dojo.provide("dijit._editor.RichText");

dojo.require("dijit._Widget");
dojo.require("dijit._editor.selection");
dojo.require("dijit._editor.range");
dojo.require("dijit._editor.html");
dojo.require("dojo.i18n");
dojo.requireLocalization("dijit.form", "Textarea");

// used to restore content when user leaves this page then comes back
// but do not try doing dojo.doc.write if we are using xd loading.
// dojo.doc.write will only work if RichText.js is included in the dojo.js
// file. If it is included in dojo.js and you want to allow rich text saving
// for back/forward actions, then set dojo.config.allowXdRichTextSave = true.
if(!dojo.config["useXDomain"] || dojo.config["allowXdRichTextSave"]){
	if(dojo._postLoad){
		(function(){
			var savetextarea = dojo.doc.createElement('textarea');
			savetextarea.id = dijit._scopeName + "._editor.RichText.savedContent";
			dojo.style(savetextarea, {
				display:'none',
				position:'absolute',
				top:"-100px",
				height:"3px",
				width:"3px"
			});
			dojo.body().appendChild(savetextarea);
		})();
	}else{
		//dojo.body() is not available before onLoad is fired
		try {
			dojo.doc.write('<textarea id="' + dijit._scopeName + '._editor.RichText.savedContent" ' +
				'style="display:none;position:absolute;top:-100px;left:-100px;height:3px;width:3px;overflow:hidden;"></textarea>');
		}catch(e){ }
	}
}

dojo.declare("dijit._editor.RichText", dijit._Widget, {
	constructor: function(params){
		// summary:
		//		dijit._editor.RichText is the core of dijit.Editor, which provides basic
		//		WYSIWYG editing features.
		//
		// description:
		//		dijit._editor.RichText is the core of dijit.Editor, which provides basic
		//		WYSIWYG editing features. It also encapsulates the differences
		//		of different js engines for various browsers.  Do not use this widget
		//		with an HTML &lt;TEXTAREA&gt; tag, since the browser unescapes XML escape characters,
		//		like &lt;.  This can have unexpected behavior and lead to security issues
		//		such as scripting attacks.
		//
		// tags:
		//		private

		// contentPreFilters: Function(String)[]
		//		Pre content filter function register array.
		//		these filters will be executed before the actual
		//		editing area gets the html content.
		this.contentPreFilters = [];

		// contentPostFilters: Function(String)[]
		//		post content filter function register array.
		//		These will be used on the resulting html
		//		from contentDomPostFilters. The resulting
		//		content is the final html (returned by getValue()).
		this.contentPostFilters = [];

		// contentDomPreFilters: Function(DomNode)[]
		//		Pre content dom filter function register array.
		//		These filters are applied after the result from
		//		contentPreFilters are set to the editing area.
		this.contentDomPreFilters = [];

		// contentDomPostFilters: Function(DomNode)[]
		//		Post content dom filter function register array.
		//		These filters are executed on the editing area dom.
		//		The result from these will be passed to contentPostFilters.
		this.contentDomPostFilters = [];

		// editingAreaStyleSheets: dojo._URL[]
		//		array to store all the stylesheets applied to the editing area
		this.editingAreaStyleSheets=[];

		this._keyHandlers = {};
		this.contentPreFilters.push(dojo.hitch(this, "_preFixUrlAttributes"));
		if(dojo.isMoz){
			this.contentPreFilters.push(this._fixContentForMoz);
			this.contentPostFilters.push(this._removeMozBogus);
		}
		if(dojo.isSafari){
			this.contentPostFilters.push(this._removeSafariBogus);
		}
		//this.contentDomPostFilters.push(this._postDomFixUrlAttributes);

		this.onLoadDeferred = new dojo.Deferred();
	},

	// inheritWidth: Boolean
	//		whether to inherit the parent's width or simply use 100%
	inheritWidth: false,

	// focusOnLoad: [deprecated] Boolean
	//		Focus into this widget when the page is loaded
	focusOnLoad: false,

	// name: String?
	//		Specifies the name of a (hidden) <textarea> node on the page that's used to save
	//		the editor content on page leave.   Used to restore editor contents after navigating
	//		to a new page and then hitting the back button.
	name: "",

	// styleSheets: [const] String
	//		semicolon (";") separated list of css files for the editing area
	styleSheets: "",

	// _content: [private] String
	//		temporary content storage
	_content: "",

	// height: String
	//		Set height to fix the editor at a specific height, with scrolling.
	//		By default, this is 300px.  If you want to have the editor always
	//		resizes to accommodate the content, use AlwaysShowToolbar plugin
	//		and set height="".  If this editor is used within a layout widget,
	//		set height="100%".
	height: "300px",

	// minHeight: String
	//		The minimum height that the editor should have.
	minHeight: "1em",
	
	// isClosed: [private] Boolean
	isClosed: true,

	// isLoaded: [private] Boolean
	isLoaded: false,

	// _SEPARATOR: [private] String
	//		Used to concat contents from multiple editors into a single string,
	//		so they can be saved into a single <textarea> node.  See "name" attribute.
	_SEPARATOR: "@@**%%__RICHTEXTBOUNDRY__%%**@@",

	// onLoadDeferred: [protected] dojo.Deferred
	//		Deferred which is fired when the editor finishes loading
	onLoadDeferred: null,
	
	// isTabIndent: Boolean
	//		Make tab key and shift-tab indent and outdent rather than navigating.
	//		Caution: sing this makes web pages inaccessible to users unable to use a mouse.
	isTabIndent: false,

	// disableSpellCheck: [const] Boolean
	//		When true, disables the browser's native spell checking, if supported.
	//		Works only in Firefox.
	disableSpellCheck: false,

	postCreate: function(){
		if("textarea" == this.domNode.tagName.toLowerCase()){
			console.warn("RichText should not be used with the TEXTAREA tag.  See dijit._editor.RichText docs.");
		}
		dojo.publish(dijit._scopeName + "._editor.RichText::init", [this]);
		this.open();
		this.setupDefaultShortcuts();
	},

	setupDefaultShortcuts: function(){
		// summary:
		//		Add some default key handlers
		// description:
		// 		Overwrite this to setup your own handlers. The default
		// 		implementation does not use Editor commands, but directly
		//		executes the builtin commands within the underlying browser
		//		support.
		// tags:
		//		protected
		var exec = dojo.hitch(this, function(cmd, arg){
			return function(){
				return !this.execCommand(cmd,arg);
			};
		});

		var ctrlKeyHandlers = { 
			b: exec("bold"),
			i: exec("italic"),
			u: exec("underline"),
			a: exec("selectall"),
			s: function(){ this.save(true); },
			m: function(){ this.isTabIndent = !this.isTabIndent; },

			"1": exec("formatblock", "h1"),
			"2": exec("formatblock", "h2"),
			"3": exec("formatblock", "h3"),
			"4": exec("formatblock", "h4"),

			"\\": exec("insertunorderedlist")
		};

		if(!dojo.isIE){
			ctrlKeyHandlers.Z = exec("redo"); //FIXME: undo?
		}

		for(var key in ctrlKeyHandlers){
			this.addKeyHandler(key, true, false, ctrlKeyHandlers[key]);
		}
	},

	// events: [private] String[]
	//		 events which should be connected to the underlying editing area
	events: ["onKeyPress", "onKeyDown", "onKeyUp", "onClick"],

	// captureEvents: [deprecated] String[]
	//		 Events which should be connected to the underlying editing
	//		 area, events in this array will be addListener with
	//		 capture=true.
	// TODO: looking at the code I don't see any distinction between events and captureEvents,
	// so get rid of this for 2.0 if not sooner
	captureEvents: [],

	_editorCommandsLocalized: false,
	_localizeEditorCommands: function(){
		// summary:
		//		When IE is running in a non-English locale, the API actually changes,
		//		so that we have to say (for example) danraku instead of p (for paragraph).
		//		Handle that here.
		// tags:
		//		private
		if(this._editorCommandsLocalized){
			return;
		}
		this._editorCommandsLocalized = true;

		//in IE, names for blockformat is locale dependent, so we cache the values here

		//if the normal way fails, we try the hard way to get the list

		//do not use _cacheLocalBlockFormatNames here, as it will
		//trigger security warning in IE7

		//put p after div, so if IE returns Normal, we show it as paragraph
		//We can distinguish p and div if IE returns Normal, however, in order to detect that,
		//we have to call this.document.selection.createRange().parentElement() or such, which
		//could slow things down. Leave it as it is for now
		var formats = ['div', 'p', 'pre', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'ol', 'ul', 'address'];
		var localhtml = "", format, i=0;
		while((format=formats[i++])){
			//append a <br> after each element to separate the elements more reliably
			if(format.charAt(1) != 'l'){
				localhtml += "<"+format+"><span>content</span></"+format+"><br/>";
			}else{
				localhtml += "<"+format+"><li>content</li></"+format+"><br/>";
			}
		}
		//queryCommandValue returns empty if we hide editNode, so move it out of screen temporary
		var div = dojo.doc.createElement('div');
		dojo.style(div, {
			position: "absolute",
			top: "-2000px"
		});
		dojo.doc.body.appendChild(div);
		div.innerHTML = localhtml;
		var node = div.firstChild;
		while(node){
			dijit._editor.selection.selectElement(node.firstChild);
			dojo.withGlobal(this.window, "selectElement", dijit._editor.selection, [node.firstChild]);
			var nativename = node.tagName.toLowerCase();
			this._local2NativeFormatNames[nativename] = document.queryCommandValue("formatblock");
			//this.queryCommandValue("formatblock");
			this._native2LocalFormatNames[this._local2NativeFormatNames[nativename]] = nativename;
			node = node.nextSibling.nextSibling;
		}
		dojo.body().removeChild(div);
	},

	open: function(/*DomNode?*/ element){
		//	summary:
		//		Transforms the node referenced in this.domNode into a rich text editing
		//		node. 
		//	description:
		//		Sets up the editing area asynchronously. This will result in
		//		the creation and replacement with an <iframe> if
		//		designMode(FF)/contentEditable(IE) is used and stylesheets are
		//		specified, if we're in a browser that doesn't support
		//		contentEditable.
		//
		//		A dojo.Deferred object is created at this.onLoadDeferred, and
		//		users may attach to it to be informed when the rich-text area
		//		initialization is finalized.
		// tags:
		//		private

		if(!this.onLoadDeferred || this.onLoadDeferred.fired >= 0){
			this.onLoadDeferred = new dojo.Deferred();
		}

		if(!this.isClosed){ this.close(); }
		dojo.publish(dijit._scopeName + "._editor.RichText::open", [ this ]);

		this._content = "";
		if(arguments.length == 1 && element.nodeName){ // else unchanged
			this.domNode = element; 
		} 

		var dn = this.domNode;

		var html;
		if(dn.nodeName && dn.nodeName.toLowerCase() == "textarea"){
			// if we were created from a textarea, then we need to create a
			// new editing harness node.
			var ta = (this.textarea = dn);
			this.name = ta.name;
			html = this._preFilterContent(ta.value);
			dn = this.domNode = dojo.doc.createElement("div");
			dn.setAttribute('widgetId', this.id);
			ta.removeAttribute('widgetId');
			dn.cssText = ta.cssText;
			dn.className += " " + ta.className;
			dojo.place(dn, ta, "before");
			var tmpFunc = dojo.hitch(this, function(){
				//some browsers refuse to submit display=none textarea, so
				//move the textarea out of screen instead
				dojo.style(ta, {
					display: "block",
					position: "absolute",
					top: "-1000px"
				});

				if(dojo.isIE){ //nasty IE bug: abnormal formatting if overflow is not hidden
					var s = ta.style;
					this.__overflow = s.overflow;
					s.overflow = "hidden";
				}
			});
			if(dojo.isIE){
				setTimeout(tmpFunc, 10);
			}else{
				tmpFunc();
			}

			// this.domNode.innerHTML = html;

			if(ta.form){
				dojo.connect(ta.form, "onsubmit", this, function(){
					// FIXME: should we be calling close() here instead?
					ta.value = this.getValue();
				});
			}
		}else{
			html = this._preFilterContent(dijit._editor.getChildrenHtml(dn));
			dn.innerHTML = "";
		}

		var content = dojo.contentBox(dn);
		// var content = dojo.contentBox(this.srcNodeRef);
		this._oldHeight = content.h;
		this._oldWidth = content.w;

		this.savedContent = html;

		// If we're a list item we have to put in a blank line to force the
		// bullet to nicely align at the top of text
		if(dn.nodeName && dn.nodeName == "LI"){
			dn.innerHTML = " <br>";
		}

		this.editingArea = dn.ownerDocument.createElement("div");
		dn.appendChild(this.editingArea);

		if(this.name != "" && (!dojo.config["useXDomain"] || dojo.config["allowXdRichTextSave"])){
			var saveTextarea = dojo.byId(dijit._scopeName + "._editor.RichText.savedContent");
			if(saveTextarea.value != ""){
				var datas = saveTextarea.value.split(this._SEPARATOR), i=0, dat;
				while((dat=datas[i++])){
					var data = dat.split(":");
					if(data[0] == this.name){
						html = data[1];
						datas.splice(i, 1);
						break;
					}
				}
			}

			// FIXME: need to do something different for Opera/Safari
			this.connect(window, "onbeforeunload", "_saveContent");
			// dojo.connect(window, "onunload", this, "_saveContent");
		}

		this.isClosed = false;

		// Safari's selections go all out of whack if we do it inline,
		// so for now IE is our only hero
		//if(typeof dojo.doc.body.contentEditable != "undefined")
		if(dojo.isIE || dojo.isWebKit || dojo.isOpera){
			// In 0.4, this was the contentEditable code path, but now it creates an iframe, same as for Firefox.
			// However, firefox's iframe is handled by _drawIframe() rather than this code for some reason :-(
			var ifr = (this.editorObject = this.iframe = dojo.doc.createElement('iframe'));
			ifr.id = this.id+"_iframe";
			this._iframeSrc = this._getIframeDocTxt();
			ifr.style.border = "none";
			ifr.style.width = "100%";
			if(this._layoutMode){
				// iframe should be 100% height, thus getting it's height from surrounding
				// <div> (which has the correct height set by Editor
				ifr.style.height = "100%";
			}else{
				if(dojo.isIE >= 7){
					if(this.height){
						ifr.style.height = this.height;
					}
					if(this.minHeight){
						ifr.style.minHeight = this.minHeight;
					}
				}else{
					ifr.style.height = this.height ? this.height : this.minHeight;
				}
			}
			ifr.frameBorder = 0;
			// ifr.style.scrolling = this.height ? "auto" : "vertical";
			ifr._loadFunc = dojo.hitch( this, function(win){
				this.window = win;
				this.document = this.window.document;

				if(dojo.isIE){
					this._localizeEditorCommands();
				}

				this.onLoad(html);
				this.savedContent = this.getValue(true);
			});
			var s = 'javascript:parent.' + dijit._scopeName + '.byId("'+this.id+'")._iframeSrc';
			ifr.setAttribute('src', s);
			this.editingArea.appendChild(ifr);
			if(dojo.isWebKit){ // Safari seems to always append iframe with src=about:blank
				setTimeout(function(){ifr.setAttribute('src', s)},0);
			}
		}else{
			// Firefox code path
			this._drawIframe(html);
			this.savedContent = this.getValue(true);
		}
		
		// TODO: this is a guess at the default line-height, kinda works
		if(dn.nodeName == "LI"){
			dn.lastChild.style.marginTop = "-1.2em";
		}

		if(this.domNode.nodeName == "LI"){ this.domNode.lastChild.style.marginTop = "-1.2em"; }
		dojo.addClass(this.domNode, "RichTextEditable");
	},

	//static cache variables shared among all instance of this class
	_local2NativeFormatNames: {},
	_native2LocalFormatNames: {},
	_localizedIframeTitles: null,

	_getIframeDocTxt: function(){
		// summary: 
		//              Generates the boilerplate text of the document inside the iframe (ie, <html><head>...</head><body/></html>). 
		//              Editor content (if not blank) should be added afterwards. 
		// tags: 
		//              private 
		var _cs = dojo.getComputedStyle(this.domNode);
		// The contents inside of <body>.  Usually this is blank (set later via a call 
		// to setValue(), but for some reason we need an extra <div> on IE (TODOC) 
		var html = ""; 		
		if(dojo.isIE || (!this.height && !dojo.isMoz)){
			html="<div>"+html+"</div>";
		}
		var font = [ _cs.fontWeight, _cs.fontSize, _cs.fontFamily ].join(" ");
		
		// line height is tricky - applying a units value will mess things up.
		// if we can't get a non-units value, bail out.
		var lineHeight = _cs.lineHeight;
		if(lineHeight.indexOf("px") >= 0){
			lineHeight = parseFloat(lineHeight)/parseFloat(_cs.fontSize);
			// console.debug(lineHeight);
		}else if(lineHeight.indexOf("em")>=0){
			lineHeight = parseFloat(lineHeight);
		}else{
			lineHeight = "1.0";
		}
		var userStyle = "";
		this.style.replace(/(^|;)(line-|font-?)[^;]+/g, function(match){ userStyle += match.replace(/^;/g,"") + ';' });

		/*
		 * On IE the iframe needs to have the same codepage as the main page does, or the
		 * src=javascript:..._iframeSrc won't handle non-ascii characters correctly
		 */
		var d = dojo.doc;
		return [
			this.isLeftToRight() ? "<html><head>" : "<html dir='rtl'><head>",
			(dojo.isMoz ? "<title>" + this._localizedIframeTitles.iframeEditTitle + "</title>" : ""),
			"<meta http-equiv='Content-Type' content='text/html;'>",
			"<style>",
			"body,html {",
			"\tbackground:transparent;",
			"\tpadding: 1em 0 0 0;",
			"\tmargin: -1em 0 0 0;", // remove extraneous vertical scrollbar on safari and firefox
			"}",
			// TODO: left positioning will cause contents to disappear out of view
			//	   if it gets too wide for the visible area
			"body{",
			"\ttop:0px; left:0px; right:0px;",
			"\tfont:", font, ";",
				((this.height||dojo.isOpera) ? "" : "position: fixed;"),
			// FIXME: IE 6 won't understand min-height?
			"\tmin-height:", this.minHeight, ";",
			"\tline-height:", lineHeight,
			"}",
			"p{ margin: 1em 0 !important; }",
			(this.height ? // height:auto undoes the height:100%
				"" : "body,html{overflow-y:hidden;/*for IE*/} body > div {overflow-x:auto;/*FF:horizontal scrollbar*/ overflow-y:hidden;/*safari*/ min-height:"+this.minHeight+";/*safari*/}"
			),
			"li > ul:-moz-first-node, li > ol:-moz-first-node{ padding-top: 1.2em; } ",
			"li{ min-height:1.2em; }",
			"</style>",
			this._applyEditingAreaStyleSheets(),
			"</head><body onload='frameElement._loadFunc(window,document)' style='"+userStyle+"'>", html, "</body></html>" 
		].join(""); // String
	},

	_drawIframe: function(/*String*/ html){
		// summary:
		//		Draws an iFrame using the existing one if one exists.
		//		Used by Firefox only.  See open() for code for other browsers.
		// tags:
		//		private

		if(!this.iframe){
			var ifr = (this.iframe = dojo.doc.createElement("iframe"));
			ifr.id=this.id+"_iframe";
			// this.iframe.src = "about:blank";
			// dojo.doc.body.appendChild(this.iframe);
			// console.debug(this.iframe.contentDocument.open());
			// dojo.body().appendChild(this.iframe);
			var ifrs = ifr.style;
			// ifrs.border = "1px solid black";
			ifrs.border = "none";
			ifrs.lineHeight = "0"; // squash line height
			ifrs.verticalAlign = "bottom";
			// ifrs.scrolling = this.height ? "auto" : "vertical";
			this.editorObject = this.iframe;
			// get screen reader text for mozilla here, too
			this._localizedIframeTitles = dojo.i18n.getLocalization("dijit.form", "Textarea");
			// need to find any associated label element and update iframe document title
			var label=dojo.query('label[for="'+this.id+'"]');
			if(label.length){
				this._localizedIframeTitles.iframeEditTitle = label[0].innerHTML + " " + this._localizedIframeTitles.iframeEditTitle;
			}
			ifr._loadFunc = function(win){}; // TODO: drawIframe should be refactored to use this event handler instead of janky setTimeout loops
		}
		// opera likes this to be outside the with block
		//	this.iframe.src = "javascript:void(0)";//dojo.uri.dojoUri("src/widget/templates/richtextframe.html") + ((dojo.doc.domain != currentDomain) ? ("#"+dojo.doc.domain) : "");
		this.iframe.style.width = this.inheritWidth ? this._oldWidth : "100%";

		if(this._layoutMode){
			// iframe should be 100% height, thus getting it's height from surrounding
			// <div> (which has the correct height set by Editor
			this.iframe.style.height = "100%";
		}else{
			if(this.height){
				this.iframe.style.height = this.height;
			}else{
				this.iframe.height = this._oldHeight;
			}
		}

		var tmpContent;
		if(this.textarea){
			tmpContent = this.srcNodeRef;
		}else{
			tmpContent = dojo.doc.createElement('div');
			tmpContent.style.display="none";
			tmpContent.innerHTML = html;
			//append tmpContent to under the current domNode so that the margin
			//calculation below is correct
			this.editingArea.appendChild(tmpContent);
		}
		this.editingArea.appendChild(this.iframe);

		//do we want to show the content before the editing area finish loading here?
		//if external style sheets are used for the editing area, the appearance now
		//and after loading of the editing area won't be the same (and padding/margin
		//calculation above may not be accurate)
		//	tmpContent.style.display = "none";
		//	this.editingArea.appendChild(this.iframe);


		// now we wait for the iframe to load. Janky hack!
		var ifrFunc = dojo.hitch(this, function(){
			if(!this.editNode){
				// Iframe hasn't been loaded yet.
				// First deal w/the document to be available (may have to wait for it)
				if(!this.document){
					try{
						if(this.iframe.contentWindow){
							this.window = this.iframe.contentWindow;
							this.document = this.iframe.contentWindow.document
						}else if(this.iframe.contentDocument){
							// for opera
							// TODO: this method is only being called for FF2; can we remove this?
							this.window = this.iframe.contentDocument.window;
							this.document = this.iframe.contentDocument;
						}
					}catch(e){}
					if(!this.document){
						setTimeout(ifrFunc,50);
						return;
					}
					// note that on Safari lower than 420+, we have to get the iframe
					// by ID in order to get something w/ a contentDocument property
					var contentDoc = this.document;
					contentDoc.open();
					if(dojo.isAIR){
						contentDoc.body.innerHTML = html;
					}else{
						contentDoc.write(this._getIframeDocTxt());
					}
					contentDoc.close();
					
					dojo.destroy(tmpContent);
				}

				// Wait for body to be available
				// Writing into contentDoc (above) can make <body> temporarily unavailable, may have to delay again
				if(!this.document.body){
					//console.debug("waiting for iframe body...");
					setTimeout(ifrFunc,50);
					return;
				}
				this.onLoad(html);
			}else{
				// Iframe is already loaded, we are just switching the content
				dojo.destroy(tmpContent);
				this.editNode.innerHTML = html;
				this.onDisplayChanged();
			}
		});

		ifrFunc();
	},

	_applyEditingAreaStyleSheets: function(){
		// summary:
		//		apply the specified css files in styleSheets
		// tags:
		//		private
		var files = [];
		if(this.styleSheets){
			files = this.styleSheets.split(';');
			this.styleSheets = '';
		}

		//empty this.editingAreaStyleSheets here, as it will be filled in addStyleSheet
		files = files.concat(this.editingAreaStyleSheets);
		this.editingAreaStyleSheets = [];

		var text='', i=0, url;
		while((url=files[i++])){
			var abstring = (new dojo._Url(dojo.global.location, url)).toString();
			this.editingAreaStyleSheets.push(abstring);
			text += '<link rel="stylesheet" type="text/css" href="'+abstring+'"/>'
		}
		return text;
	},

	addStyleSheet: function(/*dojo._Url*/ uri){
		// summary:
		//		add an external stylesheet for the editing area
		// uri:
		//		A dojo.uri.Uri pointing to the url of the external css file
		var url=uri.toString();

		//if uri is relative, then convert it to absolute so that it can be resolved correctly in iframe
		if(url.charAt(0) == '.' || (url.charAt(0) != '/' && !uri.host)){
			url = (new dojo._Url(dojo.global.location, url)).toString();
		}

		if(dojo.indexOf(this.editingAreaStyleSheets, url) > -1){
//			console.debug("dijit._editor.RichText.addStyleSheet: Style sheet "+url+" is already applied");
			return;
		}

		this.editingAreaStyleSheets.push(url);
		if(this.document.createStyleSheet){ //IE
			this.document.createStyleSheet(url);
		}else{ //other browser
			var head = this.document.getElementsByTagName("head")[0];
			var stylesheet = this.document.createElement("link");
			stylesheet.rel="stylesheet";
			stylesheet.type="text/css";
			stylesheet.href=url;
			head.appendChild(stylesheet);
		}
	},

	removeStyleSheet: function(/*dojo._Url*/ uri){
		// summary:
		//		remove an external stylesheet for the editing area
		var url=uri.toString();
		//if uri is relative, then convert it to absolute so that it can be resolved correctly in iframe
		if(url.charAt(0) == '.' || (url.charAt(0) != '/' && !uri.host)){
			url = (new dojo._Url(dojo.global.location, url)).toString();
		}
		var index = dojo.indexOf(this.editingAreaStyleSheets, url);
		if(index == -1){
//			console.debug("dijit._editor.RichText.removeStyleSheet: Style sheet "+url+" has not been applied");
			return;
		}
		delete this.editingAreaStyleSheets[index];
		dojo.withGlobal(this.window,'query', dojo, ['link:[href="'+url+'"]']).orphan()
	},

	// disabled: Boolean
	// 		The editor is disabled; the text cannot be changed.
	disabled: false,

	_mozSettingProps: {'styleWithCSS':false},
	_setDisabledAttr: function(/*Boolean*/ value){
		this.disabled = value;
		if(!this.isLoaded){ return; } // this method requires init to be complete
		value = !!value;
		if(dojo.isIE || dojo.isWebKit || dojo.isOpera){
			var preventIEfocus = dojo.isIE && (this.isLoaded || !this.focusOnLoad);
			if(preventIEfocus){ this.editNode.unselectable = "on"; }
			this.editNode.contentEditable = !value;
			if(preventIEfocus){
				var _this = this;
				setTimeout(function(){ _this.editNode.unselectable = "off"; }, 0);
			}
		}else{ //moz
			try{
				this.document.designMode=(value?'off':'on');
			}catch(e){ return; } // ! _disabledOK
			if(!value && this._mozSettingProps){
				var ps = this._mozSettingProps;
				for(var n in ps){
					if(ps.hasOwnProperty(n)){
						try{
							this.document.execCommand(n,false,ps[n]);
						}catch(e){}
					}
				}
			}
//			this.document.execCommand('contentReadOnly', false, value);
//				if(value){
//					this.blur(); //to remove the blinking caret
//				}
		}
		this._disabledOK = true;
	},

/* Event handlers
 *****************/

	// TODO: _isResized seems to be unused anywhere; remove for 2.0
	_isResized: function(){ return false; },

	onLoad: function(/* String */ html){
		// summary: 
		//		Handler after the iframe finishes loading. 
		// html: String 
		//		Editor contents should be set to this value 
		// tags: 
		//		protected
 		if(!this.window.__registeredWindow){
			this.window.__registeredWindow = true;
			dijit.registerIframe(this.iframe);
		}
		if(!dojo.isIE && (this.height || dojo.isMoz)){
			this.editNode=this.document.body;
		}else{
			this.editNode=this.document.body.firstChild;
			var _this = this;
			if(dojo.isIE){ // #4996 IE wants to focus the BODY tag
				var tabStop = (this.tabStop = dojo.doc.createElement('<div tabIndex=-1>'));
				this.editingArea.appendChild(tabStop);
				this.iframe.onfocus = function(){ _this.editNode.setActive(); }
			}
		}
		this.focusNode = this.editNode; // for InlineEditBox

		this._preDomFilterContent(this.editNode);

		var events = this.events.concat(this.captureEvents);
		var ap = this.iframe ? this.document : this.editNode;
		dojo.forEach(events, function(item){
			this.connect(ap, item.toLowerCase(), item);
		}, this);

		if(dojo.isIE){ // IE contentEditable
			// give the node Layout on IE
			this.connect(this.document, "onmousedown", "_onIEMouseDown"); // #4996 fix focus
			this.editNode.style.zoom = 1.0;
		}

		if(dojo.isWebKit){ 
			//WebKit sometimes doesn't fire right on selections, so the toolbar
			//doesn't update right.  Therefore, help it out a bit with an additional
			//listener.  A mouse up will typically indicate a display change, so fire this
			//and get the toolbar to adapt.  Reference: #9532 
			this._webkitListener = this.connect(this.document, "onmouseup", "onDisplayChanged");
		}

		this.isLoaded = true;

		this.attr('disabled', this.disabled); // initialize content to editable (or not)

		this.setValue(html); 

		if(this.onLoadDeferred){
			this.onLoadDeferred.callback(true);
		}

		if(this.focusOnLoad){
			// after the document loads, then set focus after updateInterval expires so that 
			// onNormalizedDisplayChanged has run to avoid input caret issues
			dojo.addOnLoad(dojo.hitch(this, function(){ setTimeout(dojo.hitch(this, "focus"), this.updateInterval) }));
		}
		this.onDisplayChanged();
	},

	onKeyDown: function(/* Event */ e){
		// summary:
		//		Handler for onkeydown event
		// tags:
		//		protected

		// we need this event at the moment to get the events from control keys
		// such as the backspace. It might be possible to add this to Dojo, so that
		// keyPress events can be emulated by the keyDown and keyUp detection.
		
		if(e.keyCode === dojo.keys.TAB && this.isTabIndent ){
			dojo.stopEvent(e); //prevent tab from moving focus out of editor

