XmlTreeLoader.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:4k
源码类别:
中间件编程
开发平台:
JavaScript
- /*!
- * Ext JS Library 3.0.0
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
- Ext.ns('Ext.ux.tree');
- /**
- * @class Ext.ux.tree.XmlTreeLoader
- * @extends Ext.tree.TreeLoader
- * <p>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 <tt>innerText</tt>. Also, the tag name of each XML node will be added to the tree node as
- * an attribute called <tt>tagName</tt>.</p>
- * <p>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.</p>
- * @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;
- var root = xmlData.documentElement || xmlData;
- try{
- node.beginUpdate();
- node.appendChild(this.parseXml(root));
- node.endUpdate();
- if(typeof callback == "function"){
- callback(this, 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;