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, 237 insertions, 0 deletions

diff --git a/winaccessibility/source/service/AccDescendantManagerEventListener.cxx b/winaccessibility/source/service/AccDescendantManagerEventListener.cxx
new file mode 100644
index 000000000..c38f19e32
--- /dev/null
+++ b/winaccessibility/source/service/AccDescendantManagerEventListener.cxx
@@ -0,0 +1,237 @@
+/* -*- 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/XAccessible.hpp>
+#include <com/sun/star/accessibility/AccessibleStateType.hpp>
+#include <com/sun/star/accessibility/AccessibleEventId.hpp>
+#include <com/sun/star/accessibility/AccessibleRole.hpp>
+#include <com/sun/star/accessibility/XAccessibleEventBroadcaster.hpp>
+
+#include <vcl/svapp.hxx>
+
+#include <AccDescendantManagerEventListener.hxx>
+#include <AccObjectManagerAgent.hxx>
+#include <unomsaaevent.hxx>
+
+using namespace com::sun::star::uno;
+using namespace com::sun::star::accessibility;
+
+AccDescendantManagerEventListener::AccDescendantManagerEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
+    :   AccComponentEventListener(pAcc, Agent)
+{
+}
+
+AccDescendantManagerEventListener::~AccDescendantManagerEventListener()
+{
+}
+
+/**
+ * Uno's event notifier when event is captured
+ * @param AccessibleEventObject     the event object which contains information about event
+ */
+void  AccDescendantManagerEventListener::notifyEvent( const css::accessibility::AccessibleEventObject& aEvent )
+{
+    SolarMutexGuard g;
+
+    switch (aEvent.EventId)
+    {
+    case AccessibleEventId::SELECTION_CHANGED:
+        HandleSelectionChangedEvent(aEvent.OldValue, aEvent.NewValue);
+        break;
+    case AccessibleEventId::CHILD:
+        HandleChildChangedEvent(aEvent.OldValue, aEvent.NewValue);
+        break;
+    case AccessibleEventId::ACTIVE_DESCENDANT_CHANGED_NOFOCUS:
+        HandleChildChangedNoFocusEvent(aEvent.OldValue, aEvent.NewValue);
+        break;
+    case AccessibleEventId::SELECTION_CHANGED_ADD:
+        HandleSelectionChangedAddEvent(aEvent.OldValue, aEvent.NewValue);
+        break;
+    case AccessibleEventId::SELECTION_CHANGED_REMOVE:
+        HandleSelectionChangedRemoveEvent(aEvent.OldValue, aEvent.NewValue);
+        break;
+    case AccessibleEventId::SELECTION_CHANGED_WITHIN:
+        HandleSelectionChangedWithinEvent(aEvent.OldValue, aEvent.NewValue);
+        break;
+    default:
+        AccComponentEventListener::notifyEvent(aEvent);
+        break;
+    }
+}
+
+/**
+ *  handle the CHILD event
+ *  @param  oldValue    the child to be deleted
+ *  @param  newValue    the child to be added
+ */
+void AccDescendantManagerEventListener::HandleChildChangedEvent(Any oldValue, Any newValue)
+{
+
+    Reference< XAccessible > xChild;
+    if( newValue >>= xChild)
+    {
+        //create a new child
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+            pAgent->InsertAccObj(pAcc, m_xAccessible.get());
+            pAgent->InsertChildrenAccObj(pAcc);
+
+            pAgent->NotifyAccEvent(UnoMSAAEvent::CHILD_ADDED, pAcc);
+
+        }
+    }
+
+    if (oldValue >>= xChild)
+    {
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+
+            pAgent->NotifyAccEvent(UnoMSAAEvent::CHILD_REMOVED, pAcc);
+            pAgent->DeleteChildrenAccObj( pAcc );
+            pAgent->DeleteAccObj( pAcc );
+        }
+    }
+
+}
+
+/**
+ *  handle the SELECTION_CHANGED event
+ */
+void AccDescendantManagerEventListener::HandleSelectionChangedEvent(Any oldValue, Any newValue)
+{
+    bool bSend =false;
+    Reference< XAccessible > xChild;
+    if(newValue >>= xChild )
+    {
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+            //if the Role is the SC cell ,don't add the selected state.
+            if (pAgent->GetRole(pAcc) != AccessibleRole::TABLE_CELL)
+            {
+                pAgent->IncreaseState( pAcc, AccessibleStateType::SELECTED);
+            }
+
+            pAgent->NotifyAccEvent(UnoMSAAEvent::SELECTION_CHANGED, pAcc);
+            bSend=true;
+        }
+    }
+    if(oldValue >>= xChild )
+    {
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+            pAgent->DecreaseState( pAcc, AccessibleStateType::SELECTED);
+        }
+    }
+    if (!bSend)
+    {
+        pAgent->NotifyAccEvent(UnoMSAAEvent::SELECTION_CHANGED, m_xAccessible.get());
+    }
+}
+
+
+void AccDescendantManagerEventListener::HandleChildChangedNoFocusEvent(Any oldValue, Any newValue)
+{
+    Reference< XAccessible > xChild;
+    if(newValue >>= xChild )
+    {
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+
+            pAgent->InsertAccObj(pAcc, m_xAccessible.get());
+            pAgent->InsertChildrenAccObj(pAcc);
+        }
+    }
+    if (oldValue >>= xChild)
+    {
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+            pAgent->DeleteChildrenAccObj( pAcc );
+            pAgent->DeleteAccObj( pAcc );
+        }
+    }
+}
+
+bool AccDescendantManagerEventListener::NotifyChildEvent(UnoMSAAEvent eWinEvent, const Any& Value)
+{
+    Reference< XAccessible > xChild;
+    if(Value >>= xChild )
+    {
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+            pAgent->NotifyAccEvent(eWinEvent, pAcc);
+
+            if (pAgent->IsStateManageDescendant(m_xAccessible.get()))
+            {
+                if (eWinEvent == UnoMSAAEvent::SELECTION_CHANGED_REMOVE)
+                {
+                    // The object has just been sent in a SELECTION_CHANGED_REMOVE event
+                    // and accessibility tools may query for the object and call methods on
+                    // it as a response to this.
+                    // Therefore, don't delete the object yet, but remember it for deletion
+                    // once the next event of a different type occurs.
+                    m_aUnselectedChildrenForDeletion.push_back(pAcc);
+                }
+                else
+                {
+                    // handle any pending deletions for objects previously removed from selection
+                    for (XAccessible* pAcc2 : m_aUnselectedChildrenForDeletion)
+                        pAgent->DeleteAccObj(pAcc2);
+                    m_aUnselectedChildrenForDeletion.clear();
+                }
+            }
+            return true;
+        }
+    }
+    return false;
+}
+void AccDescendantManagerEventListener::HandleSelectionChangedAddEvent(const Any& /*oldValue*/, const Any &newValue)
+{
+    if (NotifyChildEvent(UnoMSAAEvent::SELECTION_CHANGED_ADD, newValue))
+    {
+        return ;
+    }
+    pAgent->NotifyAccEvent(UnoMSAAEvent::SELECTION_CHANGED_ADD, m_xAccessible.get());
+}
+
+void AccDescendantManagerEventListener::HandleSelectionChangedRemoveEvent(const Any& /*oldValue*/, const Any &newValue)
+{
+    if (NotifyChildEvent(UnoMSAAEvent::SELECTION_CHANGED_REMOVE, newValue))
+    {
+        return ;
+    }
+    pAgent->NotifyAccEvent(UnoMSAAEvent::SELECTION_CHANGED_REMOVE, m_xAccessible.get());
+}
+
+void AccDescendantManagerEventListener::HandleSelectionChangedWithinEvent(const Any& /*oldValue*/, const Any &newValue)
+{
+    if (NotifyChildEvent(UnoMSAAEvent::SELECTION_CHANGED_WITHIN, newValue))
+    {
+        return ;
+    }
+    pAgent->NotifyAccEvent(UnoMSAAEvent::SELECTION_CHANGED_WITHIN, m_xAccessible.get());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */