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<html><head><title>TreeNode.js</title><link rel="stylesheet" type="text/css" href="../resources/style.css" media="screen"/></head><body><h1>TreeNode.js</h1><pre class="highlighted"><code><i>/**
* @class Ext.tree.TreeNode
* @extends Ext.data.Node
* @cfg {String} text The text <b>for</b> this node
* @cfg {Boolean} expanded true to start the node expanded
* @cfg {Boolean} allowDrag false to make <b>this</b> node undraggable <b>if</b> DD is on (defaults to true)
* @cfg {Boolean} allowDrop false <b>if</b> this node cannot be drop on
* @cfg {Boolean} disabled true to start the node disabled
* @cfg {String} icon The path to an icon <b>for</b> the node. The preferred way to <b>do</b> this
* is to use the cls or iconCls attributes and add the icon via a CSS background image.
* @cfg {String} cls A css class to be added to the node
* @cfg {String} iconCls A css class to be added to the nodes icon element <b>for</b> applying css background images
* @cfg {String} href URL of the link used <b>for</b> the node (defaults to #)
* @cfg {String} hrefTarget target frame <b>for</b> the link
* @cfg {String} qtip An Ext QuickTip <b>for</b> the node
* @cfg {Boolean} singleClickExpand True <b>for</b> single click expand on <b>this</b> node
* @cfg {Function} uiProvider A UI &lt;b&gt;class&lt;/b&gt; to use <b>for</b> this node (defaults to Ext.tree.TreeNodeUI)
* @constructor
* @param {Object/String} attributes The attributes/config <b>for</b> the node or just a string <b>with</b> the text <b>for</b> the node
*/</i>
Ext.tree.TreeNode = <b>function</b>(attributes){
attributes = attributes || {};
<b>if</b>(typeof attributes == &quot;string&quot;){
attributes = {text: attributes};
}
<b>this</b>.childrenRendered = false;
<b>this</b>.rendered = false;
Ext.tree.TreeNode.superclass.constructor.call(<b>this</b>, attributes);
<b>this</b>.expanded = attributes.expanded === true;
<b>this</b>.isTarget = attributes.isTarget !== false;
<b>this</b>.draggable = attributes.draggable !== false &amp;&amp; attributes.allowDrag !== false;
<b>this</b>.allowChildren = attributes.allowChildren !== false &amp;&amp; attributes.allowDrop !== false;
<i>/**
* Read-only. The text <b>for</b> this node. To change it use setText().
* @type String
*/</i>
<b>this</b>.text = attributes.text;
<i>/**
* True <b>if</b> this node is disabled.
* @type Boolean
*/</i>
<b>this</b>.disabled = attributes.disabled === true;
<b>this</b>.addEvents({
<i>/**
* @event textchange
* Fires when the text <b>for</b> this node is changed
* @param {Node} <b>this</b> This node
* @param {String} text The <b>new</b> text
* @param {String} oldText The old text
*/</i>
&quot;textchange&quot; : true,
<i>/**
* @event beforeexpand
* Fires before <b>this</b> node is expanded, <b>return</b> false to cancel.
* @param {Node} <b>this</b> This node
* @param {Boolean} deep
* @param {Boolean} anim
*/</i>
&quot;beforeexpand&quot; : true,
<i>/**
* @event beforecollapse
* Fires before <b>this</b> node is collapsed, <b>return</b> false to cancel.
* @param {Node} <b>this</b> This node
* @param {Boolean} deep
* @param {Boolean} anim
*/</i>
&quot;beforecollapse&quot; : true,
<i>/**
* @event expand
* Fires when <b>this</b> node is expanded
* @param {Node} <b>this</b> This node
*/</i>
&quot;expand&quot; : true,
<i>/**
* @event disabledchange
* Fires when the disabled status of <b>this</b> node changes
* @param {Node} <b>this</b> This node
* @param {Boolean} disabled
*/</i>
&quot;disabledchange&quot; : true,
<i>/**
* @event collapse
* Fires when <b>this</b> node is collapsed
* @param {Node} <b>this</b> This node
*/</i>
&quot;collapse&quot; : true,
<i>/**
* @event beforeclick
* Fires before click processing. Return false to cancel the <b>default</b> action.
* @param {Node} <b>this</b> This node
* @param {Ext.EventObject} e The event object
*/</i>
&quot;beforeclick&quot;:true,
<i>/**
* @event click
* Fires when <b>this</b> node is clicked
* @param {Node} <b>this</b> This node
* @param {Ext.EventObject} e The event object
*/</i>
&quot;click&quot;:true,
<i>/**
* @event dblclick
* Fires when <b>this</b> node is double clicked
* @param {Node} <b>this</b> This node
* @param {Ext.EventObject} e The event object
*/</i>
&quot;dblclick&quot;:true,
<i>/**
* @event contextmenu
* Fires when <b>this</b> node is right clicked
* @param {Node} <b>this</b> This node
* @param {Ext.EventObject} e The event object
*/</i>
&quot;contextmenu&quot;:true,
<i>/**
* @event beforechildrenrendered
* Fires right before the child nodes <b>for</b> this node are rendered
* @param {Node} <b>this</b> This node
*/</i>
&quot;beforechildrenrendered&quot;:true
});
<b>var</b> uiClass = <b>this</b>.attributes.uiProvider || Ext.tree.TreeNodeUI;
<i>/**
* Read-only. The UI <b>for</b> this node
* @type TreeNodeUI
*/</i>
<b>this</b>.ui = <b>new</b> uiClass(<b>this</b>);
};
Ext.extend(Ext.tree.TreeNode, Ext.data.Node, {
preventHScroll: true,
<i>/**
* Returns true <b>if</b> this node is expanded
* @<b>return</b> {Boolean}
*/</i>
isExpanded : <b>function</b>(){
<b>return</b> this.expanded;
},
<i>/**
* Returns the UI object <b>for</b> this node
* @<b>return</b> {TreeNodeUI}
*/</i>
getUI : <b>function</b>(){
<b>return</b> this.ui;
},
<i>// private override</i>
setFirstChild : <b>function</b>(node){
<b>var</b> of = <b>this</b>.firstChild;
Ext.tree.TreeNode.superclass.setFirstChild.call(<b>this</b>, node);
<b>if</b>(this.childrenRendered &amp;&amp; of &amp;&amp; node != of){
of.renderIndent(true, true);
}
<b>if</b>(this.rendered){
<b>this</b>.renderIndent(true, true);
}
},
<i>// private override</i>
setLastChild : <b>function</b>(node){
<b>var</b> ol = <b>this</b>.lastChild;
Ext.tree.TreeNode.superclass.setLastChild.call(<b>this</b>, node);
<b>if</b>(this.childrenRendered &amp;&amp; ol &amp;&amp; node != ol){
ol.renderIndent(true, true);
}
<b>if</b>(this.rendered){
<b>this</b>.renderIndent(true, true);
}
},
<i>// these methods are overridden to provide lazy rendering support</i>
<i>// private override</i>
appendChild : <b>function</b>(){
<b>var</b> node = Ext.tree.TreeNode.superclass.appendChild.apply(<b>this</b>, arguments);
<b>if</b>(node &amp;&amp; <b>this</b>.childrenRendered){
node.render();
}
<b>this</b>.ui.updateExpandIcon();
<b>return</b> node;
},
<i>// private override</i>
removeChild : <b>function</b>(node){
<b>this</b>.ownerTree.getSelectionModel().unselect(node);
Ext.tree.TreeNode.superclass.removeChild.apply(<b>this</b>, arguments);
<i>// <b>if</b> it's been rendered remove dom node</i>
<b>if</b>(this.childrenRendered){
node.ui.remove();
}
<b>if</b>(this.childNodes.length &lt; 1){
<b>this</b>.collapse(false, false);
}<b>else</b>{
<b>this</b>.ui.updateExpandIcon();
}
<b>return</b> node;
},
<i>// private override</i>
insertBefore : <b>function</b>(node, refNode){
<b>var</b> newNode = Ext.tree.TreeNode.superclass.insertBefore.apply(<b>this</b>, arguments);
<b>if</b>(newNode &amp;&amp; refNode &amp;&amp; <b>this</b>.childrenRendered){
node.render();
}
<b>this</b>.ui.updateExpandIcon();
<b>return</b> newNode;
},
<i>/**
* Sets the text <b>for</b> this node
* @param {String} text
*/</i>
setText : <b>function</b>(text){
<b>var</b> oldText = <b>this</b>.text;
<b>this</b>.text = text;
<b>this</b>.attributes.text = text;
<b>if</b>(this.rendered){ <i>// event without subscribing</i>
<b>this</b>.ui.onTextChange(<b>this</b>, text, oldText);
}
<b>this</b>.fireEvent(&quot;textchange&quot;, <b>this</b>, text, oldText);
},
<i>/**
* Triggers selection of <b>this</b> node
*/</i>
select : <b>function</b>(){
<b>this</b>.getOwnerTree().getSelectionModel().select(<b>this</b>);
},
<i>/**
* Triggers deselection of <b>this</b> node
*/</i>
unselect : <b>function</b>(){
<b>this</b>.getOwnerTree().getSelectionModel().unselect(<b>this</b>);
},
<i>/**
* Returns true <b>if</b> this node is selected
* @<b>return</b> {Boolean}
*/</i>
isSelected : <b>function</b>(){
<b>return</b> this.getOwnerTree().getSelectionModel().isSelected(<b>this</b>);
},
<i>/**
* Expand <b>this</b> node.
* @param {Boolean} deep (optional) True to expand all children as well
* @param {Boolean} anim (optional) false to cancel the <b>default</b> animation
* @param {Function} callback (optional) A callback to be called when
* expanding <b>this</b> node completes (does not wait <b>for</b> deep expand to complete).
* Called <b>with</b> 1 parameter, <b>this</b> node.
*/</i>
expand : <b>function</b>(deep, anim, callback){
<b>if</b>(!<b>this</b>.expanded){
<b>if</b>(this.fireEvent(&quot;beforeexpand&quot;, <b>this</b>, deep, anim) === false){
<b>return</b>;
}
<b>if</b>(!<b>this</b>.childrenRendered){
<b>this</b>.renderChildren();
}
<b>this</b>.expanded = true;
<b>if</b>(!<b>this</b>.isHiddenRoot() &amp;&amp; (<b>this</b>.getOwnerTree().animate &amp;&amp; anim !== false) || anim){
<b>this</b>.ui.animExpand(<b>function</b>(){
<b>this</b>.fireEvent(&quot;expand&quot;, <b>this</b>);
<b>if</b>(typeof callback == &quot;<b>function</b>&quot;){
callback(<b>this</b>);
}
<b>if</b>(deep === true){
<b>this</b>.expandChildNodes(true);
}
}.createDelegate(<b>this</b>));
<b>return</b>;
}<b>else</b>{
<b>this</b>.ui.expand();
<b>this</b>.fireEvent(&quot;expand&quot;, <b>this</b>);
<b>if</b>(typeof callback == &quot;<b>function</b>&quot;){
callback(<b>this</b>);
}
}
}<b>else</b>{
<b>if</b>(typeof callback == &quot;<b>function</b>&quot;){
callback(<b>this</b>);
}
}
<b>if</b>(deep === true){
<b>this</b>.expandChildNodes(true);
}
},
isHiddenRoot : <b>function</b>(){
<b>return</b> this.isRoot &amp;&amp; !<b>this</b>.getOwnerTree().rootVisible;
},
<i>/**
* Collapse <b>this</b> node.
* @param {Boolean} deep (optional) True to collapse all children as well
* @param {Boolean} anim (optional) false to cancel the <b>default</b> animation
*/</i>
collapse : <b>function</b>(deep, anim){
<b>if</b>(this.expanded &amp;&amp; !<b>this</b>.isHiddenRoot()){
<b>if</b>(this.fireEvent(&quot;beforecollapse&quot;, <b>this</b>, deep, anim) === false){
<b>return</b>;
}
<b>this</b>.expanded = false;
<b>if</b>((<b>this</b>.getOwnerTree().animate &amp;&amp; anim !== false) || anim){
<b>this</b>.ui.animCollapse(<b>function</b>(){
<b>this</b>.fireEvent(&quot;collapse&quot;, <b>this</b>);
<b>if</b>(deep === true){
<b>this</b>.collapseChildNodes(true);
}
}.createDelegate(<b>this</b>));
<b>return</b>;
}<b>else</b>{
<b>this</b>.ui.collapse();
<b>this</b>.fireEvent(&quot;collapse&quot;, <b>this</b>);
}
}
<b>if</b>(deep === true){
<b>var</b> cs = <b>this</b>.childNodes;
<b>for</b>(var i = 0, len = cs.length; i &lt; len; i++) {
cs[i].collapse(true);
}
}
},
<i>// private</i>
delayedExpand : <b>function</b>(delay){
<b>if</b>(!<b>this</b>.expandProcId){
<b>this</b>.expandProcId = <b>this</b>.expand.defer(delay, <b>this</b>);
}
},
<i>// private</i>
cancelExpand : <b>function</b>(){
<b>if</b>(this.expandProcId){
clearTimeout(<b>this</b>.expandProcId);
}
<b>this</b>.expandProcId = false;
},
<i>/**
* Toggles expanded/collapsed state of the node
*/</i>
toggle : <b>function</b>(){
<b>if</b>(this.expanded){
<b>this</b>.collapse();
}<b>else</b>{
<b>this</b>.expand();
}
},
<i>/**
