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

ash/common/shelf/shelf_button.h

-// Copyright 2013 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_SHELF_BUTTON_H_
-#define ASH_COMMON_SHELF_SHELF_BUTTON_H_
-
-#include "ash/ash_export.h"
-#include "base/macros.h"
-#include "ui/gfx/shadow_value.h"
-#include "ui/views/controls/button/custom_button.h"
-
-namespace views {
-class ImageView;
-}
-
-namespace ash {
-class InkDropButtonListener;
-class ShelfView;
-
-// Button used for items on the launcher, except for the AppList.
-class ASH_EXPORT ShelfButton : public views::CustomButton {
- public:
-  static const char kViewClassName[];
-
-  // Used to indicate the current state of the button.
-  enum State {
-    // Nothing special. Usually represents an app shortcut item with no running
-    // instance.
-    STATE_NORMAL = 0,
-    // Button has mouse hovering on it.
-    STATE_HOVERED = 1 << 0,
-    // Underlying ShelfItem has a running instance.
-    STATE_RUNNING = 1 << 1,
-    // Underlying ShelfItem is active (i.e. has focus).
-    STATE_ACTIVE = 1 << 2,
-    // Underlying ShelfItem needs user's attention.
-    STATE_ATTENTION = 1 << 3,
-    STATE_FOCUSED = 1 << 4,
-    // Hide the status (temporarily for some animations).
-    STATE_HIDDEN = 1 << 5,
-  };
-
-  ShelfButton(InkDropButtonListener* listener, ShelfView* shelf_view);
-  ~ShelfButton() override;
-
-  // Sets the image to display for this entry.
-  void SetImage(const gfx::ImageSkia& image);
-
-  // Retrieve the image to show proxy operations.
-  const gfx::ImageSkia& GetImage() const;
-
-  // |state| is or'd into the current state.
-  void AddState(State state);
-  void ClearState(State state);
-  int state() const { return state_; }
-
-  // Returns the bounds of the icon.
-  gfx::Rect GetIconBounds() const;
-
-  // Called when user started dragging the shelf button.
-  void OnDragStarted(const ui::LocatedEvent* event);
-
-  // Overrides to views::CustomButton:
-  void ShowContextMenu(const gfx::Point& p,
-                       ui::MenuSourceType source_type) override;
-
-  // View override - needed by unit test.
-  void OnMouseCaptureLost() override;
-
- protected:
-  // View overrides:
-  const char* GetClassName() const override;
-  bool OnMousePressed(const ui::MouseEvent& event) override;
-  void OnMouseReleased(const ui::MouseEvent& event) override;
-  bool OnMouseDragged(const ui::MouseEvent& event) override;
-  void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
-  void Layout() override;
-  void ChildPreferredSizeChanged(views::View* child) override;
-  void OnFocus() override;
-  void OnBlur() override;
-  void OnPaint(gfx::Canvas* canvas) override;
-
-  // ui::EventHandler overrides:
-  void OnGestureEvent(ui::GestureEvent* event) override;
-
-  // views::CustomButton overrides:
-  std::unique_ptr<views::InkDropRipple> CreateInkDropRipple() const override;
-  bool ShouldEnterPushedState(const ui::Event& event) override;
-  std::unique_ptr<views::InkDrop> CreateInkDrop() override;
-  void NotifyClick(const ui::Event& event) override;
-
-  // Sets the icon image with a shadow.
-  void SetShadowedImage(const gfx::ImageSkia& bitmap);
-
- private:
-  class AppStatusIndicatorView;
-
-  // Updates the parts of the button to reflect the current |state_| and
-  // alignment. This may add or remove views, layout and paint.
-  void UpdateState();
-
-  InkDropButtonListener* listener_;
-
-  // The shelf view hosting this button.
-  ShelfView* shelf_view_;
-
-  // The icon part of a button can be animated independently of the rest.
-  views::ImageView* icon_view_;
-
-  // Draws an indicator underneath the image to represent the state of the
-  // application.
-  AppStatusIndicatorView* indicator_;
-
-  // The current application state, a bitfield of State enum values.
-  int state_;
-
-  gfx::ShadowValues icon_shadows_;
-
-  // If non-null the destuctor sets this to true. This is set while the menu is
-  // showing and used to detect if the menu was deleted while running.
-  bool* destroyed_flag_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShelfButton);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SHELF_SHELF_BUTTON_H_