-<html>\r
-<head>\r
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> \r
- <title>The source code</title>\r
- <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />\r
- <script type="text/javascript" src="../resources/prettify/prettify.js"></script>\r
-</head>\r
-<body onload="prettyPrint();">\r
- <pre class="prettyprint lang-js"><div id="cls-Ext.tree.TreeLoader"></div>/**\r
- * @class Ext.tree.TreeLoader\r
- * @extends Ext.util.Observable\r
- * A TreeLoader provides for lazy loading of an {@link Ext.tree.TreeNode}'s child\r
- * nodes from a specified URL. The response must be a JavaScript Array definition\r
- * whose elements are node definition objects. e.g.:\r
- * <pre><code>\r
- [{\r
- id: 1,\r
- text: 'A leaf Node',\r
- leaf: true\r
- },{\r
- id: 2,\r
- text: 'A folder Node',\r
- children: [{\r
- id: 3,\r
- text: 'A child Node',\r
- leaf: true\r
- }]\r
- }]\r
-</code></pre>\r
- * <br><br>\r
- * A server request is sent, and child nodes are loaded only when a node is expanded.\r
- * The loading node's id is passed to the server under the parameter name "node" to\r
- * enable the server to produce the correct child nodes.\r
- * <br><br>\r
- * To pass extra parameters, an event handler may be attached to the "beforeload"\r
- * event, and the parameters specified in the TreeLoader's baseParams property:\r
- * <pre><code>\r
- myTreeLoader.on("beforeload", function(treeLoader, node) {\r
- this.baseParams.category = node.attributes.category;\r
- }, this);\r
-</code></pre>\r
- * This would pass an HTTP parameter called "category" to the server containing\r
- * the value of the Node's "category" attribute.\r
- * @constructor\r
- * Creates a new Treeloader.\r
- * @param {Object} config A config object containing config properties.\r
- */\r
-Ext.tree.TreeLoader = function(config){\r
- this.baseParams = {};\r
- Ext.apply(this, config);\r
-\r
- this.addEvents(\r
- <div id="event-Ext.tree.TreeLoader-beforeload"></div>/**\r
- * @event beforeload\r
- * Fires before a network request is made to retrieve the Json text which specifies a node's children.\r
- * @param {Object} This TreeLoader object.\r
- * @param {Object} node The {@link Ext.tree.TreeNode} object being loaded.\r
- * @param {Object} callback The callback function specified in the {@link #load} call.\r
- */\r
- "beforeload",\r
- <div id="event-Ext.tree.TreeLoader-load"></div>/**\r
- * @event load\r
- * Fires when the node has been successfuly loaded.\r
- * @param {Object} This TreeLoader object.\r
- * @param {Object} node The {@link Ext.tree.TreeNode} object being loaded.\r
- * @param {Object} response The response object containing the data from the server.\r
- */\r
- "load",\r
- <div id="event-Ext.tree.TreeLoader-loadexception"></div>/**\r
- * @event loadexception\r
- * Fires if the network request failed.\r
- * @param {Object} This TreeLoader object.\r
- * @param {Object} node The {@link Ext.tree.TreeNode} object being loaded.\r
- * @param {Object} response The response object containing the data from the server.\r
- */\r
- "loadexception"\r
- );\r
- Ext.tree.TreeLoader.superclass.constructor.call(this);\r
- if(Ext.isString(this.paramOrder)){\r
- this.paramOrder = this.paramOrder.split(/[\s,|]/);\r
- }\r
-};\r
-\r
-Ext.extend(Ext.tree.TreeLoader, Ext.util.Observable, {\r
- <div id="cfg-Ext.tree.TreeLoader-dataUrl"></div>/**\r
- * @cfg {String} dataUrl The URL from which to request a Json string which\r
- * specifies an array of node definition objects representing the child nodes\r
- * to be loaded.\r
- */\r
- <div id="cfg-Ext.tree.TreeLoader-requestMethod"></div>/**\r
- * @cfg {String} requestMethod The HTTP request method for loading data (defaults to the value of {@link Ext.Ajax#method}).\r
- */\r
- <div id="cfg-Ext.tree.TreeLoader-url"></div>/**\r
- * @cfg {String} url Equivalent to {@link #dataUrl}.\r
- */\r
- <div id="cfg-Ext.tree.TreeLoader-preloadChildren"></div>/**\r
- * @cfg {Boolean} preloadChildren If set to true, the loader recursively loads "children" attributes when doing the first load on nodes.\r
- */\r
- <div id="cfg-Ext.tree.TreeLoader-baseParams"></div>/**\r
- * @cfg {Object} baseParams (optional) An object containing properties which\r
- * specify HTTP parameters to be passed to each request for child nodes.\r
- */\r
- <div id="cfg-Ext.tree.TreeLoader-baseAttrs"></div>/**\r
- * @cfg {Object} baseAttrs (optional) An object containing attributes to be added to all nodes\r
- * created by this loader. If the attributes sent by the server have an attribute in this object,\r
- * they take priority.\r
- */\r
- <div id="cfg-Ext.tree.TreeLoader-uiProviders"></div>/**\r
- * @cfg {Object} uiProviders (optional) An object containing properties which\r
- * specify custom {@link Ext.tree.TreeNodeUI} implementations. If the optional\r
- * <i>uiProvider</i> attribute of a returned child node is a string rather\r
- * than a reference to a TreeNodeUI implementation, then that string value\r
- * is used as a property name in the uiProviders object.\r
- */\r
- uiProviders : {},\r
-\r
- <div id="cfg-Ext.tree.TreeLoader-clearOnLoad"></div>/**\r
- * @cfg {Boolean} clearOnLoad (optional) Default to true. Remove previously existing\r
- * child nodes before loading.\r
- */\r
- clearOnLoad : true,\r
-\r
- <div id="cfg-Ext.tree.TreeLoader-paramOrder"></div>/**\r
- * @cfg {Array/String} paramOrder Defaults to <tt>undefined</tt>. Only used when using directFn.\r
- * Specifies the params in the order in which they must be passed to the server-side Direct method\r
- * as either (1) an Array of String values, or (2) a String of params delimited by either whitespace,\r
- * comma, or pipe. For example,\r
- * any of the following would be acceptable:<pre><code>\r
-nodeParameter: 'node',\r
-paramOrder: ['param1','param2','param3']\r
-paramOrder: 'node param1 param2 param3'\r
-paramOrder: 'param1,node,param2,param3'\r
-paramOrder: 'param1|param2|param|node'\r
- </code></pre>\r
- */\r
- paramOrder: undefined,\r
-\r
- <div id="cfg-Ext.tree.TreeLoader-paramsAsHash"></div>/**\r
- * @cfg {Boolean} paramsAsHash Only used when using directFn.\r
- * Send parameters as a collection of named arguments (defaults to <tt>false</tt>). Providing a\r
- * <tt>{@link #paramOrder}</tt> nullifies this configuration.\r
- */\r
- paramsAsHash: false,\r
-\r
- <div id="cfg-Ext.tree.TreeLoader-nodeParameter"></div>/**\r
- * @cfg {String} nodeParameter The name of the parameter sent to the server which contains\r
- * the identifier of the node. Defaults to <tt>'node'</tt>.\r
- */\r
- nodeParameter: 'node',\r
-\r
- <div id="cfg-Ext.tree.TreeLoader-directFn"></div>/**\r
- * @cfg {Function} directFn\r
- * Function to call when executing a request.\r
- */\r
- directFn : undefined,\r
-\r
- <div id="method-Ext.tree.TreeLoader-load"></div>/**\r
- * Load an {@link Ext.tree.TreeNode} from the URL specified in the constructor.\r
- * This is called automatically when a node is expanded, but may be used to reload\r
- * a node (or append new children if the {@link #clearOnLoad} option is false.)\r
- * @param {Ext.tree.TreeNode} node\r
- * @param {Function} callback Function to call after the node has been loaded. The\r
- * function is passed the TreeNode which was requested to be loaded.\r
- * @param (Object) scope The cope (<code>this</code> reference) in which the callback is executed.\r
- * defaults to the loaded TreeNode.\r
- */\r
- load : function(node, callback, scope){\r
- if(this.clearOnLoad){\r
- while(node.firstChild){\r
- node.removeChild(node.firstChild);\r
- }\r
- }\r
- if(this.doPreload(node)){ // preloaded json children\r
- this.runCallback(callback, scope || node, [node]);\r
- }else if(this.directFn || this.dataUrl || this.url){\r
- this.requestData(node, callback, scope || node);\r
- }\r
- },\r
-\r
- doPreload : function(node){\r
- if(node.attributes.children){\r
- if(node.childNodes.length < 1){ // preloaded?\r
- var cs = node.attributes.children;\r
- node.beginUpdate();\r
- for(var i = 0, len = cs.length; i < len; i++){\r
- var cn = node.appendChild(this.createNode(cs[i]));\r
- if(this.preloadChildren){\r
- this.doPreload(cn);\r
- }\r
- }\r
- node.endUpdate();\r
- }\r
- return true;\r
- }\r
- return false;\r
- },\r
-\r
- getParams: function(node){\r
- var bp = Ext.apply({}, this.baseParams),\r
- np = this.nodeParameter,\r
- po = this.paramOrder;\r
-\r
- np && (bp[ np ] = node.id);\r
-\r
- if(this.directFn){\r
- var buf = [node.id];\r
- if(po){\r
- // reset 'buf' if the nodeParameter was included in paramOrder\r
- if(np && po.indexOf(np) > -1){\r
- buf = [];\r
- }\r
-\r
- for(var i = 0, len = po.length; i < len; i++){\r
- buf.push(bp[ po[i] ]);\r
- }\r
- }else if(this.paramsAsHash){\r
- buf = [bp];\r
- }\r
- return buf;\r
- }else{\r
- return bp;\r
- }\r
- },\r
-\r
- requestData : function(node, callback, scope){\r
- if(this.fireEvent("beforeload", this, node, callback) !== false){\r
- if(this.directFn){\r
- var args = this.getParams(node);\r
- args.push(this.processDirectResponse.createDelegate(this, [{callback: callback, node: node, scope: scope}], true));\r
- this.directFn.apply(window, args);\r
- }else{\r
- this.transId = Ext.Ajax.request({\r
- method:this.requestMethod,\r
- url: this.dataUrl||this.url,\r
- success: this.handleResponse,\r
- failure: this.handleFailure,\r
- scope: this,\r
- argument: {callback: callback, node: node, scope: scope},\r
- params: this.getParams(node)\r
- });\r
- }\r
- }else{\r
- // if the load is cancelled, make sure we notify\r
- // the node that we are done\r
- this.runCallback(callback, scope || node, []);\r
- }\r
- },\r
-\r
- processDirectResponse: function(result, response, args){\r
- if(response.status){\r
- this.handleResponse({\r
- responseData: Ext.isArray(result) ? result : null,\r
- responseText: result,\r
- argument: args\r
- });\r
- }else{\r
- this.handleFailure({\r
- argument: args\r
- });\r
- }\r
- },\r
-\r
- // private\r
- runCallback: function(cb, scope, args){\r
- if(Ext.isFunction(cb)){\r
- cb.apply(scope, args);\r
- }\r
- },\r
-\r
- isLoading : function(){\r
- return !!this.transId;\r
- },\r
-\r
- abort : function(){\r
- if(this.isLoading()){\r
- Ext.Ajax.abort(this.transId);\r
- }\r
- },\r
-\r
- <div id="method-Ext.tree.TreeLoader-createNode"></div>/**\r
- * <p>Override this function for custom TreeNode node implementation, or to\r
- * modify the attributes at creation time.</p>\r
- * Example:<pre><code>\r
-new Ext.tree.TreePanel({\r
- ...\r
- loader: new Ext.tree.TreeLoader({\r
- url: 'dataUrl',\r
- createNode: function(attr) {\r
-// Allow consolidation consignments to have\r
-// consignments dropped into them.\r
- if (attr.isConsolidation) {\r
- attr.iconCls = 'x-consol',\r
- attr.allowDrop = true;\r
- }\r
- return Ext.tree.TreeLoader.prototype.createNode.call(this, attr);\r
- }\r
- }),\r
- ...\r
-});\r
-</code></pre>\r
- * @param attr {Object} The attributes from which to create the new node.\r
- */\r
- createNode : function(attr){\r
- // apply baseAttrs, nice idea Corey!\r
- if(this.baseAttrs){\r
- Ext.applyIf(attr, this.baseAttrs);\r
- }\r
- if(this.applyLoader !== false && !attr.loader){\r
- attr.loader = this;\r
- }\r
- if(Ext.isString(attr.uiProvider)){\r
- attr.uiProvider = this.uiProviders[attr.uiProvider] || eval(attr.uiProvider);\r
- }\r
- if(attr.nodeType){\r
- return new Ext.tree.TreePanel.nodeTypes[attr.nodeType](attr);\r
- }else{\r
- return attr.leaf ?\r
- new Ext.tree.TreeNode(attr) :\r
- new Ext.tree.AsyncTreeNode(attr);\r
- }\r
- },\r
-\r
- processResponse : function(response, node, callback, scope){\r
- var json = response.responseText;\r
- try {\r
- var o = response.responseData || Ext.decode(json);\r
- node.beginUpdate();\r
- for(var i = 0, len = o.length; i < len; i++){\r
- var n = this.createNode(o[i]);\r
- if(n){\r
- node.appendChild(n);\r
- }\r
- }\r
- node.endUpdate();\r
- this.runCallback(callback, scope || node, [node]);\r
- }catch(e){\r
- this.handleFailure(response);\r
- }\r
- },\r
-\r
- handleResponse : function(response){\r
- this.transId = false;\r
- var a = response.argument;\r
- this.processResponse(response, a.node, a.callback, a.scope);\r
- this.fireEvent("load", this, a.node, response);\r
- },\r
-\r
- handleFailure : function(response){\r
- this.transId = false;\r
- var a = response.argument;\r
- this.fireEvent("loadexception", this, a.node, response);\r
- this.runCallback(a.callback, a.scope || a.node, [a.node]);\r
- },\r
-\r
- destroy : function(){\r
- this.abort();\r
- this.purgeListeners();\r
- }\r
-});</pre> \r
-</body>\r
+<html>
+<head>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+ <title>The source code</title>
+ <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
+ <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
+</head>
+<body onload="prettyPrint();">
+ <pre class="prettyprint lang-js">/*!
+ * Ext JS Library 3.2.0
+ * Copyright(c) 2006-2010 Ext JS, Inc.
+ * licensing@extjs.com
+ * http://www.extjs.com/license
+ */
+<div id="cls-Ext.tree.TreeLoader"></div>/**
+ * @class Ext.tree.TreeLoader
+ * @extends Ext.util.Observable
+ * A TreeLoader provides for lazy loading of an {@link Ext.tree.TreeNode}'s child
+ * nodes from a specified URL. The response must be a JavaScript Array definition
+ * whose elements are node definition objects. e.g.:
+ * <pre><code>
+ [{
+ id: 1,
+ text: 'A leaf Node',
+ leaf: true
+ },{
+ id: 2,
+ text: 'A folder Node',
+ children: [{
+ id: 3,
+ text: 'A child Node',
+ leaf: true
+ }]
+ }]
+</code></pre>
+ * <br><br>
+ * A server request is sent, and child nodes are loaded only when a node is expanded.
+ * The loading node's id is passed to the server under the parameter name "node" to
+ * enable the server to produce the correct child nodes.
+ * <br><br>
+ * To pass extra parameters, an event handler may be attached to the "beforeload"
+ * event, and the parameters specified in the TreeLoader's baseParams property:
+ * <pre><code>
+ myTreeLoader.on("beforeload", function(treeLoader, node) {
+ this.baseParams.category = node.attributes.category;
+ }, this);
+</code></pre>
+ * This would pass an HTTP parameter called "category" to the server containing
+ * the value of the Node's "category" attribute.
