Version 3.17.2

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File: editor/js/frame.js

 /*jshint maxlen: 500 */
 /**
 * Creates a wrapper around an iframe. It loads the content either from a local
 * file or from script and creates a local YUI instance bound to that new window and document.
 * @class Frame
 * @for Frame
 * @extends Base
 * @constructor
 * @module editor
 * @submodule frame
 */
 var Lang = Y.Lang,
 EVENT_CONTENT_READY = 'contentready',
 HOST = 'host',
 Frame = function() {
 Frame.superclass.constructor.apply(this, arguments);
 };
 Y.extend(Frame, Y.Plugin.Base, {
 /**
 * @private
 * @property _ready
 * @description Internal reference set when the content is ready.
 * @type Boolean
 */
 _ready: null,
 /**
 * @private
 * @property _rendered
 * @description Internal reference set when render is called.
 * @type Boolean
 */
 _rendered: null,
 /**
 * @private
 * @property _iframe
 * @description Internal Node reference to the iFrame or the window
 * @type Node
 */
 _iframe: null,
 /**
 * @private
 * @property _instance
 * @description Internal reference to the YUI instance bound to the iFrame or window
 * @type YUI
 */
 _instance: null,
 /**
 * @private
 * @method _create
 * @description Create the iframe or Window and get references to the Document & Window
 * @return {Object} Hash table containing references to the new Document & Window
 */
 _create: function(cb) {
 var res, html = '', timer,
 //if the src attr is different than the default, don't create the document
 create = (this.get('src') === Frame.ATTRS.src.value),
 extra_css = ((this.get('extracss')) ? '<style id="extra_css">' + this.get('extracss') + '</style>' : '');
 this._iframe = Y.one(Y.config.doc.createElement('iframe'));
 this._iframe.setAttrs(Frame.IFRAME_ATTRS);
 this._iframe.setStyle('visibility', 'hidden');
 this._iframe.set('src', this.get('src'));
 this.get('container').append(this._iframe);
 this._iframe.set('height', '99%');
 if (create) {
 Y.log('Creating the document from javascript', 'info', 'frame');
 html = Y.Lang.sub(Frame.PAGE_HTML, {
 DIR: this.get('dir'),
 LANG: this.get('lang'),
 TITLE: this.get('title'),
 META: Frame.META,
 LINKED_CSS: this.get('linkedcss'),
 CONTENT: this.get('content'),
 BASE_HREF: this.get('basehref'),
 DEFAULT_CSS: Frame.DEFAULT_CSS,
 EXTRA_CSS: extra_css
 });
 if (Y.config.doc.compatMode !== 'BackCompat') {
 Y.log('Adding Doctype to frame: ' + Frame.getDocType(), 'info', 'frame');
 //html = Frame.DOC_TYPE + "\n" + html;
 html = Frame.getDocType() + "\n" + html;
 } else {
 Y.log('DocType skipped because we are in BackCompat Mode.', 'warn', 'frame');
 }
 Y.log('Injecting content into iframe', 'info', 'frame');
 }
 res = this._resolveWinDoc();
 if (html) {
 Y.log('Writing HTML to new document', 'info', 'frame');
 res.doc.open();
 res.doc.write(html);
 res.doc.close();
 }
 if (!res.doc.documentElement) {
 Y.log('document.documentElement was not found, running timer', 'warn', 'frame');
 timer = Y.later(1, this, function() {
 if (res.doc && res.doc.documentElement) {
 Y.log('document.documentElement found inside timer', 'info', 'frame');
 cb(res);
 timer.cancel();
 }
 }, null, true);
 } else {
 Y.log('document.documentElement found', 'info', 'frame');
 cb(res);
 }
 },
 /**
 * @private
 * @method _resolveWinDoc
 * @description Resolves the document and window from an iframe or window instance
 * @param {Object} c The YUI Config to add the window and document to
 * @return {Object} Object hash of window and document references, if a YUI config was passed, it is returned.
 */
 _resolveWinDoc: function(c) {
 var config = (c) ? c : {};
 config.win = Y.Node.getDOMNode(this._iframe.get('contentWindow'));
 config.doc = Y.Node.getDOMNode(this._iframe.get('contentWindow.document'));
 if (!config.doc) {
 config.doc = Y.config.doc;
 }
 if (!config.win) {
 config.win = Y.config.win;
 }
 return config;
 },
 /**
 * @private
 * @method _onDomEvent
 * @description Generic handler for all DOM events fired by the iframe or window. This handler
 * takes the current EventFacade and augments it to fire on the Frame host. It adds two new properties
 * to the EventFacade called frameX and frameY which adds the scroll and xy position of the iframe
 * to the original pageX and pageY of the event so external nodes can be positioned over the frame.
 * @param {EventFacade} e
 */
 _onDomEvent: function(e) {
 var xy, node;
 if (!Y.Node.getDOMNode(this._iframe)) {
 //The iframe is null for some reason, bail on sending events.
 return;
 }
 //Y.log('onDOMEvent: ' + e.type, 'info', 'frame');
 e.frameX = e.frameY = 0;
 if (e.pageX > 0 || e.pageY > 0) {
 if (e.type.substring(0, 3) !== 'key') {
 node = this._instance.one('win');
 xy = this._iframe.getXY();
 e.frameX = xy[0] + e.pageX - node.get('scrollLeft');
 e.frameY = xy[1] + e.pageY - node.get('scrollTop');
 }
 }
 e.frameTarget = e.target;
 e.frameCurrentTarget = e.currentTarget;
 e.frameEvent = e;
 this.fire('dom:' + e.type, e);
 },
 initializer: function() {
 var host = this.get(HOST);
 if (host) {
 host.frame = this;
 }
 this.publish('ready', {
 emitFacade: true,
 defaultFn: this._defReadyFn
 });
 },
 destructor: function() {
 var inst = this.getInstance();
 inst.one('doc').detachAll();
 inst = null;
 this._iframe.remove();
 },
 /**
 * @private
 * @method _DOMPaste
 * @description Simple pass thru handler for the paste event so we can do content cleanup
 * @param {EventFacade} e
 */
 _DOMPaste: function(e) {
 var inst = this.getInstance(),
 data = '', win = inst.config.win;
 if (e._event.originalTarget) {
 data = e._event.originalTarget;
 }
 if (e._event.clipboardData) {
 data = e._event.clipboardData.getData('Text');
 }
 if (win.clipboardData) {
 data = win.clipboardData.getData('Text');
 if (data === '') { // Could be empty, or failed
 // Verify failure
 if (!win.clipboardData.setData('Text', data)) {
 data = null;
 }
 }
 }
 e.frameTarget = e.target;
 e.frameCurrentTarget = e.currentTarget;
 e.frameEvent = e;
 if (data) {
 e.clipboardData = {
 data: data,
 getData: function() {
 return data;
 }
 };
 } else {
 Y.log('Failed to collect clipboard data', 'warn', 'frame');
 e.clipboardData = null;
 }
 this.fire('dom:paste', e);
 },
 /**
 * @private
 * @method _defReadyFn
 * @description Binds DOM events, sets the iframe to visible and fires the ready event
 */
 _defReadyFn: function() {
 var inst = this.getInstance();
 Y.each(Frame.DOM_EVENTS, function(v, k) {
 var fn = Y.bind(this._onDomEvent, this),
 kfn = ((Y.UA.ie && Frame.THROTTLE_TIME > 0) ? Y.throttle(fn, Frame.THROTTLE_TIME) : fn);
 if (!inst.Node.DOM_EVENTS[k]) {
 inst.Node.DOM_EVENTS[k] = 1;
 }
 if (v === 1) {
 if (k !== 'focus' && k !== 'blur' && k !== 'paste') {
 //Y.log('Adding DOM event to frame: ' + k, 'info', 'frame');
 if (k.substring(0, 3) === 'key') {
 //Throttle key events in IE
 inst.on(k, kfn, inst.config.doc);
 } else {
 inst.on(k, fn, inst.config.doc);
 }
 }
 }
 }, this);
 inst.Node.DOM_EVENTS.paste = 1;
 inst.on('paste', Y.bind(this._DOMPaste, this), inst.one('body'));
 //Adding focus/blur to the window object
 inst.on('focus', Y.bind(this._onDomEvent, this), inst.config.win);
 inst.on('blur', Y.bind(this._onDomEvent, this), inst.config.win);
 inst.__use = inst.use;
 inst.use = Y.bind(this.use, this);
 this._iframe.setStyles({
 visibility: 'inherit'
 });
 inst.one('body').setStyle('display', 'block');
 },
 /**
 * It appears that having a BR tag anywhere in the source "below" a table with a percentage width (in IE 7 & 8)
 * if there is any TEXTINPUT's outside the iframe, the cursor will rapidly flickr and the CPU would occasionally
 * spike. This method finds all <BR>'s below the sourceIndex of the first table. Does some checks to see if they
 * can be modified and replaces then with a <WBR> so the layout will remain in tact, but the flickering will
 * no longer happen.
