1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_AURA_CLIENT_USER_ACTION_CLIENT_H_ 6 #define UI_AURA_CLIENT_USER_ACTION_CLIENT_H_ 7 8 #include "ui/aura/aura_export.h" 9 10 namespace aura { 11 class Window; 12 namespace client { 13 14 // An interface for handling a user action that isn't handled by the standard 15 // event path. 16 class AURA_EXPORT UserActionClient { 17 public: 18 enum Command { 19 BACK = 0, 20 FORWARD, 21 }; 22 23 // Returns true if the command was handled and false otherwise. 24 virtual bool OnUserAction(Command command) = 0; 25 ~UserActionClient()26 virtual ~UserActionClient() {} 27 }; 28 29 // Sets/gets the client for handling user action on the specified root window. 30 AURA_EXPORT void SetUserActionClient(Window* root_window, 31 UserActionClient* client); 32 AURA_EXPORT UserActionClient* GetUserActionClient(Window* root_window); 33 34 } // namespace client 35 } // namespace aura 36 37 #endif // UI_AURA_CLIENT_USER_ACTION_CLIENT_H_ 38