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 <memory>

#include "ash/public/cpp/immersive/immersive_fullscreen_controller.h"
#include "ash/public/cpp/immersive/immersive_fullscreen_controller_delegate.h"
#include "base/macros.h"
#include "base/scoped_observer.h"
#include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "ui/aura/window_observer.h"
#include "ui/gfx/geometry/rect.h"

namespace aura {
class Window;
}

class ImmersiveModeControllerAsh
    : public ImmersiveModeController,
      public ash::ImmersiveFullscreenControllerDelegate,
      public content::NotificationObserver,
      public aura::WindowObserver {
 public:
  ImmersiveModeControllerAsh();
  ~ImmersiveModeControllerAsh() override;

  ash::ImmersiveFullscreenController* controller() { return &controller_; }

  // ImmersiveModeController overrides:
  void Init(BrowserView* browser_view) override;
  void SetEnabled(bool enabled) override;
  bool IsEnabled() const override;
  bool ShouldHideTopViews() const override;
  bool IsRevealed() const override;
  int GetTopContainerVerticalOffset(
      const gfx::Size& top_container_size) const override;
  ImmersiveRevealedLock* GetRevealedLock(AnimateReveal animate_reveal) override
      WARN_UNUSED_RESULT;
  void OnFindBarVisibleBoundsChanged(
      const gfx::Rect& new_visible_bounds_in_screen) override;
  bool ShouldStayImmersiveAfterExitingFullscreen() override;
  void OnWidgetActivationChanged(views::Widget* widget, bool active) override;

 private:
  // Updates the browser root view's layout including window caption controls.
  void LayoutBrowserRootView();

  // ImmersiveFullscreenController::Delegate overrides:
  void OnImmersiveRevealStarted() override;
  void OnImmersiveRevealEnded() override;
  void OnImmersiveFullscreenEntered() override;
  void OnImmersiveFullscreenExited() override;
  void SetVisibleFraction(double visible_fraction) override;
  std::vector<gfx::Rect> GetVisibleBoundsInScreen() const override;

  // content::NotificationObserver override:
  void Observe(int type,
               const content::NotificationSource& source,
               const content::NotificationDetails& details) override;

  // aura::WindowObserver override:
  void OnWindowPropertyChanged(aura::Window* window,
                               const void* key,
                               intptr_t old) override;
  void OnWindowDestroying(aura::Window* window) override;

  ash::ImmersiveFullscreenController controller_;

  BrowserView* browser_view_ = nullptr;

  // 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_;

  // The fraction of the TopContainerView's height which is visible. Zero when
  // the top-of-window views are not revealed.
  double visible_fraction_ = 1.0;

  content::NotificationRegistrar registrar_;

  ScopedObserver<aura::Window, aura::WindowObserver> observed_windows_{this};

  DISALLOW_COPY_AND_ASSIGN(ImmersiveModeControllerAsh);
};

#endif  // CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_ASH_H_