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