/* -*- 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 .

 */

#include <com/sun/star/beans/XPropertySet.hpp>

#include <comphelper/propmultiplex2.hxx>

#include <osl/diagnose.h>

namespace comphelper

{

using namespace ::com::sun::star::uno;

using namespace ::com::sun::star::lang;

using namespace ::com::sun::star::beans;

OPropertyChangeListener2::~OPropertyChangeListener2()

{

    if (m_xAdapter.is())

        m_xAdapter->onListenerDestruction();

}

void OPropertyChangeListener2::disposeAdapter(std::unique_lock<std::mutex>& rGuard)

{

    if (m_xAdapter.is())

        m_xAdapter->dispose(rGuard);

    // will automatically set a new adapter

    OSL_ENSURE(!m_xAdapter.is(), "OPropertyChangeListener::disposeAdapter: what did dispose do?");

}

void OPropertyChangeListener2::setAdapter(std::unique_lock<std::mutex>& /*rGuard*/,

                                          OPropertyChangeMultiplexer2* pAdapter)

{

    m_xAdapter = pAdapter;

}

OPropertyChangeMultiplexer2::OPropertyChangeMultiplexer2(std::mutex& rMutex,

                                                         std::unique_lock<std::mutex>& rGuard,

                                                         OPropertyChangeListener2* _pListener,

                                                         const Reference<XPropertySet>& _rxSet)

    : m_rMutex(rMutex)

    , m_xSet(_rxSet)

    , m_pListener(_pListener)

    , m_nLockCount(0)

    , m_bListening(false)

{

    m_pListener->setAdapter(rGuard, this);

}

OPropertyChangeMultiplexer2::~OPropertyChangeMultiplexer2() {}

void OPropertyChangeMultiplexer2::lock() { ++m_nLockCount; }

void OPropertyChangeMultiplexer2::unlock() { --m_nLockCount; }

void OPropertyChangeMultiplexer2::dispose(std::unique_lock<std::mutex>& rGuard)

{

    if (!m_bListening)

        return;

    Reference<XPropertyChangeListener> xPreventDelete(this);

    for (const OUString& rProp : m_aProperties)

        m_xSet->removePropertyChangeListener(rProp, static_cast<XPropertyChangeListener*>(this));

    m_pListener->setAdapter(rGuard, nullptr);

    m_pListener = nullptr;

    m_bListening = false;

    m_xSet = nullptr;

}

void OPropertyChangeMultiplexer2::onListenerDestruction()

{

    if (!m_bListening)

        return;

    Reference<XPropertyChangeListener> xPreventDelete(this);

    for (const OUString& rProp : m_aProperties)

        m_xSet->removePropertyChangeListener(rProp, static_cast<XPropertyChangeListener*>(this));

}

// XEventListener

void SAL_CALL OPropertyChangeMultiplexer2::disposing(const EventObject& /*_rSource*/)

{

    std::unique_lock g(m_rMutex);

    // disconnect the listener

    if (m_pListener)

        m_pListener->setAdapter(g, nullptr);

    m_pListener = nullptr;

    m_bListening = false;

    m_xSet = nullptr;

}

// XPropertyChangeListener

void SAL_CALL OPropertyChangeMultiplexer2::propertyChange(const PropertyChangeEvent& _rEvent)

{

    if (m_pListener && !locked())

        m_pListener->_propertyChanged(_rEvent);

}

void OPropertyChangeMultiplexer2::addProperty(const OUString& _sPropertyName)

{

    if (m_xSet.is())

    {

        m_xSet->addPropertyChangeListener(_sPropertyName,

                                          static_cast<XPropertyChangeListener*>(this));

        m_aProperties.push_back(_sPropertyName);

        m_bListening = true;

    }

}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */