Re: How to get NSColorPanel's target?
Re: How to get NSColorPanel's target?
- Subject: Re: How to get NSColorPanel's target?
- From: Neil Earnshaw <email@hidden>
- Date: Thu, 21 Aug 2003 14:21:49 +0100
The color panel can work without a target. If its target hasn't been
set then it checks to see if the first responder implements changeColor:
I've got an app delegate method that opens it in response to a
MainMenu->Window->Show Color Panel menu item:
-(IBAction)showColorPanel:(id)sender
{
[[NSColorPanel sharedColorPanel] orderFront:self];
}
and a window controller that implements changeColor:
-(IBAction)changeColor:(id)sender
{
if ( 0 < [_selectedDKNodes count] ) {
int i;
for ( i = 0 ; i < [_selectedDKNodes count] ; i++ ) {
[[_selectedDKNodes objectAtIndex:i] setColor:[sender color]];
}
}
if ( ! ([_selectedDKNodes count] || _selectedDKPath) ) {
[_dkModel setColor:[sender color]];
}
}
As long as its window is the active one, the window controller will get
the message. There's no need to set target or release anything. Its
all automatic.
Hope this helps,
-Neil
On Tuesday, August 19, 2003, at 04:37 AM, Keith Renz wrote:
I'm setting NSColorPanel's shared instance's target to a custom view
(no color well is being used). When I deallocate the view, I would
like to decouple it from the color panel if it is the color panel's
target by resetting the color panel's target and action to nil. I
would like to ask the color panel what its target is, but there's no
method to do so. I can get at the color panel's private _target
instance variable with key value coding ([colorPanel
valueForKey:@"target"]), but this isn't really kosher. Is there a
better way to do this without manually keeping track of the color
panel's target?
Thanks,
Keith
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Neil Earnshaw
Consultant Software Engineer
Object Software Engineers Ltd
email@hidden
Tel : 01747 854 852
Mbl : 07870 209 102
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