Implemented fullscreen exit animation with AppKit

chrome/browser/ui/cocoa/framed_browser_window.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_COCOA_FRAMED_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_COCOA_FRAMED_BROWSER_WINDOW_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "chrome/browser/ui/cocoa/chrome_browser_window.h"
@@ skipping 17 matching lines @@
 // unhandled keyboard events and subclassing NSWindow is the only method to do
 // this. We also handle our own window controls and custom window frame drawing.
 @interface FramedBrowserWindow : ChromeBrowserWindow {
  @private
   BOOL shouldHideTitle_;
   BOOL hasTabStrip_;
   NSButton* closeButton_;
   NSButton* miniaturizeButton_;
   NSButton* zoomButton_;
 
+  // Locks the window's frame and style mask. If it's set to YES, then the
+  // frame and the style mask cannot be changed.
+  BOOL frameAndStyleMaskLock_;
+
   CGFloat windowButtonsInterButtonSpacing_;
 }
 
 // Designated initializer.
 - (id)initWithContentRect:(NSRect)contentRect
               hasTabStrip:(BOOL)hasTabStrip;
 
 // Tells the window to suppress title drawing.
 - (void)setShouldHideTitle:(BOOL)flag;
 
+// When the lock is set to YES, the frame and style mask of the Window cannot be
+// changed. This is used to prevent AppKit from making these unwanted changes
+// to the window during exit fullscreen transition. It is very important to
+// release this lock after the transition is completed.
+- (void)setFrameAndStyleMaskLock:(BOOL)lock;
+
+// This method is overridden to prevent AppKit from  setting the style mask
+// when frameAndStyleMaskLock_ is set to true.
+- (void)setStyleMask:(NSUInteger)styleMask;
+
+// This method is overridden to prevent the AppKit from setting the frame when
+// frameAndStyleMaskLock_ is set to true.
+- (void)setFrame:(NSRect)windowFrame
+         display:(BOOL)displayViews
+         animate:(BOOL)performAnimation;
+
 // Returns the desired spacing between window control views.
 - (CGFloat)windowButtonsInterButtonSpacing;
 
 // Calls the superclass's implementation of |-toggleFullScreen:|.
 - (void)toggleSystemFullScreen;
 
 // Called by CustomFrameView to determine a custom location for the Lion
 // fullscreen button. Returns NSZeroPoint to use the Lion default.
 - (NSPoint)fullScreenButtonOriginAdjustment;
 
@@ skipping 14 matching lines @@
 
 // Undocumented Cocoa API to suppress drawing of the window's title.
 // -setTitle: still works, but the title set only applies to the
 // miniwindow and menus (and, importantly, Expose).  Overridden to
 // return |shouldHideTitle_|.
 -(BOOL)_isTitleHidden;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_FRAMED_BROWSER_WINDOW_H_