasPromises) {
      manager.transitionTo('loading');

      Ember.assert('Loading state should be the child of a route', Ember.Routable.detect(get(manager, 'currentState.parentState')));
      Ember.assert('Loading state should not be a route', !Ember.Routable.detect(get(manager, 'currentState')));

      manager.handleStatePromises(resolvedStates, runTransition);
    } else {
      runTransition();
    }
  },

  /**
    @private

    When you move to a new route by pressing the back
    or forward button, this method is called first.

    Its job is to move the state manager into a parent
    state of the state it will eventually move into.

    @method unroutePath
    @param router {Ember.Router}
    @param path {String}
  */
  unroutePath: function(router, path) {
    var parentState = get(this, 'parentState');

    // If we're at the root state, we're done
    if (parentState === router) {
      return;
    }

    path = path.replace(/^(?=[^\/])/, "/");
    var absolutePath = this.absoluteRoute(router);

    var route = get(this, 'route');

    // If the current path is empty, move up one state,
    // because the index ('/') state must be a leaf node.
    if (route !== '/') {
      // If the current path is a prefix of the path we're trying
      // to go to, we're done.
      var index = path.indexOf(absolutePath),
          next = path.charAt(absolutePath.length);

      if (index === 0 && (next === "/" || next === "")) {
        return;
      }
    }

    // Transition to the parent and call unroute again.
    router.enterState({
      exitStates: [this],
      enterStates: [],
      finalState: parentState
    });

    router.send('unroutePath', path);
  },

  parentTemplate: Ember.computed(function() {
    var state = this, parentState, template;

    while (state = get(state, 'parentState')) {
      if (template = get(state, 'template')) {
        return template;
      }
    }

    return 'application';
  }),

  _template: Ember.computed(function(key, value) {
    if (arguments.length > 1) { return value; }

    if (value = get(this, 'template')) {
      return value;
    }

    // If no template was explicitly supplied convert
    // the class name into a template name. For example,
    // App.PostRoute will return `post`.
    var className = this.constructor.toString(), baseName;
    if (/^[^\[].*Route$/.test(className)) {
      baseName = className.match(/([^\.]+\.)*([^\.]+)/)[2];
      baseName = baseName.replace(/Route$/, '');
      return baseName.charAt(0).toLowerCase() + baseName.substr(1);
    }
  }),

  render: function(options) {
    options = options || {};

    var template = options.template || get(this, '_template'),
        parentTemplate = options.into || get(this, 'parentTemplate'),
        controller = get(this.router, parentTemplate + "Controller");

    var viewName = Ember.String.classify(template) + "View",
        viewClass = get(get(this.router, 'namespace'), viewName);

    viewClass = (viewClass || Ember.View).extend({
      templateName: template
    });

    controller.set('view', viewClass.create());
  },

  /**
    The `connectOutlets` event will be triggered once a
    state has been entered. It will be called with the
    route's context.

    @event connectOutlets
    @param router {Ember.Router}
    @param [context*]
  */
  connectOutlets: Ember.K,

  /**
   The `navigateAway` event will be triggered when the
   URL changes due to the back/forward button

   @event navigateAway
  */
  navigateAway: Ember.K
});

})();



(function() {
/**
@module ember
@submodule ember-routing
*/

/**
  @class Route
  @namespace Ember
  @extends Ember.State
  @uses Ember.Routable
*/
Ember.Route = Ember.State.extend(Ember.Routable);

})();



(function() {
var escapeForRegex = function(text) {
  return text.replace(/[\-\[\]{}()*+?.,\\\^\$|#\s]/g, "\\$&");
};

/**
  @class _RouteMatcher
  @namespace Ember
  @private
  @extends Ember.Object
*/
Ember._RouteMatcher = Ember.Object.extend({
  state: null,

  init: function() {
    var route = this.route,
        identifiers = [],
        count = 1,
        escaped;

    // Strip off leading slash if present
    if (route.charAt(0) === '/') {
      route = this.route = route.substr(1);
    }

    escaped = escapeForRegex(route);

    var regex = escaped.replace(/(:|(?:\\\*))([a-z_]+)(?=$|\/)/gi, function(match, type, id) {
      identifiers[count++] = id;
      switch (type) {
        case ":":
          return "([^/]+)";
        case "\\*":
          return "(.+)";
      }
    });

    this.identifiers = identifiers;
    this.regex = new RegExp("^/?" + regex);
  },

  match: function(path) {
    var match = path.match(this.regex);

    if (match) {
      var identifiers = this.identifiers,
          hash = {};

      for (var i=1, l=identifiers.length; i<l; i++) {
        hash[identifiers[i]] = match[i];
      }

      return {
        remaining: path.substr(match[0].length),
        hash: identifiers.length > 0 ? hash : null
      };
    }
  },

  generate: function(hash) {
    var identifiers = this.identifiers, route = this.route, id;
    for (var i=1, l=identifiers.length; i<l; i++) {
      id = identifiers[i];
      route = route.replace(new RegExp("(:|(\\*))" + id), hash[id]);
    }
    return route;
  }
});

})();



(function() {
/**
@module ember
@submodule ember-routing
*/

var get = Ember.get, set = Ember.set;

/*
  This file implements the `location` API used by Ember's router.

  That API is:

  getURL: returns the current URL
  setURL(path): sets the current URL
  onUpdateURL(callback): triggers the callback when the URL changes
  formatURL(url): formats `url` to be placed into `href` attribute

  Calling setURL will not trigger onUpdateURL callbacks.

  TODO: This should perhaps be moved so that it's visible in the doc output.
*/

/**
  Ember.Location returns an instance of the correct implementation of
  the `location` API.

  You can pass it a `implementation` ('hash', 'history', 'none') to force a
  particular implementation.

  @class Location
  @namespace Ember
  @static
*/
Ember.Location = {
  create: function(options) {
    var implementation = options && options.implementation;
    Ember.assert("Ember.Location.create: you must specify a 'implementation' option", !!implementation);

    var implementationClass = this.implementations[implementation];
    Ember.assert("Ember.Location.create: " + implementation + " is not a valid implementation", !!implementationClass);

    return implementationClass.create.apply(implementationClass, arguments);
  },

  registerImplementation: function(name, implementation) {
    this.implementations[name] = implementation;
  },

  implementations: {}
};

})();



(function() {
/**
@module ember
@submodule ember-routing
*/

var get = Ember.get, set = Ember.set;

/**
  Ember.NoneLocation does not interact with the browser. It is useful for
  testing, or when you need to manage state with your Router, but temporarily
  don't want it to muck with the URL (for example when you embed your
  application in a larger page).

  @class NoneLocation
  @namespace Ember
  @extends Ember.Object
*/
Ember.NoneLocation = Ember.Object.extend({
  path: '',

  getURL: function() {
    return get(this, 'path');
  },

  setURL: function(path) {
    set(this, 'path', path);
  },

  onUpdateURL: function(callback) {
    // We are not wired up to the browser, so we'll never trigger the callback.
  },

  formatURL: function(url) {
    // The return value is not overly meaningful, but we do not want to throw
    // errors when test code renders templates containing {{action href=true}}
    // helpers.
    return url;
  }
});

Ember.Location.registerImplementation('none', Ember.NoneLocation);

})();



(function() {
/**
@module ember
@submodule ember-routing
*/

var get = Ember.get, set = Ember.set;

/**
  Ember.HashLocation implements the location API using the browser's
  hash. At present, it relies on a hashchange event existing in the
  browser.

  @class HashLocation
  @namespace Ember
  @extends Ember.Object
*/
Ember.HashLocation = Ember.Object.extend({

  init: function() {
    set(this, 'location', get(this, 'location') || window.location);
  },

  /**
    @private

    Returns the current `location.hash`, minus the '#' at the front.

    @method getURL
  */
  getURL: function() {
    return get(this, 'location').hash.substr(1);
  },

  /**
    @private

    Set the `location.hash` and remembers what was set. This prevents
    `onUpdateURL` callbacks from triggering when the hash was set by
    `HashLocation`.

    @method setURL
    @param path {String}
  */
  setURL: function(path) {
    get(this, 'location').hash = path;
    set(this, 'lastSetURL', path);
  },

  /**
    @private

    Register a callback to be invoked when the hash changes. These
    callbacks will execute when the user presses the back or forward
    button, but not after `setURL` is invoked.

    @method onUpdateURL
    @param callback {Function}
  */
  onUpdateURL: function(callback) {
    var self = this;
    var guid = Ember.guidFor(this);

    Ember.$(window).bind('hashchange.ember-location-'+guid, function() {
      var path = location.hash.substr(1);
      if (get(self, 'lastSetURL') === path) { return; }

      set(self, 'lastSetURL', null);

      callback(location.hash.substr(1));
    });
  },

  /**
    @private

    Given a URL, formats it to be placed into the page as part
    of an element's `href` attribute.

    This is used, for example, when using the {{action}} helper
    to generate a URL based on an event.

    @method formatURL
    @param url {String}
  */
  formatURL: function(url) {
    return '#'+url;
  },

  willDestroy: function() {
    var guid = Ember.guidFor(this);

    Ember.$(window).unbind('hashchange.ember-location-'+guid);
  }
});

Ember.Location.registerImplementation('hash', Ember.HashLocation);

})();



(function() {
/**
@module ember
@submodule ember-routing
*/

var get = Ember.get, set = Ember.set;
var popstateReady = false;

/**
  Ember.HistoryLocation implements the location API using the browser's
  history.pushState API.

  @class HistoryLocation
  @namespace Ember
  @extends Ember.Object
*/
Ember.HistoryLocation = Ember.Object.extend({

  init: function() {
    set(this, 'location', get(this, 'location') || window.location);
    this.initState();
  },

  /**
    @private

    Used to set state on first call to setURL

    @method initState
  */
  initState: function() {
    this.replaceState(get(this, 'location').pathname);
    set(this, 'history', window.history);
  },

  /**
    Will be pre-pended to path upon state change

    @property rootURL
    @default '/'
  */
  rootURL: '/',

  /**
    @private

    Returns the current `location.pathname`.

    @method getURL
  */
  getURL: function() {
    return get(this, 'location').pathname;
  },

  /**
    @private

    Uses `history.pushState` to update the url without a page reload.

    @method setURL
    @param path {String}
  */
  setURL: function(path) {
    path = this.formatURL(path);

    if (this.getState().path !== path) {
      popstateReady = true;
      this.pushState(path);
    }
  },

  /**
   @private

   Get the current `history.state`

   @method getState
  */
  getState: function() {
    return get(this, 'history').state;
  },

  /**
   @private

   Pushes a new state

   @method pushState
   @param path {String}
  */
  pushState: function(path) {
    window.history.pushState({ path: path }, null, path);
  },

  /**
   @private

   Replaces the current state

   @method replaceState
   @param path {String}
  */
  replaceState: function(path) {
    window.history.replaceState({ path: path }, null, path);
  },

  /**
    @private

    Register a callback to be invoked whenever the browser
    history changes, including using forward and back buttons.

    @method onUpdateURL
    @param callback {Function}
  */
  onUpdateURL: function(callback) {
    var guid = Ember.guidFor(this);

    Ember.$(window).bind('popstate.ember-location-'+guid, function(e) {
      if(!popstateReady) {
        return;
      }
      callback(location.pathname);
    });
  },

  /**
    @private

    Used when using `{{action}}` helper.  The url is always appended to the rootURL.

    @method formatURL
    @param url {String}
  */
  formatURL: function(url) {
    var rootURL = get(this, 'rootURL');

    if (url !== '') {
      rootURL = rootURL.replace(/\/$/, '');
    }

    return rootURL + url;
  },

  willDestroy: function() {
    var guid = Ember.guidFor(this);

    Ember.$(window).unbind('popstate.ember-location-'+guid);
  }
});

Ember.Location.registerImplementation('history', Ember.HistoryLocation);

})();



(function() {

})();



(function() {
/**
@module ember
@submodule ember-routing
*/

var get = Ember.get, set = Ember.set;

var merge = function(original, hash) {
  for (var prop in hash) {
    if (!hash.hasOwnProperty(prop)) { continue; }
    if (original.hasOwnProperty(prop)) { continue; }

    original[prop] = hash[prop];
  }
};

/**
  `Ember.Router` is the subclass of `Ember.StateManager` responsible for providing URL-based
  application state detection. The `Ember.Router` instance of an application detects the browser URL
  at application load time and attempts to match it to a specific application state. Additionally
  the router will update the URL to reflect an application's state changes over time.

  ## Adding a Router Instance to Your Application
  An instance of Ember.Router can be associated with an instance of Ember.Application in one of two ways:

  You can provide a subclass of Ember.Router as the `Router` property of your application. An instance
  of this Router class will be instantiated and route detection will be enabled when the application's
  `initialize` method is called. The Router instance will be available as the `router` property
  of the application:

      App = Ember.Application.create({
        Router: Ember.Router.extend({ ... })
      });

      App.initialize();
      App.get('router') // an instance of App.Router

  If you want to define a Router instance elsewhere, you can pass the instance to the application's
  `initialize` method:

      App = Ember.Application.create();
      aRouter = Ember.Router.create({ ... });

      App.initialize(aRouter);
      App.get('router') // aRouter

  ## Adding Routes to a Router
  The `initialState` property of Ember.Router instances is named `root`. The state stored in this
  property must be a subclass of Ember.Route. The `root` route acts as the container for the
  set of routable states but is not routable itself. It should have states that are also subclasses
  of Ember.Route which each have a `route` property describing the URL pattern you would like to detect.

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            index: Ember.Route.extend({
              route: '/'
            }),
            ... additional Ember.Routes ...
          })
        })
      });
      App.initialize();


  When an application loads, Ember will parse the URL and attempt to find an Ember.Route within
  the application's states that matches. (The example URL-matching below will use the default
  'hash syntax' provided by `Ember.HashLocation`.)

  In the following route structure:

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            aRoute: Ember.Route.extend({
              route: '/'
            }),
            bRoute: Ember.Route.extend({
              route: '/alphabeta'
            })
          })
        })
      });
      App.initialize();

  Loading the page at the URL '#/' will detect the route property of 'root.aRoute' ('/') and
  transition the router first to the state named 'root' and then to the substate 'aRoute'.

  Respectively, loading the page at the URL '#/alphabeta' would detect the route property of
  'root.bRoute' ('/alphabeta') and transition the router first to the state named 'root' and
  then to the substate 'bRoute'.

  ## Adding Nested Routes to a Router
  Routes can contain nested subroutes each with their own `route` property describing the nested
  portion of the URL they would like to detect and handle. Router, like all instances of StateManager,
  cannot call `transitonTo` with an intermediary state. To avoid transitioning the Router into an
  intermediary state when detecting URLs, a Route with nested routes must define both a base `route`
  property for itself and a child Route with a `route` property of `'/'` which will be transitioned
  to when the base route is detected in the URL:

  Given the following application code:

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            aRoute: Ember.Route.extend({
              route: '/theBaseRouteForThisSet',

              indexSubRoute: Ember.Route.extend({
                route: '/'
              }),

              subRouteOne: Ember.Route.extend({
                route: '/subroute1'
              }),

              subRouteTwo: Ember.Route.extend({
                route: '/subRoute2'
              })

            })
          })
        })
      });
      App.initialize();

  When the application is loaded at '/theBaseRouteForThisSet' the Router will transition to the route
  at path 'root.aRoute' and then transition to state 'indexSubRoute'.

  When the application is loaded at '/theBaseRouteForThisSet/subRoute1' the Router will transition to
  the route at path 'root.aRoute' and then transition to state 'subRouteOne'.

  ## Route Transition Events
  Transitioning between Ember.Route instances (including the transition into the detected
  route when loading the application)  triggers the same transition events as state transitions for
  base `Ember.State`s. However, the default `setup` transition event is named `connectOutlets` on
  Ember.Router instances (see 'Changing View Hierarchy in Response To State Change').

  The following route structure when loaded with the URL "#/"

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            aRoute: Ember.Route.extend({
              route: '/',
              enter: function(router) {
                console.log("entering root.aRoute from", router.get('currentState.name'));
              },
              connectOutlets: function(router) {
                console.log("entered root.aRoute, fully transitioned to", router.get('currentState.path'));
              }
            })
          })
        })
      });
      App.initialize();

  Will result in console output of:

      'entering root.aRoute from root'
      'entered root.aRoute, fully transitioned to root.aRoute '

  Ember.Route has two additional callbacks for handling URL serialization and deserialization. See
  'Serializing/Deserializing URLs'

  ## Routes With Dynamic Segments
  An Ember.Route's `route` property can reference dynamic sections of the URL by prefacing a URL segment
  with the ':' character.  The values of these dynamic segments will be passed as a hash to the
  `deserialize` method of the matching Route (see 'Serializing/Deserializing URLs').

  ## Serializing/Deserializing URLs
  Ember.Route has two callbacks for associating a particular object context with a URL: `serialize`
  for converting an object into a parameters hash to fill dynamic segments of a URL and `deserialize`
  for converting a hash of dynamic segments from the URL into the appropriate object.

  ### Deserializing A URL's Dynamic Segments
  When an application is first loaded or the URL is changed manually (e.g. through the browser's
  back button) the `deserialize` method of the URL's matching Ember.Route will be called with
  the application's router as its first argument and a hash of the URL's dynamic segments and values
  as its second argument.

  The following route structure when loaded with the URL "#/fixed/thefirstvalue/anotherFixed/thesecondvalue":

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            aRoute: Ember.Route.extend({
              route: '/fixed/:dynamicSectionA/anotherFixed/:dynamicSectionB',
              deserialize: function(router, params) {}
            })
          })
        })
      });
      App.initialize();

  Will call the 'deserialize' method of the Route instance at the path 'root.aRoute' with the
  following hash as its second argument:

      {
        dynamicSectionA: 'thefirstvalue',
        dynamicSectionB: 'thesecondvalue'
      }

  Within `deserialize` you should use this information to retrieve or create an appropriate context
  object for the given URL (e.g. by loading from a remote API or accessing the browser's
  `localStorage`). This object must be the `return` value of `deserialize` and will be
  passed to the Route's `connectOutlets` and `serialize` methods.

  When an application's state is changed from within the application itself, the context provided for
  the transition will be passed and `deserialize` is not called (see 'Transitions Between States').

  ### Serializing An Object For URLs with Dynamic Segments
  When transitioning into a Route whose `route` property contains dynamic segments the Route's
  `serialize` method is called with the Route's router as the first argument and the Route's
  context as the second argument.  The return value of `serialize` will be used to populate the
  dynamic segments and should be an object with keys that match the names of the dynamic sections.

  Given the following route structure:

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            aRoute: Ember.Route.extend({
              route: '/'
            }),
            bRoute: Ember.Route.extend({
              route: '/staticSection/:someDynamicSegment',
              serialize: function(router, context) {
                return {
                  someDynamicSegment: context.get('name')
                }
              }
            })
          })
        })
      });
      App.initialize();


  Transitioning to "root.bRoute" with a context of `Object.create({name: 'Yehuda'})` will call
  the Route's `serialize` method with the context as its second argument and update the URL to
  '#/staticSection/Yehuda'.

  ## Transitions Between States
  Once a routed application has initialized its state based on the entry URL, subsequent transitions to other
  states will update the URL if the entered Route has a `route` property. Given the following route structure
  loaded at the URL '#/':

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            aRoute: Ember.Route.extend({
              route: '/',
              moveElsewhere: Ember.Route.transitionTo('bRoute')
            }),
            bRoute: Ember.Route.extend({
              route: '/someOtherLocation'
            })
          })
        })
      });
      App.initialize();

  And application code:

      App.get('router').send('moveElsewhere');

  Will transition the application's state to 'root.bRoute' and trigger an update of the URL to
  '#/someOtherLocation'.

  For URL patterns with dynamic segments a context can be supplied as the second argument to `send`.
  The router will match dynamic segments names to keys on this object and fill in the URL with the
  supplied values. Given the following state structure loaded at the URL '#/':

      App = Ember.Application.create({
        Router: Ember.Router.extend({
          root: Ember.Route.extend({
            aRoute: Ember.Route.extend({
              route: '/',
              moveElsewhere: Ember.Route.transitionTo('bRoute')
            }),
            bRoute: Ember.Route.extend({
              route: '/a/route/:dynamicSection/:anotherDynamicSection',
              connectOutlets: function(router, context) {},
            })
          })
        })
      });
      App.initialize();

  And application code:

      App.get('router').send('moveElsewhere', {
        dynamicSection: '42',
        anotherDynamicSection: 'Life'
      });

  Will transition the application's state to 'root.bRoute' and trigger an update of the URL to
  '#/a/route/42/Life'.

  The context argument will also be passed as the second argument to the `serialize` method call.

  ## Injection of Controller Singletons
  During application initialization Ember will detect properties of the application ending in 'Controller',
  create singleton instances of each class, and assign them as properties on the router.  The property name
  will be the UpperCamel name converted to lowerCamel format. These controller classes should be subclasses
  of Ember.ObjectController, Ember.ArrayController, Ember.Controller, or a custom Ember.Object that includes the
  Ember.ControllerMixin mixin.

  ``` javascript
  App = Ember.Application.create({
    FooController: Ember.Object.create(Ember.ControllerMixin),
    Router: Ember.Router.extend({ ... })
  });

  App.get('router.fooController'); // instance of App.FooController
  ```

  The controller singletons will have their `namespace` property set to the application and their `target`
  property set to the application's router singleton for easy integration with Ember's user event system.
  See 'Changing View Hierarchy in Response To State Change' and 'Responding to User-initiated Events.'

  ## Responding to User-initiated Events
  Controller instances injected into the router at application initialization have their `target` property
  set to the application's router instance. These controllers will also be the default `context` for their
  associated views.  Uses of the `{{action}}` helper will automatically target the application's router.

  Given the following application entered at the URL '#/':

  ``` javascript
  App = Ember.Application.create({
    Router: Ember.Router.extend({
      root: Ember.Route.extend({
        aRoute: Ember.Route.extend({
          route: '/',
          anActionOnTheRouter: function(router, context) {
            router.transitionTo('anotherState', context);
          }
        })
        anotherState: Ember.Route.extend({
          route: '/differentUrl',
          connectOutlets: function(router, context) {

          }
        })
      })
    })
  });
  App.initialize();
  ```

  The following template:

  ``` handlebars
  <script type="text/x-handlebars" data-template-name="aView">
      <h1><a {{action anActionOnTheRouter}}>{{title}}</a></h1>
  </script>
  ```

  Will delegate `click` events on the rendered `h1` to the application's router instance. In this case the
  `anActionOnTheRouter` method of the state at 'root.aRoute' will be called with the view's controller
  as the context argument. This context will be passed to the `connectOutlets` as its second argument.

  Different `context` can be supplied from within the `{{action}}` helper, allowing specific context passing
  between application states:

  ``` handlebars
  <script type="text/x-handlebars" data-template-name="photos">
    {{#each photo in controller}}
      <h1><a {{action showPhoto photo}}>{{title}}</a></h1>
    {{/each}}
  </script>
  ```

  See `Handlebars.helpers.action` for additional usage examples.


  ## Changing View Hierarchy in Response To State Change

  Changes in application state that change the URL should be accompanied by associated changes in view
  hierarchy.  This can be accomplished by calling 'connectOutlet' on the injected controller singletons from
  within the 'connectOutlets' event of an Ember.Route:

  ``` javascript
  App = Ember.Application.create({
    OneController: Ember.ObjectController.extend(),
    OneView: Ember.View.extend(),

    AnotherController: Ember.ObjectController.extend(),
    AnotherView: Ember.View.extend(),

    Router: Ember.Router.extend({
      root: Ember.Route.extend({
        aRoute: Ember.Route.extend({
          route: '/',
          connectOutlets: function(router, context) {
            router.get('oneController').connectOutlet('another');
          },
        })
      })
    })
  });
  App.initialize();
  ```


  This will detect the '{{outlet}}' portion of `oneController`'s view (an instance of `App.OneView`) and
  fill it with a rendered instance of `App.AnotherView` whose `context` will be the single instance of
  `App.AnotherController` stored on the router in the `anotherController` property.

  For more information about Outlets, see `Ember.Handlebars.helpers.outlet`. For additional information on
  the `connectOutlet` method, see `Ember.Controller.connectOutlet`. For more information on
  controller injections, see `Ember.Application#initialize()`. For additional information about view context,
  see `Ember.View`.

  @class Router
  @namespace Ember
  @extends Ember.StateManager
*/
Ember.Router = Ember.StateManager.extend(
/** @scope Ember.Router.prototype */ {

  /**
    @property initialState
    @type String
    @default 'root'
  */
  initialState: 'root',

  /**
    The `Ember.Location` implementation to be used to manage the application
    URL state. The following values are supported:

    * 'hash': Uses URL fragment identifiers (like #/blog/1) for routing.
    * 'history': Uses the browser's history.pushstate API for routing. Only works in
       modern browsers with pushstate support.
    * 'none': Does not read or set the browser URL, but still allows for
      routing to happen. Useful for testing.

    @property location
    @type String
    @default 'hash'
  */
  location: 'hash',

  /**
    This is only used when a history location is used so that applications that
    don't live at the root of the domain can append paths to their root.

    @property rootURL
    @type String
    @default '/'
  */

  rootURL: '/',

  transitionTo: function() {
    this.abortRoutingPromises();
    this._super.apply(this, arguments);
  },

  route: function(path) {
    this.abortRoutingPromises();

    set(this, 'isRouting', true);

    var routableState;

    try {
      path = path.replace(get(this, 'rootURL'), '');
      path = path.replace(/^(?=[^\/])/, "/");

      this.send('navigateAway');
      this.send('unroutePath', path);

      routableState = get(this, 'currentState');
      while (routableState && !routableState.get('isRoutable')) {
        routableState = get(routableState, 'parentState');
      }
      var currentURL = routableState ? routableState.absoluteRoute(this) : '';
      var rest = path.substr(currentURL.length);

      this.send('routePath', rest);
    } finally {
      set(this, 'isRouting', false);
    }

    routableState = get(this, 'currentState');
    while (routableState && !routableState.get('isRoutable')) {
      routableState = get(routableState, 'parentState');
    }

    if (routableState) {
      routableState.updateRoute(this, get(this, 'location'));
    }
  },

  urlFor: function(path, hash) {
    var currentState = get(this, 'currentState') || this,
        state = this.findStateByPath(currentState, path);

    Ember.assert(Ember.String.fmt("Could not find route with path '%@'", [path]), state);
    Ember.assert(Ember.String.fmt("To get a URL for the state '%@', it must have a `route` property.", [path]), get(state, 'routeMatcher'));

    var location = get(this, 'location'),
        absoluteRoute = state.absoluteRoute(this, hash);

    return location.formatURL(absoluteRoute);
  },

  urlForEvent: function(eventName) {
    var contexts = Array.prototype.slice.call(arguments, 1);
    var currentState = get(this, 'currentState');
    var targetStateName = currentState.lookupEventTransition(eventName);

    Ember.assert(Ember.String.fmt("You must specify a target state for event '%@' in order to link to it in the current state '%@'.", [eventName, get(currentState, 'path')]), targetStateName);

    var targetState = this.findStateByPath(currentState, targetStateName);

    Ember.assert("Your target state name " + targetStateName + " for event " + eventName + " did not resolve to a state", targetState);

    var hash = this.serializeRecursively(targetState, contexts, {});

    return this.urlFor(targetStateName, hash);
  },

  serializeRecursively: function(state, contexts, hash) {
    var parentState,
        context = get(state, 'hasContext') ? contexts.pop() : null;
    merge(hash, state.serialize(this, context));
    parentState = state.get("parentState");
    if (parentState && parentState instanceof Ember.Route) {
      return this.serializeRecursively(parentState, contexts, hash);
    } else {
      return hash;
    }
  },

  abortRoutingPromises: function() {
    if (this._routingPromises) {
      this._routingPromises.abort();
      this._routingPromises = null;
    }
  },

  handleStatePromises: function(states, complete) {
    this.abortRoutingPromises();

    this.set('isLocked', true);

    var manager = this;

    this._routingPromises = Ember._PromiseChain.create({
      promises: states.slice(),

      successCallback: function() {
        manager.set('isLocked', false);
        complete();
      },

      failureCallback: function() {
        throw "Unable to load object";
      },

      promiseSuccessCallback: function(item, args) {
        set(item, 'object', args[0]);
      },

      abortCallback: function() {
        manager.set('isLocked', false);
      }
    }).start();
  },

  moveStatesIntoRoot: function() {
    this.root = Ember.Route.extend();

    for (var name in this) {
      if (name === "constructor") { continue; }

      var state = this[name];

      if (state instanceof Ember.Route || Ember.Route.detect(state)) {
        this.root[name] = state;
        delete this[name];
      }
    }
  },

  init: function() {
    if (!this.root) {
      this.moveStatesIntoRoot();
    }

    this._super();

    var location = get(this, 'location'),
        rootURL = get(this, 'rootURL');

    if ('string' === typeof location) {
      set(this, 'location', Ember.Location.create({
        implementation: location,
        rootURL: rootURL
      }));
    }

    this.assignRouter(this, this);
  },

  assignRouter: function(state, router) {
    state.router = router;

    var childStates = state.states;

    if (childStates) {
      for (var stateName in childStates) {
        if (!childStates.hasOwnProperty(stateName)) { continue; }
        this.assignRouter(childStates[stateName], router);
      }
    }
  },

  willDestroy: function() {
    get(this, 'location').destroy();
  }
});

})();



(function() {
/**
Ember Routing

@module ember
@submodule ember-routing
@requires ember-states
*/

})();

(function() {
// ==========================================================================
// Project:   metamorph
// Copyright: ©2011 My Company Inc. All rights reserved.
// ==========================================================================

(function(window) {

  var K = function(){},
      guid = 0,
      document = window.document,

      // Feature-detect the W3C range API, the extended check is for IE9 which only partially supports ranges
      supportsRange = ('createRange' in document) && (typeof Range !== 'undefined') && Range.prototype.createContextualFragment,

      // Internet Explorer prior to 9 does not allow setting innerHTML if the first element
      // is a "zero-scope" element. This problem can be worked around by making
      // the first node an invisible text node. We, like Modernizr, use &shy;
      needsShy = (function(){
        var testEl = document.createElement('div');
        testEl.innerHTML = "<div></div>";
        testEl.firstChild.innerHTML = "<script></script>";
        return testEl.firstChild.innerHTML === '';
      })();

  // Constructor that supports either Metamorph('foo') or new
  // Metamorph('foo');
  //
  // Takes a string of HTML as the argument.

  var Metamorph = function(html) {
    var self;

    if (this instanceof Metamorph) {
      self = this;
    } else {
      self = new K();
    }

    self.innerHTML = html;
    var myGuid = 'metamorph-'+(guid++);
    self.start = myGuid + '-start';
    self.end = myGuid + '-end';

    return self;
  };

  K.prototype = Metamorph.prototype;

  var rangeFor, htmlFunc, removeFunc, outerHTMLFunc, appendToFunc, afterFunc, prependFunc, startTagFunc, endTagFunc;

  outerHTMLFunc = function() {
    return this.startTag() + this.innerHTML + this.endTag();
  };

  startTagFunc = function() {
    return "<script id='" + this.start + "' type='text/x-placeholder'></script>";
  };

  endTagFunc = function() {
    return "<script id='" + this.end + "' type='text/x-placeholder'></script>";
  };

  // If we have the W3C range API, this process is relatively straight forward.
  if (supportsRange) {

    // Get a range for the current morph. Optionally include the starting and
    // ending placeholders.
    rangeFor = function(morph, outerToo) {
      var range = document.createRange();
      var before = document.getElementById(morph.start);
      var after = document.getElementById(morph.end);

      if (outerToo) {
        range.setStartBefore(before);
        range.setEndAfter(after);
      } else {
        range.setStartAfter(before);
        range.setEndBefore(after);
      }

      return range;
    };

    htmlFunc = function(html, outerToo) {
      // get a range for the current metamorph object
      var range = rangeFor(this, outerToo);

      // delete the contents of the range, which will be the
      // nodes between the starting and ending placeholder.
      range.deleteContents();

      // create a new document fragment for the HTML
      var fragment = range.createContextualFragment(html);

      // insert the fragment into the range
      range.insertNode(fragment);
    };

    removeFunc = function() {
      // get a range for the current metamorph object including
      // the starting and ending placeholders.
      var range = rangeFor(this, true);

      // delete the entire range.
      range.deleteContents();
    };

    appendToFunc = function(node) {
      var range = document.createRange();
      range.setStart(node);
      range.collapse(false);
      var frag = range.createContextualFragment(this.outerHTML());
      node.appendChild(frag);
    };

    afterFunc = function(html) {
      var range = document.createRange();
      var after = document.getElementById(this.end);

      range.setStartAfter(after);
      range.setEndAfter(after);

      var fragment = range.createContextualFragment(html);
      range.insertNode(fragment);
    };

    prependFunc = function(html) {
      var range = document.createRange();
      var start = document.getElementById(this.start);

      range.setStartAfter(start);
      range.setEndAfter(start);

      var fragment = range.createContextualFragment(html);
      range.insertNode(fragment);
    };

  } else {
    /**
     * This code is mostly taken from jQuery, with one exception. In jQuery's case, we
     * have some HTML and we need to figure out how to convert it into some nodes.
     *
     * In this case, jQuery needs to scan the HTML looking for an opening tag and use
     * that as the key for the wrap map. In our case, we know the parent node, and
     * can use its type as the key for the wrap map.
     **/
    var wrapMap = {
      select: [ 1, "<select multiple='multiple'>", "</select>" ],
      fieldset: [ 1, "<fieldset>", "</fieldset>" ],
      table: [ 1, "<table>", "</table>" ],
      tbody: [ 2, "<table><tbody>", "</tbody></table>" ],
      tr: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
      colgroup: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
      map: [ 1, "<map>", "</map>" ],
      _default: [ 0, "", "" ]
    };

    /**
     * Given a parent node and some HTML, generate a set of nodes. Return the first
     * node, which will allow us to traverse the rest using nextSibling.
     *
     * We need to do this because innerHTML in IE does not really parse the nodes.
     **/
    var firstNodeFor = function(parentNode, html) {
      var arr = wrapMap[parentNode.tagName.toLowerCase()] || wrapMap._default;
      var depth = arr[0], start = arr[1], end = arr[2];

      if (needsShy) { html = '&shy;'+html; }

      var element = document.createElement('div');
      element.innerHTML = start + html + end;

      for (var i=0; i<=depth; i++) {
        element = element.firstChild;
      }

      // Look for &shy; to remove it.
      if (needsShy) {
        var shyElement = element;

        // Sometimes we get nameless elements with the shy inside
        while (shyElement.nodeType === 1 && !shyElement.nodeName) {
          shyElement = shyElement.firstChild;
        }

        // At this point it's the actual unicode character.
        if (shyElement.nodeType === 3 && shyElement.nodeValue.charAt(0) === "\u00AD") {
          shyElement.nodeValue = shyElement.nodeValue.slice(1);
        }
      }

      return element;
    };

    /**
     * In some cases, Internet Explorer can create an anonymous node in
     * the hierarchy with no tagName. You can create this scenario via:
     *
     *     div = document.createElement("div");
     *     div.innerHTML = "<table>&shy<script></script><tr><td>hi</td></tr></table>";
     *     div.firstChild.firstChild.tagName //=> ""
     *
     * If our script markers are inside such a node, we need to find that
     * node and use *it* as the marker.
     **/
    var realNode = function(start) {
      while (start.parentNode.tagName === "") {
        start = start.parentNode;
      }

      return start;
    };

    /**
     * When automatically adding a tbody, Internet Explorer inserts the
     * tbody immediately before the first <tr>. Other browsers create it
     * before the first node, no matter what.
     *
     * This means the the following code:
     *
     *     div = document.createElement("div");
     *     div.innerHTML = "<table><script id='first'></script><tr><td>hi</td></tr><script id='last'></script></table>
     *
     * Generates the following DOM in IE:
     *
     *     + div
     *       + table
     *         - script id='first'
     *         + tbody
     *           + tr
     *             + td
     *               - "hi"
     *           - script id='last'
     *
     * Which means that the two script tags, even though they were
     * inserted at the same point in the hierarchy in the original
     * HTML, now have different parents.
     *
     * This code reparents the first script tag by making it the tbody's
     * first child.
     **/
    var fixParentage = function(start, end) {
      if (start.parentNode !== end.parentNode) {
        end.parentNode.insertBefore(start, end.parentNode.firstChild);
      }
    };

    htmlFunc = function(html, outerToo) {
      // get the real starting node. see realNode for details.
      var start = realNode(document.getElementById(this.start));
      var end = document.getElementById(this.end);
      var parentNode = end.parentNode;
      var node, nextSibling, last;

      // make sure that the start and end nodes share the same
      // parent. If not, fix it.
      fixParentage(start, end);

      // remove all of the nodes after the starting placeholder and
      // before the ending placeholder.
      node = start.nextSibling;
      while (node) {
        nextSibling = node.nextSibling;
        last = node === end;

        // if this is the last node, and we want to remove it as well,
        // set the `end` node to the next sibling. This is because
        // for the rest of the function, we insert the new nodes
        // before the end (note that insertBefore(node, null) is
        // the same as appendChild(node)).
        //
        // if we do not want to remove it, just break.
        if (last) {
          if (outerToo) { end = node.nextSibling; } else { break; }
        }

        node.parentNode.removeChild(node);

        // if this is the last node and we didn't break before
        // (because we wanted to remove the outer nodes), break
        // now.
        if (last) { break; }

        node = nextSibling;
      }

      // get the first node for the HTML string, even in cases like
      // tables and lists where a simple innerHTML on a div would
      // swallow some of the content.
      node = firstNodeFor(start.parentNode, html);

      // copy the nodes for the HTML between the starting and ending
      // placeholder.
      while (node) {
        nextSibling = node.nextSibling;
        parentNode.insertBefore(node, end);
        node = nextSibling;
      }
    };

    // remove the nodes in the DOM representing this metamorph.
    //
    // this includes the starting and ending placeholders.
    removeFunc = function() {
      var start = realNode(document.getElementById(this.start));
      var end = document.getElementById(this.end);

      this.html('');
      start.parentNode.removeChild(start);
      end.parentNode.removeChild(end);
    };

    appendToFunc = function(parentNode) {
      var node = firstNodeFor(parentNode, this.outerHTML());

      while (node) {
        nextSibling = node.nextSibling;
        parentNode.appendChild(node);
        node = nextSibling;
      }
    };

    afterFunc = function(html) {
      // get the real starting node. see realNode for details.
      var end = document.getElementById(this.end);
      var insertBefore = end.nextSibling;
      var parentNode = end.parentNode;
      var nextSibling;
      var node;

      // get the first node for the HTML string, even in cases like
      // tables and lists where a simple innerHTML on a div would
      // swallow some of the content.
      node = firstNodeFor(parentNode, html);

      // copy the nodes for the HTML between the starting and ending
      // placeholder.
      while (node) {
        nextSibling = node.nextSibling;
        parentNode.insertBefore(node, insertBefore);
        node = nextSibling;
      }
    };

    prependFunc = function(html) {
      var start = document.getElementById(this.start);
      var parentNode = start.parentNode;
      var nextSibling;
      var node;

      node = firstNodeFor(parentNode, html);
      var insertBefore = start.nextSibling;

      while (node) {
        nextSibling = node.nextSibling;
        parentNode.insertBefore(node, insertBefore);
        node = nextSibling;
      }
    }
  }

  Metamorph.prototype.html = function(html) {
    this.checkRemoved();
    if (html === undefined) { return this.innerHTML; }

    htmlFunc.call(this, html);

    this.innerHTML = html;
  };

  Metamorph.prototype.replaceWith = function(html) {
    this.checkRemoved();
    htmlFunc.call(this, html, true);
  };

  Metamorph.prototype.remove = removeFunc;
  Metamorph.prototype.outerHTML = outerHTMLFunc;
  Metamorph.prototype.appendTo = appendToFunc;
  Metamorph.prototype.after = afterFunc;
  Metamorph.prototype.prepend = prependFunc;
  Metamorph.prototype.startTag = startTagFunc;
  Metamorph.prototype.endTag = endTagFunc;

  Metamorph.prototype.isRemoved = function() {
    var before = document.getElementById(this.start);
    var after = document.getElementById(this.end);

    return !before || !after;
  };

  Metamorph.prototype.checkRemoved = function() {
    if (this.isRemoved()) {
      throw new Error("Cannot perform operations on a Metamorph that is not in the DOM.");
    }
  };

  window.Metamorph = Metamorph;
})(this);


})();

(function() {
/**
@module ember
@submodule ember-handlebars
*/

var objectCreate = Ember.create;

var Handlebars = Ember.imports.Handlebars;
Ember.assert("Ember Handlebars requires Handlebars 1.0.beta.5 or greater", Handlebars && Handlebars.VERSION.match(/^1\.0\.beta\.[56789]$|^1\.0\.rc\.[123456789]+/));

/**
  Prepares the Handlebars templating library for use inside Ember's view
  system.

  The Ember.Handlebars object is the standard Handlebars library, extended to use
  Ember's get() method instead of direct property access, which allows
  computed properties to be used inside templates.

  To create an Ember.Handlebars template, call Ember.Handlebars.compile().  This will
  return a function that can be used by Ember.View for rendering.

  @class Handlebars
  @namespace Ember
*/
Ember.Handlebars = objectCreate(Handlebars);

/**
@class helpers
@namespace Ember.Handlebars
*/
Ember.Handlebars.helpers = objectCreate(Handlebars.helpers);

/**
  Override the the opcode compiler and JavaScript compiler for Handlebars.

  @class Compiler
  @namespace Ember.Handlebars
  @private
  @constructor
*/
Ember.Handlebars.Compiler = function() {};

// Handlebars.Compiler doesn't exist in runtime-only
if (Handlebars.Compiler) {
  Ember.Handlebars.Compiler.prototype = objectCreate(Handlebars.Compiler.prototype);
}

Ember.Handlebars.Compiler.prototype.compiler = Ember.Handlebars.Compiler;

/**
  @class JavaScriptCompiler
  @namespace Ember.Handlebars
  @private
  @constructor
*/
Ember.Handlebars.JavaScriptCompiler = function() {};

// Handlebars.JavaScriptCompiler doesn't exist in runtime-only
if (Handlebars.JavaScriptCompiler) {
  Ember.Handlebars.JavaScriptCompiler.prototype = objectCreate(Handlebars.JavaScriptCompiler.prototype);
  Ember.Handlebars.JavaScriptCompiler.prototype.compiler = Ember.Handlebars.JavaScriptCompiler;
}


Ember.Handlebars.JavaScriptCompiler.prototype.namespace = "Ember.Handlebars";


Ember.Handlebars.JavaScriptCompiler.prototype.initializeBuffer = function() {
  return "''";
};

/**
  @private

  Override the default buffer for Ember Handlebars. By default, Handlebars creates
  an empty String at the beginning of each invocation and appends to it. Ember's
  Handlebars overrides this to append to a single shared buffer.

  @method appendToBuffer
  @param string {String}
*/
Ember.Handlebars.JavaScriptCompiler.prototype.appendToBuffer = function(string) {
  return "data.buffer.push("+string+");";
};

/**
  @private

  Rewrite simple mustaches from `{{foo}}` to `{{bind "foo"}}`. This means that all simple
  mustaches in Ember's Handlebars will also set up an observer to keep the DOM
  up to date when the underlying property changes.

  @method mustache
  @for Ember.Handlebars.Compiler
  @param mustache
*/
Ember.Handlebars.Compiler.prototype.mustache = function(mustache) {
  if (mustache.params.length || mustache.hash) {
    return Handlebars.Compiler.prototype.mustache.call(this, mustache);
  } else {
    var id = new Handlebars.AST.IdNode(['_triageMustache']);

    // Update the mustache node to include a hash value indicating whether the original node
    // was escaped. This will allow us to properly escape values when the underlying value
    // changes and we need to re-render the value.
    if(!mustache.escaped) {
      mustache.hash = mustache.hash || new Handlebars.AST.HashNode([]);
      mustache.hash.pairs.push(["unescaped", new Handlebars.AST.StringNode("true")]);
    }
    mustache = new Handlebars.AST.MustacheNode([id].concat([mustache.id]), mustache.hash, !mustache.escaped);
    return Handlebars.Compiler.prototype.mustache.call(this, mustache);
  }
};

/**
  Used for precompilation of Ember Handlebars templates. This will not be used during normal
  app execution.

  @method precompile
  @for Ember.Handlebars
  @static
  @param {String} string The template to precompile
*/
Ember.Handlebars.precompile = function(string) {
  var ast = Handlebars.parse(string);

  var options = {
    knownHelpers: {
      action: true,
      unbound: true,
      bindAttr: true,
      template: true,
      view: true,
      _triageMustache: true
    },
    data: true,
    stringParams: true
  };

  var environment = new Ember.Handlebars.Compiler().compile(ast, options);
  return new Ember.Handlebars.JavaScriptCompiler().compile(environment, options, undefined, true);
};

// We don't support this for Handlebars runtime-only
if (Handlebars.compile) {
  /**
    The entry point for Ember Handlebars. This replaces the default Handlebars.compile and turns on
    template-local data and String parameters.

    @method compile
    @for Ember.Handlebars
    @static
    @param {String} string The template to compile
    @return {Function}
  */
  Ember.Handlebars.compile = function(string) {
    var ast = Handlebars.parse(string);
    var options = { data: true, stringParams: true };
    var environment = new Ember.Handlebars.Compiler().compile(ast, options);
    var templateSpec = new Ember.Handlebars.JavaScriptCompiler().compile(environment, options, undefined, true);

    return Handlebars.template(templateSpec);
  };
}

/**
  @private

  If a path starts with a reserved keyword, returns the root
  that should be used.

  @method normalizePath
  @for Ember
  @param root {Object}
  @param path {String}
  @param data {Hash}
*/
var normalizePath = Ember.Handlebars.normalizePath = function(root, path, data) {
  var keywords = (data && data.keywords) || {},
      keyword, isKeyword;

  // Get the first segment of the path. For example, if the
  // path is "foo.bar.baz", returns "foo".
  keyword = path.split('.', 1)[0];

  // Test to see if the first path is a keyword that has been
  // passed along in the view's data hash. If so, we will treat
  // that object as the new root.
  if (keywords.hasOwnProperty(keyword)) {
    // Look up the value in the template's data hash.
    root = keywords[keyword];
    isKeyword = true;

    // Handle cases where the entire path is the reserved
    // word. In that case, return the object itself.
    if (path === keyword) {
      path = '';
    } else {
      // Strip the keyword from the path and look up
      // the remainder from the newly found root.
      path = path.substr(keyword.length+1);
    }
  }

  return { root: root, path: path, isKeyword: isKeyword };
};


/**
  Lookup both on root and on window. If the path starts with
  a keyword, the corresponding object will be looked up in the
  template's data hash and used to resolve the path.

  @method get
  @for Ember.Handlebars
  @param {Object} root The object to look up the property on
  @param {String} path The path to be lookedup
  @param {Object} options The template's option hash
*/
Ember.Handlebars.get = function(root, path, options) {
  var data = options && options.data,
      normalizedPath = normalizePath(root, path, data),
      value;

  // In cases where the path begins with a keyword, change the
  // root to the value represented by that keyword, and ensure
  // the path is relative to it.
  root = normalizedPath.root;
  path = normalizedPath.path;

  value = Ember.get(root, path);

  // If the path starts with a capital letter, look it up on Ember.lookup,
  // which defaults to the `window` object in browsers.
  if (value === undefined && root !== Ember.lookup && Ember.isGlobalPath(path)) {
    value = Ember.get(Ember.lookup, path);
  }
  return value;
};
Ember.Handlebars.getPath = Ember.deprecateFunc('`Ember.Handlebars.getPath` has been changed to `Ember.Handlebars.get` for consistency.', Ember.Handlebars.get);

/**
  @private

  Registers a helper in Handlebars that will be called if no property with the
  given name can be found on the current context object, and no helper with
  that name is registered.

  This throws an exception with a more helpful error message so the user can
  track down where the problem is happening.

  @method helperMissing
  @for Ember.Handlebars.helpers
  @param {String} path
  @param {Hash} options
*/
Ember.Handlebars.registerHelper('helperMissing', function(path, options) {
  var error, view = "";

  error = "%@ Handlebars error: Could not find property '%@' on object %@.";
  if (options.data){
    view = options.data.view;
  }
  throw new Ember.Error(Ember.String.fmt(error, [view, path, this]));
});


})();



(function() {
/**
  @method htmlSafe
  @for Ember.String
  @static
*/
Ember.String.htmlSafe = function(str) {
  return new Handlebars.SafeString(str);
};

var htmlSafe = Ember.String.htmlSafe;

if (Ember.EXTEND_PROTOTYPES === true || Ember.EXTEND_PROTOTYPES.String) {

  /**
    See {{#crossLink "Ember.String/htmlSafe"}}{{/crossLink}}

    @method htmlSafe
    @for String
  */
  String.prototype.htmlSafe = function() {
    return htmlSafe(this);
  };
}

})();



(function() {
/*jshint newcap:false*/
/**
@module ember
@submodule ember-handlebars
*/

var set = Ember.set, get = Ember.get;

// DOMManager should just abstract dom manipulation between jquery and metamorph
var DOMManager = {
  remove: function(view) {
    view.morph.remove();
  },

  prepend: function(view, html) {
    view.morph.prepend(html);
  },

  after: function(view, html) {
    view.morph.after(html);
  },

  html: function(view, html) {
    view.morph.html(html);
  },

  // This is messed up.
  replace: function(view) {
    var morph = view.morph;

    view.transitionTo('preRender');
    view.clearRenderedChildren();
    var buffer = view.renderToBuffer();

    Ember.run.schedule('render', this, function() {
      if (get(view, 'isDestroyed')) { return; }
      view.invalidateRecursively('element');
      view._notifyWillInsertElement();
      morph.replaceWith(buffer.string());
      view.transitionTo('inDOM');
      view._notifyDidInsertElement();
    });
  },

  empty: function(view) {
    view.morph.html("");
  }
};

// The `morph` and `outerHTML` properties are internal only
// and not observable.

/**
  @class _Metamorph
  @namespace Ember
  @extends Ember.Mixin
  @private
*/
Ember._Metamorph = Ember.Mixin.create({
  isVirtual: true,
  tagName: '',

  instrumentName: 'render.metamorph',

  init: function() {
    this._super();
    this.morph = Metamorph();
  },

  beforeRender: function(buffer) {
    buffer.push(this.morph.startTag());
  },

  afterRender: function(buffer) {
    buffer.push(this.morph.endTag());
  },

  createElement: function() {
    var buffer = this.renderToBuffer();
    this.outerHTML = buffer.string();
    this.clearBuffer();
  },

  domManager: DOMManager
});

/**
  @class _MetamorphView
  @namespace Ember
  @extends Ember.View
  @uses Ember._Metamorph
  @private
*/
Ember._MetamorphView = Ember.View.extend(Ember._Metamorph);

/**
  @class _SimpleMetamorphView
  @namespace Ember
  @extends Ember.View
  @uses Ember._Metamorph
  @private
*/
Ember._SimpleMetamorphView = Ember.CoreView.extend(Ember._Metamorph);


})();



(function() {
/*globals Handlebars */

/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set, handlebarsGet = Ember.Handlebars.get;
Ember._SimpleHandlebarsView = Ember._SimpleMetamorphView.extend({
  instrumentName: 'render.simpleHandlebars',

  normalizedValue: Ember.computed(function() {
    var path = get(this, 'path'),
        pathRoot  = get(this, 'pathRoot'),
        result, templateData;

    // Use the pathRoot as the result if no path is provided. This
    // happens if the path is `this`, which gets normalized into
    // a `pathRoot` of the current Handlebars context and a path
    // of `''`.
    if (path === '') {
      result = pathRoot;
    } else {
      templateData = get(this, 'templateData');
      result = handlebarsGet(pathRoot, path, { data: templateData });
    }

    return result;
  }).property('path', 'pathRoot').volatile(),

  render: function(buffer) {
    // If not invoked via a triple-mustache ({{{foo}}}), escape
    // the content of the template.
    var escape = get(this, 'isEscaped');
    var result = get(this, 'normalizedValue');

    if (result === null || result === undefined) {
      result = "";
    } else if (!(result instanceof Handlebars.SafeString)) {
      result = String(result);
    }

    if (escape) { result = Handlebars.Utils.escapeExpression(result); }
    buffer.push(result);
    return;
  },

  rerender: function() {
    switch(this.state) {
      case 'preRender':
      case 'destroyed':
        break;
      case 'inBuffer':
        throw new Error("Something you did tried to replace an {{expression}} before it was inserted into the DOM.");
      case 'hasElement':
      case 'inDOM':
        this.domManager.replace(this);
        break;
    }

    return this;
  },

  transitionTo: function(state) {
    this.state = state;
  }
});

/**
  Ember._HandlebarsBoundView is a private view created by the Handlebars `{{bind}}`
  helpers that is used to keep track of bound properties.

  Every time a property is bound using a `{{mustache}}`, an anonymous subclass
  of Ember._HandlebarsBoundView is created with the appropriate sub-template and
  context set up. When the associated property changes, just the template for
  this view will re-render.

  @class _HandlebarsBoundView
  @namespace Ember
  @extends Ember._MetamorphView
  @private
*/
Ember._HandlebarsBoundView = Ember._MetamorphView.extend({
  instrumentName: 'render.boundHandlebars',

  /**
    The function used to determine if the `displayTemplate` or
    `inverseTemplate` should be rendered. This should be a function that takes
    a value and returns a Boolean.

    @property shouldDisplayFunc
    @type Function
    @default null
  */
  shouldDisplayFunc: null,

  /**
    Whether the template rendered by this view gets passed the context object
    of its parent template, or gets passed the value of retrieving `path`
    from the `pathRoot`.

    For example, this is true when using the `{{#if}}` helper, because the
    template inside the helper should look up properties relative to the same
    object as outside the block. This would be false when used with `{{#with
    foo}}` because the template should receive the object found by evaluating
    `foo`.

    @property preserveContext
    @type Boolean
    @default false
  */
  preserveContext: false,

  /**
    If `preserveContext` is true, this is the object that will be used
    to render the template.

    @property previousContext
    @type Object
  */
  previousContext: null,

  /**
    The template to render when `shouldDisplayFunc` evaluates to true.

    @property displayTemplate
    @type Function
    @default null
  */
  displayTemplate: null,

  /**
    The template to render when `shouldDisplayFunc` evaluates to false.

    @property inverseTemplate
    @type Function
    @default null
  */
  inverseTemplate: null,


  /**
    The path to look up on `pathRoot` that is passed to
    `shouldDisplayFunc` to determine which template to render.

    In addition, if `preserveContext` is false, the object at this path will
    be passed to the template when rendering.

    @property path
    @type String
    @default null
  */
  path: null,

  /**
    The object from which the `path` will be looked up. Sometimes this is the
    same as the `previousContext`, but in cases where this view has been generated
    for paths that start with a keyword such as `view` or `controller`, the
    path root will be that resolved object.

    @property pathRoot
    @type Object
  */
  pathRoot: null,

  normalizedValue: Ember.computed(function() {
    var path = get(this, 'path'),
        pathRoot  = get(this, 'pathRoot'),
        valueNormalizer = get(this, 'valueNormalizerFunc'),
        result, templateData;

    // Use the pathRoot as the result if no path is provided. This
    // happens if the path is `this`, which gets normalized into
    // a `pathRoot` of the current Handlebars context and a path
    // of `''`.
    if (path === '') {
      result = pathRoot;
    } else {
      templateData = get(this, 'templateData');
      result = handlebarsGet(pathRoot, path, { data: templateData });
    }

    return valueNormalizer ? valueNormalizer(result) : result;
  }).property('path', 'pathRoot', 'valueNormalizerFunc').volatile(),

  rerenderIfNeeded: function() {
    if (!get(this, 'isDestroyed') && get(this, 'normalizedValue') !== this._lastNormalizedValue) {
      this.rerender();
    }
  },

  /**
    Determines which template to invoke, sets up the correct state based on
    that logic, then invokes the default Ember.View `render` implementation.

    This method will first look up the `path` key on `pathRoot`,
    then pass that value to the `shouldDisplayFunc` function. If that returns
    true, the `displayTemplate` function will be rendered to DOM. Otherwise,
    `inverseTemplate`, if specified, will be rendered.

    For example, if this Ember._HandlebarsBoundView represented the `{{#with foo}}`
    helper, it would look up the `foo` property of its context, and
    `shouldDisplayFunc` would always return true. The object found by looking
    up `foo` would be passed to `displayTemplate`.

    @method render
    @param {Ember.RenderBuffer} buffer
  */
  render: function(buffer) {
    // If not invoked via a triple-mustache ({{{foo}}}), escape
    // the content of the template.
    var escape = get(this, 'isEscaped');

    var shouldDisplay = get(this, 'shouldDisplayFunc'),
        preserveContext = get(this, 'preserveContext'),
        context = get(this, 'previousContext');

    var inverseTemplate = get(this, 'inverseTemplate'),
        displayTemplate = get(this, 'displayTemplate');

    var result = get(this, 'normalizedValue');
    this._lastNormalizedValue = result;

    // First, test the conditional to see if we should
    // render the template or not.
    if (shouldDisplay(result)) {
      set(this, 'template', displayTemplate);

      // If we are preserving the context (for example, if this
      // is an #if block, call the template with the same object.
      if (preserveContext) {
        set(this, '_context', context);
      } else {
      // Otherwise, determine if this is a block bind or not.
      // If so, pass the specified object to the template
        if (displayTemplate) {
          set(this, '_context', result);
        } else {
        // This is not a bind block, just push the result of the
        // expression to the render context and return.
          if (result === null || result === undefined) {
            result = "";
          } else if (!(result instanceof Handlebars.SafeString)) {
            result = String(result);
          }

          if (escape) { result = Handlebars.Utils.escapeExpression(result); }
          buffer.push(result);
          return;
        }
      }
    } else if (inverseTemplate) {
      set(this, 'template', inverseTemplate);

      if (preserveContext) {
        set(this, '_context', context);
      } else {
        set(this, '_context', result);
      }
    } else {
      set(this, 'template', function() { return ''; });
    }

    return this._super(buffer);
  }
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set, fmt = Ember.String.fmt;
var handlebarsGet = Ember.Handlebars.get, normalizePath = Ember.Handlebars.normalizePath;
var forEach = Ember.ArrayPolyfills.forEach;

var EmberHandlebars = Ember.Handlebars, helpers = EmberHandlebars.helpers;

// Binds a property into the DOM. This will create a hook in DOM that the
// KVO system will look for and update if the property changes.
function bind(property, options, preserveContext, shouldDisplay, valueNormalizer) {
  var data = options.data,
      fn = options.fn,
      inverse = options.inverse,
      view = data.view,
      currentContext = this,
      pathRoot, path, normalized;

  normalized = normalizePath(currentContext, property, data);

  pathRoot = normalized.root;
  path = normalized.path;

  // Set up observers for observable objects
  if ('object' === typeof this) {
    // Create the view that will wrap the output of this template/property
    // and add it to the nearest view's childViews array.
    // See the documentation of Ember._HandlebarsBoundView for more.
    var bindView = view.createChildView(Ember._HandlebarsBoundView, {
      preserveContext: preserveContext,
      shouldDisplayFunc: shouldDisplay,
      valueNormalizerFunc: valueNormalizer,
      displayTemplate: fn,
      inverseTemplate: inverse,
      path: path,
      pathRoot: pathRoot,
      previousContext: currentContext,
      isEscaped: !options.hash.unescaped,
      templateData: options.data
    });

    view.appendChild(bindView);

    var observer = function() {
      Ember.run.scheduleOnce('render', bindView, 'rerenderIfNeeded');
    };

    // Observes the given property on the context and
    // tells the Ember._HandlebarsBoundView to re-render. If property
    // is an empty string, we are printing the current context
    // object ({{this}}) so updating it is not our responsibility.
    if (path !== '') {
      Ember.addObserver(pathRoot, path, observer);

      view.one('willClearRender', function() {
        Ember.removeObserver(pathRoot, path, observer);
      });
    }
  } else {
    // The object is not observable, so just render it out and
    // be done with it.
    data.buffer.push(handlebarsGet(pathRoot, path, options));
  }
}

function simpleBind(property, options) {
  var data = options.data,
      view = data.view,
      currentContext = this,
      pathRoot, path, normalized;

  normalized = normalizePath(currentContext, property, data);

  pathRoot = normalized.root;
  path = normalized.path;

  // Set up observers for observable objects
  if ('object' === typeof this) {
    var bindView = Ember._SimpleHandlebarsView.create().setProperties({
      path: path,
      pathRoot: pathRoot,
      isEscaped: !options.hash.unescaped,
      previousContext: currentContext,
      templateData: options.data
    });

    view.createChildView(bindView);
    view.appendChild(bindView);

    var observer = function() {
      Ember.run.scheduleOnce('render', bindView, 'rerender');
    };

    // Observes the given property on the context and
    // tells the Ember._HandlebarsBoundView to re-render. If property
    // is an empty string, we are printing the current context
    // object ({{this}}) so updating it is not our responsibility.
    if (path !== '') {
      Ember.addObserver(pathRoot, path, observer);

      view.one('willClearRender', function() {
        Ember.removeObserver(pathRoot, path, observer);
      });
    }
  } else {
    // The object is not observable, so just render it out and
    // be done with it.
    data.buffer.push(handlebarsGet(pathRoot, path, options));
  }
}

/**
  @private

  '_triageMustache' is used internally select between a binding and helper for
  the given context. Until this point, it would be hard to determine if the
  mustache is a property reference or a regular helper reference. This triage
  helper resolves that.

  This would not be typically invoked by directly.

  @method _triageMustache
  @for Ember.Handlebars.helpers
  @param {String} property Property/helperID to triage
  @param {Function} fn Context to provide for rendering
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('_triageMustache', function(property, fn) {
  Ember.assert("You cannot pass more than one argument to the _triageMustache helper", arguments.length <= 2);
  if (helpers[property]) {
    return helpers[property].call(this, fn);
  }
  else {
    return helpers.bind.apply(this, arguments);
  }
});

/**
  @private

  `bind` can be used to display a value, then update that value if it
  changes. For example, if you wanted to print the `title` property of
  `content`:

  ``` handlebars
  {{bind "content.title"}}
  ```

  This will return the `title` property as a string, then create a new
  observer at the specified path. If it changes, it will update the value in
  DOM. Note that if you need to support IE7 and IE8 you must modify the
  model objects properties using Ember.get() and Ember.set() for this to work as
  it relies on Ember's KVO system.  For all other browsers this will be handled
  for you automatically.

  @method bind
  @for Ember.Handlebars.helpers
  @param {String} property Property to bind
  @param {Function} fn Context to provide for rendering
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('bind', function(property, options) {
  Ember.assert("You cannot pass more than one argument to the bind helper", arguments.length <= 2);

  var context = (options.contexts && options.contexts[0]) || this;

  if (!options.fn) {
    return simpleBind.call(context, property, options);
  }

  return bind.call(context, property, options, false, function(result) {
    return !Ember.none(result);
  });
});

/**
  @private

  Use the `boundIf` helper to create a conditional that re-evaluates
  whenever the bound value changes.

  ``` handlebars
  {{#boundIf "content.shouldDisplayTitle"}}
    {{content.title}}
  {{/boundIf}}
  ```

  @method boundIf
  @for Ember.Handlebars.helpers
  @param {String} property Property to bind
  @param {Function} fn Context to provide for rendering
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('boundIf', function(property, fn) {
  var context = (fn.contexts && fn.contexts[0]) || this;
  var func = function(result) {
    if (Ember.typeOf(result) === 'array') {
      return get(result, 'length') !== 0;
    } else {
      return !!result;
    }
  };

  return bind.call(context, property, fn, true, func, func);
});

/**
  @method with
  @for Ember.Handlebars.helpers
  @param {Function} context
  @param {Hash} options
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('with', function(context, options) {
  if (arguments.length === 4) {
    var keywordName, path, rootPath, normalized;

    Ember.assert("If you pass more than one argument to the with helper, it must be in the form #with foo as bar", arguments[1] === "as");
    options = arguments[3];
    keywordName = arguments[2];
    path = arguments[0];

    Ember.assert("You must pass a block to the with helper", options.fn && options.fn !== Handlebars.VM.noop);

    if (Ember.isGlobalPath(path)) {
      Ember.bind(options.data.keywords, keywordName, path);
    } else {
      normalized = normalizePath(this, path, options.data);
      path = normalized.path;
      rootPath = normalized.root;

      // This is a workaround for the fact that you cannot bind separate objects
      // together. When we implement that functionality, we should use it here.
      var contextKey = Ember.$.expando + Ember.guidFor(rootPath);
      options.data.keywords[contextKey] = rootPath;

      // if the path is '' ("this"), just bind directly to the current context
      var contextPath = path ? contextKey + '.' + path : contextKey;
      Ember.bind(options.data.keywords, keywordName, contextPath);
    }

    return bind.call(this, path, options, true, function(result) {
      return !Ember.none(result);
    });
  } else {
    Ember.assert("You must pass exactly one argument to the with helper", arguments.length === 2);
    Ember.assert("You must pass a block to the with helper", options.fn && options.fn !== Handlebars.VM.noop);
    return helpers.bind.call(options.contexts[0], context, options);
  }
});


/**
  @method if
  @for Ember.Handlebars.helpers
  @param {Function} context
  @param {Hash} options
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('if', function(context, options) {
  Ember.assert("You must pass exactly one argument to the if helper", arguments.length === 2);
  Ember.assert("You must pass a block to the if helper", options.fn && options.fn !== Handlebars.VM.noop);

  return helpers.boundIf.call(options.contexts[0], context, options);
});

/**
  @method unless
  @for Ember.Handlebars.helpers
  @param {Function} context
  @param {Hash} options
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('unless', function(context, options) {
  Ember.assert("You must pass exactly one argument to the unless helper", arguments.length === 2);
  Ember.assert("You must pass a block to the unless helper", options.fn && options.fn !== Handlebars.VM.noop);

  var fn = options.fn, inverse = options.inverse;

  options.fn = inverse;
  options.inverse = fn;

  return helpers.boundIf.call(options.contexts[0], context, options);
});

