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-rw-r--r--src/com/android/launcher3/InvariantDeviceProfile.java2
-rw-r--r--src/com/android/launcher3/LauncherBackupAgentHelper.java5
-rw-r--r--src/com/android/launcher3/LauncherBackupHelper.java9
-rw-r--r--src/com/android/launcher3/LauncherModel.java23
-rw-r--r--src/com/android/launcher3/LauncherProvider.java58
-rw-r--r--src/com/android/launcher3/LauncherSettings.java2
-rw-r--r--src/com/android/launcher3/model/GridSizeMigrationTask.java480
-rw-r--r--tests/src/com/android/launcher3/model/GridSizeMigrationTaskTest.java321
-rw-r--r--tests/src/com/android/launcher3/util/TestLauncherProvider.java40
9 files changed, 701 insertions, 239 deletions
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index dce1ab887..d60132270 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -83,7 +83,7 @@ public class InvariantDeviceProfile {
DeviceProfile landscapeProfile;
DeviceProfile portraitProfile;
- InvariantDeviceProfile() {
+ public InvariantDeviceProfile() {
}
public InvariantDeviceProfile(InvariantDeviceProfile p) {
diff --git a/src/com/android/launcher3/LauncherBackupAgentHelper.java b/src/com/android/launcher3/LauncherBackupAgentHelper.java
index bf9c66822..b192ba3cc 100644
--- a/src/com/android/launcher3/LauncherBackupAgentHelper.java
+++ b/src/com/android/launcher3/LauncherBackupAgentHelper.java
@@ -101,12 +101,9 @@ public class LauncherBackupAgentHelper extends BackupAgentHelper {
LauncherSettings.Settings.METHOD_UPDATE_FOLDER_ITEMS_RANK);
}
- // TODO: Update this logic to handle grid difference of 2. as well as hotseat difference
if (GridSizeMigrationTask.ENABLED && mHelper.shouldAttemptWorkspaceMigration()) {
GridSizeMigrationTask.markForMigration(getApplicationContext(),
- (int) mHelper.migrationCompatibleProfileData.desktopCols,
- (int) mHelper.migrationCompatibleProfileData.desktopRows,
- mHelper.widgetSizes);
+ mHelper.widgetSizes, mHelper.migrationCompatibleProfileData);
}
LauncherSettings.Settings.call(getContentResolver(),
diff --git a/src/com/android/launcher3/LauncherBackupHelper.java b/src/com/android/launcher3/LauncherBackupHelper.java
index 5f58e284a..05d729e78 100644
--- a/src/com/android/launcher3/LauncherBackupHelper.java
+++ b/src/com/android/launcher3/LauncherBackupHelper.java
@@ -315,14 +315,13 @@ public class LauncherBackupHelper implements BackupHelper {
return true;
}
- if (GridSizeMigrationTask.ENABLED &&
- (oldProfile.desktopCols - currentProfile.desktopCols <= 1) &&
- (oldProfile.desktopRows - currentProfile.desktopRows <= 1)) {
- // Allow desktop migration when row and/or column count contracts by 1.
-
+ if (GridSizeMigrationTask.ENABLED) {
+ // One time migrate the workspace when launcher starts.
migrationCompatibleProfileData = initDeviceProfileData(mIdp);
migrationCompatibleProfileData.desktopCols = oldProfile.desktopCols;
migrationCompatibleProfileData.desktopRows = oldProfile.desktopRows;
+ migrationCompatibleProfileData.hotseatCount = oldProfile.hotseatCount;
+ migrationCompatibleProfileData.allappsRank = oldProfile.allappsRank;
return true;
}
return false;
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index 0eb1a90b0..92ef3eae7 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -1651,25 +1651,10 @@ public class LauncherModel extends BroadcastReceiver
int countX = profile.numColumns;
int countY = profile.numRows;
- if (GridSizeMigrationTask.ENABLED && GridSizeMigrationTask.shouldRunTask(mContext)) {
- long migrationStartTime = System.currentTimeMillis();
- Log.v(TAG, "Starting workspace migration after restore");
- try {
- GridSizeMigrationTask task = new GridSizeMigrationTask(mContext);
- // Clear the flags before starting the task, so that we do not run the task
- // again, in case there was an uncaught error.
- GridSizeMigrationTask.clearFlags(mContext);
- task.execute();
- } catch (Exception e) {
- Log.e(TAG, "Error during grid migration", e);
-
- // Clear workspace.
- mFlags = mFlags | LOADER_FLAG_CLEAR_WORKSPACE;
- }
- Log.v(TAG, "Workspace migration completed in "
- + (System.currentTimeMillis() - migrationStartTime));
-
- GridSizeMigrationTask.saveCurrentConfig(mContext);
+ if (GridSizeMigrationTask.ENABLED &&
+ !GridSizeMigrationTask.migrateGridIfNeeded(mContext)) {
+ // Migration failed. Clear workspace.
+ mFlags = mFlags | LOADER_FLAG_CLEAR_WORKSPACE;
}
if ((mFlags & LOADER_FLAG_CLEAR_WORKSPACE) != 0) {
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index 3fc0b948c..ac9b32168 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -77,7 +77,7 @@ public class LauncherProvider extends ContentProvider {
private static final Object LISTENER_LOCK = new Object();
@Thunk LauncherProviderChangeListener mListener;
- @Thunk DatabaseHelper mOpenHelper;
+ protected DatabaseHelper mOpenHelper;
@Override
public boolean onCreate() {
@@ -104,7 +104,10 @@ public class LauncherProvider extends ContentProvider {
}
}
- private synchronized void createDbIfNotExists() {
+ /**
+ * Overridden in tests
+ */
+ protected synchronized void createDbIfNotExists() {
if (mOpenHelper == null) {
mOpenHelper = new DatabaseHelper(getContext(), this);
}
@@ -364,7 +367,10 @@ public class LauncherProvider extends ContentProvider {
return folderIds;
}
- private void notifyListeners() {
+ /**
+ * Overridden in tests
+ */
+ protected void notifyListeners() {
// always notify the backup agent
LauncherBackupAgentHelper.dataChanged(getContext());
synchronized (LISTENER_LOCK) {
@@ -501,7 +507,10 @@ public class LauncherProvider extends ContentProvider {
});
}
- private static class DatabaseHelper extends SQLiteOpenHelper implements LayoutParserCallback {
+ /**
+ * The class is subclassed in tests to create an in-memory db.
+ */
+ protected static class DatabaseHelper extends SQLiteOpenHelper implements LayoutParserCallback {
private final LauncherProvider mProvider;
private final Context mContext;
@Thunk final AppWidgetHost mAppWidgetHost;
@@ -535,6 +544,19 @@ public class LauncherProvider extends ContentProvider {
}
}
+ /**
+ * Constructor used only in tests.
+ */
+ public DatabaseHelper(Context context, LauncherProvider provider, String tableName) {
+ super(context, tableName, null, DATABASE_VERSION);
+ mContext = context;
+ mProvider = provider;
+
+ mAppWidgetHost = null;
+ mMaxItemId = initializeMaxItemId(getWritableDatabase());
+ mMaxScreenId = initializeMaxScreenId(getWritableDatabase());
+ }
+
private boolean tableExists(String tableName) {
Cursor c = getReadableDatabase().query(
true, "sqlite_master", new String[] {"tbl_name"},
@@ -565,18 +587,28 @@ public class LauncherProvider extends ContentProvider {
// Fresh and clean launcher DB.
mMaxItemId = initializeMaxItemId(db);
- setFlagEmptyDbCreated();
+ onEmptyDbCreated();
+ }
+
+ /**
+ * Overriden in tests.
+ */
+ protected void onEmptyDbCreated() {
+ // Set the flag for empty DB
+ Utilities.getPrefs(mContext).edit().putBoolean(EMPTY_DATABASE_CREATED, true).commit();
// When a new DB is created, remove all previously stored managed profile information.
- ManagedProfileHeuristic.processAllUsers(Collections.<UserHandleCompat>emptyList(), mContext);
+ ManagedProfileHeuristic.processAllUsers(Collections.<UserHandleCompat>emptyList(),
+ mContext);
}
- private void addFavoritesTable(SQLiteDatabase db, boolean optional) {
- UserManagerCompat userManager = UserManagerCompat.getInstance(mContext);
- long userSerialNumber = userManager.getSerialNumberForUser(
+ protected long getDefaultUserSerial() {
+ return UserManagerCompat.getInstance(mContext).getSerialNumberForUser(
UserHandleCompat.myUserHandle());
- String ifNotExists = optional ? " IF NOT EXISTS " : "";
+ }
+ private void addFavoritesTable(SQLiteDatabase db, boolean optional) {
+ String ifNotExists = optional ? " IF NOT EXISTS " : "";
db.execSQL("CREATE TABLE " + ifNotExists + TABLE_FAVORITES + " (" +
"_id INTEGER PRIMARY KEY," +
"title TEXT," +
@@ -599,7 +631,7 @@ public class LauncherProvider extends ContentProvider {
"appWidgetProvider TEXT," +
"modified INTEGER NOT NULL DEFAULT 0," +
"restored INTEGER NOT NULL DEFAULT 0," +
- "profileId INTEGER DEFAULT " + userSerialNumber + "," +
+ "profileId INTEGER DEFAULT " + getDefaultUserSerial() + "," +
"rank INTEGER NOT NULL DEFAULT 0," +
"options INTEGER NOT NULL DEFAULT 0" +
");");
@@ -649,10 +681,6 @@ public class LauncherProvider extends ContentProvider {
Utilities.getPrefs(mContext).edit().putBoolean(EMPTY_DATABASE_CREATED, false).commit();
}
- private void setFlagEmptyDbCreated() {
- Utilities.getPrefs(mContext).edit().putBoolean(EMPTY_DATABASE_CREATED, true).commit();
- }
-
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (LOGD) Log.d(TAG, "onUpgrade triggered: " + oldVersion);
diff --git a/src/com/android/launcher3/LauncherSettings.java b/src/com/android/launcher3/LauncherSettings.java
index 9ee6a2199..55a53785f 100644
--- a/src/com/android/launcher3/LauncherSettings.java
+++ b/src/com/android/launcher3/LauncherSettings.java
@@ -115,7 +115,7 @@ public class LauncherSettings {
/**
* The content:// style URL for this table
*/
- static final Uri CONTENT_URI = Uri.parse("content://" +
+ public static final Uri CONTENT_URI = Uri.parse("content://" +
ProviderConfig.AUTHORITY + "/" + TABLE_NAME);
/**
diff --git a/src/com/android/launcher3/model/GridSizeMigrationTask.java b/src/com/android/launcher3/model/GridSizeMigrationTask.java
index 08c3dc0bb..19ec3ed64 100644
--- a/src/com/android/launcher3/model/GridSizeMigrationTask.java
+++ b/src/com/android/launcher3/model/GridSizeMigrationTask.java
@@ -9,6 +9,7 @@ import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.database.Cursor;
import android.graphics.Point;
+import android.net.Uri;
import android.text.TextUtils;
import android.util.Log;
@@ -21,6 +22,7 @@ import com.android.launcher3.LauncherProvider;
import com.android.launcher3.LauncherSettings;
import com.android.launcher3.LauncherSettings.Favorites;
import com.android.launcher3.Utilities;
+import com.android.launcher3.backup.nano.BackupProtos;
import com.android.launcher3.compat.PackageInstallerCompat;
import com.android.launcher3.compat.UserHandleCompat;
import com.android.launcher3.util.LongArrayMap;
@@ -58,15 +60,14 @@ public class GridSizeMigrationTask {
private static final float WT_FOLDER_FACTOR = 0.5f;
private final Context mContext;
- private final ContentValues mTempValues = new ContentValues();
- private final HashMap<String, Point> mWidgetMinSize;
private final InvariantDeviceProfile mIdp;
- private HashSet<String> mValidPackages;
- public ArrayList<Long> mEntryToRemove;
- private ArrayList<ContentProviderOperation> mUpdateOperations;
-
- private ArrayList<DbEntry> mCarryOver;
+ private final HashMap<String, Point> mWidgetMinSize = new HashMap<>();
+ private final ContentValues mTempValues = new ContentValues();
+ private final ArrayList<Long> mEntryToRemove = new ArrayList<>();
+ private final ArrayList<ContentProviderOperation> mUpdateOperations = new ArrayList<>();
+ private final ArrayList<DbEntry> mCarryOver = new ArrayList<>();
+ private final HashSet<String> mValidPackages;
private final int mSrcX, mSrcY;
private final int mTrgX, mTrgY;
@@ -74,73 +75,54 @@ public class GridSizeMigrationTask {
private final int mSrcHotseatSize;
private final int mSrcAllAppsRank;
+ private final int mDestHotseatSize;
+ private final int mDestAllAppsRank;
- /**
- * TODO: Create a generic constructor which can be unit tested.
- */
- public GridSizeMigrationTask(Context context) {
+ protected GridSizeMigrationTask(Context context, InvariantDeviceProfile idp,
+ HashSet<String> validPackages, HashMap<String, Point> widgetMinSize,
+ Point sourceSize, Point targetSize) {
mContext = context;
+ mValidPackages = validPackages;
+ mWidgetMinSize.putAll(widgetMinSize);
+ mIdp = idp;
-
- mIdp = LauncherAppState.getInstance().getInvariantDeviceProfile();
- mTrgX = mIdp.numColumns;
- mTrgY = mIdp.numRows;
-
- SharedPreferences prefs = Utilities.getPrefs(context);
- Point sourceSize = parsePoint(
- prefs.getString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, getPointString(mTrgX, mTrgY)));
mSrcX = sourceSize.x;
mSrcY = sourceSize.y;
- // Hotseat
- Point hotseatSize = parsePoint(
- prefs.getString(KEY_MIGRATION_SRC_HOTSEAT_SIZE,
- getPointString(mIdp.numHotseatIcons, mIdp.hotseatAllAppsRank)));
- mSrcHotseatSize = hotseatSize.x;
- mSrcAllAppsRank = hotseatSize.y;
-
- // Widget sizes
- mWidgetMinSize = new HashMap<String, Point>();
- for (String s : prefs.getStringSet(KEY_MIGRATION_WIDGET_MINSIZE,
- Collections.<String>emptySet())) {
- String[] parts = s.split("#");
- mWidgetMinSize.put(parts[0], parsePoint(parts[1]));
- }
+ mTrgX = targetSize.x;
+ mTrgY = targetSize.y;
mShouldRemoveX = mTrgX < mSrcX;
mShouldRemoveY = mTrgY < mSrcY;
+
+ // Non-used variables
+ mSrcHotseatSize = mSrcAllAppsRank = mDestHotseatSize = mDestAllAppsRank = -1;
}
- public void execute() throws Exception {
- mEntryToRemove = new ArrayList<>();
- mUpdateOperations = new ArrayList<>();
+ protected GridSizeMigrationTask(Context context,
+ InvariantDeviceProfile idp, HashSet<String> validPackages,
+ int srcHotseatSize, int srcAllAppsRank,
+ int destHotseatSize, int destAllAppsRank) {
+ mContext = context;
+ mIdp = idp;
+ mValidPackages = validPackages;
- // Initialize list of valid packages. This contain all the packages which are already on
- // the device and packages which are being installed. Any item which doesn't belong to
- // this set is removed.
- // Since the loader removes such items anyway, removing these items here doesn't cause any
- // extra data loss and gives us more free space on the grid for better migration.
- mValidPackages = new HashSet<>();
- for (PackageInfo info : mContext.getPackageManager().getInstalledPackages(0)) {
- mValidPackages.add(info.packageName);
- }
- mValidPackages.addAll(PackageInstallerCompat.getInstance(mContext)
- .updateAndGetActiveSessionCache().keySet());
+ mSrcHotseatSize = srcHotseatSize;
+ mSrcAllAppsRank = srcAllAppsRank;
- // Migrate hotseat
- if (mSrcHotseatSize != mIdp.numHotseatIcons || mSrcAllAppsRank != mIdp.hotseatAllAppsRank) {
- migrateHotseat();
- }
+ mDestHotseatSize = destHotseatSize;
+ mDestAllAppsRank = destAllAppsRank;
- if (mShouldRemoveX || mShouldRemoveY) {
- if ((mSrcY - mTrgX) > 1 || (mSrcY - mSrcY) > 1) {
- // TODO: support this.
- throw new Exception("The universe is too large for migration");
- } else {
- migrateWorkspace();
- }
- }
+ // Non-used variables
+ mSrcX = mSrcY = mTrgX = mTrgY = -1;
+ mShouldRemoveX = mShouldRemoveY = false;
+ }
+ /**
+ * Applied all the pending DB operations
+ * @return true if any DB operation was commited.
+ */
+ private boolean applyOperations() throws Exception {
// Update items
if (!mUpdateOperations.isEmpty()) {
mContext.getContentResolver().applyBatch(LauncherProvider.AUTHORITY, mUpdateOperations);
@@ -155,16 +137,7 @@ public class GridSizeMigrationTask {
LauncherSettings.Favorites._ID, mEntryToRemove), null);
}
- if (!mUpdateOperations.isEmpty() || !mEntryToRemove.isEmpty()) {
- // Make sure we haven't removed everything.
- final Cursor c = mContext.getContentResolver().query(
- LauncherSettings.Favorites.CONTENT_URI, null, null, null, null);
- boolean hasData = c.moveToNext();
- c.close();
- if (!hasData) {
- throw new Exception("Removed every thing during grid resize");
- }
- }
+ return !mUpdateOperations.isEmpty() || !mEntryToRemove.isEmpty();
}
/**
@@ -173,11 +146,12 @@ public class GridSizeMigrationTask {
* entries is more than what can fit in the new hotseat, we drop the entries with least weight.
* For weight calculation {@see #WT_SHORTCUT}, {@see #WT_APPLICATION}
* & {@see #WT_FOLDER_FACTOR}.
+ * @return true if any DB change was made
*/
- private void migrateHotseat() {
+ protected boolean migrateHotseat() throws Exception {
ArrayList<DbEntry> items = loadHotseatEntries();
- int requiredCount = mIdp.numHotseatIcons - 1;
+ int requiredCount = mDestHotseatSize - 1;
while (items.size() > requiredCount) {
// Pick the center item by default.
@@ -209,15 +183,18 @@ public class GridSizeMigrationTask {
}
newScreenId++;
- if (newScreenId == mIdp.hotseatAllAppsRank) {
+ if (newScreenId == mDestAllAppsRank) {
newScreenId++;
}
}
- }
- private void migrateWorkspace() throws Exception {
- mCarryOver = new ArrayList<>();
+ return applyOperations();
+ }
+ /**
+ * @return true if any DB change was made
+ */
+ protected boolean migrateWorkspace() throws Exception {
ArrayList<Long> allScreens = LauncherModel.loadWorkspaceScreensDb(mContext);
if (allScreens.isEmpty()) {
throw new Exception("Unable to get workspace screens");
@@ -250,6 +227,7 @@ public class GridSizeMigrationTask {
mContext.getContentResolver(),
LauncherSettings.Settings.METHOD_NEW_SCREEN_ID)
.getLong(LauncherSettings.Settings.EXTRA_VALUE);
+
allScreens.add(newScreenId);
for (DbEntry item : placement.finalPlacedItems) {
if (!mCarryOver.remove(itemMap.get(item.id))) {
@@ -264,10 +242,19 @@ public class GridSizeMigrationTask {
} while (!mCarryOver.isEmpty());
-
- LauncherAppState.getInstance().getModel()
- .updateWorkspaceScreenOrder(mContext, allScreens);
+ // Update screens
+ final Uri uri = LauncherSettings.WorkspaceScreens.CONTENT_URI;
+ mUpdateOperations.add(ContentProviderOperation.newDelete(uri).build());
+ int count = allScreens.size();
+ for (int i = 0; i < count; i++) {
+ ContentValues v = new ContentValues();
+ long screenId = allScreens.get(i);
+ v.put(LauncherSettings.WorkspaceScreens._ID, screenId);
+ v.put(LauncherSettings.WorkspaceScreens.SCREEN_RANK, i);
+ mUpdateOperations.add(ContentProviderOperation.newInsert(uri).withValues(v).build());
+ }
}
+ return applyOperations();
}
/**
@@ -700,96 +687,96 @@ public class GridSizeMigrationTask {
* Loads entries for a particular screen id.
*/
private ArrayList<DbEntry> loadWorkspaceEntries(long screen) {
- Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
- new String[] {
- Favorites._ID, // 0
- Favorites.ITEM_TYPE, // 1
- Favorites.CELLX, // 2
- Favorites.CELLY, // 3
- Favorites.SPANX, // 4
- Favorites.SPANY, // 5
- Favorites.INTENT, // 6
- Favorites.APPWIDGET_PROVIDER}, // 7
+ Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
+ new String[]{
+ Favorites._ID, // 0
+ Favorites.ITEM_TYPE, // 1
+ Favorites.CELLX, // 2
+ Favorites.CELLY, // 3
+ Favorites.SPANX, // 4
+ Favorites.SPANY, // 5
+ Favorites.INTENT, // 6
+ Favorites.APPWIDGET_PROVIDER}, // 7
Favorites.CONTAINER + " = " + Favorites.CONTAINER_DESKTOP
- + " AND " + Favorites.SCREEN + " = " + screen, null, null, null);
-
- final int indexId = c.getColumnIndexOrThrow(Favorites._ID);
- final int indexItemType = c.getColumnIndexOrThrow(Favorites.ITEM_TYPE);
- final int indexCellX = c.getColumnIndexOrThrow(Favorites.CELLX);
- final int indexCellY = c.getColumnIndexOrThrow(Favorites.CELLY);
- final int indexSpanX = c.getColumnIndexOrThrow(Favorites.SPANX);
- final int indexSpanY = c.getColumnIndexOrThrow(Favorites.SPANY);
- final int indexIntent = c.getColumnIndexOrThrow(Favorites.INTENT);
- final int indexAppWidgetProvider = c.getColumnIndexOrThrow(Favorites.APPWIDGET_PROVIDER);
-
- ArrayList<DbEntry> entries = new ArrayList<>();
- while (c.moveToNext()) {
- DbEntry entry = new DbEntry();
- entry.id = c.getLong(indexId);
- entry.itemType = c.getInt(indexItemType);
- entry.cellX = c.getInt(indexCellX);
- entry.cellY = c.getInt(indexCellY);
- entry.spanX = c.getInt(indexSpanX);
- entry.spanY = c.getInt(indexSpanY);
- entry.screenId = screen;
-
- try {
- // calculate weight
- switch (entry.itemType) {
- case Favorites.ITEM_TYPE_SHORTCUT:
- case Favorites.ITEM_TYPE_APPLICATION: {
- verifyIntent(c.getString(indexIntent));
- entry.weight = entry.itemType == Favorites.ITEM_TYPE_SHORTCUT
- ? WT_SHORTCUT : WT_APPLICATION;
- break;
- }
- case Favorites.ITEM_TYPE_APPWIDGET: {
- String provider = c.getString(indexAppWidgetProvider);
- ComponentName cn = ComponentName.unflattenFromString(provider);
- verifyPackage(cn.getPackageName());
- entry.weight = Math.max(WT_WIDGET_MIN, WT_WIDGET_FACTOR
- * entry.spanX * entry.spanY);
-
- // Migration happens for current user only.
- LauncherAppWidgetProviderInfo pInfo = LauncherModel.getProviderInfo(
- mContext, cn, UserHandleCompat.myUserHandle());
- Point spans = pInfo == null ?
- mWidgetMinSize.get(provider) : pInfo.getMinSpans(mIdp, mContext);
- if (spans != null) {
- entry.minSpanX = spans.x > 0 ? spans.x : entry.spanX;
- entry.minSpanY = spans.y > 0 ? spans.y : entry.spanY;
- } else {
- // Assume that the widget be resized down to 2x2
- entry.minSpanX = entry.minSpanY = 2;
- }
-
- if (entry.minSpanX > mTrgX || entry.minSpanY > mTrgY) {
- throw new Exception("Widget can't be resized down to fit the grid");
- }
- break;
- }
- case Favorites.ITEM_TYPE_FOLDER: {
- int total = getFolderItemsCount(entry.id);
- if (total == 0) {
- throw new Exception("Folder is empty");
- }
- entry.weight = WT_FOLDER_FACTOR * total;
- break;
- }
- default:
- throw new Exception("Invalid item type");
- }
- } catch (Exception e) {
- if (DEBUG) {
- Log.d(TAG, "Removing item " + entry.id, e);
- }
- mEntryToRemove.add(entry.id);
- continue;
- }
- entries.add(entry);
- }
- c.close();
- return entries;
+ + " AND " + Favorites.SCREEN + " = " + screen, null, null, null);
+
+ final int indexId = c.getColumnIndexOrThrow(Favorites._ID);
+ final int indexItemType = c.getColumnIndexOrThrow(Favorites.ITEM_TYPE);
+ final int indexCellX = c.getColumnIndexOrThrow(Favorites.CELLX);
+ final int indexCellY = c.getColumnIndexOrThrow(Favorites.CELLY);
+ final int indexSpanX = c.getColumnIndexOrThrow(Favorites.SPANX);
+ final int indexSpanY = c.getColumnIndexOrThrow(Favorites.SPANY);
+ final int indexIntent = c.getColumnIndexOrThrow(Favorites.INTENT);
+ final int indexAppWidgetProvider = c.getColumnIndexOrThrow(Favorites.APPWIDGET_PROVIDER);
+
+ ArrayList<DbEntry> entries = new ArrayList<>();
+ while (c.moveToNext()) {
+ DbEntry entry = new DbEntry();
+ entry.id = c.getLong(indexId);
+ entry.itemType = c.getInt(indexItemType);
+ entry.cellX = c.getInt(indexCellX);
+ entry.cellY = c.getInt(indexCellY);
+ entry.spanX = c.getInt(indexSpanX);
+ entry.spanY = c.getInt(indexSpanY);
+ entry.screenId = screen;
+
+ try {
+ // calculate weight
+ switch (entry.itemType) {
+ case Favorites.ITEM_TYPE_SHORTCUT:
+ case Favorites.ITEM_TYPE_APPLICATION: {
+ verifyIntent(c.getString(indexIntent));
+ entry.weight = entry.itemType == Favorites.ITEM_TYPE_SHORTCUT
+ ? WT_SHORTCUT : WT_APPLICATION;
+ break;
+ }
+ case Favorites.ITEM_TYPE_APPWIDGET: {
+ String provider = c.getString(indexAppWidgetProvider);
+ ComponentName cn = ComponentName.unflattenFromString(provider);
+ verifyPackage(cn.getPackageName());
+ entry.weight = Math.max(WT_WIDGET_MIN, WT_WIDGET_FACTOR
+ * entry.spanX * entry.spanY);
+
+ // Migration happens for current user only.
+ LauncherAppWidgetProviderInfo pInfo = LauncherModel.getProviderInfo(
+ mContext, cn, UserHandleCompat.myUserHandle());
+ Point spans = pInfo == null ?
+ mWidgetMinSize.get(provider) : pInfo.getMinSpans(mIdp, mContext);
+ if (spans != null) {
+ entry.minSpanX = spans.x > 0 ? spans.x : entry.spanX;
+ entry.minSpanY = spans.y > 0 ? spans.y : entry.spanY;
+ } else {
+ // Assume that the widget be resized down to 2x2
+ entry.minSpanX = entry.minSpanY = 2;
+ }
+
+ if (entry.minSpanX > mTrgX || entry.minSpanY > mTrgY) {
+ throw new Exception("Widget can't be resized down to fit the grid");
+ }
+ break;
+ }
+ case Favorites.ITEM_TYPE_FOLDER: {
+ int total = getFolderItemsCount(entry.id);
+ if (total == 0) {
+ throw new Exception("Folder is empty");
+ }
+ entry.weight = WT_FOLDER_FACTOR * total;
+ break;
+ }
+ default:
+ throw new Exception("Invalid item type");
+ }
+ } catch (Exception e) {
+ if (DEBUG) {
+ Log.d(TAG, "Removing item " + entry.id, e);
+ }
+ mEntryToRemove.add(entry.id);
+ continue;
+ }
+ entries.add(entry);
+ }
+ c.close();
+ return entries;
}
/**
@@ -797,7 +784,7 @@ public class GridSizeMigrationTask {
*/
private int getFolderItemsCount(long folderId) {
Cursor c = mContext.getContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
- new String[] {Favorites._ID, Favorites.INTENT},
+ new String[]{Favorites._ID, Favorites.INTENT},
Favorites.CONTAINER + " = " + folderId, null, null, null);
int total = 0;
@@ -897,42 +884,147 @@ public class GridSizeMigrationTask {
return new Point(Integer.parseInt(split[0]), Integer.parseInt(split[1]));
}
- public static void markForMigration(Context context, int srcX, int srcY,
- HashSet<String> widgets) {
+ private static String getPointString(int x, int y) {
+ return String.format(Locale.ENGLISH, "%d,%d", x, y);
+ }
+
+ public static void markForMigration(
+ Context context, HashSet<String> widgets, BackupProtos.DeviceProfieData srcProfile) {
Utilities.getPrefs(context).edit()
- .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, getPointString(srcX, srcY))
+ .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE,
+ getPointString((int) srcProfile.desktopCols, (int) srcProfile.desktopRows))
+ .putString(KEY_MIGRATION_SRC_HOTSEAT_SIZE,
+ getPointString((int) srcProfile.hotseatCount, srcProfile.allappsRank))
.putStringSet(KEY_MIGRATION_WIDGET_MINSIZE, widgets)
.apply();
}
- public static boolean shouldRunTask(Context context) {
+ /**
+ * Migrates the workspace and hotseat in case their sizes changed.
+ * @return false if the migration failed.
+ */
+ public static boolean migrateGridIfNeeded(Context context) {
SharedPreferences prefs = Utilities.getPrefs(context);
InvariantDeviceProfile idp = LauncherAppState.getInstance().getInvariantDeviceProfile();
- // Run task if workspace or hotseat size has changed.
- return !getPointString(idp.numColumns, idp.numRows).equals(
- prefs.getString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, ""))
- || !getPointString(idp.numHotseatIcons, idp.hotseatAllAppsRank).equals(
- prefs.getString(KEY_MIGRATION_SRC_HOTSEAT_SIZE, ""));
- }
+ String gridSizeString = getPointString(idp.numColumns, idp.numRows);
+ String hotseatSizeString = getPointString(idp.numHotseatIcons, idp.hotseatAllAppsRank);
- public static void clearFlags(Context context) {
- Utilities.getPrefs(context).edit().remove(KEY_MIGRATION_WIDGET_MINSIZE).commit();
- }
+ if (gridSizeString.equals(prefs.getString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, "")) &&
+ hotseatSizeString.equals(prefs.getString(KEY_MIGRATION_SRC_HOTSEAT_SIZE, ""))) {
+ // Skip if workspace and hotseat sizes have not changed.
+ return true;
+ }
- public static void saveCurrentConfig(Context context) {
- InvariantDeviceProfile idp = LauncherAppState.getInstance().getInvariantDeviceProfile();
- Utilities.getPrefs(context).edit()
- .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE,
- getPointString(idp.numColumns, idp.numRows))
- .putString(KEY_MIGRATION_SRC_HOTSEAT_SIZE,
- getPointString(idp.numHotseatIcons, idp.hotseatAllAppsRank))
- .remove(KEY_MIGRATION_WIDGET_MINSIZE)
- .commit();
- }
+ long migrationStartTime = System.currentTimeMillis();
+ try {
+ boolean dbChanged = false;
+
+ // Initialize list of valid packages. This contain all the packages which are already on
+ // the device and packages which are being installed. Any item which doesn't belong to
+ // this set is removed.
+ // Since the loader removes such items anyway, removing these items here doesn't cause
+ // any extra data loss and gives us more free space on the grid for better migration.
+ HashSet validPackages = new HashSet<>();
+ for (PackageInfo info : context.getPackageManager().getInstalledPackages(0)) {
+ validPackages.add(info.packageName);
+ }
+ validPackages.addAll(PackageInstallerCompat.getInstance(context)
+ .updateAndGetActiveSessionCache().keySet());
+
+ // Hotseat
+ Point srcHotseatSize = parsePoint(prefs.getString(
+ KEY_MIGRATION_SRC_HOTSEAT_SIZE, hotseatSizeString));
+ if (srcHotseatSize.x != idp.numHotseatIcons ||
+ srcHotseatSize.y != idp.hotseatAllAppsRank) {
+ // Migrate hotseat.
+
+ dbChanged = new GridSizeMigrationTask(context,
+ LauncherAppState.getInstance().getInvariantDeviceProfile(),
+ validPackages,
+ srcHotseatSize.x, srcHotseatSize.y,
+ idp.numHotseatIcons, idp.hotseatAllAppsRank).migrateHotseat();
+ }
- private static String getPointString(int x, int y) {
- return String.format(Locale.ENGLISH, "%d,%d", x, y);
- }
+ // Grid size
+ Point targetSize = new Point(idp.numColumns, idp.numRows);
+ Point sourceSize = parsePoint(prefs.getString(
+ KEY_MIGRATION_SRC_WORKSPACE_SIZE, gridSizeString));
+
+ if (!targetSize.equals(sourceSize)) {
+
+ // The following list defines all possible grid sizes (and intermediate steps
+ // during migration). Note that at each step, dx <= 1 && dy <= 1. Any grid size
+ // which is not in this list is not migrated.
+ ArrayList<Point> gridSizeSteps = new ArrayList<>();
+ gridSizeSteps.add(new Point(2, 3));
+ gridSizeSteps.add(new Point(3, 3));
+ gridSizeSteps.add(new Point(3, 4));
+ gridSizeSteps.add(new Point(4, 4));
+ gridSizeSteps.add(new Point(5, 5));
+ gridSizeSteps.add(new Point(5, 6));
+ gridSizeSteps.add(new Point(6, 6));
+ gridSizeSteps.add(new Point(7, 7));
+
+ int sourceSizeIndex = gridSizeSteps.indexOf(sourceSize);
+ int targetSizeIndex = gridSizeSteps.indexOf(targetSize);
+
+ if (sourceSizeIndex <= -1 || targetSizeIndex <= -1) {
+ throw new Exception("Unable to migrate grid size from " + sourceSize
+ + " to " + targetSize);
+ }
+
+ // Min widget sizes
+ HashMap<String, Point> widgetMinSize = new HashMap<>();
+ for (String s : Utilities.getPrefs(context).getStringSet(KEY_MIGRATION_WIDGET_MINSIZE,
+ Collections.<String>emptySet())) {
+ String[] parts = s.split("#");
+ widgetMinSize.put(parts[0], parsePoint(parts[1]));
+ }
+
+ // Migrate the workspace grid, step by step.
+ while (targetSizeIndex < sourceSizeIndex ) {
+ // We only need to migrate the grid if source size is greater
+ // than the target size.
+ Point stepTargetSize = gridSizeSteps.get(sourceSizeIndex - 1);
+ Point stepSourceSize = gridSizeSteps.get(sourceSizeIndex);
+
+ if (new GridSizeMigrationTask(context,
+ LauncherAppState.getInstance().getInvariantDeviceProfile(),
+ validPackages, widgetMinSize,
+ stepSourceSize, stepTargetSize).migrateWorkspace()) {
+ dbChanged = true;
+ }
+ sourceSizeIndex--;
+ }
+ }
+ if (dbChanged) {
+ // Make sure we haven't removed everything.
+ final Cursor c = context.getContentResolver().query(
+ LauncherSettings.Favorites.CONTENT_URI, null, null, null, null);
+ boolean hasData = c.moveToNext();
+ c.close();
+ if (!hasData) {
+ throw new Exception("Removed every thing during grid resize");
+ }
+ }
+
+ return true;
+ } catch (Exception e) {
+ Log.e(TAG, "Error during grid migration", e);
+
+ return false;
+ } finally {
+ Log.v(TAG, "Workspace migration completed in "
+ + (System.currentTimeMillis() - migrationStartTime));
+
+ // Save current configuration, so that the migration does not run again.
+ prefs.edit()
+ .putString(KEY_MIGRATION_SRC_WORKSPACE_SIZE, gridSizeString)
+ .putString(KEY_MIGRATION_SRC_HOTSEAT_SIZE, hotseatSizeString)
+ .remove(KEY_MIGRATION_WIDGET_MINSIZE)
+ .apply();
+ }
+ }
}
diff --git a/tests/src/com/android/launcher3/model/GridSizeMigrationTaskTest.java b/tests/src/com/android/launcher3/model/GridSizeMigrationTaskTest.java
new file mode 100644
index 000000000..46dac0aab
--- /dev/null
+++ b/tests/src/com/android/launcher3/model/GridSizeMigrationTaskTest.java
@@ -0,0 +1,321 @@
+package com.android.launcher3.model;
+
+import android.content.ContentValues;
+import android.content.Intent;
+import android.database.Cursor;
+import android.graphics.Point;
+import android.test.ProviderTestCase2;
+
+import com.android.launcher3.InvariantDeviceProfile;
+import com.android.launcher3.LauncherModel;
+import com.android.launcher3.LauncherSettings;
+import com.android.launcher3.config.ProviderConfig;
+import com.android.launcher3.util.TestLauncherProvider;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+
+/**
+ * Unit tests for {@link GridSizeMigrationTask}
+ */
+public class GridSizeMigrationTaskTest extends ProviderTestCase2<TestLauncherProvider> {
+
+ private static final long DESKTOP = LauncherSettings.Favorites.CONTAINER_DESKTOP;
+ private static final long HOTSEAT = LauncherSettings.Favorites.CONTAINER_HOTSEAT;
+
+ private static final int APPLICATION = LauncherSettings.Favorites.ITEM_TYPE_APPLICATION;
+ private static final int SHORTCUT = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
+
+ private static final String TEST_PACKAGE = "com.android.launcher3.validpackage";
+ private static final String VALID_INTENT =
+ new Intent(Intent.ACTION_MAIN).setPackage(TEST_PACKAGE).toUri(0);
+
+ private HashSet<String> mValidPackages;
+ private InvariantDeviceProfile mIdp;
+
+ public GridSizeMigrationTaskTest() {
+ super(TestLauncherProvider.class, ProviderConfig.AUTHORITY);
+ }
+
+ @Override
+ protected void setUp() throws Exception {
+ super.setUp();
+ mValidPackages = new HashSet<>();
+ mValidPackages.add(TEST_PACKAGE);
+
+ mIdp = new InvariantDeviceProfile();
+ }
+
+ public void testHotseatMigration_apps_dropped() throws Exception {
+ long[] hotseatItems = {
+ addItem(APPLICATION, 0, HOTSEAT, 0, 0),
+ addItem(SHORTCUT, 1, HOTSEAT, 0, 0),
+ -1,
+ addItem(SHORTCUT, 3, HOTSEAT, 0, 0),
+ addItem(APPLICATION, 4, HOTSEAT, 0, 0),
+ };
+
+ new GridSizeMigrationTask(getMockContext(), mIdp, mValidPackages, 5, 2, 3, 1)
+ .migrateHotseat();
+ // First & last items are dropped as they have the least weight.
+ verifyHotseat(hotseatItems[1], -1, hotseatItems[3]);
+ }
+
+ public void testHotseatMigration_shortcuts_dropped() throws Exception {
+ long[] hotseatItems = {
+ addItem(APPLICATION, 0, HOTSEAT, 0, 0),
+ addItem(30, 1, HOTSEAT, 0, 0),
+ -1,
+ addItem(SHORTCUT, 3, HOTSEAT, 0, 0),
+ addItem(10, 4, HOTSEAT, 0, 0),
+ };
+
+ new GridSizeMigrationTask(getMockContext(), mIdp, mValidPackages, 5, 2, 3, 1)
+ .migrateHotseat();
+ // First & third items are dropped as they have the least weight.
+ verifyHotseat(hotseatItems[1], -1, hotseatItems[4]);
+ }
+
+ private void verifyHotseat(long... sortedIds) {
+ int screenId = 0;
+ int total = 0;
+
+ for (long id : sortedIds) {
+ Cursor c = getMockContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
+ new String[]{LauncherSettings.Favorites._ID},
+ "container=-101 and screen=" + screenId, null, null, null);
+
+ if (id == -1) {
+ assertEquals(0, c.getCount());
+ } else {
+ assertEquals(1, c.getCount());
+ c.moveToNext();
+ assertEquals(id, c.getLong(0));
+ total ++;
+ }
+ c.close();
+
+ screenId++;
+ }
+
+ // Verify that not other entry exist in the DB.
+ Cursor c = getMockContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
+ new String[]{LauncherSettings.Favorites._ID},
+ "container=-101", null, null, null);
+ assertEquals(total, c.getCount());
+ c.close();
+ }
+
+ public void testWorkspace_empty_row_column_removed() throws Exception {
+ long[][][] ids = createGrid(new int[][][]{{
+ { 0, 0, -1, 1},
+ { 3, 1, -1, 4},
+ { -1, -1, -1, -1},
+ { 5, 2, -1, 6},
+ }});
+
+ new GridSizeMigrationTask(getMockContext(), mIdp, mValidPackages, new HashMap<String, Point>(),
+ new Point(4, 4), new Point(3, 3)).migrateWorkspace();
+
+ // Column 2 and row 2 got removed.
