| /* |
| Copyright (c) 2004-2006, The Dojo Foundation |
| All Rights Reserved. |
| |
| Licensed under the Academic Free License version 2.1 or above OR the |
| modified BSD license. For more information on Dojo licensing, see: |
| |
| http://dojotoolkit.org/community/licensing.shtml |
| */ |
| |
| |
| |
| dojo.provide("dojo.widget.TreeDndControllerV3"); |
| dojo.require("dojo.dnd.TreeDragAndDropV3"); |
| dojo.require("dojo.experimental"); |
| dojo.experimental("Tree drag'n'drop' has lots of problems/bugs, it requires dojo drag'n'drop overhaul to work, probably in 0.5"); |
| dojo.widget.defineWidget("dojo.widget.TreeDndControllerV3", [dojo.widget.HtmlWidget, dojo.widget.TreeCommon], function () { |
| this.dragSources = {}; |
| this.dropTargets = {}; |
| this.listenedTrees = {}; |
| }, {listenTreeEvents:["afterChangeTree", "beforeTreeDestroy", "afterAddChild"], listenNodeFilter:function (elem) { |
| return elem instanceof dojo.widget.Widget; |
| }, initialize:function (args) { |
| this.treeController = dojo.lang.isString(args.controller) ? dojo.widget.byId(args.controller) : args.controller; |
| if (!this.treeController) { |
| dojo.raise("treeController must be declared"); |
| } |
| }, onBeforeTreeDestroy:function (message) { |
| this.unlistenTree(message.source); |
| }, onAfterAddChild:function (message) { |
| this.listenNode(message.child); |
| }, onAfterChangeTree:function (message) { |
| if (!message.oldTree) { |
| return; |
| } |
| if (!message.newTree || !this.listenedTrees[message.newTree.widgetId]) { |
| this.processDescendants(message.node, this.listenNodeFilter, this.unlistenNode); |
| } |
| if (!this.listenedTrees[message.oldTree.widgetId]) { |
| this.processDescendants(message.node, this.listenNodeFilter, this.listenNode); |
| } |
| }, listenNode:function (node) { |
| if (!node.tree.DndMode) { |
| return; |
| } |
| if (this.dragSources[node.widgetId] || this.dropTargets[node.widgetId]) { |
| return; |
| } |
| var source = null; |
| var target = null; |
| if (!node.actionIsDisabled(node.actions.MOVE)) { |
| var source = this.makeDragSource(node); |
| this.dragSources[node.widgetId] = source; |
| } |
| var target = this.makeDropTarget(node); |
| this.dropTargets[node.widgetId] = target; |
| }, makeDragSource:function (node) { |
| return new dojo.dnd.TreeDragSourceV3(node.contentNode, this, node.tree.widgetId, node); |
| }, makeDropTarget:function (node) { |
| return new dojo.dnd.TreeDropTargetV3(node.contentNode, this.treeController, node.tree.DndAcceptTypes, node); |
| }, unlistenNode:function (node) { |
| if (this.dragSources[node.widgetId]) { |
| dojo.dnd.dragManager.unregisterDragSource(this.dragSources[node.widgetId]); |
| delete this.dragSources[node.widgetId]; |
| } |
| if (this.dropTargets[node.widgetId]) { |
| dojo.dnd.dragManager.unregisterDropTarget(this.dropTargets[node.widgetId]); |
| delete this.dropTargets[node.widgetId]; |
| } |
| }}); |
| |