1 /* 2 * Copyright (C) 2013 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.inputmethod.latin.personalization; 18 19 import android.app.AlarmManager; 20 import android.app.PendingIntent; 21 import android.content.BroadcastReceiver; 22 import android.content.Context; 23 import android.content.Intent; 24 25 import java.util.concurrent.TimeUnit; 26 27 /** 28 * Broadcast receiver for periodically updating decaying dictionaries. 29 */ 30 public class DictionaryDecayBroadcastReciever extends BroadcastReceiver { 31 /** 32 * The root domain for the personalization. 33 */ 34 private static final String PERSONALIZATION_DOMAIN = 35 "com.android.inputmethod.latin.personalization"; 36 37 /** 38 * The action of the intent to tell the time to decay dictionaries. 39 */ 40 private static final String DICTIONARY_DECAY_INTENT_ACTION = 41 PERSONALIZATION_DOMAIN + ".DICT_DECAY"; 42 43 /** 44 * Interval to update for decaying dictionaries. 45 */ 46 /* package */ static final long DICTIONARY_DECAY_INTERVAL = TimeUnit.MINUTES.toMillis(60); 47 setUpIntervalAlarmForDictionaryDecaying(Context context)48 public static void setUpIntervalAlarmForDictionaryDecaying(Context context) { 49 AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); 50 final Intent updateIntent = new Intent(DICTIONARY_DECAY_INTENT_ACTION); 51 updateIntent.setClass(context, DictionaryDecayBroadcastReciever.class); 52 final long alarmTime = System.currentTimeMillis() + DICTIONARY_DECAY_INTERVAL; 53 final PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0 /* requestCode */, 54 updateIntent, PendingIntent.FLAG_CANCEL_CURRENT); 55 if (null != alarmManager) alarmManager.setInexactRepeating(AlarmManager.RTC, 56 alarmTime, DICTIONARY_DECAY_INTERVAL, pendingIntent); 57 } 58 59 @Override onReceive(final Context context, final Intent intent)60 public void onReceive(final Context context, final Intent intent) { 61 final String action = intent.getAction(); 62 if (action.equals(DICTIONARY_DECAY_INTENT_ACTION)) { 63 PersonalizationHelper.runGCOnAllOpenedUserHistoryDictionaries(); 64 PersonalizationHelper.runGCOnAllOpenedPersonalizationDictionaries(); 65 } 66 } 67 } 68