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 class WXDLLEXPORT wxDDEServerBase;
  24 class WXDLLEXPORT wxDDEClientBase;
  25
  26 class WXDLLEXPORT wxConnectionBase: public wxObject
  27 {
  28   DECLARE_CLASS(wxConnectionBase)
  29  public:
  30   inline wxConnectionBase(void) {}
  31   inline ~wxConnectionBase(void) {}
  32
  33   // Calls that CLIENT can make
  34   virtual bool Execute(char *data, int size = -1, wxDataFormat format = wxDF_TEXT ) = 0;
  35   virtual bool Execute(const wxString& str) { return Execute((char *)(const char *)str, -1, wxDF_TEXT); }
  36   virtual char *Request(const wxString& item, int *size = (int *) NULL, wxDataFormat format = wxDF_TEXT) = 0;
  37   virtual bool Poke(const wxString& item, char *data, int size = -1, wxDataFormat format = wxDF_TEXT) = 0;
  38   virtual bool StartAdvise(const wxString& item) = 0;
  39   virtual bool StopAdvise(const wxString& item) = 0;
  40
  41   // Calls that SERVER can make
  42   virtual bool Advise(const wxString& item, char *data, int size = -1, wxDataFormat format = wxDF_TEXT) = 0;
  43
  44   // Calls that both can make
  45   virtual bool Disconnect(void) = 0;
  46
  47   // Callbacks to SERVER - override at will
  48   virtual bool OnExecute( const wxString& WXUNUSED(topic), char *WXUNUSED(data), int WXUNUSED(size),
  49                           int WXUNUSED(format) ) { return FALSE; };
  50   virtual char *OnRequest( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item),
  51                            int *WXUNUSED(size), int WXUNUSED(format) ) { return (char *) NULL; };
  52   virtual bool OnPoke( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item), char *WXUNUSED(data),
  53                        int WXUNUSED(size), int WXUNUSED(format) ) { return FALSE; };
  54   virtual bool OnStartAdvise( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item) )
  55                               { return FALSE; };
  56   virtual bool OnStopAdvise( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item) )
  57                              { return FALSE; };
  58
  59   // Callbacks to CLIENT - override at will
  60   virtual bool OnAdvise( const wxString& WXUNUSED(topic), const wxString& WXUNUSED(item), char *WXUNUSED(data),
  61                          int WXUNUSED(size), int WXUNUSED(format) ) { return FALSE; };
  62
  63   // Callbacks to BOTH
  64
  65   // Default behaviour is to delete connection and return TRUE
  66   virtual bool OnDisconnect(void) = 0;
  67 };
  68
  69 class WXDLLEXPORT wxServerBase: public wxObject
  70 {
  71   DECLARE_CLASS(wxServerBase)
  72  public:
  73
  74   inline wxServerBase(void) {}
  75   inline ~wxServerBase(void) {};
  76   virtual bool Create(const wxString& serverName) = 0; // Returns FALSE if can't create server (e.g. port
  77                                   // number is already in use)
  78   virtual wxConnectionBase *OnAcceptConnection(const wxString& topic) = 0;
  79
  80 };
  81
  82 class WXDLLEXPORT wxClientBase: public wxObject
  83 {
  84   DECLARE_CLASS(wxClientBase)
  85  public:
  86   inline wxClientBase(void) {};
  87   inline ~wxClientBase(void) {};
  88   virtual bool ValidHost(const wxString& host) = 0;
  89   virtual wxConnectionBase *MakeConnection(const wxString& host, const wxString& server, const wxString& topic) = 0;
  90                                                 // Call this to make a connection.
  91                                                 // Returns NULL if cannot.
  92   virtual wxConnectionBase *OnMakeConnection(void) = 0; // Tailor this to return own connection.
  93
  94 };
  95
  96 #endif
  97     // _WX_IPCBASEH__