--- /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.dd.Registry"></div>/**\r
+ * @class Ext.dd.Registry\r
+ * Provides easy access to all drag drop components that are registered on a page. Items can be retrieved either\r
+ * directly by DOM node id, or by passing in the drag drop event that occurred and looking up the event target.\r
+ * @singleton\r
+ */\r
+Ext.dd.Registry = function(){\r
+ var elements = {}; \r
+ var handles = {}; \r
+ var autoIdSeed = 0;\r
+\r
+ var getId = function(el, autogen){\r
+ if(typeof el == "string"){\r
+ return el;\r
+ }\r
+ var id = el.id;\r
+ if(!id && autogen !== false){\r
+ id = "extdd-" + (++autoIdSeed);\r
+ el.id = id;\r
+ }\r
+ return id;\r
+ };\r
+ \r
+ return {\r
+ <div id="method-Ext.dd.Registry-register"></div>/**\r
+ * Resgister a drag drop element\r
+ * @param {String/HTMLElement) element The id or DOM node to register\r
+ * @param {Object} data (optional) An custom data object that will be passed between the elements that are involved\r
+ * in drag drop operations. You can populate this object with any arbitrary properties that your own code\r
+ * knows how to interpret, plus there are some specific properties known to the Registry that should be\r
+ * populated in the data object (if applicable):\r
+ * <pre>\r
+Value Description<br />\r
+--------- ------------------------------------------<br />\r
+handles Array of DOM nodes that trigger dragging<br />\r
+ for the element being registered<br />\r
+isHandle True if the element passed in triggers<br />\r
+ dragging itself, else false\r
+</pre>\r
+ */\r
+ register : function(el, data){\r
+ data = data || {};\r
+ if(typeof el == "string"){\r
+ el = document.getElementById(el);\r
+ }\r
+ data.ddel = el;\r
+ elements[getId(el)] = data;\r
+ if(data.isHandle !== false){\r
+ handles[data.ddel.id] = data;\r
+ }\r
+ if(data.handles){\r
+ var hs = data.handles;\r
+ for(var i = 0, len = hs.length; i < len; i++){\r
+ handles[getId(hs[i])] = data;\r
+ }\r
+ }\r
+ },\r
+\r
+ <div id="method-Ext.dd.Registry-unregister"></div>/**\r
+ * Unregister a drag drop element\r
+ * @param {String/HTMLElement) element The id or DOM node to unregister\r
+ */\r
+ unregister : function(el){\r
+ var id = getId(el, false);\r
+ var data = elements[id];\r
+ if(data){\r
+ delete elements[id];\r
+ if(data.handles){\r
+ var hs = data.handles;\r
+ for(var i = 0, len = hs.length; i < len; i++){\r
+ delete handles[getId(hs[i], false)];\r
+ }\r
+ }\r
+ }\r
+ },\r
+\r
+ <div id="method-Ext.dd.Registry-getHandle"></div>/**\r
+ * Returns the handle registered for a DOM Node by id\r
+ * @param {String/HTMLElement} id The DOM node or id to look up\r
+ * @return {Object} handle The custom handle data\r
+ */\r
+ getHandle : function(id){\r
+ if(typeof id != "string"){ // must be element?\r
+ id = id.id;\r
+ }\r
+ return handles[id];\r
+ },\r
+\r
+ <div id="method-Ext.dd.Registry-getHandleFromEvent"></div>/**\r
+ * Returns the handle that is registered for the DOM node that is the target of the event\r
+ * @param {Event} e The event\r
+ * @return {Object} handle The custom handle data\r
+ */\r
+ getHandleFromEvent : function(e){\r
+ var t = Ext.lib.Event.getTarget(e);\r
+ return t ? handles[t.id] : null;\r
+ },\r
+\r
+ <div id="method-Ext.dd.Registry-getTarget"></div>/**\r
+ * Returns a custom data object that is registered for a DOM node by id\r
+ * @param {String/HTMLElement} id The DOM node or id to look up\r
+ * @return {Object} data The custom data\r
+ */\r
+ getTarget : function(id){\r
+ if(typeof id != "string"){ // must be element?\r
+ id = id.id;\r
+ }\r
+ return elements[id];\r
+ },\r
+\r
+ <div id="method-Ext.dd.Registry-getTargetFromEvent"></div>/**\r
+ * Returns a custom data object that is registered for the DOM node that is the target of the event\r
+ * @param {Event} e The event\r
+ * @return {Object} data The custom data\r
+ */\r
+ getTargetFromEvent : function(e){\r
+ var t = Ext.lib.Event.getTarget(e);\r
+ return t ? elements[t.id] || handles[t.id] : null;\r
+ }\r
+ };\r
+}();</pre> \r
+</body>\r
+</html>
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