Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1739 insertions, 0 deletions

diff --git a/sw/source/core/access/acctable.cxx b/sw/source/core/access/acctable.cxx
new file mode 100644
index 000000000..0fd373754
--- /dev/null
+++ b/sw/source/core/access/acctable.cxx
@@ -0,0 +1,1739 @@
+/* -*- 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 <sal/log.hxx>
+
+#include <algorithm>
+#include <vector>
+#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/AccessibleTableModelChange.hpp>
+#include <com/sun/star/accessibility/AccessibleTableModelChangeType.hpp>
+#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
+#include <o3tl/safeint.hxx>
+#include <unotools/accessiblestatesethelper.hxx>
+#include <vcl/svapp.hxx>
+#include <frmfmt.hxx>
+#include <tabfrm.hxx>
+#include <cellfrm.hxx>
+#include <swtable.hxx>
+#include <crsrsh.hxx>
+#include <viscrs.hxx>
+#include "accfrmobjslist.hxx"
+#include <accmap.hxx>
+#include <strings.hrc>
+#include "acctable.hxx"
+
+#include <com/sun/star/accessibility/XAccessibleText.hpp>
+
+#include <editeng/brushitem.hxx>
+#include <swatrset.hxx>
+#include <frmatr.hxx>
+
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/typeprovider.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::accessibility;
+using namespace ::sw::access;
+
+typedef o3tl::sorted_vector< sal_Int32 > Int32Set_Impl;
+
+const unsigned int SELECTION_WITH_NUM = 10;
+
+namespace {
+
+class SwAccTableSelHandler_Impl
+{
+public:
+    virtual void Unselect( sal_Int32 nRowOrCol, sal_Int32 nExt ) = 0;
+
+protected:
+    ~SwAccTableSelHandler_Impl() {}
+};
+
+}
+
+class SwAccessibleTableData_Impl
+{
+    SwAccessibleMap& mrAccMap;
+    Int32Set_Impl   maRows;
+    Int32Set_Impl   maColumns;
+    Point   maTabFramePos;
+    const SwTabFrame *mpTabFrame;
+    bool mbIsInPagePreview;
+    bool mbOnlyTableColumnHeader;
+
+    void CollectData( const SwFrame *pFrame );
+
+    bool FindCell( const Point& rPos, const SwFrame *pFrame ,
+                           bool bExact, const SwFrame *& rFrame ) const;
+
+    void GetSelection( const Point& rTabPos, const SwRect& rArea,
+                       const SwSelBoxes& rSelBoxes, const SwFrame *pFrame,
+                       SwAccTableSelHandler_Impl& rSelHdl,
+                       bool bColumns ) const;
+
+    // #i77106#
+    bool IncludeRow( const SwFrame& rFrame ) const
+    {
+        return !mbOnlyTableColumnHeader ||
+               mpTabFrame->IsInHeadline( rFrame );
+    }
+public:
+    // #i77106# - add third optional parameter <bOnlyTableColumnHeader>, default value <false>
+    SwAccessibleTableData_Impl( SwAccessibleMap& rAccMap,
+                                const SwTabFrame *pTabFrame,
+                                bool bIsInPagePreview,
+                                bool bOnlyTableColumnHeader = false );
+
+    const Int32Set_Impl& GetRows() const { return maRows; }
+    const Int32Set_Impl& GetColumns() const { return maColumns; }
+
+    inline Int32Set_Impl::const_iterator GetRowIter( sal_Int32 nRow ) const;
+    inline Int32Set_Impl::const_iterator GetColumnIter( sal_Int32 nCol ) const;
+
+    /// @throws lang::IndexOutOfBoundsException
+    /// @throws  uno::RuntimeException
+    const SwFrame *GetCell( sal_Int32 nRow, sal_Int32 nColumn, SwAccessibleTable *pThis ) const;
+    const SwFrame *GetCellAtPos( sal_Int32 nLeft, sal_Int32 nTop ) const;
+    inline sal_Int32 GetRowCount() const;
+    inline sal_Int32 GetColumnCount() const;
+    bool CompareExtents( const SwAccessibleTableData_Impl& r ) const;
+
+    void GetSelection( sal_Int32 nStart, sal_Int32 nEnd,
+                       const SwSelBoxes& rSelBoxes,
+                          SwAccTableSelHandler_Impl& rSelHdl,
+                       bool bColumns ) const;
+
+    /// @throws lang::IndexOutOfBoundsException
+    void CheckRowAndCol( sal_Int32 nRow, sal_Int32 nCol,
+                         SwAccessibleTable *pThis ) const;
+
+    const Point& GetTablePos() const { return maTabFramePos; }
+    void SetTablePos( const Point& rPos ) { maTabFramePos = rPos; }
+};
+
+void SwAccessibleTableData_Impl::CollectData( const SwFrame *pFrame )
+{
+    const SwAccessibleChildSList aList( *pFrame, mrAccMap );
+    SwAccessibleChildSList::const_iterator aIter( aList.begin() );
+    SwAccessibleChildSList::const_iterator aEndIter( aList.end() );
+    while( aIter != aEndIter )
+    {
+        const SwAccessibleChild& rLower = *aIter;
+        const SwFrame *pLower = rLower.GetSwFrame();
+        if( pLower )
+        {
+            if( pLower->IsRowFrame() )
+            {
+                // #i77106#
+                if ( IncludeRow( *pLower ) )
+                {
+                    maRows.insert( pLower->getFrameArea().Top() - maTabFramePos.getY() );
+                    CollectData( pLower );
+                }
+            }
+            else if( pLower->IsCellFrame() &&
+                     rLower.IsAccessible( mbIsInPagePreview ) )
+            {
+                maColumns.insert( pLower->getFrameArea().Left() - maTabFramePos.getX() );
+            }
+            else
+            {
+                CollectData( pLower );
+            }
+        }
+        ++aIter;
+    }
+}
+
+bool SwAccessibleTableData_Impl::FindCell(
+        const Point& rPos, const SwFrame *pFrame, bool bExact,
+        const SwFrame *& rRet ) const
+{
+    bool bFound = false;
+
+    const SwAccessibleChildSList aList( *pFrame, mrAccMap );
+    SwAccessibleChildSList::const_iterator aIter( aList.begin() );
+    SwAccessibleChildSList::const_iterator aEndIter( aList.end() );
+    while( !bFound && aIter != aEndIter )
+    {
+        const SwAccessibleChild& rLower = *aIter;
+        const SwFrame *pLower = rLower.GetSwFrame();
+        OSL_ENSURE( pLower, "child should be a frame" );
+        if( pLower )
+        {
+            if( rLower.IsAccessible( mbIsInPagePreview ) )
+            {
+                OSL_ENSURE( pLower->IsCellFrame(), "lower is not a cell frame" );
+                const SwRect& rFrame = pLower->getFrameArea();
+                if( rFrame.Right() >= rPos.X() && rFrame.Bottom() >= rPos.Y() )
+                {
+                    // We have found the cell
+                    OSL_ENSURE( rFrame.Left() <= rPos.X() && rFrame.Top() <= rPos.Y(),
+                            "find frame moved to far!" );
+                    bFound = true;
+                    if( !bExact ||
+                        (rFrame.Top() == rPos.Y() && rFrame.Left() == rPos.Y() ) )
+                    {
+                        rRet = pLower;
+                    }
+                }
+            }
+            else
+            {
+                // #i77106#
+                if ( !pLower->IsRowFrame() ||
+                     IncludeRow( *pLower ) )
+                {
+                    bFound = FindCell( rPos, pLower, bExact, rRet );
+                }
+            }
+        }
+        ++aIter;
+    }
+
+    return bFound;
+}
+
+void SwAccessibleTableData_Impl::GetSelection(
+            const Point& rTabPos,
+            const SwRect& rArea,
+            const SwSelBoxes& rSelBoxes,
+            const SwFrame *pFrame,
+            SwAccTableSelHandler_Impl& rSelHdl,
+            bool bColumns ) const
+{
+    const SwAccessibleChildSList aList( *pFrame, mrAccMap );
+    SwAccessibleChildSList::const_iterator aIter( aList.begin() );
+    SwAccessibleChildSList::const_iterator aEndIter( aList.end() );
+    while( aIter != aEndIter )
+    {
+        const SwAccessibleChild& rLower = *aIter;
+        const SwFrame *pLower = rLower.GetSwFrame();
+        OSL_ENSURE( pLower, "child should be a frame" );
+        const SwRect& rBox = rLower.GetBox( mrAccMap );
+        if( pLower && rBox.Overlaps( rArea ) )
+        {
+            if( rLower.IsAccessible( mbIsInPagePreview ) )
+            {
+                OSL_ENSURE( pLower->IsCellFrame(), "lower is not a cell frame" );
+                const SwCellFrame *pCFrame =
+                        static_cast < const SwCellFrame * >( pLower );
+                SwTableBox *pBox =
+                    const_cast< SwTableBox *>( pCFrame->GetTabBox() );
+                if( rSelBoxes.find( pBox ) == rSelBoxes.end() )
+                {
+                    const Int32Set_Impl rRowsOrCols =
+                        bColumns ? maColumns : maRows;
+
+                    sal_Int32 nPos = bColumns ? (rBox.Left() - rTabPos.X())
+                                              : (rBox.Top() - rTabPos.Y());
+                    Int32Set_Impl::const_iterator aSttRowOrCol(
+                        rRowsOrCols.lower_bound( nPos ) );
+                    sal_Int32 nRowOrCol =
+                        static_cast< sal_Int32 >( std::distance(
+                            rRowsOrCols.begin(), aSttRowOrCol ) );
+
+                    nPos = bColumns ? (rBox.Right() - rTabPos.X())
+                                    : (rBox.Bottom() - rTabPos.Y());
+                    Int32Set_Impl::const_iterator aEndRowOrCol(
+                        rRowsOrCols.upper_bound( nPos ) );
+                    sal_Int32 nExt =
+                        static_cast< sal_Int32 >( std::distance(
+                            aSttRowOrCol, aEndRowOrCol ) );
+
+                    rSelHdl.Unselect( nRowOrCol, nExt );
+                }
+            }
+            else
+            {
+                // #i77106#
+                if ( !pLower->IsRowFrame() ||
+                     IncludeRow( *pLower ) )
+                {
+                    GetSelection( rTabPos, rArea, rSelBoxes, pLower, rSelHdl,
+                                  bColumns );
+                }
+            }
+        }
+        ++aIter;
+    }
+}
+
+const SwFrame *SwAccessibleTableData_Impl::GetCell(
+        sal_Int32 nRow, sal_Int32 nColumn,
+        SwAccessibleTable *pThis ) const
+{
+    CheckRowAndCol( nRow, nColumn, pThis );
+
+    Int32Set_Impl::const_iterator aSttCol( GetColumnIter( nColumn ) );
+    Int32Set_Impl::const_iterator aSttRow( GetRowIter( nRow ) );
+    const SwFrame *pCellFrame = GetCellAtPos( *aSttCol, *aSttRow );
+
+    return pCellFrame;
+}
+
+void SwAccessibleTableData_Impl::GetSelection(
+                       sal_Int32 nStart, sal_Int32 nEnd,
+                       const SwSelBoxes& rSelBoxes,
+                          SwAccTableSelHandler_Impl& rSelHdl,
+                       bool bColumns ) const
+{
+    SwRect aArea( mpTabFrame->getFrameArea() );
+    Point aPos( aArea.Pos() );
+
+    const Int32Set_Impl& rRowsOrColumns = bColumns ? maColumns : maRows;
+    if( nStart > 0 )
+    {
+        Int32Set_Impl::const_iterator aStt( rRowsOrColumns.begin() );
+        std::advance( aStt,
+            static_cast< Int32Set_Impl::difference_type >( nStart ) );
+        if( bColumns )
+            aArea.Left( *aStt + aPos.getX() );
+        else
+            aArea.Top( *aStt + aPos.getY() );
+    }
+    if( nEnd < static_cast< sal_Int32 >( rRowsOrColumns.size() ) )
+    {
+        Int32Set_Impl::const_iterator aEnd( rRowsOrColumns.begin() );
+        std::advance( aEnd,
+            static_cast< Int32Set_Impl::difference_type >( nEnd ) );
+        if( bColumns )
+            aArea.Right( *aEnd + aPos.getX() - 1 );
+        else
+            aArea.Bottom( *aEnd + aPos.getY() - 1 );
+    }
+
+    GetSelection( aPos, aArea, rSelBoxes, mpTabFrame, rSelHdl, bColumns );
+}
+
+const SwFrame *SwAccessibleTableData_Impl::GetCellAtPos(
+        sal_Int32 nLeft, sal_Int32 nTop ) const
+{
+    Point aPos( mpTabFrame->getFrameArea().Pos() );
+    aPos.Move( nLeft, nTop );
+    const SwFrame *pRet = nullptr;
+    FindCell( aPos, mpTabFrame, false/*bExact*/, pRet );
+
+    return pRet;
+}
+
+inline sal_Int32 SwAccessibleTableData_Impl::GetRowCount() const
+{
+    sal_Int32 count =  static_cast< sal_Int32 >( maRows.size() ) ;
+    count = (count <=0)? 1:count;
+    return count;
+}
+
+inline sal_Int32 SwAccessibleTableData_Impl::GetColumnCount() const
+{
+    return static_cast< sal_Int32 >( maColumns.size() );
+}
+
+bool SwAccessibleTableData_Impl::CompareExtents(
+                                const SwAccessibleTableData_Impl& rCmp ) const
+{
+    return maRows == rCmp.maRows
+        && maColumns == rCmp.maColumns;
+}
+
+SwAccessibleTableData_Impl::SwAccessibleTableData_Impl( SwAccessibleMap& rAccMap,
+                                                        const SwTabFrame *pTabFrame,
+                                                        bool bIsInPagePreview,
+                                                        bool bOnlyTableColumnHeader )
+    : mrAccMap( rAccMap )
+    , maTabFramePos( pTabFrame->getFrameArea().Pos() )
+    , mpTabFrame( pTabFrame )
+    , mbIsInPagePreview( bIsInPagePreview )
+    , mbOnlyTableColumnHeader( bOnlyTableColumnHeader )
+{
+    CollectData( mpTabFrame );
+}
+
+inline Int32Set_Impl::const_iterator SwAccessibleTableData_Impl::GetRowIter(
+        sal_Int32 nRow ) const
+{
+    Int32Set_Impl::const_iterator aCol( GetRows().begin() );
+    if( nRow > 0 )
+    {
+        std::advance( aCol,
+                    static_cast< Int32Set_Impl::difference_type >( nRow ) );
+    }
+    return aCol;
+}
+
+inline Int32Set_Impl::const_iterator SwAccessibleTableData_Impl::GetColumnIter(
+        sal_Int32 nColumn ) const
+{
+    Int32Set_Impl::const_iterator aCol = GetColumns().begin();
+    if( nColumn > 0 )
+    {
+        std::advance( aCol,
+                    static_cast< Int32Set_Impl::difference_type >( nColumn ) );
+    }
+    return aCol;
+}
+
+void SwAccessibleTableData_Impl::CheckRowAndCol(
+        sal_Int32 nRow, sal_Int32 nCol, SwAccessibleTable *pThis ) const
+{
+    if( ( nRow < 0 || o3tl::make_unsigned(nRow) >= maRows.size() ) ||
+        ( nCol < 0 || o3tl::make_unsigned(nCol) >= maColumns.size() ) )
+    {
+        uno::Reference < XAccessibleTable > xThis( pThis );
+        lang::IndexOutOfBoundsException aExcept(
+               "row or column index out of range",
+               xThis );
+        throw aExcept;
+    }
+}
+
+namespace {
+
+class SwAccSingleTableSelHandler_Impl : public SwAccTableSelHandler_Impl
+{
+    bool m_bSelected;
+
+public:
+
+    inline SwAccSingleTableSelHandler_Impl();
+
+    virtual ~SwAccSingleTableSelHandler_Impl() {}
+
+    bool IsSelected() const { return m_bSelected; }
+
+    virtual void Unselect( sal_Int32, sal_Int32 ) override;
+};
+
+}
+
+inline SwAccSingleTableSelHandler_Impl::SwAccSingleTableSelHandler_Impl() :
+    m_bSelected( true )
+{
+}
+
+void SwAccSingleTableSelHandler_Impl::Unselect( sal_Int32, sal_Int32 )
+{
+    m_bSelected = false;
+}
+
+namespace {
+
+class SwAccAllTableSelHandler_Impl : public SwAccTableSelHandler_Impl
+
+{
+    std::vector< bool > m_aSelected;
+    sal_Int32 m_nCount;
+
+public:
+    explicit SwAccAllTableSelHandler_Impl(sal_Int32 nSize)
+        : m_aSelected(nSize, true)
+        , m_nCount(nSize)
+    {
+    }
+
+    uno::Sequence < sal_Int32 > GetSelSequence();
+
+    virtual void Unselect( sal_Int32 nRowOrCol, sal_Int32 nExt ) override;
+    virtual ~SwAccAllTableSelHandler_Impl();
+};
+
+}
+
+SwAccAllTableSelHandler_Impl::~SwAccAllTableSelHandler_Impl()
+{
+}
+
+uno::Sequence < sal_Int32 > SwAccAllTableSelHandler_Impl::GetSelSequence()
+{
+    OSL_ENSURE( m_nCount >= 0, "underflow" );
+    uno::Sequence < sal_Int32 > aRet( m_nCount );
+    sal_Int32 *pRet = aRet.getArray();
+    sal_Int32 nPos = 0;
+    size_t nSize = m_aSelected.size();
+    for( size_t i=0; i < nSize && nPos < m_nCount; i++ )
+    {
+        if( m_aSelected[i] )
+        {
+            *pRet++ = i;
+            nPos++;
+        }
+    }
+
+    OSL_ENSURE( nPos == m_nCount, "count is wrong" );
+
+    return aRet;
+}
+
+void SwAccAllTableSelHandler_Impl::Unselect( sal_Int32 nRowOrCol,
+                                            sal_Int32 nExt )
+{
+    OSL_ENSURE( o3tl::make_unsigned( nRowOrCol ) < m_aSelected.size(),
+             "index too large" );
+    OSL_ENSURE( o3tl::make_unsigned( nRowOrCol+nExt ) <= m_aSelected.size(),
+             "extent too large" );
+    while( nExt )
+    {
+        if( m_aSelected[static_cast< size_t >( nRowOrCol )] )
+        {
+            m_aSelected[static_cast< size_t >( nRowOrCol )] = false;
+            m_nCount--;
+        }
+        nExt--;
+        nRowOrCol++;
+    }
+}
+
+const SwSelBoxes *SwAccessibleTable::GetSelBoxes() const
+{
+    const SwSelBoxes *pSelBoxes = nullptr;
+    const SwCursorShell *pCSh = GetCursorShell();
+    if( (pCSh != nullptr) && pCSh->IsTableMode() )
+    {
+        pSelBoxes = &pCSh->GetTableCursor()->GetSelectedBoxes();
+    }
+
+    return pSelBoxes;
+}
+
+void SwAccessibleTable::FireTableChangeEvent(
+        const SwAccessibleTableData_Impl& rTableData )
+{
+    AccessibleTableModelChange aModelChange;
+    aModelChange.Type = AccessibleTableModelChangeType::UPDATE;
+    aModelChange.FirstRow = 0;
+    aModelChange.LastRow = rTableData.GetRowCount() - 1;
+    aModelChange.FirstColumn = 0;
+    aModelChange.LastColumn = rTableData.GetColumnCount() - 1;
+
+    AccessibleEventObject aEvent;
+    aEvent.EventId = AccessibleEventId::TABLE_MODEL_CHANGED;
+    aEvent.NewValue <<= aModelChange;
+
+    FireAccessibleEvent( aEvent );
+}
+
+const SwTableBox* SwAccessibleTable::GetTableBox( sal_Int32 nChildIndex ) const
+{
+    OSL_ENSURE( nChildIndex >= 0, "Illegal child index." );
+    OSL_ENSURE( nChildIndex < const_cast<SwAccessibleTable*>(this)->getAccessibleChildCount(), "Illegal child index." ); // #i77106#
+
+    const SwTableBox* pBox = nullptr;
+
+    // get table box for 'our' table cell
+    SwAccessibleChild aCell( GetChild( *const_cast<SwAccessibleMap*>(GetMap()), nChildIndex ) );
+    if( aCell.GetSwFrame()  )
+    {
+        const SwFrame* pChildFrame = aCell.GetSwFrame();
+        if( (pChildFrame != nullptr) && pChildFrame->IsCellFrame() )
+        {
+            const SwCellFrame* pCellFrame =
+                static_cast<const SwCellFrame*>( pChildFrame );
+            pBox = pCellFrame->GetTabBox();
+        }
+    }
+
+    OSL_ENSURE( pBox != nullptr, "We need the table box." );
+    return pBox;
+}
+
+bool SwAccessibleTable::IsChildSelected( sal_Int32 nChildIndex ) const
+{
+    bool bRet = false;
+    const SwSelBoxes* pSelBoxes = GetSelBoxes();
+    if( pSelBoxes )
+    {
+        const SwTableBox* pBox = GetTableBox( nChildIndex );
+        OSL_ENSURE( pBox != nullptr, "We need the table box." );
+        bRet = pSelBoxes->find( const_cast<SwTableBox*>( pBox ) ) != pSelBoxes->end();
+    }
+
+    return bRet;
+}
+
+sal_Int32 SwAccessibleTable::GetIndexOfSelectedChild(
+                sal_Int32 nSelectedChildIndex ) const
+{
+    // iterate over all children to n-th isAccessibleChildSelected()
+    sal_Int32 nChildren = const_cast<SwAccessibleTable*>(this)->getAccessibleChildCount(); // #i77106#
+    if( nSelectedChildIndex >= nChildren )
+        return -1;
+
+    sal_Int32 n = 0;
+    while( n < nChildren )
+    {
+        if( IsChildSelected( n ) )
+        {
+            if( 0 == nSelectedChildIndex )
+                break;
+            else
+                --nSelectedChildIndex;
+        }
+        ++n;
+    }
+
+    return n < nChildren ? n : -1;
+}
+
+void SwAccessibleTable::GetStates(
+        ::utl::AccessibleStateSetHelper& rStateSet )
+{
+    SwAccessibleContext::GetStates( rStateSet );
+    //Add resizable state to table
+    rStateSet.AddState( AccessibleStateType::RESIZABLE );
+    // MULTISELECTABLE
+    rStateSet.AddState( AccessibleStateType::MULTI_SELECTABLE );
+    SwCursorShell* pCursorShell = GetCursorShell();
+    if( pCursorShell  )
+        rStateSet.AddState( AccessibleStateType::MULTI_SELECTABLE );
+}
+
+SwAccessibleTable::SwAccessibleTable(
+        std::shared_ptr<SwAccessibleMap> const& pInitMap,
+        const SwTabFrame* pTabFrame  ) :
+    SwAccessibleContext( pInitMap, AccessibleRole::TABLE, pTabFrame )
+{
+    const SwFrameFormat* pFrameFormat = pTabFrame->GetFormat();
+    if(pFrameFormat)
+        StartListening(const_cast<SwFrameFormat*>(pFrameFormat)->GetNotifier());
+
+    SetName( pFrameFormat->GetName() + "-" + OUString::number( pTabFrame->GetPhyPageNum() ) );
+
+    const OUString sArg1( static_cast< const SwTabFrame * >( GetFrame() )->GetFormat()->GetName() );
+    const OUString sArg2( GetFormattedPageNumber() );
+
+    m_sDesc = GetResource( STR_ACCESS_TABLE_DESC, &sArg1, &sArg2 );
+    UpdateTableData();
+}
+
+SwAccessibleTable::~SwAccessibleTable()
+{
+    SolarMutexGuard aGuard;
+
+    mpTableData.reset();
+}
+
+void SwAccessibleTable::Notify(const SfxHint& rHint)
+{
+    if(rHint.GetId() == SfxHintId::Dying)
+    {
+        EndListeningAll();
+    }
+    else if (rHint.GetId() == SfxHintId::SwLegacyModify)
+    {
+        auto pLegacyHint = static_cast<const sw::LegacyModifyHint*>(&rHint);
+        const sal_uInt16 nWhich = pLegacyHint->GetWhich();
+        const SwTabFrame* pTabFrame = static_cast<const SwTabFrame*>(GetFrame());
+        if(nWhich == RES_NAME_CHANGED && pTabFrame)
+        {
+            const SwFrameFormat *pFrameFormat = pTabFrame->GetFormat();
+
+            const OUString sOldName( GetName() );
+            const OUString sNewTabName = pFrameFormat->GetName();
+
+            SetName( sNewTabName + "-" + OUString::number( pTabFrame->GetPhyPageNum() ) );
+
+            if( sOldName != GetName() )
+            {
+                AccessibleEventObject aEvent;
+                aEvent.EventId = AccessibleEventId::NAME_CHANGED;
+                aEvent.OldValue <<= sOldName;
+                aEvent.NewValue <<= GetName();
+                FireAccessibleEvent( aEvent );
+            }
+
+            const OUString sOldDesc( m_sDesc );
+            const OUString sArg2( GetFormattedPageNumber() );
+
+            m_sDesc = GetResource( STR_ACCESS_TABLE_DESC, &sNewTabName, &sArg2 );
+            if( m_sDesc != sOldDesc )
+            {
+                AccessibleEventObject aEvent;
+                aEvent.EventId = AccessibleEventId::DESCRIPTION_CHANGED;
+                aEvent.OldValue <<= sOldDesc;
+                aEvent.NewValue <<= m_sDesc;
+                FireAccessibleEvent( aEvent );
+            }
+        }
+    }
+}
+
+uno::Any SwAccessibleTable::queryInterface( const uno::Type& rType )
+{
+    uno::Any aRet;
+    if ( rType == cppu::UnoType<XAccessibleTable>::get() )
+    {
+        uno::Reference<XAccessibleTable> xThis( this );
+        aRet <<= xThis;
+    }
+    else if ( rType == cppu::UnoType<XAccessibleSelection>::get() )
+    {
+        uno::Reference<XAccessibleSelection> xSelection( this );
+        aRet <<= xSelection;
+    }
+    else if ( rType == cppu::UnoType<XAccessibleTableSelection>::get() )
+    {
+        uno::Reference<XAccessibleTableSelection> xTableExtent( this );
+        aRet <<= xTableExtent;
+    }
+    else
+    {
+        aRet = SwAccessibleContext::queryInterface(rType);
+    }
+
+    return aRet;
+}
+
+// XTypeProvider
+uno::Sequence< uno::Type > SAL_CALL SwAccessibleTable::getTypes()
+{
+    return cppu::OTypeCollection(
+        cppu::UnoType<XAccessibleSelection>::get(),
+        cppu::UnoType<XAccessibleTable>::get(),
+        SwAccessibleContext::getTypes() ).getTypes();
+}
+
+uno::Sequence< sal_Int8 > SAL_CALL SwAccessibleTable::getImplementationId()
+{
+    return css::uno::Sequence<sal_Int8>();
+}
+
+// #i77106#
+std::unique_ptr<SwAccessibleTableData_Impl> SwAccessibleTable::CreateNewTableData()
+{
+    const SwTabFrame* pTabFrame = static_cast<const SwTabFrame*>( GetFrame() );
+    return std::unique_ptr<SwAccessibleTableData_Impl>(new SwAccessibleTableData_Impl( *GetMap(), pTabFrame, IsInPagePreview() ));
+}
+
+void SwAccessibleTable::UpdateTableData()
+{
+    // #i77106# - usage of new method <CreateNewTableData()>
+    mpTableData = CreateNewTableData();
+}
+
+void SwAccessibleTable::ClearTableData()
+{
+    mpTableData.reset();
+}
+
+OUString SAL_CALL SwAccessibleTable::getAccessibleDescription()
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    return m_sDesc;
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getAccessibleRowCount()
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    return  GetTableData().GetRowCount();
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getAccessibleColumnCount(  )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    return GetTableData().GetColumnCount();
+}
+
+OUString SAL_CALL SwAccessibleTable::getAccessibleRowDescription(
+            sal_Int32 nRow )
+{
+    // #i87532# - determine table cell in <nRow>th row and
+    // in first column of row header table and return its text content.
+    OUString sRowDesc;
+
+    GetTableData().CheckRowAndCol(nRow, 0, this);
+
+    uno::Reference< XAccessibleTable > xTableRowHeader = getAccessibleRowHeaders();
+    if ( xTableRowHeader.is() )
+    {
+        uno::Reference< XAccessible > xRowHeaderCell =
+                        xTableRowHeader->getAccessibleCellAt( nRow, 0 );
+        OSL_ENSURE( xRowHeaderCell.is(),
+                "<SwAccessibleTable::getAccessibleRowDescription(..)> - missing row header cell -> serious issue." );
+        uno::Reference< XAccessibleContext > xRowHeaderCellContext =
+                                    xRowHeaderCell->getAccessibleContext();
+        const sal_Int32 nCellChildCount( xRowHeaderCellContext->getAccessibleChildCount() );
+        for ( sal_Int32 nChildIndex = 0; nChildIndex < nCellChildCount; ++nChildIndex )
+        {
+            uno::Reference< XAccessible > xChild = xRowHeaderCellContext->getAccessibleChild( nChildIndex );
+            uno::Reference< XAccessibleText > xChildText( xChild, uno::UNO_QUERY );
+            if ( xChildText.is() )
+            {
+                sRowDesc += xChildText->getText();
+            }
+        }
+    }
+
+    return sRowDesc;
+}
+
+OUString SAL_CALL SwAccessibleTable::getAccessibleColumnDescription(
+            sal_Int32 nColumn )
+{
+    // #i87532# - determine table cell in first row and
+    // in <nColumn>th column of column header table and return its text content.
+    OUString sColumnDesc;
+
+    GetTableData().CheckRowAndCol(0, nColumn, this);
+
+    uno::Reference< XAccessibleTable > xTableColumnHeader = getAccessibleColumnHeaders();
+    if ( xTableColumnHeader.is() )
+    {
+        uno::Reference< XAccessible > xColumnHeaderCell =
+                        xTableColumnHeader->getAccessibleCellAt( 0, nColumn );
+        OSL_ENSURE( xColumnHeaderCell.is(),
+                "<SwAccessibleTable::getAccessibleColumnDescription(..)> - missing column header cell -> serious issue." );
+        uno::Reference< XAccessibleContext > xColumnHeaderCellContext =
+                                    xColumnHeaderCell->getAccessibleContext();
+        const sal_Int32 nCellChildCount( xColumnHeaderCellContext->getAccessibleChildCount() );
+        for ( sal_Int32 nChildIndex = 0; nChildIndex < nCellChildCount; ++nChildIndex )
+        {
+            uno::Reference< XAccessible > xChild = xColumnHeaderCellContext->getAccessibleChild( nChildIndex );
+            uno::Reference< XAccessibleText > xChildText( xChild, uno::UNO_QUERY );
+            if ( xChildText.is() )
+            {
+                sColumnDesc += xChildText->getText();
+            }
+        }
+    }
+
+    return sColumnDesc;
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getAccessibleRowExtentAt(
+            sal_Int32 nRow, sal_Int32 nColumn )
+{
+    sal_Int32 nExtend = -1;
+
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    UpdateTableData();
+    GetTableData().CheckRowAndCol( nRow, nColumn, this );
+
+    Int32Set_Impl::const_iterator aSttCol(
+                                    GetTableData().GetColumnIter( nColumn ) );
+    Int32Set_Impl::const_iterator aSttRow(
+                                    GetTableData().GetRowIter( nRow ) );
+    const SwFrame *pCellFrame = GetTableData().GetCellAtPos( *aSttCol, *aSttRow );
+    if( pCellFrame )
+    {
+        sal_Int32 nBottom = pCellFrame->getFrameArea().Bottom();
+        nBottom -= GetFrame()->getFrameArea().Top();
+        Int32Set_Impl::const_iterator aEndRow(
+                GetTableData().GetRows().upper_bound( nBottom ) );
+        nExtend =
+             static_cast< sal_Int32 >( std::distance( aSttRow, aEndRow ) );
+    }
+
+    return nExtend;
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getAccessibleColumnExtentAt(
+               sal_Int32 nRow, sal_Int32 nColumn )
+{
+    sal_Int32 nExtend = -1;
+
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+    UpdateTableData();
+
+    GetTableData().CheckRowAndCol( nRow, nColumn, this );
+
+    Int32Set_Impl::const_iterator aSttCol(
+                                    GetTableData().GetColumnIter( nColumn ) );
+    Int32Set_Impl::const_iterator aSttRow(
+                                    GetTableData().GetRowIter( nRow ) );
+    const SwFrame *pCellFrame = GetTableData().GetCellAtPos( *aSttCol, *aSttRow );
+    if( pCellFrame )
+    {
+        sal_Int32 nRight = pCellFrame->getFrameArea().Right();
+        nRight -= GetFrame()->getFrameArea().Left();
+        Int32Set_Impl::const_iterator aEndCol(
+                GetTableData().GetColumns().upper_bound( nRight ) );
+        nExtend =
+             static_cast< sal_Int32 >( std::distance( aSttCol, aEndCol ) );
+    }
+
+    return nExtend;
+}
+
+uno::Reference< XAccessibleTable > SAL_CALL
+        SwAccessibleTable::getAccessibleRowHeaders(  )
+{
+    // Row headers aren't supported
+    return uno::Reference< XAccessibleTable >();
+}
+
+uno::Reference< XAccessibleTable > SAL_CALL
+        SwAccessibleTable::getAccessibleColumnHeaders(  )
+{
+    SolarMutexGuard aGuard;
+
+    // #i87532# - assure that return accessible object is empty,
+    // if no column header exists.
+    rtl::Reference<SwAccessibleTableColHeaders> pTableColHeaders =
+        new SwAccessibleTableColHeaders(GetMap()->shared_from_this(),
+                    static_cast<const SwTabFrame *>(GetFrame()));
+    if ( pTableColHeaders->getAccessibleChildCount() <= 0 )
+    {
+        return uno::Reference< XAccessibleTable >();
+    }
+
+    return pTableColHeaders;
+}
+
+uno::Sequence< sal_Int32 > SAL_CALL SwAccessibleTable::getSelectedAccessibleRows()
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    const SwSelBoxes *pSelBoxes = GetSelBoxes();
+    if( pSelBoxes )
+    {
+        sal_Int32 nRows = GetTableData().GetRowCount();
+        SwAccAllTableSelHandler_Impl aSelRows( nRows  );
+
+        GetTableData().GetSelection( 0, nRows, *pSelBoxes, aSelRows,
+                                      false );
+
+        return aSelRows.GetSelSequence();
+    }
+    else
+    {
+        return uno::Sequence< sal_Int32 >( 0 );
+    }
+}
+
+uno::Sequence< sal_Int32 > SAL_CALL SwAccessibleTable::getSelectedAccessibleColumns()
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    const SwSelBoxes *pSelBoxes = GetSelBoxes();
+    if( pSelBoxes )
+    {
+        sal_Int32 nCols = GetTableData().GetColumnCount();
+        SwAccAllTableSelHandler_Impl aSelCols( nCols );
+
+        GetTableData().GetSelection( 0, nCols, *pSelBoxes, aSelCols, true );
+
+        return aSelCols.GetSelSequence();
+    }
+    else
+    {
+        return uno::Sequence< sal_Int32 >( 0 );
+    }
+}
+
+sal_Bool SAL_CALL SwAccessibleTable::isAccessibleRowSelected( sal_Int32 nRow )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    GetTableData().CheckRowAndCol( nRow, 0, this );
+
+    bool bRet;
+    const SwSelBoxes *pSelBoxes = GetSelBoxes();
+    if( pSelBoxes )
+    {
+        SwAccSingleTableSelHandler_Impl aSelRow;
+        GetTableData().GetSelection( nRow, nRow+1, *pSelBoxes, aSelRow,
+                                     false );
+        bRet = aSelRow.IsSelected();
+    }
+    else
+    {
+        bRet = false;
+    }
+
+    return bRet;
+}
+
+sal_Bool SAL_CALL SwAccessibleTable::isAccessibleColumnSelected(
+        sal_Int32 nColumn )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    GetTableData().CheckRowAndCol( 0, nColumn, this );
+
+    bool bRet;
+    const SwSelBoxes *pSelBoxes = GetSelBoxes();
+    if( pSelBoxes )
+    {
+        SwAccSingleTableSelHandler_Impl aSelCol;
+
+        GetTableData().GetSelection( nColumn, nColumn+1, *pSelBoxes, aSelCol,
+                                     true );
+        bRet = aSelCol.IsSelected();
+    }
+    else
+    {
+        bRet = false;
+    }
+
+    return bRet;
+}
+
+uno::Reference< XAccessible > SAL_CALL SwAccessibleTable::getAccessibleCellAt(
+        sal_Int32 nRow, sal_Int32 nColumn )
+{
+    uno::Reference< XAccessible > xRet;
+
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    const SwFrame *pCellFrame =
+                    GetTableData().GetCell( nRow, nColumn, this );
+    if( pCellFrame )
+        xRet = GetMap()->GetContext( pCellFrame );
+
+    return xRet;
+}
+
+uno::Reference< XAccessible > SAL_CALL SwAccessibleTable::getAccessibleCaption()
+{
+    // captions aren't supported
+    return uno::Reference< XAccessible >();
+}
+
+uno::Reference< XAccessible > SAL_CALL SwAccessibleTable::getAccessibleSummary()
+{
+    // summaries aren't supported
+    return uno::Reference< XAccessible >();
+}
+
+sal_Bool SAL_CALL SwAccessibleTable::isAccessibleSelected(
+            sal_Int32 nRow, sal_Int32 nColumn )
+{
+    bool bRet = false;
+
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    const SwFrame *pFrame =
+                    GetTableData().GetCell( nRow, nColumn, this );
+    if( pFrame && pFrame->IsCellFrame() )
+    {
+        const SwSelBoxes *pSelBoxes = GetSelBoxes();
+        if( pSelBoxes )
+        {
+            const SwCellFrame *pCFrame = static_cast < const SwCellFrame * >( pFrame );
+            SwTableBox *pBox =
+                const_cast< SwTableBox *>( pCFrame->GetTabBox() );
+            bRet = pSelBoxes->find( pBox ) != pSelBoxes->end();
+        }
+    }
+
+    return bRet;
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getAccessibleIndex(
+            sal_Int32 nRow, sal_Int32 nColumn )
+{
+    sal_Int32 nRet = -1;
+
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    SwAccessibleChild aCell( GetTableData().GetCell( nRow, nColumn, this ));
+    if ( aCell.IsValid() )
+    {
+        nRet = GetChildIndex( *(GetMap()), aCell );
+    }
+
+    return nRet;
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getAccessibleRow( sal_Int32 nChildIndex )
+{
+    sal_Int32 nRet = -1;
+
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    // #i77106#
+    if ( ( nChildIndex < 0 ) ||
+         ( nChildIndex >= getAccessibleChildCount() ) )
+    {
+        throw lang::IndexOutOfBoundsException();
+    }
+
+    SwAccessibleChild aCell( GetChild( *(GetMap()), nChildIndex ) );
+    if ( aCell.GetSwFrame()  )
+    {
+        sal_Int32 nTop = aCell.GetSwFrame()->getFrameArea().Top();
+        nTop -= GetFrame()->getFrameArea().Top();
+        Int32Set_Impl::const_iterator aRow(
+                GetTableData().GetRows().lower_bound( nTop ) );
+        nRet = static_cast< sal_Int32 >( std::distance(
+                    GetTableData().GetRows().begin(), aRow ) );
+    }
+    else
+    {
+        OSL_ENSURE( !aCell.IsValid(), "SwAccessibleTable::getAccessibleColumn:"
+                "aCell not expected to be valid.");
+
+        throw lang::IndexOutOfBoundsException();
+    }
+
+    return nRet;
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getAccessibleColumn(
+        sal_Int32 nChildIndex )
+{
+    sal_Int32 nRet = -1;
+
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    // #i77106#
+    if ( ( nChildIndex < 0 ) ||
+         ( nChildIndex >= getAccessibleChildCount() ) )
+    {
+        throw lang::IndexOutOfBoundsException();
+    }
+
+    SwAccessibleChild aCell( GetChild( *(GetMap()), nChildIndex ) );
+    if ( aCell.GetSwFrame()  )
+    {
+        sal_Int32 nLeft = aCell.GetSwFrame()->getFrameArea().Left();
+        nLeft -= GetFrame()->getFrameArea().Left();
+        Int32Set_Impl::const_iterator aCol(
+                GetTableData().GetColumns().lower_bound( nLeft ) );
+        nRet = static_cast< sal_Int32 >( std::distance(
+                    GetTableData().GetColumns().begin(), aCol ) );
+    }
+    else
+    {
+        OSL_ENSURE( !aCell.IsValid(), "SwAccessibleTable::getAccessibleColumn:"
+                "aCell not expected to be valid.");
+
+        throw lang::IndexOutOfBoundsException();
+    }
+
+    return nRet;
+}
+
+OUString SAL_CALL SwAccessibleTable::getImplementationName()
+{
+    return "com.sun.star.comp.Writer.SwAccessibleTableView";
+}
+
+sal_Bool SAL_CALL SwAccessibleTable::supportsService(
+        const OUString& sTestServiceName)
+{
+    return cppu::supportsService(this, sTestServiceName);
+}
+
+uno::Sequence< OUString > SAL_CALL SwAccessibleTable::getSupportedServiceNames()
+{
+    return { "com.sun.star.table.AccessibleTableView", sAccessibleServiceName };
+}
+
+void SwAccessibleTable::InvalidatePosOrSize( const SwRect& rOldBox )
+{
+    SolarMutexGuard aGuard;
+
+    //need to update children
+    std::unique_ptr<SwAccessibleTableData_Impl> pNewTableData = CreateNewTableData();
+    if( !pNewTableData->CompareExtents( GetTableData() ) )
+    {
+        mpTableData = std::move(pNewTableData);
+        FireTableChangeEvent(*mpTableData);
+    }
+    if( HasTableData() )
+        GetTableData().SetTablePos( GetFrame()->getFrameArea().Pos() );
+
+    SwAccessibleContext::InvalidatePosOrSize( rOldBox );
+}
+
+void SwAccessibleTable::Dispose(bool bRecursive, bool bCanSkipInvisible)
+{
+    SolarMutexGuard aGuard;
+    EndListeningAll();
+    SwAccessibleContext::Dispose(bRecursive, bCanSkipInvisible);
+}
+
+void SwAccessibleTable::DisposeChild( const SwAccessibleChild& rChildFrameOrObj,
+                                      bool bRecursive, bool bCanSkipInvisible )
+{
+    SolarMutexGuard aGuard;
+
+    const SwFrame *pFrame = rChildFrameOrObj.GetSwFrame();
+    OSL_ENSURE( pFrame, "frame expected" );
+    if( HasTableData() )
+    {
+        FireTableChangeEvent( GetTableData() );
+        ClearTableData();
+    }
+
+    // There are two reason why this method has been called. The first one
+    // is there is no context for pFrame. The method is then called by
+    // the map, and we have to call our superclass.
+    // The other situation is that we have been call by a call to get notified
+    // about its change. We then must not call the superclass
+    uno::Reference< XAccessible > xAcc( GetMap()->GetContext( pFrame, false ) );
+    if( !xAcc.is() )
+        SwAccessibleContext::DisposeChild( rChildFrameOrObj, bRecursive, bCanSkipInvisible );
+}
+
+void SwAccessibleTable::InvalidateChildPosOrSize( const SwAccessibleChild& rChildFrameOrObj,
+                                                  const SwRect& rOldBox )
+{
+    SolarMutexGuard aGuard;
+
+    if( HasTableData() )
+    {
+        SAL_WARN_IF( HasTableData() &&
+                GetFrame()->getFrameArea().Pos() != GetTableData().GetTablePos(),
+                "sw.a11y", "table has invalid position" );
+        if( HasTableData() )
+        {
+            std::unique_ptr<SwAccessibleTableData_Impl> pNewTableData = CreateNewTableData(); // #i77106#
+            if( !pNewTableData->CompareExtents( GetTableData() ) )
+            {
+                if (pNewTableData->GetRowCount() != mpTableData->GetRowCount()
+                    && 1 < GetTableData().GetRowCount())
+                {
+                    Int32Set_Impl::const_iterator aSttCol( GetTableData().GetColumnIter( 0 ) );
+                    Int32Set_Impl::const_iterator aSttRow( GetTableData().GetRowIter( 1 ) );
+                    const SwFrame *pCellFrame = GetTableData().GetCellAtPos( *aSttCol, *aSttRow );
+                    Int32Set_Impl::const_iterator aSttCol2( pNewTableData->GetColumnIter( 0 ) );
+                    Int32Set_Impl::const_iterator aSttRow2( pNewTableData->GetRowIter( 0 ) );
+                    const SwFrame *pCellFrame2 = pNewTableData->GetCellAtPos( *aSttCol2, *aSttRow2 );
+
+                    if(pCellFrame == pCellFrame2)
+                    {
+                        AccessibleTableModelChange aModelChange;
+                        aModelChange.Type = AccessibleTableModelChangeType::UPDATE;
+                        aModelChange.FirstRow = 0;
+                        aModelChange.LastRow = mpTableData->GetRowCount() - 1;
+                        aModelChange.FirstColumn = 0;
+                        aModelChange.LastColumn = mpTableData->GetColumnCount() - 1;
+
+                        AccessibleEventObject aEvent;
+                        aEvent.EventId = AccessibleEventId::TABLE_COLUMN_HEADER_CHANGED;
+                        aEvent.NewValue <<= aModelChange;
+
+                        FireAccessibleEvent( aEvent );
+                    }
+                }
+                else
+                    FireTableChangeEvent( GetTableData() );
+                ClearTableData();
+                mpTableData = std::move(pNewTableData);
+            }
+        }
+    }
+
+    // #i013961# - always call super class method
+    SwAccessibleContext::InvalidateChildPosOrSize( rChildFrameOrObj, rOldBox );
+}
+
+// XAccessibleSelection
+
+void SAL_CALL SwAccessibleTable::selectAccessibleChild(
+    sal_Int32 nChildIndex )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    if( (nChildIndex < 0) || (nChildIndex >= getAccessibleChildCount()) ) // #i77106#
+        throw lang::IndexOutOfBoundsException();
+
+    // preliminaries: get 'our' table box, and get the cursor shell
+    const SwTableBox* pBox = GetTableBox( nChildIndex );
+    OSL_ENSURE( pBox != nullptr, "We need the table box." );
+
+    SwCursorShell* pCursorShell = GetCursorShell();
+    if( pCursorShell == nullptr )
+        return;
+
+    // assure, that child, identified by the given index, isn't already selected.
+    if ( IsChildSelected( nChildIndex ) )
+    {
+        return;
+    }
+
+    // now we can start to do the work: check whether we already have
+    // a table selection (in 'our' table). If so, extend the
+    // selection, else select the current cell.
+
+    // if we have a selection in a table, check if it's in the
+    // same table that we're trying to select in
+    const SwTableNode* pSelectedTable = pCursorShell->IsCursorInTable();
+    if( pSelectedTable != nullptr )
+    {
+        // get top-most table line
+        const SwTableLine* pUpper = pBox->GetUpper();
+        while( pUpper->GetUpper() != nullptr )
+            pUpper = pUpper->GetUpper()->GetUpper();
+        sal_uInt16 nPos =
+            pSelectedTable->GetTable().GetTabLines().GetPos( pUpper );
+        if( nPos == USHRT_MAX )
+            pSelectedTable = nullptr;
+    }
+
+    // create the new selection
+    const SwStartNode* pStartNode = pBox->GetSttNd();
+    if( pSelectedTable == nullptr || !pCursorShell->GetTableCrs() )
+    {
+        pCursorShell->StartAction();
+        // Set cursor into current cell. This deletes any table cursor.
+        SwPaM aPaM( *pStartNode );
+        aPaM.Move( fnMoveForward, GoInNode );
+        Select( aPaM );
+        // Move cursor to the end of the table creating a selection and a table
+        // cursor.
+        pCursorShell->SetMark();
+        pCursorShell->MoveTable( GotoCurrTable, fnTableEnd );
+        // now set the cursor into the cell again.
+        SwPaM *pPaM = pCursorShell->GetTableCrs() ? pCursorShell->GetTableCrs()
+                                                    : pCursorShell->GetCursor();
+        *pPaM->GetPoint() = *pPaM->GetMark();
+        pCursorShell->EndAction();
+        // we now have one cell selected!
+    }
+    else
+    {
+        // if the cursor is already in this table,
+        // expand the current selection (i.e., set
+        // point to new position; keep mark)
+        SwPaM aPaM( *pStartNode );
+        aPaM.Move( fnMoveForward, GoInNode );
+        aPaM.SetMark();
+        const SwPaM *pPaM = pCursorShell->GetTableCrs() ? pCursorShell->GetTableCrs()
+                                                    : pCursorShell->GetCursor();
+        *(aPaM.GetMark()) = *pPaM->GetMark();
+        Select( aPaM );
+
+    }
+}
+
+sal_Bool SAL_CALL SwAccessibleTable::isAccessibleChildSelected(
+    sal_Int32 nChildIndex )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    if( (nChildIndex < 0) || (nChildIndex >= getAccessibleChildCount()) ) // #i77106#
+        throw lang::IndexOutOfBoundsException();
+
+    return IsChildSelected( nChildIndex );
+}
+
+void SAL_CALL SwAccessibleTable::clearAccessibleSelection(  )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    SwCursorShell* pCursorShell = GetCursorShell();
+    if( pCursorShell != nullptr )
+    {
+        pCursorShell->StartAction();
+        pCursorShell->ClearMark();
+        pCursorShell->EndAction();
+    }
+}
+
+void SAL_CALL SwAccessibleTable::selectAllAccessibleChildren(  )
+{
+    // first clear selection, then select first and last child
+    clearAccessibleSelection();
+    selectAccessibleChild( 0 );
+    selectAccessibleChild( getAccessibleChildCount()-1 ); // #i77106#
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getSelectedAccessibleChildCount(  )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    // iterate over all children and count isAccessibleChildSelected()
+    sal_Int32 nCount = 0;
+
+    sal_Int32 nChildren = getAccessibleChildCount(); // #i71106#
+    for( sal_Int32 n = 0; n < nChildren; n++ )
+        if( IsChildSelected( n ) )
+            nCount++;
+
+    return nCount;
+}
+
+uno::Reference<XAccessible> SAL_CALL SwAccessibleTable::getSelectedAccessibleChild(
+    sal_Int32 nSelectedChildIndex )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    // parameter checking (part 1): index lower 0
+    if( nSelectedChildIndex < 0 )
+        throw lang::IndexOutOfBoundsException();
+
+    sal_Int32 nChildIndex = GetIndexOfSelectedChild( nSelectedChildIndex );
+
+    // parameter checking (part 2): index higher than selected children?
+    if( nChildIndex < 0 )
+        throw lang::IndexOutOfBoundsException();
+
+    // #i77106#
+    if ( nChildIndex >= getAccessibleChildCount() )
+    {
+        throw lang::IndexOutOfBoundsException();
+    }
+
+    return getAccessibleChild( nChildIndex );
+}
+
+// index has to be treated as global child index.
+void SAL_CALL SwAccessibleTable::deselectAccessibleChild(
+    sal_Int32 nChildIndex )
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    SwCursorShell* pCursorShell = GetCursorShell();
+
+    // index has to be treated as global child index
+    if ( !pCursorShell )
+        throw lang::IndexOutOfBoundsException();
+
+    // assure, that given child index is in bounds.
+    if ( nChildIndex < 0 || nChildIndex >= getAccessibleChildCount() ) // #i77106#
+        throw lang::IndexOutOfBoundsException();
+
+    // assure, that child, identified by the given index, is selected.
+    if ( !IsChildSelected( nChildIndex ) )
+        return;
+
+    const SwTableBox* pBox = GetTableBox( nChildIndex );
+    OSL_ENSURE( pBox != nullptr, "We need the table box." );
+
+    // If we unselect point, then set cursor to mark. If we clear another
+    // selected box, then set cursor to point.
+    // reduce selection to mark.
+    SwPaM *pPaM = pCursorShell->GetTableCrs() ? pCursorShell->GetTableCrs()
+                                                : pCursorShell->GetCursor();
+    bool bDeselectPoint =
+        pBox->GetSttNd() ==
+            pPaM->GetPoint()->nNode.GetNode().FindTableBoxStartNode();
+
+    SwPaM aPaM( bDeselectPoint ? *pPaM->GetMark() : *pPaM->GetPoint() );
+
+    pCursorShell->StartAction();
+
+    // Set cursor into either point or mark
+    Select( aPaM );
+    // Move cursor to the end of the table creating a selection and a table
+    // cursor.
+    pCursorShell->SetMark();
+    pCursorShell->MoveTable( GotoCurrTable, fnTableEnd );
+    // now set the cursor into the cell again.
+    pPaM = pCursorShell->GetTableCrs() ? pCursorShell->GetTableCrs()
+                                        : pCursorShell->GetCursor();
+    *pPaM->GetPoint() = *pPaM->GetMark();
+    pCursorShell->EndAction();
+}
+
+sal_Int32 SAL_CALL SwAccessibleTable::getBackground()
+{
+    const SvxBrushItem &rBack = GetFrame()->GetAttrSet()->GetBackground();
+    Color crBack = rBack.GetColor();
+
+    if (COL_AUTO == crBack)
+    {
+        uno::Reference<XAccessible> xAccDoc = getAccessibleParent();
+        if (xAccDoc.is())
+        {
+            uno::Reference<XAccessibleComponent> xComponentDoc(xAccDoc,uno::UNO_QUERY);
+            if (xComponentDoc.is())
+            {
+                crBack = Color(ColorTransparency, xComponentDoc->getBackground());
+            }
+        }
+    }
+    return sal_Int32(crBack);
+}
+
+void SwAccessibleTable::FireSelectionEvent( )
+{
+    AccessibleEventObject aEvent;
+
+    aEvent.EventId = AccessibleEventId::SELECTION_CHANGED_REMOVE;
+
+    for (const auto& rCell : m_vecCellRemove)
+    {
+        // fdo#57197: check if the object is still alive
+        uno::Reference<XAccessible> const xAcc(rCell.second);
+        if (xAcc.is())
+        {
+            SwAccessibleContext *const pAccCell(rCell.first);
+            assert(pAccCell);
+            pAccCell->FireAccessibleEvent(aEvent);
+        }
+    }
+
+    if (m_vecCellAdd.size() <= SELECTION_WITH_NUM)
+    {
+        aEvent.EventId = AccessibleEventId::SELECTION_CHANGED_ADD;
+        for (const auto& rCell : m_vecCellAdd)
+        {
+            // fdo#57197: check if the object is still alive
+            uno::Reference<XAccessible> const xAcc(rCell.second);
+            if (xAcc.is())
+            {
+                SwAccessibleContext *const pAccCell(rCell.first);
+                assert(pAccCell);
+                pAccCell->FireAccessibleEvent(aEvent);
+            }
+        }
+        return ;
+    }
+    else
+    {
+        aEvent.EventId = AccessibleEventId::SELECTION_CHANGED_WITHIN;
+        FireAccessibleEvent(aEvent);
+    }
+}
+
+void SwAccessibleTable::AddSelectionCell(
+        SwAccessibleContext *const pAccCell, bool const bAddOrRemove)
+{
+    uno::Reference<XAccessible> const xTmp(pAccCell);
+    if (bAddOrRemove)
+    {
+        m_vecCellAdd.emplace_back(pAccCell, xTmp);
+    }
+    else
+    {
+        m_vecCellRemove.emplace_back(pAccCell, xTmp);
+    }
+}
+
+// XAccessibleTableSelection
+sal_Bool SAL_CALL SwAccessibleTable::selectRow( sal_Int32 row )
+{
+    SolarMutexGuard g;
+
+    if( isAccessibleColumnSelected( row ) )
+        return true;
+
+    tools::Long lColumnCount = getAccessibleColumnCount();
+    for(tools::Long lCol = 0; lCol < lColumnCount; lCol ++)
+    {
+        tools::Long lChildIndex = getAccessibleIndex(row, lCol);
+        selectAccessibleChild(lChildIndex);
+    }
+
+    return true;
+}
+sal_Bool SAL_CALL SwAccessibleTable::selectColumn( sal_Int32 column )
+{
+    SolarMutexGuard g;
+
+    if( isAccessibleColumnSelected( column ) )
+        return true;
+
+    sal_Int32 lRowCount = getAccessibleRowCount();
+
+    for(sal_Int32 lRow = 0; lRow < lRowCount; lRow ++)
+    {
+        sal_Int32 lChildIndex = getAccessibleIndex(lRow, column);
+        selectAccessibleChild(lChildIndex);
+    }
+    return true;
+}
+
+sal_Bool SAL_CALL SwAccessibleTable::unselectRow( sal_Int32 row )
+{
+    SolarMutexGuard g;
+
+    if( isAccessibleSelected( row , 0 ) &&  isAccessibleSelected( row , getAccessibleColumnCount()-1 ) )
+    {
+        SwCursorShell* pCursorShell = GetCursorShell();
+        if( pCursorShell != nullptr )
+        {
+            pCursorShell->StartAction();
+            pCursorShell->ClearMark();
+            pCursorShell->EndAction();
+            return true;
+        }
+    }
+    return true;
+}
+
+sal_Bool SAL_CALL SwAccessibleTable::unselectColumn( sal_Int32 column )
+{
+    SolarMutexGuard g;
+
+    if( isAccessibleSelected( 0 , column ) &&  isAccessibleSelected( getAccessibleRowCount()-1,column))
+    {
+        SwCursorShell* pCursorShell = GetCursorShell();
+        if( pCursorShell != nullptr )
+        {
+            pCursorShell->StartAction();
+            pCursorShell->ClearMark();
+            pCursorShell->EndAction();
+            return true;
+        }
+    }
+    return true;
+}
+
+// #i77106# - implementation of class <SwAccessibleTableColHeaders>
+SwAccessibleTableColHeaders::SwAccessibleTableColHeaders(
+        std::shared_ptr<SwAccessibleMap> const& pMap,
+        const SwTabFrame *const pTabFrame)
+    : SwAccessibleTable(pMap, pTabFrame)
+{
+    SolarMutexGuard aGuard;
+
+    const SwFrameFormat* pFrameFormat = pTabFrame->GetFormat();
+    if(pFrameFormat)
+        StartListening(const_cast<SwFrameFormat*>(pFrameFormat)->GetNotifier());
+    const OUString aName = pFrameFormat->GetName() + "-ColumnHeaders";
+
+    SetName( aName + "-" + OUString::number( pTabFrame->GetPhyPageNum() ) );
+
+    const OUString sArg2( GetFormattedPageNumber() );
+
+    SetDesc( GetResource( STR_ACCESS_TABLE_DESC, &aName, &sArg2 ) );
+
+    NotRegisteredAtAccessibleMap(); // #i85634#
+}
+
+std::unique_ptr<SwAccessibleTableData_Impl> SwAccessibleTableColHeaders::CreateNewTableData()
+{
+    const SwTabFrame* pTabFrame = static_cast<const SwTabFrame*>( GetFrame() );
+    return std::unique_ptr<SwAccessibleTableData_Impl>(new SwAccessibleTableData_Impl( *(GetMap()), pTabFrame, IsInPagePreview(), true ));
+}
+
+void SwAccessibleTableColHeaders::Notify(const SfxHint& )
+{
+}
+
+// XInterface
+uno::Any SAL_CALL SwAccessibleTableColHeaders::queryInterface( const uno::Type& aType )
+{
+    return SwAccessibleTable::queryInterface( aType );
+}
+
+// XAccessibleContext
+sal_Int32 SAL_CALL SwAccessibleTableColHeaders::getAccessibleChildCount()
+{
+    SolarMutexGuard aGuard;
+
+    ThrowIfDisposed();
+
+    sal_Int32 nCount = 0;
+
+    const SwTabFrame* pTabFrame = static_cast<const SwTabFrame*>( GetFrame() );
+    const SwAccessibleChildSList aVisList( GetVisArea(), *pTabFrame, *(GetMap()) );
+    SwAccessibleChildSList::const_iterator aIter( aVisList.begin() );
+    while( aIter != aVisList.end() )
+    {
+        const SwAccessibleChild& rLower = *aIter;
+        if( rLower.IsAccessible( IsInPagePreview() ) )
+        {
+            nCount++;
+        }
+        else if( rLower.GetSwFrame() )
+        {
+            // There are no unaccessible SdrObjects that count
+            if ( !rLower.GetSwFrame()->IsRowFrame() ||
+                 pTabFrame->IsInHeadline( *(rLower.GetSwFrame()) ) )
+            {
+                nCount += SwAccessibleFrame::GetChildCount( *(GetMap()),
+                                                            GetVisArea(),
+                                                            rLower.GetSwFrame(),
+                                                            IsInPagePreview() );
+            }
+        }
+        ++aIter;
+    }
+
+    return nCount;
+}
+
+uno::Reference< XAccessible> SAL_CALL
+        SwAccessibleTableColHeaders::getAccessibleChild (sal_Int32 nIndex)
+{
+    if ( nIndex < 0 || nIndex >= getAccessibleChildCount() )
+    {
+        throw lang::IndexOutOfBoundsException();
+    }
+
+    return SwAccessibleTable::getAccessibleChild( nIndex );
+}
+
+// XAccessibleTable
+uno::Reference< XAccessibleTable >
+        SAL_CALL SwAccessibleTableColHeaders::getAccessibleRowHeaders()
+{
+    return uno::Reference< XAccessibleTable >();
+}
+
+uno::Reference< XAccessibleTable >
+        SAL_CALL SwAccessibleTableColHeaders::getAccessibleColumnHeaders()
+{
+    return uno::Reference< XAccessibleTable >();
+}
+
+// XServiceInfo
+
+OUString SAL_CALL SwAccessibleTableColHeaders::getImplementationName()
+{
+    static constexpr OUStringLiteral sImplName
+        = u"com.sun.star.comp.Writer.SwAccessibleTableColumnHeadersView";
+    return sImplName;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */