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+/* -*- 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 .
+ */
+
+
+// Global header
+
+
+#include <com/sun/star/uno/Any.hxx>
+#include <com/sun/star/uno/Reference.hxx>
+#include <o3tl/safeint.hxx>
+#include <sal/log.hxx>
+#include <tools/debug.hxx>
+#include <com/sun/star/accessibility/XAccessible.hpp>
+#include <com/sun/star/accessibility/AccessibleStateType.hpp>
+
+
+// Project-local header
+
+
+#include <editeng/AccessibleParaManager.hxx>
+#include <editeng/AccessibleEditableTextPara.hxx>
+
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::accessibility;
+
+
+namespace accessibility
+{
+ AccessibleParaManager::AccessibleParaManager() :
+ maChildren(1),
+ maEEOffset( 0, 0 ),
+ mnFocusedChild( -1 ),
+ mbActive( false )
+ {
+ }
+
+ AccessibleParaManager::~AccessibleParaManager()
+ {
+ // owner is responsible for possible child death
+ }
+
+ void AccessibleParaManager::SetAdditionalChildStates( VectorOfStates&& rChildStates )
+ {
+ maChildStates = std::move(rChildStates);
+ }
+
+ void AccessibleParaManager::SetNum( sal_Int32 nNumParas )
+ {
+ if( o3tl::make_unsigned(nNumParas) < maChildren.size() )
+ Release( nNumParas, maChildren.size() );
+
+ maChildren.resize( nNumParas );
+
+ if( mnFocusedChild >= nNumParas )
+ mnFocusedChild = -1;
+ }
+
+ sal_Int32 AccessibleParaManager::GetNum() const
+ {
+ size_t nSize = maChildren.size();
+ if (nSize > SAL_MAX_INT32)
+ {
+ SAL_WARN( "editeng", "AccessibleParaManager::GetNum - overflow " << nSize);
+ return SAL_MAX_INT32;
+ }
+ return static_cast<sal_Int32>(nSize);
+ }
+
+ AccessibleParaManager::VectorOfChildren::iterator AccessibleParaManager::begin()
+ {
+ return maChildren.begin();
+ }
+
+ AccessibleParaManager::VectorOfChildren::iterator AccessibleParaManager::end()
+ {
+ return maChildren.end();
+ }
+
+ void AccessibleParaManager::FireEvent( sal_Int32 nPara,
+ const sal_Int16 nEventId ) const
+ {
+ DBG_ASSERT( 0 <= nPara && maChildren.size() > o3tl::make_unsigned(nPara),
+ "AccessibleParaManager::FireEvent: invalid index" );
+
+ if( 0 <= nPara && maChildren.size() > o3tl::make_unsigned(nPara) )
+ {
+ auto aChild( GetChild( nPara ).first.get() );
+ if( aChild.is() )
+ aChild->FireEvent( nEventId );
+ }
+ }
+
+ bool AccessibleParaManager::IsReferencable(
+ rtl::Reference<AccessibleEditableTextPara> const & aChild)
+ {
+ return aChild.is();
+ }
+
+ bool AccessibleParaManager::IsReferencable( sal_Int32 nChild ) const
+ {
+ DBG_ASSERT( 0 <= nChild && maChildren.size() > o3tl::make_unsigned(nChild),
+ "AccessibleParaManager::IsReferencable: invalid index" );
+
+ if( 0 <= nChild && maChildren.size() > o3tl::make_unsigned(nChild) )
+ {
+ // retrieve hard reference from weak one
+ return IsReferencable( GetChild( nChild ).first.get() );
+ }
+ else
+ {
+ return false;
+ }
+ }
+
+ AccessibleParaManager::WeakChild AccessibleParaManager::GetChild( sal_Int32 nParagraphIndex ) const
+ {
+ DBG_ASSERT( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex),
+ "AccessibleParaManager::GetChild: invalid index" );
+
+ if( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex) )
+ {
+ return maChildren[ nParagraphIndex ];
+ }
+ else
+ {
+ return WeakChild();
+ }
+ }
+
+ bool AccessibleParaManager::HasCreatedChild( sal_Int32 nParagraphIndex ) const
+ {
+ if( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex) )
+ {
+ auto const & rChild = maChildren[ nParagraphIndex ];
+ return rChild.second.Width != 0 || rChild.second.Height != 0;
+ }
+ else
+ return false;
+ }
+
+ AccessibleParaManager::Child AccessibleParaManager::CreateChild( sal_Int32 nChild,
+ const uno::Reference< XAccessible >& xFrontEnd,
+ SvxEditSourceAdapter& rEditSource,
+ sal_Int32 nParagraphIndex )
+ {
+ DBG_ASSERT( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex),
+ "AccessibleParaManager::CreateChild: invalid index" );
+
+ if( 0 <= nParagraphIndex && maChildren.size() > o3tl::make_unsigned(nParagraphIndex) )
+ {
+ // retrieve hard reference from weak one
+ auto aChild( GetChild( nParagraphIndex ).first.get() );
+
+ if( !IsReferencable( nParagraphIndex ) )
+ {
+ // there is no hard reference available, create object then
+ // #i27138#
+ aChild = new AccessibleEditableTextPara(xFrontEnd, this);
+
+ InitChild( *aChild, rEditSource, nChild, nParagraphIndex );
+
+ maChildren[ nParagraphIndex ] = WeakChild( aChild, aChild->getBounds() );
+ }
+
+ return Child( aChild.get(), GetChild( nParagraphIndex ).second );
+ }
+ else
+ {
+ return Child();
+ }
+ }
+
+ void AccessibleParaManager::SetEEOffset( const Point& rOffset )
+ {
+ maEEOffset = rOffset;
+
+ MemFunAdapter< const Point& > aAdapter( &::accessibility::AccessibleEditableTextPara::SetEEOffset, rOffset );
+ std::for_each( begin(), end(), aAdapter );
+ }
+
+ void AccessibleParaManager::SetActive( bool bActive )
+ {
+ mbActive = bActive;
+
+ if( bActive )
+ {
+ SetState( AccessibleStateType::ACTIVE );
+ SetState( AccessibleStateType::EDITABLE );
+ }
+ else
+ {
+ UnSetState( AccessibleStateType::ACTIVE );
+ UnSetState( AccessibleStateType::EDITABLE );
+ }
+ }
+
+ void AccessibleParaManager::SetFocus( sal_Int32 nChild )
+ {
+ if( mnFocusedChild != -1 )
+ UnSetState( mnFocusedChild, AccessibleStateType::FOCUSED );
+
+ mnFocusedChild = nChild;
+
+ if( mnFocusedChild != -1 )
+ SetState( mnFocusedChild, AccessibleStateType::FOCUSED );
+ }
+
+ void AccessibleParaManager::InitChild( AccessibleEditableTextPara& rChild,
+ SvxEditSourceAdapter& rEditSource,
+ sal_Int32 nChild,
+ sal_Int32 nParagraphIndex ) const
+ {
+ rChild.SetEditSource( &rEditSource );
+ rChild.SetIndexInParent( nChild );
+ rChild.SetParagraphIndex( nParagraphIndex );
+
+ rChild.SetEEOffset( maEEOffset );
+
+ if( mbActive )
+ {
+ rChild.SetState( AccessibleStateType::ACTIVE );
+ rChild.SetState( AccessibleStateType::EDITABLE );
+ }
+
+ if( mnFocusedChild == nParagraphIndex )
+ rChild.SetState( AccessibleStateType::FOCUSED );
+
+ // add states passed from outside
+ for( const auto& rState : maChildStates )
+ rChild.SetState( rState );
+ }
+
+ void AccessibleParaManager::SetState( sal_Int32 nChild, const sal_Int16 nStateId )
+ {
+ MemFunAdapter< const sal_Int16 > aFunc( &AccessibleEditableTextPara::SetState,
+ nStateId );
+ aFunc( GetChild(nChild) );
+ }
+
+ void AccessibleParaManager::SetState( const sal_Int16 nStateId )
+ {
+ std::for_each( begin(), end(),
+ MemFunAdapter< const sal_Int16 >( &AccessibleEditableTextPara::SetState,
+ nStateId ) );
+ }
+
+ void AccessibleParaManager::UnSetState( sal_Int32 nChild, const sal_Int16 nStateId )
+ {
+ MemFunAdapter< const sal_Int16 > aFunc( &AccessibleEditableTextPara::UnSetState,
+ nStateId );
+ aFunc( GetChild(nChild) );
+ }
+
+ void AccessibleParaManager::UnSetState( const sal_Int16 nStateId )
+ {
+ std::for_each( begin(), end(),
+ MemFunAdapter< const sal_Int16 >( &AccessibleEditableTextPara::UnSetState,
+ nStateId ) );
+ }
+
+ namespace {
+
+ // not generic yet, no arguments...
+ class AccessibleParaManager_DisposeChildren
+ {
+ public:
+ AccessibleParaManager_DisposeChildren() {}
+ void operator()( ::accessibility::AccessibleEditableTextPara& rPara )
+ {
+ rPara.Dispose();
+ }
+ };
+
+ }
+
+ void AccessibleParaManager::Dispose()
+ {
+ AccessibleParaManager_DisposeChildren aFunctor;
+
+ std::for_each( begin(), end(),
+ WeakChildAdapter< AccessibleParaManager_DisposeChildren > (aFunctor) );
+ }
+
+ namespace {
+
+ // not generic yet, too many method arguments...
+ class StateChangeEvent
+ {
+ public:
+ StateChangeEvent( const sal_Int16 nEventId,
+ const uno::Any& rNewValue,
+ const uno::Any& rOldValue ) :
+ mnEventId( nEventId ),
+ mrNewValue( rNewValue ),
+ mrOldValue( rOldValue ) {}
+ void operator()( ::accessibility::AccessibleEditableTextPara const & rPara )
+ {
+ rPara.FireEvent( mnEventId, mrNewValue, mrOldValue );
+ }
+
+ private:
+ const sal_Int16 mnEventId;
+ const uno::Any& mrNewValue;
+ const uno::Any& mrOldValue;
+ };
+
+ }
+
+ void AccessibleParaManager::FireEvent( sal_Int32 nStartPara,
+ sal_Int32 nEndPara,
+ const sal_Int16 nEventId,
+ const uno::Any& rNewValue,
+ const uno::Any& rOldValue ) const
+ {
+ DBG_ASSERT( 0 <= nStartPara && 0 <= nEndPara &&
+ maChildren.size() > o3tl::make_unsigned(nStartPara) &&
+ maChildren.size() >= o3tl::make_unsigned(nEndPara) &&
+ nEndPara >= nStartPara, "AccessibleParaManager::FireEvent: invalid index" );
+
+
+ if( 0 <= nStartPara && 0 <= nEndPara &&
+ maChildren.size() > o3tl::make_unsigned(nStartPara) &&
+ maChildren.size() >= o3tl::make_unsigned(nEndPara) &&
+ nEndPara >= nStartPara )
+ {
+ VectorOfChildren::const_iterator front = maChildren.begin();
+ VectorOfChildren::const_iterator back = front;
+
+ std::advance( front, nStartPara );
+ std::advance( back, nEndPara );
+
+ StateChangeEvent aFunctor( nEventId, rNewValue, rOldValue );
+
+ std::for_each( front, back, AccessibleParaManager::WeakChildAdapter< StateChangeEvent >( aFunctor ) );
+ }
+ }
+
+ namespace {
+
+ class ReleaseChild
+ {
+ public:
+ AccessibleParaManager::WeakChild operator()( const AccessibleParaManager::WeakChild& rPara )
+ {
+ AccessibleParaManager::ShutdownPara( rPara );
+
+ // clear reference
+ return AccessibleParaManager::WeakChild();
+ }
+ };
+
+ }
+
+ void AccessibleParaManager::Release( sal_Int32 nStartPara, sal_Int32 nEndPara )
+ {
+ DBG_ASSERT( 0 <= nStartPara && 0 <= nEndPara &&
+ maChildren.size() > o3tl::make_unsigned(nStartPara) &&
+ maChildren.size() >= o3tl::make_unsigned(nEndPara),
+ "AccessibleParaManager::Release: invalid index" );
+
+ if( 0 <= nStartPara && 0 <= nEndPara &&
+ maChildren.size() > o3tl::make_unsigned(nStartPara) &&
+ maChildren.size() >= o3tl::make_unsigned(nEndPara) )
+ {
+ VectorOfChildren::iterator front = maChildren.begin();
+ VectorOfChildren::iterator back = front;
+
+ std::advance( front, nStartPara );
+ std::advance( back, nEndPara );
+
+ std::transform( front, back, front, ReleaseChild() );
+ }
+ }
+
+ void AccessibleParaManager::ShutdownPara( const WeakChild& rChild )
+ {
+ auto aChild( rChild.first.get() );
+
+ if( IsReferencable( aChild ) )
+ aChild->SetEditSource( nullptr );
+ }
+
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */