base/message_loop/message_pump_ozone.h

   1 // Copyright (c) 2013 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 BASE_MESSAGE_LOOP_MESSAGE_PUMP_OZONE_H_
   6 #define BASE_MESSAGE_LOOP_MESSAGE_PUMP_OZONE_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/memory/scoped_vector.h"
  10 #include "base/message_loop/message_pump_dispatcher.h"
  11 #include "base/message_loop/message_pump_libevent.h"
  12 #include "base/message_loop/message_pump_observer.h"
  13 #include "base/observer_list.h"
  14
  15 namespace base {
  16
  17 // This class implements a message-pump for processing events from input devices
  18 // Refer to MessagePump for further documentation.
  19 class BASE_EXPORT MessagePumpOzone : public MessagePumpLibevent,
  20                                      public MessagePumpDispatcher {
  21  public:
  22   MessagePumpOzone();
  23   virtual ~MessagePumpOzone();
  24
  25   // Returns the UI message pump.
  26   static MessagePumpOzone* Current();
  27
  28   // Add/Remove the root window dispatcher.
  29   void AddDispatcherForRootWindow(MessagePumpDispatcher* dispatcher);
  30   void RemoveDispatcherForRootWindow(MessagePumpDispatcher* dispatcher);
  31
  32   void RunWithDispatcher(Delegate* delegate, MessagePumpDispatcher* dispatcher);
  33
  34   // Add / remove an Observer, which will start receiving notifications
  35   // immediately.
  36   void AddObserver(MessagePumpObserver* observer);
  37   void RemoveObserver(MessagePumpObserver* observer);
  38
  39   // Overridden from MessagePumpDispatcher.
  40   virtual bool Dispatch(const NativeEvent& event) OVERRIDE;
  41
  42  private:
  43   std::vector<MessagePumpDispatcher*> dispatcher_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(MessagePumpOzone);
  46 };
  47
  48 typedef MessagePumpOzone MessagePumpForUI;
  49
  50 }  // namespace base
  51
  52 #endif  // BASE_MESSAGE_LOOP_MESSAGE_PUMP_OZONE_H_