| /* |
| * Copyright (C) 2011 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.appwidget; |
| |
| import android.app.AlarmManager; |
| import android.app.AppGlobals; |
| import android.app.PendingIntent; |
| import android.appwidget.AppWidgetManager; |
| import android.appwidget.AppWidgetProviderInfo; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.Intent.FilterComparison; |
| import android.content.ServiceConnection; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.ServiceInfo; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.content.res.XmlResourceParser; |
| import android.graphics.Point; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.Environment; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.util.AtomicFile; |
| import android.util.AttributeSet; |
| import android.util.MutableInt; |
| import android.util.Pair; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| import android.util.TypedValue; |
| import android.util.Xml; |
| import android.view.Display; |
| import android.view.WindowManager; |
| import android.widget.RemoteViews; |
| |
| import com.android.internal.appwidget.IAppWidgetHost; |
| import com.android.internal.util.FastXmlSerializer; |
| import com.android.internal.widget.IRemoteViewsAdapterConnection; |
| import com.android.internal.widget.IRemoteViewsFactory; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| |
| class AppWidgetServiceImpl { |
| |
| private static final String KEYGUARD_HOST_PACKAGE = "com.android.keyguard"; |
| private static final int KEYGUARD_HOST_ID = 0x4b455947; |
| private static final String TAG = "AppWidgetServiceImpl"; |
| private static final String SETTINGS_FILENAME = "appwidgets.xml"; |
| private static final int MIN_UPDATE_PERIOD = 30 * 60 * 1000; // 30 minutes |
| private static final int CURRENT_VERSION = 1; // Bump if the stored widgets need to be upgraded. |
| private static final int WIDGET_STATE_VERSION = 1; // version of backed-up widget state |
| |
| private static boolean DBG = true; |
| private static boolean DEBUG_BACKUP = DBG || true; |
| |
| /* |
| * When identifying a Host or Provider based on the calling process, use the uid field. When |
| * identifying a Host or Provider based on a package manager broadcast, use the package given. |
| */ |
| |
| static class Provider { |
| int uid; |
| AppWidgetProviderInfo info; |
| ArrayList<AppWidgetId> instances = new ArrayList<AppWidgetId>(); |
| PendingIntent broadcast; |
| boolean zombie; // if we're in safe mode, don't prune this just because nobody references it |
| |
| int tag; // for use while saving state (the index) |
| |
| // is there an instance of this provider hosted by the given app? |
| public boolean isHostedBy(String packageName) { |
| final int N = instances.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = instances.get(i); |
| if (packageName.equals(id.host.packageName)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return "Provider{" + ((info == null) ? "null" : info.provider) |
| + (zombie ? " Z" : "") |
| + '}'; |
| } |
| } |
| |
| static class Host { |
| int uid; |
| int hostId; |
| String packageName; |
| ArrayList<AppWidgetId> instances = new ArrayList<AppWidgetId>(); |
| IAppWidgetHost callbacks; |
| boolean zombie; // if we're in safe mode, don't prune this just because nobody references it |
| |
| int tag; // for use while saving state (the index) |
| |
| boolean uidMatches(int callingUid) { |
| if (UserHandle.getAppId(callingUid) == Process.myUid()) { |
| // For a host that's in the system process, ignore the user id |
| return UserHandle.isSameApp(this.uid, callingUid); |
| } else { |
| return this.uid == callingUid; |
| } |
| } |
| |
| boolean hostsPackage(String pkg) { |
| final int N = instances.size(); |
| for (int i = 0; i < N; i++) { |
| Provider p = instances.get(i).provider; |
| if (p != null && p.info != null && pkg.equals(p.info.provider.getPackageName())) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return "Host{" + packageName + ":" + hostId + '}'; |
| } |
| } |
| |
| static class AppWidgetId { |
| int appWidgetId; |
| int restoredId; // tracking & remapping any restored state |
| Provider provider; |
| RemoteViews views; |
| Bundle options; |
| Host host; |
| |
| @Override |
| public String toString() { |
| return "AppWidgetId{" + appWidgetId + ':' + host + ':' + provider + '}'; |
| } |
| } |
| |
| AppWidgetId findRestoredWidgetLocked(int restoredId, Host host, Provider p) { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "Find restored widget: id=" + restoredId |
| + " host=" + host + " provider=" + p); |
| } |
| |
| if (p == null || host == null) { |
| return null; |
| } |
| |
| final int N = mAppWidgetIds.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId widget = mAppWidgetIds.get(i); |
| if (widget.restoredId == restoredId |
| && widget.host.hostId == host.hostId |
| && widget.host.packageName.equals(host.packageName) |
| && widget.provider.info.provider.equals(p.info.provider)) { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, " Found at " + i + " : " + widget); |
| } |
| return widget; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Acts as a proxy between the ServiceConnection and the RemoteViewsAdapterConnection. This |
| * needs to be a static inner class since a reference to the ServiceConnection is held globally |
| * and may lead us to leak AppWidgetService instances (if there were more than one). |
| */ |
| static class ServiceConnectionProxy implements ServiceConnection { |
| private final IBinder mConnectionCb; |
| |
| ServiceConnectionProxy(Pair<Integer, Intent.FilterComparison> key, IBinder connectionCb) { |
| mConnectionCb = connectionCb; |
| } |
| |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| final IRemoteViewsAdapterConnection cb = IRemoteViewsAdapterConnection.Stub |
| .asInterface(mConnectionCb); |
| try { |
| cb.onServiceConnected(service); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| public void onServiceDisconnected(ComponentName name) { |
| disconnect(); |
| } |
| |
| public void disconnect() { |
| final IRemoteViewsAdapterConnection cb = IRemoteViewsAdapterConnection.Stub |
| .asInterface(mConnectionCb); |
| try { |
| cb.onServiceDisconnected(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| // Manages active connections to RemoteViewsServices |
| private final HashMap<Pair<Integer, FilterComparison>, ServiceConnection> mBoundRemoteViewsServices = new HashMap<Pair<Integer, FilterComparison>, ServiceConnection>(); |
| // Manages persistent references to RemoteViewsServices from different App Widgets |
| private final HashMap<FilterComparison, HashSet<Integer>> mRemoteViewsServicesAppWidgets = new HashMap<FilterComparison, HashSet<Integer>>(); |
| |
| final Context mContext; |
| final IPackageManager mPm; |
| final AlarmManager mAlarmManager; |
| final ArrayList<Provider> mInstalledProviders = new ArrayList<Provider>(); |
| final int mUserId; |
| final boolean mHasFeature; |
| |
| Locale mLocale; |
| int mNextAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID + 1; |
| final ArrayList<AppWidgetId> mAppWidgetIds = new ArrayList<AppWidgetId>(); |
| final ArrayList<Host> mHosts = new ArrayList<Host>(); |
| // set of package names |
| final HashSet<String> mPackagesWithBindWidgetPermission = new HashSet<String>(); |
| boolean mSafeMode; |
| boolean mStateLoaded; |
| int mMaxWidgetBitmapMemory; |
| |
| // Map old (restored) widget IDs to new AppWidgetId instances. This object is used |
| // as the lock around manipulation of the overall restored-widget state, just as |
| // mAppWidgetIds is used as the lock object around all "live" widget state |
| // manipulations. Methods that must be called with this lock held are decorated |
| // with the suffix "Lr". |
| // |
| // In cases when both of those locks must be held concurrently, mRestoredWidgetIds |
| // must be acquired *first.* |
| private final SparseArray<AppWidgetId> mRestoredWidgetIds = new SparseArray<AppWidgetId>(); |
| |
| // We need to make sure to wipe the pre-restore widget state only once for |
| // a given package. Keep track of what we've done so far here; the list is |
| // cleared at the start of every system restore pass, but preserved through |
| // any install-time restore operations. |
| HashSet<String> mPrunedApps = new HashSet<String>(); |
| |
| private final Handler mSaveStateHandler; |
| |
| // These are for debugging only -- widgets are going missing in some rare instances |
| ArrayList<Provider> mDeletedProviders = new ArrayList<Provider>(); |
| ArrayList<Host> mDeletedHosts = new ArrayList<Host>(); |
| |
| AppWidgetServiceImpl(Context context, int userId, Handler saveStateHandler) { |
| mContext = context; |
| mPm = AppGlobals.getPackageManager(); |
| mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); |
| mUserId = userId; |
| mSaveStateHandler = saveStateHandler; |
| mHasFeature = context.getPackageManager().hasSystemFeature( |
| PackageManager.FEATURE_APP_WIDGETS); |
| computeMaximumWidgetBitmapMemory(); |
| } |
| |
| void computeMaximumWidgetBitmapMemory() { |
| WindowManager wm = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); |
| Display display = wm.getDefaultDisplay(); |
| Point size = new Point(); |
| display.getRealSize(size); |
| // Cap memory usage at 1.5 times the size of the display |
| // 1.5 * 4 bytes/pixel * w * h ==> 6 * w * h |
| mMaxWidgetBitmapMemory = 6 * size.x * size.y; |
| } |
| |
| public void systemReady(boolean safeMode) { |
| mSafeMode = safeMode; |
| |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| } |
| } |
| |
| private void log(String msg) { |
| Slog.i(TAG, "u=" + mUserId + ": " + msg); |
| } |
| |
| void onConfigurationChanged() { |
| if (DBG) log("Got onConfigurationChanged()"); |
| Locale revised = Locale.getDefault(); |
| if (revised == null || mLocale == null || !(revised.equals(mLocale))) { |
| mLocale = revised; |
| |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| // Note: updateProvidersForPackageLocked() may remove providers, so we must copy the |
| // list of installed providers and skip providers that we don't need to update. |
| // Also note that remove the provider does not clear the Provider component data. |
| ArrayList<Provider> installedProviders = |
| new ArrayList<Provider>(mInstalledProviders); |
| HashSet<ComponentName> removedProviders = new HashSet<ComponentName>(); |
| int N = installedProviders.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| Provider p = installedProviders.get(i); |
| ComponentName cn = p.info.provider; |
| if (!removedProviders.contains(cn)) { |
| updateProvidersForPackageLocked(cn.getPackageName(), removedProviders); |
| } |
| } |
| saveStateAsync(); |
| } |
| } |
| } |
| |
| void onBroadcastReceived(Intent intent) { |
| if (DBG) log("onBroadcast " + intent); |
| final String action = intent.getAction(); |
| boolean added = false; |
| boolean changed = false; |
| boolean providersModified = false; |
| String pkgList[] = null; |
| if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action)) { |
| pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST); |
| added = true; |
| } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) { |
| pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST); |
| added = false; |
| } else { |
| Uri uri = intent.getData(); |
| if (uri == null) { |
| return; |
| } |
| String pkgName = uri.getSchemeSpecificPart(); |
| if (pkgName == null) { |
| return; |
| } |
| pkgList = new String[] { pkgName }; |
| added = Intent.ACTION_PACKAGE_ADDED.equals(action); |
| changed = Intent.ACTION_PACKAGE_CHANGED.equals(action); |
| } |
| if (pkgList == null || pkgList.length == 0) { |
| return; |
| } |
| if (added || changed) { |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| Bundle extras = intent.getExtras(); |
| if (changed |
| || (extras != null && extras.getBoolean(Intent.EXTRA_REPLACING, false))) { |
| for (String pkgName : pkgList) { |
| // The package was just upgraded |
| providersModified |= updateProvidersForPackageLocked(pkgName, null); |
| } |
| } else { |
| // The package was just added. Fix up the providers... |
| for (String pkgName : pkgList) { |
| providersModified |= addProvidersForPackageLocked(pkgName); |
| } |
| // ...and see if these are hosts we've been awaiting |
| for (String pkg : pkgList) { |
| try { |
| int uid = getUidForPackage(pkg); |
| resolveHostUidLocked(pkg, uid); |
| } catch (NameNotFoundException e) { |
| // shouldn't happen; we just installed it! |
| } |
| } |
| } |
| saveStateAsync(); |
| } |
| } else { |
| Bundle extras = intent.getExtras(); |
| if (extras != null && extras.getBoolean(Intent.EXTRA_REPLACING, false)) { |
| // The package is being updated. We'll receive a PACKAGE_ADDED shortly. |
| } else { |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| for (String pkgName : pkgList) { |
| providersModified |= removeProvidersForPackageLocked(pkgName); |
| saveStateAsync(); |
| } |
| } |
| } |
| } |
| |
| if (providersModified) { |
| // If the set of providers has been modified, notify each active AppWidgetHost |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| notifyHostsForProvidersChangedLocked(); |
| } |
| } |
| } |
| |
| void resolveHostUidLocked(String pkg, int uid) { |
| final int N = mHosts.size(); |
| for (int i = 0; i < N; i++) { |
| Host h = mHosts.get(i); |
| if (h.uid == -1 && pkg.equals(h.packageName)) { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "host " + pkg + ":" + h.hostId + " resolved to uid " + uid); |
| } |
| h.uid = uid; |
| } |
| } |
| } |
| |
| private void dumpProvider(Provider p, int index, PrintWriter pw) { |
| AppWidgetProviderInfo info = p.info; |
| pw.print(" ["); pw.print(index); pw.print("] provider "); |
| pw.print(info.provider.flattenToShortString()); |
| pw.println(':'); |
| pw.print(" min=("); pw.print(info.minWidth); |
| pw.print("x"); pw.print(info.minHeight); |
| pw.print(") minResize=("); pw.print(info.minResizeWidth); |
| pw.print("x"); pw.print(info.minResizeHeight); |
| pw.print(") updatePeriodMillis="); |
| pw.print(info.updatePeriodMillis); |
| pw.print(" resizeMode="); |
| pw.print(info.resizeMode); |
| pw.print(info.widgetCategory); |
| pw.print(" autoAdvanceViewId="); |
| pw.print(info.autoAdvanceViewId); |
| pw.print(" initialLayout=#"); |
| pw.print(Integer.toHexString(info.initialLayout)); |
| pw.print(" uid="); pw.print(p.uid); |
| pw.print(" zombie="); pw.println(p.zombie); |
| } |
| |
| private void dumpHost(Host host, int index, PrintWriter pw) { |
| pw.print(" ["); pw.print(index); pw.print("] hostId="); |
| pw.print(host.hostId); pw.print(' '); |
| pw.print(host.packageName); pw.print('/'); |
| pw.print(host.uid); pw.println(':'); |
| pw.print(" callbacks="); pw.println(host.callbacks); |
| pw.print(" instances.size="); pw.print(host.instances.size()); |
| pw.print(" zombie="); pw.println(host.zombie); |
| } |
| |
| private void dumpAppWidgetId(AppWidgetId id, int index, PrintWriter pw) { |
| pw.print(" ["); pw.print(index); pw.print("] id="); |
| pw.println(id.appWidgetId); |
| pw.print(" hostId="); |
| pw.print(id.host.hostId); pw.print(' '); |
| pw.print(id.host.packageName); pw.print('/'); |
| pw.println(id.host.uid); |
| if (id.provider != null) { |
| pw.print(" provider="); |
| pw.println(id.provider.info.provider.flattenToShortString()); |
| } |
| if (id.host != null) { |
| pw.print(" host.callbacks="); pw.println(id.host.callbacks); |
| } |
| if (id.views != null) { |
| pw.print(" views="); pw.println(id.views); |
| } |
| } |
| |
| void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) |
| != PackageManager.PERMISSION_GRANTED) { |
| pw.println("Permission Denial: can't dump from from pid=" |
| + Binder.getCallingPid() |
| + ", uid=" + Binder.getCallingUid()); |
| return; |
| } |
| |
| synchronized (mAppWidgetIds) { |
| int N = mInstalledProviders.size(); |
| pw.println("Providers:"); |
| for (int i=0; i<N; i++) { |
| dumpProvider(mInstalledProviders.get(i), i, pw); |
| } |
| |
| N = mAppWidgetIds.size(); |
| pw.println(" "); |
| pw.println("AppWidgetIds:"); |
| for (int i=0; i<N; i++) { |
| dumpAppWidgetId(mAppWidgetIds.get(i), i, pw); |
| } |
| |
| N = mHosts.size(); |
| pw.println(" "); |
| pw.println("Hosts:"); |
| for (int i=0; i<N; i++) { |
| dumpHost(mHosts.get(i), i, pw); |
| } |
| |
| N = mDeletedProviders.size(); |
| pw.println(" "); |
| pw.println("Deleted Providers:"); |
| for (int i=0; i<N; i++) { |
| dumpProvider(mDeletedProviders.get(i), i, pw); |
| } |
| |
| N = mDeletedHosts.size(); |
| pw.println(" "); |
| pw.println("Deleted Hosts:"); |
| for (int i=0; i<N; i++) { |
| dumpHost(mDeletedHosts.get(i), i, pw); |
| } |
| } |
| } |
| |
| private void ensureStateLoadedLocked() { |
| if (!mStateLoaded) { |
| if (!mHasFeature) { |
| return; |
| } |
| loadWidgetProviderListLocked(); |
| loadStateLocked(); |
| mStateLoaded = true; |
| } |
| } |
| |
| public int allocateAppWidgetId(String packageName, int hostId) { |
| int callingUid = enforceSystemOrCallingUid(packageName); |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return -1; |
| } |
| ensureStateLoadedLocked(); |
| int appWidgetId = mNextAppWidgetId++; |
| |
| Host host = lookupOrAddHostLocked(callingUid, packageName, hostId); |
| |
| AppWidgetId id = new AppWidgetId(); |
| id.appWidgetId = appWidgetId; |
| id.host = host; |
| |
| host.instances.add(id); |
| mAppWidgetIds.add(id); |
| |
| saveStateAsync(); |
| if (DBG) log("Allocating AppWidgetId for " + packageName + " host=" + hostId |
| + " id=" + appWidgetId); |
| return appWidgetId; |
| } |
| } |
| |
| public void deleteAppWidgetId(int appWidgetId) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| ensureStateLoadedLocked(); |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| if (id != null) { |
| deleteAppWidgetLocked(id); |
| saveStateAsync(); |
| } |
| } |
| } |
| |
| public void deleteHost(int hostId) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| ensureStateLoadedLocked(); |
| int callingUid = Binder.getCallingUid(); |
| Host host = lookupHostLocked(callingUid, hostId); |
| if (host != null) { |
| deleteHostLocked(host); |
| saveStateAsync(); |
| } |
| } |
| } |
| |
| public void deleteAllHosts() { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| ensureStateLoadedLocked(); |
| int callingUid = Binder.getCallingUid(); |
| final int N = mHosts.size(); |
| boolean changed = false; |
| for (int i = N - 1; i >= 0; i--) { |
| Host host = mHosts.get(i); |
| if (host.uidMatches(callingUid)) { |
| deleteHostLocked(host); |
| changed = true; |
| } |
| } |
| if (changed) { |
| saveStateAsync(); |
| } |
| } |
| } |
| |
| void deleteHostLocked(Host host) { |
| if (DBG) log("Deleting host " + host); |
| final int N = host.instances.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| AppWidgetId id = host.instances.get(i); |
| deleteAppWidgetLocked(id); |
| } |
| host.instances.clear(); |
| mHosts.remove(host); |
| mDeletedHosts.add(host); |
| // it's gone or going away, abruptly drop the callback connection |
| host.callbacks = null; |
| } |
| |
| void deleteAppWidgetLocked(AppWidgetId id) { |
| // We first unbind all services that are bound to this id |
| unbindAppWidgetRemoteViewsServicesLocked(id); |
| |
| Host host = id.host; |
| host.instances.remove(id); |
| pruneHostLocked(host); |
| |
| mAppWidgetIds.remove(id); |
| |
| Provider p = id.provider; |
| if (p != null) { |
| p.instances.remove(id); |
| if (!p.zombie) { |
| // send the broacast saying that this appWidgetId has been deleted |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_DELETED); |
| intent.setComponent(p.info.provider); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id.appWidgetId); |
| mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); |
| if (p.instances.size() == 0) { |
| // cancel the future updates |
| cancelBroadcasts(p); |
| |
| // send the broacast saying that the provider is not in use any more |
| intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_DISABLED); |
| intent.setComponent(p.info.provider); |
| mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); |
| } |
| } |
| } |
| } |
| |
| void cancelBroadcasts(Provider p) { |
| if (DBG) log("cancelBroadcasts for " + p); |
| if (p.broadcast != null) { |
| mAlarmManager.cancel(p.broadcast); |
| long token = Binder.clearCallingIdentity(); |
| try { |
| p.broadcast.cancel(); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| p.broadcast = null; |
| } |
| } |
| |
| private void bindAppWidgetIdImpl(int appWidgetId, ComponentName provider, Bundle options) { |
| if (DBG) log("bindAppWidgetIdImpl appwid=" + appWidgetId |
| + " provider=" + provider); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| options = cloneIfLocalBinder(options); |
| ensureStateLoadedLocked(); |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| if (id == null) { |
| throw new IllegalArgumentException("bad appWidgetId"); |
| } |
| if (id.provider != null) { |
| throw new IllegalArgumentException("appWidgetId " + appWidgetId |
| + " already bound to " + id.provider.info.provider); |
| } |
| Provider p = lookupProviderLocked(provider); |
| if (p == null) { |
| throw new IllegalArgumentException("not a appwidget provider: " + provider); |
| } |
| if (p.zombie) { |
| throw new IllegalArgumentException("can't bind to a 3rd party provider in" |
| + " safe mode: " + provider); |
| } |
| |
| id.provider = p; |
| if (options == null) { |
| options = new Bundle(); |
| } |
| id.options = options; |
| |
| // We need to provide a default value for the widget category if it is not specified |
| if (!options.containsKey(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY)) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY, |
| AppWidgetProviderInfo.WIDGET_CATEGORY_HOME_SCREEN); |
| } |
| |
| p.instances.add(id); |
| int instancesSize = p.instances.size(); |
| if (instancesSize == 1) { |
| // tell the provider that it's ready |
| sendEnableIntentLocked(p); |
| } |
| |
| // send an update now -- We need this update now, and just for this appWidgetId. |
| // It's less critical when the next one happens, so when we schedule the next one, |
| // we add updatePeriodMillis to its start time. That time will have some slop, |
| // but that's okay. |
| sendUpdateIntentLocked(p, new int[] { appWidgetId }); |
| |
| // schedule the future updates |
| registerForBroadcastsLocked(p, getAppWidgetIds(p)); |
| saveStateAsync(); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| public void bindAppWidgetId(int appWidgetId, ComponentName provider, Bundle options) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.BIND_APPWIDGET, |
