How about this?
private function hideListener(event:Event):void {
trace("container " + event.target.toString() + "is
hidden");
var myContainer:Container = event.target as Container;
if (myContainer && myContainer.contains(DetailFrame)) {
trace("my control is hidden!");
}
}
________________________________
From: [email protected]
[mailto:[EMAIL PROTECTED] On Behalf Of dorkie dork from
dorktown
Sent: Wednesday, March 07, 2007 6:17 PM
To: [email protected]
Subject: Re: [flexcomponents]Event that tells me when parent is hidden
or shown
the prev code works when the parent is a container but fails when the
event is generated by a button.
i tried to check if the target is a container but this returns false.
this isn't right. but how do you check this?
var isContainer:Boolean = event.target.isPrototypeOf(Container);
was
var myContainer:Container = Container(event.target);
On 07 Mar 2007 17:09:54 -0800, Alex Harui <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> > wrote:
That should do it.
________________________________
From: [email protected]
<mailto:[email protected]> [mailto:flexcompone
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> ] On Behalf Of dorkie
dork from dorktown
Sent: Wednesday, March 07, 2007 5:07 PM
To: [email protected]
<mailto:[email protected]>
Subject: Re: [flexcomponents]Event that tells me when parent is hidden
or shown
i think i got it. does this look right?
import mx.core.Container;
import mx.events.FlexEvent;
private function init():void {
Application.application.addEventListener
(FlexEvent.HIDE,hideListener, true);
}
private function hideListener(event:Event):void {
trace("container " + event.target.toString() + "is
hidden");
var myContainer:Container = Container(event.target);
if (myContainer.contains(DetailFrame)) {
trace("my control is hidden!");
}
}
On 3/7/07, Alex Harui <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >
wrote:
If there's a panel in a navigator that is going invisible, or a entire
container of some sort, that's high enough and then you won't have extra
traffic to wade through
The contains() test is usually good enough to know that it affects you.
-Alex
Private function parentGoingInvisibleHandler(event:Event):void
{
If (Container(event.target).contains(me))
{
Dowhatever();
}
}
________________________________
From: [email protected]
<mailto:[email protected]> [mailto:flexcompone
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> ] On Behalf Of Peter
Hall
Sent: Wednesday, March 07, 2007 4:05 PM
To: [email protected]
<mailto:[email protected]>
Subject: Re: [flexcomponents]Event that tells me when parent is hidden
or shown
To be sure, you need to listen to systemManger. Then check the target
and see if it is an ancestor of your component. It's a bit messy
still...
Peter
On 3/7/07, dorkie dork from dorktown <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> > wrote:
to which object would i add this so called "super" listener alex speaks
of?
On 07 Mar 2007 10:56:24 -0800, Gordon Smith < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> > wrote:
> adding event listeners does not add overhead does it?
Not enough to worry about. But Alex's later reply had a better solution
using the capture phase that doesn't require adding as many listeners.
> when a parent container is hidden how does it hide the children
When you set the 'visible' property of a DisplayObjectContainer to
false, the Flash Player doesn't render that container or any of its
descendants.
- Gordon
________________________________
From: [email protected]
<mailto:[email protected]> [mailto:flexcompone
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> ] On Behalf Of dorkie
dork from dorktown
Sent: Tuesday, March 06, 2007 9:59 PM
To: [email protected]
<mailto:[email protected]>
Subject: Re: [flexcomponents]Event that tells me when parent is hidden
or shown
ok. thanks gordon. so i just iterated up the chain adding event
listeners i should be ok. adding event listeners does not add overhead
does it? its the functions that get called that can add overhead right?
one more additional question. when a parent container is hidden how does
it hide the children? i thought it removed them through removeChild but
no event is dispatched. in fact no hide, remove, removed or
removeFromStage event is triggered when a parent container is hidden.
On 06 Mar 2007 21:36:03 -0800, Gordon Smith < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> > wrote:
I think your component will have to listen to 'show' and 'hide' events
from each of its ancestors.
- Gordon
________________________________
From: [email protected]
<mailto:[email protected]> [mailto:flexcompone
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> ] On Behalf Of dorkie
dork from dorktown
Sent: Tuesday, March 06, 2007 8:00 PM
To: [email protected]
<mailto:[email protected]>
Subject: [flexcomponents]Event that tells me when parent is hidden or
shown
I have a component that needs to know when a parent, grand parent, great
grand parent etc, is hidden and when it is shown. The hide and show
events never seem to be called on the children of a container that is
hidden or shown.