/**
  `bindAttr` allows you to create a binding between DOM element attributes and
  Ember objects. For example:

  ``` handlebars
  <img {{bindAttr src="imageUrl" alt="imageTitle"}}>
  ```

  @method bindAttr
  @for Ember.Handlebars.helpers
  @param {Hash} options
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('bindAttr', function(options) {

  var attrs = options.hash;

  Ember.assert("You must specify at least one hash argument to bindAttr", !!Ember.keys(attrs).length);

  var view = options.data.view;
  var ret = [];
  var ctx = this;

  // Generate a unique id for this element. This will be added as a
  // data attribute to the element so it can be looked up when
  // the bound property changes.
  var dataId = ++Ember.uuid;

  // Handle classes differently, as we can bind multiple classes
  var classBindings = attrs['class'];
  if (classBindings !== null && classBindings !== undefined) {
    var classResults = EmberHandlebars.bindClasses(this, classBindings, view, dataId, options);
    ret.push('class="' + Handlebars.Utils.escapeExpression(classResults.join(' ')) + '"');
    delete attrs['class'];
  }

  var attrKeys = Ember.keys(attrs);

  // For each attribute passed, create an observer and emit the
  // current value of the property as an attribute.
  forEach.call(attrKeys, function(attr) {
    var path = attrs[attr],
        pathRoot, normalized;

    Ember.assert(fmt("You must provide a String for a bound attribute, not %@", [path]), typeof path === 'string');

    normalized = normalizePath(ctx, path, options.data);

    pathRoot = normalized.root;
    path = normalized.path;

    var value = (path === 'this') ? pathRoot : handlebarsGet(pathRoot, path, options),
        type = Ember.typeOf(value);

    Ember.assert(fmt("Attributes must be numbers, strings or booleans, not %@", [value]), value === null || value === undefined || type === 'number' || type === 'string' || type === 'boolean');

    var observer, invoker;

    observer = function observer() {
      var result = handlebarsGet(pathRoot, path, options);

      Ember.assert(fmt("Attributes must be numbers, strings or booleans, not %@", [result]), result === null || result === undefined || typeof result === 'number' || typeof result === 'string' || typeof result === 'boolean');

      var elem = view.$("[data-bindattr-" + dataId + "='" + dataId + "']");

      // If we aren't able to find the element, it means the element
      // to which we were bound has been removed from the view.
      // In that case, we can assume the template has been re-rendered
      // and we need to clean up the observer.
      if (!elem || elem.length === 0) {
        Ember.removeObserver(pathRoot, path, invoker);
        return;
      }

      Ember.View.applyAttributeBindings(elem, attr, result);
    };

    invoker = function() {
      Ember.run.scheduleOnce('render', observer);
    };

    // Add an observer to the view for when the property changes.
    // When the observer fires, find the element using the
    // unique data id and update the attribute to the new value.
    if (path !== 'this') {
      Ember.addObserver(pathRoot, path, invoker);

      view.one('willClearRender', function() {
        Ember.removeObserver(pathRoot, path, invoker);
      });
    }

    // if this changes, also change the logic in ember-views/lib/views/view.js
    if ((type === 'string' || (type === 'number' && !isNaN(value)))) {
      ret.push(attr + '="' + Handlebars.Utils.escapeExpression(value) + '"');
    } else if (value && type === 'boolean') {
      // The developer controls the attr name, so it should always be safe
      ret.push(attr + '="' + attr + '"');
    }
  }, this);

  // Add the unique identifier
  // NOTE: We use all lower-case since Firefox has problems with mixed case in SVG
  ret.push('data-bindattr-' + dataId + '="' + dataId + '"');
  return new EmberHandlebars.SafeString(ret.join(' '));
});

/**
  @private

  Helper that, given a space-separated string of property paths and a context,
  returns an array of class names. Calling this method also has the side
  effect of setting up observers at those property paths, such that if they
  change, the correct class name will be reapplied to the DOM element.

  For example, if you pass the string "fooBar", it will first look up the
  "fooBar" value of the context. If that value is true, it will add the
  "foo-bar" class to the current element (i.e., the dasherized form of
  "fooBar"). If the value is a string, it will add that string as the class.
  Otherwise, it will not add any new class name.

  @method bindClasses
  @for Ember.Handlebars
  @param {Ember.Object} context The context from which to lookup properties
  @param {String} classBindings A string, space-separated, of class bindings to use
  @param {Ember.View} view The view in which observers should look for the element to update
  @param {Srting} bindAttrId Optional bindAttr id used to lookup elements
  @return {Array} An array of class names to add
*/
EmberHandlebars.bindClasses = function(context, classBindings, view, bindAttrId, options) {
  var ret = [], newClass, value, elem;

  // Helper method to retrieve the property from the context and
  // determine which class string to return, based on whether it is
  // a Boolean or not.
  var classStringForPath = function(root, parsedPath, options) {
    var val,
        path = parsedPath.path;

    if (path === 'this') {
      val = root;
    } else if (path === '') {
      val = true;
    } else {
      val = handlebarsGet(root, path, options);
    }

    return Ember.View._classStringForValue(path, val, parsedPath.className, parsedPath.falsyClassName);
  };

  // For each property passed, loop through and setup
  // an observer.
  forEach.call(classBindings.split(' '), function(binding) {

    // Variable in which the old class value is saved. The observer function
    // closes over this variable, so it knows which string to remove when
    // the property changes.
    var oldClass;

    var observer, invoker;

    var parsedPath = Ember.View._parsePropertyPath(binding),
        path = parsedPath.path,
        pathRoot = context,
        normalized;

    if (path !== '' && path !== 'this') {
      normalized = normalizePath(context, path, options.data);

      pathRoot = normalized.root;
      path = normalized.path;
    }

    // Set up an observer on the context. If the property changes, toggle the
    // class name.
    observer = function() {
      // Get the current value of the property
      newClass = classStringForPath(pathRoot, parsedPath, options);
      elem = bindAttrId ? view.$("[data-bindattr-" + bindAttrId + "='" + bindAttrId + "']") : view.$();

      // If we can't find the element anymore, a parent template has been
      // re-rendered and we've been nuked. Remove the observer.
      if (!elem || elem.length === 0) {
        Ember.removeObserver(pathRoot, path, invoker);
      } else {
        // If we had previously added a class to the element, remove it.
        if (oldClass) {
          elem.removeClass(oldClass);
        }

        // If necessary, add a new class. Make sure we keep track of it so
        // it can be removed in the future.
        if (newClass) {
          elem.addClass(newClass);
          oldClass = newClass;
        } else {
          oldClass = null;
        }
      }
    };

    invoker = function() {
      Ember.run.scheduleOnce('render', observer);
    };

    if (path !== '' && path !== 'this') {
      Ember.addObserver(pathRoot, path, invoker);

      view.one('willClearRender', function() {
        Ember.removeObserver(pathRoot, path, invoker);
      });
    }

    // We've already setup the observer; now we just need to figure out the
    // correct behavior right now on the first pass through.
    value = classStringForPath(pathRoot, parsedPath, options);

    if (value) {
      ret.push(value);

      // Make sure we save the current value so that it can be removed if the
      // observer fires.
      oldClass = value;
    }
  });

  return ret;
};


})();



(function() {
/*globals Handlebars */

// TODO: Don't require the entire module
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set;
var PARENT_VIEW_PATH = /^parentView\./;
var EmberHandlebars = Ember.Handlebars;

EmberHandlebars.ViewHelper = Ember.Object.create({

  propertiesFromHTMLOptions: function(options, thisContext) {
    var hash = options.hash, data = options.data;
    var extensions = {},
        classes = hash['class'],
        dup = false;

    if (hash.id) {
      extensions.elementId = hash.id;
      dup = true;
    }

    if (classes) {
      classes = classes.split(' ');
      extensions.classNames = classes;
      dup = true;
    }

    if (hash.classBinding) {
      extensions.classNameBindings = hash.classBinding.split(' ');
      dup = true;
    }

    if (hash.classNameBindings) {
      if (extensions.classNameBindings === undefined) extensions.classNameBindings = [];
      extensions.classNameBindings = extensions.classNameBindings.concat(hash.classNameBindings.split(' '));
      dup = true;
    }

    if (hash.attributeBindings) {
      Ember.assert("Setting 'attributeBindings' via Handlebars is not allowed. Please subclass Ember.View and set it there instead.");
      extensions.attributeBindings = null;
      dup = true;
    }

    if (dup) {
      hash = Ember.$.extend({}, hash);
      delete hash.id;
      delete hash['class'];
      delete hash.classBinding;
    }

    // Set the proper context for all bindings passed to the helper. This applies to regular attribute bindings
    // as well as class name bindings. If the bindings are local, make them relative to the current context
    // instead of the view.
    var path;

    // Evaluate the context of regular attribute bindings:
    for (var prop in hash) {
      if (!hash.hasOwnProperty(prop)) { continue; }

      // Test if the property ends in "Binding"
      if (Ember.IS_BINDING.test(prop) && typeof hash[prop] === 'string') {
        path = this.contextualizeBindingPath(hash[prop], data);
        if (path) { hash[prop] = path; }
      }
    }

    // Evaluate the context of class name bindings:
    if (extensions.classNameBindings) {
      for (var b in extensions.classNameBindings) {
        var full = extensions.classNameBindings[b];
        if (typeof full === 'string') {
          // Contextualize the path of classNameBinding so this:
          //
          //     classNameBinding="isGreen:green"
          //
          // is converted to this:
          //
          //     classNameBinding="bindingContext.isGreen:green"
          var parsedPath = Ember.View._parsePropertyPath(full);
          path = this.contextualizeBindingPath(parsedPath.path, data);
          if (path) { extensions.classNameBindings[b] = path + parsedPath.classNames; }
        }
      }
    }

    // Make the current template context available to the view
    // for the bindings set up above.
    extensions.bindingContext = thisContext;

    return Ember.$.extend(hash, extensions);
  },

  // Transform bindings from the current context to a context that can be evaluated within the view.
  // Returns null if the path shouldn't be changed.
  //
  // TODO: consider the addition of a prefix that would allow this method to return `path`.
  contextualizeBindingPath: function(path, data) {
    var normalized = Ember.Handlebars.normalizePath(null, path, data);
    if (normalized.isKeyword) {
      return 'templateData.keywords.' + path;
    } else if (Ember.isGlobalPath(path)) {
      return null;
    } else if (path === 'this') {
      return 'bindingContext';
    } else {
      return 'bindingContext.' + path;
    }
  },

  helper: function(thisContext, path, options) {
    var inverse = options.inverse,
        data = options.data,
        view = data.view,
        fn = options.fn,
        hash = options.hash,
        newView;

    if ('string' === typeof path) {
      newView = EmberHandlebars.get(thisContext, path, options);
      Ember.assert("Unable to find view at path '" + path + "'", !!newView);
    } else {
      newView = path;
    }

    Ember.assert(Ember.String.fmt('You must pass a view class to the #view helper, not %@ (%@)', [path, newView]), Ember.View.detect(newView));

    var viewOptions = this.propertiesFromHTMLOptions(options, thisContext);
    var currentView = data.view;
    viewOptions.templateData = options.data;

    if (fn) {
      Ember.assert("You cannot provide a template block if you also specified a templateName", !get(viewOptions, 'templateName') && !get(newView.proto(), 'templateName'));
      viewOptions.template = fn;
    }

    // We only want to override the `_context` computed property if there is
    // no specified controller. See View#_context for more information.
    if (!newView.proto().controller && !newView.proto().controllerBinding && !viewOptions.controller && !viewOptions.controllerBinding) {
      viewOptions._context = thisContext;
    }

    currentView.appendChild(newView, viewOptions);
  }
});

/**
  `{{view}}` inserts a new instance of `Ember.View` into a template passing its options
  to the `Ember.View`'s `create` method and using the supplied block as the view's own template.

  An empty `<body>` and the following template:

  ``` handlebars
  <script type="text/x-handlebars">
    A span:
    {{#view tagName="span"}}
      hello.
    {{/view}}
  </script>
  ```

  Will result in HTML structure:

  ``` html
  <body>
    <!-- Note: the handlebars template script 
         also results in a rendered Ember.View
         which is the outer <div> here -->

    <div class="ember-view">
      A span:
      <span id="ember1" class="ember-view">
        Hello.
      </span>
    </div>
  </body>
  ```

  ### parentView setting

  The `parentView` property of the new `Ember.View` instance created through `{{view}}`
  will be set to the `Ember.View` instance of the template where `{{view}}` was called.

  ``` javascript
  aView = Ember.View.create({
    template: Ember.Handlebars.compile("{{#view}} my parent: {{parentView.elementId}} {{/view}}")
  });

  aView.appendTo('body');
  ```
    
  Will result in HTML structure:

  ``` html
  <div id="ember1" class="ember-view">
    <div id="ember2" class="ember-view">
      my parent: ember1
    </div>
  </div>
  ```

  ### Setting CSS id and class attributes

  The HTML `id` attribute can be set on the `{{view}}`'s resulting element with the `id` option.
  This option will _not_ be passed to `Ember.View.create`.

  ``` handlebars
  <script type="text/x-handlebars">
    {{#view tagName="span" id="a-custom-id"}}
      hello.
    {{/view}}
  </script>
  ```

  Results in the following HTML structure:

  ``` html
  <div class="ember-view">
    <span id="a-custom-id" class="ember-view">
      hello.
    </span>
  </div>
  ```

  The HTML `class` attribute can be set on the `{{view}}`'s resulting element with
  the `class` or `classNameBindings` options. The `class` option
  will directly set the CSS `class` attribute and will not be passed to
  `Ember.View.create`. `classNameBindings` will be passed to `create` and use
  `Ember.View`'s class name binding functionality:

  ``` handlebars
  <script type="text/x-handlebars">
    {{#view tagName="span" class="a-custom-class"}}
      hello.
    {{/view}}
  </script>
  ```

  Results in the following HTML structure:

  ``` html
  <div class="ember-view">
    <span id="ember2" class="ember-view a-custom-class">
      hello.
    </span>
  </div>
  ```

  ### Supplying a different view class

  `{{view}}` can take an optional first argument before its supplied options to specify a
  path to a custom view class.

  ``` handlebars
  <script type="text/x-handlebars">
    {{#view "MyApp.CustomView"}}
      hello.
    {{/view}}
  </script>
  ```

  The first argument can also be a relative path. Ember will search for the view class
  starting at the `Ember.View` of the template where `{{view}}` was used as the root object:

  ``` javascript
  MyApp = Ember.Application.create({});
  MyApp.OuterView = Ember.View.extend({
    innerViewClass: Ember.View.extend({
      classNames: ['a-custom-view-class-as-property']
    }),
    template: Ember.Handlebars.compile('{{#view "innerViewClass"}} hi {{/view}}')
  });

  MyApp.OuterView.create().appendTo('body');
  ```

  Will result in the following HTML:

  ``` html
  <div id="ember1" class="ember-view">
    <div id="ember2" class="ember-view a-custom-view-class-as-property"> 
      hi
    </div>
  </div>
  ```

  ### Blockless use

  If you supply a custom `Ember.View` subclass that specifies its own template
  or provide a `templateName` option to `{{view}}` it can be used without supplying a block.
  Attempts to use both a `templateName` option and supply a block will throw an error.

  ``` handlebars
  <script type="text/x-handlebars">
    {{view "MyApp.ViewWithATemplateDefined"}}
  </script>
  ```

  ### viewName property

  You can supply a `viewName` option to `{{view}}`. The `Ember.View` instance will
  be referenced as a property of its parent view by this name.

  ``` javascript
  aView = Ember.View.create({
    template: Ember.Handlebars.compile('{{#view viewName="aChildByName"}} hi {{/view}}')
  });

  aView.appendTo('body');
  aView.get('aChildByName') // the instance of Ember.View created by {{view}} helper
  ```

  @method view
  @for Ember.Handlebars.helpers
  @param {String} path
  @param {Hash} options
  @return {String} HTML string
*/
EmberHandlebars.registerHelper('view', function(path, options) {
  Ember.assert("The view helper only takes a single argument", arguments.length <= 2);

  // If no path is provided, treat path param as options.
  if (path && path.data && path.data.isRenderData) {
    options = path;
    path = "Ember.View";
  }

  return EmberHandlebars.ViewHelper.helper(this, path, options);
});


})();



(function() {
/*globals Handlebars */

// TODO: Don't require all of this module
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, handlebarsGet = Ember.Handlebars.get, fmt = Ember.String.fmt;

/**
  `{{collection}}` is a `Ember.Handlebars` helper for adding instances of
  `Ember.CollectionView` to a template.  See `Ember.CollectionView` for additional
  information on how a `CollectionView` functions.

