/* -*- 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 <config_options.h>

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

#include <cppuhelper/implbase.hxx>

#include <comphelper/comphelperdllapi.h>

#include <rtl/ref.hxx>

#include <mutex>

#include <vector>

namespace com::sun::star::beans

{

class XPropertySet;

}

//= property helper classes

namespace comphelper

{

class OPropertyChangeMultiplexer2;

//= OPropertyChangeListener

/// simple listener adapter for property sets

class UNLESS_MERGELIBS(COMPHELPER_DLLPUBLIC) OPropertyChangeListener2

{

    friend class OPropertyChangeMultiplexer2;

    rtl::Reference<OPropertyChangeMultiplexer2> m_xAdapter;

public:

    virtual ~OPropertyChangeListener2();

    /// @throws css::uno::RuntimeException

    virtual void _propertyChanged(const css::beans::PropertyChangeEvent& _rEvent) = 0;

protected:

    /** If the derivee also owns the mutex which we know as reference, then call this within your

            derivee's dtor.

        */

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

private:

    void setAdapter(std::unique_lock<std::mutex>& rGuard, OPropertyChangeMultiplexer2* _pAdapter);

};

//= OPropertyChangeMultiplexer2

// A copy of OPropertyChangeMultiplexer except that it uses std::mutex instead osl::Mutex

/// multiplexer for property changes

// workaround for incremental linking bugs in MSVC2019

class SAL_DLLPUBLIC_TEMPLATE OPropertyChangeMultiplexer_Base2

    : public cppu::WeakImplHelper<css::beans::XPropertyChangeListener>

{

};

class UNLESS_MERGELIBS(COMPHELPER_DLLPUBLIC) OPropertyChangeMultiplexer2 final

    : public OPropertyChangeMultiplexer_Base2

{

    friend class OPropertyChangeListener2;

    std::mutex& m_rMutex;

    std::vector<OUString> m_aProperties;

    css::uno::Reference<css::beans::XPropertySet> m_xSet;

    OPropertyChangeListener2* m_pListener;

    sal_Int32 m_nLockCount;

    bool m_bListening : 1;

    void onListenerDestruction();

    virtual ~OPropertyChangeMultiplexer2() override;

public:

    OPropertyChangeMultiplexer2(std::mutex& rMutex, std::unique_lock<std::mutex>& rGuard,

                                OPropertyChangeListener2* _pListener,

                                const css::uno::Reference<css::beans::XPropertySet>& _rxSet);

    // XEventListener

    virtual void SAL_CALL disposing(const css::lang::EventObject& Source) override;

    // XPropertyChangeListener

    virtual void SAL_CALL propertyChange(const css::beans::PropertyChangeEvent& evt) override;

    /// incremental lock

    void lock();

    /// incremental unlock

    void unlock();

    /// get the lock count

    sal_Int32 locked() const { return m_nLockCount; }

    void addProperty(const OUString& aPropertyName);

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

};

} // namespace comphelper

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