Add wx headers and ext

wxheaders/wx/private/fdiohandler.h

@@ -0,0 +1,53 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/private/fdiohandler.h
+// Purpose:     declares wxFDIOHandler class
+// Author:      Vadim Zeitlin
+// Created:     2009-08-17
+// Copyright:   (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_PRIVATE_FDIOHANDLER_H_
+#define _WX_PRIVATE_FDIOHANDLER_H_
+
+// ----------------------------------------------------------------------------
+// wxFDIOHandler: interface used to process events on file descriptors
+// ----------------------------------------------------------------------------
+
+class wxFDIOHandler
+{
+public:
+    wxFDIOHandler() { m_regmask = 0; }
+
+    // called when descriptor is available for non-blocking read
+    virtual void OnReadWaiting() = 0;
+
+    // called when descriptor is available  for non-blocking write
+    virtual void OnWriteWaiting() = 0;
+
+    // called when there is exception on descriptor
+    virtual void OnExceptionWaiting() = 0;
+
+    // called to check if the handler is still valid, only used by
+    // wxSocketImplUnix currently
+    virtual bool IsOk() const { return true; }
+
+
+    // get/set the mask of events for which we're currently registered for:
+    // it's a combination of wxFDIO_{INPUT,OUTPUT,EXCEPTION}
+    int GetRegisteredEvents() const { return m_regmask; }
+    void SetRegisteredEvent(int flag) { m_regmask |= flag; }
+    void ClearRegisteredEvent(int flag) { m_regmask &= ~flag; }
+
+
+    // virtual dtor for the base class
+    virtual ~wxFDIOHandler() { }
+
+private:
+    int m_regmask;
+
+    wxDECLARE_NO_COPY_CLASS(wxFDIOHandler);
+};
+
+#endif // _WX_PRIVATE_FDIOHANDLER_H_
+