    /**
     * @class Ext.form.field.HtmlEditor
     * @extends Ext.Component
     *
     * Provides a lightweight HTML Editor component. Some toolbar features are not supported by Safari and will be
     * automatically hidden when needed. These are noted in the config options where appropriate.
     *
     * The editor's toolbar buttons have tooltips defined in the {@link #buttonTips} property, but they are not
     * enabled by default unless the global {@link Ext.tip.QuickTipManager} singleton is {@link Ext.tip.QuickTipManager#init initialized}.
     *
     * An Editor is a sensitive component that can't be used in all spots standard fields can be used. Putting an Editor within
     * any element that has display set to 'none' can cause problems in Safari and Firefox due to their default iframe reloading bugs.
     *
     * {@img Ext.form.HtmlEditor/Ext.form.HtmlEditor1.png Ext.form.HtmlEditor component}
     *
     * ## Example usage
     *
     * {@img Ext.form.HtmlEditor/Ext.form.HtmlEditor2.png Ext.form.HtmlEditor component}
     *
     *     // Simple example rendered with default options:
     *     Ext.tip.QuickTips.init();  // enable tooltips
     *     Ext.create('Ext.form.HtmlEditor', {
     *         width: 580,
     *         height: 250,
     *         renderTo: Ext.getBody()
     *     });
     *
     * {@img Ext.form.HtmlEditor/Ext.form.HtmlEditor2.png Ext.form.HtmlEditor component}
     *
     *     // Passed via xtype into a container and with custom options:
     *     Ext.tip.QuickTips.init();  // enable tooltips
     *     new Ext.panel.Panel({
     *         title: 'HTML Editor',
     *         renderTo: Ext.getBody(),
     *         width: 550,
     *         height: 250,
     *         frame: true,
     *         layout: 'fit',
     *         items: {
     *             xtype: 'htmleditor',
     *             enableColors: false,
     *             enableAlignments: false
     *         }
     *     });
     *
     */
    Ext.define('Ext.form.field.HtmlEditor', {
        extend:'Ext.Component',
        mixins: {
            labelable: 'Ext.form.Labelable',
            field: 'Ext.form.field.Field'
        },
        alias: 'widget.htmleditor',
        alternateClassName: 'Ext.form.HtmlEditor',
        requires: [
            'Ext.tip.QuickTipManager',
            'Ext.picker.Color',
            'Ext.toolbar.Item',
            'Ext.toolbar.Toolbar',
            'Ext.util.Format',
            'Ext.layout.component.field.HtmlEditor'
        ],

        fieldSubTpl: [
            '<div class="{toolbarWrapCls}"></div>',
            '<textarea id="{id}" name="{name}" tabIndex="-1" class="{textareaCls}" ',
                'style="{size}" autocomplete="off"></textarea>',
            '<iframe name="{iframeName}" frameBorder="0" style="overflow:auto;{size}" src="{iframeSrc}"></iframe>',
            {
                compiled: true,
                disableFormats: true
            }
        ],

        /**
         * @cfg {Boolean} enableFormat Enable the bold, italic and underline buttons (defaults to true)
         */
        enableFormat : true,
        /**
         * @cfg {Boolean} enableFontSize Enable the increase/decrease font size buttons (defaults to true)
         */
        enableFontSize : true,
        /**
         * @cfg {Boolean} enableColors Enable the fore/highlight color buttons (defaults to true)
         */
        enableColors : true,
        /**
         * @cfg {Boolean} enableAlignments Enable the left, center, right alignment buttons (defaults to true)
         */
        enableAlignments : true,
        /**
         * @cfg {Boolean} enableLists Enable the bullet and numbered list buttons. Not available in Safari. (defaults to true)
         */
        enableLists : true,
        /**
         * @cfg {Boolean} enableSourceEdit Enable the switch to source edit button. Not available in Safari. (defaults to true)
         */
        enableSourceEdit : true,
        /**
         * @cfg {Boolean} enableLinks Enable the create link button. Not available in Safari. (defaults to true)
         */
        enableLinks : true,
        /**
         * @cfg {Boolean} enableFont Enable font selection. Not available in Safari. (defaults to true)
         */
        enableFont : true,
        /**
         * @cfg {String} createLinkText The default text for the create link prompt
         */
        createLinkText : 'Please enter the URL for the link:',
        /**
         * @cfg {String} defaultLinkValue The default value for the create link prompt (defaults to http:/ /)
         */
        defaultLinkValue : 'http:/'+'/',
        /**
         * @cfg {Array} fontFamilies An array of available font families
         */
        fontFamilies : [
            'Arial',
            'Courier New',
            'Tahoma',
            'Times New Roman',
            'Verdana'
        ],
        defaultFont: 'tahoma',
        /**
         * @cfg {String} defaultValue A default value to be put into the editor to resolve focus issues (defaults to &#160; (Non-breaking space) in Opera and IE6, &#8203; (Zero-width space) in all other browsers).
         */
        defaultValue: (Ext.isOpera || Ext.isIE6) ? '&#160;' : '&#8203;',

        fieldBodyCls: Ext.baseCSSPrefix + 'html-editor-wrap',

        componentLayout: 'htmleditor',

        // private properties
        initialized : false,
        activated : false,
        sourceEditMode : false,
        iframePad:3,
        hideMode:'offsets',

        maskOnDisable: true,

        // private
        initComponent : function(){
            var me = this;

            me.addEvents(
                /**
                 * @event initialize
                 * Fires when the editor is fully initialized (including the iframe)
                 * @param {Ext.form.field.HtmlEditor} this
                 */
                'initialize',
                /**
                 * @event activate
                 * Fires when the editor is first receives the focus. Any insertion must wait
                 * until after this event.
                 * @param {Ext.form.field.HtmlEditor} this
                 */
                'activate',
                 /**
                 * @event beforesync
                 * Fires before the textarea is updated with content from the editor iframe. Return false
                 * to cancel the sync.
                 * @param {Ext.form.field.HtmlEditor} this
                 * @param {String} html
                 */
                'beforesync',
                 /**
                 * @event beforepush
                 * Fires before the iframe editor is updated with content from the textarea. Return false
                 * to cancel the push.
                 * @param {Ext.form.field.HtmlEditor} this
                 * @param {String} html
                 */
                'beforepush',
                 /**
                 * @event sync
                 * Fires when the textarea is updated with content from the editor iframe.
                 * @param {Ext.form.field.HtmlEditor} this
                 * @param {String} html
                 */
                'sync',
                 /**
                 * @event push
                 * Fires when the iframe editor is updated with content from the textarea.
                 * @param {Ext.form.field.HtmlEditor} this
                 * @param {String} html
                 */
                'push',
                 /**
                 * @event editmodechange
                 * Fires when the editor switches edit modes
                 * @param {Ext.form.field.HtmlEditor} this
                 * @param {Boolean} sourceEdit True if source edit, false if standard editing.
                 */
                'editmodechange'
            );

            me.callParent(arguments);

            // Init mixins
            me.initLabelable();
            me.initField();
        },

        /*
         * Protected method that will not generally be called directly. It
         * is called when the editor creates its toolbar. Override this method if you need to
         * add custom toolbar buttons.
         * @param {Ext.form.field.HtmlEditor} editor
         */
        createToolbar : function(editor){
            var me = this,
                items = [],
                tipsEnabled = Ext.tip.QuickTipManager && Ext.tip.QuickTipManager.isEnabled(),
                baseCSSPrefix = Ext.baseCSSPrefix,
                fontSelectItem, toolbar, undef;

            function btn(id, toggle, handler){
                return {
                    itemId : id,
                    cls : baseCSSPrefix + 'btn-icon',
                    iconCls: baseCSSPrefix + 'edit-'+id,
                    enableToggle:toggle !== false,
                    scope: editor,
                    handler:handler||editor.relayBtnCmd,
                    clickEvent:'mousedown',
                    tooltip: tipsEnabled ? editor.buttonTips[id] || undef : undef,
                    overflowText: editor.buttonTips[id].title || undef,
                    tabIndex:-1
                };
            }

            if (me.enableFont && !Ext.isSafari2) {
                fontSelectItem = Ext.widget('component', {
                    renderTpl: [
                        '<select class="{cls}">',
                            '<tpl for="fonts">',
                                '<option value="{[values.toLowerCase()]}" style="font-family:{.}"<tpl if="values.toLowerCase()==parent.defaultFont"> selected</tpl>>{.}</option>',
                            '</tpl>',
                        '</select>'
                    ],
                    renderData: {
                        cls: baseCSSPrefix + 'font-select',
                        fonts: me.fontFamilies,
                        defaultFont: me.defaultFont
                    },
                    renderSelectors: {
                        selectEl: 'select'
                    },
                    onDisable: function() {
                        var selectEl = this.selectEl;
                        if (selectEl) {
                            selectEl.dom.disabled = true;
                        }
                        Ext.Component.superclass.onDisable.apply(this, arguments);
                    },
                    onEnable: function() {
                        var selectEl = this.selectEl;
                        if (selectEl) {
                            selectEl.dom.disabled = false;
                        }
                        Ext.Component.superclass.onEnable.apply(this, arguments);
                    }
                });

                items.push(
                    fontSelectItem,
                    '-'
                );
            }

            if (me.enableFormat) {
                items.push(
                    btn('bold'),
                    btn('italic'),
                    btn('underline')
                );
            }

            if (me.enableFontSize) {
                items.push(
                    '-',
                    btn('increasefontsize', false, me.adjustFont),
                    btn('decreasefontsize', false, me.adjustFont)
                );
            }

            if (me.enableColors) {
                items.push(
                    '-', {
                        itemId: 'forecolor',
                        cls: baseCSSPrefix + 'btn-icon',
                        iconCls: baseCSSPrefix + 'edit-forecolor',
                        overflowText: editor.buttonTips.forecolor.title,
                        tooltip: tipsEnabled ? editor.buttonTips.forecolor || undef : undef,
                        tabIndex:-1,
                        menu : Ext.widget('menu', {
                            plain: true,
                            items: [{
                                xtype: 'colorpicker',
                                allowReselect: true,
                                focus: Ext.emptyFn,
                                value: '000000',
                                plain: true,
                                clickEvent: 'mousedown',
                                handler: function(cp, color) {
                                    me.execCmd('forecolor', Ext.isWebKit || Ext.isIE ? '#'+color : color);
                                    me.deferFocus();
                                    this.up('menu').hide();
                                }
                            }]
                        })
                    }, {
                        itemId: 'backcolor',
                        cls: baseCSSPrefix + 'btn-icon',
                        iconCls: baseCSSPrefix + 'edit-backcolor',
                        overflowText: editor.buttonTips.backcolor.title,
                        tooltip: tipsEnabled ? editor.buttonTips.backcolor || undef : undef,
                        tabIndex:-1,
                        menu : Ext.widget('menu', {
                            plain: true,
                            items: [{
                                xtype: 'colorpicker',
                                focus: Ext.emptyFn,
                                value: 'FFFFFF',
                                plain: true,
                                allowReselect: true,
                                clickEvent: 'mousedown',
                                handler: function(cp, color) {
                                    if (Ext.isGecko) {
                                        me.execCmd('useCSS', false);
                                        me.execCmd('hilitecolor', color);
                                        me.execCmd('useCSS', true);
                                        me.deferFocus();
                                    } else {
                                        me.execCmd(Ext.isOpera ? 'hilitecolor' : 'backcolor', Ext.isWebKit || Ext.isIE ? '#'+color : color);
                                        me.deferFocus();
                                    }
                                    this.up('menu').hide();
                                }
                            }]
                        })
                    }
                );
            }

            if (me.enableAlignments) {
                items.push(
                    '-',
                    btn('justifyleft'),
                    btn('justifycenter'),
                    btn('justifyright')
                );
            }

            if (!Ext.isSafari2) {
                if (me.enableLinks) {
                    items.push(
                        '-',
                        btn('createlink', false, me.createLink)
                    );
                }

                if (me.enableLists) {
                    items.push(
                        '-',
                        btn('insertorderedlist'),
                        btn('insertunorderedlist')
                    );
                }
                if (me.enableSourceEdit) {
                    items.push(
                        '-',
                        btn('sourceedit', true, function(btn){
                            me.toggleSourceEdit(!me.sourceEditMode);
                        })
                    );
                }
            }

            // build the toolbar
            toolbar = Ext.widget('toolbar', {
                renderTo: me.toolbarWrap,
                enableOverflow: true,
                items: items
            });

            if (fontSelectItem) {
                me.fontSelect = fontSelectItem.selectEl;

                me.mon(me.fontSelect, 'change', function(){
                    me.relayCmd('fontname', me.fontSelect.dom.value);
                    me.deferFocus();
                });
            }

            // stop form submits
            me.mon(toolbar.el, 'click', function(e){
                e.preventDefault();
            });

            me.toolbar = toolbar;
        },

        onDisable: function() {
            this.bodyEl.mask();
            this.callParent(arguments);
        },

        onEnable: function() {
            this.bodyEl.unmask();
            this.callParent(arguments);
        },

        /**
         * Sets the read only state of this field.
         * @param {Boolean} readOnly Whether the field should be read only.
         */
        setReadOnly: function(readOnly) {
            var me = this,
                textareaEl = me.textareaEl,
                iframeEl = me.iframeEl,
                body;

            me.readOnly = readOnly;

            if (textareaEl) {
                textareaEl.dom.readOnly = readOnly;
            }

            if (me.initialized) {
                body = me.getEditorBody();
                if (Ext.isIE) {
                    // Hide the iframe while setting contentEditable so it doesn't grab focus
                    iframeEl.setDisplayed(false);
                    body.contentEditable = !readOnly;
                    iframeEl.setDisplayed(true);
                } else {
                    me.setDesignMode(!readOnly);
                }
                if (body) {
                    body.style.cursor = readOnly ? 'default' : 'text';
                }
                me.disableItems(readOnly);
            }
        },

