diff options
Diffstat (limited to 'vcl/aqua/source/a11y/documentfocuslistener.cxx')
-rw-r--r-- | vcl/aqua/source/a11y/documentfocuslistener.cxx | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/vcl/aqua/source/a11y/documentfocuslistener.cxx b/vcl/aqua/source/a11y/documentfocuslistener.cxx new file mode 100644 index 000000000000..02a7337ce397 --- /dev/null +++ b/vcl/aqua/source/a11y/documentfocuslistener.cxx @@ -0,0 +1,253 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#include "documentfocuslistener.hxx" + +#ifndef _COM_SUN_STAR_ACCESSIBILITY_XACCESSIBLEEVENTBROADCASTER_HPP_ +#include <com/sun/star/accessibility/XAccessibleEventBroadcaster.hpp> +#endif + +#ifndef _COM_SUN_STAR_ACCESSIBILITY_ACCESSIBLEEVENTID_HPP_ +#include <com/sun/star/accessibility/AccessibleEventId.hpp> +#endif + +#ifndef _COM_SUN_STAR_ACCESSIBILITY_ACCESSIBLESTATETYPE_HPP_ +#include <com/sun/star/accessibility/AccessibleStateType.hpp> +#endif + +using namespace ::com::sun::star::accessibility; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::uno; + + +//------------------------------------------------------------------------------ + +DocumentFocusListener::DocumentFocusListener(AquaA11yFocusTracker& rTracker) : + m_aFocusTracker(rTracker) +{ +} + +//------------------------------------------------------------------------------ + +void SAL_CALL +DocumentFocusListener::disposing( const EventObject& aEvent ) + throw (RuntimeException) +{ + // Unref the object here, but do not remove as listener since the object + // might no longer be in a state that safely allows this. + if( aEvent.Source.is() ) + m_aRefList.erase(aEvent.Source); +} + +//------------------------------------------------------------------------------ + +void SAL_CALL +DocumentFocusListener::notifyEvent( const AccessibleEventObject& aEvent ) + throw( RuntimeException ) +{ + switch( aEvent.EventId ) + { + case AccessibleEventId::STATE_CHANGED: + try + { + sal_Int16 nState = AccessibleStateType::INVALID; + aEvent.NewValue >>= nState; + + if( AccessibleStateType::FOCUSED == nState ) + m_aFocusTracker.setFocusedObject( getAccessible(aEvent) ); + } + catch(IndexOutOfBoundsException e) + { + OSL_TRACE("Focused object has invalid index in parent"); + } + break; + + case AccessibleEventId::CHILD: + { + Reference< XAccessible > xChild; + if( (aEvent.OldValue >>= xChild) && xChild.is() ) + detachRecursive(xChild); + + if( (aEvent.NewValue >>= xChild) && xChild.is() ) + attachRecursive(xChild); + } + break; + + case AccessibleEventId::INVALIDATE_ALL_CHILDREN: + { + Reference< XAccessible > xAccessible( getAccessible(aEvent) ); + detachRecursive(xAccessible); + attachRecursive(xAccessible); + } + + OSL_TRACE( "Invalidate all children called\n" ); + break; + default: + break; + } +} + +//------------------------------------------------------------------------------ + +Reference< XAccessible > DocumentFocusListener::getAccessible(const EventObject& aEvent ) + throw (IndexOutOfBoundsException, RuntimeException) +{ + Reference< XAccessible > xAccessible(aEvent.Source, UNO_QUERY); + + if( xAccessible.is() ) + return xAccessible; + + Reference< XAccessibleContext > xContext(aEvent.Source, UNO_QUERY); + + if( xContext.is() ) + { + Reference< XAccessible > xParent( xContext->getAccessibleParent() ); + if( xParent.is() ) + { + Reference< XAccessibleContext > xParentContext( xParent->getAccessibleContext() ); + if( xParentContext.is() ) + { + return xParentContext->getAccessibleChild( xContext->getAccessibleIndexInParent() ); + } + } + } + + return Reference< XAccessible >(); +} + +//------------------------------------------------------------------------------ + +void DocumentFocusListener::attachRecursive(const Reference< XAccessible >& xAccessible) + throw (IndexOutOfBoundsException, RuntimeException) +{ + Reference< XAccessibleContext > xContext = xAccessible->getAccessibleContext(); + + if( xContext.is() ) + attachRecursive(xAccessible, xContext); +} + +//------------------------------------------------------------------------------ + +void DocumentFocusListener::attachRecursive( + const Reference< XAccessible >& xAccessible, + const Reference< XAccessibleContext >& xContext +) throw (IndexOutOfBoundsException, RuntimeException) +{ + if( xContext.is() ) + { + Reference< XAccessibleStateSet > xStateSet = xContext->getAccessibleStateSet(); + + if( xStateSet.is() ) + attachRecursive(xAccessible, xContext, xStateSet); + } +} + +//------------------------------------------------------------------------------ + +void DocumentFocusListener::attachRecursive( + const Reference< XAccessible >& xAccessible, + const Reference< XAccessibleContext >& xContext, + const Reference< XAccessibleStateSet >& xStateSet +) throw (IndexOutOfBoundsException,RuntimeException) +{ + if( xStateSet->contains(AccessibleStateType::FOCUSED ) ) + m_aFocusTracker.setFocusedObject( xAccessible ); + + Reference< XAccessibleEventBroadcaster > xBroadcaster = + Reference< XAccessibleEventBroadcaster >(xContext, UNO_QUERY); + + // If not already done, add the broadcaster to the list and attach as listener. + if( xBroadcaster.is() && m_aRefList.insert(xBroadcaster).second ) + { + xBroadcaster->addEventListener(static_cast< XAccessibleEventListener *>(this)); + + if( ! xStateSet->contains(AccessibleStateType::MANAGES_DESCENDANTS ) ) + { + sal_Int32 n, nmax = xContext->getAccessibleChildCount(); + for( n = 0; n < nmax; n++ ) + { + Reference< XAccessible > xChild( xContext->getAccessibleChild( n ) ); + + if( xChild.is() ) + attachRecursive(xChild); + } + } + } +} + +//------------------------------------------------------------------------------ + +void DocumentFocusListener::detachRecursive(const Reference< XAccessible >& xAccessible) + throw (IndexOutOfBoundsException, RuntimeException) +{ + Reference< XAccessibleContext > xContext = xAccessible->getAccessibleContext(); + + if( xContext.is() ) + detachRecursive(xAccessible, xContext); +} + +//------------------------------------------------------------------------------ + +void DocumentFocusListener::detachRecursive( + const Reference< XAccessible >& xAccessible, + const Reference< XAccessibleContext >& xContext +) throw (IndexOutOfBoundsException, RuntimeException) +{ + Reference< XAccessibleStateSet > xStateSet = xContext->getAccessibleStateSet(); + + if( xStateSet.is() ) + detachRecursive(xAccessible, xContext, xStateSet); +} + +//------------------------------------------------------------------------------ + +void DocumentFocusListener::detachRecursive( + const Reference< XAccessible >&, + const Reference< XAccessibleContext >& xContext, + const Reference< XAccessibleStateSet >& xStateSet +) throw (IndexOutOfBoundsException, RuntimeException) +{ + Reference< XAccessibleEventBroadcaster > xBroadcaster = + Reference< XAccessibleEventBroadcaster >(xContext, UNO_QUERY); + + if( xBroadcaster.is() && 0 < m_aRefList.erase(xBroadcaster) ) + { + xBroadcaster->removeEventListener(static_cast< XAccessibleEventListener *>(this)); + + if( ! xStateSet->contains(AccessibleStateType::MANAGES_DESCENDANTS ) ) + { + sal_Int32 n, nmax = xContext->getAccessibleChildCount(); + for( n = 0; n < nmax; n++ ) + { + Reference< XAccessible > xChild( xContext->getAccessibleChild( n ) ); + + if( xChild.is() ) + detachRecursive(xChild); + } + } + } +} |