/* -*- 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 <xmloff/XMLEventsImportContext.hxx>

#include <XMLEventImportHelper.hxx>

#include <com/sun/star/document/XEventsSupplier.hpp>

#include <xmloff/xmlimp.hxx>

#include <xmloff/xmlnamespace.hxx>

#include <xmloff/xmltoken.hxx>

#include <xmloff/xmlerror.hxx>

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

using namespace ::xmloff::token;

using ::com::sun::star::beans::PropertyValue;

using ::com::sun::star::container::XNameReplace;

using ::com::sun::star::document::XEventsSupplier;

using ::com::sun::star::lang::IllegalArgumentException;

XMLEventsImportContext::XMLEventsImportContext(SvXMLImport& rImport) :

    SvXMLImportContext(rImport)

{

}

XMLEventsImportContext::XMLEventsImportContext(

    SvXMLImport& rImport,

    const Reference<XEventsSupplier> & xEventsSupplier) :

        SvXMLImportContext(rImport),

        m_xEvents(xEventsSupplier->getEvents())

{

}

XMLEventsImportContext::XMLEventsImportContext(

    SvXMLImport& rImport,

    const Reference<XNameReplace> & xNameReplace) :

        SvXMLImportContext(rImport),

        m_xEvents(xNameReplace)

{

}

XMLEventsImportContext::~XMLEventsImportContext()

{

//  // if, for whatever reason, the object gets destroyed prematurely,

//  // we need to delete the collected events

}

css::uno::Reference< css::xml::sax::XFastContextHandler > XMLEventsImportContext::createFastChildContext(

    sal_Int32 /*nElement*/,

    const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttrList )

{

    // a) search for script:language and script:event-name attribute

    // b) delegate to factory. The factory will:

    //    1) translate XML event name into API event name

    //    2) get proper event context factory from import

    //    3) instantiate context

    // a) search for script:language and script:event-name attribute

    OUString sLanguage;

    OUString sEventName;

    for (auto &aIter : sax_fastparser::castToFastAttributeList( xAttrList ))

    {

        OUString sValue = aIter.toString();

        if (aIter.getToken() == XML_ELEMENT(SCRIPT, XML_EVENT_NAME))

        {

            sEventName = sValue;

        }

        else if (aIter.getToken() == XML_ELEMENT(SCRIPT, XML_LANGUAGE))

        {

            sLanguage = sValue;

            // else: ignore -> let child context handle this

        }

        // else: ignore -> let child context handle this

    }

    // b) delegate to factory

    return GetImport().GetEventImport().CreateContext(

        GetImport(), xAttrList, this, sEventName, sLanguage);

}

void XMLEventsImportContext::SetEvents(

    const Reference<XEventsSupplier> & xEventsSupplier)

{

    if (xEventsSupplier.is())

    {

        SetEvents(xEventsSupplier->getEvents());

    }

}

void XMLEventsImportContext::SetEvents(

    const Reference<XNameReplace> & xNameRepl)

{

    if (xNameRepl.is())

    {

        m_xEvents = xNameRepl;

        // now iterate over vector and a) insert b) delete all elements

        for(const auto& rEvent : m_aCollectEvents)

        {

            AddEventValues(rEvent.first, rEvent.second);

        }

        m_aCollectEvents.clear();

    }

}

void XMLEventsImportContext::GetEventSequence(

    const OUString& rName,

    Sequence<PropertyValue> & rSequence )

{

    // search through the vector

    // (This shouldn't take a lot of time, since this method should only get

    //  called if only one (or few) events are being expected)

    auto aIter = std::find_if(m_aCollectEvents.begin(), m_aCollectEvents.end(),

        [&rName](EventNameValuesPair& rEvent) { return rEvent.first == rName; });

    // if we're not at the end, set the sequence

    if (aIter != m_aCollectEvents.end())

    {

        rSequence = aIter->second;

    }

}

void XMLEventsImportContext::AddEventValues(

    const OUString& rEventName,

    const Sequence<PropertyValue> & rValues )

{

    // if we already have the events, set them; else just collect

    if (m_xEvents.is())

    {

        // set event (if name is known)

        if (m_xEvents->hasByName(rEventName))

        {

            try

            {

                m_xEvents->replaceByName(rEventName, Any(rValues));

            } catch ( const IllegalArgumentException & rException )

            {

                Sequence<OUString> aMsgParams { rEventName };

                GetImport().SetError(XMLERROR_FLAG_ERROR |

                                     XMLERROR_ILLEGAL_EVENT,

                                     aMsgParams, rException.Message, nullptr);

            }

        }

    }

    else

    {

        m_aCollectEvents.emplace_back(rEventName, rValues);

    }

}

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