/* -*- 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 <accessibility/vclxaccessiblemenubar.hxx>

#include <com/sun/star/accessibility/AccessibleRole.hpp>

#include <comphelper/accessiblecontexthelper.hxx>

#include <vcl/svapp.hxx>

#include <vcl/window.hxx>

#include <vcl/menu.hxx>

#include <vcl/settings.hxx>

#include <vcl/vclevent.hxx>

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

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

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

using namespace ::comphelper;

VCLXAccessibleMenuBar::VCLXAccessibleMenuBar( Menu* pMenu )

    :OAccessibleMenuComponent( pMenu )

{

    if ( pMenu )

    {

        m_pWindow = pMenu->GetWindow();

        if ( m_pWindow )

            m_pWindow->AddEventListener( LINK( this, VCLXAccessibleMenuBar, WindowEventListener ) );

    }

}

VCLXAccessibleMenuBar::~VCLXAccessibleMenuBar()

{

    if ( m_pWindow )

        m_pWindow->RemoveEventListener( LINK( this, VCLXAccessibleMenuBar, WindowEventListener ) );

}

bool VCLXAccessibleMenuBar::IsFocused()

{

    bool bFocused = false;

    if ( m_pWindow && m_pWindow->HasFocus() && !IsChildHighlighted() )

        bFocused = true;

    return bFocused;

}

IMPL_LINK( VCLXAccessibleMenuBar, WindowEventListener, VclWindowEvent&, rEvent, void )

{

    assert( rEvent.GetWindow() );

    if ( !rEvent.GetWindow()->IsAccessibilityEventsSuppressed() || ( rEvent.GetId() == VclEventId::ObjectDying ) )

    {

        ProcessWindowEvent( rEvent );

    }

}

void VCLXAccessibleMenuBar::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )

{

    switch ( rVclWindowEvent.GetId() )

    {

        case VclEventId::WindowGetFocus:

        case VclEventId::WindowLoseFocus:

        {

            SetFocused( rVclWindowEvent.GetId() == VclEventId::WindowGetFocus );

        }

        break;

        case VclEventId::ObjectDying:

        {

            if ( m_pWindow )

            {

                m_pWindow->RemoveEventListener( LINK( this, VCLXAccessibleMenuBar, WindowEventListener ) );

                m_pWindow = nullptr;

            }

        }

        break;

        default:

        {

        }

        break;

    }

}

// XComponent

void VCLXAccessibleMenuBar::disposing()

{

    OAccessibleMenuComponent::disposing();

    if ( m_pWindow )

    {

        m_pWindow->RemoveEventListener( LINK( this, VCLXAccessibleMenuBar, WindowEventListener ) );

        m_pWindow = nullptr;

    }

}

// XServiceInfo

OUString VCLXAccessibleMenuBar::getImplementationName()

{

    return u"com.sun.star.comp.toolkit.AccessibleMenuBar"_ustr;

}

Sequence< OUString > VCLXAccessibleMenuBar::getSupportedServiceNames()

{

    return { u"com.sun.star.awt.AccessibleMenuBar"_ustr };

}

// XAccessibleContext

sal_Int64 VCLXAccessibleMenuBar::getAccessibleIndexInParent(  )

{

    OExternalLockGuard aGuard( this );

    sal_Int64 nIndexInParent = -1;

    if ( m_pMenu )

    {

        vcl::Window* pWindow = m_pMenu->GetWindow();

        if ( pWindow )

        {

            vcl::Window* pParent = pWindow->GetAccessibleParentWindow();

            if ( pParent )

            {

                for ( sal_uInt16 n = pParent->GetAccessibleChildWindowCount(); n; )

                {

                    vcl::Window* pChild = pParent->GetAccessibleChildWindow( --n );

                    if ( pChild == pWindow )

                    {

                        nIndexInParent = n;

                        break;

                    }

                }

            }

        }

    }

    return nIndexInParent;

}

sal_Int16 VCLXAccessibleMenuBar::getAccessibleRole(  )

{

    OExternalLockGuard aGuard( this );

    return AccessibleRole::MENU_BAR;

}

// XAccessibleExtendedComponent

sal_Int32 VCLXAccessibleMenuBar::getBackground(  )

{

    OExternalLockGuard aGuard( this );

    return sal_Int32(Application::GetSettings().GetStyleSettings().GetMenuBarColor());

}

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