analytics/webcontent/dojo17/dijit/_editor/BuxRichText.js

define("dijit/_editor/BuxRichText", [
	"dojo/_base/array", // array.forEach array.indexOf array.some
	"dojo/_base/config", // config
	"dojo/_base/declare", // declare
	"dojo/_base/Deferred", // Deferred
	"dojo/dom", // dom.byId
	"dojo/dom-attr", // domAttr.set or get
	"dojo/dom-class", // domClass.add domClass.remove
	"dojo/dom-construct", // domConstruct.create domConstruct.destroy domConstruct.place
	"dojo/dom-geometry", // domGeometry.position
	"dojo/dom-style", // domStyle.getComputedStyle domStyle.set
	"dojo/_base/event", // event.stop
	"dojo/_base/kernel", // kernel.deprecated
	"dojo/keys", // keys.BACKSPACE keys.TAB
	"dojo/_base/lang", // lang.clone lang.hitch lang.isArray lang.isFunction lang.isString lang.trim
	"dojo/on", // on()
	"dojo/query", // query
	"dojo/ready", // ready
	"dojo/_base/sniff", // has("ie") has("mozilla") has("opera") has("safari") has("webkit")
	"dojo/topic",	// topic.publish() (publish)
	"dojo/_base/unload", // unload
	"dojo/_base/url", // url
	"dojo/_base/window", // win.body win.doc.body.focus win.doc.createElement win.global.location win.withGlobal
	"../_Widget",
	"../_CssStateMixin",
	"./selection",
	"./range",
	"./html",
	"../focus",
	".."	// dijit._scopeName
], function(array, config, declare, Deferred, dom, domAttr, domClass, domConstruct, domGeometry, domStyle,
	event, kernel, keys, lang, on, query, ready, has, topic, unload, _Url, win,
	_Widget, _CssStateMixin, selectionapi, rangeapi, htmlapi, focus, dijit){

/*=====
	var _Widget = dijit._Widget;
	var _CssStateMixin = dijit._CssStateMixin;
=====*/

// module:
//		dijit/_editor/BuxRichText
// summary:
//		dijit._editor.BuxRichText is the core of dijit.Editor, which provides basic
//		WYSIWYG editing features.

// if you want to allow for rich text saving with back/forward actions, you must add a text area to your page with
// the id==dijit._scopeName + "._editor.BuxRichText.value" (typically "dijit._editor.BuxRichText.value). For example,
// something like this will work:
//
//	<textarea id="dijit._editor.BuxRichText.value" style="display:none;position:absolute;top:-100px;left:-100px;height:3px;width:3px;overflow:hidden;"></textarea>
//

var BuxRichText = declare("dijit._editor.BuxRichText", [_Widget, _CssStateMixin], {
	// summary:
	//		dijit._editor.BuxRichText is the core of dijit.Editor, which provides basic
	//		WYSIWYG editing features.
	//
	// description:
	//		dijit._editor.BuxRichText 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

	constructor: function(params){
		// 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 = [];

		// Make a copy of this.events before we start writing into it, otherwise we
		// will modify the prototype which leads to bad things on pages w/multiple editors
		this.events = [].concat(this.events);

		this._keyHandlers = {};

		if(params && lang.isString(params.value)){
			this.value = params.value;
		}

		this.onLoadDeferred = new Deferred();
	},

	baseClass: "dijitEditor",

	// 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: "",

	// 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__%%**@@",

	// _NAME_CONTENT_SEP: [private] String
	//		USed to separate name from content.  Just a colon isn't safe.
	_NAME_CONTENT_SEP: "@@**%%:%%**@@",

	// onLoadDeferred: [readonly] dojo.Deferred
	//		Deferred which is fired when the editor finishes loading.
	//		Call myEditor.onLoadDeferred.then(callback) it to be informed
	//		when the rich-text area initialization is finalized.
	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("BuxRichText should not be used with the TEXTAREA tag.  See dijit._editor.BuxRichText docs.");
		}

		// Push in the builtin filters now, making them the first executed, but not over-riding anything
		// users passed in.  See: #6062
		this.contentPreFilters = [lang.hitch(this, "_preFixUrlAttributes")].concat(this.contentPreFilters);
		if(has("mozilla")){
			this.contentPreFilters = [this._normalizeFontStyle].concat(this.contentPreFilters);
			this.contentPostFilters = [this._removeMozBogus].concat(this.contentPostFilters);
		}
		if(has("webkit")){
			// Try to clean up WebKit bogus artifacts.  The inserted classes
			// made by WebKit sometimes messes things up.
			this.contentPreFilters = [this._removeWebkitBogus].concat(this.contentPreFilters);
			this.contentPostFilters = [this._removeWebkitBogus].concat(this.contentPostFilters);
		}
		if(has("ie") || has("trident")){
			// IE generates <strong> and <em> but we want to normalize to <b> and <i>
				// Still happens in IE11!
			this.contentPostFilters = [this._normalizeFontStyle].concat(this.contentPostFilters);
			this.contentDomPostFilters = [lang.hitch(this, this._stripBreakerNodes)].concat(this.contentDomPostFilters);
		}
		this.inherited(arguments);

		topic.publish(dijit._scopeName + "._editor.BuxRichText::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 = lang.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(!has("ie")){
			ctrlKeyHandlers.Z = exec("redo"); //FIXME: undo?
		}

		var key;
		for(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 handled specially

	// 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(BuxRichText._editorCommandsLocalized){
			// Use the already generate cache of mappings.
			this._local2NativeFormatNames = BuxRichText._local2NativeFormatNames;
			this._native2LocalFormatNames = BuxRichText._native2LocalFormatNames;
			return;
		}
		BuxRichText._editorCommandsLocalized = true;
		BuxRichText._local2NativeFormatNames = {};
		BuxRichText._native2LocalFormatNames = {};
		this._local2NativeFormatNames = BuxRichText._local2NativeFormatNames;
		this._native2LocalFormatNames = BuxRichText._native2LocalFormatNames;
		//in IE, names for blockformat is locale dependent, so we cache the values here

		//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
		// Also, IE9 does weird stuff unless we do it inside the editor iframe.
		var style = { position: "absolute", top: "0px", zIndex: 10, opacity: 0.01 };
		var div = domConstruct.create('div', {style: style, innerHTML: localhtml});
		win.body().appendChild(div);

		// IE9 has a timing issue with doing this right after setting
		// the inner HTML, so put a delay in.
		var inject = lang.hitch(this, function(){
			var node = div.firstChild;
			while(node){
				try{
					selectionapi.selectElement(node.firstChild);
					var nativename = node.tagName.toLowerCase();
					this._local2NativeFormatNames[nativename] = document.queryCommandValue("formatblock");
					this._native2LocalFormatNames[this._local2NativeFormatNames[nativename]] = nativename;
					node = node.nextSibling.nextSibling;
					//console.log("Mapped: ", nativename, " to: ", this._local2NativeFormatNames[nativename]);
				}catch(e){ /*Sqelch the occasional IE9 error */ }
			}
			div.parentNode.removeChild(div);
			div.innerHTML = "";
		});
		setTimeout(inject, 0);
	},

	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.
		// tags:
		//		private

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

		if(!this.isClosed){ this.close(); }
		topic.publish(dijit._scopeName + "._editor.BuxRichText::open", this);

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

		var dn = this.domNode;

		// "html" will hold the innerHTML of the srcNodeRef and will be used to
		// initialize the editor.
		var html;

		if(lang.isString(this.value)){
			// Allow setting the editor content programmatically instead of
			// relying on the initial content being contained within the target
			// domNode.
			html = this.value;
			delete this.value;
			dn.innerHTML = "";
		}else 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 = ta.value;
			dn = this.domNode = win.doc.createElement("div");
			dn.setAttribute('widgetId', this.id);
			ta.removeAttribute('widgetId');
			dn.cssText = ta.cssText;
			dn.className += " " + ta.className;
			domConstruct.place(dn, ta, "before");
			var tmpFunc = lang.hitch(this, function(){
				//some browsers refuse to submit display=none textarea, so
				//move the textarea off screen instead
				domStyle.set(ta, {
					display: "block",
					position: "absolute",
					top: "-1000px"
				});

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

			if(ta.form){
				var resetValue = ta.value;
				this.reset = function(){
					var current = this.getValue();
					if(current !== resetValue){
						this.replaceValue(resetValue);
					}
				};
				on(ta.form, "submit", lang.hitch(this, function(){
					// Copy value to the <textarea> so it gets submitted along with form.
					// FIXME: should we be calling close() here instead?
					domAttr.set(ta, 'disabled', this.disabled); // don't submit the value if disabled
					ta.value = this.getValue();
				}));
			}
		}else{
			html = htmlapi.getChildrenHtml(dn);
			dn.innerHTML = "";
		}

		this.value = 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>";
		}

		// Construct the editor div structure.
		this.header = dn.ownerDocument.createElement("div");
		dn.appendChild(this.header);
		this.editingArea = dn.ownerDocument.createElement("div");
		dn.appendChild(this.editingArea);
		this.footer = dn.ownerDocument.createElement("div");
		dn.appendChild(this.footer);

		if(!this.name){
			this.name = this.id + "_AUTOGEN";
		}

		// User has pressed back/forward button so we lost the text in the editor, but it's saved
		// in a hidden <textarea> (which contains the data for all the editors on this page),
		// so get editor value from there
		if(this.name !== "" && (!config["useXDomain"] || config["allowXdRichTextSave"])){
			var saveTextarea = dom.byId(dijit._scopeName + "._editor.BuxRichText.value");
			if(saveTextarea && saveTextarea.value !== ""){
				var datas = saveTextarea.value.split(this._SEPARATOR), i=0, dat;
				while((dat=datas[i++])){
					var data = dat.split(this._NAME_CONTENT_SEP);
					if(data[0] === this.name){
						html = data[1];
						datas = datas.splice(i, 1);
						saveTextarea.value = datas.join(this._SEPARATOR);
						break;
					}
				}
			}

			if(!BuxRichText._globalSaveHandler){
				BuxRichText._globalSaveHandler = {};
				unload.addOnUnload(function(){
					var id;
					for(id in BuxRichText._globalSaveHandler){
						var f = BuxRichText._globalSaveHandler[id];
						if(lang.isFunction(f)){
							f();
						}
					}
				});
			}
			BuxRichText._globalSaveHandler[this.id] = lang.hitch(this, "_saveContent");
		}

		this.isClosed = false;

		var ifr = (this.editorObject = this.iframe = win.doc.createElement('iframe'));
		ifr.id = this.id+"_iframe";
		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(has("ie") >= 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._loadFunc = lang.hitch( this, function(w){
			this.window = w;
				this.document = w.document;

			if(has("ie")){
				this._localizeEditorCommands();
			}

			// Do final setup and set initial contents of editor
			this.onLoad(html);
		});

		// Attach iframe to document, and set the initial (blank) content.
		var src = this._getIframeDocTxt().replace(/\\/g, "\\\\").replace(/'/g, "\\'"),
			s;

		// IE10 and earlier will throw an "Access is denied" error when attempting to access the parent frame if
		// document.domain has been set, unless the child frame also has the same document.domain set. The child frame
		// can only set document.domain while the document is being constructed using open/write/close; attempting to
		// set it later results in a different "This method can't be used in this context" error. See #17529
		if (has("ie") < 11) {
			s = 'javascript:document.open();try{parent.window;}catch(e){document.domain="' + document.domain + '";}' +
				'document.write(\'' + src + '\');document.close()';
		}
		else {
			s = "javascript: '" + src + "'";
		}

			if(has("ie") == 9){
				// On IE9, attach to document before setting the content, to avoid problem w/iframe running in
			// wrong security context, see #16633.
			this.editingArea.appendChild(ifr);
			ifr.src = s;
		}else{
			// For other browsers, set src first, especially for IE6/7 where attaching first gives a warning on
			// https:// about "this page contains secure and insecure items, do you want to view both?"
			ifr.setAttribute('src', s);
			this.editingArea.appendChild(ifr);
		}

		if(has("safari") <= 4){
			src = ifr.getAttribute("src");
			if(!src || src.indexOf("javascript") === -1){
				// Safari 4 and earlier sometimes act oddly
				// So we have to set it again.
				setTimeout(function(){ifr.setAttribute('src', s);},0);
			}
		}

		// TODO: this is a guess at the default line-height, kinda works
		if(dn.nodeName === "LI"){
			dn.lastChild.style.marginTop = "-1.2em";
		}

		domClass.add(this.domNode, this.baseClass);
	},

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

	_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 = domStyle.getComputedStyle(this.domNode);

		// The contents inside of <body>.  The real contents are set later via a call to setValue().
			// In auto-expand mode, need a wrapper div for AlwaysShowToolbar plugin to correctly
			// expand/contract the editor as the content changes.
			var html = "<div id='dijitEditorBody'></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{
			// If we can't get a non-units value, just default
			// it to the CSS spec default of 'normal'.  Seems to
			// work better, esp on IE, than '1.0'
			lineHeight = "normal";
		}
		var userStyle = "";
		var self = this;
		this.style.replace(/(^|;)\s*(line-|font-?)[^;]+/ig, function(match){
			match = match.replace(/^;/ig,"") + ';';
			var s = match.split(":")[0];
			if(s){
				s = lang.trim(s);
				s = s.toLowerCase();
				var i;
				var sC = "";
				for(i = 0; i < s.length; i++){
					var c = s.charAt(i);
					switch(c){
						case "-":
							i++;
							c = s.charAt(i).toUpperCase();
						default:
							sC += c;
					}
				}
				domStyle.set(self.domNode, sC, "");
			}
			userStyle += match + ';';
		});


		// need to find any associated label element and update iframe document title
		var label=query('label[for="'+this.id+'"]');

		return [
			this.isLeftToRight() ? "<html>\n<head>\n" : "<html dir='rtl'>\n<head>\n",
			(has("mozilla") && label.length ? "<title>" + label[0].innerHTML + "</title>\n" : ""),
			"<meta http-equiv='Content-Type' content='text/html'>\n",
			"<style>\n",
			"\tbody,html {\n",
			"\t\tbackground:transparent;\n",
			"\t\tpadding: 1px 0 0 0;\n",
			"\t\tmargin: -1px 0 0 0;\n", // remove extraneous vertical scrollbar on safari and firefox
			"\t}\n",
				"\tbody,html,#dijitEditorBody { outline: none; }",

				// Set <body> to expand to full size of editor, so clicking anywhere will work.
				// Except in auto-expand mode, in which case the editor expands to the size of <body>.
				// Also determine how scrollers should be applied.  In autoexpand mode (height = "") no scrollers on y at all.
				// But in fixed height mode we want both x/y scrollers.
				// Scrollers go on <body> since it's been set to height: 100%.
				"html { height: 100%; width: 100%; overflow: hidden; }\n",	// scroll bar is on #dijitEditorBody, shouldn't be on <html>
				this.height ? "\tbody,#dijitEditorBody { height: 100%; width: 100%; overflow: auto; }\n" :
					"\tbody,#dijitEditorBody { min-height: " + this.minHeight + "; width: 100%; overflow-x: auto; overflow-y: hidden; }\n",

			// TODO: left positioning will cause contents to disappear out of view
			//	   if it gets too wide for the visible area
			"\tbody{\n",
			"\t\ttop:0px;\n",
			"\t\tleft:0px;\n",
			"\t\tright:0px;\n",
			"\t\tfont:", font, ";\n",
				((this.height||has("opera")) ? "" : "\t\tposition: fixed;\n"),
			"\t\tline-height:", lineHeight,";\n",
			"\t}\n",
			"\tp{ margin: 1em 0; }\n",

			"\tli > ul:-moz-first-node, li > ol:-moz-first-node{ padding-top: 1.2em; }\n",
			// Can't set min-height in IE>=9, it puts layout on li, which puts move/resize handles.
			(has("ie") || has("trident") ? "" : "\tli{ min-height:1.2em; }\n"),
			"</style>\n",
			this._applyEditingAreaStyleSheets(),"\n",
			"</head>\n<body ",
			"</head>\n<body role='main' ",

			// Onload handler fills in real editor content.
			// On IE9, sometimes onload is called twice, and the first time frameElement is null (test_FullScreen.html)
			"onload='frameElement && frameElement._loadFunc(window,document)' ",
			"style='"+userStyle+"'>", html, "</body>\n</html>"
		].join(""); // String
	},

	_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 _Url(win.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 _Url(win.global.location, url)).toString();
		}

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

		this.editingAreaStyleSheets.push(url);
		this.onLoadDeferred.addCallback(lang.hitch(this, function(){
			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 _Url(win.global.location, url)).toString();
		}
		var index = array.indexOf(this.editingAreaStyleSheets, url);
		if(index === -1){
//			console.debug("dijit._editor.BuxRichText.removeStyleSheet: Style sheet "+url+" has not been applied");
			return;
		}
		delete this.editingAreaStyleSheets[index];
		win.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){
		value = !!value;
		this._set("disabled", value);
		if(!this.isLoaded){
			return;
		} // this method requires init to be complete
		var preventIEfocus = has("ie") && (this.isLoaded || !this.focusOnLoad);
		if(preventIEfocus){
			this.editNode.unselectable = "on";
		}
		this.editNode.contentEditable = !value;
		this.editNode.tabIndex = value ? "-1" : this.tabIndex;
		if(preventIEfocus){
			this.defer(function(){
				if(this.editNode){        // guard in case widget destroyed before timeout
					this.editNode.unselectable = "off";
				}
			});
		}
		if(has("mozilla") && !value && this._mozSettingProps){
			var ps = this._mozSettingProps;
			var n;
			for(n in ps){
				if(ps.hasOwnProperty(n)){
					try{
						this.document.execCommand(n, false, ps[n]);
					}catch(e2){
					}
				}
			}
		}
		this._disabledOK = true;
	},

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

	onLoad: function(/*String*/ html){
		// summary:
		//		Handler after the iframe finishes loading.
		// html: String
		//		Editor contents should be set to this value
		// tags:
		//		protected

		// TODO: rename this to _onLoad, make empty public onLoad() method, deprecate/make protected onLoadDeferred handler?

		if(!this.window.__registeredWindow){
			this.window.__registeredWindow = true;
			this._iframeRegHandle = focus.registerIframe(this.iframe);
		}

		// there's a wrapper div around the content, see _getIframeDocTxt().
		this.editNode = this.document.body.firstChild;
		var _this = this;

		// Helper code so IE and FF skip over focusing on the <iframe> and just focus on the inner <div>.
		// See #4996 IE wants to focus the BODY tag.
		this.beforeIframeNode = domConstruct.place("<div tabIndex=-1></div>", this.iframe, "before");
		this.afterIframeNode = domConstruct.place("<div tabIndex=-1></div>", this.iframe, "after");
		this.iframe.onfocus = this.document.onfocus = function(){
			_this.editNode.focus();
		};

		this.focusNode = this.editNode; // for InlineEditBox


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

		this.connect(ap, "onmouseup", "onClick"); // mouseup in the margin does not generate an onclick event

		if(has("ie")){ // IE contentEditable
			this.connect(this.document, "onmousedown", "_onIEMouseDown"); // #4996 fix focus

			// give the node Layout on IE
			// TODO: this may no longer be needed, since we've reverted IE to using an iframe,
			// not contentEditable.   Removing it would also probably remove the need for creating
			// the extra <div> in _getIframeDocTxt()
			this.editNode.style.zoom = 1.0;
		}else{
			this.connect(this.document, "onmousedown", function(){
				// Clear the moveToStart focus, as mouse
				// down will set cursor point.  Required to properly
				// work with selection/position driven plugins and clicks in
				// the window. refs: #10678
				delete this._cursorToStart;
			});
		}

		if(has("webkit")){
			//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.connect(this.document, "onmousedown", function(e){
				var t = e.target;
				if(t && (t === this.document.body || t === this.document)){
					// Since WebKit uses the inner DIV, we need to check and set position.
					// See: #12024 as to why the change was made.
					setTimeout(lang.hitch(this, "placeCursorAtEnd"), 0);
				}
			});
		}

		if(has("ie")){
			// Try to make sure 'hidden' elements aren't visible in edit mode (like browsers other than IE
			// do).  See #9103
			try{
				this.document.execCommand('RespectVisibilityInDesign', true, null);
			}catch(e){/* squelch */}
		}

		this.isLoaded = true;

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

		// Note that setValue() call will only work after isLoaded is set to true (above)

		// Set up a function to allow delaying the setValue until a callback is fired
		// This ensures extensions like dijit.Editor have a way to hold the value set
		// until plugins load (and do things like register filters).
		var setContent = lang.hitch(this, function(){
			var copyValue = this.value;
			
			this.setValue(html);
			// Defect #247392 - We added try/catch block in order to handle exception "This deferred has already been resolved".
			// This happens in Cognos Workspace (BUX), while changing tab's order on the dashdoard, which contain "Text Editor" widget(s).
			try {
				if(this.onLoadDeferred){
					this.onLoadDeferred.callback(true);
				}
			} catch (err) {
				// This error message is hard coded in DOJO in english language version only so we safely can use it to decrease the impact of code change.
				if (err.message === "This deferred has already been resolved") {
					this.setValue(copyValue);
					console.log("Caught exception: " + err.message);
				} else {
					throw err;
				}
			}
			this.onDisplayChanged();
			if(this.focusOnLoad){
				// after the document loads, then set focus after updateInterval expires so that
				// onNormalizedDisplayChanged has run to avoid input caret issues
				ready(lang.hitch(this, function(){ setTimeout(lang.hitch(this, "focus"), this.updateInterval); }));
			}
			// Save off the initial content now
			this.value = this.getValue(true);
		});
		if(this.setValueDeferred){
			this.setValueDeferred.addCallback(setContent);
		}else{
			setContent();
		}
	},

	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 === keys.TAB && this.isTabIndent){
			event.stop(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"));
			}
		}

		// Make tab and shift-tab skip over the <iframe>, going from the nested <div> to the toolbar
		// or next element after the editor.   Needed on IE<9 and firefox.
		if(e.keyCode == keys.TAB && !this.isTabIndent){
			if(e.shiftKey && !e.ctrlKey && !e.altKey){
				// focus the <iframe> so the browser will shift-tab away from it instead
				this.beforeIframeNode.focus();
			}else if(!e.shiftKey && !e.ctrlKey && !e.altKey){
				// focus node after the <iframe> so the browser will tab away from it instead
				this.afterIframeNode.focus();
			}
		}

		if(has("ie") < 9 && e.keyCode === 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
			e.stopPropagation();
			e.preventDefault();
			this.execCommand("delete");
		}

		if(has("ff")){
			if(e.keyCode === keys.PAGE_UP || e.keyCode === keys.PAGE_DOWN ){
				if(this.editNode.clientHeight >= this.editNode.scrollHeight){
					// Stop the event to prevent firefox from trapping the cursor when there is no scroll bar.
					e.preventDefault();
				}
			}
		}
		return true;
	},

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

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

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

		if(e.keyCode === keys.SHIFT ||
		   e.keyCode === keys.ALT ||
		   e.keyCode === keys.META ||
		   e.keyCode === keys.CTRL ||
		   (e.keyCode == keys.TAB && !this.isTabIndent && !e.ctrlKey && !e.altKey)){
			return true;
		}

		var c = (e.keyChar && e.keyChar.toLowerCase()) || e.keyCode,
			handlers = this._keyHandlers[c],
			args = arguments;
			
		if(handlers && !e.altKey){
			array.some(handlers, function(h){
				// treat meta- same as ctrl-, for benefit of mac users
				if(!(h.shift ^ e.shiftKey) && !(h.ctrl ^ (e.ctrlKey||e.metaKey))){ 
					if(!h.handler.apply(this, args)){
						e.preventDefault();
					}
					return true;
				}
			}, this);
		}

		// function call after the character has been inserted
		if(!this._onKeyHitch){
			this._onKeyHitch = lang.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(!lang.isArray(this._keyHandlers[key])){
			this._keyHandlers[key] = [];
		}
		//TODO: would be nice to make this a hash instead of an array for quick lookups
		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(){
		// 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 newValue = this.getValue(true);
		if(newValue !== this.value){
			this.onChange(newValue);
		}
		this._set("value", newValue);
	},

	_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.set('disabled', false);
			}
			this.inherited(arguments);
		}
	},

	// TODO: remove in 2.0
	blur: function(){
		// summary:
		//		Remove focus from this instance.
		// tags:
		//		deprecated
		if(!has("ie") && this.window.document.documentElement && this.window.document.documentElement.focus){
			this.window.document.documentElement.focus();
		}else if(win.doc.body.focus){
			win.doc.body.focus();
		}
	},

	focus: function(){
		// summary:
		//		Move focus to this editor
		if(!this.isLoaded){
			this.focusOnLoad = true;
			return;
		}
		if(this._cursorToStart){
			delete this._cursorToStart;
			if(this.editNode.childNodes){
				this.placeCursorAtStart(); // this calls focus() so return
				return;
			}
		}
		if(has("ie") < 9){
			//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/fireEvent only in IE < 11
		}else{
			// Firefox and chrome
			this.editNode.focus();
		}
	},

	// _lastUpdate: 0,
	updateInterval: 200,
	_updateTimer: null,
	onDisplayChanged: function(/*Event*/ /*===== e =====*/){
		// summary:
		//		This event will be fired every time 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 = lang.hitch(this,"onNormalizedDisplayChanged");
		}
		this._updateTimer = setTimeout(this._updateHandler, this.updateInterval);

		// Technically this should trigger a call to watch("value", ...) registered handlers,
		// but getValue() is too slow to call on every keystroke so we don't.
	},
	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, /*Anything?*/argument){
		// summary:
		//		Used as the advice function to map our
		//		normalized set of commands to those supported by the target
		//		browser.
		// tags:
		//		private

		var command = cmd.toLowerCase();
		if(command === "formatblock"){
			if(has("safari") && argument === undefined){ command = "heading"; }
		}else if(command === "hilitecolor" && !has("mozilla")){
			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;

		function isSupportedBy(browsers){
			return {
				ie: Boolean(browsers & ie),
				mozilla: Boolean(browsers & mozilla),
				webkit: Boolean(browsers & webkit),
				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 | webkit);
				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 | webkit);
				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 ((has("ie") || has("trident")) && supportedBy.ie) ||
			(has("mozilla") && supportedBy.mozilla) ||
			(has("webkit") && supportedBy.webkit) ||
			(has("opera") && 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
		if(this.focused){
			// put focus back in the iframe, unless focus has somehow been shifted out of the editor completely
			this.focus();
		}

		command = this._normalizeCommand(command, argument);
		
		if(argument !== undefined){
			if(command === "heading"){
				throw new Error("unimplemented");
			}else if(command === "formatblock" && (has("ie") || has("trident"))){
				argument = '<'+argument+'>';
			}
		}

		//Check to see if we have any over-rides for commands, they will be functions on this
		//widget of the form _commandImpl.  If we don't, fall through to the basic native
		//exec command of the browser.
		var implFunc = "_" + command + "Impl";
		if(this[implFunc]){
			returnValue = this[implFunc](argument);
		}else{
			argument = arguments.length > 1 ? argument : null;
			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.
		// command:
		//		The command to execute
		// tags:
		//		protected
		if(this.disabled || !this._disabledOK){ return false; }

		command = this._normalizeCommand(command);

		//Check to see if we have any over-rides for commands, they will be functions on this
		//widget of the form _commandEnabledImpl.  If we don't, fall through to the basic native
		//command of the browser.
		var implFunc = "_" + command + "EnabledImpl";

		if(this[implFunc]){
			return  this[implFunc](command);
		}else{
			return this._browserQueryCommandEnabled(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{
			return this.document.queryCommandState(command);
		}catch(e){
			//Squelch, occurs if editor is hidden on FF 3 (and maybe others.)
			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((has("ie") || has("trident")) && command === "formatblock"){
			r = this._native2LocalFormatNames[this.document.queryCommandValue(command)];
		}else if(has("mozilla") && command === "hilitecolor"){
			var oldValue;
			try{
				oldValue = this.document.queryCommandValue("styleWithCSS");
			}catch(e){
				oldValue = false;
			}
			this.document.execCommand("styleWithCSS", false, true);
			r = this.document.queryCommandValue(command);
			this.document.execCommand("styleWithCSS", false, oldValue);
		}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 win.withGlobal(this.window, name, selectionapi, 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(has("mozilla")){
			// TODO:  Is this branch even necessary?
			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;
					var tg = first.tagName ? first.tagName.toLowerCase() : "";
					// Collapse before childless tags.
					if(/br|input|img|base|meta|area|basefont|hr|link/.test(tg)){
						this._sCall("selectElement", [ first ]);
					}else{
						// Collapse inside tags with children.
						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(has("mozilla")){
			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 get('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(true);
	},

	setValue: function(/*String*/ html){
		// summary:
		//		This function sets the content. No undo history is preserved.
		//		Users should use set('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(lang.hitch(this, function(){
				this.setValue(html);
			}));
			return;
		}
		this._cursorToStart = true;
		if(this.textarea && (this.isClosed || !this.isLoaded)){
			this.textarea.value=html;
		}else{
			html = this._preFilterContent(html);
			var node = this.isClosed ? this.domNode : this.editNode;

			// Use &nbsp; to avoid webkit problems where editor is disabled until the user clicks it
			if(!html && has("webkit")){
				html = "&#160;";	// &nbsp;
			}
			node.innerHTML = html;
			this._preDomFilterContent(node);
		}

		this.onDisplayChanged();
		this._set("value", this.getValue(true));
	},

	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 && !has("mozilla")){ // 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");
			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);
		}

		this._set("value", this.getValue(true));
	},

	_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;
		array.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;
		array.forEach(this.contentDomPreFilters, function(ef){
			if(ef && lang.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(!lang.isString(dom)){
			dom = dom || this.editNode;
			if(this.contentDomPostFilters.length){
				if(nonDestructive){
					dom = lang.clone(dom);
				}
				array.forEach(this.contentDomPostFilters, function(ef){
					dom = ef(dom);
				});
			}
			ec = htmlapi.getChildrenHtml(dom);
		}else{
			ec = dom;
		}

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

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

		return ec;
	},

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

		var saveTextarea = dom.byId(dijit._scopeName + "._editor.BuxRichText.value");
		if(saveTextarea){
			if(saveTextarea.value){
				saveTextarea.value += this._SEPARATOR;
			}
			saveTextarea.value += this.name + this._NAME_CONTENT_SEP + this.getValue(true);
		}
	},


	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/html::_getNodeHtml() instead.
		// tags:
		//		deprecated
		kernel.deprecated('dijit.Editor::getNodeHtml is deprecated','use dijit/_editor/html::getNodeHtml instead', 2);
		return htmlapi.getNodeHtml(node); // String
	},

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

	close: function(/*Boolean?*/ save){
		// 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.
		// tags:
		//		private

		if(this.isClosed){ return; }

		if(!arguments.length){ save = true; }
		if(save){
			this._set("value", this.getValue(true));
		}

		// 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(has("ie")){
			 this.iframe.onfocus = null;
		}
		this.iframe._loadFunc = null;

		if(this._iframeRegHandle){
			this._iframeRegHandle.remove();
			delete this._iframeRegHandle;
		}

		if(this.textarea){
			var s = this.textarea.style;
			s.position = "";
			s.left = s.top = "";
			if(has("ie")){
				s.overflow = this.__overflow;
				this.__overflow = null;
			}
			this.textarea.value = this.value;
			domConstruct.destroy(this.domNode);
			this.domNode = this.textarea;
		}else{
			// Note that this destroys the iframe
			this.domNode.innerHTML = this.value;
		}
		delete this.iframe;

		domClass.remove(this.domNode, this.baseClass);
		this.isClosed = true;
		this.isLoaded = false;

		delete this.editNode;
		delete this.focusNode;

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

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

	destroy: function(){
		if(!this.isClosed){ this.close(false); }
		if(this._updateTimer){
			clearTimeout(this._updateTimer);
		}
		this.inherited(arguments);
		if(BuxRichText._globalSaveHandler){
			delete BuxRichText._globalSaveHandler[this.id];
		}
	},

	_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, '').replace(/_moz_resizing="(true|false)"/gi,''); // String
	},
	_removeWebkitBogus: function(/* String */ html){
		// summary:
		//		Post filter to remove unwanted HTML attributes generated by webkit
		// tags:
		//		private
		html = html.replace(/\sclass="webkit-block-placeholder"/gi, '');
		html = html.replace(/\sclass="apple-style-span"/gi, '');
		// For some reason copy/paste sometime adds extra meta tags for charset on
		// webkit (chrome) on mac.They need to be removed.  See: #12007"
		html = html.replace(/<meta charset=\"utf-8\" \/>/gi, '');
		return html; // String
	},
	_normalizeFontStyle: function(/* String */ html){
		// summary:
		//		Convert 'strong' and 'em' to 'b' and 'i'.
		// description:
		//		Moz can not handle strong/em tags correctly, so to help
		//		mozilla and also to normalize output, convert them to 'b' and 'i'.
		//
		//		Note the IE generates 'strong' and 'em' rather than 'b' and '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
	},

	/*****************************************************************************
		The following functions implement HTML manipulation commands for various
		browser/contentEditable implementations.  The goal of them is to enforce
		standard behaviors of them.
	******************************************************************************/

	/*** queryCommandEnabled implementations ***/

	_browserQueryCommandEnabled: function(command){
		// summary:
		//		Implementation to call to the native queryCommandEnabled of the browser.
		// command:
		//		The command to check.
		// tags:
		//		protected
		if(!command) { return false; }
		var elem = has("ie") < 9 ? this.document.selection.createRange() : this.document;
		try{
			return elem.queryCommandEnabled(command);
		}catch(e){
			return false;
		}
	},

	_createlinkEnabledImpl: function(/*===== argument =====*/){
		// summary:
		//		This function implements the test for if the create link
		//		command should be enabled or not.
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var enabled = true;
		if(has("opera")){
			var sel = this.window.getSelection();
			if(sel.isCollapsed){
				enabled = true;
			}else{
				enabled = this.document.queryCommandEnabled("createlink");
			}
		}else{
			enabled = this._browserQueryCommandEnabled("createlink");
		}
		return enabled;
	},

	_unlinkEnabledImpl: function(/*===== argument =====*/){
		// summary:
		//		This function implements the test for if the unlink
		//		command should be enabled or not.
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var enabled = true;
		if(has("mozilla") || has("webkit")){
			enabled = this._sCall("hasAncestorElement", ["a"]);
		}else{
			enabled = this._browserQueryCommandEnabled("unlink");
		}
		return enabled;
	},

	_inserttableEnabledImpl: function(/*===== argument =====*/){
		// summary:
		//		This function implements the test for if the inserttable
		//		command should be enabled or not.
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var enabled = true;
		if(has("mozilla") || has("webkit")){
			enabled = true;
		}else{
			enabled = this._browserQueryCommandEnabled("inserttable");
		}
		return enabled;
	},

	_cutEnabledImpl: function(/*===== argument =====*/){
		// summary:
		//		This function implements the test for if the cut
		//		command should be enabled or not.
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var enabled = true;
		if(has("webkit")){
			// WebKit deems clipboard activity as a security threat and natively would return false
			var sel = this.window.getSelection();
			if(sel){ sel = sel.toString(); }
			enabled = !!sel;
		}else{
			enabled = this._browserQueryCommandEnabled("cut");
		}
		return enabled;
	},

	_copyEnabledImpl: function(/*===== argument =====*/){
		// summary:
		//		This function implements the test for if the copy
		//		command should be enabled or not.
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var enabled = true;
		if(has("webkit")){
			// WebKit deems clipboard activity as a security threat and natively would return false
			var sel = this.window.getSelection();
			if(sel){ sel = sel.toString(); }
			enabled = !!sel;
		}else{
			enabled = this._browserQueryCommandEnabled("copy");
		}
		return enabled;
	},

	_pasteEnabledImpl: function(/*===== argument =====*/){
		// summary:c
		//		This function implements the test for if the paste
		//		command should be enabled or not.
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var enabled = true;
		if(has("webkit")){
			return true;
		}else{
			enabled = this._browserQueryCommandEnabled("paste");
		}
		return enabled;
	},

	/*** execCommand implementations ***/

	_inserthorizontalruleImpl: function(argument){
		// summary:
		//		This function implements the insertion of HTML 'HR' tags.
		//		into a point on the page.  IE doesn't to it right, so
		//		we have to use an alternate form
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		if(has("ie")){
			return this._inserthtmlImpl("<hr>");
		}
		return this.document.execCommand("inserthorizontalrule", false, argument);
	},

	_unlinkImpl: function(argument){
		// summary:
		//		This function implements the unlink of an 'a' tag.
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		if((this.queryCommandEnabled("unlink")) && (has("mozilla") || has("webkit"))){
			var a = this._sCall("getAncestorElement", [ "a" ]);
			this._sCall("selectElement", [ a ]);
			return this.document.execCommand("unlink", false, null);
		}
		return this.document.execCommand("unlink", false, argument);
	},

	_hilitecolorImpl: function(argument){
		// summary:
		//		This function implements the hilitecolor command
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var returnValue;
		var isApplied = this._handleTextColorOrProperties("hilitecolor", argument);
		if(!isApplied){
			if(has("mozilla")){
				// mozilla doesn't support hilitecolor properly when useCSS is
				// set to false (bugzilla #279330)
				this.document.execCommand("styleWithCSS", false, true);
				console.log("Executing color command.");
				returnValue = this.document.execCommand("hilitecolor", false, argument);
				this.document.execCommand("styleWithCSS", false, false);
			}else{
				returnValue = this.document.execCommand("hilitecolor", false, argument);
			}
		}
		return returnValue;
	},

	_backcolorImpl: function(argument){
		// summary:
		//		This function implements the backcolor command
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		if(has("ie")){
			// 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 = argument ? argument : null;
		}
		var isApplied = this._handleTextColorOrProperties("backcolor", argument);
		if(!isApplied){
			isApplied = this.document.execCommand("backcolor", false, argument);
		}
		return isApplied;
	},

	_forecolorImpl: function(argument){
		// summary:
		//		This function implements the forecolor command
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		if(has("ie")){
			// 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 = argument? argument : null;
		}
		var isApplied = false;
		isApplied = this._handleTextColorOrProperties("forecolor", argument);
		if(!isApplied){
			isApplied = this.document.execCommand("forecolor", false, argument);
		}
		return isApplied;
	},

	_inserthtmlImpl: function(argument){
		// summary:
		//		This function implements the insertion of HTML content into
		//		a point on the page.
		// argument:
		//		The content to insert, if any.
		// tags:
		//		protected
		argument = this._preFilterContent(argument);
		var rv = true;
		if(has("ie") < 9){
			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();
		}else if(has("trident") < 8){
			var insertRange;
			var selection = rangeapi.getSelection(this.window);
			if(selection && selection.rangeCount && selection.getRangeAt){
				insertRange = selection.getRangeAt(0);
				insertRange.deleteContents();

				var div = domConstruct.create('div');
				div.innerHTML = argument;
				var node, lastNode;
				var n = this.document.createDocumentFragment();
				while((node = div.firstChild)){
					lastNode = n.appendChild(node);
				}
				insertRange.insertNode(n);
				if(lastNode) {
					insertRange = insertRange.cloneRange();
					insertRange.setStartAfter(lastNode);
					insertRange.collapse(false);
					selection.removeAllRanges();
					selection.addRange(insertRange);
				}
			}
		}else if(has("mozilla") && !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{
			rv = this.document.execCommand("inserthtml", false, argument);
		}
		return rv;
	},

