268be3ac88
...which reveals that some uses are not derived from XEventListener, so re-
introduce BaseMutexHelper as an alternative (which originally got superseded by
DisambiguationHelper in 09b546cf9c "Fix
overloaded-virtual warning in canvas").
Change-Id: I1418370733b72526ec481b70fa69f03e7c28b7ce
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_CANVAS_BASE_BASEMUTEXHELPER_HXX
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#define INCLUDED_CANVAS_BASE_BASEMUTEXHELPER_HXX
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#include <sal/config.h>
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#include <osl/mutex.hxx>
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/* Definition of the BaseMutexHelper class */
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namespace canvas
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{
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/** Base class, initializing its own baseclass with m_aMutex.
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This is necessary to make the CanvasBase, GraphicDeviceBase,
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etc. classes freely combinable - letting them perform this
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initialization would prohibit deriving e.g. CanvasBase from
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GraphicDeviceBase.
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*/
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template< class Base > class BaseMutexHelper : public Base
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{
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protected:
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/** Construct BaseMutexHelper
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This method is the whole purpose of this template:
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initializing a base class with the provided m_aMutex
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member (the WeakComponentImplHelper templates need that,
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as they require the lifetime of the mutex to extend
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theirs).
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*/
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BaseMutexHelper() :
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Base( m_aMutex )
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{
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}
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virtual void disposeThis() {}
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mutable osl::Mutex m_aMutex;
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private:
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virtual void SAL_CALL disposing() SAL_OVERRIDE
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{ disposeThis(); }
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};
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}
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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