Moved the [Set|Get]Client[Data|Object] and such out of wxWindowBase

and into a mixin class.  Mixed it with wxEvtHandler.  Regenerated
files lists and makefiles.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11911 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/clntdata.cpp

@@ -0,0 +1,87 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        common/clntdata.cpp
+// 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 license
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+    #pragma implementation "clntdata.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#include "wx/clntdata.h"
+
+
+// ----------------------------------------------------------------------------
+
+
+wxClientDataContainer::wxClientDataContainer()
+{
+    // no client data (yet)
+    m_clientData = NULL;
+    m_clientDataType = wxClientData_None;
+}
+
+wxClientDataContainer::~wxClientDataContainer()
+{
+    // we only delete object data, not untyped
+    if ( m_clientDataType == wxClientData_Object )
+        delete m_clientObject;
+}
+
+void wxClientDataContainer::DoSetClientObject( wxClientData *data )
+{
+    wxASSERT_MSG( m_clientDataType != wxClientData_Void,
+                  wxT("can't have both object and void client data") );
+
+    if ( m_clientObject )
+        delete m_clientObject;
+
+    m_clientObject = data;
+    m_clientDataType = wxClientData_Object;
+}
+
+wxClientData *wxClientDataContainer::DoGetClientObject() const
+{
+    // it's not an error to call GetClientObject() on a window which doesn't
+    // have client data at all - NULL will be returned
+    wxASSERT_MSG( m_clientDataType != wxClientData_Void,
+                  wxT("this window doesn't have object client data") );
+
+    return m_clientObject;
+}
+
+void wxClientDataContainer::DoSetClientData( void *data )
+{
+    wxASSERT_MSG( m_clientDataType != wxClientData_Object,
+                  wxT("can't have both object and void client data") );
+
+    m_clientData = data;
+    m_clientDataType = wxClientData_Void;
+}
+
+void *wxClientDataContainer::DoGetClientData() const
+{
+    // it's not an error to call GetClientData() on a window which doesn't have
+    // client data at all - NULL will be returned
+    wxASSERT_MSG( m_clientDataType != wxClientData_Object,
+                  wxT("this window doesn't have void client data") );
+
+    return m_clientData;
+}
+
+
+// ----------------------------------------------------------------------------
+
+