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/* -*- 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 "AccComponentEventListener.hxx"
#include "AccObjectManagerAgent.hxx"
#include "unomsaaevent.hxx"
using namespace com::sun::star::uno;
using namespace com::sun::star::accessibility;
AccComponentEventListener::AccComponentEventListener(com::sun::star::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent)
:AccEventListener(pAcc, Agent)
{
}
AccComponentEventListener::~AccComponentEventListener()
{
}
/**
* Uno's event notifier when event is captured
*
* @param AccessibleEventObject the event object which contains information about event
*/
void AccComponentEventListener::notifyEvent( const ::com::sun::star::accessibility::AccessibleEventObject& aEvent )
throw (::com::sun::star::uno::RuntimeException)
{
SolarMutexGuard g;
switch (aEvent.EventId)
{
case AccessibleEventId::VALUE_CHANGED:
HandleValueChangedEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::ACTION_CHANGED:
HandleActionChangedEvent();
break;
case AccessibleEventId::TEXT_CHANGED:
HandleTextChangedEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::CARET_CHANGED:
HandleCaretChangedEvent(aEvent.OldValue, aEvent.NewValue);
break;
case AccessibleEventId::VISIBLE_DATA_CHANGED:
HandleVisibleDataChangedEvent();
break;
case AccessibleEventId::BOUNDRECT_CHANGED:
HandleBoundrectChangedEvent();
break;
case AccessibleEventId::SELECTION_CHANGED:
HandleSelectionChangedEventNoArgs();
break;
//to add TEXT_SELECTION_CHANGED event
case AccessibleEventId::TEXT_SELECTION_CHANGED:
HandleTextSelectionChangedEvent();
break;
//End
default:
AccEventListener::notifyEvent(aEvent);
break;
}
}
/**
* 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 AccComponentEventListener::HandleValueChangedEvent(Any oldValue, Any newValue)
{
pAgent->UpdateValue(pAccessible);
pAgent->NotifyAccEvent(UM_EVENT_OBJECT_VALUECHANGE, pAccessible);
}
/**
* handle the NAME_CHANGED event
*/
void AccComponentEventListener::HandleActionChangedEvent()
{
pAgent->UpdateAction(pAccessible);
pAgent->NotifyAccEvent(UM_EVENT_OBJECT_DEFACTIONCHANGE, pAccessible);
}
/**
* handle the TEXT_CHANGED event
*
* @param oldValue the old value of the source of event
* @param newValue the new value of the source of event
*/
void AccComponentEventListener::HandleTextChangedEvent(Any oldValue, Any newValue)
{
pAgent->UpdateValue(pAccessible, newValue);
pAgent->NotifyAccEvent(UM_EVENT_OBJECT_VALUECHANGE, pAccessible);
}
/**
* handle the CARET_CHANGED event
*
* @param oldValue the old value of the source of event
* @param newValue the new value of the source of event
*/
void AccComponentEventListener::HandleCaretChangedEvent(Any oldValue, Any newValue)
{
pAgent->NotifyAccEvent(UM_EVENT_OBJECT_CARETCHANGE, pAccessible);
}
/**
* set the new state and fire the MSAA event
*
* @param state new state id
* @param enable true if state is set, false if state is unset
*/
void AccComponentEventListener::SetComponentState(short state, bool enable)
{
// only the following state can be fired state event.
switch (state)
{
case AccessibleStateType::CHECKED:
case AccessibleStateType::PRESSED:
case AccessibleStateType::SELECTED:
case AccessibleStateType::ARMED:
case AccessibleStateType::INDETERMINATE:
case AccessibleStateType::SHOWING:
FireStatePropertyChange(state, enable);
break;
case AccessibleStateType::VISIBLE:
if (GetRole() == AccessibleRole::MENU_ITEM)
{
if(enable)
{
pAgent->IncreaseState( pAccessible, AccessibleStateType::VISIBLE);
pAgent->IncreaseState( pAccessible, AccessibleStateType::FOCUSABLE);
}
else
{
pAgent->DecreaseState( pAccessible, AccessibleStateType::VISIBLE);
pAgent->DecreaseState( pAccessible, AccessibleStateType::FOCUSABLE);
}
}
else
{
FireStatePropertyChange(state, enable);
}
break;
case AccessibleStateType::FOCUSED:
FireStateFocusedChange(enable);
break;
case AccessibleStateType::ENABLED:
if(enable)
{
pAgent->UpdateState(pAccessible);
pAgent->DecreaseState( pAccessible, AccessibleStateType::DEFUNC);
// 8. label should have no FOCUSABLE state state, Firefox has READONLY state, we can also have.
if ( GetRole() != AccessibleRole::LABEL
&& GetRole() != AccessibleRole::SCROLL_BAR)
{
pAgent->IncreaseState( pAccessible, AccessibleStateType::FOCUSABLE);
}
}
else
{
pAgent->UpdateState(pAccessible);
pAgent->IncreaseState( pAccessible, AccessibleStateType::DEFUNC);
pAgent->DecreaseState( pAccessible, AccessibleStateType::FOCUSABLE);
}
break;
case AccessibleStateType::ACTIVE:
// Only frames should be active
// no msaa state mapping
break;
default:
break;
}
}
/**
* fire the MSAA state changed event
*
* @param state the state id
* @param set true if state is set, false if state is unset
*/
void AccComponentEventListener::FireStatePropertyChange(short state, bool set)
{
if( set)
{
// new value
switch(state)
{
case AccessibleStateType::CHECKED:
case AccessibleStateType::INDETERMINATE:
pAgent->IncreaseState( pAccessible, state);
pAgent->UpdateAction( pAccessible );
if(!pAgent->IsSpecialToolboItem(pAccessible))
{
pAgent->NotifyAccEvent(UM_EVENT_STATE_CHECKED, pAccessible);
}
break;
case AccessibleStateType::PRESSED:
pAgent->IncreaseState( pAccessible, state);
pAgent->NotifyAccEvent(UM_EVENT_STATE_PRESSED, pAccessible);
break;
case AccessibleStateType::SELECTED:
pAgent->IncreaseState( pAccessible, state);
break;
case AccessibleStateType::ARMED:
pAgent->IncreaseState( pAccessible, state);
pAgent->NotifyAccEvent(UM_EVENT_STATE_ARMED, pAccessible);
break;
case AccessibleStateType::SHOWING:
pAgent->DecreaseState( pAccessible, AccessibleStateType::DEFUNC);
// UNO !SHOWING == MSAA OFFSCREEN
pAgent->IncreaseState( pAccessible, AccessibleStateType::SHOWING );
break;
case AccessibleStateType::VISIBLE:
// UNO !VISIBLE == MSAA INVISIBLE
pAgent->IncreaseState( pAccessible, AccessibleStateType::VISIBLE );
break;
default:
break;
}
}
else
{
// old value
switch(state)
{
case AccessibleStateType::CHECKED:
case AccessibleStateType::INDETERMINATE:
pAgent->DecreaseState( pAccessible, state );
pAgent->UpdateAction( pAccessible );
if(!pAgent->IsSpecialToolboItem(pAccessible))
{
pAgent->NotifyAccEvent(UM_EVENT_STATE_CHECKED, pAccessible);
}
break;
case AccessibleStateType::PRESSED:
pAgent->DecreaseState( pAccessible, state );
pAgent->NotifyAccEvent(UM_EVENT_STATE_PRESSED, pAccessible);
break;
case AccessibleStateType::SELECTED:
pAgent->DecreaseState( pAccessible, state );
//if the state is unset, no need to send MSAA SELECTION event
//pAgent->NotifyAccEvent(UM_EVENT_STATE_SELECTED, pAccessible);
break;
case AccessibleStateType::ARMED:
{
pAgent->DecreaseState( pAccessible, state);
//if the state is unset, no need to send MSAA MENU event
//pAgent->NotifyAccEvent(UM_EVENT_STATE_ARMED, pAccessible);
}
break;
case AccessibleStateType::SHOWING:
pAgent->DecreaseState( pAccessible, AccessibleStateType::DEFUNC);
// UNO !SHOWING == MSAA OFFSCREEN
pAgent->DecreaseState( pAccessible, AccessibleStateType::SHOWING );
break;
case AccessibleStateType::VISIBLE:
// UNO !VISIBLE == MSAA INVISIBLE
pAgent->DecreaseState( pAccessible, AccessibleStateType::VISIBLE );
break;
default:
break;
}
}
}
/**
* handle the focused event
*
* @param enable true if get focus, false if lose focus
*/
void AccComponentEventListener::FireStateFocusedChange(bool enable)
{
if(enable)
{
if (GetParentRole() != AccessibleRole::COMBO_BOX)
pAgent->NotifyAccEvent(UM_EVENT_STATE_FOCUSED, pAccessible);
}
else
{
//if lose focus, no need to send MSAA FOCUS event
pAgent->DecreaseState( pAccessible, AccessibleStateType::FOCUSED);
}
}
void AccComponentEventListener::HandleSelectionChangedEventNoArgs()
{
pAgent->NotifyAccEvent(UM_EVENT_SELECTION_CHANGED, pAccessible);
}
//add TEXT_SELECTION_CHANGED event
void AccComponentEventListener::HandleTextSelectionChangedEvent()
{
pAgent->NotifyAccEvent(UM_EVENT_TEXT_SELECTION_CHANGED, pAccessible);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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