Replacing views with setContentView

[Andreas Höschler]

Hello all,

in our apps we have to replace views with setContentView:, e.g. in the 
inspector depending on the context. Our code works perfectly on MacOSX 
but failed under GNUstep. I spent 2 days on debugging this in the 
GNUstep sources. I finally figured out that this has to do with 
resizeWithOldSuperviewSize: and probably a no longer valid reference 
size after the replacing the contentView. Finally the following 
modification fixed the problem (last three lines):

GSWindowDecorationView:

- (void) setFrame: (NSRect)frameRect
{
  NSSize oldSize = _frame.size;
  NSView *cv = [_window contentView];

  frameRect = [isa windowFrameRectForFrameRect: frameRect
                                     styleMask: [window styleMask]];

  _autoresizes_subviews = NO;
  [super setFrame: frameRect];

  contentRect = [isa contentRectForWindowFrameRect: frameRect
                                         styleMask: [window styleMask]];

  // Safety Check.
//  [cv setAutoresizingMask: NSViewWidthSizable | NSViewHeightSizable];
//  [cv resizeWithOldSuperviewSize: oldSize];
  [cv setFrame: contentRect];
}

I don't understand what the author intended to do with this safety 
check, but it definitely makes our code fai. I checked 8 applications 
after my modification and all behave well. I therefore recommend to 
apply this patch.

Thanks,

  Andreas