/* -*- 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 <commandimageprovider.hxx>

#include <com/sun/star/ui/XImageManager.hpp>
#include <com/sun/star/ui/XUIConfigurationManagerSupplier.hpp>
#include <com/sun/star/ui/theModuleUIConfigurationManagerSupplier.hpp>
#include <com/sun/star/frame/ModuleManager.hpp>
#include <com/sun/star/ui/ImageType.hpp>

#include <tools/diagnose_ex.h>


namespace frm
{


    using ::com::sun::star::uno::Reference;
    using ::com::sun::star::uno::UNO_QUERY;
    using ::com::sun::star::uno::UNO_QUERY_THROW;
    using ::com::sun::star::uno::UNO_SET_THROW;
    using ::com::sun::star::uno::Exception;
    using ::com::sun::star::uno::Sequence;
    using ::com::sun::star::uno::XComponentContext;
    using ::com::sun::star::frame::XModel;
    using ::com::sun::star::ui::XImageManager;
    using ::com::sun::star::ui::XUIConfigurationManagerSupplier;
    using ::com::sun::star::ui::XUIConfigurationManager;
    using ::com::sun::star::ui::XModuleUIConfigurationManagerSupplier;
    using ::com::sun::star::ui::theModuleUIConfigurationManagerSupplier;
    using ::com::sun::star::frame::ModuleManager;
    using ::com::sun::star::frame::XModuleManager2;
    using ::com::sun::star::graphic::XGraphic;

    namespace ImageType = ::com::sun::star::ui::ImageType;

    class DocumentCommandImageProvider : public ICommandImageProvider
    {
    public:
        DocumentCommandImageProvider( const Reference<XComponentContext>& _rContext, const Reference< XModel >& _rxDocument )
        {
            impl_init_nothrow( _rContext, _rxDocument );
        }

        // ICommandImageProvider
        virtual CommandImages getCommandImages( const css::uno::Sequence< OUString >& _rCommandURLs, const bool _bLarge ) const override;

    private:
        void    impl_init_nothrow( const Reference<XComponentContext>& _rContext, const Reference< XModel >& _rxDocument );

    private:
        Reference< XImageManager >    m_xDocumentImageManager;
        Reference< XImageManager >    m_xModuleImageManager;
    };


    void DocumentCommandImageProvider::impl_init_nothrow( const Reference<XComponentContext>& _rContext, const Reference< XModel >& _rxDocument )
    {
        OSL_ENSURE( _rxDocument.is(), "DocumentCommandImageProvider::impl_init_nothrow: no document => no images!" );
        if ( !_rxDocument.is() )
            return;

        // obtain the image manager of the document
        try
        {
            Reference< XUIConfigurationManagerSupplier > xSuppUIConfig( _rxDocument, UNO_QUERY_THROW );
            Reference< XUIConfigurationManager > xUIConfig( xSuppUIConfig->getUIConfigurationManager(), UNO_QUERY );
            m_xDocumentImageManager.set( xUIConfig->getImageManager(), UNO_QUERY_THROW );
        }
        catch( const Exception& )
        {
            DBG_UNHANDLED_EXCEPTION("forms.helper");
        }

        // obtain the image manager or the module
        try
        {
            Reference< XModuleManager2 > xModuleManager( ModuleManager::create(_rContext) );
            OUString sModuleID = xModuleManager->identify( _rxDocument );

            Reference< XModuleUIConfigurationManagerSupplier > xSuppUIConfig(
                theModuleUIConfigurationManagerSupplier::get(_rContext) );
            Reference< XUIConfigurationManager > xUIConfig(
                xSuppUIConfig->getUIConfigurationManager( sModuleID ), UNO_SET_THROW );
            m_xModuleImageManager.set( xUIConfig->getImageManager(), UNO_QUERY_THROW );
        }
        catch( const Exception& )
        {
            DBG_UNHANDLED_EXCEPTION("forms.helper");
        }
    }


    CommandImages DocumentCommandImageProvider::getCommandImages( const css::uno::Sequence< OUString >& _rCommandURLs, const bool _bLarge ) const
    {
        const size_t nCommandCount = _rCommandURLs.getLength();
        CommandImages aImages( nCommandCount );
        try
        {
            const sal_Int16 nImageType = ImageType::COLOR_NORMAL
                                       +  ( _bLarge ? ImageType::SIZE_LARGE : ImageType::SIZE_DEFAULT );

            Sequence< Reference< XGraphic > > aDocImages( nCommandCount );
            Sequence< Reference< XGraphic > > aModImages( nCommandCount );

            // first try the document image manager
            if ( m_xDocumentImageManager.is() )
                aDocImages = m_xDocumentImageManager->getImages( nImageType, _rCommandURLs );

            // then the module's image manager
            if ( m_xModuleImageManager.is() )
                aModImages = m_xModuleImageManager->getImages( nImageType, _rCommandURLs );

            ENSURE_OR_THROW( static_cast<size_t>(aDocImages.getLength()) == nCommandCount, "illegal array size returned by getImages (document image manager)" );
            ENSURE_OR_THROW( static_cast<size_t>(aModImages.getLength()) == nCommandCount, "illegal array size returned by getImages (module image manager)" );

            for ( size_t i=0; i<nCommandCount; ++i )
            {
                if ( aDocImages[i].is() )
                    aImages[i] = Image( aDocImages[i] );
                else
                    aImages[i] = Image( aModImages[i] );
            }
        }
        catch( const Exception& )
        {
            DBG_UNHANDLED_EXCEPTION("forms.helper");
        }
        return aImages;
    }


    PCommandImageProvider createDocumentCommandImageProvider(
        const Reference<XComponentContext>& _rContext, const Reference< XModel >& _rxDocument )
    {
        PCommandImageProvider pImageProvider( new DocumentCommandImageProvider( _rContext, _rxDocument ) );
        return pImageProvider;
    }


} // namespace frm


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