webrtc/talk/xmpp/module.h

/*
 * libjingle
 * Copyright 2004--2005, Google Inc.
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 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
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 *  3. The name of the author may not be used to endorse or promote products 
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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#ifndef TALK_XMPP_MODULE_H_
#define TALK_XMPP_MODULE_H_

#include "talk/xmpp/xmppengine.h"

namespace buzz {

class XmppEngine;

//! This is the base class for extension modules.
//! An engine is registered with the module and the module then hooks the
//! appropriate parts of the engine to implement that set of features.  It is
//! important to unregister modules before destructing the engine.
class XmppModule {
public:
  virtual ~XmppModule() {}

  //! Register the engine with the module.  Only one engine can be associated
  //! with a module at a time.  This method will return an error if there is
  //! already an engine registered.
  virtual XmppReturnStatus RegisterEngine(XmppEngine* engine) = 0;
};

}
#endif  // TALK_XMPP_MODULE_H_