FullscreenExitBubble temp UI for Mac.

chrome/browser/ui/cocoa/browser_window_controller.mm

 // Copyright (c) 2011 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.
 
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 
 #include <Carbon/Carbon.h>
 
 #include <cmath>
 #include <numeric>
@@ skipping 1930 matching lines @@
   if (fullscreen == [self isFullscreen])
     return;
 
   if (![self supportsFullscreen])
     return;
 
   if (base::mac::IsOSLionOrLater()) {
     enteredPresentationModeFromFullscreen_ = YES;
     if ([[self window] isKindOfClass:[FramedBrowserWindow class]])
       [static_cast<FramedBrowserWindow*>([self window]) toggleSystemFullScreen];
-    return;
+  } else {
+    if (fullscreen)
+      [self enterFullscreenForSnowLeopardOrEarlier];
+    else
+      [self exitFullscreenForSnowLeopardOrEarlier];
   }
 
-  if (fullscreen)
-    [self enterFullscreenForSnowLeopardOrEarlier];
-  else
-    [self exitFullscreenForSnowLeopardOrEarlier];
+  if (fullscreen) {
+    [self showFullscreenExitBubbleIfNecessary];
+  } else {
+    [self destroyFullscreenExitBubbleIfNecessary];
+  }
 }
 
 - (BOOL)isFullscreen {
   return (fullscreenWindow_.get() != nil) ||
          ([[self window] styleMask] & NSFullScreenWindowMask);
 }
 
 - (void)togglePresentationModeForLionOrLater:(id)sender {
   // Called only by the presentation mode toggle button.
   DCHECK(base::mac::IsOSLionOrLater());
@@ skipping 10 matching lines @@
 - (void)setPresentationMode:(BOOL)presentationMode {
   // Presentation mode on Leopard and Snow Leopard maps directly to fullscreen
   // mode.
   if (base::mac::IsOSSnowLeopardOrEarlier()) {
     [self setFullscreen:presentationMode];
     return;
   }
 
   if (presentationMode) {
     BOOL fullscreen = [self isFullscreen];
-    [self setShouldUsePresentationModeWhenEnteringFullscreen:YES];
+    BOOL fullscreen_for_tab = browser_->is_fullscreen_for_tab();
+    if (!fullscreen_for_tab)
+      [self setShouldUsePresentationModeWhenEnteringFullscreen:YES];
     enteredPresentationModeFromFullscreen_ = fullscreen;
 
     if (fullscreen) {
       // If already in fullscreen mode, just toggle the presentation mode
       // setting.  Go through an elaborate dance to force the overlay to show,
       // then animate out once the mouse moves away.  This helps draw attention
       // to the fact that the UI is in an overlay.  Focus the tab contents
       // because the omnibox is the most likely source of bar visibility locks,
       // and taking focus away from the omnibox releases its lock.
       [self lockBarVisibilityForOwner:self withAnimation:NO delay:NO];
       [self focusTabContents];
       [self setPresentationModeInternal:YES forceDropdown:YES];
       [self releaseBarVisibilityForOwner:self withAnimation:YES delay:YES];
     } else {
       // If not in fullscreen mode, trigger the Lion fullscreen mode machinery.
       // Presentation mode will automatically be enabled in
       // |-windowWillEnterFullScreen:|.
       NSWindow* window = [self window];
       if ([window isKindOfClass:[FramedBrowserWindow class]])
         [static_cast<FramedBrowserWindow*>(window) toggleSystemFullScreen];
     }
+
+    [self showFullscreenExitBubbleIfNecessary];
   } else {
     if (enteredPresentationModeFromFullscreen_) {
       // The window is currently in fullscreen mode, but the user is choosing to
       // turn presentation mode off (choosing to always show the UI).  Set the
       // preference to ensure that presentation mode will stay off for the next
       // window that goes fullscreen.
       [self setShouldUsePresentationModeWhenEnteringFullscreen:NO];
       [self setPresentationModeInternal:NO forceDropdown:NO];
     } else {
       // The user entered presentation mode directly from non-fullscreen mode
       // using the "Enter Presentation Mode" menu item and is using that same
       // menu item to exit presentation mode.  In this case, exit fullscreen
       // mode as well (using the Lion machinery).
       NSWindow* window = [self window];
       if ([window isKindOfClass:[FramedBrowserWindow class]])
         [static_cast<FramedBrowserWindow*>(window) toggleSystemFullScreen];
     }
+
+    [self destroyFullscreenExitBubbleIfNecessary];
   }
 }
 
 - (BOOL)inPresentationMode {
   return presentationModeController_.get() &&
       [presentationModeController_ inPresentationMode];
 }
 
 - (void)resizeFullscreenWindow {
   DCHECK([self isFullscreen]);
@@ skipping 119 matching lines @@
 
 - (BOOL)supportsBookmarkBar {
   return [self supportsWindowFeature:Browser::FEATURE_BOOKMARKBAR];
 }
 
 - (BOOL)isTabbedWindow {
   return browser_->is_type_tabbed();
 }
 
 @end  // @implementation BrowserWindowController(WindowType)