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/*
* Copyright (C) 2016 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.provider;
import static com.android.launcher3.icons.IconCache.EXTRA_SHORTCUT_BADGE_OVERRIDE_PACKAGE;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.content.pm.ShortcutInfo;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.Icon;
import android.os.PersistableBundle;
import android.os.Process;
import android.os.UserManager;
import android.text.TextUtils;
import com.android.launcher3.LauncherAppState;
import com.android.launcher3.LauncherSettings.Favorites;
import com.android.launcher3.Utilities;
import com.android.launcher3.model.LoaderCursor;
import com.android.launcher3.model.UserManagerState;
import com.android.launcher3.pm.PinRequestHelper;
import com.android.launcher3.pm.UserCache;
import com.android.launcher3.shortcuts.ShortcutKey;
import com.android.launcher3.util.IntArray;
import com.android.launcher3.util.IntSet;
/**
* A set of utility methods for Launcher DB used for DB updates and migration.
*/
public class LauncherDbUtils {
/**
* Returns a string which can be used as a where clause for DB query to match the given itemId
*/
public static String itemIdMatch(int itemId) {
return "_id=" + itemId;
}
public static IntArray queryIntArray(boolean distinct, SQLiteDatabase db, String tableName,
String columnName, String selection, String groupBy, String orderBy) {
IntArray out = new IntArray();
try (Cursor c = db.query(distinct, tableName, new String[] { columnName }, selection, null,
groupBy, null, orderBy, null)) {
while (c.moveToNext()) {
out.add(c.getInt(0));
}
}
return out;
}
public static boolean tableExists(SQLiteDatabase db, String tableName) {
try (Cursor c = db.query(true, "sqlite_master", new String[] {"tbl_name"},
"tbl_name = ?", new String[] {tableName},
null, null, null, null, null)) {
return c.getCount() > 0;
}
}
public static void dropTable(SQLiteDatabase db, String tableName) {
db.execSQL("DROP TABLE IF EXISTS " + tableName);
}
/** Copy fromTable in fromDb to toTable in toDb. */
public static void copyTable(SQLiteDatabase fromDb, String fromTable, SQLiteDatabase toDb,
String toTable, Context context) {
long userSerial = UserCache.INSTANCE.get(context).getSerialNumberForUser(
Process.myUserHandle());
dropTable(toDb, toTable);
Favorites.addTableToDb(toDb, userSerial, false, toTable);
if (fromDb != toDb) {
toDb.execSQL("ATTACH DATABASE '" + fromDb.getPath() + "' AS from_db");
toDb.execSQL(
"INSERT INTO " + toTable + " SELECT * FROM from_db." + fromTable);
toDb.execSQL("DETACH DATABASE 'from_db'");
} else {
toDb.execSQL("INSERT INTO " + toTable + " SELECT * FROM " + fromTable);
}
}
/**
* Migrates the legacy shortcuts to deep shortcuts pinned under Launcher.
* Removes any invalid shortcut or any shortcut which requires some permission to launch
*/
public static void migrateLegacyShortcuts(Context context, SQLiteDatabase db) {
Cursor c = db.query(
Favorites.TABLE_NAME, null, "itemType = 1", null, null, null, null);
UserManagerState ums = new UserManagerState();
ums.init(UserCache.INSTANCE.get(context),
context.getSystemService(UserManager.class));
LoaderCursor lc = new LoaderCursor(c, LauncherAppState.getInstance(context), ums);
IntSet deletedShortcuts = new IntSet();
while (lc.moveToNext()) {
if (lc.user != Process.myUserHandle()) {
deletedShortcuts.add(lc.id);
continue;
}
Intent intent = lc.parseIntent();
if (intent == null) {
deletedShortcuts.add(lc.id);
continue;
}
if (TextUtils.isEmpty(lc.getTitle())) {
deletedShortcuts.add(lc.id);
continue;
}
// Make sure the target intent can be launched without any permissions. Otherwise remove
// the shortcut
ResolveInfo ri = context.getPackageManager().resolveActivity(intent, 0);
if (ri == null || !TextUtils.isEmpty(ri.activityInfo.permission)) {
deletedShortcuts.add(lc.id);
continue;
}
PersistableBundle extras = new PersistableBundle();
extras.putString(EXTRA_SHORTCUT_BADGE_OVERRIDE_PACKAGE, ri.activityInfo.packageName);
ShortcutInfo.Builder infoBuilder = new ShortcutInfo.Builder(
context, "migrated_shortcut-" + lc.id)
.setIntent(intent)
.setExtras(extras)
.setShortLabel(lc.getTitle());
Bitmap bitmap = null;
byte[] iconData = lc.getIconBlob();
if (iconData != null) {
bitmap = BitmapFactory.decodeByteArray(iconData, 0, iconData.length);
}
if (bitmap != null) {
infoBuilder.setIcon(Icon.createWithBitmap(bitmap));
}
ShortcutInfo info = infoBuilder.build();
if (!PinRequestHelper.createRequestForShortcut(context, info).accept()) {
deletedShortcuts.add(lc.id);
continue;
}
ContentValues update = new ContentValues();
update.put(Favorites.ITEM_TYPE, Favorites.ITEM_TYPE_DEEP_SHORTCUT);
update.put(Favorites.INTENT,
ShortcutKey.makeIntent(info.getId(), context.getPackageName()).toUri(0));
db.update(Favorites.TABLE_NAME, update, "_id = ?",
new String[] {Integer.toString(lc.id)});
}
lc.close();
if (!deletedShortcuts.isEmpty()) {
db.delete(Favorites.TABLE_NAME,
Utilities.createDbSelectionQuery(Favorites._ID, deletedShortcuts.getArray()),
null);
}
// Drop the unused columns
db.execSQL("ALTER TABLE " + Favorites.TABLE_NAME + " DROP COLUMN iconPackage;");
db.execSQL("ALTER TABLE " + Favorites.TABLE_NAME + " DROP COLUMN iconResource;");
}
/**
* Utility class to simplify managing sqlite transactions
*/
public static class SQLiteTransaction implements AutoCloseable {
private final SQLiteDatabase mDb;
public SQLiteTransaction(SQLiteDatabase db) {
mDb = db;
db.beginTransaction();
}
public void commit() {
mDb.setTransactionSuccessful();
}
@Override
public void close() {
mDb.endTransaction();
}
public SQLiteDatabase getDb() {
return mDb;
}
}
}
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