| // Copyright 2014 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_APP_LIST_BUTTON_H_ |
| #define ASH_SHELF_APP_LIST_BUTTON_H_ |
| |
| #include <memory> |
| |
| #include "ash/ash_export.h" |
| #include "ash/shelf/app_list_button_controller.h" |
| #include "ash/shelf/shelf_control_button.h" |
| #include "base/macros.h" |
| |
| namespace ash { |
| |
| class Shelf; |
| class ShelfView; |
| |
| // Button used for the AppList icon on the shelf. It opens the app list (in |
| // clamshell mode) or home screen (in tablet mode). Because the clamshell-mode |
| // app list appears like a dismissable overlay, the button is highlighted while |
| // the app list is open in clamshell mode. |
| // |
| // If Assistant is enabled, the button is filled in; long-pressing it will |
| // launch Assistant. |
| class ASH_EXPORT AppListButton : public ShelfControlButton { |
| public: |
| static const char kViewClassName[]; |
| |
| AppListButton(ShelfView* shelf_view, Shelf* shelf); |
| ~AppListButton() override; |
| |
| // views::Button: |
| void OnGestureEvent(ui::GestureEvent* event) override; |
| const char* GetClassName() const override; |
| |
| // Called when the availability of a long-press gesture may have changed, e.g. |
| // when Assistant becomes enabled. |
| void OnVoiceInteractionAvailabilityChanged(); |
| |
| // True if the app list is shown for the display containing this button. |
| bool IsShowingAppList() const; |
| |
| protected: |
| // views::Button: |
| void PaintButtonContents(gfx::Canvas* canvas) override; |
| |
| private: |
| // The controller used to determine the button's behavior. |
| AppListButtonController controller_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AppListButton); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_SHELF_APP_LIST_BUTTON_H_ |