Broadcasting <attribute>Change events - undesired behaviour - Forums

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Broadcasting <attribute>Change events - undesired behaviour

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Fedor

Username: ted
Joined: Wed Mar 16, 2011 11:25 pm
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Broadcasting <attribute>Change events - undesired behaviour

Posted: Thu Mar 31, 2011 9:38 pm

+0-

Hi everyone!
I stumbled upon a strange behaviour. YUI pros, tell me whether this OK or I am doing something wrong.

I have a widget with a bunch of attributes. Some of them have the 'broadcast' property set to '1'. The problem is, when I set a global listener to the broadcasted attribute, this listener is unable to prevent the attribute from being set. All it can do is to prevent the 'afterChange' listeners.

Here is the test code: http://jsbin.com/oqehi5/edit (turn on your console).

As you can see, when the listener calls e.preventDefault(), the attribute is already set.

So, is there a way to fix it?

Luke Smith

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Joined: Thu Aug 28, 2008 7:50 am
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Re: Broadcasting <attribute>Change events - undesired behavi

Posted: Fri Apr 01, 2011 9:49 am

+1-

The broadcast system is separate from the bubbling system. If you configure your objects to bubble to Y via myObject.addTarget(Y); then you can prevent the events. Broadcasted events aren't preventable.

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