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Diffstat (limited to 'winaccessibility/source/service/AccListEventListener.cxx')
-rw-r--r-- | winaccessibility/source/service/AccListEventListener.cxx | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/winaccessibility/source/service/AccListEventListener.cxx b/winaccessibility/source/service/AccListEventListener.cxx new file mode 100644 index 000000000000..4b79a76155fc --- /dev/null +++ b/winaccessibility/source/service/AccListEventListener.cxx @@ -0,0 +1,123 @@ +/************************************************************** + * + * 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 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + *************************************************************/ + +#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 "AccListEventListener.hxx" +#include "AccObjectManagerAgent.hxx" +#include "unomsaaevent.hxx" + +using namespace com::sun::star::uno; +using namespace com::sun::star::accessibility; + +AccListEventListener::AccListEventListener(com::sun::star::accessibility::XAccessible* pAcc, AccObjectManagerAgent* Agent) + :AccDescendantManagerEventListener(pAcc, Agent), + shouldDeleteChild(true) +{ +} + +AccListEventListener::~AccListEventListener() +{ +} + +/** + * Uno's event notifier when event is captured + * @param AccessibleEventObject the event object which contains information about event + */ +void AccListEventListener::notifyEvent( const ::com::sun::star::accessibility::AccessibleEventObject& aEvent ) throw (::com::sun::star::uno::RuntimeException) +{ + 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 save 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 + sal_Bool bHasCache = pAgent->InsertAccObj(pAcc,pAccessible); + if (!bHasCache) + { + pAgent->UpdateState(pAcc); + } + + pAgent->IncreaseState( pAcc, AccessibleStateType::FOCUSED); + + pAgent->NotifyAccEvent(UM_EVENT_ACTIVE_DESCENDANT_CHANGED, pAcc); + pActiveDescendant= 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 oldValue, Any newValue) +{ + //to enable value changed event + if(getParentRole() == AccessibleRole::COMBO_BOX) + { + XAccessible* pParentAcc = pAgent->GetParentXAccessible(pAccessible); + pAgent->UpdateValue(pParentAcc); + pAgent->NotifyAccEvent(UM_EVENT_OBJECT_VALUECHANGE, pParentAcc); + } +} |