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Diffstat (limited to 'winaccessibility/source/service/AccComponentEventListener.cxx')
-rw-r--r-- | winaccessibility/source/service/AccComponentEventListener.cxx | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/winaccessibility/source/service/AccComponentEventListener.cxx b/winaccessibility/source/service/AccComponentEventListener.cxx new file mode 100644 index 000000000..f2a649a05 --- /dev/null +++ b/winaccessibility/source/service/AccComponentEventListener.cxx @@ -0,0 +1,325 @@ +/* -*- 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(css::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 css::accessibility::AccessibleEventObject& aEvent ) +{ + 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, Any) +{ + pAgent->UpdateValue(m_xAccessible.get()); + pAgent->NotifyAccEvent(UnoMSAAEvent::OBJECT_VALUECHANGE, m_xAccessible.get()); +} + +/** + * handle the NAME_CHANGED event + */ +void AccComponentEventListener::HandleActionChangedEvent() +{ + pAgent->UpdateAction(m_xAccessible.get()); + pAgent->NotifyAccEvent(UnoMSAAEvent::OBJECT_DEFACTIONCHANGE, m_xAccessible.get()); +} + +/** + * 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, Any newValue) +{ + pAgent->UpdateValue(m_xAccessible.get(), newValue); + pAgent->NotifyAccEvent(UnoMSAAEvent::OBJECT_VALUECHANGE, m_xAccessible.get()); +} + +/** + * 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, Any) +{ + pAgent->NotifyAccEvent(UnoMSAAEvent::OBJECT_CARETCHANGE, m_xAccessible.get()); +} + +/** + * 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(m_xAccessible.get(), AccessibleStateType::VISIBLE); + pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::FOCUSABLE); + } + else + { + pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE); + pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::FOCUSABLE); + } + } + else + { + FireStatePropertyChange(state, enable); + } + break; + case AccessibleStateType::FOCUSED: + FireStateFocusedChange(enable); + break; + case AccessibleStateType::ENABLED: + if(enable) + { + pAgent->UpdateState(m_xAccessible.get()); + pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::DEFUNC); + // 8. label should have no FOCUSABLE state, Firefox has READONLY state, we can also have. + if ( GetRole() != AccessibleRole::LABEL + && GetRole() != AccessibleRole::STATIC + && GetRole() != AccessibleRole::SCROLL_BAR) + { + pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::FOCUSABLE); + } + } + else + { + pAgent->UpdateState(m_xAccessible.get()); + pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::DEFUNC); + pAgent->DecreaseState(m_xAccessible.get(), 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(m_xAccessible.get(), state); + pAgent->UpdateAction(m_xAccessible.get()); + + if (!pAgent->IsSpecialToolbarItem(m_xAccessible.get())) + { + pAgent->NotifyAccEvent(UnoMSAAEvent::STATE_CHECKED, m_xAccessible.get()); + } + break; + case AccessibleStateType::PRESSED: + pAgent->IncreaseState(m_xAccessible.get(), state); + pAgent->NotifyAccEvent(UnoMSAAEvent::STATE_PRESSED, m_xAccessible.get()); + break; + case AccessibleStateType::SELECTED: + pAgent->IncreaseState(m_xAccessible.get(), state); + break; + case AccessibleStateType::ARMED: + pAgent->IncreaseState(m_xAccessible.get(), state); + pAgent->NotifyAccEvent(UnoMSAAEvent::STATE_ARMED, m_xAccessible.get()); + break; + case AccessibleStateType::SHOWING: + pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::DEFUNC); + // UNO !SHOWING == MSAA OFFSCREEN + pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::SHOWING ); + break; + case AccessibleStateType::VISIBLE: + // UNO !VISIBLE == MSAA INVISIBLE + pAgent->IncreaseState(m_xAccessible.get(), AccessibleStateType::VISIBLE ); + break; + default: + break; + } + } + else + { + // old value + switch(state) + { + case AccessibleStateType::CHECKED: + case AccessibleStateType::INDETERMINATE: + pAgent->DecreaseState(m_xAccessible.get(), state); + pAgent->UpdateAction(m_xAccessible.get()); + + if (!pAgent->IsSpecialToolbarItem(m_xAccessible.get())) + { + pAgent->NotifyAccEvent(UnoMSAAEvent::STATE_CHECKED, m_xAccessible.get()); + } + break; + case AccessibleStateType::PRESSED: + pAgent->DecreaseState(m_xAccessible.get(), state); + pAgent->NotifyAccEvent(UnoMSAAEvent::STATE_PRESSED, m_xAccessible.get()); + break; + case AccessibleStateType::SELECTED: + pAgent->DecreaseState(m_xAccessible.get(), state); + //if the state is unset, no need to send MSAA SELECTION event + //pAgent->NotifyAccEvent(UnoMSAAEvent::STATE_SELECTED, m_xAccessible.get()); + break; + case AccessibleStateType::ARMED: + { + pAgent->DecreaseState(m_xAccessible.get(), state); + //if the state is unset, no need to send MSAA MENU event + //pAgent->NotifyAccEvent(UnoMSAAEvent::STATE_ARMED, m_xAccessible.get()); + } + break; + case AccessibleStateType::SHOWING: + pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::DEFUNC); + // UNO !SHOWING == MSAA OFFSCREEN + pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::SHOWING); + break; + case AccessibleStateType::VISIBLE: + // UNO !VISIBLE == MSAA INVISIBLE + pAgent->DecreaseState(m_xAccessible.get(), 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(UnoMSAAEvent::STATE_FOCUSED, m_xAccessible.get()); + } + else + { + //if lose focus, no need to send MSAA FOCUS event + pAgent->DecreaseState(m_xAccessible.get(), AccessibleStateType::FOCUSED); + } +} + +void AccComponentEventListener::HandleSelectionChangedEventNoArgs() +{ + pAgent->NotifyAccEvent(UnoMSAAEvent::SELECTION_CHANGED, m_xAccessible.get()); +} + +//add TEXT_SELECTION_CHANGED event +void AccComponentEventListener::HandleTextSelectionChangedEvent() +{ + pAgent->NotifyAccEvent(UnoMSAAEvent::TEXT_SELECTION_CHANGED, m_xAccessible.get()); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |