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1 <html><head><title>/home/alan/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 &lt;/code&gt;&lt;/pre&gt;&lt;
43  * This would pass an HTTP parameter called &quot;category&quot; to the server containing
44  * the value of the Node's &quot;category&quot; attribute.
45  * @constructor
46  * Creates a new Treeloader.
47  * @param {Object} config A config object containing config properties.
48  */
49 </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">){
50     </span><span class="jsdoc-var">this.baseParams </span><span class="jsdoc-syntax">= {};
51     </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">;
52     </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">);
53
54     </span><span class="jsdoc-var">this.addEvents</span><span class="jsdoc-syntax">({
55
56         </span><span class="jsdoc-comment">/**
57          * @event beforeload
58          * Fires before a network request is made to retrieve the Json text which specifies a node's children.
59          * @param {Object} This TreeLoader object.
60          * @param {Object} node The {@link Roo.tree.TreeNode} object being loaded.
61          * @param {Object} callback The callback function specified in the {@link #load} call.
62          */
63         </span><span class="jsdoc-var">beforeload </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
64         </span><span class="jsdoc-comment">/**
65          * @event load
66          * Fires when the node has been successfuly loaded.
67          * @param {Object} This TreeLoader object.
68          * @param {Object} node The {@link Roo.tree.TreeNode} object being loaded.
69          * @param {Object} response The response object containing the data from the server.
70          */
71         </span><span class="jsdoc-var">load </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
72         </span><span class="jsdoc-comment">/**
73          * @event loadexception
74          * Fires if the network request failed.
75          * @param {Object} This TreeLoader object.
76          * @param {Object} node The {@link Roo.tree.TreeNode} object being loaded.
77          * @param {Object} response The response object containing the data from the server.
78          */
79         </span><span class="jsdoc-var">loadexception </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
80         </span><span class="jsdoc-comment">/**
81          * @event create
82          * Fires before a node is created, enabling you to return custom Node types 
83          * @param {Object} This TreeLoader object.
84          * @param {Object} attr - the data returned from the AJAX call (modify it to suit)
85          */
86         </span><span class="jsdoc-var">create </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true
87     </span><span class="jsdoc-syntax">});
88
89     </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">);
90 };
91
92 </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">, {
93     </span><span class="jsdoc-comment">/**
94     * @cfg {String} dataUrl The URL from which to request a Json string which
95     * specifies an array of node definition object representing the child nodes
96     * to be loaded.
97     */
98     /**
99     * @cfg {String} requestMethod either GET or POST
100     * defaults to POST (due to BC)
101     * to be loaded.
102     */
103     /**
104     * @cfg {Object} baseParams (optional) An object containing properties which
105     * specify HTTP parameters to be passed to each request for child nodes.
106     */
107     /**
108     * @cfg {Object} baseAttrs (optional) An object containing attributes to be added to all nodes
109     * created by this loader. If the attributes sent by the server have an attribute in this object,
110     * they take priority.
111     */
112     /**
113     * @cfg {Object} uiProviders (optional) An object containing properties which
114     * 
115     * DEPRECATED - use 'create' event handler to modify attributes - which affect creation.
116     * specify custom {@link Roo.tree.TreeNodeUI} implementations. If the optional
117     * &lt;i&gt;uiProvider&lt;/i&gt; attribute of a returned child node is a string rather
118     * than a reference to a TreeNodeUI implementation, this that string value
119     * is used as a property name in the uiProviders object. You can define the provider named
120     * 'default' , and this will be used for all nodes (if no uiProvider is delivered by the node data)
121     */
122     </span><span class="jsdoc-var">uiProviders </span><span class="jsdoc-syntax">: {},
123
124     </span><span class="jsdoc-comment">/**
125     * @cfg {Boolean} clearOnLoad (optional) Default to true. Remove previously existing
126     * child nodes before loading.
127     */
128     </span><span class="jsdoc-var">clearOnLoad </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
129
130     </span><span class="jsdoc-comment">/**
131     * @cfg {String} root (optional) Default to false. Use this to read data from an object 
132     * property on loading, rather than expecting an array. (eg. more compatible to a standard
133     * Grid query { data : [ .....] }
134     */
135
136     </span><span class="jsdoc-var">root </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
137      </span><span class="jsdoc-comment">/**
138     * @cfg {String} queryParam (optional) 
139     * Name of the query as it will be passed on the querystring (defaults to 'node')
140     * eg. the request will be ?node=[id]
141     */
142
143
144     </span><span class="jsdoc-var">queryParam</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
145
146     </span><span class="jsdoc-comment">/**
147      * Load an {@link Roo.tree.TreeNode} from the URL specified in the constructor.
148      * This is called automatically when a node is expanded, but may be used to reload
149      * a node (or append new children if the {@link #clearOnLoad} option is false.)
150      * @param {Roo.tree.TreeNode} node
151      * @param {Function} callback
152      */
153     </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">){
154         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.clearOnLoad</span><span class="jsdoc-syntax">){
155             </span><span class="jsdoc-keyword">while</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node.firstChild</span><span class="jsdoc-syntax">){
156                 </span><span class="jsdoc-var">node.removeChild</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">node.firstChild</span><span class="jsdoc-syntax">);
157             }
158         }
159         </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
160             </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">;
161             </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">++){
162                 </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">]));
163             }
164             </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">){
165                 </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">();
166             }
167         }</span><span class="jsdoc-keyword">else if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.dataUrl</span><span class="jsdoc-syntax">){
168             </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">);
169         }
170     },
171
172     </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">){
173         </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">;
174         </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">){
175             </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">){
176                 </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">);
177             }
178         }
179         </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">;
180         </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">));
181         </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">);
182     },
183
184     </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">){
185         </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">){
186             </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">({
187                 </span><span class="jsdoc-var">method</span><span class="jsdoc-syntax">:</span><span class="jsdoc-var">this.requestMethod</span><span class="jsdoc-syntax">,
188                 </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">,
189                 </span><span class="jsdoc-var">success</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.handleResponse</span><span class="jsdoc-syntax">,
190                 </span><span class="jsdoc-var">failure</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.handleFailure</span><span class="jsdoc-syntax">,
191                 </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">,
192                 </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">},
193                 </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">)
194             });
195         }</span><span class="jsdoc-keyword">else</span><span class="jsdoc-syntax">{
196             </span><span class="jsdoc-comment">// if the load is cancelled, make sure we notify
197             // the node that we are done
198             </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">){
199                 </span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">();
200             }
201         }
202     },
203
204     </span><span class="jsdoc-var">isLoading </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
205         </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">;
206     },
207
208     </span><span class="jsdoc-var">abort </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
209         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.isLoading</span><span class="jsdoc-syntax">()){
210             </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">);
211         }
212     },
213
214     </span><span class="jsdoc-comment">// private
215     </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">)
216     {
217         </span><span class="jsdoc-comment">// apply baseAttrs, nice idea Corey!
218         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.baseAttrs</span><span class="jsdoc-syntax">){
219             </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">);
220         }
221         </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">){
222             </span><span class="jsdoc-var">attr.loader </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">;
223         }
224         </span><span class="jsdoc-comment">// uiProvider = depreciated..
225
226         </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">){
227            </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">] ||
228                 </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">);
229         }
230         </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">) {
231             </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">];
232         }
233
234         </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">);
235
236         </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">;
237         </span><span class="jsdoc-keyword">return</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr.leaf </span><span class="jsdoc-syntax">?
238                         </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">) :
239                         </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">));
240     },
241
242     </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">)
243     {
244         </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">;
245         </span><span class="jsdoc-keyword">try </span><span class="jsdoc-syntax">{
246
247             </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">);
248
249             </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">) {
250                 </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..
251                 </span><span class="jsdoc-syntax">}
252
253             </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">) {
254                 </span><span class="jsdoc-comment">// it's a failure condition.
255                 </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">;
256                 </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">);
257                 </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">);
258                 </span><span class="jsdoc-keyword">return</span><span class="jsdoc-syntax">;
259             }
260
261
262
263             </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">) {
264                  </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">];
265             }
266
267             </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">++){
268                 </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">]);
269                 </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">n</span><span class="jsdoc-syntax">){
270                     </span><span class="jsdoc-var">node.appendChild</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">n</span><span class="jsdoc-syntax">);
271                 }
272             }
273             </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">){
274                 </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">);
275             }
276         }</span><span class="jsdoc-keyword">catch</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">){
277             </span><span class="jsdoc-var">this.handleFailure</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">response</span><span class="jsdoc-syntax">);
278         }
279     },
280
281     </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">){
282         </span><span class="jsdoc-var">this.transId </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
283         </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">;
284         </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">);
285         </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">);
286     },
287
288     </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">)
289     {
290         </span><span class="jsdoc-comment">// should handle failure better..
291         </span><span class="jsdoc-var">this.transId </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
292         </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">;
293         </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">);
294         </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">){
295             </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">);
296         }
297     }
298 });</span></code></body></html>
RooJS - Version 1