NSOpenPanel above a fullscreen NSWindow? - objective-c

Question

I open a window with the following:
NSRect screenRect = [[NSScreen mainScreen] frame];
[super initWithContentRect:screenRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
int windowLevel = CGShieldingWindowLevel();
[self setLevel:windowLevel];
... so the window is fullscreen & above all other window levels (including modal windows). I later want to display an open panel, however the following opens the dialog below the window I created above (it seems that the runModal stuff overrides the requested window level I try to set):
NSOpenPanel *OP = [NSOpenPanel openPanel];
int windowLevel = CGShieldingWindowLevel();
[OP setLevel:windowLevel];
int returnCode = [OP runModal];
... and the following opens a sheet on the window created above (good), however it also winds up showing the menu bar, which I had previously hidden (not what I want):
NSOpenPanel *OP = [NSOpenPanel openPanel];
[OP beginSheetModalForWindow:[self window]
completionHandler:^(NSInteger returnCode) {
NSLog(#"completionHandler called with %d", returnCode);
}];
... so my questions are:
Does anyone know how to open a modal window above the CGShieldingWindowLevel ?
Is there any way to get the menu bar to not show up on the sheet solution I'm trying above ?
Thanks all :-)

Answer 1

OK, here's an even better option - missed this one completely when I was reviewing the docs:
NSOpenPanel *OP = [NSOpenPanel openPanel];
[OP setLevel:CGShieldingWindowLevel()];
[OP beginWithCompletionHandler:^(NSInteger returnCode) {
NSLog(#"completionHandler called with %d", returnCode);
}];
... ie: open the panel as it's own window, which was exactly what I wanted to do in the fist place (duh!)

Answer 2

You can create a category of NSSavePanel like this :
#implementation NSSavePanel (SavePanelSetLevel)
- (void)setLevel:(NSInteger)newLevel
{
[super setLevel:CGShieldingWindowLevel()] ; // NSWindow implementation call
}
#end
because runModal reset the level previously set !

Answer 3

OK, 5 years later, I sorta can make this work - the trick is to open up a second window, promote it to the CGShieldingWindowLevel, make it key & order front, then attach the open sheet to it - the sheet magically appears from wherever the second window is, and although not perfect, it looks a lot better than the solution I came up with originally. Here's the change:
NSOpenPanel *OP = [NSOpenPanel openPanel];
// this is the new bit - make the window 1x1 # the location of your liking
NSRect windowRect = NSMakeRect(0, 1000, 1, 1);
NSWindow *OPW = [[NSWindow alloc] initWithContentRect:windowRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
int windowLevel = CGShieldingWindowLevel();
[OPW setLevel:windowLevel];
[OPW makeKeyAndOrderFront:nil];
// end of new bit, apart from passing OPW for beginSheetModalForWindow
// instead of [self window]
[OP beginSheetModalForWindow:OPW
completionHandler:^(NSInteger returnCode) {
NSLog(#"completionHandler called with %d", returnCode);
}];
... the only think to watch out for is that with the below you can wind up opening up several open dialogs, since the sheet is modal for a window other than the main window - the main window can still accept mouse click events ...