AccTreeEventListener.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#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()
{
}
 
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;
    }
}
 
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 );
        }
    }
 
}
 
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