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_WM_PUBLIC_DISPATCHER_CLIENT_H_ 6 #define UI_WM_PUBLIC_DISPATCHER_CLIENT_H_ 7 8 #include "base/callback.h" 9 #include "base/macros.h" 10 #include "base/message_loop/message_pump_dispatcher.h" 11 #include "ui/aura/aura_export.h" 12 13 namespace aura { 14 class Window; 15 namespace client { 16 17 class DispatcherClient; 18 19 // A base::RunLoop like object for running a nested message-loop with a 20 // specified DispatcherClient and a MessagePumpDispatcher. 21 class AURA_EXPORT DispatcherRunLoop { 22 public: 23 DispatcherRunLoop(DispatcherClient* client, 24 base::MessagePumpDispatcher* dispatcher); 25 ~DispatcherRunLoop(); 26 27 void Run(); 28 base::Closure QuitClosure(); 29 void Quit(); 30 31 private: 32 base::Closure run_closure_; 33 base::Closure quit_closure_; 34 35 DISALLOW_COPY_AND_ASSIGN(DispatcherRunLoop); 36 }; 37 38 // An interface implemented by an object which handles nested dispatchers. 39 class AURA_EXPORT DispatcherClient { 40 public: ~DispatcherClient()41 virtual ~DispatcherClient() {} 42 43 protected: 44 friend class DispatcherRunLoop; 45 46 virtual void PrepareNestedLoopClosures( 47 base::MessagePumpDispatcher* dispatcher, 48 base::Closure* run_closure, 49 base::Closure* quit_closure) = 0; 50 }; 51 52 AURA_EXPORT void SetDispatcherClient(Window* root_window, 53 DispatcherClient* client); 54 AURA_EXPORT DispatcherClient* GetDispatcherClient(Window* root_window); 55 56 } // namespace client 57 } // namespace aura 58 59 #endif // UI_WM_PUBLIC_DISPATCHER_CLIENT_H_ 60