--- /dev/null
+<html>\r
+<head>\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.AsyncTreeNode"></div>/**\r
+ * @class Ext.tree.AsyncTreeNode\r
+ * @extends Ext.tree.TreeNode\r
+ * @cfg {TreeLoader} loader A TreeLoader to be used by this node (defaults to the loader defined on the tree)\r
+ * @constructor\r
+ * @param {Object/String} attributes The attributes/config for the node or just a string with the text for the node \r
+ */\r
+ Ext.tree.AsyncTreeNode = function(config){\r
+ this.loaded = config && config.loaded === true;\r
+ this.loading = false;\r
+ Ext.tree.AsyncTreeNode.superclass.constructor.apply(this, arguments);\r
+ /**\r
+ * @event beforeload\r
+ * Fires before this node is loaded, return false to cancel\r
+ * @param {Node} this This node\r
+ */\r
+ this.addEvents('beforeload', 'load');\r
+ /**\r
+ * @event load\r
+ * Fires when this node is loaded\r
+ * @param {Node} this This node\r
+ */\r
+ /**\r
+ * The loader used by this node (defaults to using the tree's defined loader)\r
+ * @type TreeLoader\r
+ * @property loader\r
+ */\r
+};\r
+Ext.extend(Ext.tree.AsyncTreeNode, Ext.tree.TreeNode, {\r
+ expand : function(deep, anim, callback, scope){\r
+ if(this.loading){ // if an async load is already running, waiting til it's done\r
+ var timer;\r
+ var f = function(){\r
+ if(!this.loading){ // done loading\r
+ clearInterval(timer);\r
+ this.expand(deep, anim, callback, scope);\r
+ }\r
+ }.createDelegate(this);\r
+ timer = setInterval(f, 200);\r
+ return;\r
+ }\r
+ if(!this.loaded){\r
+ if(this.fireEvent("beforeload", this) === false){\r
+ return;\r
+ }\r
+ this.loading = true;\r
+ this.ui.beforeLoad(this);\r
+ var loader = this.loader || this.attributes.loader || this.getOwnerTree().getLoader();\r
+ if(loader){\r
+ loader.load(this, this.loadComplete.createDelegate(this, [deep, anim, callback, scope]), this);\r
+ return;\r
+ }\r
+ }\r
+ Ext.tree.AsyncTreeNode.superclass.expand.call(this, deep, anim, callback, scope);\r
+ },\r
+ \r
+ /**\r
+ * Returns true if this node is currently loading\r
+ * @return {Boolean}\r
+ */\r
+ isLoading : function(){\r
+ return this.loading; \r
+ },\r
+ \r
+ loadComplete : function(deep, anim, callback, scope){\r
+ this.loading = false;\r
+ this.loaded = true;\r
+ this.ui.afterLoad(this);\r
+ this.fireEvent("load", this);\r
+ this.expand(deep, anim, callback, scope);\r
+ },\r
+ \r
+ /**\r
+ * Returns true if this node has been loaded\r
+ * @return {Boolean}\r
+ */\r
+ isLoaded : function(){\r
+ return this.loaded;\r
+ },\r
+ \r
+ hasChildNodes : function(){\r
+ if(!this.isLeaf() && !this.loaded){\r
+ return true;\r
+ }else{\r
+ return Ext.tree.AsyncTreeNode.superclass.hasChildNodes.call(this);\r
+ }\r
+ },\r
+\r
+ /**\r
+ * Trigger a reload for this node\r
+ * @param {Function} callback\r
+ * @param {Object} scope (optional) The scope in which to execute the callback.\r
+ */\r
+ reload : function(callback, scope){\r
+ this.collapse(false, false);\r
+ while(this.firstChild){\r
+ this.removeChild(this.firstChild).destroy();\r
+ }\r
+ this.childrenRendered = false;\r
+ this.loaded = false;\r
+ if(this.isHiddenRoot()){\r
+ this.expanded = false;\r
+ }\r
+ this.expand(false, false, callback, scope);\r
+ }\r
+});\r
+\r
+Ext.tree.TreePanel.nodeTypes.async = Ext.tree.AsyncTreeNode;</pre> \r
+</body>\r
+</html>
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git.ithinksw.org / extjs.git / blobdiff