	_boldImpl: function(argument){
		// summary:
		//		This function implements an over-ride of the bold command.
		// argument:
		//		Not used, operates by selection.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			this._adaptIESelection();		
			applied = this._adaptIEFormatAreaAndExec("bold");
		}
		if(!applied){
			applied = this.document.execCommand("bold", false, argument);
		}
		return applied;
	},

	_italicImpl: function(argument){
		// summary:
		//		This function implements an over-ride of the italic command.
		// argument:
		//		Not used, operates by selection.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			this._adaptIESelection();			
			applied = this._adaptIEFormatAreaAndExec("italic");
		}
		if(!applied){
			applied = this.document.execCommand("italic", false, argument);
		}
		return applied;
	},

	_underlineImpl: function(argument){
		// summary:
		//		This function implements an over-ride of the underline command.
		// argument:
		//		Not used, operates by selection.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			this._adaptIESelection();			
			applied = this._adaptIEFormatAreaAndExec("underline");
		}
		if(!applied){
			applied = this.document.execCommand("underline", false, argument);
		}
		return applied;
	},

	_strikethroughImpl: function(argument){
		// summary:
		//		This function implements an over-ride of the strikethrough command.
		// argument:
		//		Not used, operates by selection.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			this._adaptIESelection();			
			applied = this._adaptIEFormatAreaAndExec("strikethrough");
		}
		if(!applied){
			applied = this.document.execCommand("strikethrough", false, argument);
		}
		return applied;
	},

	_superscriptImpl: function(argument){
		// summary:
		//		This function implements an over-ride of the superscript command.
		// argument:
		//		Not used, operates by selection.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			this._adaptIESelection();			
			applied = this._adaptIEFormatAreaAndExec("superscript");
		}
		if(!applied){
			applied = this.document.execCommand("superscript", false, argument);
		}
		return applied;
	},

	_subscriptImpl: function(argument){
		// summary:
		//		This function implements an over-ride of the superscript command.
		// argument:
		//		Not used, operates by selection.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			this._adaptIESelection();			
			applied = this._adaptIEFormatAreaAndExec("subscript");
			
		}
		if(!applied){
			applied = this.document.execCommand("subscript", false, argument);
		}
		return applied;
	},
	
	_fontnameImpl: function(argument){
		// summary:
		//		This function implements the fontname command
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var isApplied;
		if(has("ie") || has("trident")){
			isApplied = this._handleTextColorOrProperties("fontname", argument);
		}
		if(!isApplied){
			isApplied = this.document.execCommand("fontname", false, argument);
		}
		return isApplied;
	},

	_fontsizeImpl: function(argument){
		// summary:
		//		This function implements the fontsize command
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var isApplied;
		if(has("ie") || has("trident")){
			isApplied = this._handleTextColorOrProperties("fontsize", argument);
		}
		if(!isApplied){
			isApplied = this.document.execCommand("fontsize", false, argument);
		}
		return isApplied;
	},
	
	_insertorderedlistImpl: function(argument){
		// summary:
		//		This function implements the insertorderedlist command
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			applied = this._adaptIEList("insertorderedlist", argument);
		}
		if(!applied){
			applied = this.document.execCommand("insertorderedlist", false, argument);
		}
		return applied;
	},
	
	_insertunorderedlistImpl: function(argument){
		// summary:
		//		This function implements the insertunorderedlist command
		// argument:
		//		arguments to the exec command, if any.
		// tags:
		//		protected
		var applied = false;
		if(has("ie") || has("trident")){
			applied = this._adaptIEList("insertunorderedlist", argument);
		}
		if(!applied){
			applied = this.document.execCommand("insertunorderedlist", false, argument);
		}
		return applied;
	},
	
	getHeaderHeight: function(){
		// summary:
		//		A function for obtaining the height of the header node
		return this._getNodeChildrenHeight(this.header); // Number
	},

	getFooterHeight: function(){
		// summary:
		//		A function for obtaining the height of the footer node
		return this._getNodeChildrenHeight(this.footer); // Number
	},

	_getNodeChildrenHeight: function(node){
		// summary:
		//		An internal function for computing the cumulative height of all child nodes of 'node'
		// node:
		//		The node to process the children of;
		var h = 0;
		if(node && node.childNodes){
			// IE didn't compute it right when position was obtained on the node directly is some cases,
			// so we have to walk over all the children manually.
			var i;
			for(i = 0; i < node.childNodes.length; i++){
				var size = domGeometry.position(node.childNodes[i]);
				h += size.h;
			}
		}
		return h; // Number
	},

	_isNodeEmpty: function(node, startOffset){
		// summary:
		//		Function to test if a node is devoid of real content.
		// node:
		//		The node to check.
		// tags:
		//		private.
		if(node.nodeType === 1/*element*/){
			if(node.childNodes.length > 0){
				return this._isNodeEmpty(node.childNodes[0], startOffset);
	}
			return true;
		}else if(node.nodeType === 3/*text*/){
			return (node.nodeValue.substring(startOffset) === "");
		}
		return false;
	},

	_removeStartingRangeFromRange: function(node, range){
		// summary:
		//		Function to adjust selection range by removing the current
		//		start node.
		// node:
		//		The node to remove from the starting range.
		// range:
		//		The range to adapt.
		// tags:
		//		private
		if(node.nextSibling){
			range.setStart(node.nextSibling,0);
		}else{
			var parent = node.parentNode;
			while(parent && parent.nextSibling == null){
				//move up the tree until we find a parent that has another node, that node will be the next node
				parent = parent.parentNode;
			}
			if(parent){
				range.setStart(parent.nextSibling,0);
			}
		}
		return range;
	},

	_adaptIESelection: function(){
		// summary:
		//		Function to adapt the IE range by removing leading 'newlines'
		//		Needed to fix issue with bold/italics/underline not working if
		//		range included leading 'newlines'.
		//		In IE, if a user starts a selection at the very end of a line,
		//		then the native browser commands will fail to execute correctly.
		//		To work around the issue,  we can remove all empty nodes from
		//		the start of the range selection.
		var selection = rangeapi.getSelection(this.window);
		if(selection && selection.rangeCount && !selection.isCollapsed){
			var range = selection.getRangeAt(0);
			var firstNode = range.startContainer;
			var startOffset = range.startOffset;

			while(firstNode.nodeType === 3/*text*/ && startOffset >= firstNode.length && firstNode.nextSibling){
				//traverse the text nodes until we get to the one that is actually highlighted
				startOffset = startOffset - firstNode.length;
				firstNode = firstNode.nextSibling;
			}

			//Remove the starting ranges until the range does not start with an empty node.
			var lastNode=null;
			while(this._isNodeEmpty(firstNode, startOffset) && firstNode !== lastNode){
				lastNode =firstNode; //this will break the loop in case we can't find the next sibling
				range = this._removeStartingRangeFromRange(firstNode, range); //move the start container to the next node in the range
				firstNode = range.startContainer;
				startOffset = 0; //start at the beginning of the new starting range
			}
			selection.removeAllRanges();// this will work as long as users cannot select multiple ranges. I have not been able to do that in the editor.
			selection.addRange(range);
		}
	},
	
	_adaptIEFormatAreaAndExec: function(command){
		// summary:
		//		Function to handle IE's quirkiness regarding how it handles
		//		format commands on a word.  This involves a lit of node splitting
		//		and format cloning.
		// command:
		//		The format command, needed to check if the desired
		//		command is true or not.
		var selection = rangeapi.getSelection(this.window);
		var doc = this.document;
		var rs, ret, range, txt, startNode, endNode, breaker, sNode;
		if(command && selection && selection.isCollapsed){
			var isApplied = this.queryCommandValue(command);
			if(isApplied){
				
				// We have to split backwards until we hit the format
				var nNames = this._tagNamesForCommand(command);
				range = selection.getRangeAt(0);
				var fs = range.startContainer;
				if(fs.nodeType === 3){
					var offset = range.endOffset;
					if(fs.length < offset){
						//We are not looking from the right node, try to locate the correct one
						ret = this._adjustNodeAndOffset(rs, offset);
						fs = ret.node;
						offset = ret.offset;
					}
				}									
				var topNode;
				while(fs && fs !== this.editNode){
					// We have to walk back and see if this is still a format or not.
					// Hm, how do I do this?
					var tName = fs.tagName? fs.tagName.toLowerCase() : "";
					if(array.indexOf(nNames, tName) > -1){
						topNode = fs;
						break;
					}
					fs = fs.parentNode;
				}

				// Okay, we have a stopping place, time to split things apart.
				if(topNode){
					// Okay, we know how far we have to split backwards, so we have to split now.
					rs = range.startContainer;
					var newblock = doc.createElement(topNode.tagName);
					domConstruct.place(newblock, topNode, "after");
					if(rs && rs.nodeType === 3){
						// Text node, we have to split it.
						var nodeToMove, tNode;
						var endOffset = range.endOffset;
						if(rs.length < endOffset){
							//We are not splitting the right node, try to locate the correct one
							ret = this._adjustNodeAndOffset(rs, endOffset);
							rs = ret.node;
							endOffset = ret.offset;
						}
		
						txt = rs.nodeValue;
						startNode = doc.createTextNode(txt.substring(0, endOffset));
						var endText = txt.substring(endOffset, txt.length);
						if(endText){
							endNode = doc.createTextNode(endText);
						}
						// Place the split, then remove original nodes.
						domConstruct.place(startNode, rs, "before");
						if(endNode){
							breaker = doc.createElement("span");
							breaker.className = "ieFormatBreakerSpan";
							domConstruct.place(breaker, rs, "after");
							domConstruct.place(endNode, breaker, "after");
							endNode = breaker;
						}
						domConstruct.destroy(rs);
						
						// Okay, we split the text.  Now we need to see if we're
						// parented to the block element we're splitting and if
						// not, we have to split all the way up.  Ugh.
						var parentC = startNode.parentNode;
						var tagList = [];
						var tagData;
						while(parentC !== topNode){
							var tg = parentC.tagName;
							tagData = {tagName: tg};
							tagList.push(tagData);
														
							var newTg = doc.createElement(tg);
							// Clone over any 'style' data.
							if(parentC.style){
								if(newTg.style){
									if(parentC.style.cssText){
										newTg.style.cssText = parentC.style.cssText;
										tagData.cssText = parentC.style.cssText;
									}
								}
							}
							// If font also need to clone over any font data.
							if(parentC.tagName === "FONT"){
								if(parentC.color){
									newTg.color = parentC.color;
									tagData.color = parentC.color;
								}
								if(parentC.face){
									newTg.face = parentC.face;
									tagData.face = parentC.face;
								}
								if(parentC.size){  // this check was necessary on IE
									newTg.size = parentC.size;
									tagData.size = parentC.size;
								}
							}
							if(parentC.className){
								newTg.className = parentC.className;
								tagData.className = parentC.className;
							}
							
							// Now move end node and every sibling 
							// after it over into the new tag.
							if(endNode){
								nodeToMove = endNode;
								while(nodeToMove){
									tNode = nodeToMove.nextSibling;
									newTg.appendChild(nodeToMove);
									nodeToMove = tNode;
								}
							}
							if(newTg.tagName == parentC.tagName){
								breaker = doc.createElement("span");
								breaker.className = "ieFormatBreakerSpan";
								domConstruct.place(breaker, parentC, "after");
								domConstruct.place(newTg, breaker, "after");
							}else{
								domConstruct.place(newTg, parentC, "after");
							}
							startNode = parentC;
							endNode = newTg;
							parentC = parentC.parentNode;
						}

						// Lastly, move the split out all the split tags 
						// to the new block as they should now be split properly.
						if(endNode){
							nodeToMove = endNode;
							if(nodeToMove.nodeType === 1 || (nodeToMove.nodeType === 3 && nodeToMove.nodeValue)){
								// Non-blank text and non-text nodes need to clear out that blank space
								// before moving the contents.
								newblock.innerHTML = "";
							}
							while(nodeToMove){
								tNode = nodeToMove.nextSibling;
								newblock.appendChild(nodeToMove);
								nodeToMove = tNode;
							}
						}
						
						// We had intermediate tags, we have to now recreate them inbetween the split
						// and restore what styles, classnames, etc, we can.  
						if(tagList.length){
							tagData = tagList.pop();
							var newContTag = doc.createElement(tagData.tagName);
							if(tagData.cssText && newContTag.style){
								newContTag.style.cssText = tagData.cssText;
							}
							if(tagData.className){
								newContTag.className = tagData.className;
							}
							if(tagData.tagName === "FONT"){
								if(tagData.color){
									newContTag.color = tagData.color;
								}
								if(tagData.face){
									newContTag.face = tagData.face;
								}
								if(tagData.size){ 
									newContTag.size = tagData.size;
								}
							}								
							domConstruct.place(newContTag, newblock, "before");
							while(tagList.length){
								tagData = tagList.pop();
								var newTgNode = doc.createElement(tagData.tagName);
								if(tagData.cssText && newTgNode.style){
									newTgNode.style.cssText = tagData.cssText;
								}
								if(tagData.className){
									newTgNode.className = tagData.className;
								}
								if(tagData.tagName === "FONT"){
									if(tagData.color){
										newTgNode.color = tagData.color;
									}
									if(tagData.face){
										newTgNode.face = tagData.face;
									}
									if(tagData.size){ 
										newTgNode.size = tagData.size;
									}
								}	
								newContTag.appendChild(newTgNode);
								newContTag = newTgNode;
							}							
							
							// Okay, everything is theoretically split apart and removed from the content
							// so insert the dummy text to select, select it, then
							// clear to position cursor.
							sNode = doc.createTextNode(".");
							breaker.appendChild(sNode);
							newContTag.appendChild(sNode);
							win.withGlobal(this.window, lang.hitch(this, function(){
								var newrange = rangeapi.create();
								newrange.setStart(sNode, 0);
								newrange.setEnd(sNode, sNode.length);
								selection.removeAllRanges();
								selection.addRange(newrange);
								selectionapi.collapse(false);
								sNode.parentNode.innerHTML = "";
							}));							
						}else{
							// No extra tags, so we have to insert a breaker point and rely
							// on filters to remove it later.
							breaker = doc.createElement("span");
							breaker.className="ieFormatBreakerSpan";
							sNode = doc.createTextNode(".");
							breaker.appendChild(sNode);
							domConstruct.place(breaker, newblock, "before");
							win.withGlobal(this.window, lang.hitch(this, function(){
								var newrange = rangeapi.create();
								newrange.setStart(sNode, 0);
								newrange.setEnd(sNode, sNode.length);
								selection.removeAllRanges();
								selection.addRange(newrange);
								selectionapi.collapse(false);
								sNode.parentNode.innerHTML = "";
							}));
						}
						if(!newblock.firstChild){
							// Empty, we don't need it.  Split was at end or similar
							// So, remove it.
							domConstruct.destroy(newblock);
						}					
						return true;
					}
				}
				return false;
			}else{
				range = selection.getRangeAt(0);
				rs = range.startContainer;
				if(rs && rs.nodeType === 3){
					// Text node, we have to split it.
					win.withGlobal(this.window, lang.hitch(this, function(){
						var offset = range.startOffset;
						if(rs.length < offset){
							//We are not splitting the right node, try to locate the correct one
							ret = this._adjustNodeAndOffset(rs, offset);
							rs = ret.node;
							offset = ret.offset;
						}
						txt = rs.nodeValue;
						startNode = doc.createTextNode(txt.substring(0, offset));
						var endText = txt.substring(offset);
						if(endText !== ""){
							endNode = doc.createTextNode(txt.substring(offset));
						}
						// Create a space, we'll select and bold it, so 
						// the whole word doesn't get bolded
						breaker = doc.createElement("span");
						sNode = doc.createTextNode(".");
						breaker.appendChild(sNode);
						if(startNode.length){
							domConstruct.place(startNode, rs, "after");
						}else{
							startNode = rs;
						}
						domConstruct.place(breaker, startNode, "after");
						if(endNode){
							domConstruct.place(endNode, breaker, "after");
						}
						domConstruct.destroy(rs);
						var newrange = rangeapi.create();
						newrange.setStart(sNode, 0);
						newrange.setEnd(sNode, sNode.length);
						selection.removeAllRanges();
						selection.addRange(newrange);
						doc.execCommand(command);
						domConstruct.place(breaker.firstChild, breaker, "before");
						domConstruct.destroy(breaker);
						newrange.setStart(sNode, 0);
						newrange.setEnd(sNode, sNode.length);
						selection.removeAllRanges();
						selection.addRange(newrange);
						selectionapi.collapse(false);
						sNode.parentNode.innerHTML = "";
					}));
					return true;
				}
			}
		}else{
			return false;
		}
	},
	
	_adaptIEList: function(command /*===== , argument =====*/){
		// summary:
		//		This function handles normalizing the IE list behavior as 
		//		much as possible.
		// command:
		//		The list command to execute.
		// argument:
		//		Any additional argument.
		// tags:
		//		private
		var selection = rangeapi.getSelection(this.window);
		if(selection.isCollapsed){
			// In the case of no selection, lets commonize the behavior and
			// make sure that it indents if needed.
			if(selection.rangeCount && !this.queryCommandValue(command)){
				var range = selection.getRangeAt(0);
				var sc = range.startContainer;
				if(sc && sc.nodeType == 3){
					// text node.  Lets see if there is a node before it that isn't
					// some sort of breaker.
					if(!range.startOffset){
						// We're at the beginning of a text area.  It may have been br split
						// Who knows?  In any event, we must create the list manually
						// or IE may shove too much into the list element.  It seems to
						// grab content before the text node too if it's br split.
						// Why can't IE work like everyone else?
						win.withGlobal(this.window, lang.hitch(this, function(){
							// Create a space, we'll select and bold it, so 
							// the whole word doesn't get bolded
							var lType = "ul";
							if(command === "insertorderedlist"){
								lType = "ol";
							}
							var list = domConstruct.create(lType);
							var li = domConstruct.create("li", null, list);
							domConstruct.place(list, sc, "before");
							// Move in the text node as part of the li.
							li.appendChild(sc);
							// We need a br after it or the enter key handler
							// sometimes throws errors.
							domConstruct.create("br", null, list, "after");
							// Okay, now lets move our cursor to the beginning.
							var newrange = rangeapi.create();
							newrange.setStart(sc, 0);
							newrange.setEnd(sc, sc.length);
							selection.removeAllRanges();
							selection.addRange(newrange);
							selectionapi.collapse(true);
						}));
						return true;
					}
				}
			}
		}
		return false;
	},
	
	_handleTextColorOrProperties: function(command, argument){
		// summary:
		//		This function handles appplying text color as best it is 
		//		able to do so when the selection is collapsed, making the
		//		behavior cross-browser consistent. It also handles the name
		//		and size for IE.
		// command:
		//		The command.
		// argument:
		//		Any additional arguments.
		// tags:
		//		private
		var selection = rangeapi.getSelection(this.window);
		var doc = this.document;
		var rs, ret, range, txt, startNode, endNode, breaker, sNode;
		argument = argument || null;
		if(command && selection && selection.isCollapsed){
			if(selection.rangeCount){
				range = selection.getRangeAt(0);
				rs = range.startContainer;
				if(rs && rs.nodeType === 3){
					// Text node, we have to split it.
					win.withGlobal(this.window, lang.hitch(this, function(){
						var offset = range.startOffset;
						if(rs.length < offset){
							//We are not splitting the right node, try to locate the correct one
							ret = this._adjustNodeAndOffset(rs, offset);
							rs = ret.node;
							offset = ret.offset;
						}
						txt = rs.nodeValue;
						startNode = doc.createTextNode(txt.substring(0, offset));
						var endText = txt.substring(offset);
						if(endText !== ""){
							endNode = doc.createTextNode(txt.substring(offset));
						}
						// Create a space, we'll select and bold it, so 
						// the whole word doesn't get bolded
						breaker = domConstruct.create("span");
						sNode = doc.createTextNode(".");
						breaker.appendChild(sNode);
						// Create a junk node to avoid it trying to stlye the breaker.
						// This will get destroyed later.
						var extraSpan = domConstruct.create("span");
						breaker.appendChild(extraSpan);
						if(startNode.length){
							domConstruct.place(startNode, rs, "after");
						}else{
							startNode = rs;
						}
						domConstruct.place(breaker, startNode, "after");
						if(endNode){
							domConstruct.place(endNode, breaker, "after");
						}
						domConstruct.destroy(rs);
						var newrange = rangeapi.create();
						newrange.setStart(sNode, 0);
						newrange.setEnd(sNode, sNode.length);
						selection.removeAllRanges();
						selection.addRange(newrange);
						if(has("webkit")){
							// WebKit is frustrating with positioning the cursor. 
							// It stinks to have a selected space, but there really
							// isn't much choice here.
							var style = "color";
							if(command === "hilitecolor" || command === "backcolor"){
								style = "backgroundColor";
							}
							domStyle.set(breaker, style, argument);
							selectionapi.remove();
							domConstruct.destroy(extraSpan);
							breaker.innerHTML = "&#160;";	// &nbsp;
							selectionapi.selectElement(breaker);
							this.focus();
						}else{
							this.execCommand(command, argument);
							domConstruct.place(breaker.firstChild, breaker, "before");
							domConstruct.destroy(breaker);
							newrange.setStart(sNode, 0);
							newrange.setEnd(sNode, sNode.length);
							selection.removeAllRanges();
							selection.addRange(newrange);
							selectionapi.collapse(false);
							sNode.parentNode.removeChild(sNode);
						}
					}));
					return true;
				}
			}				
		}
		return false;
	},
	
	_adjustNodeAndOffset: function(/*DomNode*/node, /*Int*/offset){
		// summary:
		//		In the case there are multiple text nodes in a row the offset may not be within the node.  
		//		If the offset is larger than the node length, it will attempt to find
		//		the next text sibling until it locates the text node in which the offset refers to
		// node:
		//		The node to check.
		// offset:
		//		The position to find within the text node
		// tags:
		//		private.
		while(node.length < offset && node.nextSibling && node.nextSibling.nodeType === 3){
			//Adjust the offset and node in the case of multiple text nodes in a row
			offset = offset - node.length;
			node = node.nextSibling;
		}
		return {"node": node, "offset": offset};
	},
	
	_tagNamesForCommand: function(command){
		// summary:
		//		Function to return the tab names that are associated
		//		with a particular style.
		// command: String
		//		The command to return tags for.
		// tags:
		//		private
		if(command === "bold"){
			return ["b", "strong"];
		}else if(command === "italic"){
			return ["i","em"];
		}else if(command === "strikethrough"){
			return ["s", "strike"];
		}else if(command === "superscript"){
			return ["sup"];
		}else if(command === "subscript"){
			return ["sub"];
		}else if(command === "underline"){
			return ["u"];
		}	
		return [];
	},

	_stripBreakerNodes: function(node){
		// summary:
		//		Function for stripping out the breaker spans inserted by the formatting command.
		//		Registered as a filter for IE, handles the breaker spans needed to fix up
		//		How bold/italic/etc, work when selection is collapsed (single cursor).
		win.withGlobal(this.window, lang.hitch(this, function(){
			var breakers = query(".ieFormatBreakerSpan", node);
			var i;
			for(i = 0; i < breakers.length; i++){
				var b = breakers[i];
				while(b.firstChild){
					domConstruct.place(b.firstChild, b, "before");
				}
				domConstruct.destroy(b);
			}		
		}));
		return node;
	}
});

return BuxRichText;

});