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Initial commit of jQuery Offline

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commit 076c0a17372eafa350fb0290c9c29c410e07feb0 0 parents
Yehuda Katz authored
1  .gitignore
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+qunit
3  Gemfile
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+source "http://rubygems.org"
+
+gem "rack"
153 README.textile
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+h1. jQuery Offline Plugin
+
+Web applications that wish to work robustly in flaky or offline scenarios can use client-side persistence to serve stale data while transparently trying to reconnect for more up-to-date data if possible.
+
+In a mobile scenario, the user may consider himself "connected" when in fact he has dropped out of connectivity for a moment (for instance, he may have gone under a tunnel). Because of this, and because latency on mobile devices can be quite high, a well-behaved mobile web application (or even simple website) will serve up content out of a local cache, so the user can see it quickly, before trying to make a connection to retrieve new content.
+
+This completely eliminates the fear of pressing the back button on mobile devices, since the user will be able to see the "index" page on a content site, for instance, even if their connection has temporarily dropped.
+
+The jQuery offline plugin provides an easy mechanism for retrieving JSON data from a remote server, and then caching it. Subsequent requests for the same URL will retrieve the data from the cache, rather than the remote server.
+
+If the user is online, the plugin will transparently request new content from the remote server, firing the callback again if the content has changed. If the user is offline, the plugin will request the data from the remote server for the most recent request when the user comes back online. You can explicitly silence the callback if you wish if the user moves away from the part of the application where it would be useful without entering an area of the page using cached data.
+
+jQuery Offline uses the HTML5 "@localStorage@ API":http://dev.w3.org/html5/webstorage/ for persistence. You can use the same API for browsers that do not support @localStorage@, jQuery Offline will simply fall back to making a request to the server each time. As a result @jQuery.retrieveJSON@ is a portable way to make a request for JSON that should be cached if possible.
+
+For more information on the basic strategy used here and the rationale for it, check out "Rack::Offline":http://github.com/wycats/rack-offline/blob/master/README.textile, starting from "Application Cache".
+
+h1. Recommended With
+
+jQuery Offline can be used standalone with jQuery 1.4.2 and above. However, it is best used in conjunction with "Rack::Offline":http://github.com/wycats/rack-offline and "jquery-templ":http://github.com/jquery/jquery-tmpl.
+
+@Rack::Offline@ automates the process of generating a cache manifest, and @jquery-templ@ automates the process of taking a JavaScript object retrieved via @jQuery.retrieveJSON@ and making HTML out of it.
+
+h1. Usage
+
+jQuery Offline provides two methods:
+
+h2. @jQuery.retrieveJSON@
+
+<pre lang="ruby">
+jQuery.retrieveJSON("/url", {data: "toSend"}, function(json, status, followUp) {
+ // json will be the same whether or not the cache was hit
+ // status will be either "success" or "cached"
+})
+</pre>
+
+@jQuery.retrieveJSON@ has the *same* API as @jQuery.getJSON@ with one exception: if the data is available in the cache, the callback will be called twice. First, it will be called with the object retrieved from the cache with the status "cached". Next, once the JSON request succeeds, it will be called with the object returned from the Ajax request with the status "success".
+
+If the Ajax request was made after a successful hit from the cache, jQuery Offline will make the third parameter to the function **true**. You might use this third parameter to alert the user that a change is about to happen, if such a change would be particularly jarring. Note that the value of this third parameter may change in a future release to provide additional information; a future-proof check would be: <code>if( status == "success" && followUp )</code>.
+
+Additionally, @jQuery.retrieveJSON@ will not make a request if a request is in-process for a particular URL/query-string combination.
+
+h2. @jQuery.clearJSON@
+
+@jQuery.clearJSON@ takes the same first two parameters as @jQuery.retrieveJSON@ and clears the associated key. You can use this function to forcibly purge the cache for a particular URL and set of data. In general, you should not have to do this, as jQuery Offline will always make a follow-up request for content from the server if possible.
+
+h1. Suggested Strategy for Offline Apps
+
+You should use jQuery Offline in combination with an HTML5 cache manifest and @jquery-tmpl@ for the best effect. An example follows.
+
+First, the HTML:
+
+<pre lang="html">
+<html manifest="application.manifest">
+ <head>
+ <link rel="stylesheet" href="/stylesheets/application.css" />
+ <script src="/javascripts/jquery.js"></script>
+ <script src="/javascripts/template.jquery.js"></script>
+ <script src="/javascripts/offline.jquery.js"></script>
+ <script id="articleTemplate" type="text/html">
+ {{each(article) articles}}
+ <article>
+ <header>
+ <h1>${article.title}</h1>
+ <h2>By ${article.byline}</h2>
+ </header>
+ ${article.body}
+ </article>
+ {{/each}}
+ </script>
+ </head>
+ <body>
+ <div id="loading"><img src="loading.png" /></div>
+ <header>
+ <img src="masthead.png" />
+ <nav><ul>
+ <li>Main List</li>
+ <li>Recommended</li>
+ </ul></nav>
+ </header>
+ <div id="articles">
+ </div>
+ <footer>
+ Copyright Me, Inc.
+ </footer>
+ </body>
+</html>
+</pre>
+
+And the JavaScript using jquery-tmpl and jQuery Offline:
+
+<pre lang="javascript">
+jQuery(document).ready(function($) {
+ // Since jQuery.retrieveJSON delegates to jQuery's Ajax
+ // to make requests, we can just set up normal jQuery
+ // Ajax listeners.
+ $("#loading").ajaxStart(function() { $(this).show(); });
+ $("#loading").ajaxStop(function() { $(this).hide(); });
+
+ var updateArticles = function(callback) {
+ $.retrieveJSON("/article_list.json", function(json, status) {
+ var content = $("#articleTemplate").render( json );
+ $("#articles").empty().append(content);
+
+ // If this *isn't* a cache hit, but rather a
+ // successful Ajax request, queue an update task
+ // for five minutes from now.
+ if( status == "success" ) { setTimeout( callback, 300000 ); }
+ });
+ };
+
+ // In five minutes, kick off a background request for
+ // more data. If the user is online, it will be processed
+ // immediately. If the user is not, it will queue the
+ // request for when the user comes online
+ setTimeout(function periodicUpdater() {
+ // Pass in this function as the callback to updateArticles
+ updateArticles(periodicUpdater);
+ }, 300000)
+
+ // Immediately try to retrieve the data. If the cached
+ // data is available, it will be used.
+ //
+ // If the user is online, it will kick off a request for
+ // updated content in the background. If not, it will
+ // queue the request for later.
+ updateArticles();
+});
+</pre>
+
+Because of the architecture of jQuery Offline, you can call $.retrieveJSON whether or not the user is online, and the plugin will either make an immediate request or kick off a request when the user comes back online. This also means you can kick off a timer for a request for new content in the callback to @jQuery.retrieveJSON@. If the user is online, it'll get new content every N minutes, like clockwork. If the user is offline, jQuery Offline will simply wait until the user comes back online to make the request.
+
+The above JavaScript is roughly equivalent to the JavaScript strategy I used in "Rack::Offline":http://github.com/wycats/rack-offline, but most of the dirty work is handled for you.
+
+h1. Tests
+
+jQuery Offline has a test suite that tests functionality in browsers with @localStorage@ and browsers without @localStorage@. To run the tests, you will need Ruby on your system. Then, follow these instructions in a checked out copy of this app:
+
+<pre>
+$ gem install bundler
+$ bundle install
+$ bundle exec rackup &
+$ open http://localhost:9292/index.html # to run the localStorage-enabled tests
+$ open http://localhost:9292/index-fallback.html # to run the localStorage-disabled tests
+</pre>
+
+jQuery Offline also passes JSLint.
+
+h1. TODO
+
+* Remember the time that the original content was cached; then provide it to
+ follow-up calls
+* Provide better fallback for browsers without localStorage
+* Provide more integrated support for jquery-templ?
47 config.ru
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+# Override Rack::Static to allow a fallthrough for missing files
+module Rack
+ class Static
+
+ def initialize(app, options={})
+ @app = app
+ @urls = options[:urls] || ["/favicon.ico"]
+ @root = options[:root] || Dir.pwd
+ @file_server = Rack::File.new(@root)
+ end
+
+ def call(env)
+ path = env["PATH_INFO"]
+ can_serve = @urls.any? { |url| path.index(url) == 0 }
+
+ if can_serve && ::File.exist?("#{@root}/#{path}")
+ @file_server.call(env)
+ else
+ @app.call(env)
+ end
+ end
+
+ end
+end
+
+use Rack::Static, :urls => ["/"], :root => "lib"
+use Rack::Static, :urls => ["/"], :root => "public"
+
+current = Hash.new(0)
+
+map "/reset" do
+ run proc {
+ current = Hash.new(0)
+ [200, {"Content-Type" => "text/plain"}, ["success"]]
+ }
+end
+
+map "/ajax/app" do
+ run proc { |env|
+ string = env["QUERY_STRING"]
+ now = current[string] += 1
+ [200,
+ {"Content-Type" => "application/json"},
+ [%{{"count": #{now}, "qs": #{string.inspect}}}]
+ ]
+ }
+end
109 lib/offline.jquery.js
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+(function($) {
+
+ var prefix = "offline.jquery:",
+ mostRecent = null,
+ requesting = {};
+
+ // Allow the user to explicitly turn off localStorage
+ // before loading this plugin
+ if (typeof $.support.localStorage === "undefined") {
+ $.support.localStorage = !!window.localStorage;
+ }
+
+ // modified getJSON which uses ifModified: true
+ function getJSON(url, data, fn) {
+ if (jQuery.isFunction(data)) {
+ fn = data;
+ data = null;
+ }
+
+ requestingKey = url + "?" + data;
+ if (requestingKey[requestingKey]) {
+ return false;
+ }
+
+ requesting[requestingKey] = true;
+
+ return jQuery.ajax({
+ type: "GET",
+ url: url,
+ data: data,
+ success: function(data, text) {
+ requesting[requestingKey] = false;
+ fn(data, text);
+ },
+ dataType: "json",
+ ifModified: true
+ });
+ }
+
+ if ($.support.localStorage) {
+ // If localStorage is available, define jQuery.retrieveJSON
+ // and jQuery.clearJSON to operate in terms of the offline
+ // cache
+ // If the user comes online, run the most recent request
+ // that was queued due to the user being offline
+ $(window).bind("online", function() {
+ if (mostRecent) {
+ mostRecent();
+ }
+ });
+
+ // If the user goes offline, hide any loading bar
+ // the user may have created
+ $(window).bind("offline", function() {
+ jQuery.event.trigger("ajaxStop");
+ });
+
+ $.retrieveJSON = function(url, data, fn) {
+ // allow jQuery.retrieveJSON(url, fn)
+ if ($.isFunction(data)) {
+ fn = data;
+ data = {};
+ }
+
+ // get a String value for the data passed in, and then
+ // use it to calculate a cache key
+ var param = $.param(data),
+ text = localStorage[prefix + url + ":" + param];
+
+ // create a function that will make an Ajax request and
+ // store the result in the cache. This function will be
+ // deferred until later if the user is offline
+ function getData() {
+ getJSON(url, param, function(json, status) {
+ localStorage[prefix + url + ":" + param] = JSON.stringify(json);
+ fn(json, status);
+ });
+ }
+
+ // If there is anything in the cache, call the callback
+ // right away, with the "cached" status string
+ if (text) {
+ fn($.parseJSON(text), "cached");
+ }
+
+ // If the user is online, make the Ajax request right away;
+ // otherwise, make it the most recent callback so it will
+ // get triggered when the user comes online
+ if (window.navigator.onLine) {
+ getData();
+ } else {
+ mostRecent = getData;
+ }
+ };
+
+ // jQuery.clearJSON is simply a wrapper around deleting the
+ // localStorage for a URL/data pair
+ $.clearJSON = function(url, data) {
+ var param = $.param(data || {});
+ delete localStorage[prefix + url + ":" + param];
+ };
+ } else {
+ // If localStorage is unavailable, just make all requests
+ // regular Ajax requests.
+ $.retrieveJSON = getJSON;
+ $.clearJSON = $.noop;
+ }
+
+})(jQuery);
18 public/index-fallback.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+ <script src="/jquery.js"></script>
+ <link rel="stylesheet" href="/qunit.css" type="text/css" media="screen" />
+ <script type="text/javascript" src="/qunit.js"></script>
+ <script>jQuery.support.localStorage = false;</script>
+ <script type="text/javascript" src="/offline.jquery.js"></script>
+ <script type="text/javascript" src="/tests/test.offline.js"></script>
+</head>
+<body>
+ <h1 id="qunit-header">QUnit example</h1>
+ <h2 id="qunit-banner"></h2>
+ <h2 id="qunit-userAgent"></h2>
+ <ol id="qunit-tests"></ol>
+</body>
+</html>
18 public/index.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+ <script src="/jquery.js"></script>
+ <link rel="stylesheet" href="/qunit.css" type="text/css" media="screen" />
+ <script type="text/javascript" src="/qunit.js"></script>
+ <script>jQuery.support.localStorage = true;</script>
+ <script type="text/javascript" src="/offline.jquery.js"></script>
+ <script type="text/javascript" src="/tests/test.offline.js"></script>
+</head>
+<body>
+ <h1 id="qunit-header">QUnit example</h1>
+ <h2 id="qunit-banner"></h2>
+ <h2 id="qunit-userAgent"></h2>
+ <ol id="qunit-tests"></ol>
+</body>
+</html>
154 public/jquery.js
@@ -0,0 +1,154 @@
+/*!
+ * jQuery JavaScript Library v1.4.2
+ * http://jquery.com/
+ *
+ * Copyright 2010, John Resig
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * Includes Sizzle.js
+ * http://sizzlejs.com/
+ * Copyright 2010, The Dojo Foundation
+ * Released under the MIT, BSD, and GPL Licenses.
+ *
+ * Date: Sat Feb 13 22:33:48 2010 -0500
+ */
+(function(A,w){function ma(){if(!c.isReady){try{s.documentElement.doScroll("left")}catch(a){setTimeout(ma,1);return}c.ready()}}function Qa(a,b){b.src?c.ajax({url:b.src,async:false,dataType:"script"}):c.globalEval(b.text||b.textContent||b.innerHTML||"");b.parentNode&&b.parentNode.removeChild(b)}function X(a,b,d,f,e,j){var i=a.length;if(typeof b==="object"){for(var o in b)X(a,o,b[o],f,e,d);return a}if(d!==w){f=!j&&f&&c.isFunction(d);for(o=0;o<i;o++)e(a[o],b,f?d.call(a[o],o,e(a[o],b)):d,j);return a}return i?
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+/*
+ * QUnit - A JavaScript Unit Testing Framework
+ *
+ * http://docs.jquery.com/QUnit
+ *
+ * Copyright (c) 2009 John Resig, Jörn Zaefferer
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ */
+
+(function(window) {
+
+var QUnit = {
+
+ // Initialize the configuration options
+ init: function() {
+ config = {
+ stats: { all: 0, bad: 0 },
+ moduleStats: { all: 0, bad: 0 },
+ started: +new Date,
+ updateRate: 1000,
+ blocking: false,
+ autorun: false,
+ assertions: [],
+ filters: [],
+ queue: []
+ };
+
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+
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+ }
+
+ if ( banner ) {
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+ }
+
+ if ( result ) {
+ result.parentNode.removeChild( result );
+ }
+ },
+
+ // call on start of module test to prepend name to all tests
+ module: function(name, testEnvironment) {
+ config.currentModule = name;
+
+ synchronize(function() {
+ if ( config.currentModule ) {
+ QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
+ }
+
+ config.currentModule = name;
+ config.moduleTestEnvironment = testEnvironment;
+ config.moduleStats = { all: 0, bad: 0 };
+
+ QUnit.moduleStart( name, testEnvironment );
+ });
+ },
+
+ asyncTest: function(testName, expected, callback) {
+ if ( arguments.length === 2 ) {
+ callback = expected;
+ expected = 0;
+ }
+
+ QUnit.test(testName, expected, callback, true);
+ },
+
+ test: function(testName, expected, callback, async) {
+ var name = testName, testEnvironment, testEnvironmentArg;
+
+ if ( arguments.length === 2 ) {
+ callback = expected;
+ expected = null;
+ }
+ // is 2nd argument a testEnvironment?
+ if ( expected && typeof expected === 'object') {
+ testEnvironmentArg = expected;
+ expected = null;
+ }
+
+ if ( config.currentModule ) {
+ name = config.currentModule + " module: " + name;
+ }
+
+ if ( !validTest(name) ) {
+ return;
+ }
+
+ synchronize(function() {
+ QUnit.testStart( testName );
+
+ testEnvironment = extend({
+ setup: function() {},
+ teardown: function() {}
+ }, config.moduleTestEnvironment);
+ if (testEnvironmentArg) {
+ extend(testEnvironment,testEnvironmentArg);
+ }
+
+ // allow utility functions to access the current test environment
+ QUnit.current_testEnvironment = testEnvironment;
+
+ config.assertions = [];
+ config.expected = expected;
+
+ try {
+ if ( !config.pollution ) {
+ saveGlobal();
+ }
+
+ testEnvironment.setup.call(testEnvironment);
+ } catch(e) {
+ QUnit.ok( false, "Setup failed on " + name + ": " + e.message );
+ }
+
+ if ( async ) {
+ QUnit.stop();
+ }
+
+ try {
+ callback.call(testEnvironment);
+ } catch(e) {
+ fail("Test " + name + " died, exception and test follows", e, callback);
+ QUnit.ok( false, "Died on test #" + (config.assertions.length + 1) + ": " + e.message );
+ // else next test will carry the responsibility
+ saveGlobal();
+
+ // Restart the tests if they're blocking
+ if ( config.blocking ) {
+ start();
+ }
+ }
+ });
+
+ synchronize(function() {
+ try {
+ checkPollution();
+ testEnvironment.teardown.call(testEnvironment);
+ } catch(e) {
+ QUnit.ok( false, "Teardown failed on " + name + ": " + e.message );
+ }
+
+ try {
+ QUnit.reset();
+ } catch(e) {
+ fail("reset() failed, following Test " + name + ", exception and reset fn follows", e, reset);
+ }
+
+ if ( config.expected && config.expected != config.assertions.length ) {
+ QUnit.ok( false, "Expected " + config.expected + " assertions, but " + config.assertions.length + " were run" );
+ }
+
+ var good = 0, bad = 0,
+ tests = id("qunit-tests");
+
+ config.stats.all += config.assertions.length;
+ config.moduleStats.all += config.assertions.length;
+
+ if ( tests ) {
+ var ol = document.createElement("ol");
+ ol.style.display = "none";
+
+ for ( var i = 0; i < config.assertions.length; i++ ) {
+ var assertion = config.assertions[i];
+
+ var li = document.createElement("li");
+ li.className = assertion.result ? "pass" : "fail";
+ li.appendChild(document.createTextNode(assertion.message || "(no message)"));
+ ol.appendChild( li );
+
+ if ( assertion.result ) {
+ good++;
+ } else {
+ bad++;
+ config.stats.bad++;
+ config.moduleStats.bad++;
+ }
+ }
+
+ var b = document.createElement("strong");
+ b.innerHTML = name + " <b style='color:black;'>(<b class='fail'>" + bad + "</b>, <b class='pass'>" + good + "</b>, " + config.assertions.length + ")</b>";
+
+ addEvent(b, "click", function() {
+ var next = b.nextSibling, display = next.style.display;
+ next.style.display = display === "none" ? "block" : "none";
+ });
+
+ addEvent(b, "dblclick", function(e) {
+ var target = e && e.target ? e.target : window.event.srcElement;
+ if ( target.nodeName.toLowerCase() === "strong" ) {
+ var text = "", node = target.firstChild;
+
+ while ( node.nodeType === 3 ) {
+ text += node.nodeValue;
+ node = node.nextSibling;
+ }
+
+ text = text.replace(/(^\s*|\s*$)/g, "");
+
+ if ( window.location ) {
+ window.location.href = window.location.href.match(/^(.+?)(\?.*)?$/)[1] + "?" + encodeURIComponent(text);
+ }
+ }
+ });
+
+ var li = document.createElement("li");
+ li.className = bad ? "fail" : "pass";
+ li.appendChild( b );
+ li.appendChild( ol );
+ tests.appendChild( li );
+
+ if ( bad ) {
+ var toolbar = id("qunit-testrunner-toolbar");
+ if ( toolbar ) {
+ toolbar.style.display = "block";
+ id("qunit-filter-pass").disabled = null;
+ id("qunit-filter-missing").disabled = null;
+ }
+ }
+
+ } else {
+ for ( var i = 0; i < config.assertions.length; i++ ) {
+ if ( !config.assertions[i].result ) {
+ bad++;
+ config.stats.bad++;
+ config.moduleStats.bad++;
+ }
+ }
+ }
+
+ QUnit.testDone( testName, bad, config.assertions.length );
+
+ if ( !window.setTimeout && !config.queue.length ) {
+ done();
+ }
+ });
+
+ if ( window.setTimeout && !config.doneTimer ) {
+ config.doneTimer = window.setTimeout(function(){
+ if ( !config.queue.length ) {
+ done();
+ } else {
+ synchronize( done );
+ }
+ }, 13);
+ }
+ },
+
+ /**
+ * Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
+ */
+ expect: function(asserts) {
+ config.expected = asserts;
+ },
+
+ /**
+ * Asserts true.
+ * @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
+ */
+ ok: function(a, msg) {
+ QUnit.log(a, msg);
+
+ config.assertions.push({
+ result: !!a,
+ message: msg
+ });
+ },
+
+ /**
+ * Checks that the first two arguments are equal, with an optional message.
+ * Prints out both actual and expected values.
+ *
+ * Prefered to ok( actual == expected, message )
+ *
+ * @example equal( format("Received {0} bytes.", 2), "Received 2 bytes." );
+ *
+ * @param Object actual
+ * @param Object expected
+ * @param String message (optional)
+ */
+ equal: function(actual, expected, message) {
+ push(expected == actual, actual, expected, message);
+ },
+
+ notEqual: function(actual, expected, message) {
+ push(expected != actual, actual, expected, message);
+ },
+
+ deepEqual: function(a, b, message) {
+ push(QUnit.equiv(a, b), a, b, message);
+ },
+
+ notDeepEqual: function(a, b, message) {
+ push(!QUnit.equiv(a, b), a, b, message);
+ },
+
+ strictEqual: function(actual, expected, message) {
+ push(expected === actual, actual, expected, message);
+ },
+
+ notStrictEqual: function(actual, expected, message) {
+ push(expected !== actual, actual, expected, message);
+ },
+
+ start: function() {
+ // A slight delay, to avoid any current callbacks
+ if ( window.setTimeout ) {
+ window.setTimeout(function() {
+ if ( config.timeout ) {
+ clearTimeout(config.timeout);
+ }
+
+ config.blocking = false;
+ process();
+ }, 13);
+ } else {
+ config.blocking = false;
+ process();
+ }
+ },
+
+ stop: function(timeout) {
+ config.blocking = true;
+
+ if ( timeout && window.setTimeout ) {
+ config.timeout = window.setTimeout(function() {
+ QUnit.ok( false, "Test timed out" );
+ QUnit.start();
+ }, timeout);
+ }
+ },
+
+ /**
+ * Resets the test setup. Useful for tests that modify the DOM.
+ */
+ reset: function() {
+ if ( window.jQuery ) {
+ jQuery("#main").html( config.fixture );
+ jQuery.event.global = {};
+ jQuery.ajaxSettings = extend({}, config.ajaxSettings);
+ }
+ },
+
+ /**
+ * Trigger an event on an element.
+ *
+ * @example triggerEvent( document.body, "click" );
+ *
+ * @param DOMElement elem
+ * @param String type
+ */
+ triggerEvent: function( elem, type, event ) {
+ if ( document.createEvent ) {
+ event = document.createEvent("MouseEvents");
+ event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
+ 0, 0, 0, 0, 0, false, false, false, false, 0, null);
+ elem.dispatchEvent( event );
+
+ } else if ( elem.fireEvent ) {
+ elem.fireEvent("on"+type);
+ }
+ },
+
+ // Safe object type checking
+ is: function( type, obj ) {
+ return Object.prototype.toString.call( obj ) === "[object "+ type +"]";
+ },
+
+ // Logging callbacks
+ done: function(failures, total) {},
+ log: function(result, message) {},
+ testStart: function(name) {},
+ testDone: function(name, failures, total) {},
+ moduleStart: function(name, testEnvironment) {},
+ moduleDone: function(name, failures, total) {}
+};
+
+// Backwards compatibility, deprecated
+QUnit.equals = QUnit.equal;
+QUnit.same = QUnit.deepEqual;
+
+// Maintain internal state
+var config = {
+ // The queue of tests to run
+ queue: [],
+
+ // block until document ready
+ blocking: true
+};
+
+// Load paramaters
+(function() {
+ var location = window.location || { search: "", protocol: "file:" },
+ GETParams = location.search.slice(1).split('&');
+
+ for ( var i = 0; i < GETParams.length; i++ ) {
+ GETParams[i] = decodeURIComponent( GETParams[i] );
+ if ( GETParams[i] === "noglobals" ) {
+ GETParams.splice( i, 1 );
+ i--;
+ config.noglobals = true;
+ } else if ( GETParams[i].search('=') > -1 ) {
+ GETParams.splice( i, 1 );
+ i--;
+ }
+ }
+
+ // restrict modules/tests by get parameters
+ config.filters = GETParams;
+
+ // Figure out if we're running the tests from a server or not
+ QUnit.isLocal = !!(location.protocol === 'file:');
+})();
+
+// Expose the API as global variables, unless an 'exports'
+// object exists, in that case we assume we're in CommonJS
+if ( typeof exports === "undefined" || typeof require === "undefined" ) {
+ extend(window, QUnit);
+ window.QUnit = QUnit;
+} else {
+ extend(exports, QUnit);
+ exports.QUnit = QUnit;
+}
+
+if ( typeof document === "undefined" || document.readyState === "complete" ) {
+ config.autorun = true;
+}
+
+addEvent(window, "load", function() {
+ // Initialize the config, saving the execution queue
+ var oldconfig = extend({}, config);
+ QUnit.init();
+ extend(config, oldconfig);
+
+ config.blocking = false;
+
+ var userAgent = id("qunit-userAgent");
+ if ( userAgent ) {
+ userAgent.innerHTML = navigator.userAgent;
+ }
+
+ var toolbar = id("qunit-testrunner-toolbar");
+ if ( toolbar ) {
+ toolbar.style.display = "none";
+
+ var filter = document.createElement("input");
+ filter.type = "checkbox";
+ filter.id = "qunit-filter-pass";
+ filter.disabled = true;
+ addEvent( filter, "click", function() {
+ var li = document.getElementsByTagName("li");
+ for ( var i = 0; i < li.length; i++ ) {
+ if ( li[i].className.indexOf("pass") > -1 ) {
+ li[i].style.display = filter.checked ? "none" : "";
+ }
+ }
+ });
+ toolbar.appendChild( filter );
+
+ var label = document.createElement("label");
+ label.setAttribute("for", "qunit-filter-pass");
+ label.innerHTML = "Hide passed tests";
+ toolbar.appendChild( label );
+
+ var missing = document.createElement("input");
+ missing.type = "checkbox";
+ missing.id = "qunit-filter-missing";
+ missing.disabled = true;
+ addEvent( missing, "click", function() {
+ var li = document.getElementsByTagName("li");
+ for ( var i = 0; i < li.length; i++ ) {
+ if ( li[i].className.indexOf("fail") > -1 && li[i].innerHTML.indexOf('missing test - untested code is broken code') > - 1 ) {
+ li[i].parentNode.parentNode.style.display = missing.checked ? "none" : "block";
+ }
+ }
+ });
+ toolbar.appendChild( missing );
+
+ label = document.createElement("label");
+ label.setAttribute("for", "qunit-filter-missing");
+ label.innerHTML = "Hide missing tests (untested code is broken code)";
+ toolbar.appendChild( label );
+ }
+
+ var main = id('main');
+ if ( main ) {
+ config.fixture = main.innerHTML;
+ }
+
+ if ( window.jQuery ) {
+ config.ajaxSettings = window.jQuery.ajaxSettings;
+ }
+
+ QUnit.start();
+});
+
+function done() {
+ if ( config.doneTimer && window.clearTimeout ) {
+ window.clearTimeout( config.doneTimer );
+ config.doneTimer = null;
+ }
+
+ if ( config.queue.length ) {
+ config.doneTimer = window.setTimeout(function(){
+ if ( !config.queue.length ) {
+ done();
+ } else {
+ synchronize( done );
+ }
+ }, 13);
+
+ return;
+ }
+
+ config.autorun = true;
+
+ // Log the last module results
+ if ( config.currentModule ) {
+ QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
+ }
+
+ var banner = id("qunit-banner"),
+ tests = id("qunit-tests"),
+ html = ['Tests completed in ',
+ +new Date - config.started, ' milliseconds.<br/>',
+ '<span class="passed">', config.stats.all - config.stats.bad, '</span> tests of <span class="total">', config.stats.all, '</span> passed, <span class="failed">', config.stats.bad,'</span> failed.'].join('');
+
+ if ( banner ) {
+ banner.className = (config.stats.bad ? "qunit-fail" : "qunit-pass");
+ }
+
+ if ( tests ) {
+ var result = id("qunit-testresult");
+
+ if ( !result ) {
+ result = document.createElement("p");
+ result.id = "qunit-testresult";
+ result.className = "result";
+ tests.parentNode.insertBefore( result, tests.nextSibling );
+ }
+
+ result.innerHTML = html;
+ }
+
+ QUnit.done( config.stats.bad, config.stats.all );
+}
+
+function validTest( name ) {
+ var i = config.filters.length,
+ run = false;
+
+ if ( !i ) {
+ return true;
+ }
+
+ while ( i-- ) {
+ var filter = config.filters[i],
+ not = filter.charAt(0) == '!';
+
+ if ( not ) {
+ filter = filter.slice(1);
+ }
+
+ if ( name.indexOf(filter) !== -1 ) {
+ return !not;
+ }
+
+ if ( not ) {
+ run = true;
+ }
+ }
+
+ return run;
+}
+
+function push(result, actual, expected, message) {
+ message = message || (result ? "okay" : "failed");
+ QUnit.ok( result, result ? message + ": " + QUnit.jsDump.parse(expected) : message + ", expected: " + QUnit.jsDump.parse(expected) + " result: " + QUnit.jsDump.parse(actual) );
+}
+
+function synchronize( callback ) {
+ config.queue.push( callback );
+
+ if ( config.autorun && !config.blocking ) {
+ process();
+ }
+}
+
+function process() {
+ var start = (new Date()).getTime();
+
+ while ( config.queue.length && !config.blocking ) {
+ if ( config.updateRate <= 0 || (((new Date()).getTime() - start) < config.updateRate) ) {
+ config.queue.shift()();
+
+ } else {
+ setTimeout( process, 13 );
+ break;
+ }
+ }
