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/* -*- 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 .
*/
#pragma once
#include "filtercache.hxx"
#include <com/sun/star/util/XChangesListener.hpp>
#include <cppuhelper/implbase.hxx>
#include <mutex>
namespace filter::config {
/** @short implements a listener, which will update the
global filter cache, if the underlying configuration
wa changed by other processes.
*/
class CacheUpdateListener : public ::cppu::WeakImplHelper< css::util::XChangesListener >
{
// member
private:
std::mutex m_aMutex;
/** @short reference to the singleton(!) filter cache implementation,
which should be updated by this thread. */
FilterCache &m_rCache;
/** @short holds the configuration access, where we listen alive. */
css::uno::Reference< css::uno::XInterface > m_xConfig;
/** @short every instance of this update listener listen on
a special sub set of the filter configuration.
So it should know, which type of configuration entry
it must put into the filter cache, if the configuration notifies changes ... */
FilterCache::EItemType m_eConfigType;
// native interface
public:
// ctor/dtor
/** @short initialize new instance of this class.
@descr Listening won't be started here. It can be done
by calling startListening() on this instance.
@see startListening()
@param xConfigAccess
the configuration access, where this instance should listen for changes.
@param eConfigType
specify the type of configuration.
*/
CacheUpdateListener(FilterCache &rFilterCache,
const css::uno::Reference< css::uno::XInterface >& xConfigAccess,
FilterCache::EItemType eConfigType);
/** @short standard dtor.
*/
virtual ~CacheUpdateListener() override;
/** @short starts listening.
*/
void startListening();
/** @short stop listening.
*/
void stopListening();
// uno interface
public:
// XChangesListener
virtual void SAL_CALL changesOccurred(const css::util::ChangesEvent& aEvent) override;
// lang.XEventListener
virtual void SAL_CALL disposing(const css::lang::EventObject& aEvent) override;
};
} // namespace filter::config
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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