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

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

1 files changed, 403 insertions, 0 deletions

diff --git a/editeng/source/accessibility/AccessibleParaManager.cxx b/editeng/source/accessibility/AccessibleParaManager.cxx
new file mode 100644
index 000000000..f597bba6a
--- /dev/null
+++ b/editeng/source/accessibility/AccessibleParaManager.cxx
@@ -0,0 +1,403 @@
+/* -*- 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: */