Global shortcut show hide window method

showHideMainWindow.m

- (void)showHideMainWindow {
    NSNumber *wasActive = @NO;
    if ([[NSRunningApplication currentApplication] isActive]) {
        wasActive = @YES;
        NSNumber *wasOpen = @NO;
        if ([self.window isVisible]) {
            wasOpen = @YES;
            [self.window close];
            [[NSApplication sharedApplication] hide:self];
        } else if (![wasOpen boolValue]) {
            [self.window makeKeyAndOrderFront:self];
        }
    } else if (![wasActive boolValue]) {
        [[NSApplication sharedApplication] activateIgnoringOtherApps:YES];
        [self.window makeKeyAndOrderFront:self];
    }
}