/
domplate.js
1598 lines (1245 loc) · 43.9 KB
/
domplate.js
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/**
* Original source by Joe Hewitt (http://joehewitt.com/).
* @see http://code.google.com/p/fbug/source/browse/branches/firebug1.4/content/firebug/domplate.js
*/
/**
* Modifications by Christoph Dorn <christoph@christophdorn.com>:
*
* Sep 7, 2008: Added DomplateDebug logging
* Sep 10, 2008: Added support for multiple function arguments
* Sep 16, 2008: Removed calls to FBTrace as DomplateDebug does that now
* Removed requirement for FBL
* Removed use of top. scope
* Started work on IF support
*
*
*/
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
exports.tags = {};
exports.tags._domplate_ = exports;
var DomplateTag = exports.DomplateTag = function DomplateTag(tagName)
{
this.tagName = tagName;
}
function DomplateEmbed()
{
}
function DomplateLoop()
{
}
function DomplateIf()
{
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
function copyArray(oldArray)
{
var ary = [];
if (oldArray)
for (var i = 0; i < oldArray.length; ++i)
ary.push(oldArray[i]);
return ary;
}
function copyObject(l, r)
{
var m = {};
extend(m, l);
extend(m, r);
return m;
}
function extend(l, r)
{
for (var n in r)
l[n] = r[n];
}
// * DEBUG * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
var DomplateDebug
DomplateDebug = exports.DomplateDebug = {
enabled: false,
console: null,
replaceInstance: function(instance) {
DomplateDebug = instance;
},
setEnabled: function(enabled)
{
this.enabled = enabled;
},
setConsole: function(console)
{
this.console = console;
},
log: function(label, value)
{
if(!this.enabled) return;
if(arguments.length==2) {
this.console.log(label+': ',value);
} else {
this.console.log(label);
}
},
logVar: function(label, value)
{
if(!this.enabled) return;
this.console.log(label+': ',[value]);
},
logInfo: function(message)
{
if(!this.enabled) return;
this.console.info(message);
},
logWarn: function(message)
{
if(!this.enabled) return;
this.console.warn(message);
},
logJs: function(label, value)
{
if(!this.enabled) return;
value = value.replace(/;/g,';\n');
value = value.replace(/{/g,'{\n');
this.console.info(value);
},
reformatArguments: function(args)
{
if(!this.enabled) return;
var returnVar = new Array();
for (var i = 0; i < args.length; ++i)
{
var index = args[i];
returnVar.push([index]);
}
return {'arguments':returnVar};
},
startGroup: function(label,args)
{
if(!this.enabled) return;
if(this.isArray(label)) {
label.splice(1,0,' - ');
this.console.group.apply(this,label);
} else {
this.console.group(label);
}
if(args!=null) {
this.logVar('ARGUMENTS',DomplateDebug.reformatArguments(args));
}
},
endGroup: function()
{
if(!this.enabled) return;
this.console.groupEnd();
},
isArray: function(obj) {
if (obj.constructor.toString().indexOf("Array") != -1) {
return true;
}
return false;
}
}
// * DEBUG * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
var womb = null;
var domplate = exports.domplate = function()
{
var lastSubject;
for (var i = 0; i < arguments.length; ++i)
lastSubject = lastSubject ? copyObject(lastSubject, arguments[i]) : arguments[i];
for (var name in lastSubject)
{
var val = lastSubject[name];
if (isTag(val))
val.tag.subject = lastSubject;
}
return lastSubject;
};
domplate.context = function(context, fn)
{
var lastContext = domplate.lastContext;
domplate.topContext = context;
fn.apply(context);
domplate.topContext = lastContext;
};
exports.tags.TAG = function()
//domplate.TAG = function()
{
var embed = new DomplateEmbed();
return embed.merge(arguments);
};
exports.tags.FOR = domplate.FOR = function()
{
var loop = new DomplateLoop();
return loop.merge(arguments);
};
exports.tags.IF = domplate.IF = function()
{
var loop = new DomplateIf();
return loop.merge(arguments);
};
DomplateTag.prototype =
{
merge: function(args, oldTag)
{
if (oldTag)
this.tagName = oldTag.tagName;
this.context = oldTag ? oldTag.context : null;
this.subject = oldTag ? oldTag.subject : null;
this.attrs = oldTag ? copyObject(oldTag.attrs) : {};
this.classes = oldTag ? copyObject(oldTag.classes) : {};
this.props = oldTag ? copyObject(oldTag.props) : null;
this.listeners = oldTag ? copyArray(oldTag.listeners) : null;
this.children = oldTag ? copyArray(oldTag.children) : [];
this.vars = oldTag ? copyArray(oldTag.vars) : [];
var attrs = args.length ? args[0] : null;
var hasAttrs = typeof(attrs) == "object" && !isTag(attrs);
this.resources = {};
this.children = [];
if (domplate.topContext)
this.context = domplate.topContext;
if (args.length)
parseChildren(args, hasAttrs ? 1 : 0, this.vars, this.children);
if (hasAttrs)
this.parseAttrs(attrs);
return creator(this, DomplateTag);
},
parseAttrs: function(args)
{
DomplateDebug.startGroup('DomplateTag.parseAttrs',arguments);
for (var name in args)
{
DomplateDebug.logVar('name',name);
DomplateDebug.logVar('args[name]',args[name]);
var val = parseValue(args[name]);
readPartNames(val, this.vars);
if (name.indexOf("on") == 0)
{
var eventName = name.substr(2);
if (!this.listeners)
this.listeners = [];
this.listeners.push(eventName, val);
}
else if (name[0] == "_")
{
var propName = name.substr(1);
if (!this.props)
this.props = {};
this.props[propName] = val;
}
else if (name[0] == "$")
{
var className = name.substr(1);
if (!this.classes)
this.classes = {};
this.classes[className] = val;
}
else
{
if (name == "class" && this.attrs.hasOwnProperty(name) )
this.attrs[name] += " " + val;
else
this.attrs[name] = val;
}
}
DomplateDebug.endGroup();
},
compile: function()
{
DomplateDebug.startGroup(['DomplateTag.compile',this.tagName]);
if (this.renderMarkup) {
DomplateDebug.log('ALREADY COMPILED');
DomplateDebug.endGroup();
return;
}
if(this.subject._resources) {
this.resources = this.subject._resources();
}
this.compileMarkup();
this.compileDOM();
DomplateDebug.endGroup();
},
compileMarkup: function()
{
DomplateDebug.startGroup('DomplateTag.compileMarkup');
this.markupArgs = [];
var topBlock = [], topOuts = [], blocks = [], info = {args: this.markupArgs, argIndex: 0};
this.generateMarkup(topBlock, topOuts, blocks, info);
this.addCode(topBlock, topOuts, blocks);
var fnBlock = ['(function (__code__, __context__, __in__, __out__'];
for (var i = 0; i < info.argIndex; ++i)
fnBlock.push(', s', i);
fnBlock.push(') {');
fnBlock.push(' DomplateDebug.startGroup([\' .. Run Markup .. \',\''+this.tagName+'\'],arguments);');
fnBlock.push(' DomplateDebug.logJs(\'js\',\'__SELF__JS__\');');
if (this.subject)
fnBlock.push(' with (this) {');
if (this.context)
fnBlock.push(' with (__context__) {');
fnBlock.push(' with (__in__) {');
fnBlock.push.apply(fnBlock, blocks);
if (this.subject)
fnBlock.push(' }');
if (this.context)
fnBlock.push(' }');
fnBlock.push('DomplateDebug.endGroup();');
fnBlock.push('}})');
var self = this;
function __link__(tag, code, outputs, args)
{
if (!tag) {
DomplateDebug.logWarn('tag not defined');
return;
}
if (!tag.tag) {
DomplateDebug.logVar('tag', tag);
DomplateDebug.logWarn('tag.tag not defined');
return;
}
tag.tag.compile();
// merge resources from sub-tags
if(self.resources && tag.tag.resources && tag.tag.resources!==self.resources) {
for( var key in tag.tag.resources ) {
self.resources[key] = tag.tag.resources[key];
}
}
var tagOutputs = [];
var markupArgs = [code, (tag.tag.context)?tag.tag.context:null, args, tagOutputs];
markupArgs.push.apply(markupArgs, tag.tag.markupArgs);
tag.tag.renderMarkup.apply(tag.tag.subject, markupArgs);
outputs.push(tag);
outputs.push(tagOutputs);
}
function __escape__(value)
{
function replaceChars(ch)
{
switch (ch)
{
case "<":
return "<";
case ">":
return ">";
case "&":
return "&";
case "'":
return "'";
case '"':
return """;
}
return "?";
};
return String(value).replace(/[<>&"']/g, replaceChars);
}
function __loop__(iter, outputs, fn)
{
var iterOuts = [];
outputs.push(iterOuts);
if (iter instanceof Array)
iter = new ArrayIterator(iter);
try
{
while (1)
{
var value = iter.next();
var itemOuts = [0,0];
iterOuts.push(itemOuts);
fn.apply(this, [value, itemOuts]);
}
}
catch (exc)
{
if (exc != StopIteration)
throw exc;
}
}
function __if__(booleanVar, outputs, fn)
{
// "outputs" is what gets passed to the compiled DOM when it runs.
// It is used by the dom to make decisions as to how many times to
// run children for FOR loops etc ...
// For the IF feature we set a 1 or 0 depending on whether
// the sub template ran or not. If it did not run then no HTML
// markup was generated and accordingly the DOM elements should and
// can not be traversed.
var ifControl = [];
outputs.push(ifControl);
DomplateDebug.logVar('j .. booleanVar',booleanVar);
if(booleanVar) {
ifControl.push(1);
fn.apply(this, [ifControl]);
} else {
ifControl.push(0);
}
}
var js = fnBlock.join("");
DomplateDebug.logVar('js',js);
// Inject the compiled JS so we can view it later in the console when the code runs
js = js.replace('__SELF__JS__',js.replace(/\'/g,'\\\''));
//system.print(js,'JS');
this.renderMarkup = eval(js);
DomplateDebug.endGroup();
},
getVarNames: function(args)
{
if (this.vars)
args.push.apply(args, this.vars);
for (var i = 0; i < this.children.length; ++i)
{
var child = this.children[i];
if (isTag(child))
child.tag.getVarNames(args);
else if (child instanceof Parts)
{
for (var i = 0; i < child.parts.length; ++i)
{
if (child.parts[i] instanceof Variables)
{
var name = child.parts[i].names[0];
var names = name.split(".");
args.push(names[0]);
}
}
}
}
},
generateMarkup: function(topBlock, topOuts, blocks, info)
{
topBlock.push(',"<', this.tagName, '"');
for (var name in this.attrs)
{
if (name != "class")
{
var val = this.attrs[name];
topBlock.push(', " ', name, '=\\""');
addParts(val, ',', topBlock, info, true);
topBlock.push(', "\\""');
}
}
if (this.listeners)
{
for (var i = 0; i < this.listeners.length; i += 2)
readPartNames(this.listeners[i+1], topOuts);
}
if (this.props)
{
for (var name in this.props)
readPartNames(this.props[name], topOuts);
}
if ( this.attrs.hasOwnProperty("class") || this.classes)
{
topBlock.push(', " class=\\""');
if (this.attrs.hasOwnProperty("class"))
addParts(this.attrs["class"], ',', topBlock, info, true);
topBlock.push(', " "');
for (var name in this.classes)
{
topBlock.push(', (');
addParts(this.classes[name], '', topBlock, info);
topBlock.push(' ? "', name, '" + " " : "")');
}
topBlock.push(', "\\""');
}
if(this.tagName=="br") {
topBlock.push(',"/>"');
} else {
topBlock.push(',">"');
this.generateChildMarkup(topBlock, topOuts, blocks, info);
topBlock.push(',"</', this.tagName, '>"');
}
},
generateChildMarkup: function(topBlock, topOuts, blocks, info)
{
for (var i = 0; i < this.children.length; ++i)
{
var child = this.children[i];
if (isTag(child))
child.tag.generateMarkup(topBlock, topOuts, blocks, info);
else
addParts(child, ',', topBlock, info, true);
}
},
addCode: function(topBlock, topOuts, blocks)
{
if (topBlock.length)
blocks.push(' __code__.push(""', topBlock.join(""), ');');
if (topOuts.length)
blocks.push('__out__.push(', topOuts.join(","), ');');
topBlock.splice(0, topBlock.length);
topOuts.splice(0, topOuts.length);
},
addLocals: function(blocks)
{
var varNames = [];
this.getVarNames(varNames);
var map = {};
for (var i = 0; i < varNames.length; ++i)
{
var name = varNames[i];
if ( map.hasOwnProperty(name) )
continue;
map[name] = 1;
var names = name.split(".");
blocks.push('var ', names[0] + ' = ' + '__in__.' + names[0] + ';');
}
},
compileDOM: function()
{
DomplateDebug.startGroup('DomplateTag.compileDOM');
var path = [];
var blocks = [];
this.domArgs = [];
path.embedIndex = 0;
path.loopIndex = 0;
path.ifIndex = 0;
path.staticIndex = 0;
path.renderIndex = 0;
var nodeCount = this.generateDOM(path, blocks, this.domArgs);
var fnBlock = ['(function (root, context, o'];
for (var i = 0; i < path.staticIndex; ++i)
fnBlock.push(', ', 's'+i);
for (var i = 0; i < path.renderIndex; ++i)
fnBlock.push(', ', 'd'+i);
fnBlock.push(') {');
fnBlock.push(' DomplateDebug.startGroup([\' .. Run DOM .. \',\''+this.tagName+'\'],arguments);');
fnBlock.push(' DomplateDebug.logJs(\'js\',\'__SELF__JS__\');');
for (var i = 0; i < path.loopIndex; ++i)
fnBlock.push(' var l', i, ' = 0;');
for (var i = 0; i < path.ifIndex; ++i)
fnBlock.push(' var if_', i, ' = 0;');
for (var i = 0; i < path.embedIndex; ++i)
fnBlock.push(' var e', i, ' = 0;');
if (this.subject) {
fnBlock.push(' with (this) {');
}
if (this.context) {
fnBlock.push(' with (context) {');
fnBlock.push(' DomplateDebug.logVar(\'context\',context);');
}
fnBlock.push(blocks.join(""));
if (this.context)
fnBlock.push(' }');
if (this.subject)
fnBlock.push(' }');
fnBlock.push(' DomplateDebug.endGroup();');
fnBlock.push(' return ', nodeCount, ';');
fnBlock.push('})');
function __bind__(object, fn)
{
return function(event) { return fn.apply(object, [event]); }
}
function __link__(node, tag, args)
{
DomplateDebug.startGroup('__link__',arguments);
if (!tag) {
DomplateDebug.logWarn('tag not defined');
return;
}
if (!tag.tag) {
DomplateDebug.logVar('tag', tag);
DomplateDebug.logWarn('tag.tag not defined');
return;
}
tag.tag.compile();
var domArgs = [node, (tag.tag.context)?tag.tag.context:null, 0];
domArgs.push.apply(domArgs, tag.tag.domArgs);
domArgs.push.apply(domArgs, args);
var oo =tag.tag.renderDOM.apply(tag.tag.subject, domArgs);
DomplateDebug.endGroup();
return oo;
}
var self = this;
function __loop__(iter, fn)
{
DomplateDebug.startGroup('__loop__',arguments);
DomplateDebug.logVar('iter',iter);
DomplateDebug.logVar('fn',fn);
var nodeCount = 0;
for (var i = 0; i < iter.length; ++i)
{
iter[i][0] = i;
iter[i][1] = nodeCount;
nodeCount += fn.apply(this, iter[i]);
DomplateDebug.logVar(' .. nodeCount',nodeCount);
}
DomplateDebug.logVar('iter',iter);
DomplateDebug.endGroup();
return nodeCount;
}
function __if__(control, fn)
{
DomplateDebug.startGroup('__if__',arguments);
DomplateDebug.logVar('control', control);
DomplateDebug.logVar('fn',fn);
// Check the control structure to see if we should run the IF
if(control && control[0]) {
// Lets run it
// TODO: If in debug mode add info about the IF expression that caused the running
DomplateDebug.logInfo('Running IF');
fn.apply(this, [0,control[1]]);
} else {
// We need to skip it
// TODO: If in debug mode add info about the IF expression that caused the skip
DomplateDebug.logInfo('Skipping IF');
}
DomplateDebug.endGroup();
}
function __path__(parent, offset)
{
DomplateDebug.startGroup('__path__',arguments);
DomplateDebug.logVar('parent',parent);
var root = parent;
for (var i = 2; i < arguments.length; ++i)
{
var index = arguments[i];
if (i == 3)
index += offset;
if (index == -1) {
parent = parent.parentNode;
} else {
parent = parent.childNodes[index];
}
}
DomplateDebug.endGroup();
return parent;
}
var js = fnBlock.join("");
DomplateDebug.logVar('js',js);
// Inject the compiled JS so we can view it later in the console when the code runs
js = js.replace('__SELF__JS__',js.replace(/\'/g,'\\\''));
this.renderDOM = eval(js);
DomplateDebug.endGroup();
},
generateDOM: function(path, blocks, args)
{
DomplateDebug.startGroup(['DomplateTag.generateDOM',this.tagName],arguments);
if (this.listeners || this.props)
this.generateNodePath(path, blocks);
if (this.listeners)
{
for (var i = 0; i < this.listeners.length; i += 2)
{
var val = this.listeners[i+1];
var arg = generateArg(val, path, args);
blocks.push('node.addEventListener("', this.listeners[i], '", __bind__(this, ', arg, '), false);');
}
}
if (this.props)
{
for (var name in this.props)
{
var val = this.props[name];
var arg = generateArg(val, path, args);
blocks.push('node.', name, ' = ', arg, ';');
}
}
this.generateChildDOM(path, blocks, args);
DomplateDebug.endGroup();
return 1;
},
generateNodePath: function(path, blocks)
{
DomplateDebug.startGroup('DomplateTag.generateNodePath',arguments);
blocks.push(" node = __path__(root, o");
for (var i = 0; i < path.length; ++i)
blocks.push(",", path[i]);
blocks.push(");");
DomplateDebug.endGroup();
},
generateChildDOM: function(path, blocks, args)
{
path.push(0);
for (var i = 0; i < this.children.length; ++i)
{
var child = this.children[i];
if (isTag(child))
path[path.length-1] += '+' + child.tag.generateDOM(path, blocks, args);
else
path[path.length-1] += '+1';
}
path.pop();
}
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
DomplateEmbed.prototype = copyObject(DomplateTag.prototype,
{
merge: function(args, oldTag)
{
DomplateDebug.startGroup('DomplateEmbed.merge',arguments);
this.value = oldTag ? oldTag.value : parseValue(args[0]);
this.attrs = oldTag ? oldTag.attrs : {};
this.vars = oldTag ? copyArray(oldTag.vars) : [];
var attrs = args[1];
for (var name in attrs)
{
var val = parseValue(attrs[name]);
this.attrs[name] = val;
readPartNames(val, this.vars);
}
var retval = creator(this, DomplateEmbed);
DomplateDebug.endGroup();
return retval;
},
// Used for locales only
getVarNames: function(names)
{
if (this.value instanceof Parts)
names.push(this.value.parts[0].name);
if (this.vars)
names.push.apply(names, this.vars);
},
generateMarkup: function(topBlock, topOuts, blocks, info)
{
DomplateDebug.startGroup('DomplateEmbed.generateMarkup',arguments);
this.addCode(topBlock, topOuts, blocks);
blocks.push('__link__(');
addParts(this.value, '', blocks, info);
blocks.push(', __code__, __out__, {');
var lastName = null;
for (var name in this.attrs)
{
if (lastName)
blocks.push(',');
lastName = name;
var val = this.attrs[name];
blocks.push('"', name, '":');
addParts(val, '', blocks, info);
}
blocks.push('});');
//this.generateChildMarkup(topBlock, topOuts, blocks, info);
DomplateDebug.endGroup();
},
generateDOM: function(path, blocks, args)
{
DomplateDebug.startGroup('DomplateEmbed.generateDOM',arguments);
var embedName = 'e'+path.embedIndex++;
this.generateNodePath(path, blocks);
var valueName = 'd' + path.renderIndex++;
var argsName = 'd' + path.renderIndex++;
blocks.push(' ',embedName + ' = __link__(node, ', valueName, ', ', argsName, ');');
DomplateDebug.endGroup();
return embedName;
}
});
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
DomplateLoop.prototype = copyObject(DomplateTag.prototype,
{
merge: function(args, oldTag)
{
DomplateDebug.startGroup('DomplateLoop.merge',arguments);
this.varName = oldTag ? oldTag.varName : args[0];
this.iter = oldTag ? oldTag.iter : parseValue(args[1]);
this.vars = [];
this.children = oldTag ? copyArray(oldTag.children) : [];
var offset = Math.min(args.length, 2);
parseChildren(args, offset, this.vars, this.children);
var retval = creator(this, DomplateLoop);
DomplateDebug.endGroup();
return retval;
},
// Used for locales only
getVarNames: function(names)
{
if (this.iter instanceof Parts)
names.push(this.iter.parts[0].name);
DomplateTag.prototype.getVarNames.apply(this, [names]);
},
generateMarkup: function(topBlock, topOuts, blocks, info)
{
DomplateDebug.startGroup('DomplateLoop.generateMarkup',arguments);
this.addCode(topBlock, topOuts, blocks);
DomplateDebug.logVar('this.iter',this.iter);
// We are in a FOR loop and our this.iter property contains
// either a simple function name as a string or a Parts object
// with only ONE Variables object. There is only one variables object
// as the FOR argument can contain only ONE valid function callback
// with optional arguments or just one variable. Allowed arguments are
// func or $var or $var.sub or $var|func or $var1,$var2|func or $var|func1|func2 or $var1,$var2|func1|func2
var iterName;
if (this.iter instanceof Parts)
{
// We have a function with optional aruments or just one variable
var part = this.iter.parts[0];
// Join our function arguments or variables
// If the user has supplied multiple variables without a function
// this will create an invalid result and we should probably add an
// error message here or just take the first variable
iterName = part.names.join(',');
// Nest our functions
if (part.format)
{
DomplateDebug.logVar('part.format',part.format);
for (var i = 0; i < part.format.length; ++i)
iterName = part.format[i] + "(" + iterName + ")";
}
} else {
// We have just a simple function name without any arguments
iterName = this.iter;
}
DomplateDebug.logVar('iterName',iterName);
blocks.push(' __loop__.apply(this, [', iterName, ', __out__, function(', this.varName, ', __out__) {');
this.generateChildMarkup(topBlock, topOuts, blocks, info);
this.addCode(topBlock, topOuts, blocks);
blocks.push(' }]);');
DomplateDebug.endGroup();
},
generateDOM: function(path, blocks, args)
{
DomplateDebug.startGroup('DomplateLoop.generateDOM',arguments);
var iterName = 'd'+path.renderIndex++;
var counterName = 'i'+path.loopIndex;
var loopName = 'l'+path.loopIndex++;
if (!path.length)
path.push(-1, 0);
var preIndex = path.renderIndex;
path.renderIndex = 0;
var nodeCount = 0;
var subBlocks = [];
var basePath = path[path.length-1];
for (var i = 0; i < this.children.length; ++i)
{
path[path.length-1] = basePath+'+'+loopName+'+'+nodeCount;
var child = this.children[i];
if (isTag(child))
nodeCount += '+' + child.tag.generateDOM(path, subBlocks, args);
else