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, 341 insertions, 0 deletions

diff --git a/sw/source/core/access/accselectionhelper.cxx b/sw/source/core/access/accselectionhelper.cxx
new file mode 100644
index 000000000..96a622ece
--- /dev/null
+++ b/sw/source/core/access/accselectionhelper.cxx
@@ -0,0 +1,341 @@
+/* -*- 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 .
+ */
+
+#include <com/sun/star/accessibility/XAccessibleSelection.hpp>
+#include "accselectionhelper.hxx"
+
+#include "acccontext.hxx"
+#include <accmap.hxx>
+#include <o3tl/safeint.hxx>
+#include <svx/AccessibleShape.hxx>
+#include <viewsh.hxx>
+#include <fesh.hxx>
+#include <vcl/svapp.hxx>
+#include <flyfrm.hxx>
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/accessibility/AccessibleStateType.hpp>
+#include <com/sun/star/accessibility/XAccessibleStateSet.hpp>
+#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
+#include <fmtanchr.hxx>
+
+using namespace ::com::sun::star::accessibility;
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+using ::com::sun::star::accessibility::XAccessible;
+using ::com::sun::star::accessibility::XAccessibleContext;
+using ::com::sun::star::accessibility::XAccessibleSelection;
+
+using namespace ::sw::access;
+
+SwAccessibleSelectionHelper::SwAccessibleSelectionHelper(
+    SwAccessibleContext& rContext ) :
+        m_rContext( rContext )
+{
+}
+
+SwFEShell* SwAccessibleSelectionHelper::GetFEShell()
+{
+    OSL_ENSURE( m_rContext.GetMap() != nullptr, "no map?" );
+    SwViewShell* pViewShell = m_rContext.GetMap()->GetShell();
+    OSL_ENSURE( pViewShell != nullptr,
+                "No view shell? Then what are you looking at?" );
+
+    SwFEShell* pFEShell = dynamic_cast<SwFEShell*>( pViewShell );
+
+    return pFEShell;
+}
+
+void SwAccessibleSelectionHelper::throwIndexOutOfBoundsException()
+{
+    Reference < XAccessibleContext > xThis( &m_rContext );
+    Reference < XAccessibleSelection >xSelThis( xThis, UNO_QUERY );
+    lang::IndexOutOfBoundsException aExcept(
+                "index out of bounds",
+                xSelThis );
+    throw aExcept;
+}
+
+// XAccessibleSelection
+void SwAccessibleSelectionHelper::selectAccessibleChild(
+    sal_Int32 nChildIndex )
+{
+    SolarMutexGuard aGuard;
+
+    // Get the respective child as SwFrame (also do index checking), ...
+    const SwAccessibleChild aChild = m_rContext.GetChild( *(m_rContext.GetMap()),
+                                                        nChildIndex );
+    if( !aChild.IsValid() )
+        throwIndexOutOfBoundsException();
+
+    // we can only select fly frames, so we ignore (should: return
+    // false) all other attempts at child selection
+    if (GetFEShell())
+    {
+        const SdrObject *pObj = aChild.GetDrawObject();
+        if( pObj )
+            m_rContext.Select( const_cast< SdrObject *>( pObj ), nullptr==aChild.GetSwFrame());
+    }
+    // no frame shell, or no frame, or no fly frame -> can't select
+}
+
+//When the selected state of the SwFrameOrObj is set, return true.
+static bool lcl_getSelectedState(const SwAccessibleChild& aChild,
+                                     SwAccessibleContext* pContext,
+                                     SwAccessibleMap* pMap)
+{
+    Reference< XAccessible > xAcc;
+    if ( aChild.GetSwFrame() )
+    {
+        xAcc = pMap->GetContext( aChild.GetSwFrame(), false );
+    }
+    else if ( aChild.GetDrawObject() )
+    {
+        xAcc = pMap->GetContext( aChild.GetDrawObject(), pContext, false );
+    }
+
+    if( xAcc.is() )
+    {
+        Reference< XAccessibleContext > pRContext = xAcc->getAccessibleContext();
+        if(!pRContext.is())
+            return false;
+        Reference<XAccessibleStateSet> pRStateSet = pRContext->getAccessibleStateSet();
+        if( pRStateSet.is() )
+        {
+            const Sequence<short> aStates = pRStateSet->getStates();
+            if (std::find(aStates.begin(), aStates.end(), AccessibleStateType::SELECTED) != aStates.end())
+                return true;
+        }
+    }
+    return false;
+}
+
+bool SwAccessibleSelectionHelper::isAccessibleChildSelected(
+    sal_Int32 nChildIndex )
+{
+    SolarMutexGuard aGuard;
+
+    // Get the respective child as SwFrame (also do index checking), ...
