| /****************************************************************************** |
| * Copyright (c) 2008 Oracle |
| * 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: |
| * Konstantin Komissarchik - initial implementation and ongoing maintenance |
| ******************************************************************************/ |
| |
| package org.eclipse.wst.common.project.facet.core.util; |
| |
| import org.eclipse.wst.common.project.facet.core.util.IFilter.IFilterEvent.Type; |
| import org.eclipse.wst.common.project.facet.core.util.internal.AbstractListenerRegistry; |
| |
| /** |
| * @since 3.0 |
| * @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a> |
| */ |
| |
| public abstract class AbstractFilter<T> |
| |
| implements IFilter<T> |
| |
| { |
| private FilterListenerRegistry<T> listeners = new FilterListenerRegistry<T>(); |
| |
| public void addListener( final IFilterListener<T> listener, |
| final IFilterEvent.Type... types ) |
| { |
| this.listeners.addListener( listener, types ); |
| } |
| |
| public void removeListener( final IFilterListener<T> listener ) |
| { |
| this.listeners.removeListener( listener ); |
| } |
| |
| protected void notifyListeners( final IFilterEvent<T> event ) |
| { |
| this.listeners.notifyListeners( event.getType(), event ); |
| } |
| |
| private static final class FilterListenerRegistry<T> |
| |
| extends AbstractListenerRegistry<Type,IFilterEvent<T>,IFilterListener<T>> |
| |
| { |
| public FilterListenerRegistry() |
| { |
| super( Type.class ); |
| } |
| |
| @Override |
| protected void notifyListener( final IFilterListener<T> listener, |
| final IFilterEvent<T> event ) |
| { |
| listener.handleEvent( event ); |
| } |
| } |
| |
| } |