/* Copyright (c) 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.wave.api.event;
import com.google.wave.api.Wavelet;
import com.google.wave.api.impl.EventMessageBundle;
import java.util.ArrayList;
import java.util.List;
/**
* Event triggered when contributors are added and/or removed from a blip.
*/
public class BlipContributorsChangedEvent extends AbstractEvent {
/** The newly added contributors. */
private final List<String> contributorsAdded;
/** The removed contributors. */
private final List<String> contributorsRemoved;
/**
* Constructor.
*
* @param wavelet the wavelet where this event occurred.
* @param bundle the message bundle this event belongs to.
* @param modifiedBy the id of the participant that triggered this event.
* @param timestamp the timestamp of this event.
* @param blipId the id of the blip in which the the contributors were added
* and/or removed from.
* @param contributorsAdded the added contributors.
* @param contributorsRemoved the removed contributors.
*/
public BlipContributorsChangedEvent(Wavelet wavelet, EventMessageBundle bundle,
String modifiedBy, Long timestamp, String blipId, List<String> contributorsAdded,
List<String> contributorsRemoved) {
super(EventType.BLIP_CONTRIBUTORS_CHANGED, wavelet, bundle, modifiedBy, timestamp, blipId);
this.contributorsAdded = new ArrayList<String>(contributorsAdded);
this.contributorsRemoved = new ArrayList<String>(contributorsRemoved);
}
/**
* Constructor for deserialization.
*/
BlipContributorsChangedEvent() {
this.contributorsAdded = null;
this.contributorsRemoved = null;
}
/**
* Returns a list of the new contributors.
*
* @return the added contributors.
*/
public List<String> getContributorsAdded() {
return contributorsAdded;
}
/**
* Returns a list of the removed contributors.
*
* @return the removed contributors.
*/
public List<String> getContributorsRemoved() {
return contributorsRemoved;
}
/**
* Helper method for type conversion.
*
* @return the concrete type of this event, or {@code null} if it is of a
* different event type.
*/
public static BlipContributorsChangedEvent as(Event event) {
if (!(event instanceof BlipContributorsChangedEvent)) {
return null;
}
return BlipContributorsChangedEvent.class.cast(event);
}
}