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/*****************************************************************************
* Copyright (c) 2014 CEA LIST and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.nattable.utils;
import org.eclipse.papyrus.infra.nattable.Activator;
import org.eclipse.papyrus.infra.nattable.model.nattable.nattableaxis.IAxis;
import org.eclipse.papyrus.infra.nattable.model.nattable.nattableaxis.ITreeItemAxis;
import ca.odell.glazedlists.EventList;
/**
* @author Vincent Lorenzo
* This class provides methods to manipulate properly EventList calling appropriate lock and unlock methods
*/
public class EventListHelper {
private EventListHelper() {
// to prevent instanciation
}
/**
*
* @param list
* an event list to edit
* @param object
* an object to add to the event list
*/
public static final void addToEventList(final EventList<Object> list, final Object object) {
list.getReadWriteLock().readLock().lock();
try {
if (list.contains(object)) {
return;
}
} catch (Exception e1) {
Activator.log.error(e1);
} finally {
list.getReadWriteLock().readLock().unlock();
}
int parentIndex = -1;
// 1. get the index to add the element
if (object instanceof ITreeItemAxis) {
IAxis parent = ((ITreeItemAxis) object).getParent();
if (parent != null) {
try {
list.getReadWriteLock().readLock().lock();
parentIndex = list.indexOf(parent);
} catch (Exception e) {
Activator.log.error(e);
} finally {
list.getReadWriteLock().readLock().unlock();
}
}
}
list.getReadWriteLock().writeLock().lock();
try {
if (parentIndex != -1) {
list.add(parentIndex + 1, object);
} else {
list.add(object);
}
} catch (Exception e) {
Activator.log.error(e);
} finally {
list.getReadWriteLock().writeLock().unlock();
}
}
/**
*
* @param list
* an event list to edit
* @param object
* an object to remove from the list
*/
public static final void removeFromEventList(final EventList<Object> list, final Object object) {
list.getReadWriteLock().readLock().lock();
try {
if (!list.contains(object)) {
return;
}
} catch (Exception e1) {
Activator.log.error(e1);
} finally {
list.getReadWriteLock().readLock().unlock();
}
list.getReadWriteLock().writeLock().lock();
try {
if (object instanceof ITreeItemAxis) {
list.remove(object);
} else {
list.remove(object);
}
} catch (Exception e) {
Activator.log.error(e);
} finally {
list.getReadWriteLock().writeLock().unlock();
}
}
}
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