| "bindAppWidgetId appWidgetId=" + appWidgetId + " provider=" + provider); |
| bindAppWidgetIdImpl(appWidgetId, provider, options); |
| } |
| |
| public boolean bindAppWidgetIdIfAllowed( |
| String packageName, int appWidgetId, ComponentName provider, Bundle options) { |
| if (!mHasFeature) { |
| return false; |
| } |
| try { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.BIND_APPWIDGET, null); |
| } catch (SecurityException se) { |
| if (!callerHasBindAppWidgetPermission(packageName)) { |
| return false; |
| } |
| } |
| bindAppWidgetIdImpl(appWidgetId, provider, options); |
| return true; |
| } |
| |
| private boolean callerHasBindAppWidgetPermission(String packageName) { |
| int callingUid = Binder.getCallingUid(); |
| try { |
| if (!UserHandle.isSameApp(callingUid, getUidForPackage(packageName))) { |
| return false; |
| } |
| } catch (Exception e) { |
| return false; |
| } |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| return mPackagesWithBindWidgetPermission.contains(packageName); |
| } |
| } |
| |
| public boolean hasBindAppWidgetPermission(String packageName) { |
| if (!mHasFeature) { |
| return false; |
| } |
| mContext.enforceCallingPermission( |
| android.Manifest.permission.MODIFY_APPWIDGET_BIND_PERMISSIONS, |
| "hasBindAppWidgetPermission packageName=" + packageName); |
| |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| return mPackagesWithBindWidgetPermission.contains(packageName); |
| } |
| } |
| |
| public void setBindAppWidgetPermission(String packageName, boolean permission) { |
| if (!mHasFeature) { |
| return; |
| } |
| mContext.enforceCallingPermission( |
| android.Manifest.permission.MODIFY_APPWIDGET_BIND_PERMISSIONS, |
| "setBindAppWidgetPermission packageName=" + packageName); |
| |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| if (permission) { |
| mPackagesWithBindWidgetPermission.add(packageName); |
| } else { |
| mPackagesWithBindWidgetPermission.remove(packageName); |
| } |
| saveStateAsync(); |
| } |
| } |
| |
| // Binds to a specific RemoteViewsService |
| public void bindRemoteViewsService(int appWidgetId, Intent intent, IBinder connection) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| ensureStateLoadedLocked(); |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| if (id == null) { |
| throw new IllegalArgumentException("bad appWidgetId"); |
| } |
| final ComponentName componentName = intent.getComponent(); |
| try { |
| final ServiceInfo si = mPm.getServiceInfo(componentName, |
| PackageManager.GET_PERMISSIONS, mUserId); |
| if (!android.Manifest.permission.BIND_REMOTEVIEWS.equals(si.permission)) { |
| throw new SecurityException("Selected service does not require " |
| + android.Manifest.permission.BIND_REMOTEVIEWS + ": " + componentName); |
| } |
| } catch (RemoteException e) { |
| throw new IllegalArgumentException("Unknown component " + componentName); |
| } |
| |
| // Ensure that the service specified by the passed intent belongs to the same package |
| // as provides the passed widget id. |
| String widgetIdPackage = id.provider.info.provider.getPackageName(); |
| String servicePackage = componentName.getPackageName(); |
| if (!servicePackage.equals(widgetIdPackage)) { |
| throw new SecurityException("Specified intent doesn't belong to the same package" |
| + " as the provided AppWidget id"); |
| } |
| |
| // If there is already a connection made for this service intent, then disconnect from |
| // that first. (This does not allow multiple connections to the same service under |
| // the same key) |
| ServiceConnectionProxy conn = null; |
| FilterComparison fc = new FilterComparison(intent); |
| Pair<Integer, FilterComparison> key = Pair.create(appWidgetId, fc); |
| if (mBoundRemoteViewsServices.containsKey(key)) { |
| conn = (ServiceConnectionProxy) mBoundRemoteViewsServices.get(key); |
| conn.disconnect(); |
| mContext.unbindService(conn); |
| mBoundRemoteViewsServices.remove(key); |
| } |
| |
| int userId = UserHandle.getUserId(id.provider.uid); |
| if (userId != mUserId) { |
| Slog.w(TAG, "AppWidgetServiceImpl of user " + mUserId |
| + " binding to provider on user " + userId); |
| } |
| // Bind to the RemoteViewsService (which will trigger a callback to the |
| // RemoteViewsAdapter.onServiceConnected()) |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| conn = new ServiceConnectionProxy(key, connection); |
| mContext.bindServiceAsUser(intent, conn, Context.BIND_AUTO_CREATE, |
| new UserHandle(userId)); |
| mBoundRemoteViewsServices.put(key, conn); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| // Add it to the mapping of RemoteViewsService to appWidgetIds so that we can determine |
| // when we can call back to the RemoteViewsService later to destroy associated |
| // factories. |
| incrementAppWidgetServiceRefCount(appWidgetId, fc); |
| } |
| } |
| |
| // Unbinds from a specific RemoteViewsService |
| public void unbindRemoteViewsService(int appWidgetId, Intent intent) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| ensureStateLoadedLocked(); |
| // Unbind from the RemoteViewsService (which will trigger a callback to the bound |
| // RemoteViewsAdapter) |
| Pair<Integer, FilterComparison> key = Pair.create(appWidgetId, new FilterComparison( |
| intent)); |
| if (mBoundRemoteViewsServices.containsKey(key)) { |
| // We don't need to use the appWidgetId until after we are sure there is something |
| // to unbind. Note that this may mask certain issues with apps calling unbind() |
| // more than necessary. |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| if (id == null) { |
| throw new IllegalArgumentException("bad appWidgetId"); |
| } |
| |
| ServiceConnectionProxy conn = (ServiceConnectionProxy) mBoundRemoteViewsServices |
| .get(key); |
| conn.disconnect(); |
| mContext.unbindService(conn); |
| mBoundRemoteViewsServices.remove(key); |
| } |
| } |
| } |
| |
| // Unbinds from a RemoteViewsService when we delete an app widget |
| private void unbindAppWidgetRemoteViewsServicesLocked(AppWidgetId id) { |
| int appWidgetId = id.appWidgetId; |
| // Unbind all connections to Services bound to this AppWidgetId |
| Iterator<Pair<Integer, Intent.FilterComparison>> it = mBoundRemoteViewsServices.keySet() |
| .iterator(); |
| while (it.hasNext()) { |
| final Pair<Integer, Intent.FilterComparison> key = it.next(); |
| if (key.first.intValue() == appWidgetId) { |
| final ServiceConnectionProxy conn = (ServiceConnectionProxy) mBoundRemoteViewsServices |
| .get(key); |
| conn.disconnect(); |
| mContext.unbindService(conn); |
| it.remove(); |
| } |
| } |
| |
| // Check if we need to destroy any services (if no other app widgets are |
| // referencing the same service) |
| decrementAppWidgetServiceRefCount(id); |
| } |
| |
| // Destroys the cached factory on the RemoteViewsService's side related to the specified intent |
| private void destroyRemoteViewsService(final Intent intent, AppWidgetId id) { |
| final ServiceConnection conn = new ServiceConnection() { |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| final IRemoteViewsFactory cb = IRemoteViewsFactory.Stub.asInterface(service); |
| try { |
| cb.onDestroy(intent); |
| } catch (RemoteException e) { |
| e.printStackTrace(); |
| } catch (RuntimeException e) { |
| e.printStackTrace(); |
| } |
| mContext.unbindService(this); |
| } |
| |
| @Override |
| public void onServiceDisconnected(android.content.ComponentName name) { |
| // Do nothing |
| } |
| }; |
| |
| int userId = UserHandle.getUserId(id.provider.uid); |
| // Bind to the service and remove the static intent->factory mapping in the |
| // RemoteViewsService. |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mContext.bindServiceAsUser(intent, conn, Context.BIND_AUTO_CREATE, |
| new UserHandle(userId)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| // Adds to the ref-count for a given RemoteViewsService intent |
| private void incrementAppWidgetServiceRefCount(int appWidgetId, FilterComparison fc) { |
| HashSet<Integer> appWidgetIds = null; |
| if (mRemoteViewsServicesAppWidgets.containsKey(fc)) { |
| appWidgetIds = mRemoteViewsServicesAppWidgets.get(fc); |
| } else { |
| appWidgetIds = new HashSet<Integer>(); |
| mRemoteViewsServicesAppWidgets.put(fc, appWidgetIds); |
| } |
| appWidgetIds.add(appWidgetId); |
| } |
| |
| // Subtracts from the ref-count for a given RemoteViewsService intent, prompting a delete if |
| // the ref-count reaches zero. |
| private void decrementAppWidgetServiceRefCount(AppWidgetId id) { |
| Iterator<FilterComparison> it = mRemoteViewsServicesAppWidgets.keySet().iterator(); |
| while (it.hasNext()) { |
| final FilterComparison key = it.next(); |
| final HashSet<Integer> ids = mRemoteViewsServicesAppWidgets.get(key); |
| if (ids.remove(id.appWidgetId)) { |
| // If we have removed the last app widget referencing this service, then we |
| // should destroy it and remove it from this set |
| if (ids.isEmpty()) { |
| destroyRemoteViewsService(key.getIntent(), id); |
| it.remove(); |
| } |
| } |
| } |
| } |
| |
| public AppWidgetProviderInfo getAppWidgetInfo(int appWidgetId) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return null; |
| } |
| ensureStateLoadedLocked(); |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| if (id != null && id.provider != null && !id.provider.zombie) { |
| return cloneIfLocalBinder(id.provider.info); |
| } |
| return null; |
| } |
| } |
| |
| public RemoteViews getAppWidgetViews(int appWidgetId) { |
| if (DBG) log("getAppWidgetViews id=" + appWidgetId); |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return null; |
| } |
| ensureStateLoadedLocked(); |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| if (id != null) { |
| return cloneIfLocalBinder(id.views); |
| } |
| if (DBG) log(" couldn't find appwidgetid"); |
| return null; |
| } |
| } |
| |
| public List<AppWidgetProviderInfo> getInstalledProviders(int categoryFilter) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return new ArrayList<AppWidgetProviderInfo>(0); |
| } |
| ensureStateLoadedLocked(); |
| final int N = mInstalledProviders.size(); |
| ArrayList<AppWidgetProviderInfo> result = new ArrayList<AppWidgetProviderInfo>(N); |
| for (int i = 0; i < N; i++) { |
| Provider p = mInstalledProviders.get(i); |
| if (!p.zombie && (p.info.widgetCategory & categoryFilter) != 0) { |
| result.add(cloneIfLocalBinder(p.info)); |
| } |
| } |
| return result; |
| } |
| } |
| |
| public void updateAppWidgetIds(int[] appWidgetIds, RemoteViews views) { |
| if (!mHasFeature) { |
| return; |
| } |
| if (appWidgetIds == null) { |
| return; |
| } |
| if (DBG) log("updateAppWidgetIds views: " + views); |
| int bitmapMemoryUsage = 0; |
| if (views != null) { |
| bitmapMemoryUsage = views.estimateMemoryUsage(); |
| } |
| if (bitmapMemoryUsage > mMaxWidgetBitmapMemory) { |
| throw new IllegalArgumentException("RemoteViews for widget update exceeds maximum" + |
| " bitmap memory usage (used: " + bitmapMemoryUsage + ", max: " + |
| mMaxWidgetBitmapMemory + ") The total memory cannot exceed that required to" + |
| " fill the device's screen once."); |
| } |
| |
| if (appWidgetIds.length == 0) { |
| return; |
| } |
| final int N = appWidgetIds.length; |
| |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetIds[i]); |
| updateAppWidgetInstanceLocked(id, views); |
| } |
| } |
| } |
| |
| private void saveStateAsync() { |
| mSaveStateHandler.post(mSaveStateRunnable); |
| } |
| |
| private final Runnable mSaveStateRunnable = new Runnable() { |
| @Override |
| public void run() { |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| saveStateLocked(); |
| } |
| } |
| }; |
| |
| public void updateAppWidgetOptions(int appWidgetId, Bundle options) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| ensureStateLoadedLocked(); |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| |
| if (id == null) { |
| return; |
| } |
| |
| Provider p = id.provider; |
| // Merge the options |
| id.options.putAll(cloneIfLocalBinder(options)); |
| |
| // send the broacast saying that this appWidgetId has been deleted |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_OPTIONS_CHANGED); |
| intent.setComponent(p.info.provider); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id.appWidgetId); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS, id.options); |
| mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); |
| saveStateAsync(); |
| } |
| } |
| |
| public Bundle getAppWidgetOptions(int appWidgetId) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return Bundle.EMPTY; |
| } |
| ensureStateLoadedLocked(); |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); |
| if (id != null && id.options != null) { |
| return cloneIfLocalBinder(id.options); |
| } else { |
| return Bundle.EMPTY; |
| } |
| } |
| } |
| |
| public void partiallyUpdateAppWidgetIds(int[] appWidgetIds, RemoteViews views) { |
| if (!mHasFeature) { |
| return; |
| } |
| if (appWidgetIds == null) { |
| return; |
| } |
| if (appWidgetIds.length == 0) { |
| return; |
| } |
| final int N = appWidgetIds.length; |
| |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetIds[i]); |
| if (id == null) { |
| Slog.w(TAG, "widget id " + appWidgetIds[i] + " not found!"); |
| } else if (id.views != null) { |
| // Only trigger a partial update for a widget if it has received a full update |
| updateAppWidgetInstanceLocked(id, views, true); |
| } |
| } |
| } |
| } |
| |
| public void notifyAppWidgetViewDataChanged(int[] appWidgetIds, int viewId) { |
| if (!mHasFeature) { |
| return; |
| } |
| if (appWidgetIds == null) { |
| return; |
| } |
| if (appWidgetIds.length == 0) { |
| return; |
| } |
| final int N = appWidgetIds.length; |
| |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = lookupAppWidgetIdLocked(appWidgetIds[i]); |
| notifyAppWidgetViewDataChangedInstanceLocked(id, viewId); |
| } |
| } |
| } |
| |
| public void updateAppWidgetProvider(ComponentName provider, RemoteViews views) { |
| if (!mHasFeature) { |
| return; |
| } |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| Provider p = lookupProviderLocked(provider); |
| if (p == null) { |
| Slog.w(TAG, "updateAppWidgetProvider: provider doesn't exist: " + provider); |
| return; |
| } |
| ArrayList<AppWidgetId> instances = p.instances; |
| final int callingUid = Binder.getCallingUid(); |
| final int N = instances.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = instances.get(i); |
| if (canAccessAppWidgetId(id, callingUid)) { |
| updateAppWidgetInstanceLocked(id, views); |
| } |
| } |
| } |
| } |
| |
| void updateAppWidgetInstanceLocked(AppWidgetId id, RemoteViews views) { |
| updateAppWidgetInstanceLocked(id, views, false); |
| } |
| |
| void updateAppWidgetInstanceLocked(AppWidgetId id, RemoteViews views, boolean isPartialUpdate) { |
| // allow for stale appWidgetIds and other badness |
| // lookup also checks that the calling process can access the appWidgetId |
| // drop unbound appWidgetIds (shouldn't be possible under normal circumstances) |
| if (id != null && id.provider != null && !id.provider.zombie && !id.host.zombie) { |
| |
| if (!isPartialUpdate) { |
| // For a full update we replace the RemoteViews completely. |
| id.views = views; |
| } else { |
| // For a partial update, we merge the new RemoteViews with the old. |
| id.views.mergeRemoteViews(views); |
| } |
| |
| // is anyone listening? |
| if (id.host.callbacks != null) { |
| try { |
| // the lock is held, but this is a oneway call |
| id.host.callbacks.updateAppWidget(id.appWidgetId, views, mUserId); |
| } catch (RemoteException e) { |
| // It failed; remove the callback. No need to prune because |
| // we know that this host is still referenced by this instance. |
| id.host.callbacks = null; |
| } |
| } |
| } |
| } |
| |
| void notifyAppWidgetViewDataChangedInstanceLocked(AppWidgetId id, int viewId) { |
| // allow for stale appWidgetIds and other badness |
| // lookup also checks that the calling process can access the appWidgetId |
| // drop unbound appWidgetIds (shouldn't be possible under normal circumstances) |
| if (id != null && id.provider != null && !id.provider.zombie && !id.host.zombie) { |
| // is anyone listening? |
| if (id.host.callbacks != null) { |
| try { |
| // the lock is held, but this is a oneway call |
| id.host.callbacks.viewDataChanged(id.appWidgetId, viewId, mUserId); |
| } catch (RemoteException e) { |
| // It failed; remove the callback. No need to prune because |
| // we know that this host is still referenced by this instance. |
| id.host.callbacks = null; |
| } |
| } |
| |
| // If the host is unavailable, then we call the associated |
| // RemoteViewsFactory.onDataSetChanged() directly |
| if (id.host.callbacks == null) { |
| Set<FilterComparison> keys = mRemoteViewsServicesAppWidgets.keySet(); |
| for (FilterComparison key : keys) { |
| if (mRemoteViewsServicesAppWidgets.get(key).contains(id.appWidgetId)) { |
| Intent intent = key.getIntent(); |
| |
| final ServiceConnection conn = new ServiceConnection() { |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| IRemoteViewsFactory cb = IRemoteViewsFactory.Stub |
| .asInterface(service); |
| try { |
| cb.onDataSetChangedAsync(); |
| } catch (RemoteException e) { |
| e.printStackTrace(); |
| } catch (RuntimeException e) { |
| e.printStackTrace(); |
| } |
| mContext.unbindService(this); |
| } |
| |
| @Override |
| public void onServiceDisconnected(android.content.ComponentName name) { |
| // Do nothing |
| } |
| }; |
| |
| int userId = UserHandle.getUserId(id.provider.uid); |
| // Bind to the service and call onDataSetChanged() |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mContext.bindServiceAsUser(intent, conn, Context.BIND_AUTO_CREATE, |
| new UserHandle(userId)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| private boolean isLocalBinder() { |
| return Process.myPid() == Binder.getCallingPid(); |
| } |
| |
| private RemoteViews cloneIfLocalBinder(RemoteViews rv) { |
| if (isLocalBinder() && rv != null) { |
| return rv.clone(); |
| } |
| return rv; |
| } |
| |
| private AppWidgetProviderInfo cloneIfLocalBinder(AppWidgetProviderInfo info) { |
| if (isLocalBinder() && info != null) { |
| return info.clone(); |
| } |
| return info; |
| } |
| |
| private Bundle cloneIfLocalBinder(Bundle bundle) { |
| // Note: this is only a shallow copy. For now this will be fine, but it could be problematic |
| // if we start adding objects to the options. Further, it would only be an issue if keyguard |
| // used such options. |
| if (isLocalBinder() && bundle != null) { |
| return (Bundle) bundle.clone(); |
| } |
| return bundle; |
| } |
| |
| public int[] startListening(IAppWidgetHost callbacks, String packageName, int hostId, |
| List<RemoteViews> updatedViews) { |
| if (!mHasFeature) { |
| return new int[0]; |
| } |
| int callingUid = enforceCallingUid(packageName); |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| Host host = lookupOrAddHostLocked(callingUid, packageName, hostId); |
| host.callbacks = callbacks; |
| |
| updatedViews.clear(); |
| |
| ArrayList<AppWidgetId> instances = host.instances; |
| int N = instances.size(); |
| int[] updatedIds = new int[N]; |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = instances.get(i); |
| updatedIds[i] = id.appWidgetId; |
| updatedViews.add(cloneIfLocalBinder(id.views)); |
| } |
| return updatedIds; |
| } |
| } |
| |
| public void stopListening(int hostId) { |
| synchronized (mAppWidgetIds) { |
| if (!mHasFeature) { |
| return; |
| } |
| ensureStateLoadedLocked(); |
| Host host = lookupHostLocked(Binder.getCallingUid(), hostId); |
| if (host != null) { |
| host.callbacks = null; |
| pruneHostLocked(host); |
| } |
| } |
| } |
| |
| boolean canAccessAppWidgetId(AppWidgetId id, int callingUid) { |
| if (id.host.uidMatches(callingUid)) { |
| // Apps hosting the AppWidget have access to it. |
| return true; |
| } |
| if (id.provider != null && id.provider.uid == callingUid) { |
| // Apps providing the AppWidget have access to it (if the appWidgetId has been bound) |
| return true; |
| } |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.BIND_APPWIDGET) == PackageManager.PERMISSION_GRANTED) { |
| // Apps that can bind have access to all appWidgetIds. |
| return true; |
| } |
| // Nobody else can access it. |
| return false; |
| } |
| |
| AppWidgetId lookupAppWidgetIdLocked(int appWidgetId) { |
| int callingUid = Binder.getCallingUid(); |
| final int N = mAppWidgetIds.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = mAppWidgetIds.get(i); |
| if (id.appWidgetId == appWidgetId && canAccessAppWidgetId(id, callingUid)) { |
| return id; |
| } |
| } |
| return null; |
| } |
| |
| Provider lookupProviderLocked(ComponentName provider) { |
| return lookupProviderLocked(provider, mInstalledProviders); |
| } |
| |
| Provider lookupProviderLocked(ComponentName provider, ArrayList<Provider> installedProviders) { |
| final int N = installedProviders.size(); |
| for (int i = 0; i < N; i++) { |
| Provider p = installedProviders.get(i); |
| if (p.info.provider.equals(provider)) { |
| return p; |
| } |
| } |
| return null; |
| } |
| |
| Host lookupHostLocked(int uid, int hostId) { |
| final int N = mHosts.size(); |
| for (int i = 0; i < N; i++) { |
| Host h = mHosts.get(i); |
| if (h.uidMatches(uid) && h.hostId == hostId) { |
| return h; |
| } |
| } |
| return null; |
| } |
| |
| Host lookupOrAddHostLocked(int uid, String packageName, int hostId) { |
| final int N = mHosts.size(); |
| for (int i = 0; i < N; i++) { |
| Host h = mHosts.get(i); |
| if (h.hostId == hostId && h.packageName.equals(packageName)) { |
| return h; |
| } |
| } |
| Host host = new Host(); |
| host.packageName = packageName; |
| host.uid = uid; |
| host.hostId = hostId; |
| mHosts.add(host); |
| return host; |
| } |
| |
| void pruneHostLocked(Host host) { |
| if (host.instances.size() == 0 && host.callbacks == null) { |
| if (DBG) log("Pruning host " + host); |
| mHosts.remove(host); |
| } |
| } |
| |
| void loadWidgetProviderListLocked() { |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); |
| try { |
| List<ResolveInfo> broadcastReceivers = mPm.queryIntentReceivers(intent, |
| intent.resolveTypeIfNeeded(mContext.getContentResolver()), |
| PackageManager.GET_META_DATA, mUserId); |
| |
| final int N = broadcastReceivers == null ? 0 : broadcastReceivers.size(); |
| for (int i = 0; i < N; i++) { |
| ResolveInfo ri = broadcastReceivers.get(i); |
| addProviderLocked(ri); |
| } |
