dojo_app/js/library/dijit/Declaration.js

define([
	"dojo/_base/array", // array.forEach array.map
	"dojo/aspect",	// aspect.after
	"dojo/_base/declare", // declare
	"dojo/_base/lang", // lang.getObject
	"dojo/parser", // parser._functionFromScript
	"dojo/query", // query
	"./_Widget",
	"./_TemplatedMixin",
	"./_WidgetsInTemplateMixin",
	"dojo/NodeList-dom"
], function(array, aspect, declare, lang, parser, query, _Widget, _TemplatedMixin, _WidgetsInTemplateMixin){

	// module:
	//		dijit/Declaration

	return declare("dijit.Declaration", _Widget, {
		// summary:
		//		The Declaration widget allows a developer to declare new widget
		//		classes directly from a snippet of markup.

		// _noScript: [private] Boolean
		//		Flag to parser to leave alone the script tags contained inside of me
		_noScript: true,

		// stopParser: [private] Boolean
		//		Flag to parser to not try and parse widgets declared inside of me
		stopParser: true,

		// widgetClass: [const] String
		//		Name of class being declared, ex: "acme.myWidget"
		widgetClass: "",

		// propList: [const] Object
		//		Set of attributes for this widget along with default values, ex:
		//		{delay: 100, title: "hello world"}
		defaults: null,

		// mixins: [const] String[]
		//		List containing the prototype for this widget, and also any mixins,
		//		ex: ["dijit._Widget", "dijit._Container"]
		mixins: [],

		buildRendering: function(){
			var src = this.srcNodeRef.parentNode.removeChild(this.srcNodeRef),
				methods = query("> script[type='dojo/method']", src).orphan(),
				connects = query("> script[type='dojo/connect']", src).orphan(), // remove for 2.0
				aspects = query("> script[type='dojo/aspect']", src).orphan(),
				srcType = src.nodeName;

			var propList = this.defaults || {};

			// For all methods defined like <script type="dojo/method" data-dojo-event="foo">,
			// add that method to prototype.
			// If there's no "event" specified then it's code to run on instantiation,
			// so it becomes a connection to "postscript" (handled below).
			array.forEach(methods, function(s){
				var evt = s.getAttribute("event") || s.getAttribute("data-dojo-event"), // remove "event" for 2.0
					func = parser._functionFromScript(s, "data-dojo-");
				if(evt){
					propList[evt] = func;
				}else{
					aspects.push(s);
				}
			});

			// map array of strings like [ "dijit.form.Button" ] to array of mixin objects
			// (note that array.map(this.mixins, lang.getObject) doesn't work because it passes
			// a bogus third argument to getObject(), confusing it)
			if(this.mixins.length){
				this.mixins = array.map(this.mixins, function(name){ return lang.getObject(name); } );
			}else{
				this.mixins = [ _Widget, _TemplatedMixin, _WidgetsInTemplateMixin ];
			}

			propList._skipNodeCache = true;
			propList.templateString =
				"<"+srcType+" class='"+src.className+"'" +
				" data-dojo-attach-point='"+
					(src.getAttribute("data-dojo-attach-point") || src.getAttribute("dojoAttachPoint") || '')+
				"' data-dojo-attach-event='"+
					(src.getAttribute("data-dojo-attach-event") || src.getAttribute("dojoAttachEvent") || '')+
				"' >"+src.innerHTML.replace(/\%7B/g,"{").replace(/\%7D/g,"}")+"</"+srcType+">";

			// create the new widget class
			var wc = declare(
				this.widgetClass,
				this.mixins,
				propList
			);

			// Handle <script> blocks of form:
			//		<script type="dojo/aspect" data-dojo-advice="after" data-dojo-method="foo">
			// and
			//		<script type="dojo/method">
			// (Note that the second one is just shorthand for a dojo/aspect to postscript)
			// Since this is a connect in the declaration, we are actually connection to the method
			// in the _prototype_.
			array.forEach(aspects, function(s){
				var advice = s.getAttribute("data-dojo-advice") || "after",
					method = s.getAttribute("data-dojo-method") || "postscript",
					func = parser._functionFromScript(s);
				aspect.after(wc.prototype, method, func, true);
			});

			// Handle legacy <script type="dojo/connect" data-dojo-event="foo">.
			// Remove for 2.0.
			array.forEach(connects, function(s){
				var evt = s.getAttribute("event") || s.getAttribute("data-dojo-event"),
					func = parser._functionFromScript(s);
				aspect.after(wc.prototype, evt, func, true);
			});
		}
	});
});