        /**
         * Protected method that will not generally be called directly. It
         * is called when the editor initializes the iframe with HTML contents. Override this method if you
         * want to change the initialization markup of the iframe (e.g. to add stylesheets).
         *
         * Note: IE8-Standards has unwanted scroller behavior, so the default meta tag forces IE7 compatibility.
         * Also note that forcing IE7 mode works when the page is loaded normally, but if you are using IE's Web
         * Developer Tools to manually set the document mode, that will take precedence and override what this
         * code sets by default. This can be confusing when developing, but is not a user-facing issue.
         */
        getDocMarkup: function() {
            var me = this,
                h = me.iframeEl.getHeight() - me.iframePad * 2;
            return Ext.String.format('<html><head><style type="text/css">body{border:0;margin:0;padding:{0}px;height:{1}px;box-sizing: border-box; -moz-box-sizing: border-box; -webkit-box-sizing: border-box;cursor:text}</style></head><body></body></html>', me.iframePad, h);
        },

        // private
        getEditorBody: function() {
            var doc = this.getDoc();
            return doc.body || doc.documentElement;
        },

        // private
        getDoc: function() {
            return (!Ext.isIE && this.iframeEl.dom.contentDocument) || this.getWin().document;
        },

        // private
        getWin: function() {
            return Ext.isIE ? this.iframeEl.dom.contentWindow : window.frames[this.iframeEl.dom.name];
        },

        // private
        onRender: function() {
            var me = this,
                renderSelectors = me.renderSelectors;

            Ext.applyIf(renderSelectors, me.getLabelableSelectors());

            Ext.applyIf(renderSelectors, {
                toolbarWrap: 'div.' + Ext.baseCSSPrefix + 'html-editor-tb',
                iframeEl: 'iframe',
                textareaEl: 'textarea'
            });

            me.callParent(arguments);

            me.textareaEl.dom.value = me.value || '';

            // Start polling for when the iframe document is ready to be manipulated
            me.monitorTask = Ext.TaskManager.start({
                run: me.checkDesignMode,
                scope: me,
                interval:100
            });

            me.createToolbar(me);
            me.disableItems(true);
        },

        initRenderTpl: function() {
            var me = this;
            if (!me.hasOwnProperty('renderTpl')) {
                me.renderTpl = me.getTpl('labelableRenderTpl');
            }
            return me.callParent();
        },

        initRenderData: function() {
            return Ext.applyIf(this.callParent(), this.getLabelableRenderData());
        },

        getSubTplData: function() {
            var cssPrefix = Ext.baseCSSPrefix;
            return {
                toolbarWrapCls: cssPrefix + 'html-editor-tb',
                textareaCls: cssPrefix + 'hidden',
                iframeName: Ext.id(),
                iframeSrc: Ext.SSL_SECURE_URL,
                size: 'height:100px;'
            };
        },

        getSubTplMarkup: function() {
            return this.getTpl('fieldSubTpl').apply(this.getSubTplData());
        },

        getBodyNaturalWidth: function() {
            return 565;
        },

        initFrameDoc: function() {
            var me = this,
                doc, task;

            Ext.TaskManager.stop(me.monitorTask);

            doc = me.getDoc();
            me.win = me.getWin();

            doc.open();
            doc.write(me.getDocMarkup());
            doc.close();

            task = { // must defer to wait for browser to be ready
                run: function() {
                    var doc = me.getDoc();
                    if (doc.body || doc.readyState === 'complete') {
                        Ext.TaskManager.stop(task);
                        me.setDesignMode(true);
                        Ext.defer(me.initEditor, 10, me);
                    }
                },
                interval : 10,
                duration:10000,
                scope: me
            };
            Ext.TaskManager.start(task);
        },

        checkDesignMode: function() {
            var me = this,
                doc = me.getDoc();
            if (doc && (!doc.editorInitialized || me.getDesignMode() !== 'on')) {
                me.initFrameDoc();
            }
        },

        /* private
         * set current design mode. To enable, mode can be true or 'on', off otherwise
         */
        setDesignMode: function(mode) {
            var me = this,
                doc = me.getDoc();
            if (doc) {
                if (me.readOnly) {
                    mode = false;
                }
                doc.designMode = (/on|true/i).test(String(mode).toLowerCase()) ?'on':'off';
            }
        },

        // private
        getDesignMode: function() {
            var doc = this.getDoc();
            return !doc ? '' : String(doc.designMode).toLowerCase();
        },

        disableItems: function(disabled) {
            this.getToolbar().items.each(function(item){
                if(item.getItemId() !== 'sourceedit'){
                    item.setDisabled(disabled);
                }
            });
        },