| } catch (RemoteException re) { |
| // Shouldn't happen, local call |
| } |
| } |
| |
| boolean addProviderLocked(ResolveInfo ri) { |
| if ((ri.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) { |
| return false; |
| } |
| if (!ri.activityInfo.isEnabled()) { |
| return false; |
| } |
| Provider p = parseProviderInfoXml(new ComponentName(ri.activityInfo.packageName, |
| ri.activityInfo.name), ri); |
| if (p != null) { |
| // we might have an inactive entry for this provider already due to |
| // a preceding restore operation. if so, fix it up in place; otherwise |
| // just add this new one. |
| Provider existing = lookupProviderLocked(p.info.provider); |
| if (existing != null) { |
| if (existing.zombie && !mSafeMode) { |
| // it's a placeholder that was set up during an app restore |
| existing.zombie = false; |
| existing.info = p.info; // the real one filled out from the ResolveInfo |
| existing.uid = p.uid; |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "Provider placeholder now reified: " + existing); |
| } |
| } |
| } else { |
| mInstalledProviders.add(p); |
| } |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| void removeProviderLocked(int index, Provider p) { |
| int N = p.instances.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = p.instances.get(i); |
| // Call back with empty RemoteViews |
| updateAppWidgetInstanceLocked(id, null); |
| // Stop telling the host about updates for this from now on |
| cancelBroadcasts(p); |
| // clear out references to this appWidgetId |
| id.host.instances.remove(id); |
| mAppWidgetIds.remove(id); |
| id.provider = null; |
| pruneHostLocked(id.host); |
| id.host = null; |
| } |
| p.instances.clear(); |
| mInstalledProviders.remove(index); |
| mDeletedProviders.add(p); |
| // no need to send the DISABLE broadcast, since the receiver is gone anyway |
| cancelBroadcasts(p); |
| } |
| |
| void sendEnableIntentLocked(Provider p) { |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_ENABLED); |
| intent.setComponent(p.info.provider); |
| mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); |
| } |
| |
| void sendUpdateIntentLocked(Provider p, int[] appWidgetIds) { |
| if (appWidgetIds != null && appWidgetIds.length > 0) { |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds); |
| intent.setComponent(p.info.provider); |
| mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); |
| } |
| } |
| |
| void registerForBroadcastsLocked(Provider p, int[] appWidgetIds) { |
| if (p.info.updatePeriodMillis > 0) { |
| // if this is the first instance, set the alarm. otherwise, |
| // rely on the fact that we've already set it and that |
| // PendingIntent.getBroadcast will update the extras. |
| boolean alreadyRegistered = p.broadcast != null; |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds); |
| intent.setComponent(p.info.provider); |
| long token = Binder.clearCallingIdentity(); |
| try { |
| p.broadcast = PendingIntent.getBroadcastAsUser(mContext, 1, intent, |
| PendingIntent.FLAG_UPDATE_CURRENT, new UserHandle(mUserId)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| if (!alreadyRegistered) { |
| long period = p.info.updatePeriodMillis; |
| if (period < MIN_UPDATE_PERIOD) { |
| period = MIN_UPDATE_PERIOD; |
| } |
| mAlarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock |
| .elapsedRealtime() |
| + period, period, p.broadcast); |
| } |
| } |
| } |
| |
| static int[] getAppWidgetIds(Provider p) { |
| int instancesSize = p.instances.size(); |
| int appWidgetIds[] = new int[instancesSize]; |
| for (int i = 0; i < instancesSize; i++) { |
| appWidgetIds[i] = p.instances.get(i).appWidgetId; |
| } |
| return appWidgetIds; |
| } |
| |
| public int[] getAppWidgetIds(ComponentName provider) { |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| Provider p = lookupProviderLocked(provider); |
| if (p != null && Binder.getCallingUid() == p.uid) { |
| return getAppWidgetIds(p); |
| } else { |
| return new int[0]; |
| } |
| } |
| } |
| |
| static int[] getAppWidgetIds(Host h) { |
| int instancesSize = h.instances.size(); |
| int appWidgetIds[] = new int[instancesSize]; |
| for (int i = 0; i < instancesSize; i++) { |
| appWidgetIds[i] = h.instances.get(i).appWidgetId; |
| } |
| return appWidgetIds; |
| } |
| |
| public int[] getAppWidgetIdsForHost(int hostId) { |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| int callingUid = Binder.getCallingUid(); |
| Host host = lookupHostLocked(callingUid, hostId); |
| if (host != null) { |
| return getAppWidgetIds(host); |
| } else { |
| return new int[0]; |
| } |
| } |
| } |
| |
| public List<String> getWidgetParticipants() { |
| HashSet<String> packages = new HashSet<String>(); |
| synchronized (mAppWidgetIds) { |
| final int N = mAppWidgetIds.size(); |
| for (int i = 0; i < N; i++) { |
| final AppWidgetId id = mAppWidgetIds.get(i); |
| packages.add(id.host.packageName); |
| packages.add(id.provider.info.provider.getPackageName()); |
| } |
| } |
| return new ArrayList<String>(packages); |
| } |
| |
| private void serializeProvider(XmlSerializer out, Provider p) throws IOException { |
| out.startTag(null, "p"); |
| out.attribute(null, "pkg", p.info.provider.getPackageName()); |
| out.attribute(null, "cl", p.info.provider.getClassName()); |
| out.endTag(null, "p"); |
| } |
| |
| private void serializeHost(XmlSerializer out, Host host) throws IOException { |
| out.startTag(null, "h"); |
| out.attribute(null, "pkg", host.packageName); |
| out.attribute(null, "id", Integer.toHexString(host.hostId)); |
| out.endTag(null, "h"); |
| } |
| |
| private void serializeAppWidgetId(XmlSerializer out, AppWidgetId id) throws IOException { |
| out.startTag(null, "g"); |
| out.attribute(null, "id", Integer.toHexString(id.appWidgetId)); |
| out.attribute(null, "rid", Integer.toHexString(id.restoredId)); |
| out.attribute(null, "h", Integer.toHexString(id.host.tag)); |
| if (id.provider != null) { |
| out.attribute(null, "p", Integer.toHexString(id.provider.tag)); |
| } |
| if (id.options != null) { |
| out.attribute(null, "min_width", Integer.toHexString(id.options.getInt( |
| AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH))); |
| out.attribute(null, "min_height", Integer.toHexString(id.options.getInt( |
| AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT))); |
| out.attribute(null, "max_width", Integer.toHexString(id.options.getInt( |
| AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH))); |
| out.attribute(null, "max_height", Integer.toHexString(id.options.getInt( |
| AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT))); |
| out.attribute(null, "host_category", Integer.toHexString(id.options.getInt( |
| AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY))); |
| } |
| out.endTag(null, "g"); |
| } |
| |
| private Bundle parseWidgetIdOptions(XmlPullParser parser) { |
| Bundle options = new Bundle(); |
| String minWidthString = parser.getAttributeValue(null, "min_width"); |
| if (minWidthString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, |
| Integer.parseInt(minWidthString, 16)); |
| } |
| String minHeightString = parser.getAttributeValue(null, "min_height"); |
| if (minHeightString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, |
| Integer.parseInt(minHeightString, 16)); |
| } |
| String maxWidthString = parser.getAttributeValue(null, "max_width"); |
| if (maxWidthString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, |
| Integer.parseInt(maxWidthString, 16)); |
| } |
| String maxHeightString = parser.getAttributeValue(null, "max_height"); |
| if (maxHeightString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, |
| Integer.parseInt(maxHeightString, 16)); |
| } |
| String categoryString = parser.getAttributeValue(null, "host_category"); |
| if (categoryString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY, |
| Integer.parseInt(categoryString, 16)); |
| } |
| return options; |
| } |
| |
| // Does this package either host or provide any active widgets? |
| private boolean packageNeedsWidgetBackupLocked(String packageName) { |
| int N = mAppWidgetIds.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = mAppWidgetIds.get(i); |
| if (packageName.equals(id.host.packageName)) { |
| // this package is hosting widgets, so it knows widget IDs |
| return true; |
| } |
| Provider p = id.provider; |
| if (p != null && packageName.equals(p.info.provider.getPackageName())) { |
| // someone is hosting this app's widgets, so it knows widget IDs |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| // build the widget-state blob that we save for the app during backup. |
| public byte[] getWidgetState(String backupTarget) { |
| if (!mHasFeature) { |
| return null; |
| } |
| |
| ByteArrayOutputStream stream = new ByteArrayOutputStream(); |
| synchronized (mAppWidgetIds) { |
| // Preflight: if this app neither hosts nor provides any live widgets |
| // we have no work to do. |
| if (!packageNeedsWidgetBackupLocked(backupTarget)) { |
| return null; |
| } |
| |
| try { |
| XmlSerializer out = new FastXmlSerializer(); |
| out.setOutput(stream, "utf-8"); |
| out.startDocument(null, true); |
| out.startTag(null, "ws"); // widget state |
| out.attribute(null, "version", String.valueOf(WIDGET_STATE_VERSION)); |
| out.attribute(null, "pkg", backupTarget); |
| |
| // Remember all the providers that are currently hosted or published |
| // by this package: that is, all of the entities related to this app |
| // which will need to be told about id remapping. |
| int N = mInstalledProviders.size(); |
| int index = 0; |
| for (int i = 0; i < N; i++) { |
| Provider p = mInstalledProviders.get(i); |
| if (p.instances.size() > 0) { |
| if (backupTarget.equals(p.info.provider.getPackageName()) |
| || p.isHostedBy(backupTarget)) { |
| serializeProvider(out, p); |
| p.tag = index++; |
| } |
| } |
| } |
| |
| N = mHosts.size(); |
| index = 0; |
| for (int i = 0; i < N; i++) { |
| Host host = mHosts.get(i); |
| if (backupTarget.equals(host.packageName) |
| || host.hostsPackage(backupTarget)) { |
| serializeHost(out, host); |
| host.tag = index++; |
| } |
| } |
| |
| // All widget instances involving this package, |
| // either as host or as provider |
| N = mAppWidgetIds.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = mAppWidgetIds.get(i); |
| if (backupTarget.equals(id.host.packageName) |
| || (id.provider != null && backupTarget.equals( |
| id.provider.info.provider.getPackageName()))) { |
| serializeAppWidgetId(out, id); |
| } |
| } |
| |
| out.endTag(null, "ws"); |
| out.endDocument(); |
| } catch (IOException e) { |
| Slog.w(TAG, "Unable to save widget state for " + backupTarget); |
| return null; |
| } |
| |
| } |
| return stream.toByteArray(); |
| } |
| |
| public void restoreStarting() { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "restore starting for user " + mUserId); |
| } |
| synchronized (mRestoredWidgetIds) { |
| // We're starting a new "system" restore operation, so any widget restore |
| // state that we see from here on is intended to replace the current |
| // widget configuration of any/all of the affected apps. |
| mPrunedApps.clear(); |
| mUpdatesByProvider.clear(); |
| mUpdatesByHost.clear(); |
| } |
| } |
| |
| // We're restoring widget state for 'pkg', so we start by wiping (a) all widget |
