AccWindowEventListener.cxx

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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 <AccWindowEventListener.hxx>
#include <AccObjectManagerAgent.hxx>
#include <unomsaaevent.hxx>
 
using namespace com::sun::star::uno;
using namespace com::sun::star::accessibility;
 
AccWindowEventListener::AccWindowEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
        :AccEventListener(pAcc, Agent)
{}
AccWindowEventListener::~AccWindowEventListener()
{
}
 
void  AccWindowEventListener::notifyEvent( const css::accessibility::AccessibleEventObject& aEvent )
{
    SolarMutexGuard g;
 
    switch (aEvent.EventId)
    {
    case AccessibleEventId::CHILD:
        HandleChildChangedEvent(aEvent.OldValue, aEvent.NewValue);
        break;
    case AccessibleEventId::VISIBLE_DATA_CHANGED:
        HandleVisibleDataChangedEvent();
        break;
    case AccessibleEventId::BOUNDRECT_CHANGED:
        HandleBoundrectChangedEvent();
        break;
    default:
        AccEventListener::notifyEvent(aEvent);
        break;
    }
}
 
void AccWindowEventListener::HandleChildChangedEvent(Any oldValue, Any newValue)
{
    Reference< XAccessible > xChild;
    if( newValue >>= xChild)
    {
        //create a new child
        if(xChild.is())
        {
            XAccessible* pAcc = xChild.get();
            //add this child
            pAgent->InsertAccObj(pAcc, m_xAccessible.get());
            //add all oldValue's existing children
            pAgent->InsertChildrenAccObj(pAcc);
            pAgent->NotifyAccEvent(UnoMSAAEvent::CHILD_ADDED, pAcc);
        }
    }
    else if (oldValue >>= xChild)
    {
        //delete an existing child
        if(xChild.is())
        {
            XAccessible* pAcc = xChild.get();
            pAgent->NotifyAccEvent(UnoMSAAEvent::CHILD_REMOVED, pAcc);
            pAgent->DeleteChildrenAccObj( pAcc );
            //delete this child
            pAgent->DeleteAccObj( pAcc );
        }
    }
}
 
void AccWindowEventListener::SetComponentState(sal_Int64 state, bool enable )
{
    // only the following state can be fired state event.
    switch (state)
    {
    case AccessibleStateType::ICONIFIED:
        // no msaa state
        break;
    case AccessibleStateType::VISIBLE:
        // UNO !VISIBLE == MSAA INVISIBLE
        if( enable )
            pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE);
        else
            pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE);
        break;
    case AccessibleStateType::SHOWING:
        // UNO !SHOWING == MSAA OFFSCREEN
        if( enable )
        {
            pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::SHOWING);
        }
        else
            pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::SHOWING);
        break;
    default:
        break;
    }
}
 
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