  `{{collection}}`'s primary use is as a block helper with a `contentBinding` option
  pointing towards an `Ember.Array`-compatible object.  An `Ember.View` instance will
  be created for each item in its `content` property. Each view will have its own
  `content` property set to the appropriate item in the collection.

  The provided block will be applied as the template for each item's view.

  Given an empty `<body>` the following template:

  ``` handlebars
  <script type="text/x-handlebars">
    {{#collection contentBinding="App.items"}}
      Hi {{view.content.name}}
    {{/collection}}
  </script>
  ```

  And the following application code

  ``` javascript
  App = Ember.Application.create()
  App.items = [
    Ember.Object.create({name: 'Dave'}),
    Ember.Object.create({name: 'Mary'}),
    Ember.Object.create({name: 'Sara'})
  ]
  ```

  Will result in the HTML structure below

  ``` html
  <div class="ember-view">
    <div class="ember-view">Hi Dave</div>
    <div class="ember-view">Hi Mary</div>
    <div class="ember-view">Hi Sara</div>
  </div>
  ```

  ### Blockless Use
  If you provide an `itemViewClass` option that has its own `template` you can omit
  the block.

  The following template:

  ``` handlebars
  <script type="text/x-handlebars">
    {{collection contentBinding="App.items" itemViewClass="App.AnItemView"}}
  </script>
  ```

  And application code

  ``` javascript
  App = Ember.Application.create();
  App.items = [
    Ember.Object.create({name: 'Dave'}),
    Ember.Object.create({name: 'Mary'}),
    Ember.Object.create({name: 'Sara'})
  ];

  App.AnItemView = Ember.View.extend({
    template: Ember.Handlebars.compile("Greetings {{view.content.name}}")
  });
  ```

  Will result in the HTML structure below

  ``` html
  <div class="ember-view">
    <div class="ember-view">Greetings Dave</div>
    <div class="ember-view">Greetings Mary</div>
    <div class="ember-view">Greetings Sara</div>
  </div>
  ```

  ### Specifying a CollectionView subclass

  By default the `{{collection}}` helper will create an instance of `Ember.CollectionView`.
  You can supply a `Ember.CollectionView` subclass to the helper by passing it
  as the first argument:

  ``` handlebars
  <script type="text/x-handlebars">
    {{#collection App.MyCustomCollectionClass contentBinding="App.items"}}
      Hi {{view.content.name}}
    {{/collection}}
  </script>
  ```


  ### Forwarded `item.*`-named Options

  As with the `{{view}}`, helper options passed to the `{{collection}}` will be set on
  the resulting `Ember.CollectionView` as properties. Additionally, options prefixed with
  `item` will be applied to the views rendered for each item (note the camelcasing):

  ``` handlebars
  <script type="text/x-handlebars">
    {{#collection contentBinding="App.items"
                  itemTagName="p"
                  itemClassNames="greeting"}}
      Howdy {{view.content.name}}
    {{/collection}}
  </script>
  ```

  Will result in the following HTML structure:

  ``` html
  <div class="ember-view">
    <p class="ember-view greeting">Howdy Dave</p>
    <p class="ember-view greeting">Howdy Mary</p>
    <p class="ember-view greeting">Howdy Sara</p>
  </div>
  ```

  @method collection
  @for Ember.Handlebars.helpers
  @param {String} path
  @param {Hash} options
  @return {String} HTML string
  @deprecated Use `{{each}}` helper instead.
*/
Ember.Handlebars.registerHelper('collection', function(path, options) {
  Ember.deprecate("Using the {{collection}} helper without specifying a class has been deprecated as the {{each}} helper now supports the same functionality.", path !== 'collection');

  // If no path is provided, treat path param as options.
  if (path && path.data && path.data.isRenderData) {
    options = path;
    path = undefined;
    Ember.assert("You cannot pass more than one argument to the collection helper", arguments.length === 1);
  } else {
    Ember.assert("You cannot pass more than one argument to the collection helper", arguments.length === 2);
  }

  var fn = options.fn;
  var data = options.data;
  var inverse = options.inverse;

  // If passed a path string, convert that into an object.
  // Otherwise, just default to the standard class.
  var collectionClass;
  collectionClass = path ? handlebarsGet(this, path, options) : Ember.CollectionView;
  Ember.assert(fmt("%@ #collection: Could not find collection class %@", [data.view, path]), !!collectionClass);

  var hash = options.hash, itemHash = {}, match;

  // Extract item view class if provided else default to the standard class
  var itemViewClass, itemViewPath = hash.itemViewClass;
  var collectionPrototype = collectionClass.proto();
  delete hash.itemViewClass;
  itemViewClass = itemViewPath ? handlebarsGet(collectionPrototype, itemViewPath, options) : collectionPrototype.itemViewClass;
  Ember.assert(fmt("%@ #collection: Could not find itemViewClass %@", [data.view, itemViewPath]), !!itemViewClass);

  // Go through options passed to the {{collection}} helper and extract options
  // that configure item views instead of the collection itself.
  for (var prop in hash) {
    if (hash.hasOwnProperty(prop)) {
      match = prop.match(/^item(.)(.*)$/);

      if(match) {
        // Convert itemShouldFoo -> shouldFoo
        itemHash[match[1].toLowerCase() + match[2]] = hash[prop];
        // Delete from hash as this will end up getting passed to the
        // {{view}} helper method.
        delete hash[prop];
      }
    }
  }

  var tagName = hash.tagName || collectionPrototype.tagName;

  if (fn) {
    itemHash.template = fn;
    delete options.fn;
  }

  var emptyViewClass;
  if (inverse && inverse !== Handlebars.VM.noop) {
    emptyViewClass = get(collectionPrototype, 'emptyViewClass');
    emptyViewClass = emptyViewClass.extend({
          template: inverse,
          tagName: itemHash.tagName
    });
  } else if (hash.emptyViewClass) {
    emptyViewClass = handlebarsGet(this, hash.emptyViewClass, options);
  }
  hash.emptyView = emptyViewClass;

  if (hash.eachHelper === 'each') {
    itemHash._context = Ember.computed(function() {
      return get(this, 'content');
    }).property('content');
    delete hash.eachHelper;
  }

  var viewOptions = Ember.Handlebars.ViewHelper.propertiesFromHTMLOptions({ data: data, hash: itemHash }, this);
  hash.itemViewClass = itemViewClass.extend(viewOptions);

  return Ember.Handlebars.helpers.view.call(this, collectionClass, options);
});


})();



(function() {
/*globals Handlebars */
/**
@module ember
@submodule ember-handlebars
*/

var handlebarsGet = Ember.Handlebars.get;

/**
  `unbound` allows you to output a property without binding. *Important:* The
  output will not be updated if the property changes. Use with caution.

  ``` handlebars
  <div>{{unbound somePropertyThatDoesntChange}}</div>
  ```

  @method unbound
  @for Ember.Handlebars.helpers
  @param {String} property
  @return {String} HTML string
*/
Ember.Handlebars.registerHelper('unbound', function(property, fn) {
  var context = (fn.contexts && fn.contexts[0]) || this;
  return handlebarsGet(context, property, fn);
});

})();



(function() {
/*jshint debug:true*/
/**
@module ember
@submodule ember-handlebars
*/

var handlebarsGet = Ember.Handlebars.get, normalizePath = Ember.Handlebars.normalizePath;

/**
  `log` allows you to output the value of a value in the current rendering
  context.

  ``` handlebars
  {{log myVariable}}
  ```

  @method log
  @for Ember.Handlebars.helpers
  @param {String} property
*/
Ember.Handlebars.registerHelper('log', function(property, options) {
  var context = (options.contexts && options.contexts[0]) || this,
      normalized = normalizePath(context, property, options.data),
      pathRoot = normalized.root,
      path = normalized.path,
      value = (path === 'this') ? pathRoot : handlebarsGet(pathRoot, path, options);
  Ember.Logger.log(value);
});

/**
  The `debugger` helper executes the `debugger` statement in the current
  context.

  ``` handlebars
  {{debugger}}
  ```

  @method debugger
  @for Ember.Handlebars.helpers
  @param {String} property
*/
Ember.Handlebars.registerHelper('debugger', function() {
  debugger;
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set;

Ember.Handlebars.EachView = Ember.CollectionView.extend(Ember._Metamorph, {
  itemViewClass: Ember._MetamorphView,
  emptyViewClass: Ember._MetamorphView,

  createChildView: function(view, attrs) {
    view = this._super(view, attrs);

    // At the moment, if a container view subclass wants
    // to insert keywords, it is responsible for cloning
    // the keywords hash. This will be fixed momentarily.
    var keyword = get(this, 'keyword');

    if (keyword) {
      var data = get(view, 'templateData');

      data = Ember.copy(data);
      data.keywords = view.cloneKeywords();
      set(view, 'templateData', data);

      var content = get(view, 'content');

      // In this case, we do not bind, because the `content` of
      // a #each item cannot change.
      data.keywords[keyword] = content;
    }

    return view;
  }
});

/**
  The `{{#each}}` helper loops over elements in a collection, rendering its block once for each item:

  ``` javascript
  Developers = [{name: 'Yehuda'},{name: 'Tom'}, {name: 'Paul'}];
  ```

  ``` handlebars
  {{#each Developers}}
    {{name}}
  {{/each}}
  ```

  `{{each}}` supports an alternative syntax with element naming:

  ``` handlebars
  {{#each person in Developers}}
    {{person.name}}
  {{/each}}
  ```

  When looping over objects that do not have properties, `{{this}}` can be used to render the object:

  ``` javascript
  DeveloperNames = ['Yehuda', 'Tom', 'Paul']
  ```

  ``` handlebars
  {{#each DeveloperNames}}
    {{this}}
  {{/each}}
  ```

  ### Blockless Use

  If you provide an `itemViewClass` option that has its own `template` you can omit
  the block in a similar way to how it can be done with the collection helper.

  The following template:

  ``` handlebars
  <script type="text/x-handlebars">
    {{#view App.MyView }}
      {{each view.items itemViewClass="App.AnItemView"}} 
    {{/view}}
  </script>
  ```

  And application code

  ``` javascript
  App = Ember.Application.create({
    MyView: Ember.View.extend({
      items: [
        Ember.Object.create({name: 'Dave'}),
        Ember.Object.create({name: 'Mary'}),
        Ember.Object.create({name: 'Sara'})
      ]
    })
  });

  App.AnItemView = Ember.View.extend({
    template: Ember.Handlebars.compile("Greetings {{name}}")
  });
      
  App.initialize();
  ```
      
  Will result in the HTML structure below

  ``` html
  <div class="ember-view">
    <div class="ember-view">Greetings Dave</div>
    <div class="ember-view">Greetings Mary</div>
    <div class="ember-view">Greetings Sara</div>
  </div>
  ```


  @method each
  @for Ember.Handlebars.helpers
  @param [name] {String} name for item (used with `in`)
  @param path {String} path
*/
Ember.Handlebars.registerHelper('each', function(path, options) {
  if (arguments.length === 4) {
    Ember.assert("If you pass more than one argument to the each helper, it must be in the form #each foo in bar", arguments[1] === "in");

    var keywordName = arguments[0];

    options = arguments[3];
    path = arguments[2];
    if (path === '') { path = "this"; }

    options.hash.keyword = keywordName;
  } else {
    options.hash.eachHelper = 'each';
  }

  options.hash.contentBinding = path;
  // Set up emptyView as a metamorph with no tag
  //options.hash.emptyViewClass = Ember._MetamorphView;

  return Ember.Handlebars.helpers.collection.call(this, 'Ember.Handlebars.EachView', options);
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

/**
  `template` allows you to render a template from inside another template.
  This allows you to re-use the same template in multiple places. For example:

  ``` handlebars
  <script type="text/x-handlebars">
    {{#with loggedInUser}}
      Last Login: {{lastLogin}}
      User Info: {{template "user_info"}}
    {{/with}}
  </script>

  <script type="text/x-handlebars" data-template-name="user_info">
    Name: <em>{{name}}</em>
    Karma: <em>{{karma}}</em>
  </script>
  ```

  This helper looks for templates in the global Ember.TEMPLATES hash. If you
  add &lt;script&gt; tags to your page with the `data-template-name` attribute set,
  they will be compiled and placed in this hash automatically.

  You can also manually register templates by adding them to the hash:

  ``` javascript
  Ember.TEMPLATES["my_cool_template"] = Ember.Handlebars.compile('<b>{{user}}</b>');
  ```

  @method template
  @for Ember.Handlebars.helpers
  @param {String} templateName the template to render
*/

Ember.Handlebars.registerHelper('template', function(name, options) {
  var template = Ember.TEMPLATES[name];

  Ember.assert("Unable to find template with name '"+name+"'.", !!template);

  Ember.TEMPLATES[name](this, { data: options.data });
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var EmberHandlebars = Ember.Handlebars,
    handlebarsGet = EmberHandlebars.get,
    get = Ember.get,
    a_slice = Array.prototype.slice;

var ActionHelper = EmberHandlebars.ActionHelper = {
  registeredActions: {}
};

ActionHelper.registerAction = function(actionName, options) {
  var actionId = (++Ember.uuid).toString();

  ActionHelper.registeredActions[actionId] = {
    eventName: options.eventName,
    handler: function(event) {
      var modifier = event.shiftKey || event.metaKey || event.altKey || event.ctrlKey,
          secondaryClick = event.which > 1, // IE9 may return undefined
          nonStandard = modifier || secondaryClick;

      if (options.link && nonStandard) {
        // Allow the browser to handle special link clicks normally
        return;
      }

      event.preventDefault();

      event.view = options.view;

      if (options.hasOwnProperty('context')) {
        event.context = options.context;
      }

      if (options.hasOwnProperty('contexts')) {
        event.contexts = options.contexts;
      }

      var target = options.target;

      // Check for StateManager (or compatible object)
      if (target.isState && typeof target.send === 'function') {
        return target.send(actionName, event);
      } else {
        Ember.assert(Ember.String.fmt('Target %@ does not have action %@', [target, actionName]), target[actionName]);
        return target[actionName].call(target, event);
      }
    }
  };

  options.view.on('willClearRender', function() {
    delete ActionHelper.registeredActions[actionId];
  });

  return actionId;
};

/**
  The `{{action}}` helper registers an HTML element within a template for
  DOM event handling and forwards that interaction to the view's `controller.target`
  or supplied `target` option (see 'Specifying a Target'). By default the
  `controller.target` is set to the Application's router.

  User interaction with that element will invoke the supplied action name on
  the appropriate target.

  Given the following Handlebars template on the page

  ``` handlebars
  <script type="text/x-handlebars" data-template-name='a-template'>
    <div {{action anActionName target="view"}}>
      click me
    </div>
  </script>
  ```

  And application code

  ``` javascript
  AView = Ember.View.extend({
    templateName: 'a-template',
    anActionName: function(event){}
  });

  aView = AView.create();
  aView.appendTo('body');
  ```

  Will results in the following rendered HTML

  ``` html
  <div class="ember-view">
    <div data-ember-action="1">
      click me
    </div>
  </div>
  ```

  Clicking "click me" will trigger the `anActionName` method of the `aView`
  object with a  `jQuery.Event` object as its argument. The `jQuery.Event`
  object will be extended to include a `view` property that is set to the
  original view interacted with (in this case the `aView` object).

  ### Event Propagation

  Events triggered through the action helper will automatically have
  `.preventDefault()` called on them. You do not need to do so in your event
  handlers. To stop propagation of the event, simply return `false` from your
  handler.

  If you need the default handler to trigger you should either register your
  own event handler, or use event methods on your view class. See Ember.View
  'Responding to Browser Events' for more information.

  ### Specifying DOM event type

  By default the `{{action}}` helper registers for DOM `click` events. You can
  supply an `on` option to the helper to specify a different DOM event name:

  ``` handlebars
  <script type="text/x-handlebars" data-template-name='a-template'>
    <div {{action anActionName on="doubleClick"}}>
      click me
    </div>
  </script>
  ```

  See Ember.View 'Responding to Browser Events' for a list of
  acceptable DOM event names.

  Because `{{action}}` depends on Ember's event dispatch system it will only
  function if an `Ember.EventDispatcher` instance is available. An
  `Ember.EventDispatcher` instance will be created when a new
  `Ember.Application` is created. Having an instance of `Ember.Application`
  will satisfy this requirement.


  ### Specifying a Target

  There are several possible target objects for `{{action}}` helpers:

  In a typical `Ember.Router`-backed Application where views are managed
  through use of the `{{outlet}}` helper, actions will be forwarded to the
  current state of the Applications's Router. See Ember.Router 'Responding
  to User-initiated Events' for more information.

  If you manually set the `target` property on the controller of a template's
  `Ember.View` instance, the specifed `controller.target` will become the target
  for any actions. Likely custom values for a controller's `target` are the
  controller itself or a StateManager other than the Application's Router.

  If the templates's view lacks a controller property the view itself is the target.

  Finally, a `target` option can be provided to the helper to change which object
  will receive the method call. This option must be a string representing a
  path to an object:

  ``` handlebars
  <script type="text/x-handlebars" data-template-name='a-template'>
    <div {{action anActionName target="MyApplication.someObject"}}>
      click me
    </div>
  </script>
  ```

  Clicking "click me" in the rendered HTML of the above template will trigger
  the  `anActionName` method of the object at `MyApplication.someObject`.
  The first argument to this method will be a `jQuery.Event` extended to
  include a `view` property that is set to the original view interacted with.

  A path relative to the template's `Ember.View` instance can also be used as
  a target:

  ``` handlebars
  <script type="text/x-handlebars" data-template-name='a-template'>
    <div {{action anActionName target="parentView"}}>
      click me
    </div>
  </script>
  ```

  Clicking "click me" in the rendered HTML of the above template will trigger
  the `anActionName` method of the view's parent view.

  The `{{action}}` helper is `Ember.StateManager` aware. If the target of the
  action is an `Ember.StateManager` instance `{{action}}` will use the `send`
  functionality of StateManagers. The documentation for `Ember.StateManager`
  has additional information about this use.

  If an action's target does not implement a method that matches the supplied
  action name an error will be thrown.

  ``` handlebars
  <script type="text/x-handlebars" data-template-name='a-template'>
    <div {{action aMethodNameThatIsMissing}}>
      click me
    </div>
  </script>
  ```

  With the following application code

  ``` javascript
  AView = Ember.View.extend({
    templateName; 'a-template',
    // note: no method 'aMethodNameThatIsMissing'
    anActionName: function(event){}
  });

  aView = AView.create();
  aView.appendTo('body');
  ```

  Will throw `Uncaught TypeError: Cannot call method 'call' of undefined` when
  "click me" is clicked.

  ### Specifying a context

  You may optionally specify objects to pass as contexts to the `{{action}}` helper
  by providing property paths as the subsequent parameters. These objects are made
  available as the `contexts` (also `context` if there is only one) properties in the
  `jQuery.Event` object:

  ``` handlebars
  <script type="text/x-handlebars" data-template-name='a-template'>
    {{#each person in people}}
      <div {{action edit person}}>
        click me
      </div>
    {{/each}}
  </script>
  ```

  Clicking "click me" will trigger the `edit` method of the view's context with a
  `jQuery.Event` object containing the person object as its context.

  @method action
  @for Ember.Handlebars.helpers
  @param {String} actionName
  @param {Object...} contexts
  @param {Hash} options
*/
EmberHandlebars.registerHelper('action', function(actionName) {
  var options = arguments[arguments.length - 1],
      contexts = a_slice.call(arguments, 1, -1);

  var hash = options.hash,
      view = options.data.view,
      target, controller, link;

  // create a hash to pass along to registerAction
  var action = {
    eventName: hash.on || "click"
  };

  action.view = view = get(view, 'concreteView');

  if (hash.target) {
    target = handlebarsGet(this, hash.target, options);
  } else if (controller = options.data.keywords.controller) {
    target = get(controller, 'target');
  }

  action.target = target = target || view;

  if (contexts.length) {
    action.contexts = contexts = Ember.EnumerableUtils.map(contexts, function(context) {
      return handlebarsGet(this, context, options);
    }, this);
    action.context = contexts[0];
  }

  var output = [], url;

  if (hash.href && target.urlForEvent) {
    url = target.urlForEvent.apply(target, [actionName].concat(contexts));
    output.push('href="' + url + '"');
    action.link = true;
  }

  var actionId = ActionHelper.registerAction(actionName, action);
  output.push('data-ember-action="' + actionId + '"');

  return new EmberHandlebars.SafeString(output.join(" "));
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set;

/**

  When used in a Handlebars template that is assigned to an `Ember.View` instance's
  `layout` property Ember will render the layout template first, inserting the view's
  own rendered output at the `{{ yield }}` location.

  An empty `<body>` and the following application code:

  ``` javascript
  AView = Ember.View.extend({
    classNames: ['a-view-with-layout'],
    layout: Ember.Handlebars.compile('<div class="wrapper">{{ yield }}</div>'),
    template: Ember.Handlebars.compile('<span>I am wrapped</span>')
  });

  aView = AView.create();
  aView.appendTo('body');
  ```

  Will result in the following HTML output:

  ``` html
  <body>
    <div class='ember-view a-view-with-layout'>
      <div class="wrapper">
        <span>I am wrapped</span>
      </div>
    </div>
  </body>
  ```

  The yield helper cannot be used outside of a template assigned to an `Ember.View`'s `layout` property
  and will throw an error if attempted.

  ``` javascript
  BView = Ember.View.extend({
    classNames: ['a-view-with-layout'],
    template: Ember.Handlebars.compile('{{yield}}')
  });

  bView = BView.create();
  bView.appendTo('body');

  // throws
  // Uncaught Error: assertion failed: You called yield in a template that was not a layout
  ```

  @method yield
  @for Ember.Handlebars.helpers
  @param {Hash} options
  @return {String} HTML string
*/
Ember.Handlebars.registerHelper('yield', function(options) {
  var view = options.data.view, template;

  while (view && !get(view, 'layout')) {
    view = get(view, 'parentView');
  }

  Ember.assert("You called yield in a template that was not a layout", !!view);

  template = get(view, 'template');

  if (template) { template(this, options); }
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

Ember.Handlebars.OutletView = Ember.ContainerView.extend(Ember._Metamorph);

/**
  The `outlet` helper allows you to specify that the current
  view's controller will fill in the view for a given area.

  ``` handlebars
  {{outlet}}
  ```

  By default, when the the current controller's `view` property changes, the
  outlet will replace its current view with the new view. You can set the
  `view` property directly, but it's normally best to use `connectOutlet`.

  ``` javascript
  # Instantiate App.PostsView and assign to `view`, so as to render into outlet.
  controller.connectOutlet('posts');
  ```

  You can also specify a particular name other than `view`:

  ``` handlebars
  {{outlet masterView}}
  {{outlet detailView}}
  ```

  Then, you can control several outlets from a single controller.

  ``` javascript
  # Instantiate App.PostsView and assign to controller.masterView.
  controller.connectOutlet('masterView', 'posts');
  # Also, instantiate App.PostInfoView and assign to controller.detailView.
  controller.connectOutlet('detailView', 'postInfo');
  ```

  @method outlet
  @for Ember.Handlebars.helpers
  @param {String} property the property on the controller
    that holds the view for this outlet
*/
Ember.Handlebars.registerHelper('outlet', function(property, options) {
  if (property && property.data && property.data.isRenderData) {
    options = property;
    property = 'view';
  }

  options.hash.currentViewBinding = "view.context." + property;

  return Ember.Handlebars.helpers.view.call(this, Ember.Handlebars.OutletView, options);
});

})();



(function() {

})();



(function() {

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var set = Ember.set, get = Ember.get;

/**
  The `Ember.Checkbox` view class renders a checkbox [input](https://developer.mozilla.org/en/HTML/Element/Input) 
  element. It allows for binding an Ember property (`checked`) to the status of the checkbox.

  Example:

  ``` handlebars
  {{view Ember.Checkbox checkedBinding="receiveEmail"}}
  ```

  You can add a `label` tag yourself in the template where the Ember.Checkbox is being used.

  ``` html
  <label>        
    {{view Ember.Checkbox classNames="applicaton-specific-checkbox"}}
    Some Title
  </label>
  ```


  The `checked` attribute of an Ember.Checkbox object should always be set
  through the Ember object or by interacting with its rendered element representation
  via the mouse, keyboard, or touch.  Updating the value of the checkbox via jQuery will
  result in the checked value of the object and its element losing synchronization.

  ## Layout and LayoutName properties
  Because HTML `input` elements are self closing `layout` and `layoutName` properties will
  not be applied. See `Ember.View`'s layout section for more information.

  @class Checkbox
  @namespace Ember
  @extends Ember.View
*/
Ember.Checkbox = Ember.View.extend({
  classNames: ['ember-checkbox'],

  tagName: 'input',

  attributeBindings: ['type', 'checked', 'disabled', 'tabindex'],

  type: "checkbox",
  checked: false,
  disabled: false,

  init: function() {
    this._super();
    this.on("change", this, this._updateElementValue);
  },

  _updateElementValue: function() {
    set(this, 'checked', this.$().prop('checked'));
  }
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set;

/**
  Shared mixin used by Ember.TextField and Ember.TextArea.

  @class TextSupport
  @namespace Ember
  @extends Ember.Mixin
  @private
*/
Ember.TextSupport = Ember.Mixin.create({
  value: "",

  attributeBindings: ['placeholder', 'disabled', 'maxlength', 'tabindex'],
  placeholder: null,
  disabled: false,
  maxlength: null,

  insertNewline: Ember.K,
  cancel: Ember.K,

  init: function() {
    this._super();
    this.on("focusOut", this, this._elementValueDidChange);
    this.on("change", this, this._elementValueDidChange);
    this.on("keyUp", this, this.interpretKeyEvents);
  },

  interpretKeyEvents: function(event) {
    var map = Ember.TextSupport.KEY_EVENTS;
    var method = map[event.keyCode];

    this._elementValueDidChange();
    if (method) { return this[method](event); }
  },

  _elementValueDidChange: function() {
    set(this, 'value', this.$().val());
  }

});

Ember.TextSupport.KEY_EVENTS = {
  13: 'insertNewline',
  27: 'cancel'
};

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set;

/**
  The `Ember.TextField` view class renders a text
  [input](https://developer.mozilla.org/en/HTML/Element/Input) element. It
  allows for binding Ember properties to the text field contents (`value`),
  live-updating as the user inputs text.

  Example:

  ``` handlebars
  {{view Ember.TextField valueBinding="firstName"}}
  ```

  ## Layout and LayoutName properties
  Because HTML `input` elements are self closing `layout` and `layoutName` properties will
  not be applied. See `Ember.View`'s layout section for more information.

  ## HTML Attributes

  By default `Ember.TextField` provides support for `type`, `value`, `size`, `placeholder`,
  `disabled`, `maxlength` and `tabindex` attributes on a textarea. If you need to support
  more attributes have a look at the `attributeBindings` property in `Ember.View`'s
  HTML Attributes section.

  To globally add support for additional attributes you can reopen `Ember.TextField` or
  `Ember.TextSupport`.

  ``` javascript
  Ember.TextSupport.reopen({
    attributeBindings: ["required"]
  })
  ```

  @class TextField
  @namespace Ember
  @extends Ember.View
  @uses Ember.TextSupport
*/
Ember.TextField = Ember.View.extend(Ember.TextSupport,
  /** @scope Ember.TextField.prototype */ {

  classNames: ['ember-text-field'],
  tagName: "input",
  attributeBindings: ['type', 'value', 'size'],

  /**
    The value attribute of the input element. As the user inputs text, this
    property is updated live.

    @property value
    @type String
    @default ""
  */
  value: "",

  /**
    The type attribute of the input element.

    @property type
    @type String
    @default "text"
  */
  type: "text",

  /**
    The size of the text field in characters.

    @property size
    @type String
    @default null
  */
  size: null
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set;

/**
  @class Button
  @namespace Ember
  @extends Ember.View
  @uses Ember.TargetActionSupport
  @deprecated
*/
Ember.Button = Ember.View.extend(Ember.TargetActionSupport, {
  classNames: ['ember-button'],
  classNameBindings: ['isActive'],

  tagName: 'button',

  propagateEvents: false,

  attributeBindings: ['type', 'disabled', 'href', 'tabindex'],

  /**
    @private

    Overrides TargetActionSupport's targetObject computed
    property to use Handlebars-specific path resolution.

    @property targetObject
  */
  targetObject: Ember.computed(function() {
    var target = get(this, 'target'),
        root = get(this, 'context'),
        data = get(this, 'templateData');

    if (typeof target !== 'string') { return target; }

    return Ember.Handlebars.get(root, target, { data: data });
  }).property('target'),

  // Defaults to 'button' if tagName is 'input' or 'button'
  type: Ember.computed(function(key, value) {
    var tagName = this.get('tagName');
    if (value !== undefined) { this._type = value; }
    if (this._type !== undefined) { return this._type; }
    if (tagName === 'input' || tagName === 'button') { return 'button'; }
  }).property('tagName'),

  disabled: false,

  // Allow 'a' tags to act like buttons
  href: Ember.computed(function() {
    return this.get('tagName') === 'a' ? '#' : null;
  }).property('tagName'),

  mouseDown: function() {
    if (!get(this, 'disabled')) {
      set(this, 'isActive', true);
      this._mouseDown = true;
      this._mouseEntered = true;
    }
    return get(this, 'propagateEvents');
  },

  mouseLeave: function() {
    if (this._mouseDown) {
      set(this, 'isActive', false);
      this._mouseEntered = false;
    }
  },

  mouseEnter: function() {
    if (this._mouseDown) {
      set(this, 'isActive', true);
      this._mouseEntered = true;
    }
  },

  mouseUp: function(event) {
    if (get(this, 'isActive')) {
      // Actually invoke the button's target and action.
      // This method comes from the Ember.TargetActionSupport mixin.
      this.triggerAction();
      set(this, 'isActive', false);
    }

    this._mouseDown = false;
    this._mouseEntered = false;
    return get(this, 'propagateEvents');
  },

  keyDown: function(event) {
    // Handle space or enter
    if (event.keyCode === 13 || event.keyCode === 32) {
      this.mouseDown();
    }
  },

  keyUp: function(event) {
    // Handle space or enter
    if (event.keyCode === 13 || event.keyCode === 32) {
      this.mouseUp();
    }
  },

  // TODO: Handle proper touch behavior.  Including should make inactive when
  // finger moves more than 20x outside of the edge of the button (vs mouse
  // which goes inactive as soon as mouse goes out of edges.)

  touchStart: function(touch) {
    return this.mouseDown(touch);
  },

  touchEnd: function(touch) {
    return this.mouseUp(touch);
  },

  init: function() {
    Ember.deprecate("Ember.Button is deprecated and will be removed from future releases. Consider using the `{{action}}` helper.");
    this._super();
  }
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, set = Ember.set;

/**
  The `Ember.TextArea` view class renders a
  [textarea](https://developer.mozilla.org/en/HTML/Element/textarea) element.
  It allows for binding Ember properties to the text area contents (`value`),
  live-updating as the user inputs text.

  ## Layout and LayoutName properties

  Because HTML `textarea` elements do not contain inner HTML the `layout` and `layoutName` 
  properties will not be applied. See `Ember.View`'s layout section for more information.

  ## HTML Attributes

  By default `Ember.TextArea` provides support for `rows`, `cols`, `placeholder`, `disabled`,
  `maxlength` and `tabindex` attributes on a textarea. If you need to support  more
  attributes have a look at the `attributeBindings` property in `Ember.View`'s HTML Attributes section.

  To globally add support for additional attributes you can reopen `Ember.TextArea` or `Ember.TextSupport`.

  ``` javascript
  Ember.TextSupport.reopen({
    attributeBindings: ["required"]
  })
  ```

  @class TextArea
  @namespace Ember
  @extends Ember.View
  @uses Ember.TextSupport
*/
Ember.TextArea = Ember.View.extend(Ember.TextSupport, {
  classNames: ['ember-text-area'],

  tagName: "textarea",
  attributeBindings: ['rows', 'cols'],
  rows: null,
  cols: null,

  _updateElementValue: Ember.observer(function() {
    // We do this check so cursor position doesn't get affected in IE
    var value = get(this, 'value'),
        $el = this.$();
    if ($el && value !== $el.val()) {
      $el.val(value);
    }
  }, 'value'),

  init: function() {
    this._super();
    this.on("didInsertElement", this, this._updateElementValue);
  }

});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

/**
@class TabContainerView
@namespace Ember
@deprecated
@extends Ember.View
*/
Ember.TabContainerView = Ember.View.extend({
  init: function() {
    Ember.deprecate("Ember.TabContainerView is deprecated and will be removed from future releases.");
    this._super();
  }
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get;

/**
  @class TabPaneView
  @namespace Ember
  @extends Ember.View
  @deprecated
*/
Ember.TabPaneView = Ember.View.extend({
  tabsContainer: Ember.computed(function() {
    return this.nearestOfType(Ember.TabContainerView);
  }).property().volatile(),

  isVisible: Ember.computed(function() {
    return get(this, 'viewName') === get(this, 'tabsContainer.currentView');
  }).property('tabsContainer.currentView').volatile(),

  init: function() {
    Ember.deprecate("Ember.TabPaneView is deprecated and will be removed from future releases.");
    this._super();
  }
});

})();



(function() {
/**
@module ember
@submodule ember-handlebars
*/

var get = Ember.get, setPath = Ember.setPath;

/**
@class TabView
@namespace Ember
@extends Ember.View
@deprecated
*/
Ember.TabView = Ember.View.extend({
  tabsContainer: Ember.computed(function() {
    return this.nearestInstanceOf(Ember.TabContainerView);
  }).property().volatile(),

  mouseUp: function() {
    setPath(this, 'tabsContainer.currentView', get(this, 'value'));
  },

  init: function() {
    Ember.deprecate("Ember.TabView is deprecated and will be removed from future releases.");
    this._super();
  }
});

})();



(function() {

})();



(function() {
/*jshint eqeqeq:false */

/**
@module ember
@submodule ember-handlebars
*/

var set = Ember.set,
    get = Ember.get,
    indexOf = Ember.EnumerableUtils.indexOf,
    indexesOf = Ember.EnumerableUtils.indexesOf,
    replace = Ember.EnumerableUtils.replace,
    isArray = Ember.isArray;

/**
  The Ember.Select view class renders a
  [select](https://developer.mozilla.org/en/HTML/Element/select) HTML element,
  allowing the user to choose from a list of options. 

