content: /**
   * Radius Networks, Inc.
   * http://www.radiusnetworks.com
   *
   * @author David G. Young
   *
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.altbeacon.beacon;
  
  /**
   * This interface is implemented by classes that receive beacon monitoring notifications
   *
   * @see BeaconManager#setMonitorNotifier(MonitorNotifier notifier)
   * @see BeaconManager#startMonitoringBeaconsInRegion(Region region)
   * @see Region
   *
   * @author David G. Young
   */
  public interface MonitorNotifier {
      /**
       * Indicates the Android device is inside the Region of beacons
       */
      public static final int INSIDE = 1;
      /**
       * Indicates the Android device is outside the Region of beacons
       */
      public static final int OUTSIDE = 0;
  
      /**
       * Called when at least one beacon in a <code>Region</code> is visible.
       * @param region a Region that defines the criteria of beacons to look for
       */
      public void didEnterRegion(Region region);
  
      /**
       * Called when no beacons in a <code>Region</code> are visible.
       * @param region a Region that defines the criteria of beacons to look for
       */
      public void didExitRegion(Region region);
  
      /**
       * Called with a state value of MonitorNotifier.INSIDE when at least one beacon in a <code>Region</code> is visible.
       * Called with a state value of MonitorNotifier.OUTSIDE when no beacons in a <code>Region</code> are visible.
       * @param state either MonitorNotifier.INSIDE or MonitorNotifier.OUTSIDE
       * @param region a Region that defines the criteria of beacons to look for
       */
      public void didDetermineStateForRegion(int state, Region region);
  }
  