blob: 3ce88e3f62f154a392c6114c707f1bbf29b6d389 [file] [log] [blame]
// Copyright (c) 2012 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/aura/aura_export.h"
namespace ui {
class EventTarget;
namespace aura {
class Window;
namespace client {
// An interface implemented by an object that alters event processing.
class AURA_EXPORT EventClient {
// Returns true if events can be processed by |window| or any of its children.
virtual bool CanProcessEventsWithinSubtree(const Window* window) const = 0;
// Returns the top level EventTarget for the current environment.
virtual ui::EventTarget* GetToplevelEventTarget() = 0;
virtual ~EventClient() {}
// Sets/Gets the event client on the root Window.
AURA_EXPORT void SetEventClient(Window* root_window, EventClient* client);
AURA_EXPORT EventClient* GetEventClient(const Window* root_window);
} // namespace clients
} // namespace aura