Hide the tab indicators and the shelf when in immersive + tab fullscreen

chrome/browser/ui/views/frame/immersive_mode_controller_ash.h

 // Copyright 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_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_
 
 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
 
 #include "base/timer.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
 #include "ui/base/events/event_handler.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/views/focus/focus_manager.h"
 #include "ui/views/widget/widget_observer.h"
 
 class BrowserView;
 
 namespace aura {
 class Window;
 }
 
 namespace gfx {
 class Transform;
 }
 
 namespace ui {
 class Layer;
 }
 
 namespace views {
 class View;
 }
 
 class ImmersiveModeControllerAsh : public ImmersiveModeController,
+                                   public content::NotificationObserver,
                                    public ui::EventHandler,
                                    public ui::ImplicitAnimationObserver,
                                    public views::FocusChangeListener,
                                    public views::WidgetObserver {
  public:
   ImmersiveModeControllerAsh();
   virtual ~ImmersiveModeControllerAsh();
 
   // These methods are used to increment and decrement |revealed_lock_count_|.
   // If immersive mode is enabled, a transition from 1 to 0 in
@@ skipping 13 matching lines @@
   virtual bool ShouldHideTopViews() const OVERRIDE;
   virtual bool IsRevealed() const OVERRIDE;
   virtual void MaybeStackViewAtTop() OVERRIDE;
   virtual ImmersiveModeController::RevealedLock*
       GetRevealedLock() OVERRIDE WARN_UNUSED_RESULT;
   virtual void AnchorWidgetToTopContainer(views::Widget* widget,
                                           int y_offset) OVERRIDE;
   virtual void UnanchorWidgetFromTopContainer(views::Widget* widget) OVERRIDE;
   virtual void OnTopContainerBoundsChanged() OVERRIDE;
 
+  // content::NotificationObserver override:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
   // ui::EventHandler overrides:
   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
 
   // views::FocusChangeObserver overrides:
   virtual void OnWillChangeFocus(views::View* focused_before,
                                  views::View* focused_now) OVERRIDE;
   virtual void OnDidChangeFocus(views::View* focused_before,
                                 views::View* focused_now) OVERRIDE;
 
   // views::WidgetObserver overrides:
   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
   virtual void OnWidgetActivationChanged(views::Widget* widget,
                                          bool active) OVERRIDE;
 
   // ui::ImplicitAnimationObserver override:
   virtual void OnImplicitAnimationsCompleted() OVERRIDE;
 
   // Testing interface.
-  void SetHideTabIndicatorsForTest(bool hide);
+  void SetForceHideTabIndicatorsForTest(bool force);
   void StartRevealForTest(bool hovered);
   void SetMouseHoveredForTest(bool hovered);
 
  private:
   enum Animate {
     ANIMATE_NO,
     ANIMATE_SLOW,
     ANIMATE_FAST,
   };
   enum RevealState {
     CLOSED,          // Top container only showing tabstrip, y = 0.
     SLIDING_OPEN,    // All views showing, y animating from -height to 0.
     REVEALED,        // All views showing, y = 0.
     SLIDING_CLOSED,  // All views showing, y animating from 0 to -height.
   };
+  enum TabIndicatorVisibility {
+    TAB_INDICATORS_FORCE_HIDE,
+    TAB_INDICATORS_HIDE,
+    TAB_INDICATORS_SHOW
+  };
 
   // Enables or disables observers for mouse move, focus, and window restore.
   void EnableWindowObservers(bool enable);
 
   // Update |mouse_revealed_lock_| based on the current mouse state and the
   // currently active widget.
   // |maybe_drag| is true if the user may be in the middle of a drag.
   void UpdateMouseRevealedLock(bool maybe_drag);
 
   // Acquire the mouse revealed lock if it is not already held.
   void AcquireMouseRevealedLock();
 
   // Update |focus_revealed_lock_| based on the currently active view and the
   // currently active widget.
   void UpdateFocusRevealedLock();
 
+  // Updates whether fullscreen uses any chrome at all. When using minimal
+  // chrome, a 'light bar' is permanently visible for the launcher and possibly
+  // for the tabstrip.
+  // If |skip_layout| is true, no layout is done as part of the update.
+  void UpdateUseMinimalChrome(bool skip_layout);

[James Cook, 2013/04/22 18:14:16]

Optional: Consider re-introducing the LAYOUT_YES, LAYOUT_NO enum.

+
   // Returns the animation duration given |animate|.
   int GetAnimationDuration(Animate animate) const;
 
   // Temporarily reveals the top-of-window views while in immersive mode,
   // hiding them when the cursor exits the area of the top views. If |animate|
   // is not ANIMATE_NO, slides in the view, otherwise shows it immediately.
   void MaybeStartReveal(Animate animate);
 
   // Enables or disables layer-based painting to allow smooth animations.
   void EnablePaintToLayer(bool enable);
@@ skipping 29 matching lines @@
   BrowserView* browser_view_;
 
   // True when in immersive mode.
   bool enabled_;
 
   // State machine for the revealed/closed animations.
   RevealState reveal_state_;
 
   int revealed_lock_count_;
 
-  // True if the miniature "tab indicators" should be hidden in the main browser
-  // view when immersive mode is enabled.
-  bool hide_tab_indicators_;
+  // The visibility of the miniature "tab indicators" in the main browser view
+  // when immersive mode is enabled and the top-of-window views are closed.
+  TabIndicatorVisibility tab_indicator_visibility_;
 
   // Timer to track cursor being held at the top.
   base::OneShotTimer<ImmersiveModeController> top_timer_;
 
   // Lock which keeps the top-of-window views revealed based on the current
   // mouse state.
   scoped_ptr<RevealedLock> mouse_revealed_lock_;
 
   // Lock which keeps the top-of-window views revealed based on the focused view
   // and the active widget.
   scoped_ptr<RevealedLock> focus_revealed_lock_;
 
   // Native window for the browser, needed to clean up observers.
   aura::Window* native_window_;
 
   // Observer to disable immersive mode when window leaves the maximized state.
   class WindowObserver;
   scoped_ptr<WindowObserver> window_observer_;
 
   // Manages widgets which are anchored to the top-of-window views.
   class AnchoredWidgetManager;
   scoped_ptr<AnchoredWidgetManager> anchored_widget_manager_;
 
+  content::NotificationRegistrar registrar_;
+
   base::WeakPtrFactory<ImmersiveModeControllerAsh> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ImmersiveModeControllerAsh);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_