/* -*- 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 <dispatch/loaddispatcher.hxx>

#include <loadenv/loadenvexception.hxx>

#include <sal/log.hxx>

#include <com/sun/star/frame/DispatchResultState.hpp>

#include <utility>

namespace framework{

LoadDispatcher::LoadDispatcher(const css::uno::Reference< css::uno::XComponentContext >& xContext    ,

                               const css::uno::Reference< css::frame::XFrame >&          xOwnerFrame ,

                               OUString                                                  sTargetName ,

                                     sal_Int32                                           nSearchFlags)

    : m_xOwnerFrame (xOwnerFrame )

    , m_sTarget     (std::move(sTargetName ))

    , m_nSearchFlags(nSearchFlags)

    , m_aLoader     (xContext    )

{

}

LoadDispatcher::~LoadDispatcher()

{

}

void SAL_CALL LoadDispatcher::dispatchWithNotification(const css::util::URL&                                             aURL      ,

                                                       const css::uno::Sequence< css::beans::PropertyValue >&            lArguments,

                                                       const css::uno::Reference< css::frame::XDispatchResultListener >& xListener )

{

    impl_dispatch( aURL, lArguments, xListener );

}

void SAL_CALL LoadDispatcher::dispatch(const css::util::URL&                                  aURL      ,

                                       const css::uno::Sequence< css::beans::PropertyValue >& lArguments)

{

    impl_dispatch( aURL, lArguments, css::uno::Reference< css::frame::XDispatchResultListener >() );

}

css::uno::Any SAL_CALL LoadDispatcher::dispatchWithReturnValue( const css::util::URL& rURL,

                                                                const css::uno::Sequence< css::beans::PropertyValue >& lArguments )

{

    return impl_dispatch( rURL, lArguments, css::uno::Reference< css::frame::XDispatchResultListener >());

}

void SAL_CALL LoadDispatcher::addStatusListener(const css::uno::Reference< css::frame::XStatusListener >& /*xListener*/,

                                                const css::util::URL&                                     /*aURL*/     )

{

}

void SAL_CALL LoadDispatcher::removeStatusListener(const css::uno::Reference< css::frame::XStatusListener >& /*xListener*/,

                                                   const css::util::URL&                                     /*aURL*/     )

{

}

css::uno::Any LoadDispatcher::impl_dispatch( const css::util::URL& rURL,

                                             const css::uno::Sequence< css::beans::PropertyValue >& lArguments,

                                             const css::uno::Reference< css::frame::XDispatchResultListener >& xListener )

{

    // Attention: May be nobody outside hold such temp. dispatch object alive (because

    // the container in which we resist isn't implemented threadsafe but updated by a timer

    // and clear our reference...) we should hold us self alive!

    css::uno::Reference< css::uno::XInterface > xThis(static_cast< css::frame::XNotifyingDispatch* >(this), css::uno::UNO_QUERY);

    osl::MutexGuard g(m_mutex);

    // We are the only client of this load env object... but

    // may a dispatch request before is still in progress (?!).

    // Then we should wait a little bit and block this new request.

    // In case we run into the timeout, we should reject this new request

    // and return "FAILED" as result. Otherwise we can start this new operation.

    if (!m_aLoader.waitWhileLoading(2000)) // => 2 sec.

    {

        if (xListener.is())

            xListener->dispatchFinished(

                css::frame::DispatchResultEvent(xThis, css::frame::DispatchResultState::DONTKNOW, css::uno::Any())); // DONTKNOW? ... not really started ... not really failed :-)

    }

    css::uno::Reference< css::frame::XFrame > xBaseFrame(m_xOwnerFrame.get(), css::uno::UNO_QUERY);

    if (!xBaseFrame.is() && xListener.is())

        xListener->dispatchFinished(

            css::frame::DispatchResultEvent(xThis, css::frame::DispatchResultState::FAILURE, css::uno::Any()));

    // OK ... now the internal loader seems to be usable for new requests

    // and our owner frame seems to be valid for such operations.

    // Initialize it with all new but needed properties and start the loading.

    css::uno::Reference< css::lang::XComponent > xComponent;

    try

    {

        m_aLoader.startLoading( rURL.Complete, lArguments, xBaseFrame, m_sTarget, m_nSearchFlags, LoadEnvFeatures::AllowContentHandler | LoadEnvFeatures::WorkWithUI);

        m_aLoader.waitWhileLoading(); // wait for ever!

        xComponent = m_aLoader.getTargetComponent();

        // TODO thinking about asynchronous operations and listener support

    }

    catch(const LoadEnvException& e)

    {

        SAL_WARN(

            "fwk.dispatch",

            "caught LoadEnvException " << +e.m_nID << " \"" << e.m_sMessage

                << "\""

                << (e.m_exOriginal.has<css::uno::Exception>()

                    ? (", " + e.m_exOriginal.getValueTypeName() + " \""

                       + e.m_exOriginal.get<css::uno::Exception>().Message

                       + "\"")

                    : OUString())

                << " while dispatching <" << rURL.Complete << ">");

        xComponent.clear();

    }

    if (xListener.is())

    {

        if (xComponent.is())

            xListener->dispatchFinished(

                css::frame::DispatchResultEvent(xThis, css::frame::DispatchResultState::SUCCESS, css::uno::Any()));

        else

            xListener->dispatchFinished(

                css::frame::DispatchResultEvent(xThis, css::frame::DispatchResultState::FAILURE, css::uno::Any()));

    }

    // return the model - like loadComponentFromURL()

    css::uno::Any aRet;

    if ( xComponent.is () )

        aRet <<= xComponent;

    return aRet;

}

} // namespace framework

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