Comments on: Automatic Disabled Icon with Flex Button Control

By: Marisol Marentez

Marisol Marentez — Wed, 17 Nov 2010 22:26:28 +0000

Smashing when i stumble on a excellent blog post like this. Getting a touch weary of the garbage posts some blog writers write on their blogs. Continue the good work. You have a frequent reader now!!

By: David

David — Mon, 19 Jul 2010 21:06:23 +0000

Very cool. Thanks!

By: Tom Van den Eynde

Tom Van den Eynde — Thu, 27 Aug 2009 08:31:31 +0000

Kris,

You’re solution works like a charm! Thx!!

Tom

By: Mario

Mario — Thu, 30 Jul 2009 08:43:39 +0000

Actually I also have _sometimes_ problems with the ‘original’ solution (either I get null pointers, or non styled icons). The one from Kris works fine for me.

By: Kris

Kris — Mon, 22 Jun 2009 15:55:18 +0000

Thanks for the example. I ran into some issues caused by temporarily disabling the control. This seems to work better for me:

package foo {

import mx.controls.Button;
import mx.core.IFlexDisplayObject;
import mx.core.mx_internal;
use namespace mx_internal;

public class IconButton extends Button {

override mx_internal function viewIconForPhase(tempIconName:String):IFlexDisplayObject {
var icon:IFlexDisplayObject = super.viewIconForPhase(tempIconName);
if (tempIconName == disabledIconName) {
icon.alpha = 0.4;
}
return icon;
}
}
}

By: gaga

gaga — Tue, 23 Sep 2008 09:54:15 +0000

Okay, finaly I don’t know why it wasn’t working but it is working again.. I just have had a lign in case the Button doesn’t have an icon defined :
// Fade Disabled Icon
if(this.getStyle(“icon”) != null) {
DisplayObject(this.getChildByName(“disabledIcon”)).alpha = 0.4;
}

By: gaga

gaga — Mon, 22 Sep 2008 13:53:23 +0000

Hi !
I tryed to use your component, but when the Button is at the beginning disabled, strangely it is displayed as enabled when lauching the application.. So it doesn’t think to work fine yet..

By: David

David — Sat, 05 Jan 2008 22:57:02 +0000

@Glen

Thanks for the comment.

I have updated the IconButton component to fix this issue.

By: Glen Black

Glen Black — Wed, 12 Dec 2007 20:15:12 +0000

This is a neat trick; thanks for publishing it.

At runtime, I had immediately received “TypeError: Error #1009: Cannot access a property or method of a null object reference.” on the line that sets the alpha in the IconButton class.

It turns out that if I have a button whose default initial state is enabled, the error occurs. If I make the button’s default initial state disabled and enable the button later, the error goes away; that’s certainly an easy enough workaround for my needs.

I hope this helps someone if they run into the same issue.

Thanks
[gb]