RE: [flexcoders] TREE : extending the tree component

Wed, 22 Jun 2005 21:42:46 -0700

Hmm, I just compiled a Tree subclass that refers to selectedIndex and it worked fine so I’m not sure why you’d get the error.  I also compiled the segment that you gave (while commenting out the pieces you didn’t give) and it compiled OK too, so you must have something else going on.

 

Matt

 

From: [email protected] [mailto:[email protected]] On Behalf Of david_gal-reyniez
Sent: Wednesday, June 22, 2005 3:18 AM
To: [email protected]
Subject: [flexcoders] TREE : extending the tree component

 

Hi everybody!

 

I need your help to cuztomize the Tree component...

I aim at expanding all nodes of my cuztomized tree when initializing it.

 

I created a CuztomizedTree class as following :

------------------------------------------------------------------------------------------------------------------------

import mx.controls.Tree;
import mx.controls.treeclasses.TreeNode;
import mx.controls.Alert;

 

class com.as.components.CustomizedTree extends Tree
{ 

 

function CustomizedTree()
 {
 }
 
 function setIsOpen( node, open, animate, fireEvent):Void
 {

    // actions dedicated to the SetIsOpen method

}

 

 public function expandTree()
 {
  var selectedNode:TreeNode=this.selectedNode;
  if (selectedNode && this.selectedIndex != 0)
  {
   var node:TreeNode=this.getNodeDisplayedAt(this.selectedIndex);
   this.setIsOpen(node,true); 
   setAdaptedIcon(this, selectedNode, selectedNode.attributes.operand);
  } else {
   var i:Number=0;
   var node:TreeNode=this.getTreeNodeAt(i);


   Alert.show("node.selectedIndex : " + node.attributes.label, "______Message__", Alert.OK);

    // this message generates the following message

    //

    // Error /WEB-INF/flex/user_classes/com/as/components/CustomizedTree.as:100

    // There is no property with the name 'selectedIndex'.
    //

    // Error

    // Unable to create ActionScript Component for com.as.components.CustomizedTree: Could not compile 'synthetic: Object.registerClass() for com.as.components.CustomizedTree'


   while (node != undefined)
   {
    if (this.getIsBranch(node) && ! this.getIsOpen(node))
    {
     this.setIsOpen(node,true);
    }
    setAdaptedIcon(this, node, node.attributes.operand);
    i++;
    node=this.getNodeDisplayedAt(i);
   }
  }
 }

---------------------------------------------------------------------------------------------------------------------------------

In my Tree.mxml file, I call this method in an initAppli method

 
 public function initTree()
 {
  tree.expandTree(); // tree is the name of my CuztomizedTree object
 }

------------------------------------------------------------------------------------------------------------------------------------

Any suggestions?

Thank a lot!

 

PS: Thanksfull thoughts to Gordon Smith, Tracy Spratt and Matt Chottin for their suggestions concerning the treenode adding and the tree collapsing!

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