AccMenuEventListener.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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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 <AccMenuEventListener.hxx>
#include <AccObjectManagerAgent.hxx>
#include <unomsaaevent.hxx>
 
using namespace com::sun::star::uno;
using namespace com::sun::star::accessibility;
 
AccMenuEventListener::AccMenuEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
        :AccComponentEventListener(pAcc, Agent)
{}
AccMenuEventListener::~AccMenuEventListener()
{
}
 
void  AccMenuEventListener::notifyEvent( const css::accessibility::AccessibleEventObject& aEvent )
{
    SolarMutexGuard g;
 
    switch (aEvent.EventId)
    {
    case AccessibleEventId::CHILD:
        HandleChildChangedEvent(aEvent.OldValue, aEvent.NewValue);
        break;
    case AccessibleEventId::SELECTION_CHANGED:
        //don't need to process anything,just same as word behavior
        //handleSelectionChangedEvent();
        break;
    default:
        AccComponentEventListener::notifyEvent(aEvent);
        break;
    }
}
 
void AccMenuEventListener::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);
            //delete all oldValue's existing children
            pAgent->DeleteChildrenAccObj( pAcc );
            //delete this child
            pAgent->DeleteAccObj( pAcc );
        }
    }
 
}
 
void AccMenuEventListener::HandleSelectionChangedEventNoArgs()
{
    pAgent->NotifyAccEvent(UnoMSAAEvent::SELECTION_CHANGED, m_xAccessible.get());
}
 
void AccMenuEventListener::FireStatePropertyChange(sal_Int64 state, bool set)
{
    if( set )
    {
        // new value
        switch(state)
        {
            //for sub menu is popup, there is a menu selected event.
        case AccessibleStateType::SELECTED:
            pAgent->IncreaseState(m_xAccessible.get(), state);
            pAgent->UpdateChildState(m_xAccessible.get());
            break;
        default:
            AccComponentEventListener::FireStatePropertyChange(state, set);
            break;
        }
    }
    else
    {
        switch(state)
        {
            //for sub menu is popup, there is a menu selected event.
        case AccessibleStateType::SELECTED:
            pAgent->DecreaseState(m_xAccessible.get(), state);
 
            break;
        default:
            AccComponentEventListener::FireStatePropertyChange(state, set);
            break;
        }
    }
}
 
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