/* -*- 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 <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <com/sun/star/accessibility/XAccessibleEventListener.hpp>
#include <com/sun/star/accessibility/AccessibleRelationType.hpp>
#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
#include <cppuhelper/supportsservice.hxx>
#include <toolkit/awt/vclxaccessiblecomponent.hxx>
#include <toolkit/helper/externallock.hxx>
#include <toolkit/awt/vclxwindow.hxx>
#include <toolkit/helper/convert.hxx>
#include <toolkit/awt/vclxfont.hxx>
#include <vcl/dialog.hxx>
#include <vcl/vclevent.hxx>
#include <vcl/window.hxx>
#include <vcl/edit.hxx>
#include <vcl/settings.hxx>
#include <tools/debug.hxx>
#include <unotools/accessiblestatesethelper.hxx>
#include <unotools/accessiblerelationsethelper.hxx>
#include <vcl/svapp.hxx>
#include <vcl/menu.hxx>

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

VCLXAccessibleComponent::VCLXAccessibleComponent( VCLXWindow* pVCLXWindow )
    : OAccessibleExtendedComponentHelper( new VCLExternalSolarLock() )
    , OAccessibleImplementationAccess( )
{
    m_xVCLXWindow = pVCLXWindow;

    m_pSolarLock = static_cast< VCLExternalSolarLock* >( getExternalLock( ) );

    DBG_ASSERT( pVCLXWindow->GetWindow(), "VCLXAccessibleComponent - no window!" );
    m_xEventSource = pVCLXWindow->GetWindow();
    if ( m_xEventSource )
    {
        m_xEventSource->AddEventListener( LINK( this, VCLXAccessibleComponent, WindowEventListener ) );
        m_xEventSource->AddChildEventListener( LINK( this, VCLXAccessibleComponent, WindowChildEventListener ) );
    }

    // announce the XAccessible of our creator to the base class
    lateInit( pVCLXWindow );
}

VCLXWindow* VCLXAccessibleComponent::GetVCLXWindow() const
{
    return m_xVCLXWindow.get();
}

void VCLXAccessibleComponent::DisconnectEvents()
{
    if ( m_xEventSource )
    {
        m_xEventSource->RemoveEventListener( LINK( this, VCLXAccessibleComponent, WindowEventListener ) );
        m_xEventSource->RemoveChildEventListener( LINK( this, VCLXAccessibleComponent, WindowChildEventListener ) );
        m_xEventSource.clear();
    }
}

VCLXAccessibleComponent::~VCLXAccessibleComponent()
{
    ensureDisposed();
    DisconnectEvents();

    delete m_pSolarLock;
    m_pSolarLock = nullptr;
    // This is not completely safe. If we assume that the base class dtor calls some method which
    // uses this lock, the we crash. However, as the base class' dtor does not have a chance to call _out_
    // virtual methods, this is no problem as long as the base class is safe, i.e. does not use the external
    // lock from within it's dtor. At the moment, we _know_ the base class is safe in this respect, so
    // let's assume it keeps this way.
    // @see OAccessibleContextHelper::OAccessibleContextHelper( IMutex* )
}

IMPLEMENT_FORWARD_XINTERFACE3( VCLXAccessibleComponent, OAccessibleExtendedComponentHelper, OAccessibleImplementationAccess, VCLXAccessibleComponent_BASE )
IMPLEMENT_FORWARD_XTYPEPROVIDER3( VCLXAccessibleComponent, OAccessibleExtendedComponentHelper, OAccessibleImplementationAccess, VCLXAccessibleComponent_BASE )

OUString VCLXAccessibleComponent::getImplementationName()
{
    return OUString("com.sun.star.comp.toolkit.AccessibleWindow");
}

sal_Bool VCLXAccessibleComponent::supportsService( const OUString& rServiceName )
{
    return cppu::supportsService(this, rServiceName);
}

uno::Sequence< OUString > VCLXAccessibleComponent::getSupportedServiceNames()
{
    uno::Sequence< OUString > aNames { "com.sun.star.awt.AccessibleWindow" };
    return aNames;
}

IMPL_LINK( VCLXAccessibleComponent, WindowEventListener, VclWindowEvent&, rEvent, void )
{
    /* Ignore VclEventId::WindowEndPopupMode, because the UNO accessibility wrapper
     * might have been destroyed by the previous VCLEventListener (if no AT tool
     * is running), e.g. sub-toolbars in impress.
     */
    if ( m_xVCLXWindow.is() /* #122218# */ && (rEvent.GetId() != VclEventId::WindowEndPopupMode) )
    {
        DBG_ASSERT( rEvent.GetWindow(), "Window???" );
        if( !rEvent.GetWindow()->IsAccessibilityEventsSuppressed() || ( rEvent.GetId() == VclEventId::ObjectDying ) )
        {
            ProcessWindowEvent( rEvent );
        }
    }
}

IMPL_LINK( VCLXAccessibleComponent, WindowChildEventListener, VclWindowEvent&, rEvent, void )
{
    if ( m_xVCLXWindow.is() /* #i68079# */ )
    {
        DBG_ASSERT( rEvent.GetWindow(), "Window???" );
        if( !rEvent.GetWindow()->IsAccessibilityEventsSuppressed() )
        {
            // #103087# to prevent an early release of the component
            uno::Reference< accessibility::XAccessibleContext > xTmp = this;

            ProcessWindowChildEvent( rEvent );
        }
    }
}

uno::Reference< accessibility::XAccessible > VCLXAccessibleComponent::GetChildAccessible( const VclWindowEvent& rVclWindowEvent )
{
    // checks if the data in the window event is our direct child
    // and returns its accessible

    // MT: Change this later, normally a show/hide event shouldn't have the vcl::Window* in pData.
    vcl::Window* pChildWindow = static_cast<vcl::Window *>(rVclWindowEvent.GetData());
    if( pChildWindow && GetWindow() == pChildWindow->GetAccessibleParentWindow() )
        return pChildWindow->GetAccessible( rVclWindowEvent.GetId() == VclEventId::WindowShow );
    else
        return uno::Reference< accessibility::XAccessible > ();
}

void VCLXAccessibleComponent::ProcessWindowChildEvent( const VclWindowEvent& rVclWindowEvent )
{
    uno::Any aOldValue, aNewValue;
    uno::Reference< accessibility::XAccessible > xAcc;

    switch ( rVclWindowEvent.GetId() )
    {
        case VclEventId::WindowShow:  // send create on show for direct accessible children
        {
            xAcc = GetChildAccessible( rVclWindowEvent );
            if( xAcc.is() )
            {
                aNewValue <<= xAcc;
                NotifyAccessibleEvent( accessibility::AccessibleEventId::CHILD, aOldValue, aNewValue );
            }
        }
        break;
        case VclEventId::WindowHide:  // send destroy on hide for direct accessible children
        {
            xAcc = GetChildAccessible( rVclWindowEvent );
            if( xAcc.is() )
            {
                aOldValue <<= xAcc;
                NotifyAccessibleEvent( accessibility::AccessibleEventId::CHILD, aOldValue, aNewValue );
            }
        }
        break;
        default: break;
    }
}

void VCLXAccessibleComponent::ProcessWindowEvent( const VclWindowEvent& rVclWindowEvent )
{
    uno::Any aOldValue, aNewValue;

    vcl::Window* pAccWindow = rVclWindowEvent.GetWindow();
    assert(pAccWindow && "VCLXAccessibleComponent::ProcessWindowEvent - Window?");

    switch ( rVclWindowEvent.GetId() )
    {
        case VclEventId::ObjectDying:
        {
            DisconnectEvents();
            m_xVCLXWindow.clear();
        }
        break;
        case VclEventId::WindowChildDestroyed:
        {
            vcl::Window* pWindow = static_cast<vcl::Window*>(rVclWindowEvent.GetData());
            DBG_ASSERT( pWindow, "VclEventId::WindowChildDestroyed - Window=?" );
            if ( pWindow->GetAccessible( false ).is() )
            {
                aOldValue <<= pWindow->GetAccessible( false );
                NotifyAccessibleEvent( accessibility::AccessibleEventId::CHILD, aOldValue, aNewValue );
            }
        }
        break;
        case VclEventId::WindowActivate:
        {
            // avoid notification if a child frame is already active
            // only one frame may be active at a given time
            if ( !pAccWindow->HasActiveChildFrame() &&
                 ( getAccessibleRole() == accessibility::AccessibleRole::FRAME ||
                   getAccessibleRole() == accessibility::AccessibleRole::ALERT ||
                   getAccessibleRole() == accessibility::AccessibleRole::DIALOG ) )  // #i18891#
            {
                aNewValue <<= accessibility::AccessibleStateType::ACTIVE;
                NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
            }
        }
        break;
        case VclEventId::WindowDeactivate:
        {
            if ( getAccessibleRole() == accessibility::AccessibleRole::FRAME ||
                 getAccessibleRole() == accessibility::AccessibleRole::ALERT ||
                 getAccessibleRole() == accessibility::AccessibleRole::DIALOG )  // #i18891#
            {
                aOldValue <<= accessibility::AccessibleStateType::ACTIVE;
                NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
            }
        }
        break;
        case VclEventId::WindowGetFocus:
        case VclEventId::ControlGetFocus:
        {
            if( (pAccWindow->IsCompoundControl() && rVclWindowEvent.GetId() == VclEventId::ControlGetFocus) ||
                (!pAccWindow->IsCompoundControl() && rVclWindowEvent.GetId() == VclEventId::WindowGetFocus) )
            {
                // if multiple listeners were registered it is possible that the
                // focus was changed during event processing (eg SfxTopWindow )
                // #106082# allow ChildPathFocus only for CompoundControls, for windows the focus must be in the window itself
                if( (pAccWindow->IsCompoundControl() && pAccWindow->HasChildPathFocus()) ||
                    (!pAccWindow->IsCompoundControl() && pAccWindow->HasFocus()) )
                {
                    aNewValue <<= accessibility::AccessibleStateType::FOCUSED;
                    NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
                }
            }
        }
        break;
        case VclEventId::WindowLoseFocus:
        case VclEventId::ControlLoseFocus:
        {
            if( (pAccWindow->IsCompoundControl() && rVclWindowEvent.GetId() == VclEventId::ControlLoseFocus) ||
                (!pAccWindow->IsCompoundControl() && rVclWindowEvent.GetId() == VclEventId::WindowLoseFocus) )
            {
                aOldValue <<= accessibility::AccessibleStateType::FOCUSED;
                NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
            }
        }
        break;
        case VclEventId::WindowFrameTitleChanged:
        {
            OUString aOldName( *static_cast<OUString*>(rVclWindowEvent.GetData()) );
            OUString aNewName( getAccessibleName() );
            aOldValue <<= aOldName;
            aNewValue <<= aNewName;
            NotifyAccessibleEvent( accessibility::AccessibleEventId::NAME_CHANGED, aOldValue, aNewValue );
        }
        break;
        case VclEventId::WindowEnabled:
        {
            aNewValue <<= accessibility::AccessibleStateType::ENABLED;
            NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
            aNewValue <<= accessibility::AccessibleStateType::SENSITIVE;
            NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
        }
        break;
        case VclEventId::WindowDisabled:
        {
            aOldValue <<= accessibility::AccessibleStateType::SENSITIVE;
            NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );

            aOldValue <<= accessibility::AccessibleStateType::ENABLED;
            NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
        }
        break;
        case VclEventId::WindowMove:
        case VclEventId::WindowResize:
        {
            NotifyAccessibleEvent( accessibility::AccessibleEventId::BOUNDRECT_CHANGED, aOldValue, aNewValue );
        }
        break;
        case VclEventId::WindowMenubarAdded:
        {
            MenuBar* pMenuBar = static_cast<MenuBar*>(rVclWindowEvent.GetData());
            if ( pMenuBar )
            {
                uno::Reference< accessibility::XAccessible > xChild( pMenuBar->GetAccessible() );
                if ( xChild.is() )
                {
                    aNewValue <<= xChild;
                    NotifyAccessibleEvent( accessibility::AccessibleEventId::CHILD, aOldValue, aNewValue );
                }
            }
        }
        break;
        case VclEventId::WindowMenubarRemoved:
        {
            MenuBar* pMenuBar = static_cast<MenuBar*>(rVclWindowEvent.GetData());
            if ( pMenuBar )
            {
                uno::Reference< accessibility::XAccessible > xChild( pMenuBar->GetAccessible() );
                if ( xChild.is() )
                {
                    aOldValue <<= xChild;
                    NotifyAccessibleEvent( accessibility::AccessibleEventId::CHILD, aOldValue, aNewValue );
                }
            }
        }
        break;
        case VclEventId::WindowMinimize:
        {
            aNewValue <<= accessibility::AccessibleStateType::ICONIFIED;
            NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
        }
        break;
        case VclEventId::WindowNormalize:
        {
            aOldValue <<= accessibility::AccessibleStateType::ICONIFIED;
            NotifyAccessibleEvent( accessibility::AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
        }
        break;
        default:
        {
        }
        break;
    }
}

void VCLXAccessibleComponent::disposing()
{
    DisconnectEvents();

    OAccessibleExtendedComponentHelper::disposing();

    m_xVCLXWindow.clear();
}

VclPtr<vcl::Window> VCLXAccessibleComponent::GetWindow() const
{
    return GetVCLXWindow() ? GetVCLXWindow()->GetWindow()
                           : VclPtr<vcl::Window>();
}

void VCLXAccessibleComponent::FillAccessibleRelationSet( utl::AccessibleRelationSetHelper& rRelationSet )
{
    VclPtr<vcl::Window> pWindow = GetWindow();
    if ( pWindow )
    {
        vcl::Window *pLabeledBy = pWindow->GetAccessibleRelationLabeledBy();
        if ( pLabeledBy && pLabeledBy != pWindow )
        {
            uno::Sequence< uno::Reference< uno::XInterface > > aSequence { pLabeledBy->GetAccessible() };
            rRelationSet.AddRelation( accessibility::AccessibleRelation( accessibility::AccessibleRelationType::LABELED_BY, aSequence ) );
        }

        vcl::Window* pLabelFor = pWindow->GetAccessibleRelationLabelFor();
        if ( pLabelFor && pLabelFor != pWindow )
        {
            uno::Sequence< uno::Reference< uno::XInterface > > aSequence { pLabelFor->GetAccessible() };
            rRelationSet.AddRelation( accessibility::AccessibleRelation( accessibility::AccessibleRelationType::LABEL_FOR, aSequence ) );
        }

        vcl::Window* pMemberOf = pWindow->GetAccessibleRelationMemberOf();
        if ( pMemberOf && pMemberOf != pWindow )
        {
            uno::Sequence< uno::Reference< uno::XInterface > > aSequence { pMemberOf->GetAccessible() };
            rRelationSet.AddRelation( accessibility::AccessibleRelation( accessibility::AccessibleRelationType::MEMBER_OF, aSequence ) );
        }
    }
}

void VCLXAccessibleComponent::FillAccessibleStateSet( utl::AccessibleStateSetHelper& rStateSet )
{
    VclPtr<vcl::Window> pWindow = GetWindow();
    if ( pWindow )
    {
        if ( pWindow->IsVisible() )
        {
            rStateSet.AddState( accessibility::AccessibleStateType::VISIBLE );
            rStateSet.AddState( accessibility::AccessibleStateType::SHOWING );
        }
        else
        {
            rStateSet.AddState( accessibility::AccessibleStateType::INVALID );
        }

        if ( pWindow->IsEnabled() )
        {
            rStateSet.AddState( accessibility::AccessibleStateType::ENABLED );
            rStateSet.AddState( accessibility::AccessibleStateType::SENSITIVE );
        }

