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/**************************************************************
*
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
#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 "AccListEventListener.hxx"
#include "AccObjectManagerAgent.hxx"
#include "unomsaaevent.hxx"
using namespace com::sun::star::uno;
using namespace com::sun::star::accessibility;
AccListEventListener::AccListEventListener(com::sun::star::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
:AccDescendantManagerEventListener(pAcc, Agent),
shouldDeleteChild(true)
{
}
AccListEventListener::~AccListEventListener()
{
}
/**
* Uno's event notifier when event is captured
* @param AccessibleEventObject the event object which contains information about event
*/
void AccListEventListener::notifyEvent( const ::com::sun::star::accessibility::AccessibleEventObject& aEvent ) throw (::com::sun::star::uno::RuntimeException)
{
switch (aEvent.EventId)
{
case AccessibleEventId::ACTIVE_DESCENDANT_CHANGED:
handleActiveDescendantChangedEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::INVALIDATE_ALL_CHILDREN:
// Since List items a transient a child events are mostly used
// to attach/detach listeners, it is save to ignore it here
//TODO: investigate again
break;
case AccessibleEventId::VALUE_CHANGED:
handleValueChangedEvent(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 AccListEventListener::handleActiveDescendantChangedEvent(Any oldValue, Any newValue)
{
Reference< XAccessible > xChild;
if(newValue >>= xChild )
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
// Valueset has cache the child item xacc,Update state if no insert obj
sal_Bool bHasCache = pAgent->InsertAccObj(pAcc,pAccessible);
if (!bHasCache)
{
pAgent->UpdateState(pAcc);
}
pAgent->IncreaseState( pAcc, AccessibleStateType::FOCUSED);
pAgent->NotifyAccEvent(UM_EVENT_ACTIVE_DESCENDANT_CHANGED, pAcc);
pActiveDescendant= pAcc;
}
}
if (oldValue >>= xChild)
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
pAgent->DeleteAccObj( pAcc );
}
}
}
/**
* handle the VALUE_CHANGED event
*
* @param oldValue the old value of the source of event
* @param newValue the new value of the source of event
*/
void AccListEventListener::handleValueChangedEvent(Any oldValue, Any newValue)
{
//to enable value changed event
if(getParentRole() == AccessibleRole::COMBO_BOX)
{
XAccessible* pParentAcc = pAgent->GetParentXAccessible(pAccessible);
pAgent->UpdateValue(pParentAcc);
pAgent->NotifyAccEvent(UM_EVENT_OBJECT_VALUECHANGE, pParentAcc);
}
}
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