d84afea9d1
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15412 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/clntdata.h
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// Purpose: A mixin class for holding a wxClientData or void pointer
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// Author: Robin Dunn
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// Modified by:
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// Created: 9-Oct-2001
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// RCS-ID: $Id$
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// Copyright: (c) wxWindows team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_CLNTDATAH__
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#define _WX_CLNTDATAH__
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#ifdef __GNUG__
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#pragma interface "clntdata.h"
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#endif
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#include "wx/defs.h"
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#include "wx/string.h"
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// ----------------------------------------------------------------------------
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// what kind of client data do we have?
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enum wxClientDataType
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{
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wxClientData_None, // we don't know yet because we don't have it at all
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wxClientData_Object, // our client data is typed and we own it
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wxClientData_Void // client data is untyped and we don't own it
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};
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class WXDLLEXPORT wxClientData
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{
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public:
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wxClientData() { }
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virtual ~wxClientData() { }
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};
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class WXDLLEXPORT wxStringClientData : public wxClientData
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{
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public:
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wxStringClientData() : m_data() { }
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wxStringClientData( const wxString &data ) : m_data(data) { }
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void SetData( const wxString &data ) { m_data = data; }
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const wxString& GetData() const { return m_data; }
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private:
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wxString m_data;
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};
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// This class is a mixin that provides storage and management of "client
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// data." The client data stored can either be a pointer to a wxClientData
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// object in which case it is managed by the container (i.e. it will delete
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// the data when it's destroyed) or an untyped pointer which won't be deleted
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// by the container - but not both of them
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//
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// NOTE: This functionality is currently duplicated in wxEvtHandler in order
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// to avoid having more than one vtable in that class heirachy.
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class WXDLLEXPORT wxClientDataContainer
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{
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public:
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wxClientDataContainer();
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virtual ~wxClientDataContainer();
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void SetClientObject( wxClientData *data ) { DoSetClientObject(data); }
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wxClientData *GetClientObject() const { return DoGetClientObject(); }
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void SetClientData( void *data ) { DoSetClientData(data); }
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void *GetClientData() const { return DoGetClientData(); }
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protected:
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// The user data: either an object which will be deleted by the container
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// when it's deleted or some raw pointer which we do nothing with - only
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// one type of data can be used with the given window (i.e. you cannot set
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// the void data and then associate the container with wxClientData or vice
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// versa)
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union
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{
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wxClientData *m_clientObject;
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void *m_clientData;
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};
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// client data accessors
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virtual void DoSetClientObject( wxClientData *data );
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virtual wxClientData *DoGetClientObject() const;
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virtual void DoSetClientData( void *data );
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virtual void *DoGetClientData() const;
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// what kind of data do we have?
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wxClientDataType m_clientDataType;
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};
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// ----------------------------------------------------------------------------
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#endif
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