adapters.h

symbina上可以使用一个xml解析器,对开发网络应用很有好处

/* 
** Copyright (C) 2005 Darrell Karbott ([e-mail])
** This code is free software; you can redistribute it and/or modify
** it under the terms of the GNU Public Licence (GPL) version 2 See
** http://www.gnu.org/ for further details of the GPL.
*/

#ifndef __ADAPTERS_H__
#define __ADAPTERS_H__ 1

#include <e32base.h>

#include "iksdemo.h"

/*
** These interfaces and classes encapsulate the parameter translation
** required to go from the const char* strings used by CIksDemo to
** Symbian TDesC& descriptors and back.
**
** This feels a bit overdesigned but it keeps a lot of repetitions,
** ugly, and error prone code out of the Symbian sources. 
*/

// Translate IUserInterface to use Symbian idioms.
class MIksDemoUserInterface {
 public:
  virtual ~MIksDemoUserInterface() = 0;
  virtual void DisplayJabberMsgFrom(const TDesC& from, const TDesC& msg ) = 0;
  virtual void DisplayStatusMsg(const TDesC& msg) = 0;
  virtual void DisplayErrorMsg(const TDesC& msg) = 0;
  virtual void UpdateConnectionStatus(TBool) = 0;
};

// Translate IUserInterface to use Symbian idioms.
class MIksDemoUserInteractions {
 public:
  virtual ~MIksDemoUserInteractions() = 0;
  virtual TInt Connect(const TDesC& jid, const TDesC& password, TInt port) = 0;
  virtual void Disconnect() = 0;
  virtual TInt SendMsg(const TDesC&, const TDesC&) = 0;
};

/*
** Helper class translates calls into IUserInterface into calls into
** MIksDemoUserInterface.
*/
class CIksDemoUserInterfaceAdapter : public CBase, public IUserInterface {
 public:
  CIksDemoUserInterfaceAdapter(MIksDemoUserInterface* target);
  ~CIksDemoUserInterfaceAdapter();
 public:
  virtual void displayJabberMsgFrom(const char* from, const char* msg );
  virtual void displayStatusMsg(const char* msg);
  virtual void displayErrorMsg(const char* msg);
  // REDFLAG: remove this?
  virtual void updateConnectionStatus(int bConnected);
 private:
  MIksDemoUserInterface* iTarget;
};

/*
** Helper class translates calls into MIksDemoUserInteractions into calls
** into IUserInteractions.
*/
class CIksDemoUserInteractionsAdapter : public CBase, public MIksDemoUserInteractions {
 public:
  CIksDemoUserInteractionsAdapter(IUserInteractions* target);
  ~CIksDemoUserInteractionsAdapter();
 public:
  virtual TInt Connect(const TDesC& jid, const TDesC& password, TInt port);
  virtual void Disconnect();
  virtual TInt SendMsg(const TDesC&, const TDesC&);
 private:
  IUserInteractions* iTarget;
};

#endif