1 files changed, 90 insertions, 0 deletions
diff --git a/winaccessibility/source/service/AccTreeEventListener.cxx b/winaccessibility/source/service/AccTreeEventListener.cxx
new file mode 100644
index 000000000..ee3be70ac
--- /dev/null
+++ b/winaccessibility/source/service/AccTreeEventListener.cxx
@@ -0,0 +1,90 @@
+/* -*- 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 <AccTreeEventListener.hxx>
+#include <AccObjectManagerAgent.hxx>
+#include <unomsaaevent.hxx>
+
+using namespace com::sun::star::uno;
+using namespace com::sun::star::accessibility;
+
+AccTreeEventListener::AccTreeEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
+        :AccDescendantManagerEventListener(pAcc, Agent)
+{}
+AccTreeEventListener::~AccTreeEventListener()
+{
+}
+
+/**
+ *  Uno's event notifier when event is captured
+ *  @param AccessibleEventObject    the event object which contains information about event
+ */
+void  AccTreeEventListener::notifyEvent( const css::accessibility::AccessibleEventObject& aEvent )
+{
+    SolarMutexGuard g;
+
+    switch (aEvent.EventId)
+    {
+    case AccessibleEventId::ACTIVE_DESCENDANT_CHANGED:
+        HandleActiveDescendantChangedEvent(aEvent.OldValue, aEvent.NewValue);
+        break;
+    default:
+        AccDescendantManagerEventListener::notifyEvent(aEvent);
+        break;
+    }
+}
+
+/**
+ *  handle the ACTIVE_DESCENDANT_CHANGED event
+ *  @param  oldValue    the child to lose active
+ *  @param  newValue    the child to get active
+ */
+void AccTreeEventListener::HandleActiveDescendantChangedEvent(Any oldValue, Any newValue)
+{
+    Reference< XAccessible > xChild;
+    if(newValue >>= xChild )
+    {
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+            pAgent->InsertAccObj(pAcc, m_xAccessible.get());
+            pAgent->NotifyAccEvent(UnoMSAAEvent::ACTIVE_DESCENDANT_CHANGED, pAcc);
+        }
+    }
+    if (oldValue >>= xChild)
+    {
+        //delete an existing child
+        if(xChild.is())
+        {
+            XAccessible* pAcc = xChild.get();
+            pAgent->DeleteAccObj( pAcc );
+        }
+    }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */