| // Copyright 2017 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_SHELF_BACK_BUTTON_H_ |
| #define ASH_SHELF_BACK_BUTTON_H_ |
| |
| #include <memory> |
| |
| #include "ash/ash_export.h" |
| #include "ash/shelf/shelf_control_button.h" |
| #include "base/macros.h" |
| |
| namespace ash { |
| |
| // The back button shown on the shelf when tablet mode is enabled. Its opacity |
| // and visiblity are handled by its parent, ShelfView, to ensure the fade |
| // in/out of the icon matches the movement of ShelfView's items. |
| class ASH_EXPORT BackButton : public ShelfControlButton { |
| public: |
| static const char kViewClassName[]; |
| |
| explicit BackButton(ShelfView* shelf_view); |
| ~BackButton() override; |
| |
| // views::Button: |
| void NotifyClick(const ui::Event& event) override; |
| void PaintButtonContents(gfx::Canvas* canvas) override; |
| const char* GetClassName() const override; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(BackButton); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_SHELF_BACK_BUTTON_H_ |