/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #ifndef INCLUDED_VCL_IMPDEL_HXX #define INCLUDED_VCL_IMPDEL_HXX #include namespace vcl { class DeletionListener; class DeletionNotifier { std::list< DeletionListener* > m_aListeners; protected: DeletionNotifier() {} ~DeletionNotifier() { notifyDelete(); } inline void notifyDelete(); public: void addDel( DeletionListener* pListener ) { m_aListeners.push_back( pListener ); } void removeDel( DeletionListener* pListener ) { m_aListeners.remove( pListener ); } }; class DeletionListener { DeletionNotifier* m_pNotifier; public: DeletionListener( DeletionNotifier* pNotifier ) : m_pNotifier( pNotifier ) { if( m_pNotifier ) m_pNotifier->addDel( this ); } ~DeletionListener() { if( m_pNotifier ) m_pNotifier->removeDel( this ); } void deleted() { m_pNotifier = nullptr; } bool isDeleted() const { return (m_pNotifier == nullptr); } }; inline void DeletionNotifier::notifyDelete() { for( auto& rListener : m_aListeners ) rListener->deleted(); m_aListeners.clear(); } } // namespace vcl #endif // INCLUDED_VCL_IMPDEL_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ istro/collabora/cd-5.3-3.2'>distro/collabora/cd-5.3-3.2 LibreOffice 核心代码仓库文档基金会

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