        if ( pWindow->HasChildPathFocus() &&
             ( getAccessibleRole() == accessibility::AccessibleRole::FRAME ||
               getAccessibleRole() == accessibility::AccessibleRole::ALERT ||
               getAccessibleRole() == accessibility::AccessibleRole::DIALOG ) )  // #i18891#
            rStateSet.AddState( accessibility::AccessibleStateType::ACTIVE );

        if ( pWindow->HasFocus() || ( pWindow->IsCompoundControl() && pWindow->HasChildPathFocus() ) )
            rStateSet.AddState( accessibility::AccessibleStateType::FOCUSED );

        if ( pWindow->IsWait() )
            rStateSet.AddState( accessibility::AccessibleStateType::BUSY );

        if ( pWindow->GetStyle() & WB_SIZEABLE )
            rStateSet.AddState( accessibility::AccessibleStateType::RESIZABLE );
        // 6. frame doesn't have MOVABLE state
        // 10. for password text, where is the sensitive state?
        if( ( getAccessibleRole() == accessibility::AccessibleRole::FRAME ||getAccessibleRole() == accessibility::AccessibleRole::DIALOG )&& pWindow->GetStyle() & WB_MOVEABLE )
            rStateSet.AddState( accessibility::AccessibleStateType::MOVEABLE );
        if( pWindow->IsDialog() )
        {
            Dialog *pDlg = static_cast< Dialog* >( pWindow.get() );
            if( pDlg->IsInExecute() )
                rStateSet.AddState( accessibility::AccessibleStateType::MODAL );
        }
        //If a combobox or list's edit child isn't read-only,EDITABLE state
        //should be set.
        if( pWindow && pWindow->GetType() == WindowType::COMBOBOX )
        {
            if( !( pWindow->GetStyle() & WB_READONLY) ||
                !static_cast<Edit*>(pWindow.get())->IsReadOnly() )
                    rStateSet.AddState( accessibility::AccessibleStateType::EDITABLE );
        }

        VclPtr<vcl::Window> pChild = pWindow->GetWindow( GetWindowType::FirstChild );

        while( pWindow && pChild )
        {
            VclPtr<vcl::Window> pWinTemp = pChild->GetWindow( GetWindowType::FirstChild );
            if( pWinTemp && pWinTemp->GetType() == WindowType::EDIT )
            {
                if( !( pWinTemp->GetStyle() & WB_READONLY) ||
                    !static_cast<Edit*>(pWinTemp.get())->IsReadOnly() )
                    rStateSet.AddState( accessibility::AccessibleStateType::EDITABLE );
                break;
            }
            if( pChild->GetType() == WindowType::EDIT )
            {
                if( !( pChild->GetStyle() & WB_READONLY) ||
                    !static_cast<Edit*>(pChild.get())->IsReadOnly())
                    rStateSet.AddState( accessibility::AccessibleStateType::EDITABLE );
                break;
            }
            pChild = pChild->GetWindow( GetWindowType::Next );
        }
    }
    else
    {
        rStateSet.AddState( accessibility::AccessibleStateType::DEFUNC );
    }

/*

MUST BE SET FROM DERIVED CLASSES:

CHECKED
COLLAPSED
EXPANDED
EXPANDABLE
EDITABLE
FOCUSABLE
HORIZONTAL
VERTICAL
ICONIFIED
MULTILINE
MULTI_SELECTABLE
PRESSED
SELECTABLE
SELECTED
SINGLE_LINE
TRANSIENT

