/* -*- 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/document/EventObject.hpp>

#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>

#include <com/sun/star/uno/XComponentContext.hpp>

#include <cppuhelper/supportsservice.hxx>

#include <osl/diagnose.h>

#include <sal/log.hxx>

#include <shapecollection.hxx>

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

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

SvxShapeCollection::SvxShapeCollection() noexcept

{

}

// XInterface

void SvxShapeCollection::release() noexcept

{

    uno::Reference< uno::XInterface > x( xDelegator );

    if (! x.is())

    {

        if (osl_atomic_decrement( &m_refCount ) == 0)

        {

            if (! bDisposed)

            {

                uno::Reference< uno::XInterface > xHoldAlive( getXWeak() );

                // First dispose

                try

                {

                    dispose();

                }

                catch(css::uno::Exception&)

                {

                    // release should not throw exceptions

                }

                // only the alive ref holds the object

                OSL_ASSERT( m_refCount == 1 );

                // destroy the object if xHoldAlive decrement the refcount to 0

                return;

            }

        }

        // restore the reference count

        osl_atomic_increment( &m_refCount );

    }

    OWeakAggObject::release();

}

// XComponent

void SvxShapeCollection::dispose()

{

    // An frequently programming error is to release the last

    // reference to this object in the disposing message.

    // Make it robust, hold a self Reference.

    uno::Reference< lang::XComponent > xSelf( this );

    // Guard dispose against multiple threading

    // Remark: It is an error to call dispose more than once

    {

        std::unique_lock aGuard( m_aMutex );

        if( bDisposed || bInDispose )

            return;

        // only one call go into this section

        bInDispose = true;

    }

    // Do not hold the mutex because we are broadcasting

    // Create an event with this as sender

    try

    {

        document::EventObject aEvt;

        aEvt.Source = uno::Reference< uno::XInterface >::query( static_cast<lang::XComponent *>(this) );

        // inform all listeners to release this object

        // The listener container are automatically cleared

        std::unique_lock g(m_aMutex);

        maEventListeners.disposeAndClear( g, aEvt );

        maShapeContainer.clear();

        // bDisposed and bInDispose must be set in this order.

        bDisposed = true;

        bInDispose = false;

    }

    catch(const css::uno::Exception&)

    {

        // catch exception and throw again but signal that

        // the object was disposed. Dispose should be called

        // only once.

        bDisposed = true;

        bInDispose = false;

        throw;

    }

}

// XComponent

void SAL_CALL SvxShapeCollection::addEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener )

{

    std::unique_lock g(m_aMutex);

    maEventListeners.addInterface( g, aListener );

}

// XComponent

void SAL_CALL SvxShapeCollection::removeEventListener( const css::uno::Reference< css::lang::XEventListener >& aListener )

{

    std::unique_lock g(m_aMutex);

    maEventListeners.removeInterface( g, aListener );

}

// XShapes

void SAL_CALL SvxShapeCollection::add( const Reference< drawing::XShape >& xShape )

{

    std::unique_lock g(m_aMutex);

    maShapeContainer.push_back( xShape );

}

void SAL_CALL SvxShapeCollection::remove( const uno::Reference< drawing::XShape >& xShape )

{

    std::unique_lock g(m_aMutex);

    std::erase(maShapeContainer, xShape);

}

sal_Int32 SAL_CALL SvxShapeCollection::getCount()

{

    std::unique_lock g(m_aMutex);

    return maShapeContainer.size();

}

uno::Any SAL_CALL SvxShapeCollection::getByIndex( sal_Int32 Index )

{

    if( Index < 0 || Index >= getCount() )

        throw lang::IndexOutOfBoundsException();

    std::unique_lock g(m_aMutex);

    Reference<drawing::XShape> xShape = maShapeContainer[Index];

    return uno::Any( xShape );

}

std::vector<css::uno::Reference<css::drawing::XShape>> SvxShapeCollection::getAllShapes() const

{

    std::unique_lock g(m_aMutex);

    return maShapeContainer;

}

// XElementAccess

uno::Type SAL_CALL SvxShapeCollection::getElementType()

{

    return cppu::UnoType<drawing::XShape>::get();

}

sal_Bool SAL_CALL SvxShapeCollection::hasElements()

{

    return getCount() != 0;

}

// XServiceInfo

OUString SAL_CALL SvxShapeCollection::getImplementationName()

{

    return u"com.sun.star.drawing.SvxShapeCollection"_ustr;

}

sal_Bool SAL_CALL SvxShapeCollection::supportsService( const OUString& ServiceName )

{

    return cppu::supportsService( this, ServiceName);

}

uno::Sequence< OUString > SAL_CALL SvxShapeCollection::getSupportedServiceNames()

{

    return { u"com.sun.star.drawing.Shapes"_ustr, u"com.sun.star.drawing.ShapeCollection"_ustr };

}

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *

com_sun_star_drawing_SvxShapeCollection_get_implementation(

    css::uno::XComponentContext *,

    css::uno::Sequence<css::uno::Any> const &)

{

    return cppu::acquire(new SvxShapeCollection);

}

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