include/wx/html/htmlfilt.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlfilt.h
   3 // Purpose:     filters
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1999 Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifndef _WX_HTMLFILT_H_
  12 #define _WX_HTMLFILT_H_
  13
  14 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  15 #pragma interface "htmlfilt.h"
  16 #endif
  17
  18 #include "wx/defs.h"
  19
  20 #if wxUSE_HTML
  21
  22 #include "wx/filesys.h"
  23
  24
  25 //--------------------------------------------------------------------------------
  26 // wxHtmlFilter
  27 //                  This class is input filter. It can "translate" files
  28 //                  in non-HTML format to HTML format
  29 //                  interface to access certain
  30 //                  kinds of files (HTPP, FTP, local, tar.gz etc..)
  31 //--------------------------------------------------------------------------------
  32
  33 class WXDLLIMPEXP_HTML wxHtmlFilter : public wxObject
  34 {
  35     DECLARE_ABSTRACT_CLASS(wxHtmlFilter)
  36
  37 public:
  38     wxHtmlFilter() : wxObject() {}
  39     virtual ~wxHtmlFilter() {}
  40
  41     // returns true if this filter is able to open&read given file
  42     virtual bool CanRead(const wxFSFile& file) const = 0;
  43
  44     // Reads given file and returns HTML document.
  45     // Returns empty string if opening failed
  46     virtual wxString ReadFile(const wxFSFile& file) const = 0;
  47 };
  48
  49
  50
  51 //--------------------------------------------------------------------------------
  52 // wxHtmlFilterPlainText
  53 //                  This filter is used as default filter if no other can
  54 //                  be used (= uknown type of file). It is used by
  55 //                  wxHtmlWindow itself.
  56 //--------------------------------------------------------------------------------
  57
  58
  59 class WXDLLIMPEXP_HTML wxHtmlFilterPlainText : public wxHtmlFilter
  60 {
  61     DECLARE_DYNAMIC_CLASS(wxHtmlFilterPlainText)
  62
  63 public:
  64     virtual bool CanRead(const wxFSFile& file) const;
  65     virtual wxString ReadFile(const wxFSFile& file) const;
  66 };
  67
  68 //--------------------------------------------------------------------------------
  69 // wxHtmlFilterHTML
  70 //          filter for text/html
  71 //--------------------------------------------------------------------------------
  72
  73 class wxHtmlFilterHTML : public wxHtmlFilter
  74 {
  75     DECLARE_DYNAMIC_CLASS(wxHtmlFilterHTML)
  76
  77     public:
  78         virtual bool CanRead(const wxFSFile& file) const;
  79         virtual wxString ReadFile(const wxFSFile& file) const;
  80 };
  81
  82
  83
  84 #endif // wxUSE_HTML
  85
  86 #endif // _WX_HTMLFILT_H_
  87