/* -*- 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 <svx/sidebar/ContextChangeEventMultiplexer.hxx>

#include <com/sun/star/ui/ContextChangeEventObject.hpp>
#include <com/sun/star/ui/XContextChangeEventMultiplexer.hpp>
#include <com/sun/star/ui/ContextChangeEventMultiplexer.hpp>
#include <com/sun/star/frame/ModuleManager.hpp>
#include <comphelper/lok.hxx>
#include <comphelper/processfactory.hxx>
#include <sfx2/lokhelper.hxx>
#include <sfx2/viewsh.hxx>

using namespace css;
using namespace css::uno;


void ContextChangeEventMultiplexer::NotifyContextChange (
    const css::uno::Reference<css::frame::XController>& rxController,
    const vcl::EnumContext::Context eContext)
{
    if (!(rxController.is() && rxController->getFrame().is()))
        return;

    const css::ui::ContextChangeEventObject aEvent(
        rxController,
        GetModuleName(rxController->getFrame()),
        vcl::EnumContext::GetContextName(eContext));

    css::uno::Reference<css::ui::XContextChangeEventMultiplexer> xMultiplexer (
        css::ui::ContextChangeEventMultiplexer::get(
            ::comphelper::getProcessComponentContext()));
    if (xMultiplexer.is())
        xMultiplexer->broadcastContextChangeEvent(aEvent, rxController);

    // notify the LOK too after all the change have taken effect.
    if (comphelper::LibreOfficeKit::isActive())
    {
        SfxLokHelper::notifyContextChange(aEvent);
    }
}


void ContextChangeEventMultiplexer::NotifyContextChange (
    const SfxViewShell* pViewShell,
    const vcl::EnumContext::Context eContext)
{
    if (pViewShell != nullptr)
        NotifyContextChange(pViewShell->GetController(), eContext);
}


OUString ContextChangeEventMultiplexer::GetModuleName (
    const css::uno::Reference<css::frame::XFrame>& rxFrame)
{
    try
    {
        const Reference<frame::XModuleManager> xModuleManager =
            frame::ModuleManager::create( comphelper::getProcessComponentContext() );
        return xModuleManager->identify(rxFrame);
    }
    catch (const Exception&)
    {
        // An exception typically means that a context change is notified
        // during initialization or destruction of a view.
        // Ignore it.
    }
    return vcl::EnumContext::GetApplicationName(
        vcl::EnumContext::Application::NONE);
}

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