content: /*
   * Copyright (C) 2017 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.launcher3.dot;
  
  import com.android.launcher3.notification.NotificationInfo;
  import com.android.launcher3.notification.NotificationKeyData;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Contains data to be used for a notification dot.
   */
  public class DotInfo {
  
      public static final int MAX_COUNT = 999;
  
      /**
       * The keys of the notifications that this dot represents. These keys can later be
       * used to retrieve {@link NotificationInfo}'s.
       */
      private final List<NotificationKeyData> mNotificationKeys = new ArrayList<>();
  
      /**
       * The current sum of the counts in {@link #mNotificationKeys},
       * updated whenever a key is added or removed.
       */
      private int mTotalCount;
  
      /**
       * Returns whether the notification was added or its count changed.
       */
      public boolean addOrUpdateNotificationKey(NotificationKeyData notificationKey) {
          int indexOfPrevKey = mNotificationKeys.indexOf(notificationKey);
          NotificationKeyData prevKey = indexOfPrevKey == -1 ? null
                  : mNotificationKeys.get(indexOfPrevKey);
          if (prevKey != null) {
              if (prevKey.count == notificationKey.count) {
                  return false;
              }
              // Notification was updated with a new count.
              mTotalCount -= prevKey.count;
              mTotalCount += notificationKey.count;
              prevKey.count = notificationKey.count;
              return true;
          }
          boolean added = mNotificationKeys.add(notificationKey);
          if (added) {
              mTotalCount += notificationKey.count;
          }
          return added;
      }
  
      /**
       * Returns whether the notification was removed (false if it didn't exist).
       */
      public boolean removeNotificationKey(NotificationKeyData notificationKey) {
          boolean removed = mNotificationKeys.remove(notificationKey);
          if (removed) {
              mTotalCount -= notificationKey.count;
          }
          return removed;
      }
  
      public List<NotificationKeyData> getNotificationKeys() {
          return mNotificationKeys;
      }
  
      public int getNotificationCount() {
          return Math.min(mTotalCount, MAX_COUNT);
      }
  }
  