Comments on: Deleting items in a List from an item renderer

By: Steven Shongrunden

Steven Shongrunden — Tue, 13 Mar 2012 18:13:12 +0000

@jpeal - I believe the renderer above should work fine whether it is inline or not. This is because the deleteItem() logic is in the renderer itself. If you want to move this logic out of the renderer you might want to use the parentDocument property. Or a more robust approach would be to have the renderer dispatch a custom event on its parent List and then setup a listener for that event.

By: jpeal

jpeal — Tue, 13 Mar 2012 13:16:56 +0000

This is exactly what I want to accomplish, except that my itemrenderer is not an inline one. How would you access and execute the deleteItem() function if it was not an inline itemrenderer?

By: Daniel Lorenzo

Daniel Lorenzo — Sat, 04 Feb 2012 22:11:12 +0000

@mzx
You can use the “is” operator to verify the baseclass:

if (this.owner is DataGroup) { …

if (this.owner is List) { …

Maybe there is an interface for typecasting, or I think in that you can safely typecast the dataprovider like this:

var dp:IList = Object(this.owner).dataProvider as IList;

By: Daniel Lorenzo

Daniel Lorenzo — Sat, 04 Feb 2012 22:02:06 +0000

Here’s a way to do it with a DataGroup, in the same context as the example above:

public function deleteItem():void {
DataGroup( this.parent ).dataProvider.removeItemAt( this.itemIndex );
}

By: Luciana Cuarelli

Luciana Cuarelli — Tue, 27 Dec 2011 10:31:39 +0000

It’s exactly what I was googling for
Thank you xD

By: Steven Shongrunden

Steven Shongrunden — Wed, 29 Dec 2010 19:22:54 +0000

@mzx – Yes, this is officially documented in the DOM spec here: http://opensource.adobe.com/wiki/display/flexsdk/Gumbo+DOM+Tree+API

This blog post might also be interesting as it demonstrates the difference between parent and owner:
http://flexponential.com/2009/12/08/differences-between-ivisualelement-parent-and-ivisualelement-owner/

By: mzx

mzx — Wed, 29 Dec 2010 09:42:46 +0000

nice, but is it anywhere documented that itemRenderer’s owner is ( and still in later sdk’s ) List control itself?

By: felix

felix — Wed, 02 Jun 2010 01:51:06 +0000

yay! thanx for the tips!