git.roojs.org Git - roojs1/blob - docs/src/Roo_tree_TreeLoader.js.html

   1 <html><head><title>/home/edward/gitlive/roojs1/Roo/tree/TreeLoader.js</title><link rel="stylesheet" type="text/css" href="../../css/highlight-js.css"/></head><body class="highlightpage"><code class="jsdoc-pretty"><span class="jsdoc-comment">/*
   2  * Based on:
   3  * Ext JS Library 1.1.1
   4  * Copyright(c) 2006-2007, Ext JS, LLC.
   5  *
   6  * Originally Released Under LGPL - original licence link has changed is not relivant.
   7  *
   8  * Fork - LGPL
   9  * &lt;script type=&quot;text/javascript&quot;&gt;
  10  */
  11 /**
  12  * @class Roo.tree.TreeLoader
  13  * @extends Roo.util.Observable
  14  * A TreeLoader provides for lazy loading of an {@link Roo.tree.TreeNode}'s child
  15  * nodes from a specified URL. The response must be a javascript Array definition
  16  * who's elements are node definition objects. eg:
  17  * &lt;pre&gt;&lt;code&gt;
  18 {  success : true,
  19    data :      [
  20
  21     { 'id': 1, 'text': 'A folder Node', 'leaf': false },
  22     { 'id': 2, 'text': 'A leaf Node', 'leaf': true }
  23     ]
  24 }
  25
  26
  27 &lt;/code&gt;&lt;/pre&gt;
  28  * &lt;br&gt;&lt;br&gt;
  29  * The old style respose with just an array is still supported, but not recommended.
  30  * &lt;br&gt;&lt;br&gt;
  31  *
  32  * A server request is sent, and child nodes are loaded only when a node is expanded.
  33  * The loading node's id is passed to the server under the parameter name &quot;node&quot; to
  34  * enable the server to produce the correct child nodes.
  35  * &lt;br&gt;&lt;br&gt;
  36  * To pass extra parameters, an event handler may be attached to the &quot;beforeload&quot;
  37  * event, and the parameters specified in the TreeLoader's baseParams property:
  38  * &lt;pre&gt;&lt;code&gt;
  39     myTreeLoader.on(&quot;beforeload&quot;, function(treeLoader, node) {
  40         this.baseParams.category = node.attributes.category;
  41     }, this);
  42
  43 &lt;/code&gt;&lt;/pre&gt;
  44  *
  45  * This would pass an HTTP parameter called &quot;category&quot; to the server containing
  46  * the value of the Node's &quot;category&quot; attribute.
  47  * @constructor
  48  * Creates a new Treeloader.
  49  * @param {Object} config A config object containing config properties.
  50  */
  51 </span><span class="jsdoc-var">Roo.tree.TreeLoader </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">config</span><span class="jsdoc-syntax">){
  52     </span><span class="jsdoc-var">this.baseParams </span><span class="jsdoc-syntax">= {};
  53     </span><span class="jsdoc-var">this.requestMethod </span><span class="jsdoc-syntax">= </span><span class="jsdoc-string">&quot;POST&quot;</span><span class="jsdoc-syntax">;
  54     </span><span class="jsdoc-var">Roo.apply</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">config</span><span class="jsdoc-syntax">);
  55
  56     </span><span class="jsdoc-var">this.addEvents</span><span class="jsdoc-syntax">({
  57
  58         </span><span class="jsdoc-comment">/**
  59          * @event beforeload
  60          * Fires before a network request is made to retrieve the Json text which specifies a node's children.
  61          * @param {Object} This TreeLoader object.
  62          * @param {Object} node The {@link Roo.tree.TreeNode} object being loaded.
  63          * @param {Object} callback The callback function specified in the {@link #load} call.
  64          */
  65         </span><span class="jsdoc-var">beforeload </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
  66         </span><span class="jsdoc-comment">/**
  67          * @event load
  68          * Fires when the node has been successfuly loaded.
  69          * @param {Object} This TreeLoader object.
  70          * @param {Object} node The {@link Roo.tree.TreeNode} object being loaded.
  71          * @param {Object} response The response object containing the data from the server.
  72          */
  73         </span><span class="jsdoc-var">load </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
  74         </span><span class="jsdoc-comment">/**
  75          * @event loadexception
  76          * Fires if the network request failed.
  77          * @param {Object} This TreeLoader object.
  78          * @param {Object} node The {@link Roo.tree.TreeNode} object being loaded.
  79          * @param {Object} response The response object containing the data from the server.
  80          */
  81         </span><span class="jsdoc-var">loadexception </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
  82         </span><span class="jsdoc-comment">/**
  83          * @event create
  84          * Fires before a node is created, enabling you to return custom Node types
  85          * @param {Object} This TreeLoader object.
  86          * @param {Object} attr - the data returned from the AJAX call (modify it to suit)
  87          */
  88         </span><span class="jsdoc-var">create </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true
  89     </span><span class="jsdoc-syntax">});
  90
  91     </span><span class="jsdoc-var">Roo.tree.TreeLoader.superclass.constructor.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
  92 };
  93
  94 </span><span class="jsdoc-var">Roo.extend</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">Roo.tree.TreeLoader</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">Roo.util.Observable</span><span class="jsdoc-syntax">, {
  95     </span><span class="jsdoc-comment">/**
  96     * @cfg {String} dataUrl The URL from which to request a Json string which
  97     * specifies an array of node definition object representing the child nodes
  98     * to be loaded.
  99     */
 100     /**
 101     * @cfg {String} requestMethod either GET or POST
 102     * defaults to POST (due to BC)
 103     * to be loaded.
 104     */
 105     /**
 106     * @cfg {Object} baseParams (optional) An object containing properties which
 107     * specify HTTP parameters to be passed to each request for child nodes.
 108     */
 109     /**
 110     * @cfg {Object} baseAttrs (optional) An object containing attributes to be added to all nodes
 111     * created by this loader. If the attributes sent by the server have an attribute in this object,
 112     * they take priority.
 113     */
 114     /**
 115     * @cfg {Object} uiProviders (optional) An object containing properties which
 116     *
 117     * DEPRECATED - use 'create' event handler to modify attributes - which affect creation.
 118     * specify custom {@link Roo.tree.TreeNodeUI} implementations. If the optional
 119     * &lt;i&gt;uiProvider&lt;/i&gt; attribute of a returned child node is a string rather
 120     * than a reference to a TreeNodeUI implementation, this that string value
 121     * is used as a property name in the uiProviders object. You can define the provider named
 122     * 'default' , and this will be used for all nodes (if no uiProvider is delivered by the node data)
 123     */
 124     </span><span class="jsdoc-var">uiProviders </span><span class="jsdoc-syntax">: {},
 125
 126     </span><span class="jsdoc-comment">/**
 127     * @cfg {Boolean} clearOnLoad (optional) Default to true. Remove previously existing
 128     * child nodes before loading.
 129     */
 130     </span><span class="jsdoc-var">clearOnLoad </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
 131
 132     </span><span class="jsdoc-comment">/**
 133     * @cfg {String} root (optional) Default to false. Use this to read data from an object
 134     * property on loading, rather than expecting an array. (eg. more compatible to a standard
 135     * Grid query { data : [ .....] }
 136     */
 137
 138     </span><span class="jsdoc-var">root </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
 139      </span><span class="jsdoc-comment">/**
 140     * @cfg {String} queryParam (optional)
 141     * Name of the query as it will be passed on the querystring (defaults to 'node')
 142     * eg. the request will be ?node=[id]
 143     */
 144
 145
 146     </span><span class="jsdoc-var">queryParam</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
 147
 148     </span><span class="jsdoc-comment">/**
 149      * Load an {@link Roo.tree.TreeNode} from the URL specified in the constructor.
 150      * This is called automatically when a node is expanded, but may be used to reload
 151      * a node (or append new children if the {@link #clearOnLoad} option is false.)
 152      * @param {Roo.tree.TreeNode} node
 153      * @param {Function} callback
 154      */
 155     </span><span class="jsdoc-var">load </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">){
 156         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.clearOnLoad</span><span class="jsdoc-syntax">){
 157             </span><span class="jsdoc-keyword">while</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node.firstChild</span><span class="jsdoc-syntax">){
 158                 </span><span class="jsdoc-var">node.removeChild</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node.firstChild</span><span class="jsdoc-syntax">);
 159             }
 160         }
 161         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node.attributes.children</span><span class="jsdoc-syntax">){ </span><span class="jsdoc-comment">// preloaded json children
 162             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">cs </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">node.attributes.children</span><span class="jsdoc-syntax">;
 163             </span><span class="jsdoc-keyword">for</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0, </span><span class="jsdoc-var">len </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">cs.length</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">len</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">++){
 164                 </span><span class="jsdoc-var">node.appendChild</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.createNode</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">cs</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]));
 165             }
 166             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">callback </span><span class="jsdoc-syntax">== </span><span class="jsdoc-string">&quot;function&quot;</span><span class="jsdoc-syntax">){
 167                 </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">();
 168             }
 169         }</span><span class="jsdoc-keyword">else if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.dataUrl</span><span class="jsdoc-syntax">){
 170             </span><span class="jsdoc-var">this.requestData</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">);
 171         }
 172     },
 173
 174     </span><span class="jsdoc-var">getParams</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">){
 175         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">buf </span><span class="jsdoc-syntax">= [], </span><span class="jsdoc-var">bp </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.baseParams</span><span class="jsdoc-syntax">;
 176         </span><span class="jsdoc-keyword">for</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">key </span><span class="jsdoc-keyword">in </span><span class="jsdoc-var">bp</span><span class="jsdoc-syntax">){
 177             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">bp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">key</span><span class="jsdoc-syntax">] != </span><span class="jsdoc-string">&quot;function&quot;</span><span class="jsdoc-syntax">){
 178                 </span><span class="jsdoc-var">buf.push</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">encodeURIComponent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">key</span><span class="jsdoc-syntax">), </span><span class="jsdoc-string">&quot;=&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">encodeURIComponent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">bp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">key</span><span class="jsdoc-syntax">]), </span><span class="jsdoc-string">&quot;&amp;&quot;</span><span class="jsdoc-syntax">);
 179             }
 180         }
 181         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">n </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.queryParam </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-keyword">false </span><span class="jsdoc-syntax">? </span><span class="jsdoc-string">'node' </span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.queryParam</span><span class="jsdoc-syntax">;
 182         </span><span class="jsdoc-var">buf.push</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">n </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-string">&quot;=&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">encodeURIComponent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node.id</span><span class="jsdoc-syntax">));
 183         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">buf.join</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;&quot;</span><span class="jsdoc-syntax">);
 184     },
 185
 186     </span><span class="jsdoc-var">requestData </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">){
 187         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.fireEvent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;beforeload&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">) !== </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">){
 188             </span><span class="jsdoc-var">this.transId </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Roo.Ajax.request</span><span class="jsdoc-syntax">({
 189                 </span><span class="jsdoc-var">method</span><span class="jsdoc-syntax">:</span><span class="jsdoc-var">this.requestMethod</span><span class="jsdoc-syntax">,
 190                 </span><span class="jsdoc-var">url</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.dataUrl</span><span class="jsdoc-syntax">||</span><span class="jsdoc-var">this.url</span><span class="jsdoc-syntax">,
 191                 </span><span class="jsdoc-var">success</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.handleResponse</span><span class="jsdoc-syntax">,
 192                 </span><span class="jsdoc-var">failure</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.handleFailure</span><span class="jsdoc-syntax">,
 193                 </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">,
 194                 </span><span class="jsdoc-var">argument</span><span class="jsdoc-syntax">: {</span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">},
 195                 </span><span class="jsdoc-var">params</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.getParams</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">)
 196             });
 197         }</span><span class="jsdoc-keyword">else</span><span class="jsdoc-syntax">{
 198             </span><span class="jsdoc-comment">// if the load is cancelled, make sure we notify
 199             // the node that we are done
 200             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">callback </span><span class="jsdoc-syntax">== </span><span class="jsdoc-string">&quot;function&quot;</span><span class="jsdoc-syntax">){
 201                 </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">();
 202             }
 203         }
 204     },
 205
 206     </span><span class="jsdoc-var">isLoading </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
 207         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">this.transId </span><span class="jsdoc-syntax">? </span><span class="jsdoc-keyword">true </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 208     },
 209
 210     </span><span class="jsdoc-var">abort </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
 211         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.isLoading</span><span class="jsdoc-syntax">()){
 212             </span><span class="jsdoc-var">Roo.Ajax.abort</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.transId</span><span class="jsdoc-syntax">);
 213         }
 214     },
 215
 216     </span><span class="jsdoc-comment">// private
 217     </span><span class="jsdoc-var">createNode </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">)
 218     {
 219         </span><span class="jsdoc-comment">// apply baseAttrs, nice idea Corey!
 220         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.baseAttrs</span><span class="jsdoc-syntax">){
 221             </span><span class="jsdoc-var">Roo.applyIf</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.baseAttrs</span><span class="jsdoc-syntax">);
 222         }
 223         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.applyLoader </span><span class="jsdoc-syntax">!== </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">){
 224             </span><span class="jsdoc-var">attr.loader </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">;
 225         }
 226         </span><span class="jsdoc-comment">// uiProvider = depreciated..
 227
 228         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr.uiProvider</span><span class="jsdoc-syntax">) == </span><span class="jsdoc-string">'string'</span><span class="jsdoc-syntax">){
 229            </span><span class="jsdoc-var">attr.uiProvider </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.uiProviders</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">attr.uiProvider</span><span class="jsdoc-syntax">] ||
 230                 </span><span class="jsdoc-comment">/**  eval:var:attr */ </span><span class="jsdoc-keyword">eval</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr.uiProvider</span><span class="jsdoc-syntax">);
 231         }
 232         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.uiProviders</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'default'</span><span class="jsdoc-syntax">]) != </span><span class="jsdoc-string">'undefined'</span><span class="jsdoc-syntax">) {
 233             </span><span class="jsdoc-var">attr.uiProvider </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.uiProviders</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'default'</span><span class="jsdoc-syntax">];
 234         }
 235
 236         </span><span class="jsdoc-var">this.fireEvent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'create'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">);
 237
 238         </span><span class="jsdoc-var">attr.leaf  </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">typeof</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr.leaf</span><span class="jsdoc-syntax">) == </span><span class="jsdoc-string">'string' </span><span class="jsdoc-syntax">? </span><span class="jsdoc-var">attr.leaf </span><span class="jsdoc-syntax">* 1 : </span><span class="jsdoc-var">attr.leaf</span><span class="jsdoc-syntax">;
 239         </span><span class="jsdoc-keyword">return</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr.leaf </span><span class="jsdoc-syntax">?
 240                         </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Roo.tree.TreeNode</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">) :
 241                         </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Roo.tree.AsyncTreeNode</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">));
 242     },
 243
 244     </span><span class="jsdoc-var">processResponse </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">)
 245     {
 246         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">json </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">response.responseText</span><span class="jsdoc-syntax">;
 247         </span><span class="jsdoc-keyword">try </span><span class="jsdoc-syntax">{
 248
 249             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">o </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Roo.decode</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">json</span><span class="jsdoc-syntax">);
 250
 251             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.root </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-keyword">false </span><span class="jsdoc-syntax">&amp;&amp; </span><span class="jsdoc-keyword">typeof</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">o.success</span><span class="jsdoc-syntax">) != </span><span class="jsdoc-var">undefined</span><span class="jsdoc-syntax">) {
 252                 </span><span class="jsdoc-var">this.root </span><span class="jsdoc-syntax">= </span><span class="jsdoc-string">'data'</span><span class="jsdoc-syntax">; </span><span class="jsdoc-comment">// the default behaviour for list like data..
 253                 </span><span class="jsdoc-syntax">}
 254
 255             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.root </span><span class="jsdoc-syntax">!== </span><span class="jsdoc-keyword">false </span><span class="jsdoc-syntax">&amp;&amp;  !</span><span class="jsdoc-var">o.success</span><span class="jsdoc-syntax">) {
 256                 </span><span class="jsdoc-comment">// it's a failure condition.
 257                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">a </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">response.argument</span><span class="jsdoc-syntax">;
 258                 </span><span class="jsdoc-var">this.fireEvent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;loadexception&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">a.node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">);
 259                 </span><span class="jsdoc-var">Roo.log</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;Load failed - should have a handler really&quot;</span><span class="jsdoc-syntax">);
 260                 </span><span class="jsdoc-keyword">return</span><span class="jsdoc-syntax">;
 261             }
 262
 263
 264
 265             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.root </span><span class="jsdoc-syntax">!== </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">) {
 266                  </span><span class="jsdoc-var">o </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">o</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">this.root</span><span class="jsdoc-syntax">];
 267             }
 268
 269             </span><span class="jsdoc-keyword">for</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0, </span><span class="jsdoc-var">len </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">o.length</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">len</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">++){
 270                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">n </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.createNode</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">o</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]);
 271                 </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">n</span><span class="jsdoc-syntax">){
 272                     </span><span class="jsdoc-var">node.appendChild</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">n</span><span class="jsdoc-syntax">);
 273                 }
 274             }
 275             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">callback </span><span class="jsdoc-syntax">== </span><span class="jsdoc-string">&quot;function&quot;</span><span class="jsdoc-syntax">){
 276                 </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">node</span><span class="jsdoc-syntax">);
 277             }
 278         }</span><span class="jsdoc-keyword">catch</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">){
 279             </span><span class="jsdoc-var">this.handleFailure</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">);
 280         }
 281     },
 282
 283     </span><span class="jsdoc-var">handleResponse </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">){
 284         </span><span class="jsdoc-var">this.transId </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 285         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">a </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">response.argument</span><span class="jsdoc-syntax">;
 286         </span><span class="jsdoc-var">this.processResponse</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">a.node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">a.callback</span><span class="jsdoc-syntax">);
 287         </span><span class="jsdoc-var">this.fireEvent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;load&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">a.node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">);
 288     },
 289
 290     </span><span class="jsdoc-var">handleFailure </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">)
 291     {
 292         </span><span class="jsdoc-comment">// should handle failure better..
 293         </span><span class="jsdoc-var">this.transId </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 294         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">a </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">response.argument</span><span class="jsdoc-syntax">;
 295         </span><span class="jsdoc-var">this.fireEvent</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;loadexception&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">a.node</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">);
 296         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">a.callback </span><span class="jsdoc-syntax">== </span><span class="jsdoc-string">&quot;function&quot;</span><span class="jsdoc-syntax">){
 297             </span><span class="jsdoc-var">a.callback</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">a.node</span><span class="jsdoc-syntax">);
 298         }
 299     }
 300 });</span></code></body></html>