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 ASH_ACCELERATORS_ACCELERATOR_DISPATCHER_H_ 6 #define ASH_ACCELERATORS_ACCELERATOR_DISPATCHER_H_ 7 8 #include "ash/ash_export.h" 9 #include "base/message_loop/message_loop.h" 10 #include "ui/aura/window.h" 11 #include "ui/aura/window_observer.h" 12 13 namespace ash { 14 15 // Dispatcher for handling accelerators from menu. 16 // 17 // Wraps a nested dispatcher to which control is passed if no accelerator key 18 // has been pressed. 19 // TODO(pkotwicz): Port AcceleratorDispatcher to mac. 20 // TODO(pkotwicz): Add support for a |nested_dispatcher| which sends 21 // events to a system IME. 22 class ASH_EXPORT AcceleratorDispatcher : public base::MessageLoop::Dispatcher, 23 public aura::WindowObserver { 24 public: 25 AcceleratorDispatcher(base::MessageLoop::Dispatcher* nested_dispatcher, 26 aura::Window* associated_window); 27 virtual ~AcceleratorDispatcher(); 28 29 // MessageLoop::Dispatcher overrides: 30 virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE; 31 32 // aura::WindowObserver overrides: 33 virtual void OnWindowDestroying(aura::Window* window) OVERRIDE; 34 35 private: 36 base::MessageLoop::Dispatcher* nested_dispatcher_; 37 38 // Window associated with |nested_dispatcher_| which is used to determine 39 // whether the |nested_dispatcher_| is allowed to receive events. 40 aura::Window* associated_window_; 41 42 DISALLOW_COPY_AND_ASSIGN(AcceleratorDispatcher); 43 }; 44 45 } // namespace ash 46 47 #endif // ASH_ACCELERATORS_ACCELERATOR_DISPATCHER_H_ 48