 * @method _fixIECursors
 * @private
 */
 _fixIECursors: function() {
 var inst = this.getInstance(),
 tables = inst.all('table'),
 brs = inst.all('br'), si;
 if (tables.size() && brs.size()) {
 //First Table
 si = tables.item(0).get('sourceIndex');
 brs.each(function(n) {
 var p = n.get('parentNode'),
 c = p.get('children'), b = p.all('>br');
 if (p.test('div')) {
 if (c.size() > 2) {
 n.replace(inst.Node.create('<wbr>'));
 } else {
 if (n.get('sourceIndex') > si) {
 if (b.size()) {
 n.replace(inst.Node.create('<wbr>'));
 }
 } else {
 if (b.size() > 1) {
 n.replace(inst.Node.create('<wbr>'));
 }
 }
 }
 }
 });
 }
 },
 /**
 * @private
 * @method _onContentReady
 * @description Called once the content is available in the frame/window and calls the final use call
 * on the internal instance so that the modules are loaded properly.
 */
 _onContentReady: function(e) {
 if (!this._ready) {
 this._ready = true;
 var inst = this.getInstance(),
 args = Y.clone(this.get('use'));
 this.fire('contentready');
 Y.log('On available for body of iframe', 'info', 'frame');
 if (e) {
 inst.config.doc = Y.Node.getDOMNode(e.target);
 }
 //TODO Circle around and deal with CSS loading...
 args.push(Y.bind(function() {
 Y.log('Callback from final internal use call', 'info', 'frame');
 if (inst.EditorSelection) {
 inst.EditorSelection.DEFAULT_BLOCK_TAG = this.get('defaultblock');
 }
 //Moved to here so that the iframe is ready before allowing editing..
 if (this.get('designMode')) {
 if(Y.UA.ie) {
 inst.config.doc.body.contentEditable = 'true';
 this._ieSetBodyHeight();
 inst.on('keyup', Y.bind(this._ieSetBodyHeight, this), inst.config.doc);
 } else {
 inst.config.doc.designMode = 'on';
 }
 }
 this.fire('ready');
 }, this));
 Y.log('Calling use on internal instance: ' + args, 'info', 'frame');
 inst.use.apply(inst, args);
 inst.one('doc').get('documentElement').addClass('yui-js-enabled');
 }
 },
 _ieHeightCounter: null,
 /**
 * Internal method to set the height of the body to the height of the document in IE.
 * With contenteditable being set, the document becomes unresponsive to clicks, this
 * method expands the body to be the height of the document so that doesn't happen.
 * @private
 * @method _ieSetBodyHeight
 */
 _ieSetBodyHeight: function(e) {
 if (!this._ieHeightCounter) {
 this._ieHeightCounter = 0;
 }
 this._ieHeightCounter++;
 var run = false, inst, h, bh;
 if (!e) {
 run = true;
 }
 if (e) {
 switch (e.keyCode) {
 case 8:
 case 13:
 run = true;
 break;
 }
 if (e.ctrlKey || e.shiftKey) {
 run = true;
 }
 }
 if (run) {
 try {
 inst = this.getInstance();
 h = this._iframe.get('offsetHeight');
 bh = inst.config.doc.body.scrollHeight;
 if (h > bh) {
 h = (h - 15) + 'px';
 inst.config.doc.body.style.height = h;
 } else {
 inst.config.doc.body.style.height = 'auto';
 }
 } catch (e) {
 if (this._ieHeightCounter < 100) {
 Y.later(200, this, this._ieSetBodyHeight);
 } else {
 Y.log('Failed to set body height in IE', 'error', 'frame');
 }
 }
 }
 },
 /**
 * @private
 * @method _resolveBaseHref
 * @description Resolves the basehref of the page the frame is created on. Only applies to dynamic content.
 * @param {String} href The new value to use, if empty it will be resolved from the current url.
 * @return {String}
 */
 _resolveBaseHref: function(href) {
 if (!href || href === '') {
 href = Y.config.doc.location.href;
 if (href.indexOf('?') !== -1) { //Remove the query string
 href = href.substring(0, href.indexOf('?'));
 }
 href = href.substring(0, href.lastIndexOf('/')) + '/';
 }
 return href;
 },
 /**
 * @private
 * @method _getHTML
 * @description Get the content from the iframe
 * @param {String} html The raw HTML from the body of the iframe.
 * @return {String}
 */
 _getHTML: function(html) {
 if (this._ready) {
 var inst = this.getInstance();
 html = inst.one('body').get('innerHTML');
 }
 return html;
 },
 /**
 * @private
 * @method _setHTML
 * @description Set the content of the iframe
 * @param {String} html The raw HTML to set the body of the iframe to.
 * @return {String}
 */
 _setHTML: function(html) {
 if (this._ready) {
 var inst = this.getInstance();
 inst.one('body').set('innerHTML', html);
 } else {
 this.once(EVENT_CONTENT_READY, Y.bind(this._setHTML, this, html));
 }
 return html;
 },
 /**
 * @private
 * @method _getLinkedCSS
 * @description Get the linked CSS on the instance.
 */
 _getLinkedCSS: function(urls) {
 if (!Y.Lang.isArray(urls)) {
 urls = [urls];
 }
 var str = '';
 if (!this._ready) {
 Y.each(urls, function(v) {
 if (v) {
 str += '<link rel="stylesheet" href="' + v + '" type="text/css">';
 }
 });
 } else {
 str = urls;
 }
 return str;
 },
 /**
 * @private
 * @method _setLinkedCSS
 * @description Sets the linked CSS on the instance..
 */
 _setLinkedCSS: function(css) {
 if (this._ready) {
 var inst = this.getInstance();
 inst.Get.css(css);
 }
 return css;
 },
 /**
 * @private
 * @method _setExtraCSS
 * @description Set's the extra CSS on the instance..
 */
 _setExtraCSS: function(css) {
 if (this._ready) {
 var inst = this.getInstance(),
 node = inst.one('#extra_css');
 if (node) {
 node.remove();
 }
 inst.one('head').append('<style id="extra_css">' + css + '</style>');
 } else {
 //This needs to be wrapped in a contentready callback for the !_ready state
 this.once(EVENT_CONTENT_READY, Y.bind(this._setExtraCSS, this, css));
 }
 return css;
 },
 /**
 * @private
 * @method _instanceLoaded
 * @description Called from the first YUI instance that sets up the internal instance.
 * This loads the content into the window/frame and attaches the contentready event.
 * @param {YUI} inst The internal YUI instance bound to the frame/window
 */
 _instanceLoaded: function(inst) {
 this._instance = inst;
 this._onContentReady();
 var doc = this._instance.config.doc;
 if (this.get('designMode')) {
 if (!Y.UA.ie) {
 try {
 //Force other browsers into non CSS styling
 doc.execCommand('styleWithCSS', false, false);
 doc.execCommand('insertbronreturn', false, false);
 } catch (err) {}
 }
 }
 },
 //BEGIN PUBLIC METHODS
 /**
 * @method use
 * @description This is a scoped version of the normal YUI.use method & is bound to this frame/window.
 * At setup, the inst.use method is mapped to this method.
 */
 use: function() {
 Y.log('Calling augmented use after ready', 'info', 'frame');
 var inst = this.getInstance(),
 args = Y.Array(arguments),
 cb = false;
 if (Y.Lang.isFunction(args[args.length - 1])) {
 cb = args.pop();
 }
 if (cb) {
 args.push(function() {
 Y.log('Internal callback from augmented use', 'info', 'frame');
 cb.apply(inst, arguments);
 });
 }
 return inst.__use.apply(inst, args);
 },
 /**
 * @method delegate
 * @description A delegate method passed to the instance's delegate method
 * @param {String} type The type of event to listen for
 * @param {Function} fn The method to attach
 * @param {String} cont The container to act as a delegate, if no "sel" passed, the body is assumed as the container.
 * @param {String} sel The selector to match in the event (optional)
 * @return {EventHandle} The Event handle returned from Y.delegate
 */
 delegate: function(type, fn, cont, sel) {
 var inst = this.getInstance();
 if (!inst) {
 Y.log('Delegate events can not be attached until after the ready event has fired.', 'error', 'iframe');
 return false;
 }
 if (!sel) {
 sel = cont;
 cont = 'body';
 }
 return inst.delegate(type, fn, cont, sel);
 },
 /**
 * @method getInstance
 * @description Get a reference to the internal YUI instance.
 * @return {YUI} The internal YUI instance
 */
 getInstance: function() {
 return this._instance;
 },
 /**
 * @method render
 * @description Render the iframe into the container config option or open the window.
 * @param {String/HTMLElement/Node} node The node to render to
 * @return {Frame}
 * @chainable
 */
 render: function(node) {
 if (this._rendered) {
 Y.log('Frame already rendered.', 'warn', 'frame');
 return this;
 }
 this._rendered = true;
 if (node) {
 this.set('container', node);
 }
 this._create(Y.bind(function(res) {
 var inst, timer,
 cb = Y.bind(function(i) {
 Y.log('Internal instance loaded with node-base', 'info', 'frame');
 this._instanceLoaded(i);
 }, this),
 args = Y.clone(this.get('use')),
 config = {
 debug: false,
 win: res.win,
 doc: res.doc
 },
 fn = Y.bind(function() {
 Y.log('New Modules Loaded into main instance', 'info', 'frame');
 config = this._resolveWinDoc(config);
 inst = YUI(config);
 inst.host = this.get(HOST); //Cross reference to Editor
 inst.log = Y.log; //Dump the instance logs to the parent instance.
 Y.log('Creating new internal instance with node-base only', 'info', 'frame');
 try {
 inst.use('node-base', cb);
 if (timer) {
 clearInterval(timer);
 }
 } catch (e) {
 timer = setInterval(function() {
 Y.log('[TIMER] Internal use call failed, retrying', 'info', 'frame');
 fn();
 }, 350);
 Y.log('Internal use call failed, retrying', 'info', 'frame');
 }
 }, this);
 args.push(fn);
 Y.log('Adding new modules to main instance: ' + args, 'info', 'frame');
 Y.use.apply(Y, args);
 }, this));
 return this;
 },
 /**
 * @private
 * @method _handleFocus
 * @description Does some tricks on focus to set the proper cursor position.
 */
 _handleFocus: function() {
 var inst = this.getInstance(),
 sel = new inst.EditorSelection(),
 n, c, b, par;
 if (sel.anchorNode) {
 Y.log('_handleFocus being called..', 'info', 'frame');
 n = sel.anchorNode;
 if (n.test('p') && n.get('innerHTML') === '') {
 n = n.get('parentNode');
 }
 c = n.get('childNodes');
 if (c.size()) {
 if (c.item(0).test('br')) {
 sel.selectNode(n, true, false);
 } else if (c.item(0).test('p')) {
 n = c.item(0).one('br.yui-cursor');
 if (n) {
 n = n.get('parentNode');
 }
 if (!n) {
 n = c.item(0).get('firstChild');
 }
 if (!n) {
 n = c.item(0);
 }
 if (n) {
 sel.selectNode(n, true, false);
 }
 } else {
 b = inst.one('br.yui-cursor');
 if (b) {
 par = b.get('parentNode');
 if (par) {
 sel.selectNode(par, true, false);
 }
 }
 }
 }
 }
 },
 /**
 * Validates linkedcss property
 *
 * @method _validateLinkedCSS
 * @private
 */
 _validateLinkedCSS: function(value) {
 return Lang.isString(value) || Lang.isArray(value);
 },
 /**
 * @method focus
 * @description Set the focus to the iframe
 * @param {Function} fn Callback function to execute after focus happens
 * @return {Frame}
 * @chainable
 */
 focus: function(fn) {
 if (Y.UA.ie && Y.UA.ie < 9) {
 try {
 Y.one('win').focus();
 if (this.getInstance()) {
 if (this.getInstance().one('win')) {
 this.getInstance().one('win').focus();
 }
 }
 } catch (ierr) {
 Y.log('Frame focus failed', 'warn', 'frame');
 }
 if (fn === true) {
 this._handleFocus();
 }
 if (Y.Lang.isFunction(fn)) {
 fn();
 }
 } else {
 try {
 Y.one('win').focus();
 Y.later(100, this, function() {
 if (this.getInstance()) {
 if (this.getInstance().one('win')) {
 this.getInstance().one('win').focus();
 }
 }
 if (fn === true) {
 this._handleFocus();
 }
 if (Y.Lang.isFunction(fn)) {
 fn();
 }
 });
 } catch (ferr) {
 Y.log('Frame focus failed', 'warn', 'frame');
 }
 }
 return this;
 },
 /**
 * @method show
 * @description Show the iframe instance
 * @return {Frame}
 * @chainable
 */
 show: function() {
 this._iframe.setStyles({
 position: 'static',
 left: ''
 });
 if (Y.UA.gecko) {
 try {
 if (this.getInstance()) {
 this.getInstance().config.doc.designMode = 'on';
 }
 } catch (e) { }
 this.focus();
 }
 return this;
 },
 /**
 * @method hide
 * @description Hide the iframe instance
 * @return {Frame}
 * @chainable
 */
 hide: function() {
 this._iframe.setStyles({
 position: 'absolute',
 left: '-999999px'
 });
 return this;
 }
 }, {
 /**
 * @static
 * @property THROTTLE_TIME
 * @description The throttle time for key events in IE
 * @type Number
 * @default 100
 */
 THROTTLE_TIME: 100,
 /**
 * @static
 * @property DOM_EVENTS
 * @description The DomEvents that the frame automatically attaches and bubbles
 * @type Object
 */
 DOM_EVENTS: {
 dblclick: 1,
 click: 1,
 paste: 1,
 mouseup: 1,
 mousedown: 1,
 keyup: 1,
 keydown: 1,
 keypress: 1,
 activate: 1,
 deactivate: 1,
 beforedeactivate: 1,
 focusin: 1,
 focusout: 1
 },
 /**
 * @static
 * @property DEFAULT_CSS
 * @description The default css used when creating the document.
 * @type String
 */
 DEFAULT_CSS: 'body { background-color: #fff; font: 13px/1.22 arial,helvetica,clean,sans-serif;*font-size:small;*font:x-small; } a, a:visited, a:hover { color: blue !important; text-decoration: underline !important; cursor: text !important; } img { cursor: pointer !important; border: none; }',
 /**
 * The template string used to create the iframe, deprecated to use DOM instead of innerHTML
 * @static
 * @property HTML
 * @type String
 * @deprecated
 */
 //HTML: '<iframe border="0" frameBorder="0" marginWidth="0" marginHeight="0" leftMargin="0" topMargin="0" allowTransparency="true" width="100%" height="99%"></iframe>',
 /**
 * Attributes to auto add to the dynamic iframe under the hood
 * @static
 * @property IFRAME_ATTRS
 * @type Object
 */
 IFRAME_ATTRS: {
 border: '0',
 frameBorder: '0',
 marginWidth: '0',
 marginHeight: '0',
 leftMargin: '0',
 topMargin: '0',
 allowTransparency: 'true',
 width: "100%",
 height: "99%"
 },
 /**
 * @static
 * @property PAGE_HTML
 * @description The template used to create the page when created dynamically.
 * @type String
 */
 PAGE_HTML: '<html dir="{DIR}" lang="{LANG}"><head><title>{TITLE}</title>{META}<base href="{BASE_HREF}"/>{LINKED_CSS}<style id="editor_css">{DEFAULT_CSS}</style>{EXTRA_CSS}</head><body>{CONTENT}</body></html>',
 /**
 * @static
 * @method getDocType
 * @description Parses document.doctype and generates a DocType to match the parent page, if supported.
 * For IE8, it grabs document.all[0].nodeValue and uses that. For IE < 8, it falls back to Frame.DOC_TYPE.
 * @return {String} The normalized DocType to apply to the iframe
 */
 getDocType: function() {
 var dt = Y.config.doc.doctype,
 str = Frame.DOC_TYPE;
 if (dt) {
 str = '<!DOCTYPE ' + dt.name + ((dt.publicId) ? ' ' + dt.publicId : '') + ((dt.systemId) ? ' ' + dt.systemId : '') + '>';
 } else {
 if (Y.config.doc.all) {
 dt = Y.config.doc.all[0];
 if (dt.nodeType) {
 if (dt.nodeType === 8) {
 if (dt.nodeValue) {
 if (dt.nodeValue.toLowerCase().indexOf('doctype') !== -1) {
 str = '<!' + dt.nodeValue + '>';
 }
 }
 }
 }
 }
 }
 return str;
 },
 /**
 * @static
 * @property DOC_TYPE
 * @description The DOCTYPE to prepend to the new document when created. Should match the one on the page being served.
 * @type String
 */
 DOC_TYPE: '<!DOCTYPE HTML PUBLIC "-/'+'/W3C/'+'/DTD HTML 4.01/'+'/EN" "http:/'+'/www.w3.org/TR/html4/strict.dtd">',
 /**
 * @static
 * @property META
 * @description The meta-tag for Content-Type to add to the dynamic document
 * @type String
 */
 META: '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta http-equiv="X-UA-Compatible" content="IE=7">',
 //META: '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>',
 /**
 * @static
 * @property NAME
 * @description The name of the class (frame)
 * @type String
 */
 NAME: 'frame',
 /**
 * The namespace on which Frame plugin will reside.
 *
 * @property NS
 * @type String
 * @default 'frame'
 * @static
 */
 NS: 'frame',
 ATTRS: {
 /**
 * @attribute title
 * @description The title to give the blank page.
 * @type String
 */
 title: {
 value: 'Blank Page'
 },
 /**
 * @attribute dir
 * @description The default text direction for this new frame. Default: ltr
 * @type String
 */
 dir: {
 value: 'ltr'
 },
 /**
 * @attribute lang
 * @description The default language. Default: en-US
 * @type String
 */
 lang: {
 value: 'en-US'
 },
 /**
 * @attribute src
 * @description The src of the iframe/window. Defaults to javascript:;
 * @type String
 */
 src: {
 //Hackish, IE needs the false in the Javascript URL
 value: 'javascript' + ((Y.UA.ie) ? ':false' : ':') + ';'
 },
 /**
 * @attribute designMode
 * @description Should designMode be turned on after creation.
 * @writeonce
 * @type Boolean
 */
 designMode: {
 writeOnce: true,
 value: false
 },
 /**
 * @attribute content
 * @description The string to inject into the body of the new frame/window.
 * @type String
 */
 content: {
 validator: Lang.isString,
 value: '<br>',
 setter: '_setHTML',
 getter: '_getHTML'
 },
 /**
 * @attribute basehref
 * @description The base href to use in the iframe.
 * @type String
 */
 basehref: {
 value: false,
 getter: '_resolveBaseHref'
 },
 /**
 * @attribute use
 * @description Array of modules to include in the scoped YUI instance at render time. Default: ['none', 'selector-css2']
 * @writeonce
 * @type Array
 */
 use: {
 writeOnce: true,
 value: ['node', 'node-style', 'selector-css3']
 },
 /**
 * @attribute container
 * @description The container to append the iFrame to on render.
 * @type String/HTMLElement/Node
 */
 container: {
 value: 'body',
 setter: function(n) {
 return Y.one(n);
 }
 },
 /**
 * @attribute node
 * @description The Node instance of the iframe.
 * @type Node
 */
 node: {
 readOnly: true,
 value: null,
 getter: function() {
 return this._iframe;
 }
 },
 /**
 * @attribute id
 * @description Set the id of the new Node. (optional)
 * @type String
 * @writeonce
 */
 id: {
 writeOnce: true,
 getter: function(id) {
 if (!id) {
 id = 'iframe-' + Y.guid();
 }
 return id;
 }
 },
 /**
 * @attribute linkedcss
 * @description An array of url's to external linked style sheets
 * @type String|Array
 */
 linkedcss: {
 validator: '_validateLinkedCSS',
 getter: '_getLinkedCSS',
 setter: '_setLinkedCSS'
 },
 /**
 * @attribute extracss
 * @description A string of CSS to add to the Head of the Editor
 * @type String
 */
 extracss: {
 validator: Lang.isString,
 setter: '_setExtraCSS'
 },
 /**
 * @attribute defaultblock
 * @description The default tag to use for block level items, defaults to: p
 * @type String
 */
 defaultblock: {
 value: 'p'
 }
 }
 });
 Y.namespace('Plugin');
 Y.Plugin.Frame = Frame;
 Y.Frame = Frame;
 

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