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      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
     99