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* html = new wxHtmlHelpController(wxHF_DEFAULT_STYLE, m_parentWindow);
  55
  56     m_helpControllerType = wxUseHtmlHelp;
  57     if( html->Initialize( GetValidFilename( filename ) ) )
  58     {
  59         m_helpController = html;
  60         m_parentWindow = NULL;
  61         return true;
  62     }
  63
  64     // failed
  65     delete html;
  66
  67     return false;
  68 }
  69
  70 wxString wxBestHelpController::GetValidFilename( const wxString& filename ) const
  71 {
  72     wxString tmp = filename;
  73     ::wxStripExtension( tmp );
  74
  75     switch( m_helpControllerType )
  76     {
  77         case wxUseChmHelp:
  78             if( ::wxFileExists( tmp + wxT(".chm") ) )
  79                 return tmp + wxT(".chm");
  80
  81             return filename;
  82
  83         case wxUseHtmlHelp:
  84             if( ::wxFileExists( tmp + wxT(".htb") ) )
  85                 return tmp + wxT(".htb");
  86             if( ::wxFileExists( tmp + wxT(".zip") ) )
  87                 return tmp + wxT(".zip");
  88             if( ::wxFileExists( tmp + wxT(".hhp") ) )
  89                 return tmp + wxT(".hhp");
  90
  91             return filename;
  92
  93         default:
  94             // we CAN'T get here
  95             wxFAIL_MSG( wxT("wxBestHelpController: Must call Initialize, first!") );
  96     }
  97
  98     return wxEmptyString;
  99 }
 100
 101 #endif
 102     // wxUSE_HELP && wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP