Datagrid: Custom Itemrenderer

Question

Hello,
my Datagrid consists of a variable number of columns that are
handled by the same Itemrenderer. Now I have the problem that I
can't find out which column I belong to when I am in the override
set data function.
Any hints how i can back track to what column the "current"
Itemrenderer belongs or is processing at that moment?
Thanks and GzG
Nerun

Answer 1

I had the exact requirement. Multiple columns using the same
item renderer and needing to know what was clicked. Essentially I
solved it in three steps.
1. Override the datagid to add your own custom events;
package com.psc.eis.view
import mx.controls.DataGrid;
import mx.events.ListEvent;
[Event( name = "MyViewCurrentEvent", type =
"mx.events.ListEvent" ) ]
[Event( name = "MyEditCurrentEvent", type =
"mx.events.ListEvent" ) ]
[Event( name = "MyDeleteCurrentEvent", type =
"mx.events.ListEvent" ) ]
[Event( name = "MySearchEvent", type = "mx.events.ListEvent"
public class MyDataGrid extends DataGrid
public function MyDataGrid() { super()}
public static var
MY_VIEW_CURRENT_EVENT:String="MyViewCurrentEvent";
public static var
MY_EDIT_CURRENT_EVENT:String="MyEditCurrentEvent";
public static var
MY_DELETE_CURRENT_EVENT:String="MyDeleteCurrentEvent";
public static var MY_SEARCH_EVENT : String =
"MySearchEvent";
2. In your item renderer create a click handler that
dispatches the appropriate event
<?xml version="1.0" encoding="utf-8"?>
<mx:HBox xmlns:mx="
http://www.adobe.com/2006/mxml"
horizontalAlign="center">
<mx:Script>
<![CDATA[
private function clickHandler() : void
import mx.events.ListEvent;
var event:ListEvent = new ListEvent(
MyDataGrid.MY_EDIT_CURRENT_EVENT );
event.itemRenderer = this;
owner.dispatchEvent(event);
]]>
</mx:Script>
<mx:Image id="imageDelete" source="images/bluepencil.gif"
width="20" click="clickHandler()"/>
</mx:HBox>
3. In your mxml for the datagrid setup the event handler
<psc:MyDataGrid id="dataGridProjects" dataProvider="{. .
MyViewCurrentEvent="viewCurrentHandler(event)"
MyEditCurrentEvent="editCurrentHandler(event)"
MyDeleteCurrentEvent="deleteCurrentHandler(event)"
>
That's it.