    */
}


// accessibility::XAccessibleContext
sal_Int32 VCLXAccessibleComponent::getAccessibleChildCount()
{
    OExternalLockGuard aGuard( this );

    sal_Int32 nChildren = 0;
    if ( GetWindow() )
        nChildren = GetWindow()->GetAccessibleChildWindowCount();

    return nChildren;
}

uno::Reference< accessibility::XAccessible > VCLXAccessibleComponent::getAccessibleChild( sal_Int32 i )
{
    OExternalLockGuard aGuard( this );

    if ( i >= getAccessibleChildCount() )
        throw lang::IndexOutOfBoundsException();

    uno::Reference< accessibility::XAccessible > xAcc;
    if ( GetWindow() )
    {
        vcl::Window* pChild = GetWindow()->GetAccessibleChildWindow( (sal_uInt16)i );
        if ( pChild )
            xAcc = pChild->GetAccessible();
    }

    return xAcc;
}

uno::Reference< accessibility::XAccessible > VCLXAccessibleComponent::getVclParent() const
{
    uno::Reference< accessibility::XAccessible > xAcc;
    if ( GetWindow() )
    {
        vcl::Window* pParent = GetWindow()->GetAccessibleParentWindow();
        if ( pParent )
            xAcc = pParent->GetAccessible();
    }
    return xAcc;
}

uno::Reference< accessibility::XAccessible > VCLXAccessibleComponent::getAccessibleParent(  )
{
    OExternalLockGuard aGuard( this );

    uno::Reference< accessibility::XAccessible > xAcc( implGetForeignControlledParent() );
    if ( !xAcc.is() )
        // we do _not_ have a foreign-controlled parent -> default to our VCL parent
        xAcc = getVclParent();

    return xAcc;
}

sal_Int32 VCLXAccessibleComponent::getAccessibleIndexInParent(  )
{
    OExternalLockGuard aGuard( this );

    sal_Int32 nIndex = -1;

    uno::Reference< accessibility::XAccessible > xAcc( implGetForeignControlledParent() );
    if ( xAcc.is() )
    {   // we _do_ have a foreign-controlled parent -> use the base class' implementation,
        // which goes the UNO way
        nIndex = OAccessibleExtendedComponentHelper::getAccessibleIndexInParent( );
    }
    else
    {
        if ( GetWindow() )
        {
            vcl::Window* pParent = GetWindow()->GetAccessibleParentWindow();
            if ( pParent )
            {
                //  Iterate over all the parent's children and search for this object.
                // this should be compatible with the code in SVX
                uno::Reference< accessibility::XAccessible > xParentAcc( pParent->GetAccessible() );
                if ( xParentAcc.is() )
                {
                    uno::Reference< accessibility::XAccessibleContext > xParentContext ( xParentAcc->getAccessibleContext() );
                    if ( xParentContext.is() )
                    {
                        sal_Int32 nChildCount = xParentContext->getAccessibleChildCount();
                        for ( sal_Int32 i=0; i<nChildCount; i++ )
                        {
                            uno::Reference< accessibility::XAccessible > xChild( xParentContext->getAccessibleChild(i) );
                            if ( xChild.is() )
                            {
                                uno::Reference< accessibility::XAccessibleContext > xChildContext = xChild->getAccessibleContext();
                                if ( xChildContext == static_cast<accessibility::XAccessibleContext*>(this) )
                                {
                                    nIndex = i;
                                    break;
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    return nIndex;
}

sal_Int16 VCLXAccessibleComponent::getAccessibleRole(  )
{
    OExternalLockGuard aGuard( this );

    sal_Int16 nRole = 0;

    if ( GetWindow() )
        nRole = GetWindow()->GetAccessibleRole();

    return nRole;
}

OUString VCLXAccessibleComponent::getAccessibleDescription(  )
{
    OExternalLockGuard aGuard( this );

    OUString aDescription;

    if ( GetWindow() )
        aDescription = GetWindow()->GetAccessibleDescription();

    return aDescription;
}

OUString VCLXAccessibleComponent::getAccessibleName(  )
{
    OExternalLockGuard aGuard( this );

