include/wx/html/htmlproc.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmlprep.h
   3 // Purpose:     HTML processor
   4 // Author:      Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 2001 Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifndef _WX_HTMLPREP_H_
  12 #define _WX_HTMLPREP_H_
  13
  14 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  15 #pragma interface "htmlproc.h"
  16 // (implementation is in htmlwin.cpp, there's no htmlprep.cpp!)
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_HTML
  22
  23 #include "wx/string.h"
  24
  25 // Priority of preprocessor in the chain. The higher, the earlier it is used
  26 enum
  27 {
  28     wxHTML_PRIORITY_DONTCARE = 128, // if the order doesn't matter, use this
  29                                     // priority
  30     wxHTML_PRIORITY_SYSTEM   = 256  // >=256 is only for wxHTML's internals
  31 };
  32
  33 // Classes derived from this class serve as simple text processors for
  34 // wxHtmlWindow. wxHtmlWindow runs HTML markup through all registered
  35 // processors before displaying it, thus allowing for on-the-fly
  36 // modifications of the markup.
  37
  38 class WXDLLIMPEXP_HTML wxHtmlProcessor : public wxObject
  39 {
  40     DECLARE_ABSTRACT_CLASS(wxHtmlProcessor)
  41
  42 public:
  43     wxHtmlProcessor() : wxObject(), m_enabled(true) {}
  44     virtual ~wxHtmlProcessor() {}
  45
  46     // Process input text and return processed result
  47     virtual wxString Process(const wxString& text) const = 0;
  48
  49     // Return priority value of this processor. The higher, the sooner
  50     // is the processor applied to the text.
  51     virtual int GetPriority() const { return wxHTML_PRIORITY_DONTCARE; }
  52
  53     // Enable/disable the processor. wxHtmlWindow won't use a disabled
  54     // processor even if it is in its processors queue.
  55     virtual void Enable(bool enable = true) { m_enabled = enable; }
  56     bool IsEnabled() const { return m_enabled; }
  57
  58 protected:
  59     bool m_enabled;
  60 };
  61
  62 #endif // wxUSE_HTML
  63
  64 #endif // _WX_HTMLPROC_H_