+}
+
+function saveGlobal() {
+ config.pollution = [];
+
+ if ( config.noglobals ) {
+ for ( var key in window ) {
+ config.pollution.push( key );
+ }
+ }
+}
+
+function checkPollution( name ) {
+ var old = config.pollution;
+ saveGlobal();
+
+ var newGlobals = diff( old, config.pollution );
+ if ( newGlobals.length > 0 ) {
+ ok( false, "Introduced global variable(s): " + newGlobals.join(", ") );
+ config.expected++;
+ }
+
+ var deletedGlobals = diff( config.pollution, old );
+ if ( deletedGlobals.length > 0 ) {
+ ok( false, "Deleted global variable(s): " + deletedGlobals.join(", ") );
+ config.expected++;
+ }
+}
+
+// returns a new Array with the elements that are in a but not in b
+function diff( a, b ) {
+ var result = a.slice();
+ for ( var i = 0; i < result.length; i++ ) {
+ for ( var j = 0; j < b.length; j++ ) {
+ if ( result[i] === b[j] ) {
+ result.splice(i, 1);
+ i--;
+ break;
+ }
+ }
+ }
+ return result;
+}
+
+function fail(message, exception, callback) {
+ if ( typeof console !== "undefined" && console.error && console.warn ) {
+ console.error(message);
+ console.error(exception);
+ console.warn(callback.toString());
+
+ } else if ( window.opera && opera.postError ) {
+ opera.postError(message, exception, callback.toString);
+ }
+}
+
+function extend(a, b) {
+ for ( var prop in b ) {
+ a[prop] = b[prop];
+ }
+
+ return a;
+}
+
+function addEvent(elem, type, fn) {
+ if ( elem.addEventListener ) {
+ elem.addEventListener( type, fn, false );
+ } else if ( elem.attachEvent ) {
+ elem.attachEvent( "on" + type, fn );
+ } else {
+ fn();
+ }
+}
+
+function id(name) {
+ return !!(typeof document !== "undefined" && document && document.getElementById) &&
+ document.getElementById( name );
+}
+
+// Test for equality any JavaScript type.
+// Discussions and reference: http://philrathe.com/articles/equiv
+// Test suites: http://philrathe.com/tests/equiv
+// Author: Philippe Rathé <prathe@gmail.com>
+QUnit.equiv = function () {
+
+ var innerEquiv; // the real equiv function
+ var callers = []; // stack to decide between skip/abort functions
+ var parents = []; // stack to avoiding loops from circular referencing
+
+
+ // Determine what is o.
+ function hoozit(o) {
+ if (QUnit.is("String", o)) {
+ return "string";
+
+ } else if (QUnit.is("Boolean", o)) {
+ return "boolean";
+
+ } else if (QUnit.is("Number", o)) {
+
+ if (isNaN(o)) {
+ return "nan";
+ } else {
+ return "number";
+ }
+
+ } else if (typeof o === "undefined") {
+ return "undefined";
+
+ // consider: typeof null === object
+ } else if (o === null) {
+ return "null";
+
+ // consider: typeof [] === object
+ } else if (QUnit.is( "Array", o)) {
+ return "array";
+
+ // consider: typeof new Date() === object
+ } else if (QUnit.is( "Date", o)) {
+ return "date";
+
+ // consider: /./ instanceof Object;
+ // /./ instanceof RegExp;
+ // typeof /./ === "function"; // => false in IE and Opera,
+ // true in FF and Safari
+ } else if (QUnit.is( "RegExp", o)) {
+ return "regexp";
+
+ } else if (typeof o === "object") {
+ return "object";
+
+ } else if (QUnit.is( "Function", o)) {
+ return "function";
+ } else {
+ return undefined;
+ }
+ }
+
+ // Call the o related callback with the given arguments.
+ function bindCallbacks(o, callbacks, args) {
+ var prop = hoozit(o);
+ if (prop) {
+ if (hoozit(callbacks[prop]) === "function") {
+ return callbacks[prop].apply(callbacks, args);
+ } else {
+ return callbacks[prop]; // or undefined
+ }
+ }
+ }
+
+ var callbacks = function () {
+
+ // for string, boolean, number and null
+ function useStrictEquality(b, a) {
+ if (b instanceof a.constructor || a instanceof b.constructor) {
+ // to catch short annotaion VS 'new' annotation of a declaration
+ // e.g. var i = 1;
+ // var j = new Number(1);
+ return a == b;
+ } else {
+ return a === b;
+ }
+ }
+
+ return {
+ "string": useStrictEquality,
+ "boolean": useStrictEquality,
+ "number": useStrictEquality,
+ "null": useStrictEquality,
+ "undefined": useStrictEquality,
+
+ "nan": function (b) {
+ return isNaN(b);
+ },
+
+ "date": function (b, a) {
+ return hoozit(b) === "date" && a.valueOf() === b.valueOf();
+ },
+
+ "regexp": function (b, a) {
+ return hoozit(b) === "regexp" &&
+ a.source === b.source && // the regex itself
+ a.global === b.global && // and its modifers (gmi) ...
+ a.ignoreCase === b.ignoreCase &&
+ a.multiline === b.multiline;
+ },
+
+ // - skip when the property is a method of an instance (OOP)
+ // - abort otherwise,
+ // initial === would have catch identical references anyway
+ "function": function () {
+ var caller = callers[callers.length - 1];
+ return caller !== Object &&
+ typeof caller !== "undefined";
+ },
+
+ "array": function (b, a) {
+ var i, j, loop;
+ var len;
+
+ // b could be an object literal here
+ if ( ! (hoozit(b) === "array")) {
+ return false;
+ }
+
+ len = a.length;
+ if (len !== b.length) { // safe and faster
+ return false;
+ }
+
+ //track reference to avoid circular references
+ parents.push(a);
+ for (i = 0; i < len; i++) {
+ loop = false;
+ for(j=0;j<parents.length;j++){
+ if(parents[j] === a[i]){
+ loop = true;//dont rewalk array
+ }
+ }
+ if (!loop && ! innerEquiv(a[i], b[i])) {
+ parents.pop();
+ return false;
+ }
+ }
+ parents.pop();
+ return true;
+ },
+
+ "object": function (b, a) {
+ var i, j, loop;
+ var eq = true; // unless we can proove it
+ var aProperties = [], bProperties = []; // collection of strings
+
+ // comparing constructors is more strict than using instanceof
+ if ( a.constructor !== b.constructor) {
+ return false;
+ }
+
+ // stack constructor before traversing properties
+ callers.push(a.constructor);
+ //track reference to avoid circular references
+ parents.push(a);
+
+ for (i in a) { // be strict: don't ensures hasOwnProperty and go deep
+ loop = false;
+ for(j=0;j<parents.length;j++){
+ if(parents[j] === a[i])
+ loop = true; //don't go down the same path twice
+ }
+ aProperties.push(i); // collect a's properties
+
+ if (!loop && ! innerEquiv(a[i], b[i])) {
+ eq = false;
+ break;
+ }
+ }
+
+ callers.pop(); // unstack, we are done
+ parents.pop();
+
+ for (i in b) {
+ bProperties.push(i); // collect b's properties
+ }
+
+ // Ensures identical properties name
+ return eq && innerEquiv(aProperties.sort(), bProperties.sort());
+ }
+ };
+ }();
+
+ innerEquiv = function () { // can take multiple arguments
+ var args = Array.prototype.slice.apply(arguments);
+ if (args.length < 2) {
+ return true; // end transition
+ }
+
+ return (function (a, b) {
+ if (a === b) {
+ return true; // catch the most you can
+ } else if (a === null || b === null || typeof a === "undefined" || typeof b === "undefined" || hoozit(a) !== hoozit(b)) {
+ return false; // don't lose time with error prone cases
+ } else {
+ return bindCallbacks(a, callbacks, [b, a]);
+ }
+
+ // apply transition with (1..n) arguments
+ })(args[0], args[1]) && arguments.callee.apply(this, args.splice(1, args.length -1));
+ };
+
+ return innerEquiv;
+
+}();
+
+/**
+ * jsDump
+ * Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
+ * Licensed under BSD (http://www.opensource.org/licenses/bsd-license.php)
+ * Date: 5/15/2008
+ * @projectDescription Advanced and extensible data dumping for Javascript.
+ * @version 1.0.0
+ * @author Ariel Flesler
+ * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
+ */
+QUnit.jsDump = (function() {
+ function quote( str ) {
+ return '"' + str.toString().replace(/"/g, '\\"') + '"';
+ };
+ function literal( o ) {
+ return o + '';
+ };
+ function join( pre, arr, post ) {
+ var s = jsDump.separator(),
+ base = jsDump.indent(),
+ inner = jsDump.indent(1);
+ if ( arr.join )
+ arr = arr.join( ',' + s + inner );
+ if ( !arr )
+ return pre + post;
+ return [ pre, inner + arr, base + post ].join(s);
+ };
+ function array( arr ) {
+ var i = arr.length, ret = Array(i);
+ this.up();
+ while ( i-- )
+ ret[i] = this.parse( arr[i] );
+ this.down();
+ return join( '[', ret, ']' );
+ };
+
+ var reName = /^function (\w+)/;
+
+ var jsDump = {
+ parse:function( obj, type ) { //type is used mostly internally, you can fix a (custom)type in advance
+ var parser = this.parsers[ type || this.typeOf(obj) ];
+ type = typeof parser;
+
+ return type == 'function' ? parser.call( this, obj ) :
+ type == 'string' ? parser :
+ this.parsers.error;
+ },
+ typeOf:function( obj ) {
+ var type;