342 lines
12 KiB
C++
342 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <com/sun/star/accessibility/XAccessibleSelection.hpp>
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#include "accselectionhelper.hxx"
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#include "acccontext.hxx"
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#include <accmap.hxx>
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#include <o3tl/safeint.hxx>
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#include <svx/AccessibleShape.hxx>
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#include <viewsh.hxx>
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#include <fesh.hxx>
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#include <vcl/svapp.hxx>
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#include <flyfrm.hxx>
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#include <com/sun/star/uno/Reference.hxx>
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#include <com/sun/star/accessibility/AccessibleStateType.hpp>
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#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
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#include <fmtanchr.hxx>
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using namespace ::com::sun::star::accessibility;
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using namespace ::com::sun::star;
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using namespace ::com::sun::star::uno;
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using ::com::sun::star::accessibility::XAccessible;
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using ::com::sun::star::accessibility::XAccessibleContext;
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using ::com::sun::star::accessibility::XAccessibleSelection;
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using namespace ::sw::access;
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SwAccessibleSelectionHelper::SwAccessibleSelectionHelper(
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SwAccessibleContext& rContext ) :
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m_rContext( rContext )
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{
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}
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SwFEShell* SwAccessibleSelectionHelper::GetFEShell()
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{
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OSL_ENSURE( m_rContext.GetMap() != nullptr, "no map?" );
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SwViewShell* pViewShell = m_rContext.GetMap()->GetShell();
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OSL_ENSURE( pViewShell != nullptr,
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"No view shell? Then what are you looking at?" );
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SwFEShell* pFEShell = dynamic_cast<SwFEShell*>( pViewShell );
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return pFEShell;
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}
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void SwAccessibleSelectionHelper::throwIndexOutOfBoundsException()
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{
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Reference < XAccessibleContext > xThis( &m_rContext );
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Reference < XAccessibleSelection >xSelThis( xThis, UNO_QUERY );
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lang::IndexOutOfBoundsException aExcept(
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u"index out of bounds"_ustr,
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xSelThis );
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throw aExcept;
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}
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// XAccessibleSelection
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void SwAccessibleSelectionHelper::selectAccessibleChild(
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sal_Int64 nChildIndex )
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{
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SolarMutexGuard aGuard;
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if (nChildIndex < 0 || nChildIndex >= m_rContext.GetChildCount(*(m_rContext.GetMap())))
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throwIndexOutOfBoundsException();
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// Get the respective child as SwFrame (also do index checking), ...
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const SwAccessibleChild aChild = m_rContext.GetChild( *(m_rContext.GetMap()),
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nChildIndex );
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if( !aChild.IsValid() )
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throwIndexOutOfBoundsException();
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// we can only select fly frames, so we ignore (should: return
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// false) all other attempts at child selection
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if (GetFEShell())
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{
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const SdrObject *pObj = aChild.GetDrawObject();
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if( pObj )
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m_rContext.Select( const_cast< SdrObject *>( pObj ), nullptr==aChild.GetSwFrame());
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}
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// no frame shell, or no frame, or no fly frame -> can't select
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}
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//When the selected state of the SwFrameOrObj is set, return true.
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static bool lcl_getSelectedState(const SwAccessibleChild& aChild,
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SwAccessibleContext* pContext,
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SwAccessibleMap* pMap)
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{
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Reference< XAccessible > xAcc;
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if ( aChild.GetSwFrame() )
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{
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xAcc = pMap->GetContext( aChild.GetSwFrame(), false );
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}
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else if ( aChild.GetDrawObject() )
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{
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xAcc = pMap->GetContext( aChild.GetDrawObject(), pContext, false );
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}
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if( xAcc.is() )
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{
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Reference< XAccessibleContext > pRContext = xAcc->getAccessibleContext();
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if(!pRContext.is())
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return false;
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sal_Int64 nRStateSet = pRContext->getAccessibleStateSet();
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if(nRStateSet & AccessibleStateType::SELECTED)
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return true;
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}
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return false;
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}
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bool SwAccessibleSelectionHelper::isAccessibleChildSelected(
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sal_Int64 nChildIndex )
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{
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SolarMutexGuard aGuard;
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if (nChildIndex < 0 || nChildIndex >= m_rContext.GetChildCount(*(m_rContext.GetMap())))
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throwIndexOutOfBoundsException();
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// Get the respective child as SwFrame (also do index checking), ...
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const SwAccessibleChild aChild = m_rContext.GetChild( *(m_rContext.GetMap()),
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nChildIndex );
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if( !aChild.IsValid() )
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throwIndexOutOfBoundsException();
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// ... and compare to the currently selected frame
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bool bRet = false;
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if (const SwFEShell* pFEShell = GetFEShell())
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{
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if ( aChild.GetSwFrame() != nullptr )
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{
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bRet = (pFEShell->GetSelectedFlyFrame() == aChild.GetSwFrame());
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}
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else if ( aChild.GetDrawObject() )
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{
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bRet = pFEShell->IsObjSelected( *aChild.GetDrawObject() );
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}
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//If the SwFrameOrObj is not selected directly in the UI, we should check whether it is selected in the selection cursor.
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if( !bRet )
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{
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if( lcl_getSelectedState( aChild, &m_rContext, m_rContext.GetMap() ) )
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bRet = true;
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}
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}
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return bRet;
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}
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void SwAccessibleSelectionHelper::selectAllAccessibleChildren( )
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{
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SolarMutexGuard aGuard;
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// We can select only one. So iterate over the children to find
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// the first we can select, and select it.
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SwFEShell* pFEShell = GetFEShell();
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if (!pFEShell)
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return;
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std::list< SwAccessibleChild > aChildren;
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m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
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for( const SwAccessibleChild& rChild : aChildren )
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{
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const SdrObject* pObj = rChild.GetDrawObject();
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const SwFrame* pFrame = rChild.GetSwFrame();
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if( pObj && !(pFrame != nullptr && pFEShell->IsObjSelected()) )
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{
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m_rContext.Select( const_cast< SdrObject *>( pObj ), nullptr==pFrame );
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if( pFrame )
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break;
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}
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}
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}
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sal_Int64 SwAccessibleSelectionHelper::getSelectedAccessibleChildCount( )
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{
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SolarMutexGuard aGuard;
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sal_Int64 nCount = 0;
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// Only one frame can be selected at a time, and we only frames
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// for selectable children.
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if (const SwFEShell* pFEShell = GetFEShell())
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{
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const SwFlyFrame* pFlyFrame = pFEShell->GetSelectedFlyFrame();
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if( pFlyFrame )
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{
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nCount = 1;
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}
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else
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{
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const size_t nSelObjs = pFEShell->IsObjSelected();
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if( nSelObjs > 0 )
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{
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std::list< SwAccessibleChild > aChildren;
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m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
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for( const SwAccessibleChild& rChild : aChildren )
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{
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if( rChild.GetDrawObject() && !rChild.GetSwFrame() &&
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SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview())
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== m_rContext.GetFrame() &&
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pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
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{
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nCount++;
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}
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if (o3tl::make_unsigned(nCount) >= nSelObjs)
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break;
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}
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}
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}
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//If the SwFrameOrObj is not selected directly in the UI,
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//we should check whether it is selected in the selection cursor.
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if( nCount == 0 )
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{
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std::list< SwAccessibleChild > aChildren;
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m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
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nCount = static_cast<sal_Int32>(std::count_if(aChildren.begin(), aChildren.end(),
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[this](const SwAccessibleChild& aChild) { return lcl_getSelectedState(aChild, &m_rContext, m_rContext.GetMap()); }));
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}
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}
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return nCount;
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}
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Reference<XAccessible> SwAccessibleSelectionHelper::getSelectedAccessibleChild(
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sal_Int64 nSelectedChildIndex )
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{
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SolarMutexGuard aGuard;
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// Since the index is relative to the selected children, and since
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// there can be at most one selected frame child, the index must
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// be 0, and a selection must exist, otherwise we have to throw an
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// lang::IndexOutOfBoundsException
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SwFEShell* pFEShell = GetFEShell();
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if (!pFEShell)
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throwIndexOutOfBoundsException();
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SwAccessibleChild aChild;
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const SwFlyFrame *pFlyFrame = pFEShell->GetSelectedFlyFrame();
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if( pFlyFrame )
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{
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if( 0 == nSelectedChildIndex )
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{
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if(SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrame), m_rContext.IsInPagePreview()) == m_rContext.GetFrame() )
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{
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aChild = pFlyFrame;
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}
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else
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{
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const SwFrameFormat *pFrameFormat = pFlyFrame->GetFormat();
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if (pFrameFormat)
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{
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const SwFormatAnchor& rAnchor = pFrameFormat->GetAnchor();
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if( rAnchor.GetAnchorId() == RndStdIds::FLY_AS_CHAR )
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{
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const SwFrame *pParaFrame = SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrame), m_rContext.IsInPagePreview() );
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aChild = pParaFrame;
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}
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}
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}
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}
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}
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else
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{
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const size_t nSelObjs = pFEShell->IsObjSelected();
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if( 0 == nSelObjs || o3tl::make_unsigned(nSelectedChildIndex) >= nSelObjs )
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throwIndexOutOfBoundsException();
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std::list< SwAccessibleChild > aChildren;
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m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
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for( const SwAccessibleChild& rChild : aChildren )
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{
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if( rChild.GetDrawObject() && !rChild.GetSwFrame() &&
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SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview()) ==
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m_rContext.GetFrame() &&
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pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
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{
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if( 0 == nSelectedChildIndex )
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aChild = rChild;
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else
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--nSelectedChildIndex;
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}
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if (aChild.IsValid())
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break;
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}
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}
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if( !aChild.IsValid() )
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throwIndexOutOfBoundsException();
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OSL_ENSURE( m_rContext.GetMap() != nullptr, "We need the map." );
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Reference< XAccessible > xChild;
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if( aChild.GetSwFrame() )
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{
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::rtl::Reference < SwAccessibleContext > xChildImpl(
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m_rContext.GetMap()->GetContextImpl( aChild.GetSwFrame() ) );
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if( xChildImpl.is() )
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{
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xChildImpl->SetParent( &m_rContext );
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xChild = xChildImpl.get();
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}
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}
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else if ( aChild.GetDrawObject() )
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{
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::rtl::Reference < ::accessibility::AccessibleShape > xChildImpl(
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m_rContext.GetMap()->GetContextImpl( aChild.GetDrawObject(),
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&m_rContext ) );
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if( xChildImpl.is() )
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xChild = xChildImpl.get();
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}
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return xChild;
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}
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// index has to be treated as global child index.
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void SwAccessibleSelectionHelper::deselectAccessibleChild(
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sal_Int64 nChildIndex )
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{
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SolarMutexGuard g;
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if( nChildIndex < 0 ||
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nChildIndex >= m_rContext.GetChildCount( *(m_rContext.GetMap()) ) )
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throwIndexOutOfBoundsException();
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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