1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.notification; 18 19 import android.content.Context; 20 21 /** 22 * Extracts signals that will be useful to the {@link NotificationComparator} and caches them 23 * on the {@link NotificationRecord} object. These annotations will 24 * not be passed on to {@link android.service.notification.NotificationListenerService}s. 25 */ 26 public interface NotificationSignalExtractor { 27 28 /** One-time initialization. */ initialize(Context context, NotificationUsageStats usageStats)29 public void initialize(Context context, NotificationUsageStats usageStats); 30 31 /** 32 * Called once per notification that is posted or updated. 33 * 34 * @return null if the work is done, or a future if there is more to do. The 35 * {@link RankingReconsideration} will be run on a worker thread, and if notifications 36 * are re-ordered by that execution, the {@link NotificationManagerService} may send order 37 * update events to the {@link android.service.notification.NotificationListenerService}s. 38 */ process(NotificationRecord notification)39 public RankingReconsideration process(NotificationRecord notification); 40 41 /** 42 * Called whenever the {@link RankingConfig} changes. 43 * 44 * @param config information about which signals are important. 45 */ setConfig(RankingConfig config)46 void setConfig(RankingConfig config); 47 } 48