* Ensures all parent nodes are expanded
*/</i>
ensureVisible : <b>function</b>(callback){
<b>var</b> tree = <b>this</b>.getOwnerTree();
tree.expandPath(<b>this</b>.getPath(), false, <b>function</b>(){
tree.getEl().scrollChildIntoView(<b>this</b>.ui.anchor);
Ext.callback(callback);
}.createDelegate(<b>this</b>));
},
<i>/**
* Expand all child nodes
* @param {Boolean} deep (optional) true <b>if</b> the child nodes should also expand their child nodes
*/</i>
expandChildNodes : <b>function</b>(deep){
<b>var</b> cs = <b>this</b>.childNodes;
<b>for</b>(var i = 0, len = cs.length; i &lt; len; i++) {
cs[i].expand(deep);
}
},
<i>/**
* Collapse all child nodes
* @param {Boolean} deep (optional) true <b>if</b> the child nodes should also collapse their child nodes
*/</i>
collapseChildNodes : <b>function</b>(deep){
<b>var</b> cs = <b>this</b>.childNodes;
<b>for</b>(var i = 0, len = cs.length; i &lt; len; i++) {
cs[i].collapse(deep);
}
},
<i>/**
* Disables <b>this</b> node
*/</i>
disable : <b>function</b>(){
<b>this</b>.disabled = true;
<b>this</b>.unselect();
<b>if</b>(this.rendered &amp;&amp; <b>this</b>.ui.onDisableChange){ <i>// event without subscribing</i>
<b>this</b>.ui.onDisableChange(<b>this</b>, true);
}
<b>this</b>.fireEvent(&quot;disabledchange&quot;, <b>this</b>, true);
},
<i>/**
* Enables <b>this</b> node
*/</i>
enable : <b>function</b>(){
<b>this</b>.disabled = false;
<b>if</b>(this.rendered &amp;&amp; <b>this</b>.ui.onDisableChange){ <i>// event without subscribing</i>
<b>this</b>.ui.onDisableChange(<b>this</b>, false);
}
<b>this</b>.fireEvent(&quot;disabledchange&quot;, <b>this</b>, false);
},
<i>// private</i>
renderChildren : <b>function</b>(suppressEvent){
<b>if</b>(suppressEvent !== false){
<b>this</b>.fireEvent(&quot;beforechildrenrendered&quot;, <b>this</b>);
}
<b>var</b> cs = <b>this</b>.childNodes;
<b>for</b>(var i = 0, len = cs.length; i &lt; len; i++){
cs[i].render(true);
}
<b>this</b>.childrenRendered = true;
},
<i>// private</i>
sort : <b>function</b>(fn, scope){
Ext.tree.TreeNode.superclass.sort.apply(<b>this</b>, arguments);
<b>if</b>(this.childrenRendered){
<b>var</b> cs = <b>this</b>.childNodes;
<b>for</b>(var i = 0, len = cs.length; i &lt; len; i++){
cs[i].render(true);
}
}
},
<i>// private</i>
render : <b>function</b>(bulkRender){
<b>this</b>.ui.render(bulkRender);
<b>if</b>(!<b>this</b>.rendered){
<b>this</b>.rendered = true;
<b>if</b>(this.expanded){
<b>this</b>.expanded = false;
<b>this</b>.expand(false, false);
}
}
},
<i>// private</i>
renderIndent : <b>function</b>(deep, refresh){
<b>if</b>(refresh){
<b>this</b>.ui.childIndent = null;
}
<b>this</b>.ui.renderIndent();
<b>if</b>(deep === true &amp;&amp; <b>this</b>.childrenRendered){
<b>var</b> cs = <b>this</b>.childNodes;
<b>for</b>(var i = 0, len = cs.length; i &lt; len; i++){
cs[i].renderIndent(true, refresh);
}
}
}
});</code></pre><hr><div style="font-size:10px;text-align:center;color:gray;">Ext - Copyright &copy; 2006-2007 Ext JS, LLC<br />All rights reserved.</div>
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