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/*
* Copyright (c) 2007, 2011, 2012, 2015 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.container;
/**
* A callback interface for visiting {@link IContainerDelta container deltas}.
*
* @see IContainerEvent#accept(IContainerEventVisitor)
* @author Eike Stepper
* @apiviz.exclude
*/
public interface IContainerEventVisitor<E>
{
public void added(E element);
public void removed(E element);
/**
* An extension interface for {@link IContainerEventVisitor container event visitors} that can {@link #filter(Object)
* filter} deltas from being visited.
*
* @see IContainerEvent#accept(IContainerEventVisitor)
* @author Eike Stepper
* @apiviz.exclude
*/
public interface Filtered<E> extends IContainerEventVisitor<E>
{
public boolean filter(E element);
}
}
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