ash/accelerators/nested_dispatcher_controller.h

   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_NESTED_DISPATCHER_CONTROLLER_H_
   6 #define ASH_ACCELERATORS_NESTED_DISPATCHER_CONTROLLER_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "base/callback.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "ui/wm/public/dispatcher_client.h"
  12
  13 namespace ash {
  14
  15 class AcceleratorDispatcher;
  16
  17 // Creates a dispatcher which wraps another dispatcher.
  18 // The outer dispatcher runs first and performs ash specific handling.
  19 // If it does not consume the event it forwards the event to the nested
  20 // dispatcher.
  21 class ASH_EXPORT NestedDispatcherController
  22     : public aura::client::DispatcherClient {
  23  public:
  24   NestedDispatcherController();
  25   virtual ~NestedDispatcherController();
  26
  27   // aura::client::DispatcherClient:
  28   virtual void RunWithDispatcher(
  29       base::MessagePumpDispatcher* dispatcher) OVERRIDE;
  30   virtual void QuitNestedMessageLoop() OVERRIDE;
  31
  32  private:
  33   base::Closure quit_closure_;
  34   scoped_ptr<AcceleratorDispatcher> accelerator_dispatcher_;
  35
  36   DISALLOW_COPY_AND_ASSIGN(NestedDispatcherController);
  37 };
  38
  39 }  // namespace ash
  40
  41 #endif  // ASH_ACCELERATORS_NESTED_DISPATCHER_CONTROLLER_H_