Enables permission bubbles to remain visible during fulscreen on Mac.

chrome/browser/ui/cocoa/presentation_mode_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/presentation_mode_controller.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #import "base/mac/mac_util.h"
@@ skipping 148 matching lines @@
 // the window gains or loses main status as well as in |-cleanup|.
 - (void)showActiveWindowUI;
 - (void)hideActiveWindowUI;
 
 @end
 
 
 @implementation PresentationModeController
 
 @synthesize inPresentationMode = inPresentationMode_;
+@synthesize alwaysShowDropdown = alwaysShowDropdown_;
 
 - (id)initWithBrowserController:(BrowserWindowController*)controller {
   if ((self = [super init])) {
     browserController_ = controller;
     systemFullscreenMode_ = base::mac::kFullScreenModeNormal;
   }
 
   // Let the world know what we're up to.
   [[NSNotificationCenter defaultCenter]
     postNotificationName:kWillEnterFullscreenNotification
                   object:nil];
 
   return self;
 }
 
 - (void)dealloc {
   DCHECK(!inPresentationMode_);
   DCHECK(!trackingArea_);
   [super dealloc];
 }
 
 - (void)enterPresentationModeForContentView:(NSView*)contentView
                                showDropdown:(BOOL)showDropdown {
   DCHECK(!inPresentationMode_);
   enteringPresentationMode_ = YES;
   inPresentationMode_ = YES;
   contentView_ = contentView;
+  if (alwaysShowDropdown_)
+    showDropdown = YES;
   [self changeFloatingBarShownFraction:(showDropdown ? 1 : 0)];
 
   // Register for notifications.  Self is removed as an observer in |-cleanup|.
   NSNotificationCenter* nc = [NSNotificationCenter defaultCenter];
   NSWindow* window = [browserController_ window];
 
   // Disable these notifications on Lion as they cause crashes.
   // TODO(rohitrao): Figure out what happens if a fullscreen window changes
   // monitors on Lion.
   if (base::mac::IsOSSnowLeopard()) {
@@ skipping 24 matching lines @@
 - (void)exitPresentationMode {
   [[NSNotificationCenter defaultCenter]
     postNotificationName:kWillLeaveFullscreenNotification
                   object:nil];
   DCHECK(inPresentationMode_);
   inPresentationMode_ = NO;
 
   [self cleanup];
 }
 
+- (void)setAlwaysShowDropdown:(BOOL)alwaysShowDropdown {
+  alwaysShowDropdown_ = alwaysShowDropdown;
+  if (alwaysShowDropdown)
+    [self ensureOverlayShownWithAnimation:YES delay:YES];
+  else
+    [self ensureOverlayHiddenWithAnimation:YES delay:YES];
+}
+
 - (void)windowDidChangeScreen:(NSNotification*)notification {
   [browserController_ resizeFullscreenWindow];
 }
 
 - (void)windowDidMove:(NSNotification*)notification {
   [browserController_ resizeFullscreenWindow];
 }
 
 - (void)windowDidBecomeMain:(NSNotification*)notification {
   [self showActiveWindowUI];
@@ skipping 59 matching lines @@
   } else {
     DCHECK(!delay);
     [self cancelAllTimers];
     [self changeOverlayToFraction:1 withAnimation:NO];
   }
 }
 
 - (void)ensureOverlayHiddenWithAnimation:(BOOL)animate delay:(BOOL)delay {
   if (!inPresentationMode_)
     return;
+  if (alwaysShowDropdown_)
+    return;
 
   if (animate) {
     if (delay) {
       [self startHideTimer];
     } else {
       [self cancelAllTimers];
       [self changeOverlayToFraction:0 withAnimation:YES];
     }
   } else {
     DCHECK(!delay);
@@ skipping 164 matching lines @@
                                           delay:YES];
 }
 
 - (void)scheduleHideForMouse {
   [browserController_ releaseBarVisibilityForOwner:self
                                      withAnimation:YES
                                              delay:YES];
 }
 
 - (void)setupTrackingArea {
+  if (alwaysShowDropdown_)
+    return;
   if (trackingArea_) {
     // If the tracking rectangle is already |trackingAreaBounds_|, quit early.
     NSRect oldRect = [trackingArea_ rect];
     if (NSEqualRects(trackingAreaBounds_, oldRect))
       return;
 
     // Otherwise, remove it.
     [self removeTrackingAreaIfNecessary];
   }
 
@@ skipping 95 matching lines @@
 }
 
 - (void)showTimerFire:(NSTimer*)timer {
   DCHECK_EQ(showTimer_, timer);  // This better be our show timer.
   [showTimer_ invalidate];       // Make sure it doesn't repeat.
   showTimer_.reset();            // And get rid of it.
   [self changeOverlayToFraction:1 withAnimation:YES];
 }
 
 - (void)hideTimerFire:(NSTimer*)timer {
+  DCHECK(!alwaysShowDropdown_);
   DCHECK_EQ(hideTimer_, timer);  // This better be our hide timer.
   [hideTimer_ invalidate];       // Make sure it doesn't repeat.
   hideTimer_.reset();            // And get rid of it.
   [self changeOverlayToFraction:0 withAnimation:YES];
 }
 
 - (void)cleanup {
   [self cancelMouseExitCheck];
   [self cancelAnimationAndTimers];
   [[NSNotificationCenter defaultCenter] removeObserver:self];
@@ skipping 27 matching lines @@
 }
 
 - (void)hideActiveWindowUI {
   if ([self shouldToggleMenuBar])
     [self setSystemFullscreenModeTo:base::mac::kFullScreenModeNormal];
 
   // TODO(rohitrao): Remove the Exit Fullscreen button.  http://crbug.com/35956
 }
 
 @end