        /**
         * Toggles the editor between standard and source edit mode.
         * @param {Boolean} sourceEditMode (optional) True for source edit, false for standard
         */
        toggleSourceEdit: function(sourceEditMode) {
            var me = this,
                iframe = me.iframeEl,
                textarea = me.textareaEl,
                hiddenCls = Ext.baseCSSPrefix + 'hidden',
                btn = me.getToolbar().getComponent('sourceedit');

            if (!Ext.isBoolean(sourceEditMode)) {
                sourceEditMode = !me.sourceEditMode;
            }
            me.sourceEditMode = sourceEditMode;

            if (btn.pressed !== sourceEditMode) {
                btn.toggle(sourceEditMode);
            }
            if (sourceEditMode) {
                me.disableItems(true);
                me.syncValue();
                iframe.addCls(hiddenCls);
                textarea.removeCls(hiddenCls);
                textarea.dom.removeAttribute('tabIndex');
                textarea.focus();
            }
            else {
                if (me.initialized) {
                    me.disableItems(me.readOnly);
                }
                me.pushValue();
                iframe.removeCls(hiddenCls);
                textarea.addCls(hiddenCls);
                textarea.dom.setAttribute('tabIndex', -1);
                me.deferFocus();
            }
            me.fireEvent('editmodechange', me, sourceEditMode);
            me.doComponentLayout();
        },

        // private used internally
        createLink : function() {
            var url = prompt(this.createLinkText, this.defaultLinkValue);
            if (url && url !== 'http:/'+'/') {
                this.relayCmd('createlink', url);
            }
        },

        clearInvalid: Ext.emptyFn,

        // docs inherit from Field
        setValue: function(value) {
            var me = this,
                textarea = me.textareaEl;
            me.mixins.field.setValue.call(me, value);
            if (value === null || value === undefined) {
                value = '';
            }
            if (textarea) {
                textarea.dom.value = value;
            }
            me.pushValue();
            return this;
        },

        /**
         * Protected method that will not generally be called directly. If you need/want
         * custom HTML cleanup, this is the method you should override.
         * @param {String} html The HTML to be cleaned
         * @return {String} The cleaned HTML
         */
        cleanHtml: function(html) {
            html = String(html);
            if (Ext.isWebKit) { // strip safari nonsense
                html = html.replace(/\sclass="(?:Apple-style-span|khtml-block-placeholder)"/gi, '');
            }

            /*
             * Neat little hack. Strips out all the non-digit characters from the default
             * value and compares it to the character code of the first character in the string
             * because it can cause encoding issues when posted to the server.
             */
            if (html.charCodeAt(0) === this.defaultValue.replace(/\D/g, '')) {
                html = html.substring(1);
            }
            return html;
        },

        /**
         * @protected method that will not generally be called directly. Syncs the contents
         * of the editor iframe with the textarea.
         */
        syncValue : function(){
            var me = this,
                body, html, bodyStyle, match;
            if (me.initialized) {
                body = me.getEditorBody();
                html = body.innerHTML;
                if (Ext.isWebKit) {
                    bodyStyle = body.getAttribute('style'); // Safari puts text-align styles on the body element!
                    match = bodyStyle.match(/text-align:(.*?);/i);
                    if (match && match[1]) {
                        html = '<div style="' + match[0] + '">' + html + '</div>';
                    }
                }
                html = me.cleanHtml(html);
                if (me.fireEvent('beforesync', me, html) !== false) {
                    me.textareaEl.dom.value = html;
                    me.fireEvent('sync', me, html);
                }
            }
        },

        //docs inherit from Field
        getValue : function() {
            var me = this,
                value;
            if (!me.sourceEditMode) {
                me.syncValue();
            }
            value = me.rendered ? me.textareaEl.dom.value : me.value;
            me.value = value;
            return value;
        },

        /**
         * @protected method that will not generally be called directly. Pushes the value of the textarea
         * into the iframe editor.
         */
        pushValue: function() {
            var me = this,
                v;
            if(me.initialized){
                v = me.textareaEl.dom.value || '';
                if (!me.activated && v.length < 1) {
                    v = me.defaultValue;
                }
                if (me.fireEvent('beforepush', me, v) !== false) {
                    me.getEditorBody().innerHTML = v;
                    if (Ext.isGecko) {
                        // Gecko hack, see: https://bugzilla.mozilla.org/show_bug.cgi?id=232791#c8
                        me.setDesignMode(false);  //toggle off first
                        me.setDesignMode(true);
                    }
                    me.fireEvent('push', me, v);
                }
            }
        },

        // private
        deferFocus : function(){
             this.focus(false, true);
        },

        getFocusEl: function() {
            var me = this,
                win = me.win;
            return win && !me.sourceEditMode ? win : me.textareaEl;
        },

        // private
        initEditor : function(){
            //Destroying the component during/before initEditor can cause issues.
            try {
                var me = this,
                    dbody = me.getEditorBody(),
                    ss = me.textareaEl.getStyles('font-size', 'font-family', 'background-image', 'background-repeat', 'background-color', 'color'),
                    doc,
                    fn;

                ss['background-attachment'] = 'fixed'; // w3c
                dbody.bgProperties = 'fixed'; // ie

                Ext.core.DomHelper.applyStyles(dbody, ss);

                doc = me.getDoc();

                if (doc) {
                    try {
                        Ext.EventManager.removeAll(doc);
                    } catch(e) {}
                }

                /*
                 * We need to use createDelegate here, because when using buffer, the delayed task is added
                 * as a property to the function. When the listener is removed, the task is deleted from the function.
                 * Since onEditorEvent is shared on the prototype, if we have multiple html editors, the first time one of the editors
                 * is destroyed, it causes the fn to be deleted from the prototype, which causes errors. Essentially, we're just anonymizing the function.
                 */
                fn = Ext.Function.bind(me.onEditorEvent, me);
                Ext.EventManager.on(doc, {
                    mousedown: fn,
                    dblclick: fn,
                    click: fn,
                    keyup: fn,
                    buffer:100
                });

                // These events need to be relayed from the inner document (where they stop
                // bubbling) up to the outer document. This has to be done at the DOM level so
                // the event reaches listeners on elements like the document body. The effected
                // mechanisms that depend on this bubbling behavior are listed to the right
                // of the event.
                fn = me.onRelayedEvent;
                Ext.EventManager.on(doc, {
                    mousedown: fn, // menu dismisal (MenuManager) and Window onMouseDown (toFront)
                    mousemove: fn, // window resize drag detection
                    mouseup: fn,   // window resize termination
                    click: fn,     // not sure, but just to be safe
                    dblclick: fn,  // not sure again
                    scope: me
                });

                if (Ext.isGecko) {
                    Ext.EventManager.on(doc, 'keypress', me.applyCommand, me);
                }
                if (me.fixKeys) {
                    Ext.EventManager.on(doc, 'keydown', me.fixKeys, me);
                }

                // We need to be sure we remove all our events from the iframe on unload or we're going to LEAK!
                Ext.EventManager.on(window, 'unload', me.beforeDestroy, me);
                doc.editorInitialized = true;

                me.initialized = true;
                me.pushValue();
                me.setReadOnly(me.readOnly);
                me.fireEvent('initialize', me);
            } catch(ex) {
                // ignore (why?)
            }
        },

        // private
        beforeDestroy : function(){
            var me = this,
                monitorTask = me.monitorTask,
                doc, prop;

            if (monitorTask) {
                Ext.TaskManager.stop(monitorTask);
            }
            if (me.rendered) {
                try {
                    doc = me.getDoc();
                    if (doc) {
                        Ext.EventManager.removeAll(doc);
                        for (prop in doc) {
                            if (doc.hasOwnProperty(prop)) {
                                delete doc[prop];
                            }
                        }
                    }
                } catch(e) {
                    // ignore (why?)
                }
                Ext.destroyMembers('tb', 'toolbarWrap', 'iframeEl', 'textareaEl');
            }
            me.callParent();
        },

        // private
        onRelayedEvent: function (event) {
            // relay event from the iframe's document to the document that owns the iframe...

            var iframeEl = this.iframeEl,
                iframeXY = iframeEl.getXY(),
                eventXY = event.getXY();

            // the event from the inner document has XY relative to that document's origin,
            // so adjust it to use the origin of the iframe in the outer document:
            event.xy = [iframeXY[0] + eventXY[0], iframeXY[1] + eventXY[1]];

            event.injectEvent(iframeEl); // blame the iframe for the event...

            event.xy = eventXY; // restore the original XY (just for safety)
        },

        // private
        onFirstFocus : function(){
            var me = this,
                selection, range;
            me.activated = true;
            me.disableItems(me.readOnly);
            if (Ext.isGecko) { // prevent silly gecko errors
                me.win.focus();
                selection = me.win.getSelection();
                if (!selection.focusNode || selection.focusNode.nodeType !== 3) {
                    range = selection.getRangeAt(0);
                    range.selectNodeContents(me.getEditorBody());
                    range.collapse(true);
                    me.deferFocus();
                }
                try {
                    me.execCmd('useCSS', true);
                    me.execCmd('styleWithCSS', false);
                } catch(e) {
                    // ignore (why?)
                }
            }
            me.fireEvent('activate', me);
        },

        // private
        adjustFont: function(btn) {
            var adjust = btn.getItemId() === 'increasefontsize' ? 1 : -1,
                size = this.getDoc().queryCommandValue('FontSize') || '2',
                isPxSize = Ext.isString(size) && size.indexOf('px') !== -1,
                isSafari;
            size = parseInt(size, 10);
            if (isPxSize) {
                // Safari 3 values
                // 1 = 10px, 2 = 13px, 3 = 16px, 4 = 18px, 5 = 24px, 6 = 32px
                if (size <= 10) {
                    size = 1 + adjust;
                }
                else if (size <= 13) {
                    size = 2 + adjust;
                }
                else if (size <= 16) {
                    size = 3 + adjust;
                }
                else if (size <= 18) {
                    size = 4 + adjust;
                }
                else if (size <= 24) {
                    size = 5 + adjust;
                }
                else {
                    size = 6 + adjust;
                }
                size = Ext.Number.constrain(size, 1, 6);
            } else {
                isSafari = Ext.isSafari;
                if (isSafari) { // safari
                    adjust *= 2;
                }
                size = Math.max(1, size + adjust) + (isSafari ? 'px' : 0);
            }
            this.execCmd('FontSize', size);
        },

        // private
        onEditorEvent: function(e) {
            this.updateToolbar();
        },

        /**
         * Protected method that will not generally be called directly. It triggers
         * a toolbar update by reading the markup state of the current selection in the editor.
         */
        updateToolbar: function() {
            var me = this,
                btns, doc, name, fontSelect;

            if (me.readOnly) {
                return;
            }

            if (!me.activated) {
                me.onFirstFocus();
                return;
            }

            btns = me.getToolbar().items.map;
            doc = me.getDoc();

            if (me.enableFont && !Ext.isSafari2) {
                name = (doc.queryCommandValue('FontName') || me.defaultFont).toLowerCase();
                fontSelect = me.fontSelect.dom;
                if (name !== fontSelect.value) {
                    fontSelect.value = name;
                }
            }

            function updateButtons() {
                Ext.Array.forEach(Ext.Array.toArray(arguments), function(name) {
                    btns[name].toggle(doc.queryCommandState(name));
                });
            }
            if(me.enableFormat){
                updateButtons('bold', 'italic', 'underline');
            }
            if(me.enableAlignments){
                updateButtons('justifyleft', 'justifycenter', 'justifyright');
            }
            if(!Ext.isSafari2 && me.enableLists){
                updateButtons('insertorderedlist', 'insertunorderedlist');
            }

            Ext.menu.Manager.hideAll();

            me.syncValue();
        },

        // private
        relayBtnCmd: function(btn) {
            this.relayCmd(btn.getItemId());
        },

        /**
         * Executes a Midas editor command on the editor document and performs necessary focus and
         * toolbar updates. <b>This should only be called after the editor is initialized.</b>
         * @param {String} cmd The Midas command
         * @param {String/Boolean} value (optional) The value to pass to the command (defaults to null)
         */
        relayCmd: function(cmd, value) {
            Ext.defer(function() {
                var me = this;
                me.focus();
                me.execCmd(cmd, value);
                me.updateToolbar();
            }, 10, this);
        },

        /**
         * Executes a Midas editor command directly on the editor document.
         * For visual commands, you should use {@link #relayCmd} instead.
         * <b>This should only be called after the editor is initialized.</b>
         * @param {String} cmd The Midas command
         * @param {String/Boolean} value (optional) The value to pass to the command (defaults to null)
         */
        execCmd : function(cmd, value){
            var me = this,
                doc = me.getDoc(),
                undef;
            doc.execCommand(cmd, false, value === undef ? null : value);
            me.syncValue();
        },

        // private
        applyCommand : function(e){
            if (e.ctrlKey) {
                var me = this,
                    c = e.getCharCode(), cmd;
                if (c > 0) {
                    c = String.fromCharCode(c);
                    switch (c) {
                        case 'b':
                            cmd = 'bold';
                        break;
                        case 'i':
                            cmd = 'italic';
                        break;
                        case 'u':
                            cmd = 'underline';
                        break;
                    }
                    if (cmd) {
                        me.win.focus();
                        me.execCmd(cmd);
                        me.deferFocus();
                        e.preventDefault();
                    }
                }
            }
        },

        /**
         * Inserts the passed text at the current cursor position. Note: the editor must be initialized and activated
         * to insert text.
         * @param {String} text
         */
        insertAtCursor : function(text){
            var me = this,
                range;

            if (me.activated) {
                me.win.focus();
                if (Ext.isIE) {
                    range = me.getDoc().selection.createRange();
                    if (range) {
                        range.pasteHTML(text);
                        me.syncValue();
                        me.deferFocus();
                    }
                }else{
                    me.execCmd('InsertHTML', text);
                    me.deferFocus();
                }
            }
        },

