ObservableConversationView.java example

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WaveInCloud-master
/**
 * Copyright 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 org.waveprotocol.wave.model.conversation;

import org.waveprotocol.wave.model.wave.SourcesEvents;

import java.util.Collection;


/**
 * Extends ConversationView to provide events when conversations come into view.
 *
 * @author anorth@google.com (Alex North)
 */
public interface ObservableConversationView extends ConversationView,
    SourcesEvents<ObservableConversationView.Listener> {
  interface Listener {
    /**
     * Notifies this listener that a conversation has been added to the view.
     */
    void onConversationAdded(ObservableConversation conversation);

    /**
     * This conversation has been deleted and should not be used further.
     */
    void onConversationRemoved(ObservableConversation conversation);
  }

  // Covariant specialisations.

  @Override
  Collection<? extends ObservableConversation> getConversations();

  @Override
  ObservableConversation getRoot();

  @Override
  ObservableConversation createRoot();

  @Override
  ObservableConversation getConversation(String id);

  @Override
  ObservableConversation createConversation();
}