content: /*
   * Copyright (C) 2014 The Android Open Source Project
   *
   * 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 com.android.server.notification;
  
  import android.util.Slog;
  
  import java.util.Comparator;
  
  /**
   * Sorts notifications by their global sort key.
   */
  public class GlobalSortKeyComparator implements Comparator<NotificationRecord> {
      private final static String TAG = "GlobalSortComp";
  
      @Override
      public int compare(NotificationRecord left, NotificationRecord right) {
          if (left.getGlobalSortKey() == null) {
              Slog.wtf(TAG, "Missing left global sort key: " + left);
              return 1;
          }
          if (right.getGlobalSortKey() == null) {
              Slog.wtf(TAG, "Missing right global sort key: " + right);
              return  -1;
          }
          return left.getGlobalSortKey().compareTo(right.getGlobalSortKey());
      }
  }
  