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Diffstat (limited to 'winaccessibility/source/service/AccListEventListener.cxx')
-rw-r--r-- | winaccessibility/source/service/AccListEventListener.cxx | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/winaccessibility/source/service/AccListEventListener.cxx b/winaccessibility/source/service/AccListEventListener.cxx new file mode 100644 index 000000000..b4ecb9f77 --- /dev/null +++ b/winaccessibility/source/service/AccListEventListener.cxx @@ -0,0 +1,126 @@ +/* -*- 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 <AccListEventListener.hxx> +#include <AccObjectManagerAgent.hxx> +#include <unomsaaevent.hxx> + +using namespace com::sun::star::uno; +using namespace com::sun::star::accessibility; + +AccListEventListener::AccListEventListener(css::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent) + :AccDescendantManagerEventListener(pAcc, Agent) +{ +} + +AccListEventListener::~AccListEventListener() +{ +} + +/** + * Uno's event notifier when event is captured + * @param AccessibleEventObject the event object which contains information about event + */ +void AccListEventListener::notifyEvent( const css::accessibility::AccessibleEventObject& aEvent ) +{ + SolarMutexGuard g; + + switch (aEvent.EventId) + { + case AccessibleEventId::ACTIVE_DESCENDANT_CHANGED: + HandleActiveDescendantChangedEvent(aEvent.OldValue, aEvent.NewValue); + break; + case AccessibleEventId::INVALIDATE_ALL_CHILDREN: + // Since List items a transient a child events are mostly used + // to attach/detach listeners, it is safe to ignore it here + //TODO: investigate again + break; + case AccessibleEventId::VALUE_CHANGED: + HandleValueChangedEvent(aEvent.OldValue, aEvent.NewValue); + break; + default: + AccDescendantManagerEventListener::notifyEvent(aEvent); + break; + } +} + +/** + * handle the ACTIVE_DESCENDANT_CHANGED event + * @param oldValue the child to lose active + * @param newValue the child to get active + */ +void AccListEventListener::HandleActiveDescendantChangedEvent(Any oldValue, Any newValue) +{ + Reference< XAccessible > xChild; + + if(newValue >>= xChild ) + { + if(xChild.is()) + { + XAccessible* pAcc = xChild.get(); + + // Valueset has cache the child item xacc,Update state if no insert obj + bool bHasCache = pAgent->InsertAccObj(pAcc, m_xAccessible.get()); + if (!bHasCache) + { + pAgent->UpdateState(pAcc); + } + + pAgent->IncreaseState( pAcc, AccessibleStateType::FOCUSED); + + pAgent->NotifyAccEvent(UnoMSAAEvent::ACTIVE_DESCENDANT_CHANGED, pAcc); + } + } + if (oldValue >>= xChild) + { + if(xChild.is()) + { + XAccessible* pAcc = xChild.get(); + pAgent->DeleteAccObj( pAcc ); + } + } +} + +/** + * 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 AccListEventListener::HandleValueChangedEvent(Any, Any) +{ + //to enable value changed event + if (GetParentRole() == AccessibleRole::COMBO_BOX) + { + XAccessible* pParentAcc = + pAgent->GetParentXAccessible(m_xAccessible.get()); + pAgent->UpdateValue(pParentAcc); + pAgent->NotifyAccEvent(UnoMSAAEvent::OBJECT_VALUECHANGE, pParentAcc); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |