/* -*- 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/accessiblelistboxentry.hxx>

#include <accessibility/accessiblelistbox.hxx>

#include <vcl/toolkit/treelistbox.hxx>

#include <vcl/toolkit/viewdataentry.hxx>

#include <com/sun/star/awt/Rectangle.hpp>

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

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

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

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

#include <com/sun/star/datatransfer/clipboard/XClipboard.hpp>

#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>

#include <i18nlangtag/languagetag.hxx>

#include <vcl/svapp.hxx>

#include <vcl/settings.hxx>

#include <vcl/unohelp.hxx>

#include <vcl/unohelp2.hxx>

#include <unotools/accessiblerelationsethelper.hxx>

#include <cppuhelper/supportsservice.hxx>

#include <svdata.hxx>

#include <strings.hrc>

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

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

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

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

using namespace ::comphelper;

AccessibleListBoxEntry::AccessibleListBoxEntry( SvTreeListBox& _rListBox,

                                                SvTreeListEntry& rEntry,

                                                AccessibleListBox & rListBox)

    : AccessibleListBoxEntry_BASE()

    , m_pTreeListBox( &_rListBox )

    , m_pSvLBoxEntry(&rEntry)

    , m_wListBox(&rListBox)

{

    m_pTreeListBox->AddEventListener( LINK( this, AccessibleListBoxEntry, WindowEventListener ) );

    _rListBox.FillEntryPath( m_pSvLBoxEntry, m_aEntryPath );

}

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

{

    OSL_ENSURE( rEvent.GetWindow() , "AccessibleListBoxEntry::WindowEventListener: no event window!" );

    OSL_ENSURE( rEvent.GetWindow() == m_pTreeListBox, "AccessibleListBoxEntry::WindowEventListener: where did this come from?" );

    if ( m_pTreeListBox == nullptr )

        return;

    switch ( rEvent.GetId() )

    {

        case VclEventId::CheckboxToggle:

        {

            // assert this object is represented as a checkbox on a11y layer (LABEL role is used for

            // SvButtonState::Tristate, s. AccessibleListBoxEntry::getAccessibleRole)

            assert(getAccessibleRole() == AccessibleRole::CHECK_BOX

                   || getAccessibleRole() == AccessibleRole::LABEL);

            Any aOldValue;

            Any aNewValue;

            if (getAccessibleStateSet() & AccessibleStateType::CHECKED)

                aNewValue <<= AccessibleStateType::CHECKED;

            else

                aOldValue <<= AccessibleStateType::CHECKED;

            NotifyAccessibleEvent(AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue);

            break;

        }

        case  VclEventId::ObjectDying :

        {

            dispose();

            break;

        }

        default: break;

    }

}

tools::Rectangle AccessibleListBoxEntry::GetBoundingBox_Impl() const

{

    tools::Rectangle aRect;

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if ( pEntry )

    {

        aRect = m_pTreeListBox->GetBoundingRect( pEntry );

        SvTreeListEntry* pParent = m_pTreeListBox->GetParent( pEntry );

        if ( pParent )

        {

            // position relative to parent entry

            Point aTopLeft = aRect.TopLeft();

            aTopLeft -= m_pTreeListBox->GetBoundingRect( pParent ).TopLeft();

            aRect = tools::Rectangle( aTopLeft, aRect.GetSize() );

        }

    }

    return aRect;

}

bool AccessibleListBoxEntry::IsShowing_Impl() const

{

    rtl::Reference<comphelper::OAccessible> pParent = implGetParentAccessible();

    bool bShowing = false;

    if (pParent.is())

    {

        bShowing = GetBoundingBox_Impl().Overlaps(

            vcl::unohelper::ConvertToVCLRect(pParent->getBounds()));

    }

    return bShowing;

}

void AccessibleListBoxEntry::CheckActionIndex(sal_Int32 nIndex)

{

    if (nIndex < 0 || nIndex >= getAccessibleActionCount())

        throw css::lang::IndexOutOfBoundsException();

}

OUString AccessibleListBoxEntry::implGetText()

{

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if (pEntry)

        return SvTreeListBox::SearchEntryTextWithHeadTitle(pEntry);

    return OUString();

}

Locale AccessibleListBoxEntry::implGetLocale()

{

    return Application::GetSettings().GetUILanguageTag().getLocale();

}

void AccessibleListBoxEntry::implGetSelection( sal_Int32& nStartIndex, sal_Int32& nEndIndex )

{

    nStartIndex = 0;

    nEndIndex = 0;

}

css::awt::Rectangle AccessibleListBoxEntry::implGetBounds()

{

    return vcl::unohelper::ConvertToAWTRect(GetBoundingBox_Impl());

}

// XComponent

void SAL_CALL AccessibleListBoxEntry::disposing()

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    Reference< XAccessible > xKeepAlive( this );

    OAccessible::disposing();

    // clean up

    m_wListBox.clear();

    if ( m_pTreeListBox )

        m_pTreeListBox->RemoveEventListener( LINK( this, AccessibleListBoxEntry, WindowEventListener ) );

    m_pTreeListBox = nullptr;

}

uno::Any SAL_CALL AccessibleListBoxEntry::queryInterface(const uno::Type& rType)

{

    if (rType == cppu::UnoType<XAccessibleText>::get())

    {

        // don't support XAccessibleText interface if there's no text item

        // (e.g. for IconView items), as screen readers may give text a higher

        // priority than accessible name and just say something like "blank" otherwise

        SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath(m_aEntryPath);

        if (pEntry && !pEntry->GetFirstItem(SvLBoxItemType::String))

            return uno::Any();

    }

    return AccessibleListBoxEntry_BASE::queryInterface(rType);

}

// XServiceInfo

OUString SAL_CALL AccessibleListBoxEntry::getImplementationName()

{

    return u"com.sun.star.comp.svtools.AccessibleTreeListBoxEntry"_ustr;

}

Sequence< OUString > SAL_CALL AccessibleListBoxEntry::getSupportedServiceNames()

{

    return {u"com.sun.star.accessibility.AccessibleContext"_ustr};

}

sal_Bool SAL_CALL AccessibleListBoxEntry::supportsService( const OUString& _rServiceName )

{

    return cppu::supportsService(this, _rServiceName);

}

// XAccessibleContext

sal_Int64 SAL_CALL AccessibleListBoxEntry::getAccessibleChildCount(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    sal_Int32 nCount = 0;

    if ( pEntry )

        nCount = m_pTreeListBox->GetLevelChildCount( pEntry );

    return nCount;

}

Reference< XAccessible > SAL_CALL AccessibleListBoxEntry::getAccessibleChild( sal_Int64 i )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    SvTreeListEntry* pEntry = GetRealChild(i);

    if ( !pEntry )

        throw IndexOutOfBoundsException();

    rtl::Reference<AccessibleListBox> xListBox(m_wListBox);

    assert(xListBox.is());

    return xListBox->implGetAccessible(*pEntry);

}

rtl::Reference<comphelper::OAccessible> AccessibleListBoxEntry::implGetParentAccessible() const

{

    rtl::Reference<comphelper::OAccessible> pParent;

    assert( m_aEntryPath.size() ); // invalid path

    if ( m_aEntryPath.size() == 1 )

    {   // we're a top level entry

        // -> our parent is the tree listbox itself

        if ( m_pTreeListBox )

            pParent = m_pTreeListBox->GetAccessible();

    }

    else

    {   // we have an entry as parent -> get its accessible

        // shorten our access path by one

        std::deque< sal_Int32 > aParentPath( m_aEntryPath );

        aParentPath.pop_back();

        // get the entry for this shortened access path

        SvTreeListEntry* pParentEntry = m_pTreeListBox->GetEntryFromPath( aParentPath );

        assert(pParentEntry && "AccessibleListBoxEntry::implGetParentAccessible: could not obtain a parent entry!");

        if ( pParentEntry )

        {

            rtl::Reference<AccessibleListBox> xListBox(m_wListBox);

            assert(xListBox.is());

            return xListBox->implGetAccessible(*pParentEntry);

            // the AccessibleListBoxEntry class will create its parent

            // when needed

        }

    }

    return pParent;

}

Reference< XAccessible > SAL_CALL AccessibleListBoxEntry::getAccessibleParent(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    return implGetParentAccessible( );

}

sal_Int64 SAL_CALL AccessibleListBoxEntry::getAccessibleIndexInParent(  )

{

    ::osl::MutexGuard aGuard( m_aMutex );

    OSL_ENSURE( !m_aEntryPath.empty(), "empty path" );

    return m_aEntryPath.empty() ? -1 : m_aEntryPath.back();

}

sal_Int32 AccessibleListBoxEntry::GetRoleType() const

{

    sal_Int32 nCase = 0;

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntry(0);

    if ( pEntry )

    {

        if( pEntry->HasChildrenOnDemand() || m_pTreeListBox->GetChildCount(pEntry) > 0  )

        {

            nCase = 1;

            return nCase;

        }

    }

    bool bHasButtons = (m_pTreeListBox->GetStyle() & WB_HASBUTTONS)!=0;

    if( !(m_pTreeListBox->GetTreeFlags() & SvTreeFlags::CHKBTN) )

    {

        if( bHasButtons )

            nCase = 1;

    }

    else

    {

        if( bHasButtons )

            nCase = 2;

        else

            nCase = 3;

    }

    return nCase;

}

sal_Int16 SAL_CALL AccessibleListBoxEntry::getAccessibleRole(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    SvTreeListBox* pBox = m_pTreeListBox;

    if(!pBox)

        return AccessibleRole::UNKNOWN;

    SvTreeFlags treeFlag = pBox->GetTreeFlags();

    if(treeFlag & SvTreeFlags::CHKBTN )

    {

        SvTreeListEntry* pEntry = pBox->GetEntryFromPath( m_aEntryPath );

        SvButtonState eState = pBox->GetCheckButtonState( pEntry );

        switch( eState )

        {

        case SvButtonState::Checked:

        case SvButtonState::Unchecked:

            return AccessibleRole::CHECK_BOX;

        case SvButtonState::Tristate:

        default:

            return AccessibleRole::LABEL;

        }

    }

    if (GetRoleType() == 0)

        return AccessibleRole::LIST_ITEM;

    else

        //o is: return AccessibleRole::LABEL;

        return AccessibleRole::TREE_ITEM;

}

OUString SAL_CALL AccessibleListBoxEntry::getAccessibleDescription(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    return OUString();

}

OUString SAL_CALL AccessibleListBoxEntry::getAccessibleName(  )

{

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if (SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath(m_aEntryPath))

    {

        OUString sName = pEntry->GetAccessibleName();

        if (!sName.isEmpty())

            return sName;

    }

    return implGetText();

}

Reference< XAccessibleRelationSet > SAL_CALL AccessibleListBoxEntry::getAccessibleRelationSet(  )

{

    rtl::Reference<comphelper::OAccessible> pParent;

    if ( m_aEntryPath.size() > 1 ) // not a root entry

        pParent = implGetParentAccessible();

    if (!pParent.is())

        return nullptr;

    rtl::Reference<utl::AccessibleRelationSetHelper> pRelationSetHelper = new utl::AccessibleRelationSetHelper;

    Sequence<Reference<XAccessible>> aSequence{ pParent };

    pRelationSetHelper->AddRelation(

        AccessibleRelation( AccessibleRelationType_NODE_CHILD_OF, aSequence ) );

    return pRelationSetHelper;

}

sal_Int64 SAL_CALL AccessibleListBoxEntry::getAccessibleStateSet(  )

{

    ::osl::MutexGuard aGuard( m_aMutex );

    sal_Int64 nStateSet = 0;

    if (isAlive())

    {

        switch(getAccessibleRole())

        {

            case AccessibleRole::LABEL:

                nStateSet |= AccessibleStateType::TRANSIENT;

                nStateSet |= AccessibleStateType::SELECTABLE;

                nStateSet |= AccessibleStateType::ENABLED;

                if (m_pTreeListBox->IsInplaceEditingEnabled())

                    nStateSet |= AccessibleStateType::EDITABLE;

                if (IsShowing_Impl())

                    nStateSet |= AccessibleStateType::SHOWING;

                break;

            case AccessibleRole::CHECK_BOX:

                nStateSet |= AccessibleStateType::TRANSIENT;

                nStateSet |= AccessibleStateType::SELECTABLE;

                nStateSet |= AccessibleStateType::ENABLED;

                if (IsShowing_Impl())

                    nStateSet |= AccessibleStateType::SHOWING;

                break;

        }

        if (SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath(m_aEntryPath))

        {

            if (pEntry->HasChildrenOnDemand() || pEntry->HasChildren())

            {

                nStateSet |= AccessibleStateType::EXPANDABLE;

                if (m_pTreeListBox->IsExpanded(pEntry))

                    nStateSet |= AccessibleStateType::EXPANDED;

            }

            if (m_pTreeListBox->GetTreeFlags() & SvTreeFlags::CHKBTN)

                nStateSet |= AccessibleStateType::CHECKABLE;

            if (m_pTreeListBox->GetCheckButtonState(pEntry) == SvButtonState::Checked)

                nStateSet |= AccessibleStateType::CHECKED;

            if (m_pTreeListBox->IsEntryVisible(pEntry))

                nStateSet |= AccessibleStateType::VISIBLE;

            if (m_pTreeListBox->IsSelected(pEntry))

                nStateSet |= AccessibleStateType::SELECTED;

            if (m_pTreeListBox->IsEnabled())

            {

                nStateSet |= AccessibleStateType::ENABLED;

                nStateSet |= AccessibleStateType::FOCUSABLE;

                nStateSet |= AccessibleStateType::SELECTABLE;

                SvViewDataEntry* pViewDataNewCur = m_pTreeListBox->GetViewDataEntry(pEntry);

                if (pViewDataNewCur && pViewDataNewCur->HasFocus())

                    nStateSet |= AccessibleStateType::FOCUSED;

            }

        }

    }

    else

        nStateSet |= AccessibleStateType::DEFUNC;

    return nStateSet;

}

Locale SAL_CALL AccessibleListBoxEntry::getLocale(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    return implGetLocale();

}

// XAccessibleComponent

Reference< XAccessible > SAL_CALL AccessibleListBoxEntry::getAccessibleAtPoint( const awt::Point& _aPoint )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    SvTreeListEntry* pEntry

        = m_pTreeListBox->GetEntry(vcl::unohelper::ConvertToVCLPoint(_aPoint));

    if ( !pEntry )

        throw RuntimeException(u"AccessibleListBoxEntry::getAccessibleAtPoint - pEntry cannot be empty!"_ustr);

    rtl::Reference<AccessibleListBox> xListBox(m_wListBox);

    assert(xListBox.is());

    rtl::Reference<AccessibleListBoxEntry> pAccEntry = xListBox->implGetAccessible(*pEntry);

    tools::Rectangle aRect = pAccEntry->GetBoundingBox_Impl();

    if (aRect.Contains(vcl::unohelper::ConvertToVCLPoint(_aPoint))

        && pAccEntry->implGetParentAccessible().get() == this)

        return pAccEntry;

    return {};

}

void SAL_CALL AccessibleListBoxEntry::grabFocus(  )

{

    // do nothing, because no focus for each item

}

sal_Int32 AccessibleListBoxEntry::getForeground(    )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    sal_Int32 nColor = 0;

    Reference< XAccessible > xParent = getAccessibleParent();

    if ( xParent.is() )

    {

        Reference< XAccessibleComponent > xParentComp( xParent->getAccessibleContext(), UNO_QUERY );

        if ( xParentComp.is() )

            nColor = xParentComp->getForeground();

    }

    return nColor;

}

sal_Int32 AccessibleListBoxEntry::getBackground(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    sal_Int32 nColor = 0;

    Reference< XAccessible > xParent = getAccessibleParent();

    if ( xParent.is() )

    {

        Reference< XAccessibleComponent > xParentComp( xParent->getAccessibleContext(), UNO_QUERY );

        if ( xParentComp.is() )

            nColor = xParentComp->getBackground();

