| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.launcher3; |
| |
| import static com.android.launcher3.provider.LauncherDbUtils.copyTable; |
| import static com.android.launcher3.provider.LauncherDbUtils.dropTable; |
| import static com.android.launcher3.provider.LauncherDbUtils.tableExists; |
| |
| import android.annotation.TargetApi; |
| import android.app.backup.BackupManager; |
| import android.appwidget.AppWidgetHost; |
| import android.appwidget.AppWidgetManager; |
| import android.content.ComponentName; |
| import android.content.ContentProvider; |
| import android.content.ContentProviderOperation; |
| import android.content.ContentProviderResult; |
| import android.content.ContentUris; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.OperationApplicationException; |
| import android.content.SharedPreferences; |
| import android.content.pm.ProviderInfo; |
| import android.content.res.Resources; |
| import android.database.Cursor; |
| import android.database.DatabaseUtils; |
| import android.database.SQLException; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteQueryBuilder; |
| import android.database.sqlite.SQLiteStatement; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.os.Process; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.BaseColumns; |
| import android.provider.Settings; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.util.Xml; |
| |
| import com.android.launcher3.AutoInstallsLayout.LayoutParserCallback; |
| import com.android.launcher3.LauncherSettings.Favorites; |
| import com.android.launcher3.config.FeatureFlags; |
| import com.android.launcher3.logging.FileLog; |
| import com.android.launcher3.model.DbDowngradeHelper; |
| import com.android.launcher3.pm.UserCache; |
| import com.android.launcher3.provider.LauncherDbUtils; |
| import com.android.launcher3.provider.LauncherDbUtils.SQLiteTransaction; |
| import com.android.launcher3.provider.RestoreDbTask; |
| import com.android.launcher3.util.IOUtils; |
| import com.android.launcher3.util.IntArray; |
| import com.android.launcher3.util.IntSet; |
| import com.android.launcher3.util.NoLocaleSQLiteHelper; |
| import com.android.launcher3.util.PackageManagerHelper; |
| import com.android.launcher3.util.Thunk; |
| import com.android.launcher3.widget.LauncherAppWidgetHost; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.InputStream; |
| import java.io.PrintWriter; |
| import java.io.StringReader; |
| import java.net.URISyntaxException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Locale; |
| import java.util.concurrent.TimeUnit; |
| import java.util.function.Supplier; |
| |
| public class LauncherProvider extends ContentProvider { |
| private static final String TAG = "LauncherProvider"; |
| private static final boolean LOGD = false; |
| |
| private static final String DOWNGRADE_SCHEMA_FILE = "downgrade_schema.json"; |
| private static final long RESTORE_BACKUP_TABLE_DELAY = TimeUnit.SECONDS.toMillis(30); |
| |
| /** |
| * Represents the schema of the database. Changes in scheme need not be backwards compatible. |
| * When increasing the scheme version, ensure that downgrade_schema.json is updated |
| */ |
| public static final int SCHEMA_VERSION = 30; |
| |
| public static final String AUTHORITY = BuildConfig.APPLICATION_ID + ".settings"; |
| public static final String KEY_LAYOUT_PROVIDER_AUTHORITY = "KEY_LAYOUT_PROVIDER_AUTHORITY"; |
| |
| static final String EMPTY_DATABASE_CREATED = "EMPTY_DATABASE_CREATED"; |
| |
| protected DatabaseHelper mOpenHelper; |
| protected String mProviderAuthority; |
| |
| private long mLastRestoreTimestamp = 0L; |
| |
| /** |
| * $ adb shell dumpsys activity provider com.android.launcher3 |
| */ |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter writer, String[] args) { |
| LauncherAppState appState = LauncherAppState.getInstanceNoCreate(); |
| if (appState == null || !appState.getModel().isModelLoaded()) { |
| return; |
| } |
| appState.getModel().dumpState("", fd, writer, args); |
| } |
| |
| @Override |
| public boolean onCreate() { |
| if (FeatureFlags.IS_STUDIO_BUILD) { |
| Log.d(TAG, "Launcher process started"); |
| } |
| |
| // The content provider exists for the entire duration of the launcher main process and |
| // is the first component to get created. |
| MainProcessInitializer.initialize(getContext().getApplicationContext()); |
| return true; |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| SqlArguments args = new SqlArguments(uri, null, null); |
| if (TextUtils.isEmpty(args.where)) { |
| return "vnd.android.cursor.dir/" + args.table; |
| } else { |
| return "vnd.android.cursor.item/" + args.table; |
| } |
| } |
| |
| /** |
| * Overridden in tests |
| */ |
| protected synchronized void createDbIfNotExists() { |
| if (mOpenHelper == null) { |
| mOpenHelper = DatabaseHelper.createDatabaseHelper( |
| getContext(), false /* forMigration */); |
| |
| RestoreDbTask.restoreIfNeeded(getContext(), mOpenHelper); |
| } |
| } |
| |
| private synchronized boolean prepForMigration(String dbFile, String targetTableName, |
| Supplier<DatabaseHelper> src, Supplier<DatabaseHelper> dst) { |
| if (TextUtils.equals(dbFile, mOpenHelper.getDatabaseName())) { |
| return false; |
| } |
| |
| final DatabaseHelper helper = src.get(); |
| mOpenHelper = dst.get(); |
| copyTable(helper.getReadableDatabase(), Favorites.TABLE_NAME, |
| mOpenHelper.getWritableDatabase(), targetTableName, getContext()); |
| helper.close(); |
| return true; |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, |
| String[] selectionArgs, String sortOrder) { |
| createDbIfNotExists(); |
| |
| SqlArguments args = new SqlArguments(uri, selection, selectionArgs); |
| SQLiteQueryBuilder qb = new SQLiteQueryBuilder(); |
| qb.setTables(args.table); |
| |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| Cursor result = qb.query(db, projection, args.where, args.args, null, null, sortOrder); |
| final Bundle extra = new Bundle(); |
| extra.putString(LauncherSettings.Settings.EXTRA_DB_NAME, mOpenHelper.getDatabaseName()); |
| result.setExtras(extra); |
| result.setNotificationUri(getContext().getContentResolver(), uri); |
| |
| return result; |
| } |
| |
| @Thunk static int dbInsertAndCheck(DatabaseHelper helper, |
| SQLiteDatabase db, String table, String nullColumnHack, ContentValues values) { |
| if (values == null) { |
| throw new RuntimeException("Error: attempting to insert null values"); |
| } |
| if (!values.containsKey(LauncherSettings.Favorites._ID)) { |
| throw new RuntimeException("Error: attempting to add item without specifying an id"); |
| } |
| helper.checkId(values); |
| return (int) db.insert(table, nullColumnHack, values); |
| } |
| |
| private void reloadLauncherIfExternal() { |
| if (Binder.getCallingPid() != Process.myPid()) { |
| LauncherAppState app = LauncherAppState.getInstanceNoCreate(); |
| if (app != null) { |
| app.getModel().forceReload(); |
| } |
| } |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues initialValues) { |
| createDbIfNotExists(); |
| SqlArguments args = new SqlArguments(uri); |
| |
| // In very limited cases, we support system|signature permission apps to modify the db. |
| if (Binder.getCallingPid() != Process.myPid()) { |
| if (!initializeExternalAdd(initialValues)) { |
| return null; |
| } |
| } |
| |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| addModifiedTime(initialValues); |
| final int rowId = dbInsertAndCheck(mOpenHelper, db, args.table, null, initialValues); |
| if (rowId < 0) return null; |
| onAddOrDeleteOp(db); |
| |
| uri = ContentUris.withAppendedId(uri, rowId); |
| reloadLauncherIfExternal(); |
| return uri; |
| } |
| |
| private boolean initializeExternalAdd(ContentValues values) { |
| // 1. Ensure that externally added items have a valid item id |
| int id = mOpenHelper.generateNewItemId(); |
| values.put(LauncherSettings.Favorites._ID, id); |
| |
| // 2. In the case of an app widget, and if no app widget id is specified, we |
| // attempt allocate and bind the widget. |
| Integer itemType = values.getAsInteger(LauncherSettings.Favorites.ITEM_TYPE); |
| if (itemType != null && |
| itemType.intValue() == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && |
| !values.containsKey(LauncherSettings.Favorites.APPWIDGET_ID)) { |
| |
| final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(getContext()); |
| ComponentName cn = ComponentName.unflattenFromString( |
| values.getAsString(Favorites.APPWIDGET_PROVIDER)); |
| |
| if (cn != null) { |
| try { |
| AppWidgetHost widgetHost = mOpenHelper.newLauncherWidgetHost(); |
| int appWidgetId = widgetHost.allocateAppWidgetId(); |
| values.put(LauncherSettings.Favorites.APPWIDGET_ID, appWidgetId); |
| if (!appWidgetManager.bindAppWidgetIdIfAllowed(appWidgetId,cn)) { |
| widgetHost.deleteAppWidgetId(appWidgetId); |
| return false; |
| } |
| } catch (RuntimeException e) { |
| Log.e(TAG, "Failed to initialize external widget", e); |
| return false; |
| } |
| } else { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public int bulkInsert(Uri uri, ContentValues[] values) { |
| createDbIfNotExists(); |
| SqlArguments args = new SqlArguments(uri); |
| |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| try (SQLiteTransaction t = new SQLiteTransaction(db)) { |
| int numValues = values.length; |
| for (int i = 0; i < numValues; i++) { |
| addModifiedTime(values[i]); |
| if (dbInsertAndCheck(mOpenHelper, db, args.table, null, values[i]) < 0) { |
| return 0; |
| } |
| } |
| onAddOrDeleteOp(db); |
| t.commit(); |
| } |
| |
| reloadLauncherIfExternal(); |
| return values.length; |
| } |
| |
| @TargetApi(Build.VERSION_CODES.M) |
| @Override |
| public ContentProviderResult[] applyBatch(ArrayList<ContentProviderOperation> operations) |
| throws OperationApplicationException { |
| createDbIfNotExists(); |
| try (SQLiteTransaction t = new SQLiteTransaction(mOpenHelper.getWritableDatabase())) { |
| boolean isAddOrDelete = false; |
| |
| final int numOperations = operations.size(); |
| final ContentProviderResult[] results = new ContentProviderResult[numOperations]; |
| for (int i = 0; i < numOperations; i++) { |
| ContentProviderOperation op = operations.get(i); |
| results[i] = op.apply(this, results, i); |
| |
| isAddOrDelete |= (op.isInsert() || op.isDelete()) && |
| results[i].count != null && results[i].count > 0; |
| } |
| if (isAddOrDelete) { |
| onAddOrDeleteOp(t.getDb()); |
| } |
| |
| t.commit(); |
| reloadLauncherIfExternal(); |
| return results; |
| } |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| createDbIfNotExists(); |
| SqlArguments args = new SqlArguments(uri, selection, selectionArgs); |
| |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| |
| if (Binder.getCallingPid() != Process.myPid() |
| && Favorites.TABLE_NAME.equalsIgnoreCase(args.table)) { |
| mOpenHelper.removeGhostWidgets(mOpenHelper.getWritableDatabase()); |
| } |
| int count = db.delete(args.table, args.where, args.args); |
| if (count > 0) { |
| onAddOrDeleteOp(db); |
| reloadLauncherIfExternal(); |
| } |
| return count; |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { |
| createDbIfNotExists(); |
| SqlArguments args = new SqlArguments(uri, selection, selectionArgs); |
| |
| addModifiedTime(values); |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| int count = db.update(args.table, values, args.where, args.args); |
| reloadLauncherIfExternal(); |
| return count; |
| } |
| |
| @Override |
| public Bundle call(String method, final String arg, final Bundle extras) { |
| if (Binder.getCallingUid() != Process.myUid()) { |
| return null; |
| } |
| createDbIfNotExists(); |
| |
| switch (method) { |
| case LauncherSettings.Settings.METHOD_CLEAR_EMPTY_DB_FLAG: { |
| clearFlagEmptyDbCreated(); |
| return null; |
| } |
| case LauncherSettings.Settings.METHOD_WAS_EMPTY_DB_CREATED : { |
| Bundle result = new Bundle(); |
| result.putBoolean(LauncherSettings.Settings.EXTRA_VALUE, |
| Utilities.getPrefs(getContext()).getBoolean( |
| mOpenHelper.getKey(EMPTY_DATABASE_CREATED), false)); |
| return result; |
| } |
| case LauncherSettings.Settings.METHOD_DELETE_EMPTY_FOLDERS: { |
| Bundle result = new Bundle(); |
| result.putIntArray(LauncherSettings.Settings.EXTRA_VALUE, deleteEmptyFolders() |
| .toArray()); |
| return result; |
| } |
| case LauncherSettings.Settings.METHOD_NEW_ITEM_ID: { |
| Bundle result = new Bundle(); |
| result.putInt(LauncherSettings.Settings.EXTRA_VALUE, |
| mOpenHelper.generateNewItemId()); |
| return result; |
| } |
| case LauncherSettings.Settings.METHOD_NEW_SCREEN_ID: { |
| Bundle result = new Bundle(); |
| result.putInt(LauncherSettings.Settings.EXTRA_VALUE, |
| mOpenHelper.getNewScreenId()); |
| return result; |
| } |
| case LauncherSettings.Settings.METHOD_CREATE_EMPTY_DB: { |
| mOpenHelper.createEmptyDB(mOpenHelper.getWritableDatabase()); |
| return null; |
| } |
| case LauncherSettings.Settings.METHOD_LOAD_DEFAULT_FAVORITES: { |
| loadDefaultFavoritesIfNecessary(); |
| return null; |
| } |
| case LauncherSettings.Settings.METHOD_REMOVE_GHOST_WIDGETS: { |
| mOpenHelper.removeGhostWidgets(mOpenHelper.getWritableDatabase()); |
| return null; |
| } |
| case LauncherSettings.Settings.METHOD_NEW_TRANSACTION: { |
| Bundle result = new Bundle(); |
| result.putBinder(LauncherSettings.Settings.EXTRA_VALUE, |
| new SQLiteTransaction(mOpenHelper.getWritableDatabase())); |
| return result; |
| } |
| case LauncherSettings.Settings.METHOD_REFRESH_BACKUP_TABLE: { |
| mOpenHelper.mBackupTableExists = tableExists(mOpenHelper.getReadableDatabase(), |
| Favorites.BACKUP_TABLE_NAME); |
| return null; |
| } |
| case LauncherSettings.Settings.METHOD_REFRESH_HOTSEAT_RESTORE_TABLE: { |
| mOpenHelper.mHotseatRestoreTableExists = tableExists( |
| mOpenHelper.getReadableDatabase(), Favorites.HYBRID_HOTSEAT_BACKUP_TABLE); |
| return null; |
| } |
| case LauncherSettings.Settings.METHOD_RESTORE_BACKUP_TABLE: { |
| final long ts = System.currentTimeMillis(); |
| if (ts - mLastRestoreTimestamp > RESTORE_BACKUP_TABLE_DELAY) { |
| mLastRestoreTimestamp = ts; |
| RestoreDbTask.restoreIfPossible( |
| getContext(), mOpenHelper, new BackupManager(getContext())); |
| } |
| return null; |
| } |
| case LauncherSettings.Settings.METHOD_UPDATE_CURRENT_OPEN_HELPER: { |
| Bundle result = new Bundle(); |
| result.putBoolean(LauncherSettings.Settings.EXTRA_VALUE, |
| prepForMigration( |
| InvariantDeviceProfile.INSTANCE.get(getContext()).dbFile, |
| Favorites.TMP_TABLE, |
| () -> mOpenHelper, |
| () -> DatabaseHelper.createDatabaseHelper( |
| getContext(), true /* forMigration */))); |
| return result; |
| } |
| case LauncherSettings.Settings.METHOD_PREP_FOR_PREVIEW: { |
| Bundle result = new Bundle(); |
| result.putBoolean(LauncherSettings.Settings.EXTRA_VALUE, |
| prepForMigration( |
| arg /* dbFile */, |
| Favorites.PREVIEW_TABLE_NAME, |
| () -> DatabaseHelper.createDatabaseHelper( |
| getContext(), arg, true /* forMigration */), |
| () -> mOpenHelper)); |
| return result; |
| } |
| case LauncherSettings.Settings.METHOD_SWITCH_DATABASE: { |
| if (TextUtils.equals(arg, mOpenHelper.getDatabaseName())) return null; |
| final DatabaseHelper helper = mOpenHelper; |
| if (extras == null || !extras.containsKey(KEY_LAYOUT_PROVIDER_AUTHORITY)) { |
| mProviderAuthority = null; |
| } else { |
| mProviderAuthority = extras.getString(KEY_LAYOUT_PROVIDER_AUTHORITY); |
| } |
| mOpenHelper = DatabaseHelper.createDatabaseHelper( |
| getContext(), arg, false /* forMigration */); |
| helper.close(); |
| LauncherAppState app = LauncherAppState.getInstanceNoCreate(); |
| if (app == null) return null; |
| app.getModel().forceReload(); |
| return null; |
| } |
| } |
| return null; |
| } |
| |
| private void onAddOrDeleteOp(SQLiteDatabase db) { |
| mOpenHelper.onAddOrDeleteOp(db); |
| } |
| |
| /** |
| * Deletes any empty folder from the DB. |
| * @return Ids of deleted folders. |
| */ |
| private IntArray deleteEmptyFolders() { |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| try (SQLiteTransaction t = new SQLiteTransaction(db)) { |
| // Select folders whose id do not match any container value. |
| String selection = LauncherSettings.Favorites.ITEM_TYPE + " = " |
| + LauncherSettings.Favorites.ITEM_TYPE_FOLDER + " AND " |
| + LauncherSettings.Favorites._ID + " NOT IN (SELECT " + |
| LauncherSettings.Favorites.CONTAINER + " FROM " |
| + Favorites.TABLE_NAME + ")"; |
| |
| IntArray folderIds = LauncherDbUtils.queryIntArray(false, db, Favorites.TABLE_NAME, |
| Favorites._ID, selection, null, null); |
| if (!folderIds.isEmpty()) { |
| db.delete(Favorites.TABLE_NAME, Utilities.createDbSelectionQuery( |
| LauncherSettings.Favorites._ID, folderIds), null); |
| } |
| t.commit(); |
| return folderIds; |
| } catch (SQLException ex) { |
| Log.e(TAG, ex.getMessage(), ex); |
| return new IntArray(); |
| } |
| } |
| |
| @Thunk static void addModifiedTime(ContentValues values) { |
| values.put(LauncherSettings.Favorites.MODIFIED, System.currentTimeMillis()); |
| } |
| |
| private void clearFlagEmptyDbCreated() { |
| Utilities.getPrefs(getContext()).edit() |
| .remove(mOpenHelper.getKey(EMPTY_DATABASE_CREATED)).commit(); |
| } |
| |
| /** |
| * Loads the default workspace based on the following priority scheme: |
| * 1) From the app restrictions |
| * 2) From a package provided by play store |
| * 3) From a partner configuration APK, already in the system image |
| * 4) The default configuration for the particular device |
| */ |
| synchronized private void loadDefaultFavoritesIfNecessary() { |
| SharedPreferences sp = Utilities.getPrefs(getContext()); |
| |
| if (sp.getBoolean(mOpenHelper.getKey(EMPTY_DATABASE_CREATED), false)) { |
| Log.d(TAG, "loading default workspace"); |
| |
| AppWidgetHost widgetHost = mOpenHelper.newLauncherWidgetHost(); |
| AutoInstallsLayout loader = createWorkspaceLoaderFromAppRestriction(widgetHost); |
| if (loader == null) { |
| loader = AutoInstallsLayout.get(getContext(),widgetHost, mOpenHelper); |
| } |
| if (loader == null) { |
| final Partner partner = Partner.get(getContext().getPackageManager()); |
| if (partner != null && partner.hasDefaultLayout()) { |
| final Resources partnerRes = partner.getResources(); |
| int workspaceResId = partnerRes.getIdentifier(Partner.RES_DEFAULT_LAYOUT, |
| "xml", partner.getPackageName()); |
| if (workspaceResId != 0) { |
| loader = new DefaultLayoutParser(getContext(), widgetHost, |
| mOpenHelper, partnerRes, workspaceResId); |
| } |
| } |
| } |
| |
| final boolean usingExternallyProvidedLayout = loader != null; |
| if (loader == null) { |
| loader = getDefaultLayoutParser(widgetHost); |
| } |
| |
| // There might be some partially restored DB items, due to buggy restore logic in |
| // previous versions of launcher. |
| mOpenHelper.createEmptyDB(mOpenHelper.getWritableDatabase()); |
| // Populate favorites table with initial favorites |
| if ((mOpenHelper.loadFavorites(mOpenHelper.getWritableDatabase(), loader) <= 0) |
| && usingExternallyProvidedLayout) { |
| // Unable to load external layout. Cleanup and load the internal layout. |
| mOpenHelper.createEmptyDB(mOpenHelper.getWritableDatabase()); |
| mOpenHelper.loadFavorites(mOpenHelper.getWritableDatabase(), |
| getDefaultLayoutParser(widgetHost)); |
| } |
| clearFlagEmptyDbCreated(); |
| } |
| } |
| |
| /** |
| * Creates workspace loader from an XML resource listed in the app restrictions. |
| * |
| * @return the loader if the restrictions are set and the resource exists; null otherwise. |
| */ |
| private AutoInstallsLayout createWorkspaceLoaderFromAppRestriction(AppWidgetHost widgetHost) { |
| Context ctx = getContext(); |
| final String authority; |
| if (!TextUtils.isEmpty(mProviderAuthority)) { |
| authority = mProviderAuthority; |
| } else { |
| authority = Settings.Secure.getString(ctx.getContentResolver(), |
| "launcher3.layout.provider"); |
| } |
| if (TextUtils.isEmpty(authority)) { |
| return null; |
| } |
| |
| ProviderInfo pi = ctx.getPackageManager().resolveContentProvider(authority, 0); |
| if (pi == null) { |
| Log.e(TAG, "No provider found for authority " + authority); |
| return null; |
| } |
| Uri uri = getLayoutUri(authority, ctx); |
| try (InputStream in = ctx.getContentResolver().openInputStream(uri)) { |
| // Read the full xml so that we fail early in case of any IO error. |
| String layout = new String(IOUtils.toByteArray(in)); |
| XmlPullParser parser = Xml.newPullParser(); |
| parser.setInput(new StringReader(layout)); |
| |
| Log.d(TAG, "Loading layout from " + authority); |
| return new AutoInstallsLayout(ctx, widgetHost, mOpenHelper, |
| ctx.getPackageManager().getResourcesForApplication(pi.applicationInfo), |
| () -> parser, AutoInstallsLayout.TAG_WORKSPACE); |
| } catch (Exception e) { |
| Log.e(TAG, "Error getting layout stream from: " + authority , e); |
| return null; |
| } |
| } |
| |
| public static Uri getLayoutUri(String authority, Context ctx) { |
| InvariantDeviceProfile grid = LauncherAppState.getIDP(ctx); |
| return new Uri.Builder().scheme("content").authority(authority).path("launcher_layout") |
| .appendQueryParameter("version", "1") |
| .appendQueryParameter("gridWidth", Integer.toString(grid.numColumns)) |
| .appendQueryParameter("gridHeight", Integer.toString(grid.numRows)) |
| .appendQueryParameter("hotseatSize", Integer.toString(grid.numDatabaseHotseatIcons)) |
| .build(); |
| } |
| |
| private DefaultLayoutParser getDefaultLayoutParser(AppWidgetHost widgetHost) { |
| InvariantDeviceProfile idp = LauncherAppState.getIDP(getContext()); |
| int defaultLayout = idp.defaultLayoutId; |
| |
| if (getContext().getSystemService(UserManager.class).isDemoUser() |
| && idp.demoModeLayoutId != 0) { |
| defaultLayout = idp.demoModeLayoutId; |
| } |
| |
| return new DefaultLayoutParser(getContext(), widgetHost, |
| mOpenHelper, getContext().getResources(), defaultLayout); |
| } |
| |
| /** |
| * The class is subclassed in tests to create an in-memory db. |
| */ |
| public static class DatabaseHelper extends NoLocaleSQLiteHelper implements |
| LayoutParserCallback { |
| private final Context mContext; |
| private final boolean mForMigration; |
| private int mMaxItemId = -1; |
| private boolean mBackupTableExists; |
| private boolean mHotseatRestoreTableExists; |
| |
| static DatabaseHelper createDatabaseHelper(Context context, boolean forMigration) { |
| return createDatabaseHelper(context, null, forMigration); |
| } |
| |
| static DatabaseHelper createDatabaseHelper(Context context, String dbName, |
| boolean forMigration) { |
| if (dbName == null) { |
| dbName = InvariantDeviceProfile.INSTANCE.get(context).dbFile; |
| } |
| DatabaseHelper databaseHelper = new DatabaseHelper(context, dbName, forMigration); |
| // Table creation sometimes fails silently, which leads to a crash loop. |
| // This way, we will try to create a table every time after crash, so the device |
| // would eventually be able to recover. |
| if (!tableExists(databaseHelper.getReadableDatabase(), Favorites.TABLE_NAME)) { |
| Log.e(TAG, "Tables are missing after onCreate has been called. Trying to recreate"); |
| // This operation is a no-op if the table already exists. |
| databaseHelper.addFavoritesTable(databaseHelper.getWritableDatabase(), true); |
| } |
| databaseHelper.mHotseatRestoreTableExists = tableExists( |
| databaseHelper.getReadableDatabase(), Favorites.HYBRID_HOTSEAT_BACKUP_TABLE); |
| |
| databaseHelper.initIds(); |
| return databaseHelper; |
| } |
| |
| /** |
| * Constructor used in tests and for restore. |
| */ |
| public DatabaseHelper(Context context, String dbName, boolean forMigration) { |
| super(context, dbName, SCHEMA_VERSION); |
| mContext = context; |
| mForMigration = forMigration; |
| } |
| |
| protected void initIds() { |
| // In the case where neither onCreate nor onUpgrade gets called, we read the maxId from |
| // the DB here |
| if (mMaxItemId == -1) { |
| mMaxItemId = initializeMaxItemId(getWritableDatabase()); |
| } |
| } |
| |
| @Override |
| public void onCreate(SQLiteDatabase db) { |
| if (LOGD) Log.d(TAG, "creating new launcher database"); |
| |
| mMaxItemId = 1; |
| |
| addFavoritesTable(db, false); |
| |
| // Fresh and clean launcher DB. |
| mMaxItemId = initializeMaxItemId(db); |
| if (!mForMigration) { |
| onEmptyDbCreated(); |
| } |
| } |
| |
| protected void onAddOrDeleteOp(SQLiteDatabase db) { |
| if (mBackupTableExists) { |
| dropTable(db, Favorites.BACKUP_TABLE_NAME); |
| mBackupTableExists = false; |
| } |
| if (mHotseatRestoreTableExists) { |
| dropTable(db, Favorites.HYBRID_HOTSEAT_BACKUP_TABLE); |
| mHotseatRestoreTableExists = false; |
| } |
| } |
| |
| /** |
| * Re-composite given key in respect to database. If the current db is |
| * {@link LauncherFiles#LAUNCHER_DB}, return the key as-is. Otherwise append the db name to |
| * given key. e.g. consider key="EMPTY_DATABASE_CREATED", dbName="minimal.db", the returning |
| * string will be "EMPTY_DATABASE_CREATED@minimal.db". |
| */ |
| String getKey(final String key) { |
| if (TextUtils.equals(getDatabaseName(), LauncherFiles.LAUNCHER_DB)) { |
| return key; |
| } |
| return key + "@" + getDatabaseName(); |
| } |
| |
| /** |
| * Overriden in tests. |
| */ |
| protected void onEmptyDbCreated() { |
| // Set the flag for empty DB |
| Utilities.getPrefs(mContext).edit().putBoolean(getKey(EMPTY_DATABASE_CREATED), true) |
| .commit(); |
| } |
| |
| public long getSerialNumberForUser(UserHandle user) { |
| return UserCache.INSTANCE.get(mContext).getSerialNumberForUser(user); |
| } |
| |
| public long getDefaultUserSerial() { |
| return getSerialNumberForUser(Process.myUserHandle()); |
| } |
| |
| private void addFavoritesTable(SQLiteDatabase db, boolean optional) { |
| Favorites.addTableToDb(db, getDefaultUserSerial(), optional); |
| } |
| |
| @Override |
| public void onOpen(SQLiteDatabase db) { |
| super.onOpen(db); |
| |
| File schemaFile = mContext.getFileStreamPath(DOWNGRADE_SCHEMA_FILE); |
| if (!schemaFile.exists()) { |
| handleOneTimeDataUpgrade(db); |
| } |
| DbDowngradeHelper.updateSchemaFile(schemaFile, SCHEMA_VERSION, mContext); |
| } |
| |
| /** |
| * One-time data updated before support of onDowngrade was added. This update is backwards |
| * compatible and can safely be run multiple times. |
| * Note: No new logic should be added here after release, as the new logic might not get |
| * executed on an existing device. |
| * TODO: Move this to db upgrade path, once the downgrade path is released. |
| */ |
| protected void handleOneTimeDataUpgrade(SQLiteDatabase db) { |
| // Remove "profile extra" |
| UserCache um = UserCache.INSTANCE.get(mContext); |
| for (UserHandle user : um.getUserProfiles()) { |
| long serial = um.getSerialNumberForUser(user); |
| String sql = "update favorites set intent = replace(intent, " |
| + "';l.profile=" + serial + ";', ';') where itemType = 0;"; |
| db.execSQL(sql); |
| } |
| } |
| |
| @Override |
| public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| if (LOGD) Log.d(TAG, "onUpgrade triggered: " + oldVersion); |
| switch (oldVersion) { |
| // The version cannot be lower that 12, as Launcher3 never supported a lower |
| // version of the DB. |
| case 12: |
| // No-op |
| case 13: { |
| try (SQLiteTransaction t = new SQLiteTransaction(db)) { |
| // Insert new column for holding widget provider name |
| db.execSQL("ALTER TABLE favorites " + |
| "ADD COLUMN appWidgetProvider TEXT;"); |
| t.commit(); |
| } catch (SQLException ex) { |
| Log.e(TAG, ex.getMessage(), ex); |
| // Old version remains, which means we wipe old data |
| break; |
| } |
| } |
| case 14: { |
| if (!addIntegerColumn(db, Favorites.MODIFIED, 0)) { |
| // Old version remains, which means we wipe old data |
| break; |
| } |
| } |
| case 15: { |
| if (!addIntegerColumn(db, Favorites.RESTORED, 0)) { |
| // Old version remains, which means we wipe old data |
| break; |
| } |
| } |
| case 16: |
| // No-op |
| case 17: |
| // No-op |
| case 18: |
| // No-op |
| case 19: { |
| // Add userId column |
| if (!addIntegerColumn(db, Favorites.PROFILE_ID, getDefaultUserSerial())) { |
| // Old version remains, which means we wipe old data |
| break; |
| } |
| } |
| case 20: |
| if (!updateFolderItemsRank(db, true)) { |
| break; |
| } |
| case 21: |
| // No-op |
| case 22: { |
| if (!addIntegerColumn(db, Favorites.OPTIONS, 0)) { |
| // Old version remains, which means we wipe old data |
| break; |
| } |
| } |
| case 23: |
| // No-op |
| case 24: |
| // No-op |
| case 25: |
| convertShortcutsToLauncherActivities(db); |
| case 26: |
| // QSB was moved to the grid. Ignore overlapping items |
| case 27: { |
| // Update the favorites table so that the screen ids are ordered based on |
| // workspace page rank. |
| IntArray finalScreens = LauncherDbUtils.queryIntArray(false, db, |
| "workspaceScreens", BaseColumns._ID, null, null, "screenRank"); |
| int[] original = finalScreens.toArray(); |
| Arrays.sort(original); |
| String updatemap = ""; |
| for (int i = 0; i < original.length; i++) { |
| if (finalScreens.get(i) != original[i]) { |
| updatemap += String.format(Locale.ENGLISH, " WHEN %1$s=%2$d THEN %3$d", |
| Favorites.SCREEN, finalScreens.get(i), original[i]); |
| } |
| } |
| if (!TextUtils.isEmpty(updatemap)) { |
| String query = String.format(Locale.ENGLISH, |
| "UPDATE %1$s SET %2$s=CASE %3$s ELSE %2$s END WHERE %4$s = %5$d", |
| Favorites.TABLE_NAME, Favorites.SCREEN, updatemap, |
| Favorites.CONTAINER, Favorites.CONTAINER_DESKTOP); |
| db.execSQL(query); |
| } |
| dropTable(db, "workspaceScreens"); |
| } |
| case 28: { |
| boolean columnAdded = addIntegerColumn( |
| db, Favorites.APPWIDGET_SOURCE, Favorites.CONTAINER_UNKNOWN); |
| if (!columnAdded) { |
| // Old version remains, which means we wipe old data |
| break; |
| } |
| } |
| case 29: { |
| // Remove widget panel related leftover workspace items |
| db.delete(Favorites.TABLE_NAME, Utilities.createDbSelectionQuery( |
| Favorites.SCREEN, IntArray.wrap(-777, -778)), null); |
| } |
| case 30: { |
| // DB Upgraded successfully |
| return; |
| } |
| } |
| |
| // DB was not upgraded |
| Log.w(TAG, "Destroying all old data."); |
| createEmptyDB(db); |
| } |
| |
| @Override |
| public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| try { |
| DbDowngradeHelper.parse(mContext.getFileStreamPath(DOWNGRADE_SCHEMA_FILE)) |
| .onDowngrade(db, oldVersion, newVersion); |
| } catch (Exception e) { |
| Log.d(TAG, "Unable to downgrade from: " + oldVersion + " to " + newVersion + |
| ". Wiping databse.", e); |
| createEmptyDB(db); |
| } |
| } |
| |
| /** |
| * Clears all the data for a fresh start. |
| */ |
| public void createEmptyDB(SQLiteDatabase db) { |
| try (SQLiteTransaction t = new SQLiteTransaction(db)) { |
| dropTable(db, Favorites.TABLE_NAME); |
| dropTable(db, "workspaceScreens"); |
| onCreate(db); |
| t.commit(); |
| } |
| } |
| |
| /** |
| * Removes widgets which are registered to the Launcher's host, but are not present |
| * in our model. |
| */ |
| public void removeGhostWidgets(SQLiteDatabase db) { |
| // Get all existing widget ids. |
| final AppWidgetHost host = newLauncherWidgetHost(); |
| final int[] allWidgets; |
| try { |
| // Although the method was defined in O, it has existed since the beginning of time, |
| // so it might work on older platforms as well. |
| allWidgets = host.getAppWidgetIds(); |
| } catch (IncompatibleClassChangeError e) { |
| Log.e(TAG, "getAppWidgetIds not supported", e); |
| return; |
| } |
| final IntSet validWidgets = IntSet.wrap(LauncherDbUtils.queryIntArray(false, db, |
| Favorites.TABLE_NAME, Favorites.APPWIDGET_ID, |
| "itemType=" + Favorites.ITEM_TYPE_APPWIDGET, null, null)); |
| for (int widgetId : allWidgets) { |
| if (!validWidgets.contains(widgetId)) { |
| try { |
| FileLog.d(TAG, "Deleting invalid widget " + widgetId); |
| host.deleteAppWidgetId(widgetId); |
| } catch (RuntimeException e) { |
| // Ignore |
| } |
| } |
| } |
| } |
| |
| /** |
| * Replaces all shortcuts of type {@link Favorites#ITEM_TYPE_SHORTCUT} which have a valid |
| * launcher activity target with {@link Favorites#ITEM_TYPE_APPLICATION}. |
| */ |
| @Thunk void convertShortcutsToLauncherActivities(SQLiteDatabase db) { |
| try (SQLiteTransaction t = new SQLiteTransaction(db); |
| // Only consider the primary user as other users can't have a shortcut. |
| Cursor c = db.query(Favorites.TABLE_NAME, |
| new String[] { Favorites._ID, Favorites.INTENT}, |
| "itemType=" + Favorites.ITEM_TYPE_SHORTCUT + |
| " AND profileId=" + getDefaultUserSerial(), |
| null, null, null, null); |
| SQLiteStatement updateStmt = db.compileStatement("UPDATE favorites SET itemType=" |
| + Favorites.ITEM_TYPE_APPLICATION + " WHERE _id=?") |
| ) { |
| final int idIndex = c.getColumnIndexOrThrow(Favorites._ID); |
| final int intentIndex = c.getColumnIndexOrThrow(Favorites.INTENT); |
| |
| while (c.moveToNext()) { |
| String intentDescription = c.getString(intentIndex); |
| Intent intent; |
| try { |
| intent = Intent.parseUri(intentDescription, 0); |
| } catch (URISyntaxException e) { |
| Log.e(TAG, "Unable to parse intent", e); |
| continue; |
| } |
| |
| if (!PackageManagerHelper.isLauncherAppTarget(intent)) { |
| continue; |
| } |
| |
| int id = c.getInt(idIndex); |
| updateStmt.bindLong(1, id); |
| updateStmt.executeUpdateDelete(); |
| } |
| t.commit(); |
| } catch (SQLException ex) { |
| Log.w(TAG, "Error deduping shortcuts", ex); |
| } |
| } |
| |
| @Thunk boolean updateFolderItemsRank(SQLiteDatabase db, boolean addRankColumn) { |
| try (SQLiteTransaction t = new SQLiteTransaction(db)) { |
| if (addRankColumn) { |
| // Insert new column for holding rank |
| db.execSQL("ALTER TABLE favorites ADD COLUMN rank INTEGER NOT NULL DEFAULT 0;"); |
