include/wx/private/fdiohandler.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/private/fdiohandler.h
   3 // Purpose:     declares wxFDIOHandler class
   4 // Author:      Vadim Zeitlin
   5 // Created:     2009-08-17
   6 // RCS-ID:      $Id: wxhead.h,v 1.11 2009-06-29 10:23:04 zeitlin Exp $
   7 // Copyright:   (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_PRIVATE_FDIOHANDLER_H_
  12 #define _WX_PRIVATE_FDIOHANDLER_H_
  13
  14 // ----------------------------------------------------------------------------
  15 // wxFDIOHandler: interface used to process events on file descriptors
  16 // ----------------------------------------------------------------------------
  17
  18 class wxFDIOHandler
  19 {
  20 public:
  21     wxFDIOHandler() { m_regmask = 0; }
  22
  23     // called when descriptor is available for non-blocking read
  24     virtual void OnReadWaiting() = 0;
  25
  26     // called when descriptor is available  for non-blocking write
  27     virtual void OnWriteWaiting() = 0;
  28
  29     // called when there is exception on descriptor
  30     virtual void OnExceptionWaiting() = 0;
  31
  32     // called to check if the handler is still valid, only used by
  33     // wxSocketImplUnix currently
  34     virtual bool IsOk() const { return true; }
  35
  36
  37     // get/set the mask of events for which we're currently registered for:
  38     // it's a combination of wxFDIO_{INPUT,OUTPUT,EXCEPTION}
  39     int GetRegisteredEvents() const { return m_regmask; }
  40     void SetRegisteredEvent(int flag) { m_regmask |= flag; }
  41     void ClearRegisteredEvent(int flag) { m_regmask &= ~flag; }
  42
  43
  44     // virtual dtor for the base class
  45     virtual ~wxFDIOHandler() { }
  46
  47 private:
  48     int m_regmask;
  49
  50     wxDECLARE_NO_COPY_CLASS(wxFDIOHandler);
  51 };
  52
  53 #endif // _WX_PRIVATE_FDIOHANDLER_H_
  54