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