| } |
| |
| // Get a map for folder ID to folder width |
| Cursor c = db.rawQuery("SELECT container, MAX(cellX) FROM favorites" |
| + " WHERE container IN (SELECT _id FROM favorites WHERE itemType = ?)" |
| + " GROUP BY container;", |
| new String[] {Integer.toString(LauncherSettings.Favorites.ITEM_TYPE_FOLDER)}); |
| |
| while (c.moveToNext()) { |
| db.execSQL("UPDATE favorites SET rank=cellX+(cellY*?) WHERE " |
| + "container=? AND cellX IS NOT NULL AND cellY IS NOT NULL;", |
| new Object[] {c.getLong(1) + 1, c.getLong(0)}); |
| } |
| |
| c.close(); |
| t.commit(); |
| } catch (SQLException ex) { |
| // Old version remains, which means we wipe old data |
| Log.e(TAG, ex.getMessage(), ex); |
| return false; |
| } |
| return true; |
| } |
| |
| private boolean addIntegerColumn(SQLiteDatabase db, String columnName, long defaultValue) { |
| try (SQLiteTransaction t = new SQLiteTransaction(db)) { |
| db.execSQL("ALTER TABLE favorites ADD COLUMN " |
| + columnName + " INTEGER NOT NULL DEFAULT " + defaultValue + ";"); |
| t.commit(); |
| } catch (SQLException ex) { |
| Log.e(TAG, ex.getMessage(), ex); |
| return false; |
| } |
| return true; |
| } |
| |
| // Generates a new ID to use for an object in your database. This method should be only |
| // called from the main UI thread. As an exception, we do call it when we call the |
| // constructor from the worker thread; however, this doesn't extend until after the |
| // constructor is called, and we only pass a reference to LauncherProvider to LauncherApp |
| // after that point |
| @Override |
| public int generateNewItemId() { |
| if (mMaxItemId < 0) { |
| throw new RuntimeException("Error: max item id was not initialized"); |
| } |
| mMaxItemId += 1; |
| return mMaxItemId; |
| } |
| |
| public AppWidgetHost newLauncherWidgetHost() { |
| return new LauncherAppWidgetHost(mContext); |
| } |
| |
| @Override |
| public int insertAndCheck(SQLiteDatabase db, ContentValues values) { |
| return dbInsertAndCheck(this, db, Favorites.TABLE_NAME, null, values); |
| } |
| |
| public void checkId(ContentValues values) { |
| int id = values.getAsInteger(Favorites._ID); |
| mMaxItemId = Math.max(id, mMaxItemId); |
| } |
| |
| private int initializeMaxItemId(SQLiteDatabase db) { |
| return getMaxId(db, "SELECT MAX(%1$s) FROM %2$s", Favorites._ID, Favorites.TABLE_NAME); |
| } |
| |
| // Returns a new ID to use for an workspace screen in your database that is greater than all |
| // existing screen IDs. |
| private int getNewScreenId() { |
| return getMaxId(getWritableDatabase(), |
| "SELECT MAX(%1$s) FROM %2$s WHERE %3$s = %4$d AND %1$s >= 0", |
| Favorites.SCREEN, Favorites.TABLE_NAME, Favorites.CONTAINER, |
| Favorites.CONTAINER_DESKTOP) + 1; |
| } |
| |
| @Thunk int loadFavorites(SQLiteDatabase db, AutoInstallsLayout loader) { |
| // TODO: Use multiple loaders with fall-back and transaction. |
| int count = loader.loadLayout(db, new IntArray()); |
| |
| // Ensure that the max ids are initialized |
| mMaxItemId = initializeMaxItemId(db); |
| return count; |
| } |
| } |
| |
| /** |
| * @return the max _id in the provided table. |
| */ |
| @Thunk static int getMaxId(SQLiteDatabase db, String query, Object... args) { |
| int max = 0; |
| try (SQLiteStatement prog = db.compileStatement( |
| String.format(Locale.ENGLISH, query, args))) { |
| max = (int) DatabaseUtils.longForQuery(prog, null); |
| if (max < 0) { |
| throw new RuntimeException("Error: could not query max id"); |
| } |
| } catch (IllegalArgumentException exception) { |
| String message = exception.getMessage(); |
| if (message.contains("re-open") && message.contains("already-closed")) { |
| // Don't crash trying to end a transaction an an already closed DB. See b/173162852. |
| } else { |
| throw exception; |
| } |
| } |
| return max; |
| } |
| |
| static class SqlArguments { |
| public final String table; |
| public final String where; |
| public final String[] args; |
| |
| SqlArguments(Uri url, String where, String[] args) { |
| if (url.getPathSegments().size() == 1) { |
| this.table = url.getPathSegments().get(0); |
| this.where = where; |
| this.args = args; |
| } else if (url.getPathSegments().size() != 2) { |
| throw new IllegalArgumentException("Invalid URI: " + url); |
| } else if (!TextUtils.isEmpty(where)) { |
| throw new UnsupportedOperationException("WHERE clause not supported: " + url); |
| } else { |
| this.table = url.getPathSegments().get(0); |
| this.where = "_id=" + ContentUris.parseId(url); |
| this.args = null; |
| } |
| } |
| |
| SqlArguments(Uri url) { |
| if (url.getPathSegments().size() == 1) { |
| table = url.getPathSegments().get(0); |
| where = null; |
| args = null; |
| } else { |
| throw new IllegalArgumentException("Invalid URI: " + url); |
| } |
| } |
| } |
| } |
