include/wx/generic/helphtml.h

   1 /*-*- c++ -*-********************************************************
   2  * helphtml.h - base class for html based help controllers          *
   3  *                                                                  *
   4  * (C) 1999 by Karsten Ballüder (Ballueder@usa.net)                 *
   5  *                                                                  *
   6  * $Id$
   7  *******************************************************************/
   8
   9 #ifndef __WX_HELPHTML_H_
  10 #define __WX_HELPHTML_H_
  11
  12 #if wxUSE_HELP
  13
  14 #ifdef __GNUG__
  15 #   pragma interface "helphtml.h"
  16 #endif
  17
  18 #include "wx/helpbase.h"
  19 #include "wx/frame.h"
  20
  21 /// Path separator.
  22 #ifdef __WXMSW__
  23 #define WXEXTHELP_SEPARATOR _T('\\')
  24 #elif defined(__WXMAC__)
  25 #define WXEXTHELP_SEPARATOR _T(':')
  26 #else
  27 #define WXEXTHELP_SEPARATOR _T('/')
  28 #endif
  29
  30 class WXDLLEXPORT wxExtHelpMapList;
  31
  32
  33 /**
  34    This class is the base class for all html help implementations.
  35    It requires the name of a directory containing the documentation
  36    and a file mapping numerical Section numbers to relative URLS.
  37
  38    The map file contains two or three fields per line:
  39    numeric_id  relative_URL  [; comment/documentation]
  40
  41    The numeric_id is the id used to look up the entry in
  42    DisplaySection()/DisplayBlock(). The relative_URL is a filename of
  43    an html file, relative to the help directory. The optional
  44    comment/documentation field (after a ';') is used for keyword
  45    searches, so some meaningful text here does not hurt.
  46    If the documentation itself contains a ';', only the part before
  47    that will be displayed in the listbox, but all of it used for search.
  48
  49    Lines starting with ';' will be ignored.
  50 */
  51
  52 class WXDLLEXPORT wxHTMLHelpControllerBase : public wxHelpControllerBase
  53 {
  54 DECLARE_ABSTRACT_CLASS(wxHTMLHelpControllerBase)
  55    public:
  56    wxHTMLHelpControllerBase(void);
  57    virtual ~wxHTMLHelpControllerBase(void);
  58
  59    /** This must be called to tell the controller where to find the
  60        documentation.
  61        If a locale is set, look in file/localename, i.e.
  62        If passed "/usr/local/myapp/help" and the current wxLocale is
  63        set to be "de", then look in "/usr/local/myapp/help/de/"
  64        first and fall back to "/usr/local/myapp/help" if that
  65        doesn't exist.
  66
  67        @param file - NOT a filename, but a directory name.
  68        @return true on success
  69    */
  70    virtual bool Initialize(const wxString& dir, int WXUNUSED(server))
  71       { return Initialize(dir); }
  72
  73    /** This must be called to tell the controller where to find the
  74        documentation.
  75        If a locale is set, look in file/localename, i.e.
  76        If passed "/usr/local/myapp/help" and the current wxLocale is
  77        set to be "de", then look in "/usr/local/myapp/help/de/"
  78        first and fall back to "/usr/local/myapp/help" if that
  79        doesn't exist.
  80        @param dir - directory name where to fine the help files
  81        @return true on success
  82    */
  83    virtual bool Initialize(const wxString& dir);
  84
  85    /** If file is "", reloads file given in Initialize.
  86        @file Name of help directory.
  87        @return true on success
  88    */
  89    virtual bool LoadFile(const wxString& file = "");
  90
  91    /** Display list of all help entries.
  92        @return true on success
  93    */
  94    virtual bool DisplayContents(void);
  95    /** Display help for id sectionNo.
  96        @return true on success
  97    */
  98    virtual bool DisplaySection(int sectionNo);
  99    /** Display help for id sectionNo -- identical with DisplaySection().
 100        @return true on success
 101    */
 102    virtual bool DisplaySection(const wxString& section);
 103    /** Display help for URL (using DisplayHelp) or keyword (using KeywordSearch)
 104        @return true on success
 105    */
 106    virtual bool DisplayBlock(long blockNo);
 107    /** Search comment/documentation fields in map file and present a
 108        list to chose from.
 109        @key k string to search for, empty string will list all entries
 110        @return true on success
 111    */
 112    virtual bool KeywordSearch(const wxString& k);
 113
 114    /// does nothing
 115    virtual bool Quit(void);
 116    /// does nothing
 117    virtual void OnQuit(void);
 118
 119    /// Call the browser using a relative URL.
 120    virtual bool DisplayHelp(const wxString &) = 0;
 121
 122    /// Allows one to override the default settings for the help frame.
 123    virtual void SetFrameParameters(const wxString& WXUNUSED(title),
 124                                    const wxSize& WXUNUSED(size),
 125                                    const wxPoint& WXUNUSED(pos) = wxDefaultPosition,
 126                                    bool WXUNUSED(newFrameEachTime) = FALSE)
 127       {
 128          // does nothing by default
 129       }
 130    /// Obtains the latest settings used by the help frame and the help
 131    /// frame.
 132    virtual wxFrame *GetFrameParameters(wxSize *WXUNUSED(size) = NULL,
 133                                    wxPoint *WXUNUSED(pos) = NULL,
 134                                    bool *WXUNUSED(newFrameEachTime) = NULL)
 135       {
 136          return (wxFrame*) NULL;// does nothing by default
 137       }
 138
 139  protected:
 140    /// Filename of currently active map file.
 141    wxString         m_MapFile;
 142    /// How many entries do we have in the map file?
 143    int              m_NumOfEntries;
 144    /// A list containing all id,url,documentation triples.
 145    wxList          *m_MapList;
 146    /// Deletes the list and all objects.
 147    void DeleteList(void);
 148 };
 149
 150 #endif // wxUSE_HELP
 151
 152 #endif // __WX_HELPHTML_H_