src/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     [[self contentView] setWantsLayer:YES];
  31   }
  32   return self;
  33 }
  34
  35 - (void)dealloc {
  36   // Paranoia; doesn't seem to be necessary but it doesn't hurt.
  37   [NSApp removeWindowsItem:self];
  38
  39   [super dealloc];
  40 }
  41
  42 - (void)setTitle:(NSString *)title {
  43   [NSApp changeWindowsItem:self title:title filename:NO];
  44   [super setTitle:title];
  45 }
  46
  47 // According to
  48 // http://www.cocoabuilder.com/archive/message/cocoa/2006/6/19/165953 ,
  49 // NSBorderlessWindowMask windows cannot become key or main.
  50 // In our case, however, we don't want that behavior, so we override
  51 // canBecomeKeyWindow and canBecomeMainWindow.
  52
  53 - (BOOL)canBecomeKeyWindow {
  54   return YES;
  55 }
  56
  57 - (BOOL)canBecomeMainWindow {
  58   return YES;
  59 }
  60
  61 // When becoming/resigning main status, explicitly set the background color,
  62 // which is required by |TabView|.
  63 - (void)becomeMainWindow {
  64   [super becomeMainWindow];
  65   [self setBackgroundColor:[NSColor windowFrameColor]];
  66 }
  67
  68 - (void)resignMainWindow {
  69   [super resignMainWindow];
  70   [self setBackgroundColor:[NSColor windowBackgroundColor]];
  71 }
  72
  73 // We need our own version, since the default one wants to flash the close
  74 // button (and possibly other things), which results in nothing happening.
  75 - (void)performClose:(id)sender {
  76   BOOL shouldClose = YES;
  77
  78   // If applicable, check if this window should close.
  79   id delegate = [self delegate];
  80   if ([delegate respondsToSelector:@selector(windowShouldClose:)])
  81     shouldClose = [delegate windowShouldClose:self];
  82
  83   if (shouldClose) {
  84     [self close];
  85   }
  86 }
  87
  88 - (BOOL)validateUserInterfaceItem:(id<NSValidatedUserInterfaceItem>)item {
  89   SEL action = [item action];
  90
  91   // Explicitly enable |-performClose:| (see above); otherwise the fact that
  92   // this window does not have a close button results in it being disabled.
  93   if (action == @selector(performClose:))
  94     return YES;
  95
  96   return [super validateUserInterfaceItem:item];
  97 }
  98
  99 @end