001/*
002 * (C) Copyright 2006-2016 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     tiry
018 */
019package org.nuxeo.ecm.core.event.pipe.dispatch;
020
021import java.util.ArrayList;
022import java.util.List;
023
024/**
025 * Simple stacking descriptor registry
026 *
027 * @since 8.4
028 */
029public class EventDispatcherRegistry {
030
031    protected List<EventDispatcherDescriptor> contribs = new ArrayList<>();
032
033    public void addContrib(EventDispatcherDescriptor contrib) {
034        contribs.add(contrib);
035    }
036
037    public void removeContrib(EventDispatcherDescriptor contrib) {
038        contribs.removeIf(descriptor -> descriptor.getName().equals(contrib.getName()));
039    }
040
041    public EventDispatcherDescriptor getDispatcherDescriptor() {
042        return contribs.isEmpty() ? null : contribs.get(contribs.size() - 1);
043    }
044}