src/msw/helpchm.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpchm.cpp
   3 // Purpose:     Help system: MS HTML Help implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     16/04/2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "helpchm.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/defs.h"
  25 #endif
  26
  27 #include "wx/filefn.h"
  28
  29 #if wxUSE_HELP && wxUSE_MS_HTML_HELP && defined(__WIN95__)
  30 #include "wx/msw/helpchm.h"
  31
  32 // This is found in the HTML Help Workshop installation,
  33 // along with htmlhelp.lib.
  34 #include <htmlhelp.h>
  35
  36 #include <time.h>
  37
  38 #ifdef __WXMSW__
  39 #include "wx/msw/private.h"
  40 #endif
  41
  42 #include <string.h>
  43
  44 static HWND GetSuitableHWND()
  45 {
  46     if (wxTheApp->GetTopWindow())
  47         return (HWND) wxTheApp->GetTopWindow()->GetHWND();
  48     else
  49         return GetDesktopWindow();
  50 }
  51
  52 IMPLEMENT_DYNAMIC_CLASS(wxCHMHelpController, wxHelpControllerBase)
  53
  54 bool wxCHMHelpController::Initialize(const wxString& filename)
  55 {
  56     m_helpFile = filename;
  57     return TRUE;
  58 }
  59
  60 bool wxCHMHelpController::LoadFile(const wxString& file)
  61 {
  62     if (!file.IsEmpty())
  63         m_helpFile = file;
  64     return TRUE;
  65 }
  66
  67 bool wxCHMHelpController::DisplayContents()
  68 {
  69     if (m_helpFile.IsEmpty()) return FALSE;
  70
  71     wxString str = GetValidFilename(m_helpFile);
  72
  73     HtmlHelp(GetSuitableHWND(), (const wxChar*) str, HH_HELP_FINDER, 0L);
  74     return TRUE;
  75 }
  76
  77 // Use topic or HTML filename
  78 bool wxCHMHelpController::DisplaySection(const wxString& section)
  79 {
  80     if (m_helpFile.IsEmpty()) return FALSE;
  81
  82     wxString str = GetValidFilename(m_helpFile);
  83
  84     // Is this an HTML file or a keyword?
  85     bool isFilename = (section.Find(wxT(".htm")) != -1);
  86
  87     if (isFilename)
  88         HtmlHelp(GetSuitableHWND(), (const wxChar*) str, HH_DISPLAY_TOPIC, (DWORD) (const wxChar*) section);
  89     else
  90         KeywordSearch(section);
  91     return TRUE;
  92 }
  93
  94 // Use context number
  95 bool wxCHMHelpController::DisplaySection(int section)
  96 {
  97     if (m_helpFile.IsEmpty()) return FALSE;
  98
  99     wxString str = GetValidFilename(m_helpFile);
 100
 101     HtmlHelp(GetSuitableHWND(), (const wxChar*) str, HH_HELP_CONTEXT, (DWORD)section);
 102     return TRUE;
 103 }
 104
 105 bool wxCHMHelpController::DisplayBlock(long block)
 106 {
 107     return DisplaySection(block);
 108 }
 109
 110 bool wxCHMHelpController::KeywordSearch(const wxString& k)
 111 {
 112     if (m_helpFile.IsEmpty()) return FALSE;
 113
 114     wxString str = GetValidFilename(m_helpFile);
 115
 116     HH_AKLINK link;
 117     link.cbStruct =     sizeof(HH_AKLINK) ;
 118     link.fReserved =    FALSE ;
 119     link.pszKeywords =  k.c_str() ;
 120     link.pszUrl =       NULL ;
 121     link.pszMsgText =   NULL ;
 122     link.pszMsgTitle =  NULL ;
 123     link.pszWindow =    NULL ;
 124     link.fIndexOnFail = TRUE ;
 125
 126     HtmlHelp(GetSuitableHWND(), (const wxChar*) str, HH_KEYWORD_LOOKUP, (DWORD)& link);
 127     return TRUE;
 128 }
 129
 130 bool wxCHMHelpController::Quit()
 131 {
 132     HtmlHelp(GetSuitableHWND(), 0, HH_CLOSE_ALL, 0L);
 133     return TRUE;
 134 }
 135
 136 // Append extension if necessary.
 137 wxString wxCHMHelpController::GetValidFilename(const wxString& file) const
 138 {
 139     wxString path, name, ext;
 140     wxSplitPath(file, & path, & name, & ext);
 141
 142     wxString fullName;
 143     if (path.IsEmpty())
 144         fullName = name + wxT(".chm");
 145     else if (path.Last() == wxT('\\'))
 146         fullName = path + name + wxT(".chm");
 147     else
 148         fullName = path + wxT("\\") + name + wxT(".chm");
 149     return fullName;
 150 }
 151
 152 #endif // wxUSE_HELP