include/wx/ipcbase.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        ipcbase.h
   3 // Purpose:     Base classes for IPC
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     4/1/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_IPCBASEH__
  13 #define _WX_IPCBASEH__
  14
  15 #ifdef __GNUG__
  16 #pragma interface "ipcbase.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/object.h"
  21 #include "wx/string.h"
  22
  23 enum wxIPCFormat
  24 {
  25   wxIPC_INVALID =          0,
  26   wxIPC_TEXT =             1,  /* CF_TEXT */
  27   wxIPC_BITMAP =           2,  /* CF_BITMAP */
  28   wxIPC_METAFILE =         3,  /* CF_METAFILEPICT */
  29   wxIPC_SYLK =             4,
  30   wxIPC_DIF =              5,
  31   wxIPC_TIFF =             6,
  32   wxIPC_OEMTEXT =          7,  /* CF_OEMTEXT */
  33   wxIPC_DIB =              8,  /* CF_DIB */
  34   wxIPC_PALETTE =          9,
  35   wxIPC_PENDATA =          10,
  36   wxIPC_RIFF =             11,
  37   wxIPC_WAVE =             12,
  38   wxIPC_UNICODETEXT =      13,
  39   wxIPC_ENHMETAFILE =      14,
  40   wxIPC_FILENAME =         15, /* CF_HDROP */
  41   wxIPC_LOCALE =           16,
  42   wxIPC_PRIVATE =          20
  43 };
  44
  45 class WXDLLEXPORT wxDDEServerBase;
  46 class WXDLLEXPORT wxDDEClientBase;
  47
  48 class WXDLLEXPORT wxConnectionBase: public wxObject
  49 {
  50   DECLARE_CLASS(wxConnectionBase)
  51  public:
  52   inline wxConnectionBase(void) {}
  53   inline ~wxConnectionBase(void) {}
  54
  55   // Calls that CLIENT can make
  56   virtual bool Execute(wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT ) = 0;
  57   virtual bool Execute(const wxString& str) { return Execute(WXSTRINGCAST str, -1, wxIPC_TEXT); }
  58   virtual char *Request(const wxString& item, int *size = (int *) NULL, wxIPCFormat format = wxIPC_TEXT) = 0;
  59   virtual bool Poke(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT) = 0;
  60   virtual bool StartAdvise(const wxString& item) = 0;
  61   virtual bool StopAdvise(const wxString& item) = 0;
  62
  63   // Calls that SERVER can make
  64   virtual bool Advise(const wxString& item, wxChar *data, int size = -1, wxIPCFormat format = wxIPC_TEXT) = 0;
  65
  66   // Calls that both can make
  67   virtual bool Disconnect(void) = 0;
  68
  69   // Callbacks to SERVER - override at will
  70   virtual bool OnExecute( const wxString& WXUNUSED(topic), char *WXUNUSED(data), int WXUNUSED(size),
  71                           int WXUNUSED(format) ) { return FALSE; };
  72   virtual wxChar *OnRequest( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item),
  73                              int *WXUNUSED(size), int WXUNUSED(format) ) { return (wxChar *) NULL; };
  74   virtual bool OnPoke( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item), wxChar *WXUNUSED(data),
  75                        int WXUNUSED(size), int WXUNUSED(format) ) { return FALSE; };
  76   virtual bool OnStartAdvise( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item) )
  77                               { return FALSE; };
  78   virtual bool OnStopAdvise( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item) )
  79                              { return FALSE; };
  80
  81   // Callbacks to CLIENT - override at will
  82   virtual bool OnAdvise( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item), wxChar *WXUNUSED(data),
  83                          int WXUNUSED(size), int WXUNUSED(format) ) { return FALSE; };
  84
  85   // Callbacks to BOTH
  86
  87   // Default behaviour is to delete connection and return TRUE
  88   virtual bool OnDisconnect(void) = 0;
  89 };
  90
  91 class WXDLLEXPORT wxServerBase: public wxObject
  92 {
  93   DECLARE_CLASS(wxServerBase)
  94  public:
  95
  96   inline wxServerBase(void) {}
  97   inline ~wxServerBase(void) {};
  98   virtual bool Create(const wxString& serverName) = 0; // Returns FALSE if can't create server (e.g. port
  99                                   // number is already in use)
 100   virtual wxConnectionBase *OnAcceptConnection(const wxString& topic) = 0;
 101
 102 };
 103
 104 class WXDLLEXPORT wxClientBase: public wxObject
 105 {
 106   DECLARE_CLASS(wxClientBase)
 107  public:
 108   inline wxClientBase(void) {};
 109   inline ~wxClientBase(void) {};
 110   virtual bool ValidHost(const wxString& host) = 0;
 111   virtual wxConnectionBase *MakeConnection(const wxString& host, const wxString& server, const wxString& topic) = 0;
 112                                                 // Call this to make a connection.
 113                                                 // Returns NULL if cannot.
 114   virtual wxConnectionBase *OnMakeConnection(void) = 0; // Tailor this to return own connection.
 115
 116 };
 117
 118 #endif
 119     // _WX_IPCBASEH__