    }

    return nColor;

}

// XAccessibleText

awt::Rectangle SAL_CALL AccessibleListBoxEntry::getCharacterBounds( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if ( !implIsValidIndex( nIndex, implGetText().getLength() ) )

        throw IndexOutOfBoundsException();

    awt::Rectangle aBounds( 0, 0, 0, 0 );

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if ( pEntry )

    {

        vcl::ControlLayoutData aLayoutData;

        tools::Rectangle aItemRect = GetBoundingBox_Impl();

        m_pTreeListBox->RecordLayoutData( &aLayoutData, aItemRect );

        tools::Rectangle aCharRect = aLayoutData.GetCharacterBounds( nIndex );

        aCharRect.Move( -aItemRect.Left(), -aItemRect.Top() );

        aBounds = vcl::unohelper::ConvertToAWTRect(aCharRect);

    }

    return aBounds;

}

sal_Int32 SAL_CALL AccessibleListBoxEntry::getIndexAtPoint( const awt::Point& aPoint )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if(aPoint.X==0 && aPoint.Y==0) return 0;

    sal_Int32 nIndex = -1;

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if ( pEntry )

    {

        vcl::ControlLayoutData aLayoutData;

        tools::Rectangle aItemRect = GetBoundingBox_Impl();

        m_pTreeListBox->RecordLayoutData( &aLayoutData, aItemRect );

        Point aPnt(vcl::unohelper::ConvertToVCLPoint(aPoint));

        aPnt += aItemRect.TopLeft();

        nIndex = aLayoutData.GetIndexForPoint( aPnt );

    }

    return nIndex;

}

sal_Bool SAL_CALL AccessibleListBoxEntry::copyText( sal_Int32 nStartIndex, sal_Int32 nEndIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    OUString sText = implGetText();

    if  ( ( 0 > nStartIndex ) || ( sText.getLength() <= nStartIndex )

        || ( 0 > nEndIndex ) || ( sText.getLength() <= nEndIndex ) )

        throw IndexOutOfBoundsException();

    if (!m_pTreeListBox)

        return false;

    sal_Int32 nLen = nEndIndex - nStartIndex + 1;

    css::uno::Reference<css::datatransfer::clipboard::XClipboard> xClipBoard = m_pTreeListBox->GetClipboard();

    vcl::unohelper::TextDataObject::CopyStringTo(sText.copy(nStartIndex, nLen), xClipBoard);

    return true;

}

sal_Bool SAL_CALL AccessibleListBoxEntry::scrollSubstringTo( sal_Int32, sal_Int32, AccessibleScrollType )

{

    return false;

}

// XAccessibleAction

sal_Int32 SAL_CALL AccessibleListBoxEntry::getAccessibleActionCount(  )

{

    ::osl::MutexGuard aGuard( m_aMutex );

    // three actions supported

    SvTreeFlags treeFlag = m_pTreeListBox->GetTreeFlags();

    bool bHasButtons = (m_pTreeListBox->GetStyle() & WB_HASBUTTONS)!=0;

    if( (treeFlag & SvTreeFlags::CHKBTN) && !bHasButtons)

    {

        sal_Int16 role = getAccessibleRole();

        if ( role == AccessibleRole::CHECK_BOX )

            return 2;

        else if ( role == AccessibleRole::LABEL )

            return 0;

    }

    else

        return 1;

    return 0;

}

sal_Bool SAL_CALL AccessibleListBoxEntry::doAccessibleAction( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    bool bRet = false;

    CheckActionIndex(nIndex);

    ensureAlive();

    SvTreeFlags treeFlag = m_pTreeListBox->GetTreeFlags();

    if( nIndex == 0 && (treeFlag & SvTreeFlags::CHKBTN) )

    {

        if(getAccessibleRole() == AccessibleRole::CHECK_BOX)

        {

            SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

            SvButtonState state = m_pTreeListBox->GetCheckButtonState( pEntry );

            if ( state == SvButtonState::Checked )

                m_pTreeListBox->SetCheckButtonState(pEntry, SvButtonState::Unchecked);

            else if (state == SvButtonState::Unchecked)

                m_pTreeListBox->SetCheckButtonState(pEntry, SvButtonState::Checked);

        }

    }

    else if( (nIndex == 1 && (treeFlag & SvTreeFlags::CHKBTN) ) || (nIndex == 0) )

    {

        SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

        if ( pEntry )

        {

            if ( m_pTreeListBox->IsExpanded( pEntry ) )

                m_pTreeListBox->Collapse( pEntry );

            else

                m_pTreeListBox->Expand( pEntry );

            bRet = true;

        }

    }

    return bRet;

}

OUString SAL_CALL AccessibleListBoxEntry::getAccessibleActionDescription( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    CheckActionIndex(nIndex);

    ensureAlive();

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    SvButtonState state = m_pTreeListBox->GetCheckButtonState( pEntry );

    SvTreeFlags treeFlag = m_pTreeListBox->GetTreeFlags();

    if(nIndex == 0 && (treeFlag & SvTreeFlags::CHKBTN))

    {

        if(getAccessibleRole() == AccessibleRole::CHECK_BOX)

        {

            if ( state == SvButtonState::Checked )

                return u"UnCheck"_ustr;

            else if (state == SvButtonState::Unchecked)

                return u"Check"_ustr;

        }

        else

        {

            //Sometimes, a List or Tree may have both checkbox and label at the same time

            return OUString();

        }

    }

    else if( (nIndex == 1 && (treeFlag & SvTreeFlags::CHKBTN)) || nIndex == 0 )

    {

        if( pEntry && (pEntry->HasChildren() || pEntry->HasChildrenOnDemand()) )

            return m_pTreeListBox->IsExpanded( pEntry ) ?

            VclResId(STR_SVT_ACC_ACTION_COLLAPSE) :

            VclResId(STR_SVT_ACC_ACTION_EXPAND);

        return OUString();

    }

    throw IndexOutOfBoundsException();

}

Reference< XAccessibleKeyBinding > AccessibleListBoxEntry::getAccessibleActionKeyBinding( sal_Int32 nIndex )

{

    Reference< XAccessibleKeyBinding > xRet;

    CheckActionIndex(nIndex);

    // ... which key?

    return xRet;

}

// XAccessibleSelection

void SAL_CALL AccessibleListBoxEntry::selectAccessibleChild( sal_Int64 nChildIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if (nChildIndex < 0 || nChildIndex >= getAccessibleChildCount())

        throw IndexOutOfBoundsException();

    SvTreeListEntry* pEntry = GetRealChild(nChildIndex);

    if ( !pEntry )

        throw IndexOutOfBoundsException();

    m_pTreeListBox->Select( pEntry );

}

sal_Bool SAL_CALL AccessibleListBoxEntry::isAccessibleChildSelected( sal_Int64 nChildIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if (nChildIndex < 0 || nChildIndex >= getAccessibleChildCount())

        throw IndexOutOfBoundsException();

    SvTreeListEntry* pParent = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntry( pParent, nChildIndex );

    if ( !pEntry )

        throw IndexOutOfBoundsException();

    return m_pTreeListBox->IsSelected( pEntry );

}

void SAL_CALL AccessibleListBoxEntry::clearAccessibleSelection(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    SvTreeListEntry* pParent = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if ( !pParent )

        throw RuntimeException(u"AccessibleListBoxEntry::clearAccessibleSelection - pParent cannot be empty!"_ustr);

    sal_Int32 nCount = m_pTreeListBox->GetLevelChildCount( pParent );

    for ( sal_Int32 i = 0; i < nCount; ++i )

    {

        SvTreeListEntry* pEntry = m_pTreeListBox->GetEntry( pParent, i );

        if ( m_pTreeListBox->IsSelected( pEntry ) )

            m_pTreeListBox->Select( pEntry, false );

