PC Direkt 1995 March/PCD_395.iso/starview/wntmsci/german/svdde.hx0/SVDDE.HXX

Text File | 1994-01-21 | 10.1 KB | 423 lines

/*******************************************************************
*  SVDDE.HXX
*  (c) 1992-1994 STAR DIVISION
*******************************************************************/

#ifndef _SVDDE_HXX
#define _SVDDE_HXX

#ifndef _SV_HXX
#include <sv.hxx>
#endif

class  DdeString;
class  DdeData;
class  DdeConnection;
class  DdeTransaction;
class  DdeLink;
class  DdeRequest;
class  DdeWarmLink;
class  DdeHotLink;
class  DdePoke;
class  DdeExecute;
class  DdeItem;
class  DdeTopic;
class  DdeService;
class  ConvList;
struct DdeDataImp;
struct DdeImp;

DECLARE_LIST( DdeConnections, DdeConnection* );
DECLARE_LIST( DdeTransactions, DdeTransaction* );
DECLARE_LIST( DdeServices, DdeService* );
DECLARE_LIST( DdeTopics, DdeTopic* );
DECLARE_LIST( DdeItems, DdeItem* );
DECLARE_LIST( DdeFormats, long );
DECLARE_LIST( StringList, String* );

// -----------
// - DdeData -
// -----------

class DdeData
{
    friend class    DdeInternal;
    friend class    DdeService;
    friend class    DdeConnection;
    friend class    DdeTransaction;
    DdeDataImp*     pImp;
    void            Lock();

public:
                    DdeData();
                    DdeData( const char*, long, ULONG = FORMAT_STRING );
                    DdeData( const String& );
                    DdeData( const DdeData& );
                    ~DdeData();

    operator const  char*() const;
    operator        long() const;

    ULONG           GetFormat() const;

    DdeData&        operator = ( const DdeData& );
};

// ------------------
// - DdeServiceList -
// ------------------

class DdeServiceList
{
    StringList      aServices;

                    DdeServiceList( const DdeServiceList& );
    int             operator= ( const DdeServiceList& );

public:
                    DdeServiceList( const String* = NULL );
                    ~DdeServiceList();

    StringList&     GetServices() { return aServices; }
};

// ----------------
// - DdeTopicList -
// ----------------

class DdeTopicList : public LinkHdl
{
    StringList      aTopics;
    void            Data( const DdeData* );

public:
                    DdeTopicList( const String& );
                    ~DdeTopicList();

    StringList&     GetTopics() { return aTopics; }
};

// ------------------
// - DdeTransaction -
// ------------------

class DdeTransaction : public LinkHdl
{
    friend class    DdeInternal;
    friend class    DdeConnection;

                    DdeTransaction( const DdeTransaction& );
    int             operator= ( const DdeTransaction& );

protected:
    DdeConnection&  rDde;
    DdeData         aDdeData;
    DdeString*      pName;
    short           nType;
    long            nId;
    long            nTime;
    Link            aData;
    Link            aDone;
    BOOL            bBusy;

                    DdeTransaction( DdeConnection&, const String&, long = 0 );

public:
                    ~DdeTransaction();

    BOOL            IsBusy() { return bBusy; }
    const String&   GetName();

    void            Execute();

    Link            ChangeDataHdl( const Link& );
    Link            GetDataHdl() const { return aData; }

    virtual void    Data( const DdeData* );

    Link            ChangeDoneHdl( const Link& );
    Link            GetDoneHdl() const { return aDone; }
    virtual void    Done();
};

inline Link DdeTransaction::ChangeDataHdl( const Link& rHdl )
{
    Link aOld = aData;
    aData = rHdl;
    return aOld;
}

inline Link DdeTransaction::ChangeDoneHdl( const Link& rHdl )
{
    Link aOld = aDone;
    aDone = rHdl;
    return aOld;
}

// -----------
// - DdeLink -
// -----------

class DdeLink : public DdeTransaction
{
    Link            aNotify;

public:
                    DdeLink( DdeConnection&, const String&, long = 0 );
                    ~DdeLink();

    Link            ChangeNotifyHdl( const Link& );
    Link            GetNotifyHdl() const { return aNotify; }
    virtual void    Notify();
};

inline Link DdeLink::ChangeNotifyHdl( const Link& rHdl )
{
    Link aOld = aNotify;
    aNotify = rHdl;
    return aOld;
}

// ---------------
// - DdeWarmLink -
// ---------------

class DdeWarmLink : public DdeLink
{
public:
            DdeWarmLink( DdeConnection&, const String&, long = 0 );
};

// --------------
// - DdeHotLink -
// --------------

class DdeHotLink : public DdeLink
{
public:
            DdeHotLink( DdeConnection&, const String&, long = 0 );
};

// --------------
// - DdeRequest -
// --------------

class DdeRequest : public DdeTransaction
{
public:
            DdeRequest( DdeConnection&, const String&, long = 0 );
};

// -----------
// - DdePoke -
// -----------

class DdePoke : public DdeTransaction
{
public:
            DdePoke( DdeConnection&, const String&, const char*, long,
                     ULONG = FORMAT_STRING, long = 0 );
            DdePoke( DdeConnection&, const String&, const DdeData&, long = 0 );
            DdePoke( DdeConnection&, const String&, const String&, long = 0 );
};

// --------------
// - DdeExecute -
// --------------

class DdeExecute : public DdeTransaction
{
public:
            DdeExecute( DdeConnection&, const String&, long = 0 );
};

// -----------------
// - DdeConnection -
// -----------------

class DdeConnection
{
    friend class    DdeInternal;
    friend class    DdeTransaction;
    static DdeConnections* pConnections;
    DdeTransactions aTransactions;
    DdeString*      pService;
    DdeString*      pTopic;
    DdeImp*         pImp;

                    DdeConnection( const DdeConnection& );
    int             operator= ( const DdeConnection& );

public:
                    DdeConnection( const String&, const String& );
                    ~DdeConnection();

    long            GetError();
    long            GetConvId();

    static const DdeConnections& GetConnections() { return *pConnections; }

    BOOL            IsConnected();

    const String&   GetServiceName();
    const String&   GetTopicName();
};

// -----------
// - DdeItem -
// -----------

class DdeItem
{
    friend class    DdeInternal;
    friend class    DdeTopic;
    DdeString*      pName;
    short           nMonitor;

public:
                    DdeItem( const char* );
                    DdeItem( const String& );
                    DdeItem( const DdeItem& );
                    ~DdeItem();

    const String&   GetName();
    short           GetLinks() { return nMonitor; }
};

// ------------
// - DdeTopic -
// ------------

class DdeTopic : public LinkHdl
{
    friend class    DdeInternal;
    friend class    DdeService;
    DdeString*      pName;
    String          aItem;
    DdeItems        aItems;
    Link            aConnectLink;
    Link            aDisconnectLink;
    Link            aGetLink;
    Link            aPutLink;
    Link            aExecLink;

                    DdeTopic( const DdeTopic& );
    int             operator= ( const DdeTopic& );

public:
                    DdeTopic( const String& );
                    ~DdeTopic();

    const String&   GetName();
    long            GetConvId();

    Link            ChangeConnectHdl( const Link& );
    Link            GetConnectHdl() const { return aConnectLink;  }
    virtual void    Connect( long );

    Link            ChangeDisconnectHdl( const Link& );
    Link            GetDisconnectHdl() const { return aDisconnectLink;  }
    virtual void    Disconnect( long );

    Link            ChangeGetHdl( const Link& );
    Link            GetGetHdl() const { return aGetLink;  }
    virtual DdeData* Get( ULONG );

    Link            ChangePutHdl( const Link& );
    Link            GetPutHdl() const { return aPutLink;  }
    virtual BOOL    Put( const DdeData* );

    Link            ChangeExecuteHdl( const Link& );
    Link            GetExecuteHdl() const { return aExecLink; }
    virtual BOOL    Execute( const String* );

    void            NotifyClient( const String& );
    BOOL            IsSystemTopic();

    void            AddItem( const DdeItem& );
    void            RemoveItem( const DdeItem& );
    const String&   GetCurItem() { return aItem;  }
    const DdeItems& GetItems()   { return aItems; }
};

inline Link DdeTopic::ChangeConnectHdl( const Link& rNew )
{
    Link aOld = aConnectLink;
    aConnectLink = rNew;
    return aOld;
}

inline Link DdeTopic::ChangeDisconnectHdl( const Link& rNew )
{
    Link aOld = aDisconnectLink;
    aDisconnectLink = rNew;
    return aOld;
}

inline Link DdeTopic::ChangeGetHdl( const Link& rNew )
{
    Link aOld = aGetLink;
    aGetLink = rNew;
    return aOld;
}

inline Link DdeTopic::ChangePutHdl( const Link& rNew )
{
    Link aOld = aPutLink;
    aPutLink = rNew;
    return aOld;
}

inline Link DdeTopic::ChangeExecuteHdl( const Link& rNew )
{
    Link aOld = aExecLink;
    aExecLink = rNew;
    return aOld;
}

// --------------
// - DdeService -
// --------------

class DdeService
{
    friend class    DdeInternal;
    DdeTopics       aTopics;
    DdeFormats      aFormats;
    DdeTopic*       pSysTopic;
    DdeString*      pName;
    ConvList*       pConv;
    short           nStatus;

    BOOL            HasCbFormat( short );
    String          Topics();
    String          Formats();
    String          SysItems();
    String          Status();

                    DdeService( const DdeService& );
    int             operator= ( const DdeService& );

public:
                    DdeService( const String& );
                    ~DdeService();

    const String&   GetName();
    short           GetError()              { return nStatus; }

    static DdeServices& GetServices();
    DdeTopics&      GetTopics()             { return aTopics;    }

    void            AddTopic( const DdeTopic& );
    void            RemoveTopic( const DdeTopic& );

    void            AddFormat( ULONG );
    void            RemoveFormat( ULONG );
    BOOL            HasFormat( ULONG );

    virtual BOOL    IsBusy();
    virtual String  GetHelp();
};

#endif // _SVDDE_HXX