blob: 9bf6810c8a4035f4497b71c252f3075f4ac862cb [file] [log] [blame]
// 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.
#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 {
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;
} // namespace ash