    }

}

void SAL_CALL AccessibleListBoxEntry::selectAllAccessibleChildren(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    SvTreeListEntry* pParent = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if ( !pParent )

        throw RuntimeException(u"AccessibleListBoxEntry::selectAllAccessibleChildren - pParent cannot be empty!"_ustr);

    sal_Int32 nCount = m_pTreeListBox->GetLevelChildCount( pParent );

    for ( sal_Int32 i = 0; i < nCount; ++i )

    {

        SvTreeListEntry* pEntry = m_pTreeListBox->GetEntry( pParent, i );

        if ( !m_pTreeListBox->IsSelected( pEntry ) )

            m_pTreeListBox->Select( pEntry );

    }

}

sal_Int64 SAL_CALL AccessibleListBoxEntry::getSelectedAccessibleChildCount(  )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    sal_Int64 nSelCount = 0;

    SvTreeListEntry* pParent = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if ( !pParent )

        throw RuntimeException(u"AccessibleListBoxEntry::getSelectedAccessibleChildCount - pParent cannot be empty!"_ustr);

    sal_Int32 nCount = m_pTreeListBox->GetLevelChildCount( pParent );

    for (sal_Int32 i = 0; i < nCount; ++i )

    {

        SvTreeListEntry* pEntry = m_pTreeListBox->GetEntry( pParent, i );

        if ( m_pTreeListBox->IsSelected( pEntry ) )

            ++nSelCount;

    }

    return nSelCount;

}

Reference< XAccessible > SAL_CALL AccessibleListBoxEntry::getSelectedAccessibleChild( sal_Int64 nSelectedChildIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if ( nSelectedChildIndex < 0 || nSelectedChildIndex >= getSelectedAccessibleChildCount() )

        throw IndexOutOfBoundsException();

    Reference< XAccessible > xChild;

    sal_Int64 nSelCount = 0;

    SvTreeListEntry* pParent = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    if ( !pParent )

        throw RuntimeException(u"AccessibleListBoxEntry::getSelectedAccessibleChild - pParent cannot be empty!"_ustr);

    sal_Int32 nCount = m_pTreeListBox->GetLevelChildCount( pParent );

    for (sal_Int32 i = 0; i < nCount; ++i )

    {

        SvTreeListEntry* pEntry = m_pTreeListBox->GetEntry( pParent, i );

        if ( m_pTreeListBox->IsSelected( pEntry ) )

            ++nSelCount;

        if ( nSelCount == ( nSelectedChildIndex + 1 ) )

        {

            rtl::Reference<AccessibleListBox> xListBox(m_wListBox);

            assert(xListBox.is());

            xChild = xListBox->implGetAccessible(*pEntry).get();

            break;

        }

    }

    return xChild;

}

void SAL_CALL AccessibleListBoxEntry::deselectAccessibleChild( sal_Int64 nSelectedChildIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if (nSelectedChildIndex < 0 || nSelectedChildIndex >= getAccessibleChildCount())

        throw IndexOutOfBoundsException();

    SvTreeListEntry* pParent = m_pTreeListBox->GetEntryFromPath( m_aEntryPath );

    SvTreeListEntry* pEntry = m_pTreeListBox->GetEntry( pParent, nSelectedChildIndex );

    if ( !pEntry )

        throw IndexOutOfBoundsException();

    m_pTreeListBox->Select( pEntry, false );

}

sal_Int32 SAL_CALL AccessibleListBoxEntry::getCaretPosition(  )

{

    return -1;

}

sal_Bool SAL_CALL AccessibleListBoxEntry::setCaretPosition ( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    if ( !implIsValidRange( nIndex, nIndex, implGetText().getLength() ) )

        throw IndexOutOfBoundsException();

    return false;

}

sal_Unicode SAL_CALL AccessibleListBoxEntry::getCharacter( sal_Int32 nIndex )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    return OCommonAccessibleText::implGetCharacter( implGetText(), nIndex );

}

css::uno::Sequence< css::beans::PropertyValue > SAL_CALL AccessibleListBoxEntry::getCharacterAttributes( sal_Int32 nIndex, const css::uno::Sequence< OUString >& )

{

    SolarMutexGuard aSolarGuard;

    ::osl::MutexGuard aGuard( m_aMutex );

    ensureAlive();

    OUString sText( implGetText() );