src/generic/helpext.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpext.cpp
   3 // Purpose:     an external help controller for wxWindows
   4 // Author:      Karsten Ballueder
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Karsten Ballueder
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #   pragma implementation "wxexthlp.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #ifdef __BORLANDC__
  19     #pragma hdrstop
  20 #endif
  21
  22 #if wxUSE_HELP
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/setup.h"
  26     #include "wx/string.h"
  27     #include "wx/utils.h"
  28     #include "wx/list.h"
  29     #include "wx/intl.h"
  30 #endif
  31
  32 #include "wx/helpbase.h"
  33 #include "wx/generic/helpext.h"
  34
  35 #include <stdio.h>
  36 #include <ctype.h>
  37 #include <sys/stat.h>
  38
  39 #if !defined(__WINDOWS__) && !defined(__OS2__)
  40     #include   <unistd.h>
  41 #endif
  42
  43 #ifdef __WXMSW__
  44 #include <windows.h>
  45 #endif
  46
  47 IMPLEMENT_CLASS(wxExtHelpController, wxHTMLHelpControllerBase)
  48
  49 /**
  50    This class implements help via an external browser.
  51    It requires the name of a directory containing the documentation
  52    and a file mapping numerical Section numbers to relative URLS.
  53 */
  54
  55 wxExtHelpController::wxExtHelpController(void)
  56 {
  57    m_BrowserName = WXEXTHELP_DEFAULTBROWSER;
  58    m_BrowserIsNetscape = WXEXTHELP_DEFAULTBROWSER_IS_NETSCAPE;
  59
  60    char *browser = getenv(WXEXTHELP_ENVVAR_BROWSER);
  61    if(browser)
  62    {
  63       m_BrowserName = browser;
  64       browser = getenv(WXEXTHELP_ENVVAR_BROWSERISNETSCAPE);
  65       m_BrowserIsNetscape = browser && (atoi(browser) != 0);
  66    }
  67 }
  68
  69
  70 void
  71 wxExtHelpController::SetBrowser(wxString const & browsername, bool isNetscape)
  72 {
  73    m_BrowserName = browsername;
  74    m_BrowserIsNetscape = isNetscape;
  75 }
  76
  77 // Set viewer: new, generic name for SetBrowser
  78 void wxExtHelpController::SetViewer(const wxString& viewer, long flags)
  79 {
  80     SetBrowser(viewer, ((flags & wxHELP_NETSCAPE) == wxHELP_NETSCAPE));
  81 }
  82
  83 bool
  84 wxExtHelpController::DisplayHelp(wxString const &relativeURL)
  85 {
  86    wxBusyCursor b; // display a busy cursor
  87
  88
  89 #if defined(__WXMSW__)
  90    wxString url;
  91    url << m_MapFile << '\\' << relativeURL.BeforeFirst('#');
  92    bool bOk = (int)ShellExecute(NULL, "open", url,
  93                                 NULL, NULL, SW_SHOWNORMAL ) > 32;
  94    if ( !bOk )
  95    {
  96       wxLogSysError(_("Cannot open URL '%s'"), relativeURL.c_str());
  97       return false;
  98    }
  99    else
 100       return true;
 101 #elif  defined(__WXPM__)
 102    wxString url;
 103    url << m_MapFile << '\\' << relativeURL.BeforeFirst('#');
 104 //   will have to fix for OS/2, later.....DW
 105 //   bool bOk = (int)ShellExecute(NULL, "open", url,
 106 //                                NULL, NULL, SW_SHOWNORMAL ) > 32;
 107 //   if ( !bOk )
 108 //   {
 109 //      wxLogSysError(_("Cannot open URL '%s'"), relativeURL.c_str());
 110 //      return false;
 111 //   }
 112 //   else
 113       return TRUE;
 114 #else
 115    // assume UNIX
 116    wxString command;
 117
 118    if(m_BrowserIsNetscape) // try re-loading first
 119    {
 120       wxString lockfile;
 121       wxGetHomeDir(&lockfile);
 122 #ifdef __VMS__
 123       lockfile << WXEXTHELP_SEPARATOR << wxT(".netscape]lock.");
 124       struct stat statbuf;
 125       if(stat(lockfile.fn_str(), &statbuf) == 0)
 126 #else
 127       lockfile << WXEXTHELP_SEPARATOR << wxT(".netscape/lock");
 128       struct stat statbuf;
 129       if(lstat(lockfile.fn_str(), &statbuf) == 0)
 130       // cannot use wxFileExists, because it's a link pointing to a
 131       // non-existing location      if(wxFileExists(lockfile))
 132 #endif
 133         {
 134          long success;
 135          command << m_BrowserName << wxT(" -remote openURL(")
 136                  << wxT("file://") << m_MapFile
 137                  << WXEXTHELP_SEPARATOR << relativeURL << wxT(")");
 138          success = wxExecute(command);
 139          if(success != 0 ) // returns PID on success
 140             return TRUE;
 141       }
 142    }
 143    command = m_BrowserName;
 144    command << wxT(" file://")
 145            << m_MapFile << WXEXTHELP_SEPARATOR << relativeURL;
 146    return wxExecute(command) != 0;
 147 #endif
 148 }
 149
 150 #endif // wxUSE_HELP
 151