| // instances that are hosted by that app, and (b) all instances in other hosts |
| // for which 'pkg' is the provider. We assume that we'll be restoring all of |
| // these hosts & providers, so will be reconstructing a correct live state. |
| private void pruneWidgetStateLr(String pkg) { |
| if (!mPrunedApps.contains(pkg)) { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "pruning widget state for restoring package " + pkg); |
| } |
| for (int i = mAppWidgetIds.size() - 1; i >= 0; i--) { |
| AppWidgetId id = mAppWidgetIds.get(i); |
| Provider p = id.provider; |
| if (id.host.packageName.equals(pkg) |
| || p.info.provider.getPackageName().equals(pkg)) { |
| // 'pkg' is either the host or the provider for this instances, |
| // so we tear it down in anticipation of it (possibly) being |
| // reconstructed due to the restore |
| p.instances.remove(id); |
| |
| unbindAppWidgetRemoteViewsServicesLocked(id); |
| mAppWidgetIds.remove(i); |
| } |
| } |
| mPrunedApps.add(pkg); |
| } else { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "already pruned " + pkg + ", continuing normally"); |
| } |
| } |
| } |
| |
| // Accumulate a list of updates that affect the given provider for a final |
| // coalesced notification broadcast once restore is over. |
| class RestoreUpdateRecord { |
| public int oldId; |
| public int newId; |
| public boolean notified; |
| |
| public RestoreUpdateRecord(int theOldId, int theNewId) { |
| oldId = theOldId; |
| newId = theNewId; |
| notified = false; |
| } |
| } |
| |
| HashMap<Provider, ArrayList<RestoreUpdateRecord>> mUpdatesByProvider |
| = new HashMap<Provider, ArrayList<RestoreUpdateRecord>>(); |
| HashMap<Host, ArrayList<RestoreUpdateRecord>> mUpdatesByHost |
| = new HashMap<Host, ArrayList<RestoreUpdateRecord>>(); |
| |
| private boolean alreadyStashed(ArrayList<RestoreUpdateRecord> stash, |
| final int oldId, final int newId) { |
| final int N = stash.size(); |
| for (int i = 0; i < N; i++) { |
| RestoreUpdateRecord r = stash.get(i); |
| if (r.oldId == oldId && r.newId == newId) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private void stashProviderRestoreUpdateLr(Provider provider, int oldId, int newId) { |
| ArrayList<RestoreUpdateRecord> r = mUpdatesByProvider.get(provider); |
| if (r == null) { |
| r = new ArrayList<RestoreUpdateRecord>(); |
| mUpdatesByProvider.put(provider, r); |
| } else { |
| // don't duplicate |
| if (alreadyStashed(r, oldId, newId)) { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "ID remap " + oldId + " -> " + newId |
| + " already stashed for " + provider); |
| } |
| return; |
| } |
| } |
| r.add(new RestoreUpdateRecord(oldId, newId)); |
| } |
| |
| private void stashHostRestoreUpdateLr(Host host, int oldId, int newId) { |
| ArrayList<RestoreUpdateRecord> r = mUpdatesByHost.get(host); |
| if (r == null) { |
| r = new ArrayList<RestoreUpdateRecord>(); |
| mUpdatesByHost.put(host, r); |
| } else { |
| if (alreadyStashed(r, oldId, newId)) { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "ID remap " + oldId + " -> " + newId |
| + " already stashed for " + host); |
| } |
| return; |
| } |
| } |
| r.add(new RestoreUpdateRecord(oldId, newId)); |
| } |
| |
| public void restoreWidgetState(String packageName, byte[] restoredState) { |
| if (!mHasFeature) { |
| return; |
| } |
| |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "Restoring widget state for " + packageName); |
| } |
| |
| ByteArrayInputStream stream = new ByteArrayInputStream(restoredState); |
| try { |
| // Providers mentioned in the widget dataset by ordinal |
| ArrayList<Provider> restoredProviders = new ArrayList<Provider>(); |
| |
| // Hosts mentioned in the widget dataset by ordinal |
| ArrayList<Host> restoredHosts = new ArrayList<Host>(); |
| |
| //HashSet<String> toNotify = new HashSet<String>(); |
| |
| XmlPullParser parser = Xml.newPullParser(); |
| parser.setInput(stream, null); |
| |
| synchronized (mAppWidgetIds) { |
| synchronized (mRestoredWidgetIds) { |
| int type; |
| do { |
| type = parser.next(); |
| if (type == XmlPullParser.START_TAG) { |
| final String tag = parser.getName(); |
| if ("ws".equals(tag)) { |
| String v = parser.getAttributeValue(null, "version"); |
| String pkg = parser.getAttributeValue(null, "pkg"); |
| |
| // TODO: fix up w.r.t. canonical vs current package names |
| if (!packageName.equals(pkg)) { |
| Slog.w(TAG, "Package mismatch in ws"); |
| return; |
| } |
| |
| int version = Integer.parseInt(v); |
| if (version > WIDGET_STATE_VERSION) { |
| Slog.w(TAG, "Unable to process state version " + version); |
| return; |
| } |
| } else if ("p".equals(tag)) { |
| String pkg = parser.getAttributeValue(null, "pkg"); |
| String cl = parser.getAttributeValue(null, "cl"); |
| |
| // hostedProviders index will match 'p' attribute in widget's |
| // entry in the xml file being restored |
| // If there's no live entry for this provider, add an inactive one |
| // so that widget IDs referring to them can be properly allocated |
| final ComponentName cn = new ComponentName(pkg, cl); |
| Provider p = lookupProviderLocked(cn, mInstalledProviders); |
| if (p == null) { |
| p = new Provider(); |
| p.info = new AppWidgetProviderInfo(); |
| p.info.provider = cn; |
| p.zombie = true; |
| mInstalledProviders.add(p); |
| } |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, " provider " + cn); |
| } |
| restoredProviders.add(p); |
| } else if ("h".equals(tag)) { |
| // The host app may not yet exist on the device. If it's here we |
| // just use the existing Host entry, otherwise we create a |
| // placeholder whose uid will be fixed up at PACKAGE_ADDED time. |
| String pkg = parser.getAttributeValue(null, "pkg"); |
| int uid; |
| try { |
| uid = getUidForPackage(pkg); |
| } catch (NameNotFoundException e) { |
| uid = -1; |
| } |
| int hostId = Integer.parseInt( |
| parser.getAttributeValue(null, "id"), 16); |
| Host h = lookupOrAddHostLocked(uid, pkg, hostId); |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, " host[" + restoredHosts.size() |
| + "]: {" + h.packageName + ":" + h.hostId + "}"); |
| } |
| restoredHosts.add(h); |
| } else if ("g".equals(tag)) { |
| int restoredId = Integer.parseInt( |
| parser.getAttributeValue(null, "id"), 16); |
| int hostIndex = Integer.parseInt( |
| parser.getAttributeValue(null, "h"), 16); |
| Host host = restoredHosts.get(hostIndex); |
| Provider p = null; |
| String prov = parser.getAttributeValue(null, "p"); |
| if (prov != null) { |
| // could have been null if the app had allocated an id |
| // but not yet established a binding under that id |
| int which = Integer.parseInt(prov, 16); |
| p = restoredProviders.get(which); |
| } |
| |
| // We'll be restoring widget state for both the host and |
| // provider sides of this widget ID, so make sure we are |
| // beginning from a clean slate on both fronts. |
| pruneWidgetStateLr(host.packageName); |
| if (p != null) { |
| pruneWidgetStateLr(p.info.provider.getPackageName()); |
| } |
| |
| // Have we heard about this ancestral widget instance before? |
| AppWidgetId id = findRestoredWidgetLocked(restoredId, host, p); |
| if (id == null) { |
| id = new AppWidgetId(); |
| id.appWidgetId = mNextAppWidgetId++; |
| id.restoredId = restoredId; |
| id.options = parseWidgetIdOptions(parser); |
| id.host = host; |
| id.host.instances.add(id); |
| id.provider = p; |
| if (id.provider != null) { |
| id.provider.instances.add(id); |
| } |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "New restored id " + restoredId |
| + " now " + id); |
| } |
| mAppWidgetIds.add(id); |
| } |
| if (id.provider.info != null) { |
| stashProviderRestoreUpdateLr(id.provider, |
| restoredId, id.appWidgetId); |
| } else { |
| Slog.w(TAG, "Missing provider for restored widget " + id); |
| } |
| stashHostRestoreUpdateLr(id.host, restoredId, id.appWidgetId); |
| |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, " instance: " + restoredId |
| + " -> " + id.appWidgetId |
| + " :: p=" + id.provider); |
| } |
| } |
| } |
| } while (type != XmlPullParser.END_DOCUMENT); |
| |
| // We've updated our own bookkeeping. We'll need to notify the hosts and |
| // providers about the changes, but we can't do that yet because the restore |
| // target is not necessarily fully live at this moment. Set aside the |
| // information for now; the backup manager will call us once more at the |
| // end of the process when all of the targets are in a known state, and we |
| // will update at that point. |
| } |
| } |
| } catch (XmlPullParserException e) { |
| Slog.w(TAG, "Unable to restore widget state for " + packageName); |
| } catch (IOException e) { |
| Slog.w(TAG, "Unable to restore widget state for " + packageName); |
| } finally { |
| saveStateAsync(); |
| } |
| } |
| |
| // Called once following the conclusion of a restore operation. This is when we |
| // send out updates to apps involved in widget-state restore telling them about |
| // the new widget ID space. |
| public void restoreFinished() { |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "restoreFinished for " + mUserId); |
| } |
| |
| final UserHandle userHandle = new UserHandle(mUserId); |
| synchronized (mRestoredWidgetIds) { |
| // Build the providers' broadcasts and send them off |
| Set<Entry<Provider, ArrayList<RestoreUpdateRecord>>> providerEntries |
| = mUpdatesByProvider.entrySet(); |
| for (Entry<Provider, ArrayList<RestoreUpdateRecord>> e : providerEntries) { |
| // For each provider there's a list of affected IDs |
| Provider provider = e.getKey(); |
| ArrayList<RestoreUpdateRecord> updates = e.getValue(); |
| final int pending = countPendingUpdates(updates); |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "Provider " + provider + " pending: " + pending); |
| } |
| if (pending > 0) { |
| int[] oldIds = new int[pending]; |
| int[] newIds = new int[pending]; |
| final int N = updates.size(); |
| int nextPending = 0; |
| for (int i = 0; i < N; i++) { |
| RestoreUpdateRecord r = updates.get(i); |
| if (!r.notified) { |
| r.notified = true; |
| oldIds[nextPending] = r.oldId; |
| newIds[nextPending] = r.newId; |
| nextPending++; |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, " " + r.oldId + " => " + r.newId); |
| } |
| } |
| } |
| sendWidgetRestoreBroadcast(AppWidgetManager.ACTION_APPWIDGET_RESTORED, |
| provider, null, oldIds, newIds, userHandle); |
| } |
| } |
| |
| // same thing per host |
| Set<Entry<Host, ArrayList<RestoreUpdateRecord>>> hostEntries |
| = mUpdatesByHost.entrySet(); |
| for (Entry<Host, ArrayList<RestoreUpdateRecord>> e : hostEntries) { |
| Host host = e.getKey(); |
| if (host.uid > 0) { |
| ArrayList<RestoreUpdateRecord> updates = e.getValue(); |
| final int pending = countPendingUpdates(updates); |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, "Host " + host + " pending: " + pending); |
| } |
| if (pending > 0) { |
| int[] oldIds = new int[pending]; |
| int[] newIds = new int[pending]; |
| final int N = updates.size(); |
| int nextPending = 0; |
| for (int i = 0; i < N; i++) { |
| RestoreUpdateRecord r = updates.get(i); |
| if (!r.notified) { |
| r.notified = true; |
| oldIds[nextPending] = r.oldId; |
| newIds[nextPending] = r.newId; |
| nextPending++; |
| if (DEBUG_BACKUP) { |
| Slog.i(TAG, " " + r.oldId + " => " + r.newId); |
| } |
| } |
| } |
| sendWidgetRestoreBroadcast(AppWidgetManager.ACTION_APPWIDGET_HOST_RESTORED, |
| null, host, oldIds, newIds, userHandle); |
| } |
| } |
| } |
| } |
| } |
| |
| private int countPendingUpdates(ArrayList<RestoreUpdateRecord> updates) { |
| int pending = 0; |
| final int N = updates.size(); |
| for (int i = 0; i < N; i++) { |
| RestoreUpdateRecord r = updates.get(i); |
| if (!r.notified) { |
| pending++; |
| } |
| } |
| return pending; |
| } |
| |
| void sendWidgetRestoreBroadcast(String action, Provider provider, Host host, |
| int[] oldIds, int[] newIds, UserHandle userHandle) { |
| Intent intent = new Intent(action); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_OLD_IDS, oldIds); |
| intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, newIds); |
| if (provider != null) { |
| intent.setComponent(provider.info.provider); |
| mContext.sendBroadcastAsUser(intent, userHandle); |
| } |
| if (host != null) { |
| intent.setComponent(null); |
| intent.setPackage(host.packageName); |
| intent.putExtra(AppWidgetManager.EXTRA_HOST_ID, host.hostId); |
| mContext.sendBroadcastAsUser(intent, userHandle); |
| } |
| } |
| |
| private Provider parseProviderInfoXml(ComponentName component, ResolveInfo ri) { |
| Provider p = null; |
| |
| ActivityInfo activityInfo = ri.activityInfo; |
| XmlResourceParser parser = null; |
| try { |
| parser = activityInfo.loadXmlMetaData(mContext.getPackageManager(), |
| AppWidgetManager.META_DATA_APPWIDGET_PROVIDER); |
| if (parser == null) { |
| Slog.w(TAG, "No " + AppWidgetManager.META_DATA_APPWIDGET_PROVIDER |
| + " meta-data for " + "AppWidget provider '" + component + '\''); |
| return null; |
| } |
| |
| AttributeSet attrs = Xml.asAttributeSet(parser); |
| |
| int type; |
| while ((type = parser.next()) != XmlPullParser.END_DOCUMENT |
| && type != XmlPullParser.START_TAG) { |
| // drain whitespace, comments, etc. |
| } |
| |
| String nodeName = parser.getName(); |
| if (!"appwidget-provider".equals(nodeName)) { |
| Slog.w(TAG, "Meta-data does not start with appwidget-provider tag for" |
| + " AppWidget provider '" + component + '\''); |
| return null; |
| } |
| |
| p = new Provider(); |
| AppWidgetProviderInfo info = p.info = new AppWidgetProviderInfo(); |
| info.provider = component; |
| p.uid = activityInfo.applicationInfo.uid; |
| |
| Resources res = mContext.getPackageManager() |
| .getResourcesForApplicationAsUser(activityInfo.packageName, mUserId); |
| |
| TypedArray sa = res.obtainAttributes(attrs, |
| com.android.internal.R.styleable.AppWidgetProviderInfo); |
| |
| // These dimensions has to be resolved in the application's context. |
| // We simply send back the raw complex data, which will be |
| // converted to dp in {@link AppWidgetManager#getAppWidgetInfo}. |
| TypedValue value = sa |
| .peekValue(com.android.internal.R.styleable.AppWidgetProviderInfo_minWidth); |
| info.minWidth = value != null ? value.data : 0; |
| value = sa.peekValue(com.android.internal.R.styleable.AppWidgetProviderInfo_minHeight); |
| info.minHeight = value != null ? value.data : 0; |
| value = sa.peekValue( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_minResizeWidth); |
| info.minResizeWidth = value != null ? value.data : info.minWidth; |
| value = sa.peekValue( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_minResizeHeight); |
| info.minResizeHeight = value != null ? value.data : info.minHeight; |
| info.updatePeriodMillis = sa.getInt( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_updatePeriodMillis, 0); |
| info.initialLayout = sa.getResourceId( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_initialLayout, 0); |
| info.initialKeyguardLayout = sa.getResourceId(com.android.internal.R.styleable. |
| AppWidgetProviderInfo_initialKeyguardLayout, 0); |
| String className = sa |
| .getString(com.android.internal.R.styleable.AppWidgetProviderInfo_configure); |
| if (className != null) { |
| info.configure = new ComponentName(component.getPackageName(), className); |
| } |
| info.label = activityInfo.loadLabel(mContext.getPackageManager()).toString(); |
| info.icon = ri.getIconResource(); |
| info.previewImage = sa.getResourceId( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_previewImage, 0); |
| info.autoAdvanceViewId = sa.getResourceId( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_autoAdvanceViewId, -1); |
| info.resizeMode = sa.getInt( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_resizeMode, |
| AppWidgetProviderInfo.RESIZE_NONE); |
| info.widgetCategory = sa.getInt( |
| com.android.internal.R.styleable.AppWidgetProviderInfo_widgetCategory, |
| AppWidgetProviderInfo.WIDGET_CATEGORY_HOME_SCREEN); |
| |
| sa.recycle(); |
| } catch (Exception e) { |
| // Ok to catch Exception here, because anything going wrong because |
| // of what a client process passes to us should not be fatal for the |
| // system process. |
| Slog.w(TAG, "XML parsing failed for AppWidget provider '" + component + '\'', e); |
| return null; |
| } finally { |
| if (parser != null) |
| parser.close(); |
| } |
| return p; |
| } |
| |
| int getUidForPackage(String packageName) throws PackageManager.NameNotFoundException { |
| PackageInfo pkgInfo = null; |
| try { |
| pkgInfo = mPm.getPackageInfo(packageName, 0, mUserId); |
| } catch (RemoteException re) { |
| // Shouldn't happen, local call |
| } |
| if (pkgInfo == null || pkgInfo.applicationInfo == null) { |
| throw new PackageManager.NameNotFoundException(); |
| } |
| return pkgInfo.applicationInfo.uid; |
| } |
| |
| int enforceSystemOrCallingUid(String packageName) throws IllegalArgumentException { |
| int callingUid = Binder.getCallingUid(); |
| if (UserHandle.getAppId(callingUid) == Process.SYSTEM_UID || callingUid == 0) { |
| return callingUid; |
| } |
| return enforceCallingUid(packageName); |
| } |
| |
| int enforceCallingUid(String packageName) throws IllegalArgumentException { |
| int callingUid = Binder.getCallingUid(); |
| int packageUid; |
| try { |
| packageUid = getUidForPackage(packageName); |
| } catch (PackageManager.NameNotFoundException ex) { |
| throw new IllegalArgumentException("packageName and uid don't match packageName=" |
| + packageName); |
| } |
| if (!UserHandle.isSameApp(callingUid, packageUid)) { |
| throw new IllegalArgumentException("packageName and uid don't match packageName=" |
| + packageName); |
| } |
| return callingUid; |
| } |
| |
| void sendInitialBroadcasts() { |
| synchronized (mAppWidgetIds) { |
| ensureStateLoadedLocked(); |
| final int N = mInstalledProviders.size(); |
| for (int i = 0; i < N; i++) { |
| Provider p = mInstalledProviders.get(i); |
| if (p.instances.size() > 0) { |
| sendEnableIntentLocked(p); |
| int[] appWidgetIds = getAppWidgetIds(p); |
| sendUpdateIntentLocked(p, appWidgetIds); |
| registerForBroadcastsLocked(p, appWidgetIds); |
| } |
| } |
| } |
| } |
| |
| // only call from initialization -- it assumes that the data structures are all empty |
| void loadStateLocked() { |
| AtomicFile file = savedStateFile(); |
| try { |
| FileInputStream stream = file.openRead(); |
| readStateFromFileLocked(stream); |
| |
| if (stream != null) { |
| try { |
| stream.close(); |
| } catch (IOException e) { |
| Slog.w(TAG, "Failed to close state FileInputStream " + e); |
| } |
| } |
| } catch (FileNotFoundException e) { |
| Slog.w(TAG, "Failed to read state: " + e); |
| } |
| } |
| |
| void saveStateLocked() { |
| if (!mHasFeature) { |
| return; |
| } |
| AtomicFile file = savedStateFile(); |
| FileOutputStream stream; |
| try { |
| stream = file.startWrite(); |
| if (writeStateToFileLocked(stream)) { |
| file.finishWrite(stream); |
| } else { |
| file.failWrite(stream); |
| Slog.w(TAG, "Failed to save state, restoring backup."); |
| } |
| } catch (IOException e) { |
| Slog.w(TAG, "Failed open state file for write: " + e); |
| } |
| } |
| |
| boolean writeStateToFileLocked(FileOutputStream stream) { |
| int N; |
| |
| try { |
| XmlSerializer out = new FastXmlSerializer(); |
| out.setOutput(stream, "utf-8"); |
| out.startDocument(null, true); |
| out.startTag(null, "gs"); |
| out.attribute(null, "version", String.valueOf(CURRENT_VERSION)); |
| int providerIndex = 0; |
| N = mInstalledProviders.size(); |
| for (int i = 0; i < N; i++) { |
| Provider p = mInstalledProviders.get(i); |
| if (p.instances.size() > 0) { |
| serializeProvider(out, p); |
| p.tag = providerIndex; |
| providerIndex++; |
| } |
| } |
| |
| N = mHosts.size(); |
| for (int i = 0; i < N; i++) { |
| Host host = mHosts.get(i); |
| serializeHost(out, host); |
| host.tag = i; |
| } |
| |
| N = mAppWidgetIds.size(); |
| for (int i = 0; i < N; i++) { |
| AppWidgetId id = mAppWidgetIds.get(i); |
| serializeAppWidgetId(out, id); |
| } |
| |
| Iterator<String> it = mPackagesWithBindWidgetPermission.iterator(); |
| while (it.hasNext()) { |
| out.startTag(null, "b"); |
| out.attribute(null, "packageName", it.next()); |
| out.endTag(null, "b"); |
| } |
| |
| out.endTag(null, "gs"); |
| |
| out.endDocument(); |
| return true; |
| } catch (IOException e) { |
| Slog.w(TAG, "Failed to write state: " + e); |
| return false; |
| } |
| } |
| |
| @SuppressWarnings("unused") |
| void readStateFromFileLocked(FileInputStream stream) { |
| boolean success = false; |
| int version = 0; |
| try { |
| XmlPullParser parser = Xml.newPullParser(); |
| parser.setInput(stream, null); |
| |
| int type; |
| int providerIndex = 0; |
| HashMap<Integer, Provider> loadedProviders = new HashMap<Integer, Provider>(); |
| do { |
| type = parser.next(); |
| if (type == XmlPullParser.START_TAG) { |
| String tag = parser.getName(); |
| if ("gs".equals(tag)) { |
| String attributeValue = parser.getAttributeValue(null, "version"); |
| try { |
| version = Integer.parseInt(attributeValue); |
| } catch (NumberFormatException e) { |
| version = 0; |
| } |
| } else if ("p".equals(tag)) { |
| // TODO: do we need to check that this package has the same signature |
| // as before? |
| String pkg = parser.getAttributeValue(null, "pkg"); |
| String cl = parser.getAttributeValue(null, "cl"); |
| |
| final IPackageManager packageManager = AppGlobals.getPackageManager(); |
| try { |
| packageManager.getReceiverInfo(new ComponentName(pkg, cl), 0, mUserId); |
| } catch (RemoteException e) { |
| String[] pkgs = mContext.getPackageManager() |
| .currentToCanonicalPackageNames(new String[] { pkg }); |
| pkg = pkgs[0]; |
| } |
| |
| Provider p = lookupProviderLocked(new ComponentName(pkg, cl)); |
| if (p == null && mSafeMode) { |
| // if we're in safe mode, make a temporary one |
| p = new Provider(); |
| p.info = new AppWidgetProviderInfo(); |
| p.info.provider = new ComponentName(pkg, cl); |
| p.zombie = true; |
| mInstalledProviders.add(p); |
| } |
| if (p != null) { |
| // if it wasn't uninstalled or something |
| loadedProviders.put(providerIndex, p); |
| } |
| providerIndex++; |
| } else if ("h".equals(tag)) { |
| Host host = new Host(); |
| |
| // TODO: do we need to check that this package has the same signature |
| // as before? |
| host.packageName = parser.getAttributeValue(null, "pkg"); |
| try { |
| host.uid = getUidForPackage(host.packageName); |
| } catch (PackageManager.NameNotFoundException ex) { |
| host.zombie = true; |
| } |
| if (!host.zombie || mSafeMode) { |
