Add a button to the branch/root in a Flex Tree

Question

Can someone provide me code or  guide me how to  add a button to all nodes that has children/leaf( but not  to leaf). I tried from the example in this link
http://www.remwebdevelopment.com/dev/a31/Flex-Checkbox-TreeItemRenderer.html , but I ma getting buttons for all the nodes(including leaf).
i need to hav ethe button on the rideside corners horizontally to all branches/root.
Please correct me where i am wrong or provide me correct code. Thanks in advance
package  
PKG{
import mx.controls.Button;  
import mx.controls.Tree;  
import mx.controls.treeClasses.TreeItemRenderer;  
import mx.controls.treeClasses.TreeListData;  
public class TreeData extends TreeItemRenderer{
private var bWidth:Number = 30;  
private var bHeight:Number = 20;  
public function TreeData(){
super();}
var btn:Button=new Button();  
override protected function createChildren():void{
//addChild(btn);
super.createChildren();}
override public function set data(value:Object):void{
super.data = value;  
// get the tree that owns us  
var _tree:Tree = Tree(this.parent.parent);  
// if the current node is a branch node  
//for each(item:Object in  
if(TreeListData(super.listData).depth=1)                             -or if(TreeListData(super.listData).hasChildren)   these are not working for me{
btn.width = bWidth;
btn.height= bHeight;
btn.label=
"Remove Attachment";btn.right=10;
else{
override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void{ 
super.updateDisplayList(unscaledWidth,unscaledHeight); 
if(super.data){ 
var tld:TreeListData = TreeListData(super.listData); 
// if the current node is a branch node  
if(TreeListData(super.listData).depth=1){
this.btn.visible=true; 
this.btn.x=200; 
this.btn.y = super.label.y+4; 
//super.label.x = this.btn.x +; 
//this.btn.y = super.label.y+8; 
else{
this.btn.visible=false; 
this.btn.includeInLayout=false;}

Answer 1

Hi Albert.
You need to do a few things for that :
- Create your own GUI status by copying STANDARD_FULLSCREEN from function group SLVC_FULLSCREEN.
- Set your own PF-Status using the Exclude table because otherwise your exclude table would become meaningless.
- define a subroutine to handle the user commands.
Sample implementation :
FORM pf_status USING extab TYPE slis_t_extab.
  extab = pf_exclude.   
  SET PF-STATUS 'STANDARD' EXCLUDING extab.       
ENDFORM.                    "PF_STATUS
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
    EXPORTING
      i_callback_program       = repid
      i_callback_user_command  = 'USER_COMMAND'
      i_callback_pf_status_set = 'PF_STATUS'
      is_layout                = layout
      it_fieldcat              = fieldcat
      it_excluding             = pf_exclude
    TABLES
      t_outtab                 = itab
    EXCEPTIONS
      OTHERS                   = 0.
        FORM user_command  USING r_ucomm LIKE sy-ucomm
                                   rs_selfield TYPE slis_selfield.
ENDFORM.
Please reward points if found helpful.