Fullscreen support for Lion.

chrome/browser/ui/cocoa/browser_window_controller.mm

Index: chrome/browser/ui/cocoa/browser_window_controller.mm
===================================================================
--- chrome/browser/ui/cocoa/browser_window_controller.mm	(revision 95287)
+++ chrome/browser/ui/cocoa/browser_window_controller.mm	(working copy)
@@ -39,13 +39,13 @@
 #import "chrome/browser/ui/cocoa/fast_resize_view.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_bridge.h"
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.h"
-#import "chrome/browser/ui/cocoa/focus_tracker.h"
-#import "chrome/browser/ui/cocoa/fullscreen_controller.h"
+#import "chrome/browser/ui/cocoa/framed_browser_window.h"
 #import "chrome/browser/ui/cocoa/fullscreen_window.h"
 #import "chrome/browser/ui/cocoa/gesture_utils.h"
 #import "chrome/browser/ui/cocoa/image_utils.h"
 #import "chrome/browser/ui/cocoa/infobars/infobar_container_controller.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.h"
+#import "chrome/browser/ui/cocoa/presentation_mode_controller.h"
 #import "chrome/browser/ui/cocoa/sidebar_controller.h"
 #import "chrome/browser/ui/cocoa/status_bubble_mac.h"
 #import "chrome/browser/ui/cocoa/tab_contents/previewable_contents_controller.h"
@@ -196,6 +196,15 @@
 };
 typedef NSInteger NSWindowAnimationBehavior;
 
+enum {
+  NSWindowCollectionBehaviorFullScreenPrimary = 1 << 7,
+  NSWindowCollectionBehaviorFullScreenAuxiliary = 1 << 8
+};
+
+enum {
+  NSFullScreenWindowMask = 1 << 14
+};
+
 @interface NSWindow (LionSDKDeclarations)
 - (void)setRestorable:(BOOL)flag;
 - (void)setAnimationBehavior:(NSWindowAnimationBehavior)newAnimationBehavior;
@@ -262,6 +271,12 @@
     if ([window respondsToSelector:@selector(setAnimationBehavior:)])
       [window setAnimationBehavior:NSWindowAnimationBehaviorDocumentWindow];
 
+    // Set the window to participate in Lion Fullscreen mode.  Setting this flag
+    // has no effect on Snow Leopard or earlier.
+    NSUInteger collectionBehavior = [window collectionBehavior];
+    collectionBehavior |= NSWindowCollectionBehaviorFullScreenPrimary;
+    [window setCollectionBehavior:collectionBehavior];
+
     // Get the most appropriate size for the window, then enforce the
     // minimum width and height. The window shim will handle flipping
     // the coordinates for us so we can use it to save some code.
@@ -407,8 +422,6 @@
     if ([self hasToolbar])  // Do not create the buttons in popups.
       [toolbarController_ createBrowserActionButtons];
 
-    [self setUpOSFullScreenButton];
-
     // We are done initializing now.
     initializing_ = NO;
   }
@@ -426,11 +439,11 @@
   browser_->CloseAllTabs();
   [downloadShelfController_ exiting];
 
-  // Explicitly release |fullscreenController_| here, as it may call back to
-  // this BWC in |-dealloc|.  We are required to call |-exitFullscreen| before
-  // releasing the controller.
-  [fullscreenController_ exitFullscreen];
-  fullscreenController_.reset();
+  // Explicitly release |presentationModeController_| here, as it may call back
+  // to this BWC in |-dealloc|.  We are required to call |-exitPresentationMode|
+  // before releasing the controller.
+  [presentationModeController_ exitPresentationMode];
+  presentationModeController_.reset();
 
   // Under certain testing configurations we may not actually own the browser.
   if (ownsBrowser_ == NO)
@@ -1018,9 +1031,22 @@
                 [self isFullscreen] ? IDS_EXIT_FULLSCREEN_MAC :
                                       IDS_ENTER_FULLSCREEN_MAC);
             [static_cast<NSMenuItem*>(item) setTitle:menuTitle];
+
+            if (!base::mac::IsOSLionOrLater())
+              [static_cast<NSMenuItem*>(item) setHidden:YES];
           }
           break;
         }
+        case IDC_PRESENTATION_MODE: {
+          enable &= [self supportsFullscreen];
+          if ([static_cast<NSObject*>(item) isKindOfClass:[NSMenuItem class]]) {
+            NSString* menuTitle = l10n_util::GetNSString(
+                [self inPresentationMode] ? IDS_EXIT_PRESENTATION_MAC :
+                                            IDS_ENTER_PRESENTATION_MAC);
+            [static_cast<NSMenuItem*>(item) setTitle:menuTitle];
+          }
+          break;
+        }
         case IDC_SYNC_BOOKMARKS:
           enable &= browser_->profile()->IsSyncAccessible();
           sync_ui_util::UpdateSyncItem(item, enable, browser_->profile());
@@ -1399,7 +1425,8 @@
                relativeTo:[infoBarContainerController_ view]];
 
   // Place the find bar immediately below the toolbar/attached bookmark bar. In
-  // fullscreen mode, it hangs off the top of the screen when the bar is hidden.
+  // presentation mode, it hangs off the top of the screen when the bar is
+  // hidden.
   CGFloat maxY = [self placeBookmarkBarBelowInfoBar] ?
       NSMinY([[toolbarController_ view] frame]) :
       NSMinY([[bookmarkBarController_ view] frame]);
@@ -1431,7 +1458,7 @@
 }
 
 - (NSRect)regularWindowFrame {
-  return [self isFullscreen] ? [savedRegularWindow_ frame] :
+  return [self isFullscreen] ? savedRegularWindowFrame_ :
                                [[self window] frame];
 }
 
@@ -2014,171 +2041,104 @@
 
 @implementation BrowserWindowController(Fullscreen)
 
-- (IBAction)enterFullscreen:(id)sender {
+- (void)handleLionToggleFullscreen {
+  DCHECK(base::mac::IsOSLionOrLater());
   browser_->ExecuteCommand(IDC_FULLSCREEN);
 }
 
+// On Lion, this method is called by either the Lion fullscreen button or the
+// "Enter Full Screen" menu item.  On Snow Leopard, this function is never
+// called by the UI directly, but it provides the implementation for
+// |-setPresentationMode:|.
 - (void)setFullscreen:(BOOL)fullscreen {
-  // The logic in this function is a bit complicated and very carefully
-  // arranged.  See the below comments for more details.
-
   if (fullscreen == [self isFullscreen])
     return;
 
   if (![self supportsFullscreen])
     return;
 
-  // Fade to black.
-  const CGDisplayReservationInterval kFadeDurationSeconds = 0.6;
-  Boolean didFadeOut = NO;
-  CGDisplayFadeReservationToken token;
-  if (CGAcquireDisplayFadeReservation(kFadeDurationSeconds, &token)
-      == kCGErrorSuccess) {
-    didFadeOut = YES;
-    CGDisplayFade(token, kFadeDurationSeconds / 2, kCGDisplayBlendNormal,
-        kCGDisplayBlendSolidColor, 0.0, 0.0, 0.0, /*synchronous=*/true);
+  if (base::mac::IsOSLionOrLater()) {
+    enteredPresentationModeFromFullscreen_ = YES;
+    if ([[self window] respondsToSelector:@selector(toggleSystemFullScreen)])
+      [(id)[self window] toggleSystemFullScreen];
+    return;
   }
 
-  // Close the bookmark bubble, if it's open.  We use |-ok:| instead of
-  // |-cancel:| or |-close| because that matches the behavior when the bubble
-  // loses key status.
-  [bookmarkBubbleController_ ok:self];
+  if (fullscreen)
+    [self enterFullscreenForSnowLeopardOrEarlier];
+  else
+    [self exitFullscreenForSnowLeopardOrEarlier];
+}
 
-  // Save the current first responder so we can restore after views are moved.
-  NSWindow* window = [self window];
-  scoped_nsobject<FocusTracker> focusTracker(
-      [[FocusTracker alloc] initWithWindow:window]);
-  BOOL showDropdown = [self floatingBarHasFocus];
+- (BOOL)isFullscreen {
+  return (fullscreenWindow_.get() != nil) ||
+         ([[self window] styleMask] & NSFullScreenWindowMask);
+}
 
-  // While we move views (and focus) around, disable any bar visibility changes.
-  [self disableBarVisibilityUpdates];
+- (void)togglePresentationMode:(id)sender {
+  // Called only by the presentation mode toggle button.
+  DCHECK(base::mac::IsOSLionOrLater());
+  enteredPresentationModeFromFullscreen_ = YES;
+  browser_->ExecuteCommand(IDC_PRESENTATION_MODE);
+}
 
-  // If we're entering fullscreen, create the fullscreen controller.  If we're
-  // exiting fullscreen, kill the controller.
-  if (fullscreen) {
-    fullscreenController_.reset([[FullscreenController alloc]
-                                  initWithBrowserController:self]);
-  } else {
-    [fullscreenController_ exitFullscreen];
-    fullscreenController_.reset();
+// On Lion, this function is called by either the presentation mode toggle
+// button or the "Enter Presentation Mode" menu item.  In the latter case, this
+// function also triggers the Lion machinery to enter fullscreen mode as well as
+// set presentation mode.  On Snow Leopard, this function is called by the
+// "Enter Presentation Mode" menu item, and triggering presentation mode always
+// moves the user into fullscreen mode.
+- (void)setPresentationMode:(BOOL)presentationMode {
+  // Presentation mode on Leopard and Snow Leopard maps directly to fullscreen
+  // mode.
+  if (!base::mac::IsOSLionOrLater()) {
+    [self setFullscreen:presentationMode];
+    return;
   }
 
-  // Destroy the tab strip's sheet controller.  We will recreate it in the new
-  // window when needed.
-  [tabStripController_ destroySheetController];
+  if (presentationMode) {
+    BOOL fullscreen = [self isFullscreen];
+    [self setShouldUsePresentationModeWhenEnteringFullscreen:YES];
+    enteredPresentationModeFromFullscreen_ = fullscreen;
 
-  // Retain the tab strip view while we remove it from its superview.
-  scoped_nsobject<NSView> tabStripView;
-  if ([self hasTabStrip] && ![self useVerticalTabs]) {
-    tabStripView.reset([[self tabStripView] retain]);
-    [tabStripView removeFromSuperview];
-  }
-
-  // Ditto for the content view.
-  scoped_nsobject<NSView> contentView([[window contentView] retain]);
-  // Disable autoresizing of subviews while we move views around. This prevents
-  // spurious renderer resizes.
-  [contentView setAutoresizesSubviews:NO];
-  [contentView removeFromSuperview];
-
-  NSWindow* destWindow = nil;
-  if (fullscreen) {
-    DCHECK(!savedRegularWindow_);
-    savedRegularWindow_ = [window retain];
-    destWindow = [self createFullscreenWindow];
+    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 focusTabContents];
+      [self setPresentationModeInternal:YES forceDropdown:YES];
+    } else {
+      // If not in fullscreen mode, trigger the Lion fullscreen mode machinery.
+      // Presentation mode will automatically be enabled in
+      // |-windowWillEnterFullScreen:|.
+      if ([[self window] respondsToSelector:@selector(toggleSystemFullScreen)])
+        [(id)[self window] toggleSystemFullScreen];
+    }
   } else {
-    DCHECK(savedRegularWindow_);
-    destWindow = [savedRegularWindow_ autorelease];
-    savedRegularWindow_ = nil;
+    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).
+      if ([[self window] respondsToSelector:@selector(toggleSystemFullScreen)])
+        [(id)[self window] toggleSystemFullScreen];
+    }
   }
-  DCHECK(destWindow);
-
-  // Have to do this here, otherwise later calls can crash because the window
-  // has no delegate.
-  [window setDelegate:nil];
-  [destWindow setDelegate:self];
-
-  // With this call, valgrind complains that a "Conditional jump or move depends
-  // on uninitialised value(s)".  The error happens in -[NSThemeFrame
-  // drawOverlayRect:].  I'm pretty convinced this is an Apple bug, but there is
-  // no visual impact.  I have been unable to tickle it away with other window
-  // or view manipulation Cocoa calls.  Stack added to suppressions_mac.txt.
-  [contentView setAutoresizesSubviews:YES];
-  [destWindow setContentView:contentView];
-
-  // Move the incognito badge if present.
-  if (avatarButton_.get()) {
-    [avatarButton_ removeFromSuperview];
-    [avatarButton_ setHidden:YES];  // Will be shown in layout.
-    [[[destWindow contentView] superview] addSubview:avatarButton_];
-  }
-
-  // Add the tab strip after setting the content view and moving the incognito
-  // badge (if any), so that the tab strip will be on top (in the z-order).
-  if ([self hasTabStrip] && ![self useVerticalTabs])
-    [[[destWindow contentView] superview] addSubview:tabStripView];
-
-  [window setWindowController:nil];
-  [self setWindow:destWindow];
-  [destWindow setWindowController:self];
-  [self adjustUIForFullscreen:fullscreen];
-
-  // Adjust the infobar container. In fullscreen, it needs to be below all
-  // top chrome elements so it only sits atop the web contents. When in normal
-  // mode, it needs to draw over the bookmark bar and part of the toolbar.
-  [[infoBarContainerController_ view] removeFromSuperview];
-  NSView* infoBarDest = [[destWindow contentView] superview];
-  [infoBarDest addSubview:[infoBarContainerController_ view]
-               positioned:fullscreen ? NSWindowBelow : NSWindowAbove
-               relativeTo:fullscreen ? floatingBarBackingView_
-                                     : [bookmarkBarController_ view]];
-
-  // When entering fullscreen mode, the controller forces a layout for us.  When
-  // exiting, we need to call layoutSubviews manually.
-  if (fullscreen) {
-    [fullscreenController_ enterFullscreenForContentView:contentView
-                                            showDropdown:showDropdown];
-  } else {
-    [self layoutSubviews];
-  }
-
-  // Move the status bubble over, if we have one.
-  if (statusBubble_)
-    statusBubble_->SwitchParentWindow(destWindow);
-
-  // Move the title over.
-  [destWindow setTitle:[window title]];
-
-  // The window needs to be onscreen before we can set its first responder.
-  // Ordering the window to the front can change the active Space (either to
-  // the window's old Space or to the application's assigned Space). To prevent
-  // this by temporarily change the collectionBehavior.
-  NSWindowCollectionBehavior behavior = [window collectionBehavior];
-  [destWindow setCollectionBehavior:
-      NSWindowCollectionBehaviorMoveToActiveSpace];
-  [destWindow makeKeyAndOrderFront:self];
-  [destWindow setCollectionBehavior:behavior];
-
-  [focusTracker restoreFocusInWindow:destWindow];
-  [window orderOut:self];
-
-  // We're done moving focus, so re-enable bar visibility changes.
-  [self enableBarVisibilityUpdates];
-
-  // This needs to be done when leaving full-screen mode to ensure that the
-  // button's action is set properly.
-  [self setUpOSFullScreenButton];
-
-  // Fade back in.
-  if (didFadeOut) {
-    CGDisplayFade(token, kFadeDurationSeconds / 2, kCGDisplayBlendSolidColor,
-        kCGDisplayBlendNormal, 0.0, 0.0, 0.0, /*synchronous=*/false);
-    CGReleaseDisplayFadeReservation(token);
-  }
 }
 
-- (BOOL)isFullscreen {
-  return fullscreenController_.get() && [fullscreenController_ isFullscreen];
+- (BOOL)inPresentationMode {
+  return presentationModeController_.get() &&
+      [presentationModeController_ inPresentationMode];
 }
 
 - (void)resizeFullscreenWindow {
@@ -2212,10 +2172,10 @@
   if (![self isBarVisibilityLockedForOwner:owner]) {
     [barVisibilityLocks_ addObject:owner];
 
-    // If enabled, show the overlay if necessary (and if in fullscreen mode).
+    // If enabled, show the overlay if necessary (and if in presentation mode).
     if (barVisibilityUpdatesEnabled_) {
-      [fullscreenController_ ensureOverlayShownWithAnimation:animate
-                                                       delay:delay];
+      [presentationModeController_ ensureOverlayShownWithAnimation:animate
+                                                             delay:delay];
     }
   }
 }
@@ -2226,11 +2186,11 @@
   if ([self isBarVisibilityLockedForOwner:owner]) {
     [barVisibilityLocks_ removeObject:owner];
 
-    // If enabled, hide the overlay if necessary (and if in fullscreen mode).
+    // If enabled, hide the overlay if necessary (and if in presentation mode).
     if (barVisibilityUpdatesEnabled_ &&
         ![barVisibilityLocks_ count]) {
-      [fullscreenController_ ensureOverlayHiddenWithAnimation:animate
-                                                        delay:delay];
+      [presentationModeController_ ensureOverlayHiddenWithAnimation:animate
+                                                              delay:delay];
     }
   }
 }