+ * @constructor
+ * Creates a new Treeloader.
+ * @param {Object} config A config object containing config properties.
+ */
+Ext.tree.TreeLoader = function(config){
+ this.baseParams = {};
+ Ext.apply(this, config);
+
+ this.addEvents(
+ <div id="event-Ext.tree.TreeLoader-beforeload"></div>/**
+ * @event beforeload
+ * Fires before a network request is made to retrieve the Json text which specifies a node's children.
+ * @param {Object} This TreeLoader object.
+ * @param {Object} node The {@link Ext.tree.TreeNode} object being loaded.
+ * @param {Object} callback The callback function specified in the {@link #load} call.
+ */
+ "beforeload",
+ <div id="event-Ext.tree.TreeLoader-load"></div>/**
+ * @event load
+ * Fires when the node has been successfuly loaded.
+ * @param {Object} This TreeLoader object.
+ * @param {Object} node The {@link Ext.tree.TreeNode} object being loaded.
+ * @param {Object} response The response object containing the data from the server.
+ */
+ "load",
+ <div id="event-Ext.tree.TreeLoader-loadexception"></div>/**
+ * @event loadexception
+ * Fires if the network request failed.
+ * @param {Object} This TreeLoader object.
+ * @param {Object} node The {@link Ext.tree.TreeNode} object being loaded.
+ * @param {Object} response The response object containing the data from the server.
+ */
+ "loadexception"
+ );
+ Ext.tree.TreeLoader.superclass.constructor.call(this);
+ if(Ext.isString(this.paramOrder)){
+ this.paramOrder = this.paramOrder.split(/[\s,|]/);
+ }
+};
+
+Ext.extend(Ext.tree.TreeLoader, Ext.util.Observable, {
+ <div id="cfg-Ext.tree.TreeLoader-dataUrl"></div>/**
+ * @cfg {String} dataUrl The URL from which to request a Json string which
+ * specifies an array of node definition objects representing the child nodes
+ * to be loaded.
+ */
+ <div id="cfg-Ext.tree.TreeLoader-requestMethod"></div>/**
+ * @cfg {String} requestMethod The HTTP request method for loading data (defaults to the value of {@link Ext.Ajax#method}).
+ */
+ <div id="cfg-Ext.tree.TreeLoader-url"></div>/**
+ * @cfg {String} url Equivalent to {@link #dataUrl}.
+ */
+ <div id="cfg-Ext.tree.TreeLoader-preloadChildren"></div>/**
+ * @cfg {Boolean} preloadChildren If set to true, the loader recursively loads "children" attributes when doing the first load on nodes.
+ */
+ <div id="cfg-Ext.tree.TreeLoader-baseParams"></div>/**
+ * @cfg {Object} baseParams (optional) An object containing properties which
+ * specify HTTP parameters to be passed to each request for child nodes.
+ */
+ <div id="cfg-Ext.tree.TreeLoader-baseAttrs"></div>/**
+ * @cfg {Object} baseAttrs (optional) An object containing attributes to be added to all nodes
+ * created by this loader. If the attributes sent by the server have an attribute in this object,
+ * they take priority.
+ */
+ <div id="cfg-Ext.tree.TreeLoader-uiProviders"></div>/**
+ * @cfg {Object} uiProviders (optional) An object containing properties which
+ * specify custom {@link Ext.tree.TreeNodeUI} implementations. If the optional
+ * <i>uiProvider</i> attribute of a returned child node is a string rather
+ * than a reference to a TreeNodeUI implementation, then that string value
+ * is used as a property name in the uiProviders object.
+ */
+ uiProviders : {},
+
+ <div id="cfg-Ext.tree.TreeLoader-clearOnLoad"></div>/**
+ * @cfg {Boolean} clearOnLoad (optional) Default to true. Remove previously existing
+ * child nodes before loading.
+ */
+ clearOnLoad : true,
+
+ <div id="cfg-Ext.tree.TreeLoader-paramOrder"></div>/**
+ * @cfg {Array/String} paramOrder Defaults to <tt>undefined</tt>. Only used when using directFn.
+ * Specifies the params in the order in which they must be passed to the server-side Direct method
+ * as either (1) an Array of String values, or (2) a String of params delimited by either whitespace,
+ * comma, or pipe. For example,
+ * any of the following would be acceptable:<pre><code>
+nodeParameter: 'node',
+paramOrder: ['param1','param2','param3']
+paramOrder: 'node param1 param2 param3'
+paramOrder: 'param1,node,param2,param3'
+paramOrder: 'param1|param2|param|node'
+ </code></pre>
+ */
+ paramOrder: undefined,
+
+ <div id="cfg-Ext.tree.TreeLoader-paramsAsHash"></div>/**
+ * @cfg {Boolean} paramsAsHash Only used when using directFn.
+ * Send parameters as a collection of named arguments (defaults to <tt>false</tt>). Providing a
+ * <tt>{@link #paramOrder}</tt> nullifies this configuration.
+ */
+ paramsAsHash: false,
+
+ <div id="cfg-Ext.tree.TreeLoader-nodeParameter"></div>/**
+ * @cfg {String} nodeParameter The name of the parameter sent to the server which contains
+ * the identifier of the node. Defaults to <tt>'node'</tt>.
+ */
+ nodeParameter: 'node',
+
+ <div id="cfg-Ext.tree.TreeLoader-directFn"></div>/**
+ * @cfg {Function} directFn
+ * Function to call when executing a request.
+ */
+ directFn : undefined,
+
+ <div id="method-Ext.tree.TreeLoader-load"></div>/**
+ * Load an {@link Ext.tree.TreeNode} from the URL specified in the constructor.
+ * This is called automatically when a node is expanded, but may be used to reload
+ * a node (or append new children if the {@link #clearOnLoad} option is false.)
+ * @param {Ext.tree.TreeNode} node
+ * @param {Function} callback Function to call after the node has been loaded. The
+ * function is passed the TreeNode which was requested to be loaded.
+ * @param {Object} scope The scope (<code>this</code> reference) in which the callback is executed.
+ * defaults to the loaded TreeNode.
+ */
+ load : function(node, callback, scope){
+ if(this.clearOnLoad){
+ while(node.firstChild){
+ node.removeChild(node.firstChild);
+ }
+ }
+ if(this.doPreload(node)){ // preloaded json children
+ this.runCallback(callback, scope || node, [node]);
+ }else if(this.directFn || this.dataUrl || this.url){
+ this.requestData(node, callback, scope || node);
+ }
+ },
+
+ doPreload : function(node){
+ if(node.attributes.children){
+ if(node.childNodes.length < 1){ // preloaded?
+ var cs = node.attributes.children;
+ node.beginUpdate();
+ for(var i = 0, len = cs.length; i < len; i++){
+ var cn = node.appendChild(this.createNode(cs[i]));
+ if(this.preloadChildren){
+ this.doPreload(cn);
+ }
+ }
+ node.endUpdate();
+ }
+ return true;
+ }
+ return false;
+ },
+
+ getParams: function(node){
+ var bp = Ext.apply({}, this.baseParams),
+ np = this.nodeParameter,
+ po = this.paramOrder;
+
+ np && (bp[ np ] = node.id);
+
+ if(this.directFn){
+ var buf = [node.id];
+ if(po){
+ // reset 'buf' if the nodeParameter was included in paramOrder
+ if(np && po.indexOf(np) > -1){
+ buf = [];
+ }
+
+ for(var i = 0, len = po.length; i < len; i++){
+ buf.push(bp[ po[i] ]);
+ }
+ }else if(this.paramsAsHash){
+ buf = [bp];
+ }
+ return buf;
+ }else{
+ return bp;
+ }
+ },
+
+ requestData : function(node, callback, scope){
+ if(this.fireEvent("beforeload", this, node, callback) !== false){
+ if(this.directFn){
+ var args = this.getParams(node);
+ args.push(this.processDirectResponse.createDelegate(this, [{callback: callback, node: node, scope: scope}], true));
+ this.directFn.apply(window, args);
+ }else{
+ this.transId = Ext.Ajax.request({
+ method:this.requestMethod,
+ url: this.dataUrl||this.url,
+ success: this.handleResponse,
+ failure: this.handleFailure,
+ scope: this,
+ argument: {callback: callback, node: node, scope: scope},
+ params: this.getParams(node)
+ });
+ }
+ }else{
+ // if the load is cancelled, make sure we notify
+ // the node that we are done
+ this.runCallback(callback, scope || node, []);
+ }
+ },
+
+ processDirectResponse: function(result, response, args){
+ if(response.status){
+ this.handleResponse({
+ responseData: Ext.isArray(result) ? result : null,
+ responseText: result,
+ argument: args
+ });
+ }else{
+ this.handleFailure({
+ argument: args
+ });
+ }
+ },
+
+ // private
+ runCallback: function(cb, scope, args){
+ if(Ext.isFunction(cb)){
+ cb.apply(scope, args);
+ }
+ },
+
+ isLoading : function(){
+ return !!this.transId;
+ },
+
+ abort : function(){
+ if(this.isLoading()){
+ Ext.Ajax.abort(this.transId);
+ }
+ },
+
+ <div id="method-Ext.tree.TreeLoader-createNode"></div>/**
+ * <p>Override this function for custom TreeNode node implementation, or to
+ * modify the attributes at creation time.</p>
+ * Example:<pre><code>
+new Ext.tree.TreePanel({
+ ...
+ loader: new Ext.tree.TreeLoader({
+ url: 'dataUrl',
+ createNode: function(attr) {
+// Allow consolidation consignments to have
+// consignments dropped into them.
+ if (attr.isConsolidation) {
+ attr.iconCls = 'x-consol',
+ attr.allowDrop = true;
+ }
+ return Ext.tree.TreeLoader.prototype.createNode.call(this, attr);
+ }
+ }),
+ ...
+});
+</code></pre>
+ * @param attr {Object} The attributes from which to create the new node.
+ */
+ createNode : function(attr){
+ // apply baseAttrs, nice idea Corey!
+ if(this.baseAttrs){
+ Ext.applyIf(attr, this.baseAttrs);
+ }
+ if(this.applyLoader !== false && !attr.loader){
+ attr.loader = this;
+ }
+ if(Ext.isString(attr.uiProvider)){
+ attr.uiProvider = this.uiProviders[attr.uiProvider] || eval(attr.uiProvider);
+ }
+ if(attr.nodeType){
+ return new Ext.tree.TreePanel.nodeTypes[attr.nodeType](attr);
+ }else{
+ return attr.leaf ?
+ new Ext.tree.TreeNode(attr) :
+ new Ext.tree.AsyncTreeNode(attr);
+ }
+ },
+
+ processResponse : function(response, node, callback, scope){
+ var json = response.responseText;
+ try {
+ var o = response.responseData || Ext.decode(json);
+ node.beginUpdate();
+ for(var i = 0, len = o.length; i < len; i++){
+ var n = this.createNode(o[i]);
+ if(n){
+ node.appendChild(n);
+ }
+ }
+ node.endUpdate();
+ this.runCallback(callback, scope || node, [node]);
+ }catch(e){
+ this.handleFailure(response);
+ }
+ },
+
+ handleResponse : function(response){
+ this.transId = false;
+ var a = response.argument;
+ this.processResponse(response, a.node, a.callback, a.scope);
+ this.fireEvent("load", this, a.node, response);
+ },
+
+ handleFailure : function(response){
+ this.transId = false;
+ var a = response.argument;
+ this.fireEvent("loadexception", this, a.node, response);
+ this.runCallback(a.callback, a.scope || a.node, [a.node]);
+ },
+
+ destroy : function(){
+ this.abort();
+ this.purgeListeners();
+ }
+});</pre>
+</body>
</html>
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git.ithinksw.org / extjs.git / blobdiff