/**
 * 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.wavepanel.render;

import org.waveprotocol.wave.client.wavepanel.view.dom.full.BlipQueueRenderer.PagingHandler;
import org.waveprotocol.wave.model.conversation.ConversationBlip;

/**
 * Fans out how to page content in/out to a set of handlers.
 *
 */
public final class PagingHandlerProxy implements PagingHandler {

  private final PagingHandler[] handlers;

  PagingHandlerProxy(PagingHandler... handlers) {
    this.handlers = handlers;
  }

  /**
   * Creates a paging proxy.
   */
  public static PagingHandlerProxy create(PagingHandler... handlers) {
    return new PagingHandlerProxy(handlers);
  }

  @Override
  public void pageIn(ConversationBlip blip) {
    for (PagingHandler handler : handlers) {
      handler.pageIn(blip);
    }
  }

  @Override
  public void pageOut(ConversationBlip blip) {
    for (PagingHandler handler : handlers) {
      handler.pageOut(blip);
    }
  }
}