src/apps/mediaplayer/support/AbstractLOAdapter.h

   1 /*
   2  * Copyright 2006, Haiku.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Ingo Weinhold <bonefish@cs.tu-berlin.de>
   7  */
   8
   9 // This class provides some basic functionality for derivation of a
  10 // listener -> observer adapter.
  11 // The derived class should implement constructors similar to the
  12 // ones of this class and pass the respective parameter.
  13 // Each of the listener hook functions should construct a message
  14 // and let it be delivered by DeliverMessage().
  15
  16 #ifndef ABSTRACT_LO_ADAPTER_H
  17 #define ABSTRACT_LO_ADAPTER_H
  18
  19 #include <SupportDefs.h>
  20
  21 class BHandler;
  22 class BLooper;
  23 class BMessage;
  24 class BMessenger;
  25
  26 class AbstractLOAdapter {
  27  public:
  28                                                                 AbstractLOAdapter(BHandler* handler);
  29                                                                 AbstractLOAdapter(const BMessenger& messenger);
  30         virtual                                         ~AbstractLOAdapter();
  31
  32                         void                            DeliverMessage(BMessage* message);
  33                         void                            DeliverMessage(BMessage& message);
  34                         void                            DeliverMessage(uint32 command);
  35
  36  private:
  37                         BHandler*                       fHandler;
  38                         BMessenger*                     fMessenger;
  39 };
  40
  41 #endif  // ABSTRACT_LO_ADAPTER_H