/**
* Copyright 2008 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 org.waveprotocol.wave.model.wave.data.impl;
import org.waveprotocol.wave.model.util.CopyOnWriteSet;
import org.waveprotocol.wave.model.version.HashedVersion;
import org.waveprotocol.wave.model.wave.ParticipantId;
import org.waveprotocol.wave.model.wave.data.BlipData;
import org.waveprotocol.wave.model.wave.data.WaveletData;
import org.waveprotocol.wave.model.wave.data.WaveletDataListener;
/**
* Manages a set of wavelet data listeners, forwarding each event on to a set
* of client listeners.
*
* @author anorth@google.com (Alex North)
*/
public class WaveletDataListenerManager implements WaveletDataListener {
/** Set of listeners for change events. */
private final CopyOnWriteSet<WaveletDataListener> listeners = CopyOnWriteSet.create();
@Override
public void onBlipDataAdded(WaveletData waveletData, BlipData blip) {
for (WaveletDataListener l : listeners) {
l.onBlipDataAdded(waveletData, blip);
}
}
@Override
public void onBlipDataTimestampModified(
WaveletData waveletData, BlipData blip, long oldTime, long newTime) {
for (WaveletDataListener l : listeners) {
l.onBlipDataTimestampModified(waveletData, blip, oldTime, newTime);
}
}
@Override
public void onBlipDataVersionModified(
WaveletData waveletData, BlipData blip, long oldVersion, long newVersion) {
for (WaveletDataListener l : listeners) {
l.onBlipDataVersionModified(waveletData, blip, oldVersion, newVersion);
}
}
@Override
public void onBlipDataContributorAdded(
WaveletData waveletData, BlipData blip, ParticipantId contributor) {
for (WaveletDataListener l : listeners) {
l.onBlipDataContributorAdded(waveletData, blip, contributor);
}
}
@Override
public void onBlipDataContributorRemoved(
WaveletData waveletData, BlipData blip, ParticipantId contributor) {
for (WaveletDataListener l : listeners) {
l.onBlipDataContributorRemoved(waveletData, blip, contributor);
}
}
@Override
public void onBlipDataSubmitted(WaveletData waveletData, BlipData blip) {
for (WaveletDataListener l : listeners) {
l.onBlipDataSubmitted(waveletData, blip);
}
}
@Override
public void onLastModifiedTimeChanged(WaveletData waveletData, long oldTime, long newTime) {
for (WaveletDataListener l : listeners) {
l.onLastModifiedTimeChanged(waveletData, oldTime, newTime);
}
}
@Override
public void onVersionChanged(WaveletData waveletData, long oldVersion, long newVersion) {
for (WaveletDataListener l : listeners) {
l.onVersionChanged(waveletData, oldVersion, newVersion);
}
}
@Override
public void onHashedVersionChanged(WaveletData waveletData, HashedVersion oldHashedVersion,
HashedVersion newHashedVersion) {
for (WaveletDataListener l : listeners) {
l.onHashedVersionChanged(waveletData, oldHashedVersion, newHashedVersion);
}
}
@Override
public void onParticipantAdded(WaveletData waveletData, ParticipantId participant) {
for (WaveletDataListener l : listeners) {
l.onParticipantAdded(waveletData, participant);
}
}
@Override
public void onParticipantRemoved(WaveletData waveletData, ParticipantId participant) {
for (WaveletDataListener l : listeners) {
l.onParticipantRemoved(waveletData, participant);
}
}
@Deprecated
@Override
public void onRemoteBlipDataContentModified(WaveletData waveletData, BlipData blip) {
for (WaveletDataListener l : listeners) {
l.onRemoteBlipDataContentModified(waveletData, blip);
}
}
/**
* Adds a new client listener to receive events received here. Adding the
* same listener twice has no effect.
*
* @param listener a wavelet data listener
*/
public void addListener(WaveletDataListener listener) {
listeners.add(listener);
}
/**
* Removes a client listener, so it will no longer receive events. Removing
* an unregistered listener has no effect.
*
* @param listener wavelet data listener to remove
*/
public void removeListener(WaveletDataListener listener) {
listeners.remove(listener);
}
}