include/wx/msw/helpchm.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/helpchm.h
   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 #ifndef _WX_MSW_HELPCHM_H_
  13 #define _WX_MSW_HELPCHM_H_
  14
  15 #if wxUSE_MS_HTML_HELP
  16
  17 #include "wx/helpbase.h"
  18
  19 class WXDLLIMPEXP_CORE wxCHMHelpController : public wxHelpControllerBase
  20 {
  21 public:
  22     wxCHMHelpController(wxWindow* parentWindow = NULL): wxHelpControllerBase(parentWindow) { }
  23
  24     // Must call this to set the filename
  25     virtual bool Initialize(const wxString& file);
  26     virtual bool Initialize(const wxString& file, int WXUNUSED(server) ) { return Initialize( file ); }
  27
  28     // If file is "", reloads file given in Initialize
  29     virtual bool LoadFile(const wxString& file = wxEmptyString);
  30     virtual bool DisplayContents();
  31     virtual bool DisplaySection(int sectionNo);
  32     virtual bool DisplaySection(const wxString& section);
  33     virtual bool DisplayBlock(long blockNo);
  34     virtual bool DisplayContextPopup(int contextId);
  35     virtual bool DisplayTextPopup(const wxString& text, const wxPoint& pos);
  36     virtual bool KeywordSearch(const wxString& k,
  37                                wxHelpSearchMode mode = wxHELP_SEARCH_ALL);
  38     virtual bool Quit();
  39
  40     wxString GetHelpFile() const { return m_helpFile; }
  41
  42     // helper of DisplayTextPopup(), also used in wxSimpleHelpProvider::ShowHelp
  43     static bool ShowContextHelpPopup(const wxString& text,
  44                                      const wxPoint& pos,
  45                                      wxWindow *window);
  46
  47 protected:
  48     // get the name of the CHM file we use from our m_helpFile
  49     wxString GetValidFilename() const;
  50
  51     // Call HtmlHelp() with the provided parameters (both overloads do the same
  52     // thing but allow to avoid casts in the calling code) and return false
  53     // (but don't crash) if HTML help is unavailable
  54     static bool CallHtmlHelp(wxWindow *win, const wxChar *str,
  55                              unsigned cmd, WXWPARAM param);
  56     static bool CallHtmlHelp(wxWindow *win, const wxChar *str,
  57                              unsigned cmd, const void *param = NULL)
  58     {
  59         return CallHtmlHelp(win, str, cmd, reinterpret_cast<WXWPARAM>(param));
  60     }
  61
  62     // even simpler wrappers using GetParentWindow() and GetValidFilename() as
  63     // the first 2 HtmlHelp() parameters
  64     bool CallHtmlHelp(unsigned cmd, WXWPARAM param)
  65     {
  66         return CallHtmlHelp(GetParentWindow(), GetValidFilename().t_str(),
  67                             cmd, param);
  68     }
  69
  70     bool CallHtmlHelp(unsigned cmd, const void *param = NULL)
  71     {
  72         return CallHtmlHelp(cmd, reinterpret_cast<WXWPARAM>(param));
  73     }
  74
  75     // wrapper around CallHtmlHelp(HH_DISPLAY_TEXT_POPUP): only one of text and
  76     // contextId parameters can be non-NULL/non-zero
  77     static bool DoDisplayTextPopup(const wxChar *text,
  78                                    const wxPoint& pos,
  79                                    int contextId,
  80                                    wxWindow *window);
  81
  82
  83     wxString m_helpFile;
  84
  85     DECLARE_DYNAMIC_CLASS(wxCHMHelpController)
  86 };
  87
  88 #endif // wxUSE_MS_HTML_HELP
  89
  90 #endif // _WX_MSW_HELPCHM_H_