/////////////////////////////////////////////////////////////////////////////
//
//  OPC Trend VC++ Client:	InfoServer.h
//							(Source File)
//
/////////////////////////////////////////////////////////////////////////////
//
//          Author: Raphael Imhof
//    Initial Date: 11/04/98
//       $Workfile: InfoServer.h $
//       $Revision: 1 $
//           $Date: 7/27/99 5:24p $
//   Target System: Microsoft Windows NT 4.0
//     Environment: Visual C++ 5.0 / OPC DataAccess 1.0 / 2.0
//         Remarks: 
//
/////////////////////////////////////////////////////////////////////////////
//
//     Description: interface of the CInfoServer class.
//					Encapsulation of OPC server related methods.
//					
//
/////////////////////////////////////////////////////////////////////////////
//
//  History of Changes     (Please remove very old comments and blank lines!)
//            $Log: /IDK/OPCServer/clients/VC++/Trend/InfoServer.h $
// 
// 1     7/27/99 5:24p Imhof
// 
// 1     7/27/99 5:19p Imhof
// 
// 6     1/15/99 7:04p Imhof
// Updated legal notice.
// 
// 5     12/15/98 10:30a Imhof
// Modifications for OPC 2.0
// 
// 4     11/06/98 5:53p Imhof
// Added header, comment and made some small code changes.
// 
// 
//  $Nokeywords:$ (To avoid useless search while checking in.)
/////////////////////////////////////////////////////////////////////////////
//  Copyright (C) 1998, Siemens Building Technologies, Inc. Landis Division
//
// SIEMENS BUILDING TECHNOLOGIES, INC. IS PROVIDING THE FOLLOWING
// EXAMPLES OF CODE AS SAMPLE ONLY.
//
// SIEMENS BUILDING TECHNOLOGIES, INC.  MAKES NO REPRESENTATIONS
// OR WARRANTIES OF ANY KIND  WITH RESPECT TO THE VALIDTY OF THE 
// CODES   OR   DESIRED   RESULTS   AND   DISCLAIMS   ALL   SUCH 
// REPRESENTATIONS   AND   WARRANTIES,  INCLUDING  FOR  EXAMPLE, 
// WARRANTIES  OF  MERCHANTABILITY  AND FITNESS FOR A PARTICULAR 
// PURPOSE.    SIEMENS  BUILIDNG  TECHNOLOGIES,  INC.  DOES  NOT 
// REPRESENT  OR  WARRANT  THAT  THE  FOLLOWING CODE SAMPLES ARE 
// ACCURATE, VALID, COMPLETE OR CURRENT.
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_INFOSERVER_H__4648BED9_2AEA_11D2_AD89_00104B2C9D06__INCLUDED_)
#define AFX_INFOSERVER_H__4648BED9_2AEA_11D2_AD89_00104B2C9D06__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

#include "group.h"
#include "IOPCServer.h"
#include "OpcShutDownRequest.h"
//#include "IAdviceSink.h"

const float OPC_VERSION_10 = 1.0;
const float OPC_VERSION_20 = 2.0;

class CInfoServer  
{
public:
	BOOL AddGroup(CGroup** group);
	BOOL RemoveGroup(CGroup** group);
	BOOL DisplayError(HRESULT dwError);
	BOOL GetErrorString(HRESULT hr, CString& sErrorText);
	BOOL GetSystemErrorString(HRESULT hr, CString& sErrorText);
	BOOL Disconnect();
	BOOL Connect();
	BOOL IsConnected();
	void SetConnected(BOOL bConnected);
	BOOL ChooseServer();
	CInfoServer();
	virtual ~CInfoServer();

	CComPtr<IUnknown> GetInterface();
	unsigned int GetGroups(CArray<CGroup*, CGroup*>** groups);

	void SetOPCServer(CString sOPCServer);
	CString GetOPCServer();
	void SetOPCServerComputer(CString sOPCServerComputer);
	CString GetOPCServerComputer();
	CString GetOPCServerName();
	void SetOPCServerCLSID(CLSID clsidOPCServer);
	CLSID GetOPCServerCLSID();

	//options
	float GetOPCVersion();
	void SetOPCVersion(float opc_version);

private:
	CComPtr<IUnknown>			m_pUnkn;
	CArray<CGroup*, CGroup*>	m_Groups;

	/*
	no async trend read support
	CIAdviseSink*				m_pAdviseSink;
	*/

	CComObject<COPCShutDownRequest>* m_pShutDownConnectionPoint;

	CString						m_sOPCServerComputer; //remote node
	CString						m_sOPCServer; //opc server name
	CLSID						m_clsidOPCServer;
	BOOL						m_bConnected;

	//options
	float						m_fOPCVersion;

};

#endif // !defined(AFX_INFOSERVER_H__4648BED9_2AEA_11D2_AD89_00104B2C9D06__INCLUDED_)