[flexcoders] selectedItem problems with Tree Control

Rob Seward Thu, 21 Sep 2006 13:14:45 -0700

Hi there, I'm somewhat new at this. I'm trying to add a leaf to a tree control and have the new node automatically selected. My code works the first few times, but then it starts to select strange locations. Any ideas why?

You can try it here

Thanks!!

Rob

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml "
layout="absolute" xmlns:ns1="html-template.*" xmlns:ns2="components.*" >

<mx:Script>
        <![CDATA[
        import mx.logging.AbstractTarget;
            import flash.events.*;
            import mx.events.*;
            import mx.controls.*;
      import flash.net.URLLoader;
      import flash.net.URLLoaderDataFormat;
      import flash.net.URLRequest ;

private var directory;

   private function treeComplete(event:Event):void {

   }

            private function changeEvt(event:Event):void {

               if ( [EMAIL PROTECTED] == true) {
                    directory = Tree(event.target).selectedItem;
                }
               else if ( [EMAIL PROTECTED] == false){
                 directory = Tree(event.target).selectedItem.parent();
               }
            }

   /**** New File Button Handler *****/
   private function newFile():void {

    //create file
    var new_file:Object = directory.appendChild(<Pfolder label="New File" isBranch="false"/>);
    if([EMAIL PROTECTED] == true)    //open folder automatically so you can see the new file
     tree1.expandItem (directory, true, true, false);

    //????? Trying to get new file selected automatically--Not working
    var length:int = new_file.children().length();
    tree1.selectedItem = new_file.children()[length - 1];
    trace("--\n\n" + new_file + "\n\n" + new_file.children() + "\n\n" + new_file.child(0));
   }
    ]]>
</mx:Script>

<mx:XML source="file_list.xml" id="stuff"/>
<mx:Tree labelField="@label" x="18.5" y="10" width="153" height="192" id="tree1" editable="false"
        change= "changeEvt(event);"
        creationComplete="treeComplete(event)" >
   <mx:dataProvider>
   {stuff}
   </mx:dataProvider>
</mx:Tree>

<mx:Button x="18.5" y="210" label="New File" click="newFile()" id="btnNewFile" enabled="true"/>

</mx:Application>

Here's the XML "file_list.xml":

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

</folder>

</folder>

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[flexcoders] selectedItem problems with Tree Control

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