001/*
002 * (C) Copyright 2006-2012 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 *     Thomas Roger <[email protected]>
018 */
019
020package org.nuxeo.ecm.activity;
021
022import java.util.ArrayList;
023import java.util.HashMap;
024import java.util.List;
025import java.util.Map;
026
027import org.nuxeo.runtime.model.ContributionFragmentRegistry;
028
029/**
030 * Registry for activity link builders, handling merge of registered {@link ActivityLinkBuilderDescriptor} elements.
031 *
032 * @author <a href="mailto:[email protected]">Thomas Roger</a>
033 * @since 5.6
034 */
035public class ActivityLinkBuilderRegistry extends ContributionFragmentRegistry<ActivityLinkBuilderDescriptor> {
036
037    protected Map<String, ActivityLinkBuilder> activityLinkBuilders = new HashMap<String, ActivityLinkBuilder>();
038
039    protected List<String> activityLinkBuildersIds = new ArrayList<String>();
040
041    public ActivityLinkBuilder getDefaultActivityLinkBuilder() {
042        if (activityLinkBuildersIds.isEmpty()) {
043            throw new IllegalStateException("No default ActivityLinkBuilder configured");
044        }
045        return activityLinkBuilders.get(activityLinkBuildersIds.get(0));
046    }
047
048    public ActivityLinkBuilder get(String name) {
049        return activityLinkBuilders.get(name);
050    }
051
052    @Override
053    public String getContributionId(ActivityLinkBuilderDescriptor contrib) {
054        return contrib.getName();
055    }
056
057    @Override
058    public void contributionUpdated(String id, ActivityLinkBuilderDescriptor contrib,
059            ActivityLinkBuilderDescriptor newOrigContrib) {
060        activityLinkBuilders.put(id, contrib.getActivityLinkBuilder());
061        if (contrib.isDefault()) {
062            activityLinkBuildersIds.add(0, id);
063        }
064    }
065
066    @Override
067    public void contributionRemoved(String id, ActivityLinkBuilderDescriptor origContrib) {
068        activityLinkBuilders.remove(id);
069        activityLinkBuildersIds.remove(id);
070    }
071
072    @Override
073    public ActivityLinkBuilderDescriptor clone(ActivityLinkBuilderDescriptor orig) {
074        return orig.clone();
075    }
076
077    @Override
078    public void merge(ActivityLinkBuilderDescriptor src, ActivityLinkBuilderDescriptor dst) {
079        Class<? extends ActivityLinkBuilder> clazz = src.getActivityLinkBuilderClass();
080        if (clazz != null) {
081            dst.setActivityLinkBuilderClass(clazz);
082        }
083        boolean isDefault = src.isDefault();
084        if (isDefault != dst.isDefault()) {
085            dst.setDefault(isDefault);
086        }
087        boolean enabled = src.isEnabled();
088        if (enabled != dst.isEnabled()) {
089            dst.setEnabled(enabled);
090        }
091    }
092
093}