chrome/browser/ui/cocoa/fullscreen_window.mm

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #import "chrome/browser/ui/cocoa/fullscreen_window.h"
   6
   7 #import "chrome/browser/ui/cocoa/themed_window.h"
   8
   9 @implementation FullscreenWindow
  10
  11 // Make sure our designated initializer gets called.
  12 - (id)init {
  13   return [self initForScreen:[NSScreen mainScreen]];
  14 }
  15
  16 - (id)initForScreen:(NSScreen*)screen {
  17   NSRect contentRect;
  18   contentRect.origin = NSZeroPoint;
  19   contentRect.size = [screen frame].size;
  20
  21   if ((self = [super initWithContentRect:contentRect
  22                                styleMask:NSBorderlessWindowMask
  23                                  backing:NSBackingStoreBuffered
  24                                    defer:YES
  25                                   screen:screen])) {
  26     [self setReleasedWhenClosed:NO];
  27     // Borderless windows don't usually show up in the Windows menu so whine at
  28     // Cocoa until it complies. See -dealloc and -setTitle: as well.
  29     [NSApp addWindowsItem:self title:@"" filename:NO];
  30   }
  31   return self;
  32 }
  33
  34 - (void)dealloc {
  35   // Paranoia; doesn't seem to be necessary but it doesn't hurt.
  36   [NSApp removeWindowsItem:self];
  37
  38   [super dealloc];
  39 }
  40
  41 - (void)setTitle:(NSString *)title {
  42   [NSApp changeWindowsItem:self title:title filename:NO];
  43   [super setTitle:title];
  44 }
  45
  46 // According to
  47 // http://www.cocoabuilder.com/archive/message/cocoa/2006/6/19/165953 ,
  48 // NSBorderlessWindowMask windows cannot become key or main.
  49 // In our case, however, we don't want that behavior, so we override
  50 // canBecomeKeyWindow and canBecomeMainWindow.
  51
  52 - (BOOL)canBecomeKeyWindow {
  53   return YES;
  54 }
  55
  56 - (BOOL)canBecomeMainWindow {
  57   return YES;
  58 }
  59
  60 // When becoming/resigning main status, explicitly set the background color,
  61 // which is required by |TabView|.
  62 - (void)becomeMainWindow {
  63   [super becomeMainWindow];
  64   [self setBackgroundColor:[NSColor windowFrameColor]];
  65 }
  66
  67 - (void)resignMainWindow {
  68   [super resignMainWindow];
  69   [self setBackgroundColor:[NSColor windowBackgroundColor]];
  70 }
  71
  72 // We need our own version, since the default one wants to flash the close
  73 // button (and possibly other things), which results in nothing happening.
  74 - (void)performClose:(id)sender {
  75   BOOL shouldClose = YES;
  76
  77   // If applicable, check if this window should close.
  78   id delegate = [self delegate];
  79   if ([delegate respondsToSelector:@selector(windowShouldClose:)])
  80     shouldClose = [delegate windowShouldClose:self];
  81
  82   if (shouldClose) {
  83     [self close];
  84   }
  85 }
  86
  87 - (BOOL)validateUserInterfaceItem:(id<NSValidatedUserInterfaceItem>)item {
  88   SEL action = [item action];
  89
  90   // Explicitly enable |-performClose:| (see above); otherwise the fact that
  91   // this window does not have a close button results in it being disabled.
  92   if (action == @selector(performClose:))
  93     return YES;
  94
  95   return [super validateUserInterfaceItem:item];
  96 }
  97
  98 @end