/*!
 * Ext JS Library 3.3.0
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
Ext.ns('Ext.ux.tree');

/**
 * @class Ext.ux.tree.XmlTreeLoader
 * @extends Ext.tree.TreeLoader
 * 

A TreeLoader that can convert an XML document into a hierarchy of {@link Ext.tree.TreeNode}s. * Any text value included as a text node in the XML will be added to the parent node as an attribute * called innerText. Also, the tag name of each XML node will be added to the tree node as * an attribute called tagName.

*

By default, this class expects that your source XML will provide the necessary attributes on each * node as expected by the {@link Ext.tree.TreePanel} to display and load properly. However, you can * provide your own custom processing of node attributes by overriding the {@link #processNode} method * and modifying the attributes as needed before they are used to create the associated TreeNode.

* @constructor * Creates a new XmlTreeloader. * @param {Object} config A config object containing config properties. */ Ext.ux.tree.XmlTreeLoader = Ext.extend(Ext.tree.TreeLoader, {
/** * @property XML_NODE_ELEMENT * XML element node (value 1, read-only) * @type Number */ XML_NODE_ELEMENT : 1,
/** * @property XML_NODE_TEXT * XML text node (value 3, read-only) * @type Number */ XML_NODE_TEXT : 3, // private override processResponse : function(response, node, callback){ var xmlData = response.responseXML, root = xmlData.documentElement || xmlData; try{ node.beginUpdate(); node.appendChild(this.parseXml(root)); node.endUpdate(); this.runCallback(callback, scope || node, [node]); }catch(e){ this.handleFailure(response); } }, // private parseXml : function(node) { var nodes = []; Ext.each(node.childNodes, function(n){ if(n.nodeType == this.XML_NODE_ELEMENT){ var treeNode = this.createNode(n); if(n.childNodes.length > 0){ var child = this.parseXml(n); if(typeof child == 'string'){ treeNode.attributes.innerText = child; }else{ treeNode.appendChild(child); } } nodes.push(treeNode); } else if(n.nodeType == this.XML_NODE_TEXT){ var text = n.nodeValue.trim(); if(text.length > 0){ return nodes = text; } } }, this); return nodes; }, // private override createNode : function(node){ var attr = { tagName: node.tagName }; Ext.each(node.attributes, function(a){ attr[a.nodeName] = a.nodeValue; }); this.processAttributes(attr); return Ext.ux.tree.XmlTreeLoader.superclass.createNode.call(this, attr); }, /* * Template method intended to be overridden by subclasses that need to provide * custom attribute processing prior to the creation of each TreeNode. This method * will be passed a config object containing existing TreeNode attribute name/value * pairs which can be modified as needed directly (no need to return the object). */ processAttributes: Ext.emptyFn }); //backwards compat Ext.ux.XmlTreeLoader = Ext.ux.tree.XmlTreeLoader;