/*
 * Copyright (c) 2003-2011, KNOPFLERFISH project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials
 *   provided with the distribution.
 *
 * - Neither the name of the KNOPFLERFISH project nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.knopflerfish.framework;

import java.util.EventListener;

class ListenerEntry {
  final BundleContextImpl bc;
  final EventListener listener;
  boolean bRemoved = false;

  ListenerEntry(BundleContextImpl bc, EventListener l) {
    this.bc = bc;
    listener = l;
  }

  /**
   * Listener are considered equal if bc and listener are equal, this so that
   * the HashSet of listeners should work.
   */
  public boolean equals(Object o) {
    if (o instanceof ListenerEntry) {
      return bc == ((ListenerEntry) o).bc && listener == ((ListenerEntry) o).listener;
    }
    return false;
  }

  /**
   * Only use listener as hash value, since it is almost always unique.
   */
  public int hashCode() {
    return listener.hashCode();
  }

  /**
   */
  void setRemoved(boolean b) {
    this.bRemoved = b;
  }

  /**
   */
  public boolean isRemoved() {
    return bRemoved;
  }

}
