386 lines
13 KiB
C++
386 lines
13 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 <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/accessibility/XAccessibleStateSet.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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SwAccessibleSelectionHelper::~SwAccessibleSelectionHelper()
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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() != NULL, "no map?" );
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SwViewShell* pViewShell = m_rContext.GetMap()->GetShell();
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OSL_ENSURE( pViewShell != NULL,
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"No view shell? Then what are you looking at?" );
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SwFEShell* pFEShell = NULL;
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if( pViewShell->ISA( SwFEShell ) )
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{
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pFEShell = static_cast<SwFEShell*>( pViewShell );
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}
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return pFEShell;
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}
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void SwAccessibleSelectionHelper::throwIndexOutOfBoundsException()
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throw ( lang::IndexOutOfBoundsException )
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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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OUString( "index out of bounds" ),
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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_Int32 nChildIndex )
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throw ( lang::IndexOutOfBoundsException,
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RuntimeException )
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{
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SolarMutexGuard aGuard;
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// Get the respective child as SwFrm (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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SwFEShell* pFEShell = GetFEShell();
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if( pFEShell != NULL )
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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 ), 0==aChild.GetSwFrm());
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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 SwFrmOrObj is setted, 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.GetSwFrm() )
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{
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xAcc = pMap->GetContext( aChild.GetSwFrm(), 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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Reference<XAccessibleStateSet> pRStateSet = pRContext->getAccessibleStateSet();
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if( pRStateSet.is() )
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{
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Sequence<short> pStates = pRStateSet->getStates();
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sal_Int32 count = pStates.getLength();
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for( sal_Int32 i = 0; i < count; i++ )
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{
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if( pStates[i] == AccessibleStateType::SELECTED)
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return true;
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}
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}
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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_Int32 nChildIndex )
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throw ( lang::IndexOutOfBoundsException,
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RuntimeException )
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{
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SolarMutexGuard aGuard;
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// Get the respective child as SwFrm (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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SwFEShell* pFEShell = GetFEShell();
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if( pFEShell )
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{
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if ( aChild.GetSwFrm() != 0 )
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{
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bRet = (pFEShell->GetCurrFlyFrm() == aChild.GetSwFrm());
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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 SwFrmOrObj 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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throw ( RuntimeException )
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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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{
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::std::list< SwAccessibleChild > aChildren;
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m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
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::std::list< SwAccessibleChild >::const_iterator aIter = aChildren.begin();
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::std::list< SwAccessibleChild >::const_iterator aEndIter = aChildren.end();
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while( aIter != aEndIter )
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{
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const SwAccessibleChild& rChild = *aIter;
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const SdrObject* pObj = rChild.GetDrawObject();
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const SwFrm* pFrm = rChild.GetSwFrm();
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if( pObj && !(pFrm != 0 && pFEShell->IsObjSelected()) )
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{
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m_rContext.Select( const_cast< SdrObject *>( pObj ), 0==pFrm );
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if( pFrm )
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break;
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}
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++aIter;
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}
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}
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}
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sal_Int32 SwAccessibleSelectionHelper::getSelectedAccessibleChildCount( )
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throw ( RuntimeException )
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{
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SolarMutexGuard aGuard;
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sal_Int32 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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SwFEShell* pFEShell = GetFEShell();
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if( pFEShell != 0 )
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{
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const SwFlyFrm* pFlyFrm = pFEShell->GetCurrFlyFrm();
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if( pFlyFrm )
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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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::std::list< SwAccessibleChild >::const_iterator aIter =
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aChildren.begin();
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::std::list< SwAccessibleChild >::const_iterator aEndIter =
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aChildren.end();
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while( aIter != aEndIter && static_cast<size_t>(nCount) < nSelObjs )
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{
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const SwAccessibleChild& rChild = *aIter;
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if( rChild.GetDrawObject() && !rChild.GetSwFrm() &&
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SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview())
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== m_rContext.GetFrm() &&
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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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++aIter;
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}
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}
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}
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//If the SwFrmOrObj 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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::std::list< SwAccessibleChild >::const_iterator aIter =
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aChildren.begin();
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::std::list< SwAccessibleChild >::const_iterator aEndIter =
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aChildren.end();
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while( aIter != aEndIter )
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{
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const SwAccessibleChild& aChild = *aIter;
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if( lcl_getSelectedState( aChild, &m_rContext, m_rContext.GetMap() ) )
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nCount++;
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++aIter;
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}
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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_Int32 nSelectedChildIndex )
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throw ( lang::IndexOutOfBoundsException,
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RuntimeException)
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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( 0 == pFEShell )
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throwIndexOutOfBoundsException();
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SwAccessibleChild aChild;
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const SwFlyFrm *pFlyFrm = pFEShell->GetCurrFlyFrm();
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if( pFlyFrm )
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{
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if( 0 == nSelectedChildIndex )
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{
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if(SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrm), m_rContext.IsInPagePreview()) == m_rContext.GetFrm() )
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{
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aChild = pFlyFrm;
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}
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else
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{
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const SwFrameFormat *pFrameFormat = pFlyFrm->GetFormat();
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if (pFrameFormat)
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{
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const SwFormatAnchor& pAnchor = pFrameFormat->GetAnchor();
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if( pAnchor.GetAnchorId() == FLY_AS_CHAR )
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{
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const SwFrm *pParaFrm = SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrm), m_rContext.IsInPagePreview() );
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aChild = pParaFrm;
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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 || static_cast<size_t>(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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::std::list< SwAccessibleChild >::const_iterator aIter = aChildren.begin();
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::std::list< SwAccessibleChild >::const_iterator aEndIter = aChildren.end();
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while( aIter != aEndIter && !aChild.IsValid() )
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{
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const SwAccessibleChild& rChild = *aIter;
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if( rChild.GetDrawObject() && !rChild.GetSwFrm() &&
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SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview()) ==
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m_rContext.GetFrm() &&
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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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++aIter;
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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() != NULL, "We need the map." );
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Reference< XAccessible > xChild;
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if( aChild.GetSwFrm() )
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{
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::rtl::Reference < SwAccessibleContext > xChildImpl(
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m_rContext.GetMap()->GetContextImpl( aChild.GetSwFrm(),
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true ) );
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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, true ) );
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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_Int32 nChildIndex )
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throw ( lang::IndexOutOfBoundsException,
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RuntimeException )
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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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