samples/ipc/server.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        server.h
   3 // Purpose:     DDE sample: server
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     25/01/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "connection.h"
  13
  14 enum
  15 {
  16     ID_START = 10000,
  17     ID_DISCONNECT,
  18     ID_ADVISE,
  19     ID_SERVERNAME,
  20 };
  21
  22 // Define a new application
  23 class MyServer;
  24 class MyFrame;
  25
  26 class MyApp : public wxApp
  27 {
  28 public:
  29     virtual bool OnInit();
  30     MyFrame *GetFrame() { return m_frame; }
  31
  32 protected:
  33     MyFrame *m_frame;
  34 };
  35
  36 DECLARE_APP(MyApp)
  37
  38 // Define a new frame
  39 class MyFrame : public wxFrame
  40 {
  41 public:
  42     MyFrame(wxFrame *frame, const wxString& title);
  43
  44     void OnClose(wxCloseEvent& event);
  45
  46     void UpdateUI();
  47     void Disconnect();
  48
  49 protected:
  50     wxButton* GetStart()  { return (wxButton*) FindWindow( ID_START ); }
  51     wxChoice* GetServername()  { return (wxChoice*) FindWindow( ID_SERVERNAME ); }
  52     wxButton* GetDisconnect()  { return (wxButton*) FindWindow( ID_DISCONNECT ); }
  53     wxButton* GetAdvise()  { return (wxButton*) FindWindow( ID_ADVISE ); }
  54
  55
  56     MyServer *m_server;
  57
  58     void OnStart( wxCommandEvent &event );
  59     void OnServerName( wxCommandEvent &event );
  60     void OnDisconnect( wxCommandEvent &event );
  61     void OnAdvise( wxCommandEvent &event );
  62
  63     DECLARE_EVENT_TABLE()
  64 };
  65
  66 class MyConnection : public MyConnectionBase
  67 {
  68 public:
  69     virtual bool OnExecute(const wxString& topic, const void *data, size_t size, wxIPCFormat format);
  70     virtual const void *OnRequest(const wxString& topic, const wxString& item, size_t *size, wxIPCFormat format);
  71     virtual bool OnPoke(const wxString& topic, const wxString& item, const void *data, size_t size, wxIPCFormat format);
  72     virtual bool OnStartAdvise(const wxString& topic, const wxString& item);
  73     virtual bool OnStopAdvise(const wxString& topic, const wxString& item);
  74     virtual bool DoAdvise(const wxString& item, const void *data, size_t size, wxIPCFormat format);
  75     virtual bool OnDisconnect();
  76
  77     // topic for which we advise the client or empty if none
  78     wxString m_advise;
  79
  80 protected:
  81     // the data returned by last OnRequest(): we keep it in this buffer to
  82     // ensure that the pointer we return from OnRequest() stays valid
  83     wxCharBuffer m_requestData;
  84 };
  85
  86 class MyServer : public wxServer
  87 {
  88 public:
  89     MyServer();
  90     virtual ~MyServer();
  91
  92     void Disconnect();
  93     bool IsConnected() { return m_connection != NULL; }
  94     MyConnection *GetConnection() { return m_connection; }
  95
  96     void Advise();
  97     bool CanAdvise() { return m_connection && !m_connection->m_advise.empty(); }
  98
  99     virtual wxConnectionBase *OnAcceptConnection(const wxString& topic);
 100
 101 protected:
 102     MyConnection *m_connection;
 103 };
 104