utils/helpview/src/remhelp.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        remhelp.cpp
   3 // Purpose:     Remote help controller class
   4 // Author:      Eric Dowty
   5 // Modified by:
   6 // Created:     2002-11-18
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/wx.h"
  21 #endif
  22
  23 #include <math.h>
  24
  25 #include "wx/process.h"
  26 #include "wx/confbase.h"
  27
  28 // Settings common to both executables: determines whether
  29 // we're using TCP/IP or real DDE.
  30
  31 //#include "ddesetup.h"
  32 //#define wxUSE_DDE_FOR_IPC 0
  33
  34 #ifndef wxHAS_IMAGES_IN_RESOURCES
  35 #include "mondrian.xpm"
  36 #endif
  37
  38 #include "remhelp.h"
  39 #include "client.h"
  40
  41 #if !defined(USE_REMOTE)
  42 #include <wx/html/helpctrl.h>
  43 #endif
  44
  45 //////////////////
  46 //////////////////
  47 // helper classes
  48
  49 rhhcClient::rhhcClient( bool *isconn_a )
  50 {
  51     isconn_2 = isconn_a;
  52 }
  53
  54 wxConnectionBase *rhhcClient::OnMakeConnection()
  55 {
  56     return new rhhcConnection( isconn_2 );
  57 }
  58
  59 rhhcConnection::rhhcConnection( bool *isconn_a )
  60 : wxConnection()
  61 {
  62     isconn_3 = isconn_a;
  63     *isconn_3 = true;
  64 }
  65
  66 rhhcConnection::~rhhcConnection()
  67 {
  68     *isconn_3 = false;
  69 }
  70
  71 bool rhhcConnection::OnAdvise(const wxString& topic, const wxString& item, char *data, int size, wxIPCFormat format)
  72 {
  73     return true;
  74 }
  75
  76 bool rhhcConnection::OnDisconnect()
  77 {
  78     *isconn_3 = false;
  79
  80     return wxConnection::OnDisconnect();
  81 }
  82
  83 //////////////////////////////////////////
  84 /////////////////////////////////////////
  85
  86 // wxRemoteHtmlHelpController class
  87
  88 IMPLEMENT_CLASS(wxRemoteHtmlHelpController, wxHelpControllerBase)
  89
  90 wxRemoteHtmlHelpController::wxRemoteHtmlHelpController(int style )
  91 {
  92     m_style = style;
  93     m_connection = NULL;
  94     m_client  = NULL;
  95     m_pid = 0;
  96     isconn_1 = false;
  97     m_process = NULL;
  98
  99     // defaults
 100     //
 101     // server app is assumed to be local
 102     //
 103     // for MSW (DDE classes), a_service is 'service name', apparently an arbitrary string
 104     // for Unix, should be a valid file name (for a nonexistent file)
 105     // for nonMSW, nonUnix, must be port number, for example "4242" (TCP/IP based classes)
 106     // should be unique to the client app
 107
 108     wxString thename = wxGetApp().GetAppName();
 109 #if defined(__WXMSW__)
 110     m_appname = wxT("helpview.exe");
 111     m_service = thename + wxString(wxT("_helpservice"));
 112 #elif defined(__UNIX__)
 113     m_appname = wxT("./helpview");
 114     m_service = wxT("/tmp/") + thename + wxString(wxT("_helpservice"));
 115 #else
 116     m_appname = wxT("./helpview");
 117     m_service = wxT("4242");
 118 #endif
 119
 120     m_book = thename + wxT(".hhp");  // or .htb or .zip
 121     m_windowname = thename + wxT(" Help: %s");
 122     //underscores for spaces
 123     m_windowname.Replace( wxT(" "), wxT("_") );
 124 }
 125
 126 void wxRemoteHtmlHelpController::SetService(wxString& a_service)
 127 {
 128     m_service = a_service;
 129 }
 130 void wxRemoteHtmlHelpController::SetServer(wxString& a_appname)
 131 {
 132     m_appname = a_appname;
 133 }
 134
 135 void wxRemoteHtmlHelpController::OnQuit()
 136 {
 137     //kill the Server here?
 138     //this function is not called ?
 139 }
 140
 141 wxRemoteHtmlHelpController::~wxRemoteHtmlHelpController()
 142 {
 143     if ( isconn_1 )
 144     {
 145         // if (!m_connection->Poke( wxT("--YouAreDead"), wxT("") ) )
 146         // wxLogError(wxT("wxRemoteHtmlHelpController - YouAreDead Failed"));
 147
 148         // Kill the server.  This could be an option.
 149         Quit();
 150
 151         m_connection->Disconnect();
 152         delete m_connection;
 153
 154         delete m_process;
 155         m_process = NULL;
 156     }
 157     if( m_client )
 158         delete m_client; //should be automatic?
 159
 160 }
 161
 162 bool wxRemoteHtmlHelpController::DoConnection()
 163 {
 164     wxString cmd, blank;
 165     int nsleep;
 166
 167     blank = wxT("  ");
 168
 169     // ignored under DDE, host name in TCP/IP based classes
 170     wxString hostName = wxT("localhost");
 171
 172     // Create a new client
 173     if( !m_client ) m_client = new rhhcClient(&isconn_1);
 174
 175     nsleep = 0;
 176
 177     // suppress the log messages from MakeConnection()
 178     {
 179         wxLogNull nolog;
 180
 181         //first try to connect assuming server is running
 182         if( !isconn_1 )
 183             m_connection = (rhhcConnection *)m_client->MakeConnection(hostName, m_service, wxT("HELP") );
 184
 185         //if not, start server
 186         if( !isconn_1 ) {
 187
 188             wxString stylestr;
 189             stylestr.Printf( wxT("--Style%d"), m_style );
 190
 191             cmd = m_appname + blank + m_service + blank + m_windowname + blank + m_book + blank + stylestr;
 192
 193             m_process = new wxProcess(NULL);
 194             m_pid = wxExecute( cmd, false, m_process );
 195             // leaks - wxExecute itself (if not deleted) and in wxExecute at
 196             // wxExecuteData *data = new wxExecuteData;
 197             if( m_pid <= 0 ) {
 198                 wxLogError( wxT("wxRemoteHtmlHelpController - Failed to start Help server") );
 199                 return false;
 200             }
 201         }
 202
 203         while ( !isconn_1 )
 204         {
 205             //try every second for a while, then leave it to user
 206             wxSleep(1);
 207             if( nsleep > 4 ) {
 208                 if ( wxMessageBox( wxT("Failed to make connection to Help server.\nRetry?") ,
 209                                    wxT("wxRemoteHtmlHelpController Error"),
 210                                    wxICON_ERROR | wxYES_NO | wxCANCEL ) != wxYES )
 211                 {
 212                     // no server
 213                     return false;
 214                 }
 215             }
 216             nsleep++;
 217
 218             m_connection = (rhhcConnection *)m_client->MakeConnection(hostName, m_service, wxT("HELP") );
 219         }
 220     }
 221
 222     if (!m_connection->StartAdvise(wxT("Item"))) {
 223         wxLogError(wxT("wxRemoteHtmlHelpController - StartAdvise failed") );
 224         return false;
 225     }
 226
 227     return true;
 228 }
 229
 230 bool wxRemoteHtmlHelpController::LoadFile(const wxString& WXUNUSED(file))
 231 {
 232     return true;
 233 }
 234 bool wxRemoteHtmlHelpController::DisplaySection(int sectionNo)
 235 {
 236     Display(sectionNo);
 237     return true;
 238 }
 239 bool wxRemoteHtmlHelpController::DisplayBlock(long blockNo)
 240 {
 241     return DisplaySection((int)blockNo);
 242 }
 243
 244 bool wxRemoteHtmlHelpController::Quit()
 245 {
 246     //this code from exec sample - branches left in for testing
 247     // sig = 3, 6, 9 or 12 all kill server with no apparent problem
 248     // but give error message on MSW - timout?
 249     int sig = 15;   //3 = quit; 6 = abort; 9 = kill;  15 = terminate
 250
 251 /*
 252                     switch ( sig )
 253                     {
 254                     default:
 255                     wxFAIL_MSG( wxT("unexpected return value") );
 256                     // fall through
 257
 258                       case -1:
 259                       // cancelled
 260                       return false;
 261
 262                         case wxSIGNONE:
 263                         case wxSIGHUP:
 264                         case wxSIGINT:
 265                         case wxSIGQUIT:
 266                         case wxSIGILL:
 267                         case wxSIGTRAP:
 268                         case wxSIGABRT:
 269                         case wxSIGEMT:
 270                         case wxSIGFPE:
 271                         case wxSIGKILL:
 272                         case wxSIGBUS:
 273                         case wxSIGSEGV:
 274                         case wxSIGSYS:
 275                         case wxSIGPIPE:
 276                         case wxSIGALRM:
 277                         case wxSIGTERM:
 278                         break;
 279                         }
 280 */
 281
 282     if ( sig == 0 )
 283     {
 284         if ( wxProcess::Exists(m_pid) )
 285         {
 286             wxLogStatus(wxT("Process %ld is running."), m_pid);
 287         }
 288         else
 289         {
 290             wxLogStatus(wxT("No process with pid = %ld."), m_pid);
 291         }
 292     }
 293     else // not SIGNONE
 294     {
 295         wxKillError rc = wxProcess::Kill(m_pid, (wxSignal)sig);
 296         if ( rc == wxKILL_OK )
 297         {
 298             wxLogStatus(wxT("Process %ld killed with signal %d."), m_pid, sig);
 299         }
 300         else
 301         {
 302             static const wxChar *errorText[] =
 303             {
 304                 wxT(""), // no error
 305                     wxT("signal not supported"),
 306                     wxT("permission denied"),
 307                     wxT("no such process"),
 308                     wxT("unspecified error"),
 309             };
 310
 311             // sig = 3, 6, 9 or 12 all kill server with no apparent problem
 312             // but give error message on MSW - timout?
 313             //
 314             //wxLogError(wxT("Failed to kill process %ld with signal %d: %s"),
 315             //            m_pid, sig, errorText[rc]);
 316         }
 317     }
 318
 319
 320     return true;
 321 }
 322
 323 void wxRemoteHtmlHelpController::Display(const wxString& helpfile)
 324 {
 325     if( !isconn_1 ) {
 326         if( !DoConnection() ) return;
 327     }
 328
 329     if (!m_connection->Execute( helpfile, -1 ) )
 330         wxLogError(wxT("wxRemoteHtmlHelpController - Display Failed"));
 331
 332 }
 333
 334 void wxRemoteHtmlHelpController::Display(const int id)
 335 {
 336     if( !isconn_1 ) {
 337         if( !DoConnection() ) return;
 338     }
 339
 340     wxString intstring;
 341     intstring.Printf( "--intstring%d", id );
 342
 343     if (!m_connection->Execute( intstring, -1 ) )
 344         wxLogError(wxT("wxRemoteHtmlHelpController - Display Failed"));
 345
 346 }
 347
 348 bool wxRemoteHtmlHelpController::AddBook(const wxString& book, bool show_wait_msg)
 349 {
 350     //ignore show_wait_msg - there shouldn't be a delay in this step
 351     //show_wait_msg = true could be transmitted with ++AddBook
 352     m_book = book;
 353
 354     if( isconn_1 ) {
 355         if (!m_connection->Poke( wxT("--AddBook"), (char*)book.c_str() ) )
 356         {
 357             wxLogError(wxT("wxRemoteHtmlHelpController - AddBook Failed"));
 358         }
 359         return false;
 360     }
 361
 362     return true;
 363 }
 364
 365 bool wxRemoteHtmlHelpController::DisplayContents()
 366 {
 367     if( isconn_1 ) {
 368         if (!m_connection->Poke( wxT("--DisplayContents"), wxT("") ) ) {
 369             wxLogError(wxT("wxRemoteHtmlHelpController - DisplayContents Failed"));
 370             return false;
 371         }
 372     }
 373     return true;
 374 }
 375 void wxRemoteHtmlHelpController::DisplayIndex()
 376 {
 377     if( isconn_1 ) {
 378         if (!m_connection->Poke( wxT("--DisplayIndex"), wxT("") ) )
 379         {
 380             wxLogError(wxT("wxRemoteHtmlHelpController - DisplayIndex Failed"));
 381         }
 382     }
 383 }
 384 bool wxRemoteHtmlHelpController::KeywordSearch(const wxString& keyword)
 385 {
 386     if( isconn_1 ) {
 387         if (!m_connection->Poke( wxT("--KeywordSearch"), (char*)keyword.c_str() ) ) {
 388             wxLogError(wxT("wxRemoteHtmlHelpController - KeywordSearch Failed"));
 389             return false;
 390         }
 391     }
 392     return true;
 393 }
 394
 395 void wxRemoteHtmlHelpController::SetTitleFormat(const wxString& format)
 396 {
 397     m_windowname = format;
 398     m_windowname.Replace( wxT(" "), wxT("_") );
 399
 400     if( isconn_1 ) {
 401         if (!m_connection->Poke( wxT("--SetTitleFormat"), (char*)format.c_str() ) )
 402         {
 403             wxLogError(wxT("wxRemoteHtmlHelpController - SetTitleFormat Failed"));
 404         }
 405     }
 406 }
 407
 408 void wxRemoteHtmlHelpController::SetTempDir(const wxString& path)
 409 {
 410     if( isconn_1 ) {
 411         if (!m_connection->Poke( wxT("--SetTempDir"), (char*)path.c_str() ) )
 412         {
 413             wxLogError(wxT("wxRemoteHtmlHelpController - SetTempDir Failed"));
 414         }
 415     }
 416 }
 417