/**
 * Copyright 2010 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.client.gadget.renderer;

import org.waveprotocol.wave.model.conversation.ConversationBlip;
import org.waveprotocol.wave.model.conversation.ConversationListenerImpl;
import org.waveprotocol.wave.model.conversation.ObservableConversationBlip;
import org.waveprotocol.wave.model.wave.ParticipantId;

/**
 * Gadget wavelet listener adapter class to relay participant/contributor event
 * notifications from the wavelet listener interface to the gadget listener.
 *
 */
public class WaveletListenerAdapter extends ConversationListenerImpl {

  private final ConversationBlip myBlip;
  private final GadgetWaveletListener listener;

  /**
   * Constructs the listener adapter.
   *
   * @param blip listener's blip
   * @param listener the listener interface
   */
  public WaveletListenerAdapter(ConversationBlip blip, GadgetWaveletListener listener) {
    this.myBlip = blip;
    this.listener = listener;
  }

  @Override
  public void onBlipContributorAdded(ObservableConversationBlip blip, ParticipantId contributor) {
    if (blip == myBlip) {
      listener.onBlipContributorAdded(contributor);
    }
  }

  @Override
  public void onBlipContributorRemoved(ObservableConversationBlip blip, ParticipantId contributor) {
    if (blip == myBlip) {
      listener.onBlipContributorRemoved(contributor);
    }
  }

  @Override
  public void onParticipantAdded(ParticipantId participant) {
    listener.onParticipantAdded(participant);
  }

  @Override
  public void onParticipantRemoved(ParticipantId participant) {
    listener.onParticipantRemoved(participant);
  }
}