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Retaining an NSWindow size and state - looking for an elegant way to do this

Posted on 2010-08-13
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Last Modified: 2013-12-26
I have a controller class which spawns a window when a certain condition occurs. This window can be closed by the user, moved around or resized.

Ideally, when this condition occurs, I'd like the window to re-open in the same spot the user closed it last time.

Looking for an elegant way to do this. Pointers (or references) will be most welcome.
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Question by:ronenmagid1
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by:pgnatyuk
ID: 33430319
I'm not sure I understand. You want to know how to move? setFrame, I think. The parameter is NSRect.

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by:ronenmagid1
ID: 33430359
No, I can do that myself.

This is why I said "elegant". I thought there might be some Cocoa class that takes the snapshot of the windows location and/or if it's currently miniaturized and saves it into a pfile or something.
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pgnatyuk earned 500 total points
ID: 33430432
Animation?
I attached an action method as an example.
Full example is here:
http://www.wmdeveloper.com/2010/07/cocoa-implicit-animation.html

- (IBAction)move: (id) sender
{
    // The button frame.
    NSRect senderFrame = [sender frame];
    
    //The view bounds. The button belongs to this view.
    NSRect superBounds = [[sender superview] bounds];
    
    // Calculate new position within the view bounds.
    senderFrame.origin.x = (superBounds.size.width -
                            senderFrame.size.width) * drand48();
    senderFrame.origin.y = (superBounds.size.height -
                            senderFrame.size.height) * drand48();
    
    // Move the button.
    //[sender setFrame: senderFrame];
    [[sender animator] setFrame: senderFrame];
}

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Expert Comment

by:pgnatyuk
ID: 33430515
Do you need to store the rectangle somewhere and then read it and restore the view position?
Use NSUserDefaults. An example attached.


#import <Foundation/Foundation.h>

int main (int argc, const char * argv[]) 
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[NSDate date] forKey:@"Date and Time"];
    [defaults synchronize];
	
    NSDate *today = [defaults objectForKey:@"Date and Time"];
    NSLog(@"Saved data: %@", today);
	
    [pool drain];
    return 0;
}

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