        // private
        fixKeys: function() { // load time branching for fastest keydown performance
            if (Ext.isIE) {
                return function(e){
                    var me = this,
                        k = e.getKey(),
                        doc = me.getDoc(),
                        range, target;
                    if (k === e.TAB) {
                        e.stopEvent();
                        range = doc.selection.createRange();
                        if(range){
                            range.collapse(true);
                            range.pasteHTML('&nbsp;&nbsp;&nbsp;&nbsp;');
                            me.deferFocus();
                        }
                    }
                    else if (k === e.ENTER) {
                        range = doc.selection.createRange();
                        if (range) {
                            target = range.parentElement();
                            if(!target || target.tagName.toLowerCase() !== 'li'){
                                e.stopEvent();
                                range.pasteHTML('<br />');
                                range.collapse(false);
                                range.select();
                            }
                        }
                    }
                };
            }

            if (Ext.isOpera) {
                return function(e){
                    var me = this;
                    if (e.getKey() === e.TAB) {
                        e.stopEvent();
                        me.win.focus();
                        me.execCmd('InsertHTML','&nbsp;&nbsp;&nbsp;&nbsp;');
                        me.deferFocus();
                    }
                };
            }

            if (Ext.isWebKit) {
                return function(e){
                    var me = this,
                        k = e.getKey();
                    if (k === e.TAB) {
                        e.stopEvent();
                        me.execCmd('InsertText','\t');
                        me.deferFocus();
                    }
                    else if (k === e.ENTER) {
                        e.stopEvent();
                        me.execCmd('InsertHtml','<br /><br />');
                        me.deferFocus();
                    }
                };
            }

            return null; // not needed, so null
        }(),

        /**
         * Returns the editor's toolbar. <b>This is only available after the editor has been rendered.</b>
         * @return {Ext.toolbar.Toolbar}
         */
        getToolbar : function(){
            return this.toolbar;
        },

        /**
         * Object collection of toolbar tooltips for the buttons in the editor. The key
         * is the command id associated with that button and the value is a valid QuickTips object.
         * For example:
    <pre><code>
    {
        bold : {
            title: 'Bold (Ctrl+B)',
            text: 'Make the selected text bold.',
            cls: 'x-html-editor-tip'
        },
        italic : {
            title: 'Italic (Ctrl+I)',
            text: 'Make the selected text italic.',
            cls: 'x-html-editor-tip'
        },
        ...
    </code></pre>
        * @type Object
         */
        buttonTips : {
            bold : {
                title: 'Bold (Ctrl+B)',
                text: 'Make the selected text bold.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            italic : {
                title: 'Italic (Ctrl+I)',
                text: 'Make the selected text italic.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            underline : {
                title: 'Underline (Ctrl+U)',
                text: 'Underline the selected text.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            increasefontsize : {
                title: 'Grow Text',
                text: 'Increase the font size.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            decreasefontsize : {
                title: 'Shrink Text',
                text: 'Decrease the font size.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            backcolor : {
                title: 'Text Highlight Color',
                text: 'Change the background color of the selected text.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            forecolor : {
                title: 'Font Color',
                text: 'Change the color of the selected text.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            justifyleft : {
                title: 'Align Text Left',
                text: 'Align text to the left.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            justifycenter : {
                title: 'Center Text',
                text: 'Center text in the editor.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            justifyright : {
                title: 'Align Text Right',
                text: 'Align text to the right.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            insertunorderedlist : {
                title: 'Bullet List',
                text: 'Start a bulleted list.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            insertorderedlist : {
                title: 'Numbered List',
                text: 'Start a numbered list.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            createlink : {
                title: 'Hyperlink',
                text: 'Make the selected text a hyperlink.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            },
            sourceedit : {
                title: 'Source Edit',
                text: 'Switch to source editing mode.',
                cls: Ext.baseCSSPrefix + 'html-editor-tip'
            }
        }

        // hide stuff that is not compatible
        /**
         * @event blur
         * @hide
         */
        /**
         * @event change
         * @hide
         */
        /**
         * @event focus
         * @hide
         */
        /**
         * @event specialkey
         * @hide
         */
        /**
         * @cfg {String} fieldCls @hide
         */
        /**
         * @cfg {String} focusCls @hide
         */
        /**
         * @cfg {String} autoCreate @hide
         */
        /**
         * @cfg {String} inputType @hide
         */
        /**
         * @cfg {String} invalidCls @hide
         */
        /**
         * @cfg {String} invalidText @hide
         */
        /**
         * @cfg {String} msgFx @hide
         */
        /**
         * @cfg {Boolean} allowDomMove  @hide
         */
        /**
         * @cfg {String} applyTo @hide
         */
        /**
         * @cfg {String} readOnly  @hide
         */
        /**
         * @cfg {String} tabIndex  @hide
         */
        /**
         * @method validate
         * @hide
         */
    });