19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.webkit; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Handler; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Looper; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Message; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Process; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.Log; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectabstract class WebSyncManager implements Runnable { 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // message code for sync message 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int SYNC_MESSAGE = 101; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // time delay in millisec for a sync (now) message 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static int SYNC_NOW_INTERVAL = 100; // 100 millisec 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // time delay in millisec for a sync (later) message 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static int SYNC_LATER_INTERVAL = 5 * 60 * 1000; // 5 minutes 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // thread for syncing 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Thread mSyncThread; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Name of thread 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private String mThreadName; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // handler of the sync thread 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected Handler mHandler; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // database for the persistent storage 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected WebViewDatabase mDataBase; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Ref count for calls to start/stop sync 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mStartSyncRefCount; 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // log tag 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected static final String LOGTAG = "websync"; 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class SyncHandler extends Handler { 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void handleMessage(Message msg) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (msg.what == SYNC_MESSAGE) { 502e5c150e746647a1ce5c10e1708debbf06c45ea7Derek Sollenberger if (DebugFlags.WEB_SYNC_MANAGER) { 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(LOGTAG, "*** WebSyncManager sync ***"); 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project syncFromRamToFlash(); 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // send a delayed message to request sync later 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Message newmsg = obtainMessage(SYNC_MESSAGE); 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sendMessageDelayed(newmsg, SYNC_LATER_INTERVAL); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected WebSyncManager(Context context, String name) { 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mThreadName = name; 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (context != null) { 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataBase = WebViewDatabase.getInstance(context); 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncThread = new Thread(this); 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncThread.setName(mThreadName); 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncThread.start(); 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException( 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "WebSyncManager can't be created without context"); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected Object clone() throws CloneNotSupportedException { 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new CloneNotSupportedException("doesn't implement Cloneable"); 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // prepare Looper for sync handler 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Looper.prepare(); 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler = new SyncHandler(); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project onSyncInit(); 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // lower the priority after onSyncInit() is done 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Message msg = mHandler.obtainMessage(SYNC_MESSAGE); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.sendMessageDelayed(msg, SYNC_LATER_INTERVAL); 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Looper.loop(); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * sync() forces sync manager to sync now 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void sync() { 972e5c150e746647a1ce5c10e1708debbf06c45ea7Derek Sollenberger if (DebugFlags.WEB_SYNC_MANAGER) { 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(LOGTAG, "*** WebSyncManager sync ***"); 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHandler == null) { 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.removeMessages(SYNC_MESSAGE); 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Message msg = mHandler.obtainMessage(SYNC_MESSAGE); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.sendMessageDelayed(msg, SYNC_NOW_INTERVAL); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * resetSync() resets sync manager's timer 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void resetSync() { 1122e5c150e746647a1ce5c10e1708debbf06c45ea7Derek Sollenberger if (DebugFlags.WEB_SYNC_MANAGER) { 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(LOGTAG, "*** WebSyncManager resetSync ***"); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHandler == null) { 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.removeMessages(SYNC_MESSAGE); 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Message msg = mHandler.obtainMessage(SYNC_MESSAGE); 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.sendMessageDelayed(msg, SYNC_LATER_INTERVAL); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * startSync() requests sync manager to start sync 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void startSync() { 1272e5c150e746647a1ce5c10e1708debbf06c45ea7Derek Sollenberger if (DebugFlags.WEB_SYNC_MANAGER) { 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(LOGTAG, "*** WebSyncManager startSync ***, Ref count:" + 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStartSyncRefCount); 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHandler == null) { 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (++mStartSyncRefCount == 1) { 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Message msg = mHandler.obtainMessage(SYNC_MESSAGE); 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.sendMessageDelayed(msg, SYNC_LATER_INTERVAL); 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * stopSync() requests sync manager to stop sync. remove any SYNC_MESSAGE in 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the queue to break the sync loop 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void stopSync() { 1452e5c150e746647a1ce5c10e1708debbf06c45ea7Derek Sollenberger if (DebugFlags.WEB_SYNC_MANAGER) { 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(LOGTAG, "*** WebSyncManager stopSync ***, Ref count:" + 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStartSyncRefCount); 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHandler == null) { 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (--mStartSyncRefCount == 0) { 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.removeMessages(SYNC_MESSAGE); 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onSyncInit() { 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project abstract void syncFromRamToFlash(); 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 162