src/msw/helpbest.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/helpbest.cpp
   3 // Purpose:     Tries to load MS HTML Help, falls back to wxHTML upon failure
   4 // Author:      Mattia Barbon
   5 // Modified by:
   6 // Created:     02/04/2001
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Mattia Barbon
   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/log.h"
  21 #endif
  22
  23 #include "wx/filefn.h"
  24
  25 #if wxUSE_HELP && wxUSE_MS_HTML_HELP \
  26     && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
  27
  28 #include "wx/msw/helpchm.h"
  29 #include "wx/html/helpctrl.h"
  30 #include "wx/msw/helpbest.h"
  31
  32 IMPLEMENT_DYNAMIC_CLASS( wxBestHelpController, wxHelpControllerBase )
  33
  34 bool wxBestHelpController::Initialize( const wxString& filename )
  35 {
  36     // try wxCHMHelpController
  37     wxCHMHelpController* chm = new wxCHMHelpController(m_parentWindow);
  38
  39     m_helpControllerType = wxUseChmHelp;
  40     // do not warn upon failure
  41     wxLogNull dontWarnOnFailure;
  42
  43     if( chm->Initialize( GetValidFilename( filename ) ) )
  44     {
  45         m_helpController = chm;
  46         m_parentWindow = NULL;
  47         return true;
  48     }
  49
  50     // failed
  51     delete chm;
  52
  53     // try wxHtmlHelpController
  54     wxHtmlHelpController *
  55         html = new wxHtmlHelpController(m_style, m_parentWindow);
  56
  57     m_helpControllerType = wxUseHtmlHelp;
  58     if( html->Initialize( GetValidFilename( filename ) ) )
  59     {
  60         m_helpController = html;
  61         m_parentWindow = NULL;
  62         return true;
  63     }
  64
  65     // failed
  66     delete html;
  67
  68     return false;
  69 }
  70
  71 wxString wxBestHelpController::GetValidFilename( const wxString& filename ) const
  72 {
  73     wxString tmp = filename;
  74     ::wxStripExtension( tmp );
  75
  76     switch( m_helpControllerType )
  77     {
  78         case wxUseChmHelp:
  79             if( ::wxFileExists( tmp + wxT(".chm") ) )
  80                 return tmp + wxT(".chm");
  81
  82             return filename;
  83
  84         case wxUseHtmlHelp:
  85             if( ::wxFileExists( tmp + wxT(".htb") ) )
  86                 return tmp + wxT(".htb");
  87             if( ::wxFileExists( tmp + wxT(".zip") ) )
  88                 return tmp + wxT(".zip");
  89             if( ::wxFileExists( tmp + wxT(".hhp") ) )
  90                 return tmp + wxT(".hhp");
  91
  92             return filename;
  93
  94         default:
  95             // we CAN'T get here
  96             wxFAIL_MSG( wxT("wxBestHelpController: Must call Initialize, first!") );
  97     }
  98
  99     return wxEmptyString;
 100 }
 101
 102 #endif
 103     // wxUSE_HELP && wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP