[flexcoders] Moving Nodes across Trees (with in the tree is works fine)

[sk_acura]

Hi All,

   I am trying to have the drag and drop feature acoross two trees in 
my app. (the two trees are called source Tree and traget Tree). 

   Here i am posting the code below ( i got this from one of the post 
in this forum and added a second tree..)

   I can move the items with in the tree without any problems..How 
ever i cannot move items from one tree to another..!!

[CODE]

 <?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; 
creationComplete="init()"
 width="100%" height="100%" layout="absolute"  
backgroundColor="white">
    <mx:Script>
      <![CDATA[
        import test.Collections;
        import mx.managers.CursorManager;
        import mx.collections.ItemResponder;
        import mx.rpc.AsyncToken;
        import mx.rpc.remoting.RemoteObject;
         import test.Node;
         import test.CollectionBrowserNode;
         import mx.controls.List;
         import mx.core.DragSource;
         import mx.managers.DragManager;
         import mx.events.*;
         import mx.rpc.events.ResultEvent;
         import mx.controls.Alert;
         import mx.collections.ArrayCollection;
         import mx.utils.ObjectUtil;

         private var sourceArrayCollection:ArrayCollection = null;

         private var targetArrayCollection:ArrayCollection = null;

         public function init():void{
                           trace("Here in init() of 
RearrangeCollection ");
               sourceArrayCollection = new ArrayCollection();
               targetArrayCollection = new ArrayCollection();

               var collectionList:ArrayCollection = new 
ArrayCollection();
               populateChildNodes("Source 
Tree",sourceArrayCollection);
               populateChildNodes("Target 
Tree",targetArrayCollection);
               sourceCollectionTree.dataProvider = 
sourceArrayCollection;
               targetCollectionTree.dataProvider = 
targetArrayCollection;

         }

         private function populateChildNodes
(nodeNamePrefix:String,collection:ArrayCollection):void{
                 for(var  i:int =0;i<5;i++){
                var node:CollectionBrowserNode = new 
CollectionBrowserNode();
                node.nodeId =nodeNamePrefix+"-Id["+i+"]";
                node.nodeLabel =nodeNamePrefix+"-Label["+i+"]";
                node.children = new ArrayCollection();

                var childNode:CollectionBrowserNode = new 
CollectionBrowserNode();
                childNode.nodeId =nodeNamePrefix+"child-Id["+i+"]";
                childNode.nodeLabel =nodeNamePrefix+"Child Label
["+i+"]";

                node.children.addItem(childNode);

                collection.addItem(node);
               }
         }
                    //event for tree Click
            private function treeClickHandler(evt:MouseEvent):void{
                var id:String       = 
[EMAIL PROTECTED];
                var treeType:String = 
[EMAIL PROTECTED];
                Alert.show("Here in click Handler");
            }

            public function treeLabel( item:Object ) : String{
                                 //trace("Here in treeLabel");
                                 var node:CollectionBrowserNode = 
null;
                                 node = CollectionBrowserNode(item);
                                 //trace(" Here in treeLabel and Node 
="+node.className);
                                 return node.nodeLabel;
                }

                private function itemSelected():void{
                        trace("Here in itemSelected..");
                }

                private function onDragDrop(event : DragEvent) : void 
{
                        var draggedItems : Array =
(event.dragSource.dataForFormat("treeItems") as Array);
                        for each (var draggedItem : 
CollectionBrowserNode in draggedItems) {
                                var parentTarget : 
CollectionBrowserNode = (Tree (event.currentTarget)).getParentItem
(draggedItem);
                                trace ("onDragDrop", 
draggedItems.length);
                        }
                }

                private function onDragComplete(event : DragEvent) : 
void {
                        event.preventDefault();
                        var draggedItems : Array =
(event.dragSource.dataForFormat("treeItems") as Array);
                        for each (var draggedItem : 
CollectionBrowserNode in draggedItems) {
                                var parentTarget : 
CollectionBrowserNode = (Tree (event.currentTarget)).getParentItem
(draggedItem);
                                trace ("onDragComplete", 
draggedItems.length);
                        }
                }

                ]]>
    </mx:Script>

  <mx:HDividedBox width="100%" height="100%">

                <mx:VBox verticalAlign="top"                    
                 height="100%" width="100%">
                          <mx:Tree id="sourceCollectionTree"
                             labelFunction="treeLabel"
                                 showRoot="true"
                                 width="100%" height="100%"
                                 dragEnabled="true"
                                 dropEnabled="true"

                             dragDrop="onDragDrop(event)"
                                 dragComplete="onDragComplete(event)"

                          />
                </mx:VBox>
                <mx:VBox verticalAlign="top"                    
                 height="100%" width="100%">
                                  <mx:Tree id="targetCollectionTree"
                                     labelFunction="treeLabel"
                                         showRoot="true"
                                         width="100%" height="100%"
                                         dragEnabled="true"
                                 dropEnabled="true"

                             dragDrop="onDragDrop(event)"
                                 dragComplete="onDragComplete(event)"
                                  />
                </mx:VBox>
</mx:HDividedBox>
</mx:Application>



[/CODE]


CollectionBrowserNode.as

[CODE]

package test
{


        public class CollectionBrowserNode extends Node
        {
                public function CollectionBrowserNode()
                {
                        super();
                }

                public function setNode(node:Node):void{
                        if(node!=null){
                                this.childElements = 
node.childElements;
                                this.children = node.children;
                                this.leaf = node.leaf;
                                this.nodeId = node.nodeId;
                                this.nodeLabel = node.nodeLabel;
                                this.parent = node.parent;
                                this.root = node.root;
                        }
                }

                public var  dateCreated:String;
                public var  propertyHolderMap:Object;

                public override function toString():String{
                        return "CollectionBrowserNode[ 
nodeId="+nodeId+", nodeLabel="+nodeLabel+"]";
                }

        }
}
[/CODE]

Node.as

[CODE]
  package test
{
        import mx.collections.ArrayCollection;

        public class Node
        {

                public var description:String;

                public var  nodeId:String;
                public var  nodeLabel:String;

                public var  className:String;
                public var  root:Boolean;
                public var  leaf:Boolean;
                public var  container:Boolean;
                public var  childElements:ArrayCollection;
                public var  children:ArrayCollection;
                public var  parent:Node;

                public function toString():String{
                        return "Node[ nodeId="+nodeId+", 
nodeLabel="+nodeLabel+"]";
                }

        }
}
[/CODE]

 setting the dragMoveEnabled has no effect.


Thanks
Mars..