samples/ipc/client.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        client.cpp
   3 // Purpose:     DDE sample: client
   4 // Author:      Julian Smart
   5 // Modified by:    Jurgen Doornik
   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 "ipcsetup.h"
  34
  35 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
  36 #include "mondrian.xpm"
  37 #endif
  38
  39 #include "wx/datetime.h"
  40 #include "client.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // wxWin macros
  44 // ----------------------------------------------------------------------------
  45
  46 IMPLEMENT_APP(MyApp)
  47
  48 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  49     EVT_MENU(wxID_EXIT, MyFrame::OnExit)
  50     EVT_CLOSE( MyFrame::OnClose )
  51     EVT_BUTTON( ID_START,       MyFrame::OnStart )
  52     EVT_CHOICE( ID_SERVERNAME,  MyFrame::OnServername )
  53     EVT_CHOICE( ID_HOSTNAME,    MyFrame::OnHostname )
  54     EVT_CHOICE( ID_TOPIC,       MyFrame::OnTopic )
  55     EVT_BUTTON( ID_DISCONNECT,  MyFrame::OnDisconnect )
  56     EVT_BUTTON( ID_STARTADVISE, MyFrame::OnStartAdvise )
  57     EVT_BUTTON( ID_STOPADVISE,  MyFrame::OnStopAdvise )
  58     EVT_BUTTON( ID_POKE,        MyFrame::OnPoke )
  59     EVT_BUTTON( ID_EXECUTE,     MyFrame::OnExecute )
  60     EVT_BUTTON( ID_REQUEST,     MyFrame::OnRequest )
  61 END_EVENT_TABLE()
  62
  63 // ----------------------------------------------------------------------------
  64 // globals
  65 // ----------------------------------------------------------------------------
  66
  67 // ============================================================================
  68 // implementation
  69 // ============================================================================
  70
  71 // ----------------------------------------------------------------------------
  72 // MyApp
  73 // ----------------------------------------------------------------------------
  74
  75 // The `main program' equivalent, creating the windows and returning the
  76 // main frame
  77 bool MyApp::OnInit()
  78 {
  79     // Create the main frame window
  80     m_frame = new MyFrame(NULL, _T("Client"));
  81     m_frame->Show(true);
  82
  83     return true;
  84 }
  85
  86 int MyApp::OnExit()
  87 {
  88
  89     return 0;
  90 }
  91
  92 // Define my frame constructor
  93 MyFrame::MyFrame(wxFrame *frame, const wxString& title)
  94         : wxFrame(frame, wxID_ANY, title, wxDefaultPosition, wxSize(400, 300))
  95 {
  96     // Give it an icon
  97     SetIcon(wxICON(mondrian));
  98
  99     // Make a menubar
 100     wxMenu *file_menu = new wxMenu;
 101
 102     file_menu->Append(wxID_EXIT, _T("&Quit\tCtrl-Q"));
 103
 104     wxMenuBar *menu_bar = new wxMenuBar;
 105
 106     menu_bar->Append(file_menu, _T("&File"));
 107
 108     // Associate the menu bar with the frame
 109     SetMenuBar(menu_bar);
 110
 111     // set a dialog background
 112     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE));
 113
 114     // add the controls to the frame
 115     wxString strs4[] =
 116     {
 117         IPC_SERVICE, _T("...")
 118     };
 119     wxString strs5[] =
 120     {
 121         IPC_HOST, _T("...")
 122     };
 123     wxString strs6[] =
 124     {
 125         IPC_TOPIC, _T("...")
 126     };
 127
 128     wxBoxSizer *item0 = new wxBoxSizer( wxVERTICAL );
 129
 130     wxBoxSizer *item1 = new wxBoxSizer( wxHORIZONTAL );
 131
 132     wxGridSizer *item2 = new wxGridSizer( 4, 0, 0 );
 133
 134     wxButton *item3 = new wxButton( this, ID_START, wxT("Connect to server"), wxDefaultPosition, wxDefaultSize, 0 );
 135     item2->Add( item3, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 136
 137     wxChoice *item5 = new wxChoice( this, ID_HOSTNAME, wxDefaultPosition, wxSize(100,-1), 2, strs5, 0 );
 138     item2->Add( item5, 0, wxALIGN_CENTER|wxALL, 5 );
 139
 140     wxChoice *item4 = new wxChoice( this, ID_SERVERNAME, wxDefaultPosition, wxSize(100,-1), 2, strs4, 0 );
 141     item2->Add( item4, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 142
 143     wxChoice *item6 = new wxChoice( this, ID_TOPIC, wxDefaultPosition, wxSize(100,-1), 2, strs6, 0 );
 144     item2->Add( item6, 0, wxALIGN_CENTER|wxALL, 5 );
 145
 146     wxButton *item7 = new wxButton( this, ID_DISCONNECT, wxT("Disconnect "), wxDefaultPosition, wxDefaultSize, 0 );
 147     item2->Add( item7, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 148
 149     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 150
 151     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 152
 153     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 154
 155     wxButton *item8 = new wxButton( this, ID_STARTADVISE, wxT("StartAdvise"), wxDefaultPosition, wxDefaultSize, 0 );
 156     item2->Add( item8, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 157
 158     wxButton *item9 = new wxButton( this, ID_STOPADVISE, wxT("StopAdvise"), wxDefaultPosition, wxDefaultSize, 0 );
 159     item2->Add( item9, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 160
 161     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 162
 163     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 164
 165     wxButton *item10 = new wxButton( this, ID_EXECUTE, wxT("Execute"), wxDefaultPosition, wxDefaultSize, 0 );
 166     item2->Add( item10, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 167
 168     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 169
 170     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 171
 172     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 173
 174     wxButton *item11 = new wxButton( this, ID_POKE, wxT("Poke"), wxDefaultPosition, wxDefaultSize, 0 );
 175     item2->Add( item11, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 176
 177     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 178
 179     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 180
 181     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 182
 183     wxButton *item12 = new wxButton( this, ID_REQUEST, wxT("Request"), wxDefaultPosition, wxDefaultSize, 0 );
 184     item2->Add( item12, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 185
 186     item2->Add( 20, 20, 0, wxALIGN_CENTER|wxALL, 5 );
 187
 188     item1->Add( item2, 1, wxALIGN_CENTER|wxALL, 5 );
 189
 190     item0->Add( item1, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 191
 192     wxStaticBox *item14 = new wxStaticBox( this, -1, wxT("Client log") );
 193     wxStaticBoxSizer *item13 = new wxStaticBoxSizer( item14, wxVERTICAL );
 194
 195     wxTextCtrl *item15 = new wxTextCtrl( this, ID_LOG, wxT(""), wxDefaultPosition, wxSize(500,140), wxTE_MULTILINE );
 196     item13->Add( item15, 1, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 197
 198     item0->Add( item13, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5 );
 199
 200     this->SetSizer( item0 );
 201     item0->SetSizeHints( this );
 202
 203     // status
 204     m_client = NULL;
 205     GetServername()->SetSelection(0);
 206     GetHostname()->SetSelection(0);
 207     GetTopic()->SetSelection(0);
 208     wxLogTextCtrl *logWindow = new wxLogTextCtrl(GetLog());
 209     delete wxLog::SetActiveTarget(logWindow);
 210     wxLogMessage(_T("Click on Connect to connect to the server"));
 211     Enable();
 212 }
 213
 214 void MyFrame::Enable()
 215 {
 216     GetStart()->Enable(m_client == NULL);
 217     GetServername()->Enable(m_client == NULL);
 218     GetHostname()->Enable(m_client == NULL);
 219     GetTopic()->Enable(m_client == NULL);
 220     GetDisconnect()->Enable(m_client && m_client->IsConnected() != NULL);
 221     GetStartAdvise()->Enable(m_client && m_client->IsConnected() != NULL);
 222     GetStopAdvise()->Enable(m_client && m_client->IsConnected() != NULL);
 223     GetExecute()->Enable(m_client && m_client->IsConnected() != NULL);
 224     GetPoke()->Enable(m_client && m_client->IsConnected() != NULL);
 225     GetRequest()->Enable(m_client && m_client->IsConnected() != NULL);
 226 }
 227
 228 void MyFrame::OnClose(wxCloseEvent& event)
 229 {
 230     if (m_client)
 231     {
 232         delete m_client;
 233         m_client = NULL;
 234     }
 235     event.Skip();
 236 }
 237
 238 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 239 {
 240     Close();
 241 }
 242
 243 void MyFrame::OnStart(wxCommandEvent& WXUNUSED(event))
 244 {
 245     // Connect to the client
 246     wxString servername = GetServername()->GetStringSelection();
 247     wxString hostname = GetHostname()->GetStringSelection();
 248     wxString topic = GetTopic()->GetStringSelection();
 249
 250     m_client = new MyClient;
 251     bool retval = m_client->Connect(hostname, servername, topic);
 252
 253     wxLogMessage(_T("Client host=\"%s\" port=\"%s\" topic=\"%s\" %s"),
 254         hostname.c_str(), servername.c_str(), topic.c_str(),
 255         retval ? _T("connected") : _T("failed to connect"));
 256
 257     if (!retval)
 258     {
 259         delete m_client;
 260         m_client = NULL;
 261     }
 262     Enable();
 263 }
 264
 265 void MyFrame::OnServername( wxCommandEvent& WXUNUSED(event) )
 266 {
 267     if (GetServername()->GetStringSelection() == _T("..."))
