Re: Windows and Default Notification Center
Re: Windows and Default Notification Center
- Subject: Re: Windows and Default Notification Center
- From: Public Look <email@hidden>
- Date: Fri, 23 Jul 2004 11:57:28 -0400
From
http://developer.apple.com/documentation/Cocoa/Reference/
ApplicationKit/ObjC_classic/Classes/NSWindow.html
Working with window status
windowDidBecomeKey:
windowDidBecomeMain:
windowDidResignKey:
windowDidResignMain:
However, you problem description suggests you want to use the responder
chain (which handles you issue already) instead of notifications.
On Jul 23, 2004, at 11:08 AM, Bruce Truax wrote:
>
In my Cocoa Document based app my window controller has a method which
>
handles messages which are sent to the default notification center.
>
These
>
messages are typically commands for actions sent by various menu
>
dialogs.
>
This method works great when there is one window open but when I have
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multiple windows all windows receive the command. This is because each
>
window controller registers itself as a receiver when it is created.
>
Obviously I have to manage who receives these messages as windows are
>
moved
>
to the front. I was looking for a window or window controller method
>
which
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is called as a window is made the key window but I cannot find one.
>
>
>
I register the with the default notification center as follows:
>
>
//register to recieve the ACCommandReady notification sent by the
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dialogs
>
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[[NSNotificationCenter defaultCenter]
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addObserver:self
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selector:@selector(processCommand:)
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name:@"ACCommandReady"
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object:nil];
>
>
>
I then use the following statements to send a command to the window
>
controller:
>
>
NSNotificationCenter *defaultCenter;
>
defaultCenter = [NSNotificationCenter defaultCenter];
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[defaultCenter postNotificationName:@"ACCommandReady"
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object:command];
>
>
>
The processCommand method in the window controller extracts the
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command from
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the NSNotification object and passes it on to the appropriate handler.
>
>
What is the best way to handle these messages? I assume that somehow I
>
should be sending the messages to the first responder but I do not see
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a way
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to pass a message with an argument to the first responder.
>
>
Thanks.
>
>
--
>
____________________________________________________________
>
Bruce E. Truax email: email@hidden
>
Optical Engineering Consultant
>
>
Diffraction Limited Design LLC
>
388 Wedgewood Road voice: 860-276-0450
>
Southington, CT 06489 fax: 860-620-9026
>
http://www.dld-llc.com
>
_____________________________________________________________
>
>
Bruce
>
_______________________________________________
>
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