+    const SwAccessibleChild aChild = m_rContext.GetChild( *(m_rContext.GetMap()),
+                                                        nChildIndex );
+    if( !aChild.IsValid() )
+        throwIndexOutOfBoundsException();
+
+    // ... and compare to the currently selected frame
+    bool bRet = false;
+    if (const SwFEShell* pFEShell = GetFEShell())
+    {
+        if ( aChild.GetSwFrame() != nullptr )
+        {
+            bRet = (pFEShell->GetSelectedFlyFrame() == aChild.GetSwFrame());
+        }
+        else if ( aChild.GetDrawObject() )
+        {
+            bRet = pFEShell->IsObjSelected( *aChild.GetDrawObject() );
+        }
+        //If the SwFrameOrObj is not selected directly in the UI, we should check whether it is selected in the selection cursor.
+        if( !bRet )
+        {
+            if( lcl_getSelectedState( aChild, &m_rContext, m_rContext.GetMap() ) )
+                bRet = true;
+        }
+    }
+
+    return bRet;
+}
+
+void SwAccessibleSelectionHelper::selectAllAccessibleChildren(  )
+{
+    SolarMutexGuard aGuard;
+
+    // We can select only one. So iterate over the children to find
+    // the first we can select, and select it.
+
+    SwFEShell* pFEShell = GetFEShell();
+    if (!pFEShell)
+        return;
+
+    std::list< SwAccessibleChild > aChildren;
+    m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
+
+    for( const SwAccessibleChild& rChild : aChildren )
+    {
+        const SdrObject* pObj = rChild.GetDrawObject();
+        const SwFrame* pFrame = rChild.GetSwFrame();
+        if( pObj && !(pFrame != nullptr && pFEShell->IsObjSelected()) )
+        {
+            m_rContext.Select( const_cast< SdrObject *>( pObj ), nullptr==pFrame );
+            if( pFrame )
+                break;
+        }
+    }
+}
+
+sal_Int32 SwAccessibleSelectionHelper::getSelectedAccessibleChildCount(  )
+{
+    SolarMutexGuard aGuard;
+
+    sal_Int32 nCount = 0;
+    // Only one frame can be selected at a time, and we only frames
+    // for selectable children.
+    if (const SwFEShell* pFEShell = GetFEShell())
+    {
+        const SwFlyFrame* pFlyFrame = pFEShell->GetSelectedFlyFrame();
+        if( pFlyFrame )
+        {
+            nCount = 1;
+        }
+        else
+        {
+            const size_t nSelObjs = pFEShell->IsObjSelected();
+            if( nSelObjs > 0 )
+            {
+                std::list< SwAccessibleChild > aChildren;
+                m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
+
+                for( const SwAccessibleChild& rChild : aChildren )
+                {
+                    if( rChild.GetDrawObject() && !rChild.GetSwFrame() &&
+                        SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview())
+                           == m_rContext.GetFrame() &&
+                        pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
+                    {
+                        nCount++;
+                    }
+                    if (o3tl::make_unsigned(nCount) >= nSelObjs)
+                        break;
+                }
+            }
+        }
+        //If the SwFrameOrObj is not selected directly in the UI,
+        //we should check whether it is selected in the selection cursor.
+        if( nCount == 0 )
+        {
+            std::list< SwAccessibleChild > aChildren;
+            m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
+            nCount = static_cast<sal_Int32>(std::count_if(aChildren.begin(), aChildren.end(),
+                [this](const SwAccessibleChild& aChild) { return lcl_getSelectedState(aChild, &m_rContext, m_rContext.GetMap()); }));
+        }
+    }
+    return nCount;
+}
+
+Reference<XAccessible> SwAccessibleSelectionHelper::getSelectedAccessibleChild(
+    sal_Int32 nSelectedChildIndex )
+{
+    SolarMutexGuard aGuard;
+
+    // Since the index is relative to the selected children, and since
+    // there can be at most one selected frame child, the index must
+    // be 0, and a selection must exist, otherwise we have to throw an
+    // lang::IndexOutOfBoundsException
+    SwFEShell* pFEShell = GetFEShell();
+    if (!pFEShell)
+        throwIndexOutOfBoundsException();
+
+    SwAccessibleChild aChild;
+    const SwFlyFrame *pFlyFrame = pFEShell->GetSelectedFlyFrame();
+    if( pFlyFrame )
+    {
+        if( 0 == nSelectedChildIndex )
+        {
+            if(SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrame), m_rContext.IsInPagePreview()) == m_rContext.GetFrame() )
+            {
+                aChild = pFlyFrame;
+            }
+            else
+            {
+                const SwFrameFormat *pFrameFormat = pFlyFrame->GetFormat();
+                if (pFrameFormat)
+                {
+                    const SwFormatAnchor& rAnchor = pFrameFormat->GetAnchor();
+                    if( rAnchor.GetAnchorId() == RndStdIds::FLY_AS_CHAR )
+                    {
+                        const SwFrame *pParaFrame = SwAccessibleFrame::GetParent( SwAccessibleChild(pFlyFrame), m_rContext.IsInPagePreview() );
+                        aChild = pParaFrame;
+                    }
+                }
+            }
+        }
+    }
+    else
+    {
+        const size_t nSelObjs = pFEShell->IsObjSelected();
+        if( 0 == nSelObjs || o3tl::make_unsigned(nSelectedChildIndex) >= nSelObjs )
+            throwIndexOutOfBoundsException();
+
+        std::list< SwAccessibleChild > aChildren;
+        m_rContext.GetChildren( *(m_rContext.GetMap()), aChildren );
+
+        for( const SwAccessibleChild& rChild : aChildren )
+        {
+            if( rChild.GetDrawObject() && !rChild.GetSwFrame() &&
+                SwAccessibleFrame::GetParent(rChild, m_rContext.IsInPagePreview()) ==
+                    m_rContext.GetFrame() &&
+                pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
+            {
+                if( 0 == nSelectedChildIndex )
+                    aChild = rChild;
+                else
+                    --nSelectedChildIndex;
+            }
+            if (aChild.IsValid())
+                break;
+        }
+    }
+
+    if( !aChild.IsValid() )
+        throwIndexOutOfBoundsException();
+
+    OSL_ENSURE( m_rContext.GetMap() != nullptr, "We need the map." );
+    Reference< XAccessible > xChild;
+    if( aChild.GetSwFrame() )
+    {
+        ::rtl::Reference < SwAccessibleContext > xChildImpl(
+                m_rContext.GetMap()->GetContextImpl( aChild.GetSwFrame() ) );
+        if( xChildImpl.is() )
+        {
+            xChildImpl->SetParent( &m_rContext );
+            xChild = xChildImpl.get();
+        }
+    }
+    else if ( aChild.GetDrawObject() )
+    {
+        ::rtl::Reference < ::accessibility::AccessibleShape > xChildImpl(
+                m_rContext.GetMap()->GetContextImpl( aChild.GetDrawObject(),
+                                          &m_rContext )  );
+        if( xChildImpl.is() )
+            xChild = xChildImpl.get();
+    }
+    return xChild;
+}
+
+// index has to be treated as global child index.
+void SwAccessibleSelectionHelper::deselectAccessibleChild(
+    sal_Int32 nChildIndex )
+{
+    SolarMutexGuard g;
+
+    if( nChildIndex < 0 ||
+        nChildIndex >= m_rContext.GetChildCount( *(m_rContext.GetMap()) ) )
+        throwIndexOutOfBoundsException();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */