chromeos: Move files in //ash/common to //ash, part 2

ash/common/shelf/wm_shelf.h

-// Copyright 2016 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 ASH_COMMON_SHELF_WM_SHELF_H_
-#define ASH_COMMON_SHELF_WM_SHELF_H_
-
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "ash/common/shelf/shelf_layout_manager_observer.h"
-#include "ash/public/cpp/shelf_types.h"
-#include "base/observer_list.h"
-
-namespace gfx {
-class Rect;
-}
-
-namespace ui {
-class GestureEvent;
-}
-
-namespace ash {
-
-enum class AnimationChangeType;
-class ShelfBezelEventHandler;
-class ShelfLayoutManager;
-class ShelfLayoutManagerTest;
-class ShelfLockingManager;
-class ShelfView;
-class ShelfWidget;
-class StatusAreaWidget;
-class WmShelfObserver;
-class WmWindow;
-
-// Controller for the shelf state. Exists for the lifetime of each root window
-// controller. Note that the shelf widget may not be created until after login.
-class ASH_EXPORT WmShelf : public ShelfLayoutManagerObserver {
- public:
-  WmShelf();
-  ~WmShelf() override;
-
-  // Returns the shelf for the display that |window| is on. Note that the shelf
-  // widget may not exist, or the shelf may not be visible.
-  static WmShelf* ForWindow(WmWindow* window);
-
-  // Returns if shelf alignment options are enabled, and the user is able to
-  // adjust the alignment (eg. not allowed in guest and supervised user modes).
-  static bool CanChangeShelfAlignment();
-
-  void CreateShelfWidget(WmWindow* root);
-  void ShutdownShelfWidget();
-  void DestroyShelfWidget();
-
-  ShelfLayoutManager* shelf_layout_manager() const {
-    return shelf_layout_manager_;
-  }
-
-  ShelfWidget* shelf_widget() { return shelf_widget_.get(); }
-
-  // Creates the shelf view.
-  void CreateShelfView();
-
-  // TODO(jamescook): Eliminate this method.
-  void ShutdownShelf();
-
-  // True after the ShelfView has been created (e.g. after login).
-  bool IsShelfInitialized() const;
-
-  // Returns the window showing the shelf.
-  WmWindow* GetWindow();
-
-  ShelfAlignment alignment() const { return alignment_; }
-  // TODO(jamescook): Replace with alignment().
-  ShelfAlignment GetAlignment() const { return alignment_; }
-  void SetAlignment(ShelfAlignment alignment);
-
-  // Returns true if the shelf alignment is horizontal (i.e. at the bottom).
-  bool IsHorizontalAlignment() const;
-
-  // Returns a value based on shelf alignment.
-  int SelectValueForShelfAlignment(int bottom, int left, int right) const;
-
-  // Returns |horizontal| is shelf is horizontal, otherwise |vertical|.
-  int PrimaryAxisValue(int horizontal, int vertical) const;
-
-  ShelfAutoHideBehavior auto_hide_behavior() const {
-    return auto_hide_behavior_;
-  }
-  void SetAutoHideBehavior(ShelfAutoHideBehavior behavior);
-
-  ShelfAutoHideState GetAutoHideState() const;
-
-  // Invoke when the auto-hide state may have changed (for example, when the
-  // system tray bubble opens it should force the shelf to be visible).
-  void UpdateAutoHideState();
-
-  ShelfBackgroundType GetBackgroundType() const;
-
-  // Whether the shelf view is visible.
-  // TODO(jamescook): Consolidate this with GetVisibilityState().
-  bool IsVisible() const;
-
-  void UpdateVisibilityState();
-
-  ShelfVisibilityState GetVisibilityState() const;
-
-  // Returns the ideal bounds of the shelf assuming it is visible.
-  gfx::Rect GetIdealBounds();
-
-  gfx::Rect GetUserWorkAreaBounds() const;
-
-  // Updates the icon position given the current window bounds. This is used
-  // when dragging panels to reposition them with respect to the other panels.
-  void UpdateIconPositionForPanel(WmWindow* window);
-
-  // Returns the screen bounds of the item for the specified window. If there is
-  // no item for the specified window an empty rect is returned.
-  gfx::Rect GetScreenBoundsOfItemIconForWindow(WmWindow* window);
-
-  // Launch a 0-indexed shelf item in the shelf. A negative index launches the
-  // last shelf item in the shelf.
-  static void LaunchShelfItem(int item_index);
-
-  // Activates the shelf item specified by the index in the list of shelf items.
-  static void ActivateShelfItem(int item_index);
-
-  // Handles a gesture |event| coming from a source outside the shelf widget
-  // (e.g. the status area widget). Allows support for behaviors like toggling
-  // auto-hide with a swipe, even if that gesture event hits another window.
-  // Returns true if the event was handled.
-  bool ProcessGestureEvent(const ui::GestureEvent& event);
-
-  void AddObserver(WmShelfObserver* observer);
-  void RemoveObserver(WmShelfObserver* observer);
-
-  void NotifyShelfIconPositionsChanged();
-  StatusAreaWidget* GetStatusAreaWidget() const;
-
-  void SetVirtualKeyboardBoundsForTesting(const gfx::Rect& bounds);
-  ShelfLockingManager* GetShelfLockingManagerForTesting();
-  ShelfView* GetShelfViewForTesting();
-
- protected:
-  // ShelfLayoutManagerObserver:
-  void WillDeleteShelfLayoutManager() override;
-  void WillChangeVisibilityState(ShelfVisibilityState new_state) override;
-  void OnAutoHideStateChanged(ShelfAutoHideState new_state) override;
-  void OnBackgroundUpdated(ShelfBackgroundType background_type,
-                           AnimationChangeType change_type) override;
-
- private:
-  class AutoHideEventHandler;
-  friend class ShelfLayoutManagerTest;
-
-  // Layout manager for the shelf container window. Instances are constructed by
-  // ShelfWidget and lifetimes are managed by the container windows themselves.
-  ShelfLayoutManager* shelf_layout_manager_ = nullptr;
-
-  std::unique_ptr<ShelfWidget> shelf_widget_;
-
-  // Internal implementation detail. Do not expose externally. Owned by views
-  // hierarchy. Null before login and in secondary display init.
-  ShelfView* shelf_view_ = nullptr;
-
-  // These initial values hide the shelf until user preferences are available.
-  ShelfAlignment alignment_ = SHELF_ALIGNMENT_BOTTOM_LOCKED;
-  ShelfAutoHideBehavior auto_hide_behavior_ = SHELF_AUTO_HIDE_ALWAYS_HIDDEN;
-
-  // Sets shelf alignment to bottom during login and screen lock.
-  std::unique_ptr<ShelfLockingManager> shelf_locking_manager_;
-
-  base::ObserverList<WmShelfObserver> observers_;
-
-  // Forwards mouse and gesture events to ShelfLayoutManager for auto-hide.
-  // TODO(mash): Facilitate simliar functionality in mash: crbug.com/631216
-  std::unique_ptr<AutoHideEventHandler> auto_hide_event_handler_;
-
-  // Forwards touch gestures on a bezel sensor to the shelf.
-  // TODO(mash): Facilitate simliar functionality in mash: crbug.com/636647
-  std::unique_ptr<ShelfBezelEventHandler> bezel_event_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(WmShelf);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SHELF_WM_SHELF_H_