| // Copyright 2019 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_SHELF_BUTTON_DELEGATE_H_ |
| #define ASH_SHELF_SHELF_BUTTON_DELEGATE_H_ |
| |
| #include "ui/events/event.h" |
| |
| namespace ui { |
| class Event; |
| } |
| |
| namespace views { |
| class Button; |
| class InkDrop; |
| } // namespace views |
| |
| namespace ash { |
| class ShelfButton; |
| |
| // ShelfButtonDelegate is an interface to allow ShelfButtons to notify their |
| // host view when they are pressed. |
| // TODO(mohsen): A better approach would be to return a value indicating the |
| // type of action performed such that the button can animate the ink drop. |
| // Currently, it is not possible because showing menu is synchronous and blocks |
| // the call. Fix this after menu is converted to asynchronous. Long-term, the |
| // return value can be merged into ButtonListener. |
| class ShelfButtonDelegate { |
| public: |
| ShelfButtonDelegate() {} |
| ~ShelfButtonDelegate() = default; |
| |
| // Used to let the host view redirect focus. |
| virtual void OnShelfButtonAboutToRequestFocusFromTabTraversal( |
| ShelfButton* button, |
| bool reverse) = 0; |
| |
| // Notify the host view that the button was pressed. |ink_drop| is used to do |
| // appropriate ink drop animation based on the action performed. |
| virtual void ButtonPressed(views::Button* sender, |
| const ui::Event& event, |
| views::InkDrop* ink_drop) = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ShelfButtonDelegate); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_SHELF_SHELF_BUTTON_DELEGATE_H_ |