| // In safe mode, we don't discard the hosts we don't recognize |
| // so that they're not pruned from our list. Otherwise, we do. |
| host.hostId = Integer |
| .parseInt(parser.getAttributeValue(null, "id"), 16); |
| mHosts.add(host); |
| } |
| } else if ("b".equals(tag)) { |
| String packageName = parser.getAttributeValue(null, "packageName"); |
| if (packageName != null) { |
| mPackagesWithBindWidgetPermission.add(packageName); |
| } |
| } else if ("g".equals(tag)) { |
| AppWidgetId id = new AppWidgetId(); |
| id.appWidgetId = Integer.parseInt(parser.getAttributeValue(null, "id"), 16); |
| if (id.appWidgetId >= mNextAppWidgetId) { |
| mNextAppWidgetId = id.appWidgetId + 1; |
| } |
| |
| // restored ID is allowed to be absent |
| String restoredIdString = parser.getAttributeValue(null, "rid"); |
| id.restoredId = (restoredIdString == null) ? 0 |
| : Integer.parseInt(restoredIdString, 16); |
| |
| Bundle options = new Bundle(); |
| String minWidthString = parser.getAttributeValue(null, "min_width"); |
| if (minWidthString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, |
| Integer.parseInt(minWidthString, 16)); |
| } |
| String minHeightString = parser.getAttributeValue(null, "min_height"); |
| if (minHeightString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, |
| Integer.parseInt(minHeightString, 16)); |
| } |
| String maxWidthString = parser.getAttributeValue(null, "max_width"); |
| if (maxWidthString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, |
| Integer.parseInt(maxWidthString, 16)); |
| } |
| String maxHeightString = parser.getAttributeValue(null, "max_height"); |
| if (maxHeightString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, |
| Integer.parseInt(maxHeightString, 16)); |
| } |
| String categoryString = parser.getAttributeValue(null, "host_category"); |
| if (categoryString != null) { |
| options.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY, |
| Integer.parseInt(categoryString, 16)); |
| } |
| id.options = options; |
| |
| String providerString = parser.getAttributeValue(null, "p"); |
| if (providerString != null) { |
| // there's no provider if it hasn't been bound yet. |
| // maybe we don't have to save this, but it brings the system |
| // to the state it was in. |
| int pIndex = Integer.parseInt(providerString, 16); |
| id.provider = loadedProviders.get(pIndex); |
| if (false) { |
| Slog.d(TAG, "bound appWidgetId=" + id.appWidgetId + " to provider " |
| + pIndex + " which is " + id.provider); |
| } |
| if (id.provider == null) { |
| // This provider is gone. We just let the host figure out |
| // that this happened when it fails to load it. |
| continue; |
| } |
| } |
| |
| int hIndex = Integer.parseInt(parser.getAttributeValue(null, "h"), 16); |
| id.host = mHosts.get(hIndex); |
| if (id.host == null) { |
| // This host is gone. |
| continue; |
| } |
| |
| if (id.provider != null) { |
| id.provider.instances.add(id); |
| } |
| id.host.instances.add(id); |
| mAppWidgetIds.add(id); |
| } |
| } |
| } while (type != XmlPullParser.END_DOCUMENT); |
| success = true; |
| } catch (NullPointerException e) { |
| Slog.w(TAG, "failed parsing " + e); |
| } catch (NumberFormatException e) { |
| Slog.w(TAG, "failed parsing " + e); |
| } catch (XmlPullParserException e) { |
| Slog.w(TAG, "failed parsing " + e); |
| } catch (IOException e) { |
| Slog.w(TAG, "failed parsing " + e); |
| } catch (IndexOutOfBoundsException e) { |
| Slog.w(TAG, "failed parsing " + e); |
| } |
| |
| if (success) { |
| // delete any hosts that didn't manage to get connected (should happen) |
| // if it matters, they'll be reconnected. |
| for (int i = mHosts.size() - 1; i >= 0; i--) { |
| pruneHostLocked(mHosts.get(i)); |
| } |
| // upgrade the database if needed |
| performUpgrade(version); |
| } else { |
| // failed reading, clean up |
| Slog.w(TAG, "Failed to read state, clearing widgets and hosts."); |
| |
| mAppWidgetIds.clear(); |
| mHosts.clear(); |
| final int N = mInstalledProviders.size(); |
| for (int i = 0; i < N; i++) { |
| mInstalledProviders.get(i).instances.clear(); |
| } |
| } |
| } |
| |
| private void performUpgrade(int fromVersion) { |
| if (fromVersion < CURRENT_VERSION) { |
| Slog.v(TAG, "Upgrading widget database from " + fromVersion + " to " + CURRENT_VERSION |
| + " for user " + mUserId); |
| } |
| |
| int version = fromVersion; |
| |
| // Update 1: keyguard moved from package "android" to "com.android.keyguard" |
| if (version == 0) { |
| for (int i = 0; i < mHosts.size(); i++) { |
| Host host = mHosts.get(i); |
| if (host != null && "android".equals(host.packageName) |
| && host.hostId == KEYGUARD_HOST_ID) { |
| host.packageName = KEYGUARD_HOST_PACKAGE; |
| } |
| } |
| version = 1; |
| } |
| |
| if (version != CURRENT_VERSION) { |
| throw new IllegalStateException("Failed to upgrade widget database"); |
| } |
| } |
| |
| static File getSettingsFile(int userId) { |
| return new File(Environment.getUserSystemDirectory(userId), SETTINGS_FILENAME); |
| } |
| |
| AtomicFile savedStateFile() { |
| File dir = Environment.getUserSystemDirectory(mUserId); |
| File settingsFile = getSettingsFile(mUserId); |
| if (!settingsFile.exists() && mUserId == 0) { |
| if (!dir.exists()) { |
| dir.mkdirs(); |
| } |
| // Migrate old data |
| File oldFile = new File("/data/system/" + SETTINGS_FILENAME); |
| // Method doesn't throw an exception on failure. Ignore any errors |
| // in moving the file (like non-existence) |
| oldFile.renameTo(settingsFile); |
| } |
| return new AtomicFile(settingsFile); |
| } |
| |
| void onUserStopping() { |
| // prune the ones we don't want to keep |
| int N = mInstalledProviders.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| Provider p = mInstalledProviders.get(i); |
| cancelBroadcasts(p); |
| } |
| } |
| |
| void onUserRemoved() { |
| getSettingsFile(mUserId).delete(); |
| } |
| |
| boolean addProvidersForPackageLocked(String pkgName) { |
| boolean providersAdded = false; |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); |
| intent.setPackage(pkgName); |
| List<ResolveInfo> broadcastReceivers; |
| try { |
| broadcastReceivers = mPm.queryIntentReceivers(intent, |
| intent.resolveTypeIfNeeded(mContext.getContentResolver()), |
| PackageManager.GET_META_DATA, mUserId); |
| } catch (RemoteException re) { |
| // Shouldn't happen, local call |
| return false; |
| } |
| final int N = broadcastReceivers == null ? 0 : broadcastReceivers.size(); |
| for (int i = 0; i < N; i++) { |
| ResolveInfo ri = broadcastReceivers.get(i); |
| ActivityInfo ai = ri.activityInfo; |
| if ((ai.applicationInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) { |
| continue; |
| } |
| if (pkgName.equals(ai.packageName)) { |
| providersAdded = addProviderLocked(ri); |
| } |
| } |
| |
| return providersAdded; |
| } |
| |
| /** |
| * Updates all providers with the specified package names, and records any providers that were |
| * pruned. |
| * |
| * @return whether any providers were updated |
| */ |
| boolean updateProvidersForPackageLocked(String pkgName, Set<ComponentName> removedProviders) { |
| boolean providersUpdated = false; |
| HashSet<String> keep = new HashSet<String>(); |
| Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); |
| intent.setPackage(pkgName); |
| List<ResolveInfo> broadcastReceivers; |
| try { |
| broadcastReceivers = mPm.queryIntentReceivers(intent, |
| intent.resolveTypeIfNeeded(mContext.getContentResolver()), |
| PackageManager.GET_META_DATA, mUserId); |
| } catch (RemoteException re) { |
| // Shouldn't happen, local call |
| return false; |
| } |
| |
| // add the missing ones and collect which ones to keep |
| int N = broadcastReceivers == null ? 0 : broadcastReceivers.size(); |
| for (int i = 0; i < N; i++) { |
| ResolveInfo ri = broadcastReceivers.get(i); |
| ActivityInfo ai = ri.activityInfo; |
| if ((ai.applicationInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) { |
| continue; |
| } |
| if (pkgName.equals(ai.packageName)) { |
| ComponentName component = new ComponentName(ai.packageName, ai.name); |
| Provider p = lookupProviderLocked(component); |
| if (p == null) { |
| if (addProviderLocked(ri)) { |
| keep.add(ai.name); |
| providersUpdated = true; |
| } |
| } else { |
| Provider parsed = parseProviderInfoXml(component, ri); |
| if (parsed != null) { |
| keep.add(ai.name); |
| // Use the new AppWidgetProviderInfo. |
| p.info = parsed.info; |
| // If it's enabled |
| final int M = p.instances.size(); |
| if (M > 0) { |
| int[] appWidgetIds = getAppWidgetIds(p); |
| // Reschedule for the new updatePeriodMillis (don't worry about handling |
| // it specially if updatePeriodMillis didn't change because we just sent |
| // an update, and the next one will be updatePeriodMillis from now). |
| cancelBroadcasts(p); |
| registerForBroadcastsLocked(p, appWidgetIds); |
| // If it's currently showing, call back with the new |
| // AppWidgetProviderInfo. |
| for (int j = 0; j < M; j++) { |
| AppWidgetId id = p.instances.get(j); |
| id.views = null; |
| if (id.host != null && id.host.callbacks != null) { |
| try { |
| id.host.callbacks.providerChanged(id.appWidgetId, p.info, |
| mUserId); |
| } catch (RemoteException ex) { |
| // It failed; remove the callback. No need to prune because |
| // we know that this host is still referenced by this |
| // instance. |
| id.host.callbacks = null; |
| } |
| } |
| } |
| // Now that we've told the host, push out an update. |
| sendUpdateIntentLocked(p, appWidgetIds); |
| providersUpdated = true; |
| } |
| } |
| } |
| } |
| } |
| |
| // prune the ones we don't want to keep |
| N = mInstalledProviders.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| Provider p = mInstalledProviders.get(i); |
| if (pkgName.equals(p.info.provider.getPackageName()) |
| && !keep.contains(p.info.provider.getClassName())) { |
| if (removedProviders != null) { |
| removedProviders.add(p.info.provider); |
| } |
| removeProviderLocked(i, p); |
| providersUpdated = true; |
| } |
| } |
| |
| return providersUpdated; |
| } |
| |
| boolean removeProvidersForPackageLocked(String pkgName) { |
| boolean providersRemoved = false; |
| int N = mInstalledProviders.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| Provider p = mInstalledProviders.get(i); |
| if (pkgName.equals(p.info.provider.getPackageName())) { |
| removeProviderLocked(i, p); |
| providersRemoved = true; |
| } |
| } |
| |
| // Delete the hosts for this package too |
| // |
| // By now, we have removed any AppWidgets that were in any hosts here, |
| // so we don't need to worry about sending DISABLE broadcasts to them. |
| N = mHosts.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| Host host = mHosts.get(i); |
| if (pkgName.equals(host.packageName)) { |
| deleteHostLocked(host); |
| } |
| } |
| |
| return providersRemoved; |
| } |
| |
| void notifyHostsForProvidersChangedLocked() { |
| final int N = mHosts.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| Host host = mHosts.get(i); |
| try { |
| if (host.callbacks != null) { |
| host.callbacks.providersChanged(mUserId); |
| } |
| } catch (RemoteException ex) { |
| // It failed; remove the callback. No need to prune because |
| // we know that this host is still referenced by this |
| // instance. |
| host.callbacks = null; |
| } |
| } |
| } |
| } |