  The text and `value` property of each `<option>` element within the `<select>` element
  are populated from the objects in the Element.Select's `content` property. The
  underlying data object of the selected `<option>` is stored in the
  Element.Select's `value` property.

  ### `content` as an array of Strings
  The simplest version of an Ember.Select takes an array of strings as its `content` property.
  The string will be used as both the `value` property and the inner text of each `<option>`
  element inside the rendered `<select>`.

  Example:

  ``` javascript
  App.names = ["Yehuda", "Tom"];
  ```

  ``` handlebars
  {{view Ember.Select contentBinding="App.names"}}
  ```

  Would result in the following HTML:

  ``` html
  <select class="ember-select">
    <option value="Yehuda">Yehuda</option>
    <option value="Tom">Tom</option>
  </select>
  ```

  You can control which `<option>` is selected through the Ember.Select's
  `value` property directly or as a binding:

  ``` javascript
  App.names = Ember.Object.create({
    selected: 'Tom',
    content: ["Yehuda", "Tom"]
  });
  ```

  ``` handlebars
  {{view Ember.Select
         contentBinding="App.names.content"
         valueBinding="App.names.selected"
  }}
  ```

  Would result in the following HTML with the `<option>` for 'Tom' selected:

  ``` html
  <select class="ember-select">
    <option value="Yehuda">Yehuda</option>
    <option value="Tom" selected="selected">Tom</option>
  </select>
  ```

  A user interacting with the rendered `<select>` to choose "Yehuda" would update
  the value of `App.names.selected` to "Yehuda".

  ### `content` as an Array of Objects
  An Ember.Select can also take an array of JavaScript or Ember objects
  as its `content` property.

  When using objects you need to tell the Ember.Select which property should be
  accessed on each object to supply the `value` attribute of the `<option>`
  and which property should be used to supply the element text.

  The `optionValuePath` option is used to specify the path on each object to
  the desired property for the `value` attribute.  The `optionLabelPath` 
  specifies the path on each object to the desired property for the 
  element's text. Both paths must reference each object itself as 'content':

  ``` javascript
  App.programmers = [
      Ember.Object.create({firstName: "Yehuda", id: 1}),
      Ember.Object.create({firstName: "Tom",    id: 2})
    ];
  ```

  ``` handlebars
  {{view Ember.Select
         contentBinding="App.programmers"
         optionValuePath="content.id"
         optionLabelPath="content.firstName"}}
  ```

  Would result in the following HTML:

  ``` html
  <select class="ember-select">
    <option value>Please Select</option>
    <option value="1">Yehuda</option>
    <option value="2">Tom</option>
  </select>
  ```


  The `value` attribute of the selected `<option>` within an Ember.Select
  can be bound to a property on another object by providing a
  `valueBinding` option:

  ``` javascript
  App.programmers = [
      Ember.Object.create({firstName: "Yehuda", id: 1}),
      Ember.Object.create({firstName: "Tom",    id: 2})
    ];

  App.currentProgrammer = Ember.Object.create({
    id: 2
  });
  ```

  ``` handlebars
  {{view Ember.Select
         contentBinding="App.programmers"
         optionValuePath="content.id"
         optionLabelPath="content.firstName"
         valueBinding="App.currentProgrammer.id"}}
  ```

  Would result in the following HTML with a selected option:

  ``` html
  <select class="ember-select">
    <option value>Please Select</option>
    <option value="1">Yehuda</option>
    <option value="2" selected="selected">Tom</option>
  </select>
  ```

  Interacting with the rendered element by selecting the first option
  ('Yehuda') will update the `id` value of `App.currentProgrammer`
  to match the `value` property of the newly selected `<option>`.

  Alternatively, you can control selection through the underlying objects
  used to render each object providing a `selectionBinding`. When the selected
  `<option>` is changed, the property path provided to `selectionBinding`
  will be updated to match the content object of the rendered `<option>`
  element: 

  ``` javascript
  App.controller = Ember.Object.create({
    selectedPerson: null,
    content: [
      Ember.Object.create({firstName: "Yehuda", id: 1}),
      Ember.Object.create({firstName: "Tom",    id: 2})
    ]
  });
  ```

  ``` handlebars
  {{view Ember.Select
         contentBinding="App.controller.content"
         optionValuePath="content.id"
         optionLabelPath="content.firstName"
         selectionBinding="App.controller.selectedPerson"}}
  ```

  Would result in the following HTML with a selected option:

  ``` html
  <select class="ember-select">
    <option value>Please Select</option>
    <option value="1">Yehuda</option>
    <option value="2" selected="selected">Tom</option>
  </select>
  ```


  Interacting with the rendered element by selecting the first option
  ('Yehuda') will update the `selectedPerson` value of `App.controller`
  to match the content object of the newly selected `<option>`. In this
  case it is the first object in the `App.content.content` 

  ### Supplying a Prompt

  A `null` value for the Ember.Select's `value` or `selection` property
  results in there being no `<option>` with a `selected` attribute:

  ``` javascript
  App.controller = Ember.Object.create({
    selected: null,
    content: [
      "Yehuda",
      "Tom"
    ]
  });
  ```

  ``` handlebars
  {{view Ember.Select
         contentBinding="App.controller.content"
         valueBinding="App.controller.selected"
  }}
  ```

  Would result in the following HTML:

  ``` html
  <select class="ember-select">
    <option value="Yehuda">Yehuda</option>
    <option value="Tom">Tom</option>
  </select>
  ```

  Although `App.controller.selected` is `null` and no `<option>`
  has a `selected` attribute the rendered HTML will display the
  first item as though it were selected. You can supply a string
  value for the Ember.Select to display when there is no selection
  with the `prompt` option:

  ``` javascript
  App.controller = Ember.Object.create({
    selected: null,
    content: [
      "Yehuda",
      "Tom"
    ]
  });
  ```

  ``` handlebars
  {{view Ember.Select
         contentBinding="App.controller.content"
         valueBinding="App.controller.selected"
         prompt="Please select a name"
  }}
  ```

  Would result in the following HTML:

  ``` html
  <select class="ember-select">
    <option>Please select a name</option>
    <option value="Yehuda">Yehuda</option>
    <option value="Tom">Tom</option>
  </select>
  ```

  @class Select
  @namespace Ember
  @extends Ember.View
*/
Ember.Select = Ember.View.extend(
  /** @scope Ember.Select.prototype */ {

  tagName: 'select',
  classNames: ['ember-select'],
  defaultTemplate: Ember.Handlebars.compile('{{#if view.prompt}}<option value>{{view.prompt}}</option>{{/if}}{{#each view.content}}{{view Ember.SelectOption contentBinding="this"}}{{/each}}'),
  attributeBindings: ['multiple', 'disabled', 'tabindex'],

  /**
    The `multiple` attribute of the select element. Indicates whether multiple
    options can be selected.

    @property multiple
    @type Boolean
    @default false
  */
  multiple: false,

  disabled: false,

  /**
    The list of options.

    If `optionLabelPath` and `optionValuePath` are not overridden, this should
    be a list of strings, which will serve simultaneously as labels and values.

    Otherwise, this should be a list of objects. For instance:

        content: Ember.A([
            { id: 1, firstName: 'Yehuda' },
            { id: 2, firstName: 'Tom' }
          ]),
        optionLabelPath: 'content.firstName',
        optionValuePath: 'content.id'

    @property content
    @type Array
    @default null
  */
  content: null,

  /**
    When `multiple` is false, the element of `content` that is currently
    selected, if any.

    When `multiple` is true, an array of such elements.

    @property selection
    @type Object or Array
    @default null
  */
  selection: null,

  /**
    In single selection mode (when `multiple` is false), value can be used to get
    the current selection's value or set the selection by it's value.

    It is not currently supported in multiple selection mode.

    @property value
    @type String
    @default null
  */
  value: Ember.computed(function(key, value) {
    if (arguments.length === 2) { return value; }

    var valuePath = get(this, 'optionValuePath').replace(/^content\.?/, '');
    return valuePath ? get(this, 'selection.' + valuePath) : get(this, 'selection');
  }).property('selection'),

  /**
    If given, a top-most dummy option will be rendered to serve as a user
    prompt.

    @property prompt
    @type String
    @default null
  */
  prompt: null,

  /**
    The path of the option labels. See `content`.

    @property optionLabelPath
    @type String
    @default 'content'
  */
  optionLabelPath: 'content',

  /**
    The path of the option values. See `content`.

    @property optionValuePath
    @type String
    @default 'content'
  */
  optionValuePath: 'content',

  _change: function() {
    if (get(this, 'multiple')) {
      this._changeMultiple();
    } else {
      this._changeSingle();
    }
  },

  selectionDidChange: Ember.observer(function() {
    var selection = get(this, 'selection');
    if (get(this, 'multiple')) {
      if (!isArray(selection)) {
        set(this, 'selection', Ember.A([selection]));
        return;
      }
      this._selectionDidChangeMultiple();
    } else {
      this._selectionDidChangeSingle();
    }
  }, 'selection.@each'),

  valueDidChange: Ember.observer(function() {
    var content = get(this, 'content'),
        value = get(this, 'value'),
        valuePath = get(this, 'optionValuePath').replace(/^content\.?/, ''),
        selectedValue = (valuePath ? get(this, 'selection.' + valuePath) : get(this, 'selection')),
        selection;

    if (value !== selectedValue) {
      selection = content.find(function(obj) {
        return value === (valuePath ? get(obj, valuePath) : obj);
      });

      this.set('selection', selection);
    }
  }, 'value'),


  _triggerChange: function() {
    var selection = get(this, 'selection');
    var value = get(this, 'value');

    if (selection) { this.selectionDidChange(); }
    if (value) { this.valueDidChange(); }

    this._change();
  },

  _changeSingle: function() {
    var selectedIndex = this.$()[0].selectedIndex,
        content = get(this, 'content'),
        prompt = get(this, 'prompt');

    if (!content) { return; }
    if (prompt && selectedIndex === 0) { set(this, 'selection', null); return; }

    if (prompt) { selectedIndex -= 1; }
    set(this, 'selection', content.objectAt(selectedIndex));
  },


  _changeMultiple: function() {
    var options = this.$('option:selected'),
        prompt = get(this, 'prompt'),
        offset = prompt ? 1 : 0,
        content = get(this, 'content'),
        selection = get(this, 'selection');

    if (!content){ return; }
    if (options) {
      var selectedIndexes = options.map(function(){
        return this.index - offset;
      }).toArray();
      var newSelection = content.objectsAt(selectedIndexes);

      if (isArray(selection)) {
        replace(selection, 0, get(selection, 'length'), newSelection);
      } else {
        set(this, 'selection', newSelection);
      }
    }
  },

  _selectionDidChangeSingle: function() {
    var el = this.get('element');
    if (!el) { return; }

    var content = get(this, 'content'),
        selection = get(this, 'selection'),
        selectionIndex = content ? indexOf(content, selection) : -1,
        prompt = get(this, 'prompt');

    if (prompt) { selectionIndex += 1; }
    if (el) { el.selectedIndex = selectionIndex; }
  },

  _selectionDidChangeMultiple: function() {
    var content = get(this, 'content'),
        selection = get(this, 'selection'),
        selectedIndexes = content ? indexesOf(content, selection) : [-1],
        prompt = get(this, 'prompt'),
        offset = prompt ? 1 : 0,
        options = this.$('option'),
        adjusted;

    if (options) {
      options.each(function() {
        adjusted = this.index > -1 ? this.index - offset : -1;
        this.selected = indexOf(selectedIndexes, adjusted) > -1;
      });
    }
  },

  init: function() {
    this._super();
    this.on("didInsertElement", this, this._triggerChange);
    this.on("change", this, this._change);
  }
});

Ember.SelectOption = Ember.View.extend({
  tagName: 'option',
  attributeBindings: ['value', 'selected'],

  defaultTemplate: function(context, options) {
    options = { data: options.data, hash: {} };
    Ember.Handlebars.helpers.bind.call(context, "view.label", options);
  },

  init: function() {
    this.labelPathDidChange();
    this.valuePathDidChange();

    this._super();
  },

  selected: Ember.computed(function() {
    var content = get(this, 'content'),
        selection = get(this, 'parentView.selection');
    if (get(this, 'parentView.multiple')) {
      return selection && indexOf(selection, content.valueOf()) > -1;
    } else {
      // Primitives get passed through bindings as objects... since
      // `new Number(4) !== 4`, we use `==` below
      return content == selection;
    }
  }).property('content', 'parentView.selection').volatile(),

  labelPathDidChange: Ember.observer(function() {
    var labelPath = get(this, 'parentView.optionLabelPath');

    if (!labelPath) { return; }

    Ember.defineProperty(this, 'label', Ember.computed(function() {
      return get(this, labelPath);
    }).property(labelPath));
  }, 'parentView.optionLabelPath'),

  valuePathDidChange: Ember.observer(function() {
    var valuePath = get(this, 'parentView.optionValuePath');

    if (!valuePath) { return; }

    Ember.defineProperty(this, 'value', Ember.computed(function() {
      return get(this, valuePath);
    }).property(valuePath));
  }, 'parentView.optionValuePath')
});

})();



(function() {

})();



(function() {
/*globals Handlebars */
/**
@module ember
@submodule ember-handlebars
*/

/**
  @private

  Find templates stored in the head tag as script tags and make them available
  to Ember.CoreView in the global Ember.TEMPLATES object. This will be run as as
  jQuery DOM-ready callback.

  Script tags with "text/x-handlebars" will be compiled
  with Ember's Handlebars and are suitable for use as a view's template.
  Those with type="text/x-raw-handlebars" will be compiled with regular
  Handlebars and are suitable for use in views' computed properties.

  @method bootstrap
  @for Ember.Handlebars
  @static
  @param ctx
*/
Ember.Handlebars.bootstrap = function(ctx) {
  var selectors = 'script[type="text/x-handlebars"], script[type="text/x-raw-handlebars"]';

  Ember.$(selectors, ctx)
    .each(function() {
    // Get a reference to the script tag
    var script = Ember.$(this),
        type   = script.attr('type');

    var compile = (script.attr('type') === 'text/x-raw-handlebars') ?
                  Ember.$.proxy(Handlebars.compile, Handlebars) :
                  Ember.$.proxy(Ember.Handlebars.compile, Ember.Handlebars),
      // Get the name of the script, used by Ember.View's templateName property.
      // First look for data-template-name attribute, then fall back to its
      // id if no name is found.
      templateName = script.attr('data-template-name') || script.attr('id') || 'application',
      template = compile(script.html());

    // For templates which have a name, we save them and then remove them from the DOM
    Ember.TEMPLATES[templateName] = template;

    // Remove script tag from DOM
    script.remove();
  });
};

function bootstrap() {
  Ember.Handlebars.bootstrap( Ember.$(document) );
}

/*
  We tie this to application.load to ensure that we've at least
  attempted to bootstrap at the point that the application is loaded.

  We also tie this to document ready since we're guaranteed that all
  the inline templates are present at this point.

  There's no harm to running this twice, since we remove the templates
  from the DOM after processing.
*/

Ember.onLoad('application', bootstrap);

})();



(function() {
/**
Ember Handlebars

@module ember
@submodule ember-handlebars
@requires ember-views
*/

})();

// Version: v1.0.0-pre.2
// Last commit: b851567 (2012-10-25 12:56:33 -0700)


(function() {
/**
Ember

@module ember
*/

})();