/* -*- 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 <AccDescendantManagerEventListener.hxx>
#include <AccObjectManagerAgent.hxx>
#include <unomsaaevent.hxx>
using namespace com::sun::star::uno;
using namespace com::sun::star::accessibility;
AccDescendantManagerEventListener::AccDescendantManagerEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
: AccComponentEventListener(pAcc, Agent)
{
}
AccDescendantManagerEventListener::~AccDescendantManagerEventListener()
{
}
/**
* Uno's event notifier when event is captured
* @param AccessibleEventObject the event object which contains information about event
*/
void AccDescendantManagerEventListener::notifyEvent( const css::accessibility::AccessibleEventObject& aEvent )
{
SolarMutexGuard g;
switch (aEvent.EventId)
{
case AccessibleEventId::SELECTION_CHANGED:
HandleSelectionChangedEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::CHILD:
HandleChildChangedEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::ACTIVE_DESCENDANT_CHANGED_NOFOCUS:
HandleChildChangedNoFocusEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::SELECTION_CHANGED_ADD:
HandleSelectionChangedAddEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::SELECTION_CHANGED_REMOVE:
HandleSelectionChangedRemoveEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::SELECTION_CHANGED_WITHIN:
HandleSelectionChangedWithinEvent(aEvent.OldValue, aEvent.NewValue);
break;
default:
AccComponentEventListener::notifyEvent(aEvent);
break;
}
}
/**
* handle the CHILD event
* @param oldValue the child to be deleted
* @param newValue the child to be added
*/
void AccDescendantManagerEventListener::HandleChildChangedEvent(Any oldValue, Any newValue)
{
Reference< XAccessible > xChild;
if( newValue >>= xChild)
{
//create a new child
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
pAgent->InsertAccObj(pAcc, m_xAccessible.get());
pAgent->InsertChildrenAccObj(pAcc);
pAgent->NotifyAccEvent(UM_EVENT_CHILD_ADDED, pAcc);
}
}
if (oldValue >>= xChild)
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
pAgent->NotifyAccEvent(UM_EVENT_CHILD_REMOVED, pAcc);
pAgent->DeleteChildrenAccObj( pAcc );
pAgent->DeleteAccObj( pAcc );
}
}
}
/**
* handle the SELECTION_CHANGED event
*/
void AccDescendantManagerEventListener::HandleSelectionChangedEvent(Any oldValue, Any newValue)
{
bool bSend =false;
Reference< XAccessible > xChild;
if(newValue >>= xChild )
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
//if the Role is the SC cell ,don't add the selected state.
if (pAgent->GetRole(pAcc) != AccessibleRole::TABLE_CELL)
{
pAgent->IncreaseState( pAcc, AccessibleStateType::SELECTED);
}
pAgent->NotifyAccEvent(UM_EVENT_SELECTION_CHANGED, pAcc);
bSend=true;
}
}
if(oldValue >>= xChild )
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
pAgent->DecreaseState( pAcc, AccessibleStateType::SELECTED);
}
}
if (!bSend)
{
pAgent->NotifyAccEvent(UM_EVENT_SELECTION_CHANGED, m_xAccessible.get());
}
}
void AccDescendantManagerEventListener::HandleChildChangedNoFocusEvent(Any oldValue, Any newValue)
{
Reference< XAccessible > xChild;
if(newValue >>= xChild )
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
pAgent->InsertAccObj(pAcc, m_xAccessible.get());
pAgent->InsertChildrenAccObj(pAcc);
}
}
if (oldValue >>= xChild)
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
pAgent->DeleteChildrenAccObj( pAcc );
pAgent->DeleteAccObj( pAcc );
}
}
}
bool AccDescendantManagerEventListener::NotifyChildEvent(short nWinEvent,const Any &Value)
{
Reference< XAccessible > xChild;
if(Value >>= xChild )
{
if(xChild.is())
{
XAccessible* pAcc = xChild.get();
pAgent->NotifyAccEvent(nWinEvent, pAcc);
if (pAgent && pAgent->IsStateManageDescendant(m_xAccessible.get())
&& (nWinEvent == UM_EVENT_SELECTION_CHANGED_REMOVE))
{
pAgent->DeleteAccObj( pAcc );
}
return true;
}
}
return false;
}
void AccDescendantManagerEventListener::HandleSelectionChangedAddEvent(const Any& /*oldValue*/, const Any &newValue)
{
if(NotifyChildEvent(UM_EVENT_SELECTION_CHANGED_ADD,newValue))
{
return ;
}
pAgent->NotifyAccEvent(UM_EVENT_SELECTION_CHANGED_ADD, m_xAccessible.get());
}
void AccDescendantManagerEventListener::HandleSelectionChangedRemoveEvent(const Any& /*oldValue*/, const Any &newValue)
{
if(NotifyChildEvent(UM_EVENT_SELECTION_CHANGED_REMOVE,newValue))
{
return ;
}
pAgent->NotifyAccEvent(UM_EVENT_SELECTION_CHANGED_REMOVE, m_xAccessible.get());
}
void AccDescendantManagerEventListener::HandleSelectionChangedWithinEvent(const Any& /*oldValue*/, const Any &newValue)
{
if(NotifyChildEvent(UM_EVENT_SELECTION_CHANGED_WITHIN,newValue))
{
return ;
}
pAgent->NotifyAccEvent(UM_EVENT_SELECTION_CHANGED_WITHIN, m_xAccessible.get());
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V595 The 'pAgent' pointer was utilized before it was verified against nullptr. Check lines: 184, 186.