+/////////////////////////////////////////////////////////////////////////////
+// Name: wx/clntdata.h
+// Purpose: A mixin class for holding a wxClientData or void pointer
+// Author: Robin Dunn
+// Modified by:
+// Created: 9-Oct-2001
+// RCS-ID: $Id$
+// Copyright: (c) wxWindows team
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_CLNTDATAH__
+#define _WX_CLNTDATAH__
+
+#ifdef __GNUG__
+ #pragma interface "event.h"
+#endif
+
+#include "wx/defs.h"
+
+// ----------------------------------------------------------------------------
+
+// what kind of client data do we have?
+enum wxClientDataType
+{
+ wxClientData_None, // we don't know yet because we don't have it at all
+ wxClientData_Object, // our client data is typed and we own it
+ wxClientData_Void // client data is untyped and we don't own it
+};
+
+class WXDLLEXPORT wxClientData
+{
+public:
+ wxClientData() { }
+ virtual ~wxClientData() { }
+};
+
+class WXDLLEXPORT wxStringClientData : public wxClientData
+{
+public:
+ wxStringClientData() { }
+ wxStringClientData( const wxString &data ) : m_data(data) { }
+ void SetData( const wxString &data ) { m_data = data; }
+ const wxString& GetData() const { return m_data; }
+
+private:
+ wxString m_data;
+};
+
+
+class WXDLLEXPORT wxClientDataContainer
+{
+public:
+ wxClientDataContainer();
+ ~wxClientDataContainer();
+
+ // each window may have associated client data: either a pointer to
+ // wxClientData object in which case it is managed by the window (i.e.
+ // it will delete the data when it's destroyed) or an untyped pointer
+ // which won't be deleted by the window - but not both of them
+ void SetClientObject( wxClientData *data ) { DoSetClientObject(data); }
+ wxClientData *GetClientObject() const { return DoGetClientObject(); }
+
+ void SetClientData( void *data ) { DoSetClientData(data); }
+ void *GetClientData() const { return DoGetClientData(); }
+
+protected:
+ // user data associated with the window: either an object which will be
+ // deleted by the window when it's deleted or some raw pointer which we do
+ // nothing with - only one type of data can be used with the given window
+ // (i.e. you cannot set the void data and then associate the window with
+ // wxClientData or vice versa)
+ union
+ {
+ wxClientData *m_clientObject;
+ void *m_clientData;
+ };
+
+ // client data accessors
+ virtual void DoSetClientObject( wxClientData *data );
+ virtual wxClientData *DoGetClientObject() const;
+
+ virtual void DoSetClientData( void *data );
+ virtual void *DoGetClientData() const;
+
+ // what kind of data do we have?
+ wxClientDataType m_clientDataType;
+
+};
+
+// ----------------------------------------------------------------------------
+#endif
+
projects / wxWidgets.git / commitdiff
