Make fullscreen exit bubble link work by preventing the bubble from ever bein...

chrome/browser/views/fullscreen_exit_bubble.h

 // Copyright (c) 2009 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_VIEWS_FULLSCREEN_EXIT_BUBBLE_H__
 #define CHROME_BROWSER_VIEWS_FULLSCREEN_EXIT_BUBBLE_H__
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/command_updater.h"
 #include "chrome/common/slide_animation.h"
 #include "chrome/views/link.h"
 #include "chrome/views/widget_win.h"
 
 // FullscreenExitBubble is responsible for showing a bubble atop the screen in
 // fullscreen mode, telling users how to exit and providing a click target.
 // The bubble auto-hides, and re-shows when the user moves to the screen top.
 
 class FullscreenExitBubble : public views::LinkController,
                              public AnimationDelegate {
  public:
   explicit FullscreenExitBubble(
       views::Widget* frame,
       CommandUpdater::CommandUpdaterDelegate* delegate);
   virtual ~FullscreenExitBubble();
 
  private:
   class FullscreenExitView;
+  class FullscreenExitPopup;
 
   static const double kOpacity;          // Opacity of the bubble, 0.0 - 1.0
   static const int kInitialDelayMs;      // Initial time bubble remains onscreen
   static const int kPositionCheckHz;     // How fast to check the mouse position
   static const int kSlideInRegionHeightPx;
                                          // Height of region triggering slide-in
   static const int kSlideInDurationMs;   // Duration of slide-in animation
   static const int kSlideOutDurationMs;  // Duration of slide-out animation
 
   // views::LinkController
@@ skipping 15 matching lines @@
   // is fully onscreen.
   gfx::Rect GetPopupRect(bool ignore_animation_state) const;
 
   // The root view containing us.
   views::View* root_view_;
 
   // Someone who can toggle fullscreen mode on and off when the user requests
   // it.
   CommandUpdater::CommandUpdaterDelegate* delegate_;
 
-  // We use an HWND for the popup so that it may float above any plugins in the
-  // page.
-  views::WidgetWin* popup_;
+  // The popup itself, which is a slightly modified WidgetWin.  We need to use
+  // a WidgetWin (and thus an HWND) to make the popup float over other HWNDs.
+  FullscreenExitPopup* popup_;
 
   // The contents of the popup.
   FullscreenExitView* view_;
 
   // Animation controlling sliding into/out of the top of the screen.
   scoped_ptr<SlideAnimation> size_animation_;
 
   // Timer to delay before starting the mouse checking/bubble hiding code.
   base::OneShotTimer<FullscreenExitBubble> initial_delay_;
 
   // Timer to poll the current mouse position.  We can't just listen for mouse
   // events without putting a non-empty HWND onscreen (or hooking Windows, which
   // has other problems), so instead we run a low-frequency poller to see if the
   // user has moved in or out of our show/hide regions.
   base::RepeatingTimer<FullscreenExitBubble> mouse_position_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(FullscreenExitBubble);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_FULLSCREEN_EXIT_BUBBLE_H__