/* -*- 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 <DrawModelBroadcaster.hxx>

#include <svx/svdmodel.hxx>

#include <svx/unomod.hxx>

#include <svx/svdobj.hxx>

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

ScDrawModelBroadcaster::ScDrawModelBroadcaster( SdrModel *pDrawModel ) :

    mpDrawModel( pDrawModel )

{

    if (mpDrawModel)

        StartListening( *mpDrawModel );

}

ScDrawModelBroadcaster::~ScDrawModelBroadcaster()

{

    if (mpDrawModel)

        EndListening( *mpDrawModel );

}

void SAL_CALL ScDrawModelBroadcaster::addEventListener( const uno::Reference< document::XEventListener >& xListener )

{

    std::unique_lock aGuard(maListenerMutex);

    maEventListeners.addInterface( aGuard, xListener );

}

void SAL_CALL ScDrawModelBroadcaster::removeEventListener( const uno::Reference< document::XEventListener >& xListener )

{

    std::unique_lock aGuard(maListenerMutex);

    maEventListeners.removeInterface( aGuard, xListener );

}

void SAL_CALL ScDrawModelBroadcaster::addShapeEventListener(

                const css::uno::Reference< css::drawing::XShape >& xShape,

                const uno::Reference< document::XShapeEventListener >& xListener )

{

    assert(xShape.is() && "no shape?");

    std::scoped_lock aGuard(maListenerMutex);

    auto rv = maShapeListeners.emplace(xShape, xListener);

    assert(rv.second && "duplicate listener?");

    (void)rv;

}

void SAL_CALL ScDrawModelBroadcaster::removeShapeEventListener(

                const css::uno::Reference< css::drawing::XShape >& xShape,

                const uno::Reference< document::XShapeEventListener >& xListener )

{

    std::scoped_lock aGuard(maListenerMutex);

    auto it = maShapeListeners.find(xShape);

    if (it != maShapeListeners.end())

    {

        assert(it->second == xListener && "removing wrong listener?");

        (void)xListener;

        maShapeListeners.erase(it);

    }

}

void ScDrawModelBroadcaster::Notify( SfxBroadcaster&,

        const SfxHint& rHint )

{

    if (rHint.GetId() != SfxHintId::ThisIsAnSdrHint)

        return;

    const SdrHint* pSdrHint = static_cast<const SdrHint*>(&rHint);

    document::EventObject aEvent;

    if( !SvxUnoDrawMSFactory::createEvent( mpDrawModel, pSdrHint, aEvent ) )

        return;

    std::unique_lock aGuard(maListenerMutex);

    maEventListeners.forEach(aGuard,

        [&aEvent](const css::uno::Reference<document::XEventListener>& xListener)

        {

            xListener->notifyEvent(aEvent);

        }

    );

    // right now, we're only handling the specific event necessary to fix this performance problem

    if (pSdrHint->GetKind() == SdrHintKind::ObjectChange)

    {

        auto pSdrObject = const_cast<SdrObject*>(pSdrHint->GetObject());

        uno::Reference<drawing::XShape> xShape(pSdrObject->getUnoShape(), uno::UNO_QUERY);

        auto it = maShapeListeners.find(xShape);

        if (it != maShapeListeners.end())

            it->second->notifyShapeEvent(aEvent);

    }

}

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