Upgrade to ExtJS 3.0.0 - Released 07/06/2009
[extjs.git] / docs / source / debug1.html
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+<html>\r
+<head>\r
+  <title>The source code</title>\r
+    <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />\r
+    <script type="text/javascript" src="../resources/prettify/prettify.js"></script>\r
+</head>\r
+<body  onload="prettyPrint();">\r
+    <pre class="prettyprint lang-js">Ext.debug = {};
+
+(function(){
+
+var cp;
+
+function createConsole(){
+
+    var scriptPanel = new Ext.debug.ScriptsPanel();
+    var logView = new Ext.debug.LogPanel();
+    var tree = new Ext.debug.DomTree();
+    var compInspector = new Ext.debug.ComponentInspector();
+    var compInfoPanel = new Ext.debug.ComponentInfoPanel();
+    var storeInspector = new Ext.debug.StoreInspector();
+    var objInspector = new Ext.debug.ObjectInspector();
+
+    var tabs = new Ext.TabPanel({
+        activeTab: 0,
+        border: false,
+        tabPosition: 'bottom',
+        items: [{
+            title: 'Debug Console',
+            layout:'border',
+            items: [logView, scriptPanel]
+        },{
+            title: 'HTML Inspector',
+            layout:'border',
+            items: [tree]
+        },{
+            title: 'Component Inspector',
+            layout: 'border',
+            items: [compInspector,compInfoPanel]
+        },{
+            title: 'Object Inspector',
+            layout: 'border',
+            items: [objInspector]
+        },{
+            title: 'Data Stores',
+            layout: 'border',
+            items: [storeInspector]
+        }]
+    });
+
+    cp = new Ext.Panel({
+        id: 'x-debug-browser',
+        title: 'Console',
+        collapsible: true,
+        animCollapse: false,
+        style: 'position:absolute;left:0;bottom:0;z-index:101',
+        height:200,
+        logView: logView,
+        layout: 'fit',
+
+        tools:[{
+            id: 'close',
+            handler: function(){
+                cp.destroy();
+                cp = null;
+                Ext.EventManager.removeResizeListener(handleResize);
+            }
+        }],
+
+        items: tabs
+    });
+
+    cp.render(Ext.getBody());
+
+    cp.resizer = new Ext.Resizable(cp.el, {
+        minHeight:50,
+        handles: "n",
+        pinned: true,
+        transparent:true,
+        resizeElement : function(){
+            var box = this.proxy.getBox();
+            this.proxy.hide();
+            cp.setHeight(box.height);
+            return box;
+        }
+    });
+
+//     function handleResize(){
+//         cp.setWidth(Ext.getBody().getViewSize().width);
+//     }
+//     Ext.EventManager.onWindowResize(handleResize);
+//
+//     handleResize();
+
+    function handleResize(){
+        var b = Ext.getBody()
+        var size = b.getViewSize();
+        if(size.height < b.dom.scrollHeight) {
+            size.width -= 18;
+        }
+        cp.setWidth(size.width);
+    }
+    Ext.EventManager.onWindowResize(handleResize);
+    handleResize();
+}
+
+
+Ext.apply(Ext, {
+    log : function(){
+        if(!cp){
+            createConsole();
+        }
+        cp.logView.log.apply(cp.logView, arguments);
+    },
+
+    logf : function(format, arg1, arg2, etc){
+        Ext.log(String.format.apply(String, arguments));
+    },
+
+    dump : function(o){
+        if(typeof o == 'string' || typeof o == 'number' || typeof o == 'undefined' || Ext.isDate(o)){
+            Ext.log(o);
+        }else if(!o){
+            Ext.log("null");
+        }else if(typeof o != "object"){
+            Ext.log('Unknown return type');
+        }else if(Ext.isArray(o)){
+            Ext.log('['+o.join(',')+']');
+        }else{
+            var b = ["{\n"];
+            for(var key in o){
+                var to = typeof o[key];
+                if(to != "function" && to != "object"){
+                    b.push(String.format("  {0}: {1},\n", key, o[key]));
+                }
+            }
+            var s = b.join("");
+            if(s.length > 3){
+                s = s.substr(0, s.length-2);
+            }
+            Ext.log(s + "\n}");
+        }
+    },
+
+    _timers : {},
+
+    time : function(name){
+        name = name || "def";
+        Ext._timers[name] = new Date().getTime();
+    },
+
+    timeEnd : function(name, printResults){
+        var t = new Date().getTime();
+        name = name || "def";
+        var v = String.format("{0} ms", t-Ext._timers[name]);
+        Ext._timers[name] = new Date().getTime();
+        if(printResults !== false){
+            Ext.log('Timer ' + (name == "def" ? v : name + ": " + v));
+        }
+        return v;
+    }
+});
+
+})();
+
+
+Ext.debug.ScriptsPanel = Ext.extend(Ext.Panel, {
+    id:'x-debug-scripts',
+    region: 'east',
+    minWidth: 200,
+    split: true,
+    width: 350,
+    border: false,
+    layout:'anchor',
+    style:'border-width:0 0 0 1px;',
+
+    initComponent : function(){
+
+        this.scriptField = new Ext.form.TextArea({
+            anchor: '100% -26',
+            style:'border-width:0;'
+        });
+
+        this.trapBox = new Ext.form.Checkbox({
+            id: 'console-trap',
+            boxLabel: 'Trap Errors',
+            checked: true
+        });
+
+        this.toolbar = new Ext.Toolbar([{
+                text: 'Run',
+                scope: this,
+                handler: this.evalScript
+            },{
+                text: 'Clear',
+                scope: this,
+                handler: this.clear
+            },
+            '->',
+            this.trapBox,
+            ' ', ' '
+        ]);
+
+        this.items = [this.toolbar, this.scriptField];
+
+        Ext.debug.ScriptsPanel.superclass.initComponent.call(this);
+    },
+
+    evalScript : function(){
+        var s = this.scriptField.getValue();
+        if(this.trapBox.getValue()){
+            try{
+                var rt = eval(s);
+                Ext.dump(rt === undefined? '(no return)' : rt);
+            }catch(e){
+                Ext.log(e.message || e.descript);
+            }
+        }else{
+            var rt = eval(s);
+            Ext.dump(rt === undefined? '(no return)' : rt);
+        }
+    },
+
+    clear : function(){
+        this.scriptField.setValue('');
+        this.scriptField.focus();
+    }
+
+});
+
+Ext.debug.LogPanel = Ext.extend(Ext.Panel, {
+    autoScroll: true,
+    region: 'center',
+    border: false,
+    style:'border-width:0 1px 0 0',
+
+    log : function(){
+        var markup = [  '<div style="padding:5px !important;border-bottom:1px solid #ccc;">',
+                    Ext.util.Format.htmlEncode(Array.prototype.join.call(arguments, ', ')).replace(/\n/g, '<br />').replace(/\s/g, '&#160;'),
+                    '</div>'].join('');
+
+        this.body.insertHtml('beforeend', markup);
+        this.body.scrollTo('top', 100000);
+    },
+
+    clear : function(){
+        this.body.update('');
+        this.body.dom.scrollTop = 0;
+    }
+});
+
+Ext.debug.DomTree = Ext.extend(Ext.tree.TreePanel, {
+    enableDD:false ,
+    lines:false,
+    rootVisible:false,
+    animate:false,
+    hlColor:'ffff9c',
+    autoScroll: true,
+    region:'center',
+    border:false,
+
+    initComponent : function(){
+
+
+        Ext.debug.DomTree.superclass.initComponent.call(this);
+
+        // tree related stuff
+        var styles = false, hnode;
+        var nonSpace = /^\s*$/;
+        var html = Ext.util.Format.htmlEncode;
+        var ellipsis = Ext.util.Format.ellipsis;
+        var styleRe = /\s?([a-z\-]*)\:([^;]*)(?:[;\s\n\r]*)/gi;
+
+        function findNode(n){
+            if(!n || n.nodeType != 1 || n == document.body || n == document){
+                return false;
+            }
+            var pn = [n], p = n;
+            while((p = p.parentNode) && p.nodeType == 1 && p.tagName.toUpperCase() != 'HTML'){
+                pn.unshift(p);
+            }
+            var cn = hnode;
+            for(var i = 0, len = pn.length; i < len; i++){
+                cn.expand();
+                cn = cn.findChild('htmlNode', pn[i]);
+                if(!cn){ // in this dialog?
+                    return false;
+                }
+            }
+            cn.select();
+            var a = cn.ui.anchor;
+            treeEl.dom.scrollTop = Math.max(0 ,a.offsetTop-10);
+            //treeEl.dom.scrollLeft = Math.max(0 ,a.offsetLeft-10); no likey
+            cn.highlight();
+            return true;
+        }
+
+        function nodeTitle(n){
+            var s = n.tagName;
+            if(n.id){
+                s += '#'+n.id;
+            }else if(n.className){
+                s += '.'+n.className;
+            }
+            return s;
+        }
+
+        function onNodeSelect(t, n, last){
+            return;
+            if(last && last.unframe){
+                last.unframe();
+            }
+            var props = {};
+            if(n && n.htmlNode){
+                if(frameEl.pressed){
+                    n.frame();
+                }
+                if(inspecting){
+                    return;
+                }
+                addStyle.enable();
+                reload.setDisabled(n.leaf);
+                var dom = n.htmlNode;
+                stylePanel.setTitle(nodeTitle(dom));
+                if(styles && !showAll.pressed){
+                    var s = dom.style ? dom.style.cssText : '';
+                    if(s){
+                        var m;
+                        while ((m = styleRe.exec(s)) != null){
+                            props[m[1].toLowerCase()] = m[2];
+                        }
+                    }
+                }else if(styles){
+                    var cl = Ext.debug.cssList;
+                    var s = dom.style, fly = Ext.fly(dom);
+                    if(s){
+                        for(var i = 0, len = cl.length; i<len; i++){
+                            var st = cl[i];
+                            var v = s[st] || fly.getStyle(st);
+                            if(v != undefined && v !== null && v !== ''){
+                                props[st] = v;
+                            }
+                        }
+                    }
+                }else{
+                    for(var a in dom){
+                        var v = dom[a];
+                        if((isNaN(a+10)) && v != undefined && v !== null && v !== '' && !(Ext.isGecko && a[0] == a[0].toUpperCase())){
+                            props[a] = v;
+                        }
+                    }
+                }
+            }else{
+                if(inspecting){
+                    return;
+                }
+                addStyle.disable();
+                reload.disabled();
+            }
+            stylesGrid.setSource(props);
+            stylesGrid.treeNode = n;
+            stylesGrid.view.fitColumns();
+        }
+
+        this.loader = new Ext.tree.TreeLoader();
+        this.loader.load = function(n, cb){
+            var isBody = n.htmlNode == document.body;
+            var cn = n.htmlNode.childNodes;
+            for(var i = 0, c; c = cn[i]; i++){
+                if(isBody && c.id == 'x-debug-browser'){
+                    continue;
+                }
+                if(c.nodeType == 1){
+                    n.appendChild(new Ext.debug.HtmlNode(c));
+                }else if(c.nodeType == 3 && !nonSpace.test(c.nodeValue)){
+                    n.appendChild(new Ext.tree.TreeNode({
+                        text:'<em>' + ellipsis(html(String(c.nodeValue)), 35) + '</em>',
+                        cls: 'x-tree-noicon'
+                    }));
+                }
+            }
+            cb();
+        };
+
+        //tree.getSelectionModel().on('selectionchange', onNodeSelect, null, {buffer:250});
+
+        this.root = this.setRootNode(new Ext.tree.TreeNode('Ext'));
+
+        hnode = this.root.appendChild(new Ext.debug.HtmlNode(
+                document.getElementsByTagName('html')[0]
+        ));
+
+    }
+});
+
+Ext.debug.ComponentNodeUI = Ext.extend(Ext.tree.TreeNodeUI,{
+    onOver : function(e){
+        Ext.debug.ComponentNodeUI.superclass.onOver.call(this);
+        var cmp = this.node.attributes.component;
+        if (cmp.el && cmp.el.mask && cmp.id !='x-debug-browser') {
+            try { // Oddly bombs on some elements in IE, gets any we care about though
+                cmp.el.mask();
+            } catch(e) {}
+        }
+    },
+
+    onOut : function(e){
+        Ext.debug.ComponentNodeUI.superclass.onOut.call(this);
+        var cmp = this.node.attributes.component;
+        if (cmp.el && cmp.el.unmask && cmp.id !='x-debug-browser') {
+            try {
+                cmp.el.unmask();
+            } catch(e) {}
+        }
+    }
+});
+
+Ext.debug.ComponentInspector = Ext.extend(Ext.tree.TreePanel, {
+    enableDD:false ,
+    lines:false,
+    rootVisible:false,
+    animate:false,
+    hlColor:'ffff9c',
+    autoScroll: true,
+    region:'center',
+    border:false,
+
+    initComponent : function(){
+        this.loader = new Ext.tree.TreeLoader();
+        this.bbar = new Ext.Toolbar([{
+            text: 'Refresh',
+            handler: this.refresh,
+            scope: this
+        }]);
+        Ext.debug.ComponentInspector.superclass.initComponent.call(this);
+
+        this.root = this.setRootNode(new Ext.tree.TreeNode({
+            text: 'Ext Components',
+            component: Ext.ComponentMgr.all,
+            leaf: false
+        }));
+        this.parseRootNode();
+
+        this.on('click', this.onClick, this);
+    },
+
+    createNode: function(n,c) {
+        var leaf = (c.items && c.items.length > 0);
+        return n.appendChild(new Ext.tree.TreeNode({
+            text: c.id + (c.getXType() ? ' [ ' + c.getXType() + ' ]': '' ),
+            component: c,
+            uiProvider:Ext.debug.ComponentNodeUI,
+            leaf: !leaf
+        }));
+    },
+
+    parseChildItems: function(n) {
+        var cn = n.attributes.component.items;
+        if (cn) {
+            for (var i = 0;i < cn.length; i++) {
+                var c = cn.get(i);
+                if (c.id != this.id && c.id != this.bottomToolbar.id) {
+                    var newNode = this.createNode(n,c);
+                    if (!newNode.leaf) {
+                        this.parseChildItems(newNode)
+                    }
+                }
+            }
+        }
+    },
+
+    parseRootNode: function() {
+        var n = this.root;
+        var cn = n.attributes.component.items;
+        for (var i = 0,c;c = cn[i];i++) {
+            if (c.id != this.id && c.id != this.bottomToolbar.id) {
+                if (!c.ownerCt) {
+                    var newNode = this.createNode(n,c);
+                    if (!newNode.leaf) {
+                        this.parseChildItems(newNode);
+                    }
+                }
+            }
+        }
+    },
+
+    onClick: function(node, e) {
+        var oi = Ext.getCmp('x-debug-objinspector');
+        oi.refreshNodes(node.attributes.component);
+        oi.ownerCt.show();
+    },
+
+    refresh: function() {
+        while (this.root.firstChild) {
+            this.root.removeChild(this.root.firstChild);
+        }
+        this.parseRootNode();
+        var ci = Ext.getCmp('x-debug-compinfo');
+        if (ci) {
+            ci.message('refreshed component tree - '+Ext.ComponentMgr.all.length)
+        }
+    }
+});
+
+Ext.debug.ComponentInfoPanel = Ext.extend(Ext.Panel,{
+    id:'x-debug-compinfo',
+    region: 'east',
+    minWidth: 200,
+    split: true,
+    width: 350,
+    border: false,
+    autoScroll: true,
+    layout:'anchor',
+    style:'border-width:0 0 0 1px;',
+
+    initComponent: function() {
+        this.watchBox = new Ext.form.Checkbox({
+            id: 'x-debug-watchcomp',
+            boxLabel: 'Watch ComponentMgr',
+            listeners: {
+                check: function(cb, val) {
+                    if (val) {
+                        Ext.ComponentMgr.all.on('add', this.onAdd, this);
+                        Ext.ComponentMgr.all.on('remove', this.onRemove, this);
+                    } else {
+                        Ext.ComponentMgr.all.un('add', this.onAdd, this);
+                        Ext.ComponentMgr.all.un('remove', this.onRemove, this);
+                    }
+                },
+                scope: this
+            }
+        });
+
+        this.tbar = new Ext.Toolbar([{
+            text: 'Clear',
+            handler: this.clear,
+            scope: this
+        },'->',this.watchBox
+        ]);
+        Ext.debug.ComponentInfoPanel.superclass.initComponent.call(this);
+    },
+
+    onAdd: function(i, o, key) {
+        var markup = ['<div style="padding:5px !important;border-bottom:1px solid #ccc;">',
+                    'Added: '+o.id,
+                    '</div>'].join('');
+        this.insertMarkup(markup);
+    },
+
+    onRemove: function(o, key) {
+        var markup = ['<div style="padding:5px !important;border-bottom:1px solid #ccc;">',
+                    'Removed: '+o.id,
+                    '</div>'].join('');
+        this.insertMarkup(markup);
+    },
+
+    message: function(msg) {
+        var markup = ['<div style="padding:5px !important;border-bottom:1px solid #ccc;">',
+                    msg,
+                    '</div>'].join('');
+        this.insertMarkup(markup);
+    },
+    insertMarkup: function(markup) {
+        this.body.insertHtml('beforeend', markup);
+        this.body.scrollTo('top', 100000);
+    },
+    clear : function(){
+        this.body.update('');
+        this.body.dom.scrollTop = 0;
+    }
+});
+
+Ext.debug.ColumnNodeUI = Ext.extend(Ext.tree.TreeNodeUI, {
+    focus: Ext.emptyFn, // prevent odd scrolling behavior
+
+    renderElements : function(n, a, targetNode, bulkRender){
+        this.indentMarkup = n.parentNode ? n.parentNode.ui.getChildIndent() : '';
+
+        var t = n.getOwnerTree();
+        var cols = t.columns;
+        var bw = t.borderWidth;
+        var c = cols[0];
+
+        var buf = [
+             '<li class="x-tree-node"><div ext:tree-node-id="',n.id,'" class="x-tree-node-el x-tree-node-leaf ', a.cls,'">',
+                '<div class="x-tree-col" style="width:',c.width-bw,'px;">',
+                    '<span class="x-tree-node-indent">',this.indentMarkup,"</span>",
+                    '<img src="', this.emptyIcon, '" class="x-tree-ec-icon x-tree-elbow">',
+                    '<img src="', a.icon || this.emptyIcon, '" class="x-tree-node-icon',(a.icon ? " x-tree-node-inline-icon" : ""),(a.iconCls ? " "+a.iconCls : ""),'" unselectable="on">',
+                    '<a hidefocus="on" class="x-tree-node-anchor" href="',a.href ? a.href : "#",'" tabIndex="1" ',
+                    a.hrefTarget ? ' target="'+a.hrefTarget+'"' : "", '>',
+                    '<span unselectable="on">', n.text || (c.renderer ? c.renderer(a[c.dataIndex], n, a) : a[c.dataIndex]),"</span></a>",
+                "</div>"];
+         for(var i = 1, len = cols.length; i < len; i++){
+             c = cols[i];
+
+             buf.push('<div class="x-tree-col ',(c.cls?c.cls:''),'" style="width:',c.width-bw,'px;">',
+                        '<div class="x-tree-col-text">',(c.renderer ? c.renderer(a[c.dataIndex], n, a) : a[c.dataIndex]),"</div>",
+                      "</div>");
+         }
+         buf.push(
+            '<div class="x-clear"></div></div>',
+            '<ul class="x-tree-node-ct" style="display:none;"></ul>',
+            "</li>");
+
+        if(bulkRender !== true && n.nextSibling && n.nextSibling.ui.getEl()){
+            this.wrap = Ext.DomHelper.insertHtml("beforeBegin",
+                                n.nextSibling.ui.getEl(), buf.join(""));
+        }else{
+            this.wrap = Ext.DomHelper.insertHtml("beforeEnd", targetNode, buf.join(""));
+        }
+
+        this.elNode = this.wrap.childNodes[0];
+        this.ctNode = this.wrap.childNodes[1];
+        var cs = this.elNode.firstChild.childNodes;
+        this.indentNode = cs[0];
+        this.ecNode = cs[1];
+        this.iconNode = cs[2];
+        this.anchor = cs[3];
+        this.textNode = cs[3].firstChild;
+    }
+});
+
+Ext.debug.ObjectInspector = Ext.extend(Ext.tree.TreePanel, {
+    id: 'x-debug-objinspector',
+    enableDD:false ,
+    lines:false,
+    rootVisible:false,
+    animate:false,
+    hlColor:'ffff9c',
+    autoScroll: true,
+    region:'center',
+    border:false,
+    lines:false,
+    borderWidth: Ext.isBorderBox ? 0 : 2, // the combined left/right border for each cell
+    cls:'x-column-tree',
+
+    initComponent : function(){
+        this.showFunc = false;
+        this.toggleFunc = function() {
+            this.showFunc = !this.showFunc;
+            this.refreshNodes(this.currentObject);
+        }
+        this.bbar = new Ext.Toolbar([{
+            text: 'Show Functions',
+            enableToggle: true,
+            pressed: false,
+            handler: this.toggleFunc,
+            scope: this
+        }]);
+
+        Ext.apply(this,{
+            title: ' ',
+            loader: new Ext.tree.TreeLoader(),
+            columns:[{
+                header:'Property',
+                width: 300,
+                dataIndex:'name'
+            },{
+                header:'Value',
+                width: 900,
+                dataIndex:'value'
+            }]
+        });
+
+        Ext.debug.ObjectInspector.superclass.initComponent.call(this);
+
+        this.root = this.setRootNode(new Ext.tree.TreeNode({
+            text: 'Dummy Node',
+            leaf: false
+        }));
+
+        if (this.currentObject) {
+            this.parseNodes();
+        }
+    },
+
+    refreshNodes: function(newObj) {
+        this.currentObject = newObj;
+        var node = this.root;
+        while(node.firstChild){
+            node.removeChild(node.firstChild);
+        }
+        this.parseNodes();
+    },
+
+    parseNodes: function() {
+        for (var o in this.currentObject) {
+            if (!this.showFunc) {
+                if (Ext.isFunction(this.currentObject[o])) {
+                    continue;
+                }
+            }
+            this.createNode(o);
+        }
+    },
+
+    createNode: function(o) {
+        return this.root.appendChild(new Ext.tree.TreeNode({
+            name: o,
+            value: this.currentObject[o],
+            uiProvider:Ext.debug.ColumnNodeUI,
+            iconCls: 'x-debug-node',
+            leaf: true
+        }));
+    },
+
+    onRender : function(){
+        Ext.debug.ObjectInspector.superclass.onRender.apply(this, arguments);
+        this.headers = this.header.createChild({cls:'x-tree-headers'});
+
+        var cols = this.columns, c;
+        var totalWidth = 0;
+
+        for(var i = 0, len = cols.length; i < len; i++){
+             c = cols[i];
+             totalWidth += c.width;
+             this.headers.createChild({
+                 cls:'x-tree-hd ' + (c.cls?c.cls+'-hd':''),
+                 cn: {
+                     cls:'x-tree-hd-text',
+                     html: c.header
+                 },
+                 style:'width:'+(c.width-this.borderWidth)+'px;'
+             });
+        }
+        this.headers.createChild({cls:'x-clear'});
+        // prevent floats from wrapping when clipped
+        this.headers.setWidth(totalWidth);
+        this.innerCt.setWidth(totalWidth);
+    }
+});
+
+
+Ext.debug.StoreInspector = Ext.extend(Ext.tree.TreePanel, {
+    enableDD:false ,
+    lines:false,
+    rootVisible:false,
+    animate:false,
+    hlColor:'ffff9c',
+    autoScroll: true,
+    region:'center',
+    border:false,
+
+    initComponent: function() {
+        this.bbar = new Ext.Toolbar([{
+            text: 'Refresh',
+            handler: this.refresh,
+            scope: this
+        }]);
+        Ext.debug.StoreInspector.superclass.initComponent.call(this);
+
+        this.root = this.setRootNode(new Ext.tree.TreeNode({
+            text: 'Data Stores',
+            leaf: false
+        }));
+        this.on('click', this.onClick, this);
+
+        this.parseStores();
+    },
+
+    parseStores: function() {
+        var cn = Ext.StoreMgr.items;
+        for (var i = 0,c;c = cn[i];i++) {
+            this.root.appendChild({
+                text: c.storeId + ' - ' + c.totalLength + ' records',
+                component: c,
+                leaf: true
+            });
+        }
+    },
+
+    onClick: function(node, e) {
+        var oi = Ext.getCmp('x-debug-objinspector');
+        oi.refreshNodes(node.attributes.component);
+        oi.ownerCt.show();
+    },
+
+    refresh: function() {
+        while (this.root.firstChild) {
+            this.root.removeChild(this.root.firstChild);
+        }
+        this.parseStores();
+    }
+});
+
+// highly unusual class declaration
+Ext.debug.HtmlNode = function(){
+    var html = Ext.util.Format.htmlEncode;
+    var ellipsis = Ext.util.Format.ellipsis;
+    var nonSpace = /^\s*$/;
+
+    var attrs = [
+        {n: 'id', v: 'id'},
+        {n: 'className', v: 'class'},
+        {n: 'name', v: 'name'},
+        {n: 'type', v: 'type'},
+        {n: 'src', v: 'src'},
+        {n: 'href', v: 'href'}
+    ];
+
+    function hasChild(n){
+        for(var i = 0, c; c = n.childNodes[i]; i++){
+            if(c.nodeType == 1){
+                return true;
+            }
+        }
+        return false;
+    }
+
+    function renderNode(n, leaf){
+        var tag = n.tagName.toLowerCase();
+        var s = '&lt;' + tag;
+        for(var i = 0, len = attrs.length; i < len; i++){
+            var a = attrs[i];
+            var v = n[a.n];
+            if(v && !nonSpace.test(v)){
+                s += ' ' + a.v + '=&quot;<i>' + html(v) +'</i>&quot;';
+            }
+        }
+        var style = n.style ? n.style.cssText : '';
+        if(style){
+            s += ' style=&quot;<i>' + html(style.toLowerCase()) +'</i>&quot;';
+        }
+        if(leaf && n.childNodes.length > 0){
+            s+='&gt;<em>' + ellipsis(html(String(n.innerHTML)), 35) + '</em>&lt;/'+tag+'&gt;';
+        }else if(leaf){
+            s += ' /&gt;';
+        }else{
+            s += '&gt;';
+        }
+        return s;
+    }
+
+    var HtmlNode = function(n){
+        var leaf = !hasChild(n);
+        this.htmlNode = n;
+        this.tagName = n.tagName.toLowerCase();
+        var attr = {
+            text : renderNode(n, leaf),
+            leaf : leaf,
+            cls: 'x-tree-noicon'
+        };
+        HtmlNode.superclass.constructor.call(this, attr);
+        this.attributes.htmlNode = n; // for searching
+        if(!leaf){
+            this.on('expand', this.onExpand,  this);
+            this.on('collapse', this.onCollapse,  this);
+        }
+    };
+
+
+    Ext.extend(HtmlNode, Ext.tree.AsyncTreeNode, {
+        cls: 'x-tree-noicon',
+        preventHScroll: true,
+        refresh : function(highlight){
+            var leaf = !hasChild(this.htmlNode);
+            this.setText(renderNode(this.htmlNode, leaf));
+            if(highlight){
+                Ext.fly(this.ui.textNode).highlight();
+            }
+        },
+
+        onExpand : function(){
+            if(!this.closeNode && this.parentNode){
+                this.closeNode = this.parentNode.insertBefore(new Ext.tree.TreeNode({
+                    text:'&lt;/' + this.tagName + '&gt;',
+                    cls: 'x-tree-noicon'
+                }), this.nextSibling);
+            }else if(this.closeNode){
+                this.closeNode.ui.show();
+            }
+        },
+
+        onCollapse : function(){
+            if(this.closeNode){
+                this.closeNode.ui.hide();
+            }
+        },
+
+        render : function(bulkRender){
+            HtmlNode.superclass.render.call(this, bulkRender);
+        },
+
+        highlightNode : function(){
+            //Ext.fly(this.htmlNode).highlight();
+        },
+
+        highlight : function(){
+            //Ext.fly(this.ui.textNode).highlight();
+        },
+
+        frame : function(){
+            this.htmlNode.style.border = '1px solid #0000ff';
+            //this.highlightNode();
+        },
+
+        unframe : function(){
+            //Ext.fly(this.htmlNode).removeClass('x-debug-frame');
+            this.htmlNode.style.border = '';
+        }
+    });
+
+    return HtmlNode;
+}();</pre>    \r
+</body>\r
+</html>
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