			// FIXME: this is a poor-man's indent/outdent. It would be
			// better if it added 4 "&nbsp;" chars in an undoable way.
			// Unfortunately pasteHTML does not prove to be undoable
			if(this.queryCommandEnabled((e.shiftKey ? "outdent" : "indent"))){
				this.execCommand((e.shiftKey ? "outdent" : "indent"));
			}			
		}
		if(dojo.isIE){
			if(e.keyCode == dojo.keys.TAB && !this.isTabIndent){
				if(e.shiftKey && !e.ctrlKey && !e.altKey){
					// focus the BODY so the browser will tab away from it instead
					this.iframe.focus();
				}else if(!e.shiftKey && !e.ctrlKey && !e.altKey){
					// focus the BODY so the browser will tab away from it instead
					this.tabStop.focus();
				}
			}else if(e.keyCode === dojo.keys.BACKSPACE && this.document.selection.type === "Control"){
				// IE has a bug where if a non-text object is selected in the editor,
				// hitting backspace would act as if the browser's back button was
				// clicked instead of deleting the object. see #1069
				dojo.stopEvent(e);
				this.execCommand("delete");
			}else if((65 <= e.keyCode&&e.keyCode <= 90) ||
				(e.keyCode>=37&&e.keyCode<=40) // FIXME: get this from connect() instead!
			){ //arrow keys
				e.charCode = e.keyCode;
				this.onKeyPress(e);
			}
		}else if(dojo.isMoz  && !this.isTabIndent){
			if(e.keyCode == dojo.keys.TAB && !e.shiftKey && !e.ctrlKey && !e.altKey && this.iframe){
				// update iframe document title for screen reader
				var titleObj = dojo.isFF<3 ? this.iframe.contentDocument : this.iframe;
			 	titleObj.title = this._localizedIframeTitles.iframeFocusTitle;
				// Place focus on the iframe. A subsequent tab or shift tab will put focus
				// on the correct control.
				this.iframe.focus();  // this.focus(); won't work
				dojo.stopEvent(e);
			}else if(e.keyCode == dojo.keys.TAB && e.shiftKey){
				// if there is a toolbar, set focus to it, otherwise ignore
				if(this.toolbar){
					this.toolbar.focus();
				}
				dojo.stopEvent(e);
			}
		}
		return true;
	},

	onKeyUp: function(e){
		// summary:
		//		Handler for onkeyup event
		// tags:
		//      callback
		return;
	},

	setDisabled: function(/*Boolean*/ disabled){
		// summary:
		//		Deprecated, use attr('disabled', ...) instead.
		// tags:
		//		deprecated
		dojo.deprecated('dijit.Editor::setDisabled is deprecated','use dijit.Editor::attr("disabled",boolean) instead', 2.0);
		this.attr('disabled',disabled);
	},
	_setValueAttr: function(/*String*/ value){
		// summary:
		//      Registers that attr("value", foo) should call setValue(foo)
		this.setValue(value);
	},
	_getDisableSpellCheckAttr: function(){
		return !dojo.attr(this.document.body, "spellcheck");
	},
	_setDisableSpellCheckAttr: function(/*Boolean*/ disabled){
		if(this.document){
			dojo.attr(this.document.body, "spellcheck", !disabled);
		}else{
			// try again after the editor is finished loading 
			this.onLoadDeferred.addCallback(dojo.hitch(this, function(){
				dojo.attr(this.document.body, "spellcheck", !disabled);
			}));
		}
	},

	onKeyPress: function(e){
		// summary:
		//		Handle the various key events
		// tags:
		//		protected

		//console.debug("keyup char:", e.keyChar, e.ctrlKey);
		var c = (e.keyChar && e.keyChar.toLowerCase()) || e.keyCode
		var handlers = this._keyHandlers[c];
		//console.debug("handler:", handlers);
		var args = arguments;
		if(handlers && !e.altKey){
			dojo.forEach(handlers, function(h){
				if((!!h.shift == !!e.shiftKey)&&(!!h.ctrl == !!e.ctrlKey)){
					if(!h.handler.apply(this, args)){
						e.preventDefault();
					}
					// break;
				}
			}, this);
		}

		// function call after the character has been inserted
		if(!this._onKeyHitch){
			this._onKeyHitch=dojo.hitch(this, "onKeyPressed");
		}
		setTimeout(this._onKeyHitch, 1);
		return true;
	},

	addKeyHandler: function(/*String*/ key, /*Boolean*/ ctrl, /*Boolean*/ shift, /*Function*/ handler){
		// summary:
		//		Add a handler for a keyboard shortcut
		// description:
		//		The key argument should be in lowercase if it is a letter character
		// tags:
		//		protected
		if(!dojo.isArray(this._keyHandlers[key])){
			this._keyHandlers[key] = [];
		}
		this._keyHandlers[key].push({
			shift: shift || false,
			ctrl: ctrl || false,
			handler: handler
		});
	},

	onKeyPressed: function(){
		// summary:
		//		Handler for after the user has pressed a key, and the display has been updated.
		//		(Runs on a timer so that it runs after the display is updated)
		// tags:
		//		private
		this.onDisplayChanged(/*e*/); // can't pass in e
	},

	onClick: function(/*Event*/ e){
		// summary:
		//		Handler for when the user clicks.
		// tags:
		//		private

		// console.info('onClick',this._tryDesignModeOn);
		this.onDisplayChanged(e);
	},

	_onIEMouseDown: function(/*Event*/ e){
		// summary:
		//		IE only to prevent 2 clicks to focus
		// tags:
		//		protected

		if(!this._focused && !this.disabled){
			this.focus();
		}
	},

	_onBlur: function(e){
		// summary:
		//		Called from focus manager when focus has moved away from this editor
		// tags:
		//		protected

		// console.info('_onBlur')

		this.inherited(arguments);
		var _c=this.getValue(true);
		
		if(_c!=this.savedContent){
			this.onChange(_c);
			this.savedContent=_c;
		}
		if(dojo.isMoz && this.iframe){
			var titleObj = dojo.isFF<3 ? this.iframe.contentDocument : this.iframe;
			 titleObj.title = this._localizedIframeTitles.iframeEditTitle;
		} 

	},
	_onFocus: function(/*Event*/ e){
		// summary:
		//		Called from focus manager when focus has moved into this editor
		// tags:
		//		protected

		// console.info('_onFocus')
		if(!this.disabled){
			if(!this._disabledOK){
				this.attr('disabled', false);
			}
			this.inherited(arguments);
		}
	},

	// TODO: why is this needed - should we deprecate this ?
	blur: function(){
		// summary:
		//		Remove focus from this instance.
		// tags:
		//		deprecated
		if(!dojo.isIE && this.window.document.documentElement && this.window.document.documentElement.focus){
			this.window.document.documentElement.focus();
		}else if(dojo.doc.body.focus){
			dojo.doc.body.focus();
		}
	},

	focus: function(){
		// summary:
		//		Move focus to this editor
		if(!dojo.isIE){
			dijit.focus(this.iframe);
		}else if(this.editNode && this.editNode.focus){
			// editNode may be hidden in display:none div, lets just punt in this case
			//this.editNode.focus(); -> causes IE to scroll always (strict and quirks mode) to the top the Iframe 
			// if we fire the event manually and let the browser handle the focusing, the latest  
			// cursor position is focused like in FF                         
			this.iframe.fireEvent('onfocus', document.createEventObject()); // createEventObject only in IE 
		//	}else{
		// 	// TODO: should we throw here?
		//	console.debug("Have no idea how to focus into the editor!");
		}
	},

	// _lastUpdate: 0,
	updateInterval: 200,
	_updateTimer: null,
	onDisplayChanged: function(/*Event*/ e){
		// summary:
		//		This event will be fired everytime the display context
		//		changes and the result needs to be reflected in the UI.
		// description:
		//		If you don't want to have update too often,
		//		onNormalizedDisplayChanged should be used instead
		// tags:
		//		private

		// var _t=new Date();
		if(this._updateTimer){
			clearTimeout(this._updateTimer);
		}
		if(!this._updateHandler){
			this._updateHandler = dojo.hitch(this,"onNormalizedDisplayChanged");
		}
		this._updateTimer = setTimeout(this._updateHandler, this.updateInterval);
	},
	onNormalizedDisplayChanged: function(){
		// summary:
		//		This event is fired every updateInterval ms or more
		// description:
		//		If something needs to happen immediately after a
		//		user change, please use onDisplayChanged instead.
		// tags:
		//		private
		delete this._updateTimer;
	},
	onChange: function(newContent){
		// summary:
		//		This is fired if and only if the editor loses focus and
		//		the content is changed.
	},
	_normalizeCommand: function(/*String*/ cmd){
		// summary:
		//		Used as the advice function by dojo.connect to map our
		//		normalized set of commands to those supported by the target
		//		browser.
		// tags:
		//		private

		var command = cmd.toLowerCase();
		if(command == "formatblock"){
			if(dojo.isSafari){ command = "heading"; }
		}else if(command == "hilitecolor" && !dojo.isMoz){
			command = "backcolor";
		}

		return command;
	},

	_qcaCache: {},
	queryCommandAvailable: function(/*String*/ command){
		// summary:
		//		Tests whether a command is supported by the host. Clients
		//		SHOULD check whether a command is supported before attempting
		//		to use it, behaviour for unsupported commands is undefined.
		// command:
		//		The command to test for
		// tags:
		//		private

		// memoizing version. See _queryCommandAvailable for computing version
		var ca = this._qcaCache[command];
		if(ca != undefined){ return ca; }
		return (this._qcaCache[command] = this._queryCommandAvailable(command));
	},
	
	_queryCommandAvailable: function(/*String*/ command){
		// summary:
		//		See queryCommandAvailable().
		// tags:
		//		private

		var ie = 1;
		var mozilla = 1 << 1;
		var webkit = 1 << 2;
		var opera = 1 << 3;
		var webkit420 = 1 << 4;

		var gt420 = dojo.isWebKit;

		function isSupportedBy(browsers){
			return {
				ie: Boolean(browsers & ie),
				mozilla: Boolean(browsers & mozilla),
				webkit: Boolean(browsers & webkit),
				webkit420: Boolean(browsers & webkit420),
				opera: Boolean(browsers & opera)
			}
		}

		var supportedBy = null;

		switch(command.toLowerCase()){
			case "bold": case "italic": case "underline":
			case "subscript": case "superscript":
			case "fontname": case "fontsize":
			case "forecolor": case "hilitecolor":
			case "justifycenter": case "justifyfull": case "justifyleft":
			case "justifyright": case "delete": case "selectall": case "toggledir":
				supportedBy = isSupportedBy(mozilla | ie | webkit | opera);
				break;

			case "createlink": case "unlink": case "removeformat":
			case "inserthorizontalrule": case "insertimage":
			case "insertorderedlist": case "insertunorderedlist":
			case "indent": case "outdent": case "formatblock":
			case "inserthtml": case "undo": case "redo": case "strikethrough": case "tabindent":
				supportedBy = isSupportedBy(mozilla | ie | opera | webkit420);
				break;

			case "blockdirltr": case "blockdirrtl":
			case "dirltr": case "dirrtl":
			case "inlinedirltr": case "inlinedirrtl":
				supportedBy = isSupportedBy(ie);
				break;
			case "cut": case "copy": case "paste":
				supportedBy = isSupportedBy( ie | mozilla | webkit420);
				break;

			case "inserttable":
				supportedBy = isSupportedBy(mozilla | ie);
				break;

			case "insertcell": case "insertcol": case "insertrow":
			case "deletecells": case "deletecols": case "deleterows":
			case "mergecells": case "splitcell":
				supportedBy = isSupportedBy(ie | mozilla);
				break;

			default: return false;
		}

		return (dojo.isIE && supportedBy.ie) ||
			(dojo.isMoz && supportedBy.mozilla) ||
			(dojo.isWebKit && supportedBy.webkit) ||
			(dojo.isWebKit > 420 && supportedBy.webkit420) ||
			(dojo.isOpera && supportedBy.opera);  // Boolean return true if the command is supported, false otherwise
	},

	execCommand: function(/*String*/ command, argument){
		// summary:
		//		Executes a command in the Rich Text area
		// command:
		//		The command to execute
		// argument:
		//		An optional argument to the command
		// tags:
		//		protected

		var returnValue;

		//focus() is required for IE to work
		//In addition, focus() makes sure after the execution of
		//the command, the editor receives the focus as expected
		this.focus();

		command = this._normalizeCommand(command);

		if(argument != undefined){
			if(command == "heading"){
				throw new Error("unimplemented");
			}else if((command == "formatblock") && dojo.isIE){
				argument = '<'+argument+'>';
			}
		}
		if(command == "inserthtml"){
			//TODO: we shall probably call _preDomFilterContent here as well
			argument = this._preFilterContent(argument);
			returnValue = true;
			if(dojo.isIE){
				var insertRange = this.document.selection.createRange();
				if(this.document.selection.type.toUpperCase()=='CONTROL'){
					var n=insertRange.item(0);
					while(insertRange.length){
						insertRange.remove(insertRange.item(0));
					}
					n.outerHTML=argument;
				}else{
					insertRange.pasteHTML(argument);
				}
				insertRange.select();
				//insertRange.collapse(true);
			}else if(dojo.isMoz && !argument.length){
				//mozilla can not inserthtml an empty html to delete current selection
				//so we delete the selection instead in this case
				this._sCall("remove"); // FIXME
			}else{
				returnValue = this.document.execCommand(command, false, argument);
			}
		}else if(
			(command == "unlink")&&
			(this.queryCommandEnabled("unlink"))&&
			(dojo.isMoz || dojo.isWebKit)
		){
			// fix up unlink in Mozilla to unlink the link and not just the selection

			// grab selection
			// Mozilla gets upset if we just store the range so we have to
			// get the basic properties and recreate to save the selection
			//	var selection = this.window.getSelection();

			//	var selectionRange = selection.getRangeAt(0);
			//	var selectionStartContainer = selectionRange.startContainer;
			//	var selectionStartOffset = selectionRange.startOffset;
			//	var selectionEndContainer = selectionRange.endContainer;
			//	var selectionEndOffset = selectionRange.endOffset;

			// select our link and unlink
			var a = this._sCall("getAncestorElement", [ "a" ]);
			this._sCall("selectElement", [ a ]);

			returnValue = this.document.execCommand("unlink", false, null);
		}else if((command == "hilitecolor")&&(dojo.isMoz)){
			// mozilla doesn't support hilitecolor properly when useCSS is
			// set to false (bugzilla #279330)

			this.document.execCommand("styleWithCSS", false, true);
			returnValue = this.document.execCommand(command, false, argument);
			this.document.execCommand("styleWithCSS", false, false);

		}else if((dojo.isIE)&&( (command == "backcolor")||(command == "forecolor") )){
			// Tested under IE 6 XP2, no problem here, comment out
			// IE weirdly collapses ranges when we exec these commands, so prevent it
			//	var tr = this.document.selection.createRange();
			argument = arguments.length > 1 ? argument : null;
			returnValue = this.document.execCommand(command, false, argument);

			// timeout is workaround for weird IE behavior were the text
			// selection gets correctly re-created, but subsequent input
			// apparently isn't bound to it
			//	setTimeout(function(){tr.select();}, 1);
		}else{
			argument = arguments.length > 1 ? argument : null;
			//	if(dojo.isMoz){
			//		this.document = this.iframe.contentWindow.document
			//	}

//			console.debug("execCommand:", command, argument);
			if(argument || command!="createlink"){
				returnValue = this.document.execCommand(command, false, argument);
			}
		}

		this.onDisplayChanged();
		return returnValue;
	},

	queryCommandEnabled: function(/*String*/ command){
		// summary:
		//		Check whether a command is enabled or not.
		// tags:
		//		protected
		if(this.disabled || !this._disabledOK){ return false; }
		command = this._normalizeCommand(command);
		if(dojo.isMoz || dojo.isWebKit){
			if(command == "unlink"){ // mozilla returns true always
				// console.debug(this._sCall("hasAncestorElement", ['a']));
				this._sCall("hasAncestorElement", ["a"]);
			}else if(command == "inserttable"){
				return true;
			}
		}
		//see #4109
		if(dojo.isWebKit){
			if(command == "copy"){
				command = "cut";
			}else if(command == "paste"){
				return true;
			}
		}
		// return this.document.queryCommandEnabled(command);
		var elem = dojo.isIE ? this.document.selection.createRange() : this.document;
		return elem.queryCommandEnabled(command);
	},

	queryCommandState: function(command){
		// summary:
		//		Check the state of a given command and returns true or false.
		// tags:
		//		protected

		if(this.disabled || !this._disabledOK){ return false; }
		command = this._normalizeCommand(command);
		// try{
			//this.editNode.contentEditable = true;
			return this.document.queryCommandState(command);
		// }catch(e){
		// 	console.debug(e);
		// 	return false;
		// }
	},

	queryCommandValue: function(command){
		// summary:
		//		Check the value of a given command. This matters most for
		//		custom selections and complex values like font value setting.
		// tags:
		//		protected

		if(this.disabled || !this._disabledOK){ return false; }
		var r;
		command = this._normalizeCommand(command);
		if(dojo.isIE && command == "formatblock"){
			r = this._native2LocalFormatNames[this.document.queryCommandValue(command)];
		}else{
			r = this.document.queryCommandValue(command);
		}
		return r;
	},

	// Misc.

	_sCall: function(name, args){
		// summary:
		//		Run the named method of dijit._editor.selection over the
		//		current editor instance's window, with the passed args.
		// tags:
		//		private
		return dojo.withGlobal(this.window, name, dijit._editor.selection, args);
	},

	// FIXME: this is a TON of code duplication. Why?

	placeCursorAtStart: function(){
		// summary:
		//		Place the cursor at the start of the editing area.
		// tags:
		//		private

		this.focus();

		//see comments in placeCursorAtEnd
		var isvalid=false;
		if(dojo.isMoz){
			var first=this.editNode.firstChild;
			while(first){
				if(first.nodeType == 3){
					if(first.nodeValue.replace(/^\s+|\s+$/g, "").length>0){
						isvalid=true;
						this._sCall("selectElement", [ first ]);
						break;
					}
				}else if(first.nodeType == 1){
					isvalid=true;
					this._sCall("selectElementChildren", [ first ]);
					break;
				}
				first = first.nextSibling;
			}
		}else{
			isvalid=true;
			this._sCall("selectElementChildren", [ this.editNode ]);
		}
		if(isvalid){
			this._sCall("collapse", [ true ]);
		}
	},

	placeCursorAtEnd: function(){
		// summary:
		//		Place the cursor at the end of the editing area.
		// tags:
		//		private

		this.focus();

		//In mozilla, if last child is not a text node, we have to use
		// selectElementChildren on this.editNode.lastChild otherwise the
		// cursor would be placed at the end of the closing tag of
		//this.editNode.lastChild
		var isvalid=false;
		if(dojo.isMoz){
			var last=this.editNode.lastChild;
			while(last){
				if(last.nodeType == 3){
					if(last.nodeValue.replace(/^\s+|\s+$/g, "").length>0){
						isvalid=true;
						this._sCall("selectElement", [ last ]);
						break;
					}
				}else if(last.nodeType == 1){
					isvalid=true;
					if(last.lastChild){
						this._sCall("selectElement", [ last.lastChild ]);
					}else{
						this._sCall("selectElement", [ last ]);
					}
					break;
				}
				last = last.previousSibling;
			}
		}else{
			isvalid=true;
			this._sCall("selectElementChildren", [ this.editNode ]);
		}
		if(isvalid){
			this._sCall("collapse", [ false ]);
		}
	},

	getValue: function(/*Boolean?*/ nonDestructive){
		// summary:
		//		Return the current content of the editing area (post filters
		//		are applied).  Users should call attr('value') instead.
		//	nonDestructive:
		//		defaults to false. Should the post-filtering be run over a copy
		//		of the live DOM? Most users should pass "true" here unless they
		//		*really* know that none of the installed filters are going to
		//		mess up the editing session.
		// tags:
		//		private
		if(this.textarea){
			if(this.isClosed || !this.isLoaded){
				return this.textarea.value;
			}
		}

		return this._postFilterContent(null, nonDestructive);
	},
	_getValueAttr: function(){
		// summary:
		//		Hook to make attr("value") work
		return this.getValue();
	},

	setValue: function(/*String*/ html){
		// summary:
		//		This function sets the content. No undo history is preserved.
		//		Users should use attr('value', ...) instead.
		// tags:
		//		deprecated

		// TODO: remove this and getValue() for 2.0, and move code to _setValueAttr()

		if(!this.isLoaded){ 
			// try again after the editor is finished loading 
			this.onLoadDeferred.addCallback(dojo.hitch(this, function(){ 
				this.setValue(html); 
			})); 
			return;
		} 
		if(this.textarea && (this.isClosed || !this.isLoaded)){
			this.textarea.value=html;
		}else{
			html = this._preFilterContent(html);
			var node = this.isClosed ? this.domNode : this.editNode;
			node.innerHTML = html;
			this._preDomFilterContent(node);
		}
		this.onDisplayChanged();
	},

	replaceValue: function(/*String*/ html){
		// summary:
		//		This function set the content while trying to maintain the undo stack
		//		(now only works fine with Moz, this is identical to setValue in all
		//		other browsers)
		// tags:
		//		protected

		if(this.isClosed){
			this.setValue(html);
		}else if(this.window && this.window.getSelection && !dojo.isMoz){ // Safari
			// look ma! it's a totally f'd browser!
			this.setValue(html);
		}else if(this.window && this.window.getSelection){ // Moz
			html = this._preFilterContent(html);
			this.execCommand("selectall");
			if(dojo.isMoz && !html){ html = "&nbsp;" }
			this.execCommand("inserthtml", html);
			this._preDomFilterContent(this.editNode);
		}else if(this.document && this.document.selection){//IE
			//In IE, when the first element is not a text node, say
			//an <a> tag, when replacing the content of the editing
			//area, the <a> tag will be around all the content
			//so for now, use setValue for IE too
			this.setValue(html);
		}
	},

	_preFilterContent: function(/*String*/ html){
		// summary:
		//		Filter the input before setting the content of the editing
		//		area. DOM pre-filtering may happen after this
		//		string-based filtering takes place but as of 1.2, this is not
		//		guaranteed for operations such as the inserthtml command.
		// tags:
		//		private

		var ec = html;
		dojo.forEach(this.contentPreFilters, function(ef){ if(ef){ ec = ef(ec); } });
		return ec;
	},
	_preDomFilterContent: function(/*DomNode*/ dom){
		// summary:
		//		filter the input's live DOM. All filter operations should be
		//		considered to be "live" and operating on the DOM that the user
		//		will be interacting with in their editing session.
		// tags:
		//		private
		dom = dom || this.editNode;
		dojo.forEach(this.contentDomPreFilters, function(ef){
			if(ef && dojo.isFunction(ef)){
				ef(dom);
			}
		}, this);
	},

	_postFilterContent: function(
		/*DomNode|DomNode[]|String?*/ dom,
		/*Boolean?*/ nonDestructive){
		// summary:
		//		filter the output after getting the content of the editing area
		//
		//	description:
		//		post-filtering allows plug-ins and users to specify any number
		//		of transforms over the editor's content, enabling many common
		//		use-cases such as transforming absolute to relative URLs (and
		//		vice-versa), ensuring conformance with a particular DTD, etc.
		//		The filters are registered in the contentDomPostFilters and
		//		contentPostFilters arrays. Each item in the
		//		contentDomPostFilters array is a function which takes a DOM
		//		Node or array of nodes as its only argument and returns the
		//		same. It is then passed down the chain for further filtering.
		//		The contentPostFilters array behaves the same way, except each
		//		member operates on strings. Together, the DOM and string-based
		//		filtering allow the full range of post-processing that should
		//		be necessaray to enable even the most agressive of post-editing
		//		conversions to take place.
		//
		//		If nonDestructive is set to "true", the nodes are cloned before
		//		filtering proceeds to avoid potentially destructive transforms
		//		to the content which may still needed to be edited further.
		//		Once DOM filtering has taken place, the serialized version of
		//		the DOM which is passed is run through each of the
		//		contentPostFilters functions.
		//
		//	dom:
		//		a node, set of nodes, which to filter using each of the current
		//		members of the contentDomPostFilters and contentPostFilters arrays. 
		//
		//	nonDestructive:
		//		defaults to "false". If true, ensures that filtering happens on
		//		a clone of the passed-in content and not the actual node
		//		itself.
		//
		// tags:
		//		private

		var ec;
		if(!dojo.isString(dom)){
			dom = dom || this.editNode;
			if(this.contentDomPostFilters.length){
				if(nonDestructive){
					dom = dojo.clone(dom);
				}
				dojo.forEach(this.contentDomPostFilters, function(ef){
					dom = ef(dom);
				});
			}
			ec = dijit._editor.getChildrenHtml(dom);
		}else{
			ec = dom;
		}

		if(!dojo.trim(ec.replace(/^\xA0\xA0*/, '').replace(/\xA0\xA0*$/, '')).length){
			ec = "";
		}

		//	if(dojo.isIE){
		//		//removing appended <P>&nbsp;</P> for IE
		//		ec = ec.replace(/(?:<p>&nbsp;</p>[\n\r]*)+$/i,"");
		//	}
		dojo.forEach(this.contentPostFilters, function(ef){
			ec = ef(ec);
		});

		return ec;
	},

	_saveContent: function(/*Event*/ e){
		// summary:
		//		Saves the content in an onunload event if the editor has not been closed
		// tags:
		//		private

		var saveTextarea = dojo.byId(dijit._scopeName + "._editor.RichText.savedContent");
		saveTextarea.value += this._SEPARATOR + this.name + ":" + this.getValue();
	},


	escapeXml: function(/*String*/ str, /*Boolean*/ noSingleQuotes){
		// summary:
		//		Adds escape sequences for special characters in XML: &<>"'
		//		Optionally skips escapes for single quotes
		// tags:
		//		private

		str = str.replace(/&/gm, "&amp;").replace(/</gm, "&lt;").replace(/>/gm, "&gt;").replace(/"/gm, "&quot;");
		if(!noSingleQuotes){
			str = str.replace(/'/gm, "&#39;");
		}
		return str; // string
	},

	getNodeHtml: function(/* DomNode */ node){
		// summary:
		//		Deprecated.   Use dijit._editor._getNodeHtml() instead.
		// tags:
		//		deprecated
		dojo.deprecated('dijit.Editor::getNodeHtml is deprecated','use dijit._editor.getNodeHtml instead', 2);
		return dijit._editor.getNodeHtml(node); // String
	},

	getNodeChildrenHtml: function(/* DomNode */ dom){
		// summary:
		//		Deprecated.   Use dijit._editor.getChildrenHtml() instead.
		// tags:
		//		deprecated
		dojo.deprecated('dijit.Editor::getNodeChildrenHtml is deprecated','use dijit._editor.getChildrenHtml instead', 2);
		return dijit._editor.getChildrenHtml(dom);
	},

	close: function(/*Boolean*/ save, /*Boolean*/ force){
		// summary:
		//		Kills the editor and optionally writes back the modified contents to the
		//		element from which it originated.
		// save:
		//		Whether or not to save the changes. If false, the changes are discarded.
		// force: Boolean
		//		Unused.  TODO: remove for 2.0
		// tags:
		//		private

		if(this.isClosed){return false; }

		if(!arguments.length){ save = true; }
		this._content = this.getValue();
		var changed = (this.savedContent != this._content);

		// line height is squashed for iframes
		// FIXME: why was this here? if (this.iframe){ this.domNode.style.lineHeight = null; }

		if(this.interval){ clearInterval(this.interval); }

		if(this._webkitListener){
			//Cleaup of WebKit fix: #9532
			this.disconnect(this._webkitListener);
			delete this._webkitListener;
		}

		// Guard against memory leaks on IE (see #9268)
		if(dojo.isIE){
		   this.iframe.onfocus = null;
		}
		this.iframe._loadFunc = null;

		if(this.textarea){
			var s = this.textarea.style;
			s.position = "";
			s.left = s.top = "";
			if(dojo.isIE){
				s.overflow = this.__overflow;
				this.__overflow = null;
			}
			this.textarea.value = save ? this._content : this.savedContent;
			dojo.destroy(this.domNode);
			this.domNode = this.textarea;
		}else{
			// if(save){
			// why we treat moz differently? comment out to fix #1061
			//		if(dojo.isMoz){
			//			var nc = dojo.doc.createElement("span");
			//			this.domNode.appendChild(nc);
			//			nc.innerHTML = this.editNode.innerHTML;
			//		}else{
			//			this.domNode.innerHTML = this._content;
			//		}
			// }
			this.domNode.innerHTML = save ? this._content : this.savedContent;
		}

		dojo.removeClass(this.domNode, "RichTextEditable");
		this.isClosed = true;
		this.isLoaded = false;
		// FIXME: is this always the right thing to do?
		delete this.editNode;

		if(this.window && this.window._frameElement){
			this.window._frameElement = null;
		}

		this.window = null;
		this.document = null;
		this.editingArea = null;
		this.editorObject = null;

		return changed; // Boolean: whether the content has been modified
	},

	destroyRendering: function(){
		// summary: stub	
	}, 

	destroy: function(){
		this.destroyRendering();
		if(!this.isClosed){ this.close(false); }
		this.inherited(arguments);
	},

	_removeMozBogus: function(/* String */ html){
		// summary:
		//		Post filter to remove unwanted HTML attributes generated by mozilla
		// tags:
		//		private
		return html.replace(/\stype="_moz"/gi, '').replace(/\s_moz_dirty=""/gi, ''); // String
	},
	_removeSafariBogus: function(/* String */ html){
		// summary:
		//		Post filter to remove unwanted HTML attributes generated by webkit
		// tags:
		//		private
		return html.replace(/\sclass="webkit-block-placeholder"/gi, ''); // String
	},
	_fixContentForMoz: function(/* String */ html){
		// summary:
		//		Pre-filter for mozilla.
		// description:
		//		Moz can not handle strong/em tags correctly, convert them to b/i
		// tags:
		//		private
		return html.replace(/<(\/)?strong([ \>])/gi, '<$1b$2')
			.replace(/<(\/)?em([ \>])/gi, '<$1i$2' ); // String
	},

	_preFixUrlAttributes: function(/* String */ html){
		// summary:
		//		Pre-filter to do fixing to href attributes on <a> and <img> tags
		// tags:
		//		private
		return html.replace(/(?:(<a(?=\s).*?\shref=)("|')(.*?)\2)|(?:(<a\s.*?href=)([^"'][^ >]+))/gi, 
				'$1$4$2$3$5$2 _djrealurl=$2$3$5$2')
			.replace(/(?:(<img(?=\s).*?\ssrc=)("|')(.*?)\2)|(?:(<img\s.*?src=)([^"'][^ >]+))/gi, 
				'$1$4$2$3$5$2 _djrealurl=$2$3$5$2'); // String
	}
});