    OUString aName;
    if ( GetWindow() )
    {
        aName = GetWindow()->GetAccessibleName();
#if OSL_DEBUG_LEVEL > 0
        aName += " (Type = ";
        aName += OUString::number(static_cast<sal_Int32>(GetWindow()->GetType()));
        aName += ")";
#endif
    }
    return aName;
}

uno::Reference< accessibility::XAccessibleRelationSet > VCLXAccessibleComponent::getAccessibleRelationSet(  )
{
    OExternalLockGuard aGuard( this );

    utl::AccessibleRelationSetHelper* pRelationSetHelper = new utl::AccessibleRelationSetHelper;
    uno::Reference< accessibility::XAccessibleRelationSet > xSet = pRelationSetHelper;
    FillAccessibleRelationSet( *pRelationSetHelper );
    return xSet;
}

uno::Reference< accessibility::XAccessibleStateSet > VCLXAccessibleComponent::getAccessibleStateSet(  )
{
    OExternalLockGuard aGuard( this );

    utl::AccessibleStateSetHelper* pStateSetHelper = new utl::AccessibleStateSetHelper;
    uno::Reference< accessibility::XAccessibleStateSet > xSet = pStateSetHelper;
    FillAccessibleStateSet( *pStateSetHelper );
    return xSet;
}

lang::Locale VCLXAccessibleComponent::getLocale()
{
    OExternalLockGuard aGuard( this );

    return Application::GetSettings().GetLanguageTag().getLocale();
}

uno::Reference< accessibility::XAccessible > VCLXAccessibleComponent::getAccessibleAtPoint( const awt::Point& rPoint )
{
    OExternalLockGuard aGuard( this );

    uno::Reference< accessibility::XAccessible > xChild;
    for ( sal_uInt32 i = 0, nCount = getAccessibleChildCount(); i < nCount; ++i )
    {
        uno::Reference< accessibility::XAccessible > xAcc = getAccessibleChild( i );
        if ( xAcc.is() )
        {
            uno::Reference< accessibility::XAccessibleComponent > xComp( xAcc->getAccessibleContext(), uno::UNO_QUERY );
            if ( xComp.is() )
            {
                Rectangle aRect = VCLRectangle( xComp->getBounds() );
                Point aPos = VCLPoint( rPoint );
                if ( aRect.IsInside( aPos ) )
                {
                    xChild = xAcc;
                    break;
                }
            }
        }
    }

    return xChild;
}

// accessibility::XAccessibleComponent
awt::Rectangle VCLXAccessibleComponent::implGetBounds()
{
    awt::Rectangle aBounds ( 0, 0, 0, 0 );

    VclPtr<vcl::Window> pWindow = GetWindow();
    if ( pWindow )
    {
        Rectangle aRect = pWindow->GetWindowExtentsRelative( nullptr );
        aBounds = AWTRectangle( aRect );
        vcl::Window* pParent = pWindow->GetAccessibleParentWindow();
        if ( pParent )
        {
            Rectangle aParentRect = pParent->GetWindowExtentsRelative( nullptr );
            awt::Point aParentScreenLoc = AWTPoint( aParentRect.TopLeft() );
            aBounds.X -= aParentScreenLoc.X;
            aBounds.Y -= aParentScreenLoc.Y;
        }
    }

    uno::Reference< accessibility::XAccessible > xParent( implGetForeignControlledParent() );
    if ( xParent.is() )
    {   // hmm, we can't rely on our VCL coordinates, as in the Accessibility Hierarchy, somebody gave
        // us a parent which is different from our VCL parent
        // (actually, we did not check if it's really different ...)

        // the screen location of the foreign parent
        uno::Reference< accessibility::XAccessibleComponent > xParentComponent( xParent->getAccessibleContext(), uno::UNO_QUERY );
        DBG_ASSERT( xParentComponent.is(), "VCLXAccessibleComponent::implGetBounds: invalid (foreign) parent component!" );

        awt::Point aScreenLocForeign( 0, 0 );
        if ( xParentComponent.is() )
            aScreenLocForeign = xParentComponent->getLocationOnScreen();

        // the screen location of the VCL parent
        xParent = getVclParent();
        if ( xParent.is() )
            xParentComponent.set(xParent->getAccessibleContext(), css::uno::UNO_QUERY);

        awt::Point aScreenLocVCL( 0, 0 );
        if ( xParentComponent.is() )
            aScreenLocVCL = xParentComponent->getLocationOnScreen();

        // the difference between them
        awt::Size aOffset( aScreenLocVCL.X - aScreenLocForeign.X, aScreenLocVCL.Y - aScreenLocForeign.Y );
        // move the bounds
        aBounds.X += aOffset.Width;
        aBounds.Y += aOffset.Height;
    }

    return aBounds;
}

awt::Point VCLXAccessibleComponent::getLocationOnScreen(  )
{
    OExternalLockGuard aGuard( this );

    awt::Point aPos;
    if ( GetWindow() )
    {
        Rectangle aRect = GetWindow()->GetWindowExtentsRelative( nullptr );
        aPos.X = aRect.Left();
        aPos.Y = aRect.Top();
    }

    return aPos;
}

void VCLXAccessibleComponent::grabFocus(  )
{
    OExternalLockGuard aGuard( this );

    uno::Reference< accessibility::XAccessibleStateSet > xStates = getAccessibleStateSet();
    if ( m_xVCLXWindow.is() && xStates.is() && xStates->contains( accessibility::AccessibleStateType::FOCUSABLE ) )
        m_xVCLXWindow->setFocus();
}

sal_Int32 SAL_CALL VCLXAccessibleComponent::getForeground(  )
{
    OExternalLockGuard aGuard( this );

    sal_Int32 nColor = 0;
    VclPtr<vcl::Window> pWindow = GetWindow();
    if ( pWindow )
    {
        if ( pWindow->IsControlForeground() )
            nColor = pWindow->GetControlForeground().GetColor();
        else
        {
            vcl::Font aFont;
            if ( pWindow->IsControlFont() )
                aFont = pWindow->GetControlFont();
            else
                aFont = pWindow->GetFont();
            nColor = aFont.GetColor().GetColor();
            // COL_AUTO is not very meaningful for AT
            if ( nColor == (sal_Int32)COL_AUTO)
                nColor = pWindow->GetTextColor().GetColor();
        }
    }

    return nColor;
}

sal_Int32 SAL_CALL VCLXAccessibleComponent::getBackground(  )
{
    OExternalLockGuard aGuard( this );

    sal_Int32 nColor = 0;
    VclPtr<vcl::Window> pWindow = GetWindow();
    if ( pWindow )
    {
        if ( pWindow->IsControlBackground() )
            nColor = pWindow->GetControlBackground().GetColor();
        else
            nColor = pWindow->GetBackground().GetColor().GetColor();
    }

    return nColor;
}

// XAccessibleExtendedComponent

uno::Reference< awt::XFont > SAL_CALL VCLXAccessibleComponent::getFont(  )
{
    OExternalLockGuard aGuard( this );

    uno::Reference< awt::XFont > xFont;
    VclPtr<vcl::Window> pWindow = GetWindow();
    if ( pWindow )
    {
        uno::Reference< awt::XDevice > xDev( pWindow->GetComponentInterface(), uno::UNO_QUERY );
        if ( xDev.is() )
        {
            vcl::Font aFont;
            if ( pWindow->IsControlFont() )
                aFont = pWindow->GetControlFont();
            else
                aFont = pWindow->GetFont();
            VCLXFont* pVCLXFont = new VCLXFont;
            pVCLXFont->Init( *xDev.get(), aFont );
            xFont = pVCLXFont;
        }
    }

    return xFont;
}

OUString SAL_CALL VCLXAccessibleComponent::getTitledBorderText(  )
{
    OExternalLockGuard aGuard( this );

    OUString sRet;
    if ( GetWindow() )
        sRet = GetWindow()->GetText();

    return sRet;
}

OUString SAL_CALL VCLXAccessibleComponent::getToolTipText(  )
{
    OExternalLockGuard aGuard( this );

    OUString sRet;
    if ( GetWindow() )
        sRet = GetWindow()->GetQuickHelpText();

    return sRet;
}

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