On Thu, Mar 4, 2010 at 5:39 AM, Eric Gorr <mail...@ericgorr.net> wrote:
> The only method (currently) for closing the panel which seems difficult to 
> determine is whether or not the user has clicked in the close (red) button. 
> However, it does appear that -windowShouldClose: is the easiest way to do it.

It might be the easiest, but it seems to me like you might want a more
general-purpose solution, rather than reimplementing the same logic in
every panel's delegate.

// Warning, typed in mail. Probably won't work.
@interface MyPanel : NSPanel {
  BOOL saveVisibility;
}

@implementation MyPanel
- (void)writePreferredVisibilityToUserDefaults:(BOOL)shouldBeVisible {
  // ...
}

- (void)orderWindow:(NSWindowOrderingMode)order relativeTo:(NSInteger)windowNum
{
  if (order != NSWindowOut)
    [self writePreferredVisibilityToUserDefaults:YES];

  [super orderWindow:order relativeTo:windowNum];
}

- (void)performClose:(id)sender {
  saveVisibility = YES;
  [super performClose:sender];
}

- (void)close {
  if (saveVisibility)
    [self writePreferredVisibilityToUserDefaults:NO];

  [super close];
}

--Kyle Sluder
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