 268     {
 269         wxString s = wxGetTextFromUser(_T("Specify the name of the server"),
 270             _T("Server Name"), _(""), this);
 271         if (!s.IsEmpty() && s != IPC_SERVICE)
 272         {
 273             GetServername()->Insert(s, 0);
 274             GetServername()->SetSelection(0);
 275         }
 276     }
 277 }
 278
 279 void MyFrame::OnHostname( wxCommandEvent& WXUNUSED(event) )
 280 {
 281     if (GetHostname()->GetStringSelection() == _T("..."))
 282     {
 283         wxString s = wxGetTextFromUser(_T("Specify the name of the host (ignored under DDE)"),
 284             _T("Host Name"), _(""), this);
 285         if (!s.IsEmpty() && s != IPC_HOST)
 286         {
 287             GetHostname()->Insert(s, 0);
 288             GetHostname()->SetSelection(0);
 289         }
 290     }
 291 }
 292
 293 void MyFrame::OnTopic( wxCommandEvent& WXUNUSED(event) )
 294 {
 295     if (GetTopic()->GetStringSelection() == _T("..."))
 296     {
 297         wxString s = wxGetTextFromUser(_T("Specify the name of the topic"),
 298             _T("Topic Name"), _(""), this);
 299         if (!s.IsEmpty() && s != IPC_TOPIC)
 300         {
 301             GetTopic()->Insert(s, 0);
 302             GetTopic()->SetSelection(0);
 303         }
 304     }
 305 }
 306
 307 void MyFrame::OnDisconnect(wxCommandEvent& WXUNUSED(event))
 308 {
 309     Disconnect();
 310 }
 311
 312 void MyFrame::Disconnect()
 313 {
 314     delete m_client;
 315     m_client = NULL;
 316     Enable();
 317 }
 318
 319 void MyFrame::OnStartAdvise(wxCommandEvent& WXUNUSED(event))
 320 {
 321     m_client->GetConnection()->StartAdvise(_T("something"));
 322 }
 323
 324 void MyFrame::OnStopAdvise(wxCommandEvent& WXUNUSED(event))
 325 {
 326     m_client->GetConnection()->StopAdvise(_T("something"));
 327 }
 328
 329 void MyFrame::OnExecute(wxCommandEvent& WXUNUSED(event))
 330 {
 331     if (m_client->IsConnected())
 332     {
 333         wxString s = _T("Date");
 334
 335         m_client->GetConnection()->Execute((wxChar *)s.c_str());
 336         m_client->GetConnection()->Execute((wxChar *)s.c_str(), (s.Length() + 1) * sizeof(wxChar));
 337 #if wxUSE_DDE_FOR_IPC
 338         wxLogMessage(_T("DDE Execute can only be used to send text strings, not arbitrary data.\nThe type argument will be ignored, text truncated, converted to Unicode and null terminated."));
 339 #endif
 340         char bytes[3];
 341         bytes[0] = '1'; bytes[1] = '2'; bytes[2] = '3';
 342         m_client->GetConnection()->Execute((wxChar *)bytes, 3, wxIPC_PRIVATE);
 343     }
 344 }
 345
 346 void MyFrame::OnPoke(wxCommandEvent& WXUNUSED(event))
 347 {
 348     if (m_client->IsConnected())
 349     {
 350         wxString s = wxDateTime::Now().Format();
 351         m_client->GetConnection()->Poke(_T("Date"), (wxChar *)s.c_str());
 352         s = wxDateTime::Now().FormatTime() + _T(" ") + wxDateTime::Now().FormatDate();
 353         m_client->GetConnection()->Poke(_T("Date"), (wxChar *)s.c_str(), (s.Length() + 1) * sizeof(wxChar));
 354         char bytes[3];
 355         bytes[0] = '1'; bytes[1] = '2'; bytes[2] = '3';
 356         m_client->GetConnection()->Poke(_T("bytes[3]"), (wxChar *)bytes, 3, wxIPC_PRIVATE);
 357     }
 358 }
 359
 360 void MyFrame::OnRequest(wxCommandEvent& WXUNUSED(event))
 361 {
 362     if (m_client->IsConnected())
 363     {
 364         int size;
 365         m_client->GetConnection()->Request(_T("Date"));
 366         m_client->GetConnection()->Request(_T("Date+len"), &size);
 367         m_client->GetConnection()->Request(_T("bytes[3]"), &size, wxIPC_PRIVATE);
 368     }
 369 }
 370
 371 // ----------------------------------------------------------------------------
 372 // MyClient
 373 // ----------------------------------------------------------------------------
 374 MyClient::MyClient() : wxClient()
 375 {
 376     m_connection = NULL;
 377 }
 378
 379 bool MyClient::Connect(const wxString& sHost, const wxString& sService, const wxString& sTopic)
 380 {
 381     // suppress the log messages from MakeConnection()
 382     wxLogNull nolog;
 383
 384     m_connection = (MyConnection *)MakeConnection(sHost, sService, sTopic);
 385     return m_connection    != NULL;
 386 }
 387
 388 wxConnectionBase *MyClient::OnMakeConnection()
 389 {
 390     return new MyConnection;
 391 }
 392
 393 void MyClient::Disconnect()
 394 {
 395     if (m_connection)
 396     {
 397         m_connection->Disconnect();
 398         delete m_connection;
 399         m_connection = NULL;
 400         wxGetApp().GetFrame()->Enable();
 401         wxLogMessage(_T("Client disconnected from server"));
 402     }
 403 }
 404
 405 MyClient::~MyClient()
 406 {
 407     Disconnect();
 408 }
 409
 410 // ----------------------------------------------------------------------------
 411 // MyConnection
 412 // ----------------------------------------------------------------------------
 413
 414 void MyConnection::Log(const wxString& command, const wxString& topic,
 415     const wxString& item, wxChar *data, int size, wxIPCFormat format)
 416 {
 417     wxString s;
 418     if (topic.IsEmpty() && item.IsEmpty())
 419         s.Printf(_T("%s("), command.c_str());
 420     else if (topic.IsEmpty())
 421         s.Printf(_T("%s(item=\"%s\","), command.c_str(), item.c_str());
 422     else if (item.IsEmpty())
 423         s.Printf(_T("%s(topic=\"%s\","), command.c_str(), topic.c_str());
 424     else
 425         s.Printf(_T("%s(topic=\"%s\",item=\"%s\","), command.c_str(), topic.c_str(), item.c_str());
 426
 427     if (format == wxIPC_TEXT || format == wxIPC_UNICODETEXT)
 428         wxLogMessage(_T("%s\"%s\",%d)"), s.c_str(), data, size);
 429     else if (format == wxIPC_PRIVATE)
 430     {
 431         if (size == 3)
 432         {
 433             char *bytes = (char *)data;
 434             wxLogMessage(_T("%s'%c%c%c',%d)"), s.c_str(), bytes[0], bytes[1], bytes[2], size);
 435         }
 436         else
 437             wxLogMessage(_T("%s...,%d)"), s.c_str(), size);
 438     }
 439     else if (format == wxIPC_INVALID)
 440         wxLogMessage(_T("%s[invalid data],%d)"), s.c_str(), size);
 441 }
 442
 443 bool MyConnection::OnAdvise(const wxString& topic, const wxString& item, wxChar *data,
 444     int size, wxIPCFormat format)
 445 {
 446     Log(_T("OnAdvise"), topic, item, data, size, format);
 447     return true;
 448 }
 449
 450 bool MyConnection::OnDisconnect()
 451 {
 452     wxLogMessage(_T("OnDisconnect()"));
 453     wxGetApp().GetFrame()->Disconnect();
 454     return true;
 455 }
 456
 457 bool MyConnection::Execute(const wxChar *data, int size, wxIPCFormat format)
 458 {
 459     Log(_T("Execute"), _T(""), _T(""), (wxChar *)data, size, format);
 460     bool retval = wxConnection::Execute(data, size, format);
 461     if (!retval)
 462         wxLogMessage(_T("Execute failed!"));
 463     return retval;
 464 }
 465
 466 wxChar *MyConnection::Request(const wxString& item, int *size, wxIPCFormat format)
 467 {
 468     wxChar *data =  wxConnection::Request(item, size, format);
 469     Log(_T("Request"), _T(""), item, data, size ? *size : -1, format);
 470     return data;
 471 }
 472
 473 bool MyConnection::Poke(const wxString& item, wxChar *data, int size, wxIPCFormat format)
 474 {
 475     Log(_T("Poke"), _T(""), item, data, size, format);
 476     return wxConnection::Poke(item, data, size, format);
 477 }
 478