[Refactor] Move the non-browser specific logic of ImmersiveModeControllerAsh into ash part 2

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/timer.h"
+#include "ash/wm/immersive_fullscreen_controller.h"
+#include "ash/wm/window_state_observer.h"
+#include "base/memory/scoped_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
-#include "ui/aura/window_observer.h"
-#include "ui/events/event_handler.h"
-#include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/rect.h"
-#include "ui/views/focus/focus_manager.h"
-#include "ui/views/widget/widget_observer.h"
-
-class BrowserView;
-class BookmarkBarView;
 
 namespace aura {
 class Window;
 }
 
-namespace gfx {
-class SlideAnimation;
-class Transform;
-}
-
-namespace ui {
-class Layer;
-class LocatedEvent;
-}
-
-namespace views {
-class View;
-}
-
-class ImmersiveModeControllerAsh : public ImmersiveModeController,
-                                   public content::NotificationObserver,
-                                   public gfx::AnimationDelegate,
-                                   public ui::EventHandler,
-                                   public views::FocusChangeListener,
-                                   public views::WidgetObserver,
-                                   public aura::WindowObserver {
+class ImmersiveModeControllerAsh
+    : public ImmersiveModeController,
+      public ash::ImmersiveFullscreenController::Delegate,
+      public ash::wm::WindowStateObserver,
+      public content::NotificationObserver {
  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
-  // |revealed_lock_count_| closes the top-of-window views and a transition
-  // from 0 to 1 in |revealed_lock_count_| reveals the top-of-window views.
-  void LockRevealedState(AnimateReveal animate_reveal);
-  void UnlockRevealedState();
-
   // ImmersiveModeController overrides:
-  virtual void Init(Delegate* delegate,
-                    views::Widget* widget,
-                    views::View* top_container) OVERRIDE;
+  virtual void Init(BrowserView* browser_view) OVERRIDE;
   virtual void SetEnabled(bool enabled) OVERRIDE;
   virtual bool IsEnabled() const OVERRIDE;
   virtual bool ShouldHideTabIndicators() const OVERRIDE;
   virtual bool ShouldHideTopViews() const OVERRIDE;
   virtual bool IsRevealed() const OVERRIDE;
   virtual int GetTopContainerVerticalOffset(
       const gfx::Size& top_container_size) const OVERRIDE;
   virtual ImmersiveRevealedLock* GetRevealedLock(
       AnimateReveal animate_reveal) OVERRIDE WARN_UNUSED_RESULT;
   virtual void OnFindBarVisibleBoundsChanged(
       const gfx::Rect& new_visible_bounds_in_screen) OVERRIDE;
   virtual void SetupForTest() 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;
-  virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
-  virtual void OnGestureEvent(ui::GestureEvent* 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;
-
-  // gfx::AnimationDelegate overrides:
-  virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
-  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
-
-  // aura::WindowObserver overrides:
-  virtual void OnWindowPropertyChanged(aura::Window* window,
-                                       const void* key,
-                                       intptr_t old) OVERRIDE;
-  virtual void OnAddTransientChild(aura::Window* window,
-                                   aura::Window* transient) OVERRIDE;
-  virtual void OnRemoveTransientChild(aura::Window* window,
-                                      aura::Window* transient) OVERRIDE;
-
  private:
-  friend class ImmersiveModeControllerAshTest;
-
-  enum AllowRevealWhileClosing {
-    ALLOW_REVEAL_WHILE_CLOSING_YES,
-    ALLOW_REVEAL_WHILE_CLOSING_NO
-  };
-  enum Animate {
-    ANIMATE_NO,
-    ANIMATE_SLOW,
-    ANIMATE_FAST,
-  };
-  enum Layout {
-    LAYOUT_YES,
-    LAYOUT_NO
-  };
-  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
-  };
-  enum SwipeType {
-    SWIPE_OPEN,
-    SWIPE_CLOSE,
-    SWIPE_NONE
-  };
-
-  // Enables or disables observers for mouse move, focus, and window restore.
+  // Enables or disables observers for window restore and entering / exiting
+  // tab fullscreen.
   void EnableWindowObservers(bool enable);
 
-  // Updates |top_edge_hover_timer_| based on a mouse |event|. If the mouse is
-  // hovered at the top of the screen the timer is started. If the mouse moves
-  // away from the top edge, or moves too much in the x direction, the timer is
-  // stopped.
-  void UpdateTopEdgeHoverTimer(ui::MouseEvent* event);
-
-  // Updates |located_event_revealed_lock_| based on the current mouse state and
-  // the current touch state.
-  // |event| is NULL if the source event is not known.
-  // |allow_reveal_while_closing| indicates whether the mouse and touch
-  // are allowed to initiate a reveal while the top-of-window views are sliding
-  // closed.
-  void UpdateLocatedEventRevealedLock(
-      ui::LocatedEvent* event,
-      AllowRevealWhileClosing allow_reveal_while_closing);
-
-  // Acquires |located_event_revealed_lock_| if it is not already held.
-  void AcquireLocatedEventRevealedLock();
-
-  // Updates |focus_revealed_lock_| based on the currently active view and the
-  // currently active widget.
-  void UpdateFocusRevealedLock();
-
-  // Update |located_event_revealed_lock_| and |focus_revealed_lock_| as a
-  // result of a gesture of |swipe_type|. Returns true if any locks were
-  // acquired or released.
-  bool UpdateRevealedLocksForSwipe(SwipeType swipe_type);
-
-  // 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.
-  void UpdateUseMinimalChrome(Layout layout);
-
-  // 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);
-
   // Updates the browser root view's layout including window caption controls.
   void LayoutBrowserRootView();
 
-  // Called when the animation to slide open the top-of-window views has
-  // completed.
-  void OnSlideOpenAnimationCompleted(Layout layout);
-
-  // Hides the top-of-window views if immersive mode is enabled and nothing is
-  // keeping them revealed. Optionally animates.
-  void MaybeEndReveal(Animate animate);
-
-  // Called when the animation to slide out the top-of-window views has
-  // completed.
-  void OnSlideClosedAnimationCompleted();
-
-  // Returns the type of swipe given |event|.
-  SwipeType GetSwipeType(ui::GestureEvent* event) const;
-
-  // Returns true if a mouse event at |location_in_screen| should be ignored.
-  // Ignored mouse events should not contribute to revealing or unrevealing the
-  // top-of-window views.
-  bool ShouldIgnoreMouseEventAtLocation(
-      const gfx::Point& location_in_screen) const;
-
-  // True when |location| is "near" to the top container. When the top container
-  // is not closed "near" means within the displayed bounds or above it. When
-  // the top container is closed "near" means either within the displayed
-  // bounds, above it, or within a few pixels below it. This allow the container
-  // to steal enough pixels to detect a swipe in and handles the case that there
-  // is a bezel sensor above the top container.
-  bool ShouldHandleGestureEvent(const gfx::Point& location) const;
-
-  // Recreate |bubble_manager_| and start observing any bubbles anchored to a
-  // child of |top_container_|.
-  void RecreateBubbleManager();
-
   // Shrinks or expands the touch hit test by updating insets for the render
   // window depending on if top_inset is positive or negative respectively.
   // Used to ensure that touch events at the top of the screen go to the top
   // container so a slide gesture can be generated when the content window is
   // consuming all touch events sent to it.
   void SetRenderWindowTopInsetsForTouch(int top_inset);
 
-  // Injected dependencies. Not owned.
-  Delegate* delegate_;
-  views::Widget* widget_;
-  views::View* top_container_;
+  // Sets whether the tab strip is painted in a short "light bar" style.
+  void SetTabIndicatorsVisible(bool visible);
 
-  // True if the window observers are enabled.
+  // ImmersiveFullscreenController::Delegate overrides:
+  virtual void OnImmersiveRevealStarted() OVERRIDE;
+  virtual void OnImmersiveRevealEnded() OVERRIDE;
+  virtual void OnImmersiveFullscreenExited() OVERRIDE;
+  virtual void SetVisibleFraction(double visible_fraction) OVERRIDE;
+  virtual std::vector<gfx::Rect> GetVisibleBoundsInScreen() OVERRIDE;
+
+  // ash::wm::WindowStateObserver override:
+  virtual void OnWindowShowTypeChanged(
+      ash::wm::WindowState* window_state,
+      ash::wm::WindowShowType old_type) OVERRIDE;
+
+  // content::NotificationObserver override:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  scoped_ptr<ash::ImmersiveFullscreenController> controller_;
+
+  // Not owned.
+  BrowserView* browser_view_;
+  aura::Window* native_window_;
+
+  // True if the observers for window restore and entering / exiting tab
+  // fullscreen are enabled.
   bool observers_enabled_;
 
-  // True when in immersive mode.
-  bool enabled_;
-
-  // State machine for the revealed/closed animations.
-  RevealState reveal_state_;
-
-  int revealed_lock_count_;
-
-  // 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 edge of the screen.
-  base::OneShotTimer<ImmersiveModeController> top_edge_hover_timer_;
-
-  // The cursor x position in screen coordinates when the cursor first hit the
-  // top edge of the screen.
-  int mouse_x_when_hit_top_in_screen_;
-
-  // Tracks if the controller has seen a ET_GESTURE_SCROLL_BEGIN, without the
-  // following events.
-  bool gesture_begun_;
+  // Whether a short "light bar" version of the tab strip should be painted when
+  // the top-of-window views are closed. If |use_tab_indicators_| is false, the
+  // tab strip is not painted at all when the top-of-window views are closed.
+  bool use_tab_indicators_;
 
   // The current visible bounds of the find bar, in screen coordinates. This is
   // an empty rect if the find bar is not visible.
   gfx::Rect find_bar_visible_bounds_in_screen_;
 
-  // Lock which keeps the top-of-window views revealed based on the current
-  // mouse state and the current touch state. Acquiring the lock is used to
-  // trigger a reveal when the user moves the mouse to the top of the screen
-  // and when the user does a SWIPE_OPEN edge gesture.
-  scoped_ptr<ImmersiveRevealedLock> located_event_revealed_lock_;
-
-  // Lock which keeps the top-of-window views revealed based on the focused view
-  // and the active widget. Acquiring the lock never triggers a reveal because
-  // a view is not focusable till a reveal has made it visible.
-  scoped_ptr<ImmersiveRevealedLock> focus_revealed_lock_;
-
-  // Native window for the browser.
-  aura::Window* native_window_;
-
-  // The animation which controls sliding the top-of-window views in and out.
-  scoped_ptr<gfx::SlideAnimation> animation_;
-
-  // Whether the animations are disabled for testing.
-  bool animations_disabled_for_test_;
-
-  // Manages bubbles which are anchored to a child of |top_container_|.
-  class BubbleManager;
-  scoped_ptr<BubbleManager> bubble_manager_;
+  // The fraction of the TopContainerView's height which is visible. Zero when
+  // the top-of-window views are not revealed regardless of
+  // |use_tab_indicators_|.
+  double visible_fraction_;
 
   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_