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 // Copyright:   (c) Mattia Barbon
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15 #pragma hdrstop
  16 #endif
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/log.h"
  20 #endif
  21
  22 #include "wx/filename.h"
  23
  24 #if wxUSE_HELP && wxUSE_MS_HTML_HELP \
  25     && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
  26
  27 #include "wx/msw/helpchm.h"
  28 #include "wx/html/helpctrl.h"
  29 #include "wx/msw/helpbest.h"
  30
  31 IMPLEMENT_DYNAMIC_CLASS( wxBestHelpController, wxHelpControllerBase )
  32
  33 bool wxBestHelpController::Initialize( const wxString& filename )
  34 {
  35     // try wxCHMHelpController
  36     wxCHMHelpController* chm = new wxCHMHelpController(m_parentWindow);
  37
  38     m_helpControllerType = wxUseChmHelp;
  39     // do not warn upon failure
  40     wxLogNull dontWarnOnFailure;
  41
  42     if( chm->Initialize( GetValidFilename( filename ) ) )
  43     {
  44         m_helpController = chm;
  45         m_parentWindow = NULL;
  46         return true;
  47     }
  48
  49     // failed
  50     delete chm;
  51
  52     // try wxHtmlHelpController
  53     wxHtmlHelpController *
  54         html = new wxHtmlHelpController(m_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     wxFileName fn(filename);
  73
  74     switch( m_helpControllerType )
  75     {
  76         case wxUseChmHelp:
  77             fn.SetExt("chm");
  78             if( fn.FileExists() )
  79                 return fn.GetFullPath();
  80
  81             return filename;
  82
  83         case wxUseHtmlHelp:
  84             fn.SetExt("htb");
  85             if( fn.FileExists() )
  86                 return fn.GetFullPath();
  87
  88             fn.SetExt("zip");
  89             if( fn.FileExists() )
  90                 return fn.GetFullPath();
  91
  92             fn.SetExt("hhp");
  93             if( fn.FileExists() )
  94                 return fn.GetFullPath();
  95
  96             return filename;
  97
  98         default:
  99             // we CAN'T get here
 100             wxFAIL_MSG( wxT("wxBestHelpController: Must call Initialize, first!") );
 101     }
 102
 103     return wxEmptyString;
 104 }
 105
 106 #endif
 107     // wxUSE_HELP && wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP