f063aac514
All current callers check the index before calling `AccessibleParaManager::IsReferencable`. Change-Id: If585e11eba3c48037b65439e8b95cb8d27bd4ffe Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166465 Reviewed-by: Michael Weghorn <m.weghorn@posteo.de> Tested-by: Jenkins
404 lines
13 KiB
C++
404 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 <cassert>
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// Global header
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#include <com/sun/star/uno/Any.hxx>
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#include <com/sun/star/uno/Reference.hxx>
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#include <o3tl/safeint.hxx>
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#include <sal/log.hxx>
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#include <tools/debug.hxx>
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#include <com/sun/star/accessibility/XAccessible.hpp>
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#include <com/sun/star/accessibility/AccessibleStateType.hpp>
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// Project-local header
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#include <editeng/AccessibleParaManager.hxx>
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#include <editeng/AccessibleEditableTextPara.hxx>
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using namespace ::com::sun::star;
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using namespace ::com::sun::star::accessibility;
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namespace accessibility
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{
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AccessibleParaManager::AccessibleParaManager() :
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maChildren(1),
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mnChildStates( 0 ),
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maEEOffset( 0, 0 ),
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mnFocusedChild( -1 ),
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mbActive( false )
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{
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}
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AccessibleParaManager::~AccessibleParaManager()
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{
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// owner is responsible for possible child death
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}
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void AccessibleParaManager::SetAdditionalChildStates( sal_Int64 nChildStates )
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{
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mnChildStates = nChildStates;
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}
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void AccessibleParaManager::SetNum( sal_Int32 nNumParas )
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{
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if( o3tl::make_unsigned(nNumParas) < maChildren.size() )
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Release( nNumParas, maChildren.size() );
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maChildren.resize( nNumParas );
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if( mnFocusedChild >= nNumParas )
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mnFocusedChild = -1;
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}
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sal_Int32 AccessibleParaManager::GetNum() const
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{
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size_t nSize = maChildren.size();
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if (nSize > SAL_MAX_INT32)
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{
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SAL_WARN( "editeng", "AccessibleParaManager::GetNum - overflow " << nSize);
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return SAL_MAX_INT32;
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}
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return static_cast<sal_Int32>(nSize);
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}
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AccessibleParaManager::VectorOfChildren::iterator AccessibleParaManager::begin()
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{
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return maChildren.begin();
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}
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AccessibleParaManager::VectorOfChildren::iterator AccessibleParaManager::end()
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{
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return maChildren.end();
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}
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void AccessibleParaManager::FireEvent( sal_Int32 nPara,
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const sal_Int16 nEventId ) const
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{
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DBG_ASSERT( 0 <= nPara && maChildren.size() > o3tl::make_unsigned(nPara),
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"AccessibleParaManager::FireEvent: invalid index" );
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if( 0 <= nPara && maChildren.size() > o3tl::make_unsigned(nPara) )
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{
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auto aChild( GetChild( nPara ).first.get() );
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if( aChild.is() )
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aChild->FireEvent( nEventId );
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}
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}
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bool AccessibleParaManager::IsReferencable(
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rtl::Reference<AccessibleEditableTextPara> const & aChild)
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{
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return aChild.is();
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}
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bool AccessibleParaManager::IsReferencable( sal_Int32 nChild ) const
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{
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assert(0 <= nChild && maChildren.size() > o3tl::make_unsigned(nChild)
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&& "AccessibleParaManager::IsReferencable: invalid index");
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if( 0 <= nChild && maChildren.size() > o3tl::make_unsigned(nChild) )
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{
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// retrieve hard reference from weak one
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return IsReferencable( GetChild( nChild ).first.get() );
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}
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else
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{
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return false;
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}
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}
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AccessibleParaManager::WeakChild AccessibleParaManager::GetChild( sal_Int32 nParagraphIndex ) const
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{
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DBG_ASSERT( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex),
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"AccessibleParaManager::GetChild: invalid index" );
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if( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex) )
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{
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return maChildren[ nParagraphIndex ];
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}
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else
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{
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return WeakChild();
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}
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}
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bool AccessibleParaManager::HasCreatedChild( sal_Int32 nParagraphIndex ) const
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{
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if( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex) )
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{
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auto const & rChild = maChildren[ nParagraphIndex ];
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return rChild.second.Width != 0 || rChild.second.Height != 0;
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}
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else
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return false;
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}
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AccessibleParaManager::Child AccessibleParaManager::CreateChild( sal_Int32 nChild,
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const uno::Reference< XAccessible >& xFrontEnd,
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SvxEditSourceAdapter& rEditSource,
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sal_Int32 nParagraphIndex )
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{
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DBG_ASSERT( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex),
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"AccessibleParaManager::CreateChild: invalid index" );
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if( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex) )
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{
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// retrieve hard reference from weak one
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auto aChild( GetChild( nParagraphIndex ).first.get() );
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if( !IsReferencable( nParagraphIndex ) )
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{
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// there is no hard reference available, create object then
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// #i27138#
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aChild = new AccessibleEditableTextPara(xFrontEnd, this);
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InitChild( *aChild, rEditSource, nChild, nParagraphIndex );
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maChildren[ nParagraphIndex ] = WeakChild( aChild, aChild->getBounds() );
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}
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return Child( aChild.get(), GetChild( nParagraphIndex ).second );
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}
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else
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{
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return Child();
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}
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}
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void AccessibleParaManager::SetEEOffset( const Point& rOffset )
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{
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maEEOffset = rOffset;
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MemFunAdapter< const Point& > aAdapter( &::accessibility::AccessibleEditableTextPara::SetEEOffset, rOffset );
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std::for_each( begin(), end(), aAdapter );
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}
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void AccessibleParaManager::SetActive( bool bActive )
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{
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mbActive = bActive;
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if( bActive )
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{
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SetState( AccessibleStateType::ACTIVE );
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SetState( AccessibleStateType::EDITABLE );
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}
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else
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{
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UnSetState( AccessibleStateType::ACTIVE );
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UnSetState( AccessibleStateType::EDITABLE );
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}
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}
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void AccessibleParaManager::SetFocus( sal_Int32 nChild )
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{
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if( mnFocusedChild != -1 )
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UnSetState( mnFocusedChild, AccessibleStateType::FOCUSED );
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mnFocusedChild = nChild;
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if( mnFocusedChild != -1 )
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SetState( mnFocusedChild, AccessibleStateType::FOCUSED );
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}
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void AccessibleParaManager::InitChild( AccessibleEditableTextPara& rChild,
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SvxEditSourceAdapter& rEditSource,
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sal_Int32 nChild,
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sal_Int32 nParagraphIndex ) const
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{
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rChild.SetEditSource( &rEditSource );
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rChild.SetIndexInParent( nChild );
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rChild.SetParagraphIndex( nParagraphIndex );
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rChild.SetEEOffset( maEEOffset );
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if( mbActive )
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{
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rChild.SetState( AccessibleStateType::ACTIVE );
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rChild.SetState( AccessibleStateType::EDITABLE );
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}
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if( mnFocusedChild == nParagraphIndex )
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rChild.SetState( AccessibleStateType::FOCUSED );
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// add states passed from outside
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for (int i=0; i<63; i++)
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{
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sal_Int64 nState = sal_Int64(1) << i;
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if ( nState & mnChildStates )
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rChild.SetState( nState );
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}
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}
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void AccessibleParaManager::SetState( sal_Int32 nChild, const sal_Int64 nStateId )
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{
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MemFunAdapter< const sal_Int64 > aFunc( &AccessibleEditableTextPara::SetState,
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nStateId );
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aFunc( GetChild(nChild) );
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}
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void AccessibleParaManager::SetState( const sal_Int64 nStateId )
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{
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std::for_each( begin(), end(),
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MemFunAdapter< const sal_Int64 >( &AccessibleEditableTextPara::SetState,
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nStateId ) );
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}
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void AccessibleParaManager::UnSetState( sal_Int32 nChild, const sal_Int64 nStateId )
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{
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MemFunAdapter< const sal_Int64 > aFunc( &AccessibleEditableTextPara::UnSetState,
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nStateId );
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aFunc( GetChild(nChild) );
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}
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void AccessibleParaManager::UnSetState( const sal_Int64 nStateId )
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{
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std::for_each( begin(), end(),
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MemFunAdapter< const sal_Int64 >( &AccessibleEditableTextPara::UnSetState,
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nStateId ) );
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}
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namespace {
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// not generic yet, no arguments...
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class AccessibleParaManager_DisposeChildren
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{
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public:
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AccessibleParaManager_DisposeChildren() {}
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void operator()( ::accessibility::AccessibleEditableTextPara& rPara )
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{
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rPara.Dispose();
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}
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};
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}
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void AccessibleParaManager::Dispose()
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{
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AccessibleParaManager_DisposeChildren aFunctor;
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std::for_each( begin(), end(),
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WeakChildAdapter< AccessibleParaManager_DisposeChildren > (aFunctor) );
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}
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namespace {
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// not generic yet, too many method arguments...
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class StateChangeEvent
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{
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public:
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StateChangeEvent( const sal_Int16 nEventId,
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const uno::Any& rNewValue,
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const uno::Any& rOldValue ) :
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mnEventId( nEventId ),
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mrNewValue( rNewValue ),
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mrOldValue( rOldValue ) {}
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void operator()( ::accessibility::AccessibleEditableTextPara const & rPara )
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{
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rPara.FireEvent( mnEventId, mrNewValue, mrOldValue );
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}
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private:
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const sal_Int16 mnEventId;
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const uno::Any& mrNewValue;
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const uno::Any& mrOldValue;
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};
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}
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void AccessibleParaManager::FireEvent( sal_Int32 nStartPara,
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sal_Int32 nEndPara,
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const sal_Int16 nEventId,
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const uno::Any& rNewValue,
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const uno::Any& rOldValue ) const
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{
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DBG_ASSERT( 0 <= nStartPara && 0 <= nEndPara &&
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maChildren.size() > o3tl::make_unsigned(nStartPara) &&
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maChildren.size() >= o3tl::make_unsigned(nEndPara) &&
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nEndPara >= nStartPara, "AccessibleParaManager::FireEvent: invalid index" );
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if( 0 <= nStartPara && 0 <= nEndPara &&
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maChildren.size() > o3tl::make_unsigned(nStartPara) &&
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maChildren.size() >= o3tl::make_unsigned(nEndPara) &&
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nEndPara >= nStartPara )
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{
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VectorOfChildren::const_iterator front = maChildren.begin();
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VectorOfChildren::const_iterator back = front;
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std::advance( front, nStartPara );
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std::advance( back, nEndPara );
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StateChangeEvent aFunctor( nEventId, rNewValue, rOldValue );
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std::for_each( front, back, AccessibleParaManager::WeakChildAdapter< StateChangeEvent >( aFunctor ) );
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}
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}
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namespace {
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class ReleaseChild
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{
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public:
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AccessibleParaManager::WeakChild operator()( const AccessibleParaManager::WeakChild& rPara )
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{
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AccessibleParaManager::ShutdownPara( rPara );
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// clear reference
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return AccessibleParaManager::WeakChild();
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}
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};
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}
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void AccessibleParaManager::Release( sal_Int32 nStartPara, sal_Int32 nEndPara )
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{
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DBG_ASSERT( 0 <= nStartPara && 0 <= nEndPara &&
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maChildren.size() > o3tl::make_unsigned(nStartPara) &&
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maChildren.size() >= o3tl::make_unsigned(nEndPara),
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"AccessibleParaManager::Release: invalid index" );
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if( 0 <= nStartPara && 0 <= nEndPara &&
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maChildren.size() > o3tl::make_unsigned(nStartPara) &&
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maChildren.size() >= o3tl::make_unsigned(nEndPara) )
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{
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VectorOfChildren::iterator front = maChildren.begin();
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VectorOfChildren::iterator back = front;
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std::advance( front, nStartPara );
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std::advance( back, nEndPara );
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std::transform( front, back, front, ReleaseChild() );
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}
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}
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void AccessibleParaManager::ShutdownPara( const WeakChild& rChild )
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{
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auto aChild( rChild.first.get() );
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if( IsReferencable( aChild ) )
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aChild->SetEditSource( nullptr );
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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