samples/ipc/server.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        server.cpp
   3 // Purpose:     IPC 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 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/wx.h"
  29 #endif
  30
  31 // Settings common to both executables: determines whether
  32 // we're using TCP/IP or real DDE.
  33 #include "ddesetup.h"
  34
  35 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
  36     #include "mondrian.xpm"
  37 #endif
  38
  39 #include "server.h"
  40
  41 // ----------------------------------------------------------------------------
  42 // wxWin macros
  43 // ----------------------------------------------------------------------------
  44
  45 IMPLEMENT_APP(MyApp)
  46
  47 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  48     EVT_MENU   (SERVER_EXIT, MyFrame::OnExit)
  49     EVT_LISTBOX(SERVER_LISTBOX, MyFrame::OnListBoxClick)
  50 END_EVENT_TABLE()
  51
  52 BEGIN_EVENT_TABLE(IPCDialogBox, wxDialog)
  53     EVT_BUTTON(SERVER_QUIT_BUTTON, IPCDialogBox::OnQuit)
  54 END_EVENT_TABLE()
  55
  56 // ----------------------------------------------------------------------------
  57 // global variables
  58 // ----------------------------------------------------------------------------
  59
  60 MyConnection *the_connection = NULL;
  61
  62 // ============================================================================
  63 // implementation
  64 // ============================================================================
  65
  66 // ----------------------------------------------------------------------------
  67 // MyApp
  68 // ----------------------------------------------------------------------------
  69
  70 bool MyApp::OnInit()
  71 {
  72     // Create the main frame window
  73     (new MyFrame(NULL, "Server"))->Show(TRUE);
  74
  75     // service name (DDE classes) or port number (TCP/IP based classes)
  76     wxString service = IPC_SERVICE;
  77
  78     if (argc > 1)
  79         service = argv[1];
  80
  81     // Create a new server
  82     m_server = new MyServer;
  83     m_server->Create(service);
  84
  85     return TRUE;
  86 }
  87
  88 int MyApp::OnExit()
  89 {
  90     delete m_server;
  91
  92     return 0;
  93 }
  94
  95 // ----------------------------------------------------------------------------
  96 // MyFrame
  97 // ----------------------------------------------------------------------------
  98
  99 // Define my frame constructor
 100 MyFrame::MyFrame(wxFrame *frame, const wxString& title)
 101        : wxFrame(frame, -1, title, wxDefaultPosition, wxSize(350, 250))
 102 {
 103     CreateStatusBar();
 104
 105     // Give it an icon
 106     SetIcon(wxICON(mondrian));
 107
 108     // Make a menubar
 109     wxMenu *file_menu = new wxMenu;
 110
 111     file_menu->Append(SERVER_EXIT, "&Quit\tCtrl-Q");
 112
 113     wxMenuBar *menu_bar = new wxMenuBar;
 114
 115     menu_bar->Append(file_menu, "&File");
 116
 117     // Associate the menu bar with the frame
 118     SetMenuBar(menu_bar);
 119
 120     // Make a listbox
 121     wxListBox *list = new wxListBox(this, SERVER_LISTBOX, wxPoint(5, 5));
 122     list->Append("Apple");
 123     list->Append("Pear");
 124     list->Append("Orange");
 125     list->Append("Banana");
 126     list->Append("Fruit");
 127 }
 128
 129 // Set the client process's listbox to this item
 130 void MyFrame::OnListBoxClick(wxCommandEvent& WXUNUSED(event))
 131 {
 132     wxListBox* listBox = (wxListBox*) FindWindow(SERVER_LISTBOX);
 133     if (listBox)
 134     {
 135         wxString value = listBox->GetStringSelection();
 136
 137         /* Because the_connection only holds one connection, in this sample only
 138            one connection can receive advise messages */
 139         if (the_connection)
 140         {
 141             the_connection->Advise(IPC_ADVISE_NAME, (wxChar *)value.c_str());
 142         }
 143     }
 144 }
 145
 146 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 147 {
 148     Close(TRUE);
 149 }
 150
 151 // ----------------------------------------------------------------------------
 152 // IPCDialogBox
 153 // ----------------------------------------------------------------------------
 154
 155 IPCDialogBox::IPCDialogBox(wxWindow *parent, const wxString& title,
 156                            const wxPoint& pos, const wxSize& size,
 157                            MyConnection *connection)
 158             : wxDialog(parent, -1, title, pos, size)
 159 {
 160     m_connection = connection;
 161     (void)new wxButton(this, SERVER_QUIT_BUTTON, "Quit this connection",
 162                        wxPoint(5, 5));
 163     Fit();
 164 }
 165
 166 IPCDialogBox::~IPCDialogBox( )
 167 {
 168     // wxWindows exit code destroys dialog before destroying the connection in
 169     // OnExit, so make sure connection won't try to delete the dialog later.
 170     if (m_connection)
 171         m_connection->dialog = NULL;
 172 }
 173
 174 void IPCDialogBox::OnQuit(wxCommandEvent& event)
 175 {
 176     m_connection->Disconnect();
 177     delete m_connection;
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // MyServer
 182 // ----------------------------------------------------------------------------
 183
 184 wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
 185 {
 186     if ( topic == IPC_TOPIC )
 187         return new MyConnection();
 188
 189     // unknown topic
 190     return NULL;
 191 }
 192
 193 // ----------------------------------------------------------------------------
 194 // MyConnection
 195 // ----------------------------------------------------------------------------
 196
 197 MyConnection::MyConnection()
 198             : wxConnection()
 199 {
 200     dialog = new IPCDialogBox(wxTheApp->GetTopWindow(), "Connection",
 201                               wxPoint(100, 100), wxSize(500, 500), this);
 202     dialog->Show(TRUE);
 203     the_connection = this;
 204 }
 205
 206 MyConnection::~MyConnection()
 207 {
 208     if (the_connection)
 209     {
 210         if (dialog)
 211         {
 212             dialog->m_connection = NULL;
 213             dialog->Destroy();
 214         }
 215         the_connection = NULL;
 216     }
 217 }
 218
 219 bool MyConnection::OnExecute(const wxString& WXUNUSED(topic),
 220                              char *data,
 221                              int WXUNUSED(size),
 222                              wxIPCFormat WXUNUSED(format))
 223 {
 224     wxLogStatus(wxT("Execute command: %s"), data);
 225     return TRUE;
 226 }
 227
 228 bool MyConnection::OnPoke(const wxString& WXUNUSED(topic),
 229                           const wxString& item,
 230                           char *data,
 231                           int WXUNUSED(size),
 232                           wxIPCFormat WXUNUSED(format))
 233 {
 234     wxLogStatus(wxT("Poke command: %s = %s"), item.c_str(), data);
 235     return TRUE;
 236 }
 237
 238 char *MyConnection::OnRequest(const wxString& WXUNUSED(topic),
 239                               const wxString& WXUNUSED(item),
 240                               int * WXUNUSED(size),
 241                               wxIPCFormat WXUNUSED(format))
 242 {
 243     return "Here, have your data, client!";
 244 }
 245
 246 bool MyConnection::OnStartAdvise(const wxString& WXUNUSED(topic),
 247                                  const wxString& WXUNUSED(item))
 248 {
 249     return TRUE;
 250 }
 251