+ verifyWorkspace(new long[][][] {{
+ {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
+ {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
+ {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
+ }});
+ }
+
+ public void testWorkspace_new_screen_created() throws Exception {
+ long[][][] ids = createGrid(new int[][][]{{
+ { 0, 0, 0, 1},
+ { 3, 1, 0, 4},
+ { -1, -1, -1, -1},
+ { 5, 2, -1, 6},
+ }});
+
+ new GridSizeMigrationTask(getMockContext(), mIdp, mValidPackages, new HashMap<String, Point>(),
+ new Point(4, 4), new Point(3, 3)).migrateWorkspace();
+
+ // Items in the second column get moved to new screen
+ verifyWorkspace(new long[][][] {{
+ {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
+ {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
+ {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
+ }, {
+ {ids[0][0][2], ids[0][1][2], -1},
+ }});
+ }
+
+ public void testWorkspace_items_merged_in_next_screen() throws Exception {
+ long[][][] ids = createGrid(new int[][][]{{
+ { 0, 0, 0, 1},
+ { 3, 1, 0, 4},
+ { -1, -1, -1, -1},
+ { 5, 2, -1, 6},
+ },{
+ { 0, 0, -1, 1},
+ { 3, 1, -1, 4},
+ }});
+
+ new GridSizeMigrationTask(getMockContext(), mIdp, mValidPackages, new HashMap<String, Point>(),
+ new Point(4, 4), new Point(3, 3)).migrateWorkspace();
+
+ // Items in the second column of the first screen should get placed on the 3rd
+ // row of the second screen
+ verifyWorkspace(new long[][][] {{
+ {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
+ {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
+ {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
+ }, {
+ {ids[1][0][0], ids[1][0][1], ids[1][0][3]},
+ {ids[1][1][0], ids[1][1][1], ids[1][1][3]},
+ {ids[0][0][2], ids[0][1][2], -1},
+ }});
+ }
+
+ public void testWorkspace_items_not_merged_in_next_screen() throws Exception {
+ // First screen has 2 items that need to be moved, but second screen has only one
+ // empty space after migration (top-left corner)
+ long[][][] ids = createGrid(new int[][][]{{
+ { 0, 0, 0, 1},
+ { 3, 1, 0, 4},
+ { -1, -1, -1, -1},
+ { 5, 2, -1, 6},
+ },{
+ { -1, 0, -1, 1},
+ { 3, 1, -1, 4},
+ { -1, -1, -1, -1},
+ { 5, 2, -1, 6},
+ }});
+
+ new GridSizeMigrationTask(getMockContext(), mIdp, mValidPackages, new HashMap<String, Point>(),
+ new Point(4, 4), new Point(3, 3)).migrateWorkspace();
+
+ // Items in the second column of the first screen should get placed on a new screen.
+ verifyWorkspace(new long[][][] {{
+ {ids[0][0][0], ids[0][0][1], ids[0][0][3]},
+ {ids[0][1][0], ids[0][1][1], ids[0][1][3]},
+ {ids[0][3][0], ids[0][3][1], ids[0][3][3]},
+ }, {
+ { -1, ids[1][0][1], ids[1][0][3]},
+ {ids[1][1][0], ids[1][1][1], ids[1][1][3]},
+ {ids[1][3][0], ids[1][3][1], ids[1][3][3]},
+ }, {
+ {ids[0][0][2], ids[0][1][2], -1},
+ }});
+ }
+
+ /**
+ * Initializes the DB with dummy elements to represent the provided grid structure.
+ * @param typeArray A 3d array of item types. {@see #addItem(int, long, long, int, int)} for
+ * type definitions. The first dimension represents the screens and the next
+ * two represent the workspace grid.
+ * @return the same grid representation where each entry is the corresponding item id.
+ */
+ private long[][][] createGrid(int[][][] typeArray) throws Exception {
+ long[][][] ids = new long[typeArray.length][][];
+
+ for (int i = 0; i < typeArray.length; i++) {
+ // Add screen to DB
+ long screenId = LauncherSettings.Settings.call(getMockContentResolver(),
+ LauncherSettings.Settings.METHOD_NEW_SCREEN_ID)
+ .getLong(LauncherSettings.Settings.EXTRA_VALUE);
+
+ ContentValues v = new ContentValues();
+ v.put(LauncherSettings.WorkspaceScreens._ID, screenId);
+ v.put(LauncherSettings.WorkspaceScreens.SCREEN_RANK, i);
+ getMockContentResolver().insert(LauncherSettings.WorkspaceScreens.CONTENT_URI, v);
+
+ ids[i] = new long[typeArray[i].length][];
+ for (int y = 0; y < typeArray[i].length; y++) {
+ ids[i][y] = new long[typeArray[i][y].length];
+ for (int x = 0; x < typeArray[i][y].length; x++) {
+ if (typeArray[i][y][x] < 0) {
+ // Empty cell
+ ids[i][y][x] = -1;
+ } else {
+ ids[i][y][x] = addItem(typeArray[i][y][x], screenId, DESKTOP, x, y);
+ }
+ }
+ }
+ }
+ return ids;
+ }
+
+ /**
+ * Verifies that the workspace items are arranged in the provided order.
+ * @param ids A 3d array where the first dimension represents the screen, and the rest two
+ * represent the workspace grid.
+ */
+ private void verifyWorkspace(long[][][] ids) {
+ ArrayList<Long> allScreens = LauncherModel.loadWorkspaceScreensDb(getMockContext());
+ assertEquals(ids.length, allScreens.size());
+ int total = 0;
+
+ for (int i = 0; i < ids.length; i++) {
+ long screenId = allScreens.get(i);
+ for (int y = 0; y < ids[i].length; y++) {
+ for (int x = 0; x < ids[i][y].length; x++) {
+ long id = ids[i][y][x];
+
+ Cursor c = getMockContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
+ new String[]{LauncherSettings.Favorites._ID},
+ "container=-100 and screen=" + screenId +
+ " and cellX=" + x + " and cellY=" + y, null, null, null);
+ if (id == -1) {
+ assertEquals(0, c.getCount());
+ } else {
+ assertEquals(1, c.getCount());
+ c.moveToNext();
+ assertEquals(id, c.getLong(0));
+ total++;
+ }
+ c.close();
+ }
+ }
+ }
+
+ // Verify that not other entry exist in the DB.
+ Cursor c = getMockContentResolver().query(LauncherSettings.Favorites.CONTENT_URI,
+ new String[]{LauncherSettings.Favorites._ID},
+ "container=-100", null, null, null);
+ assertEquals(total, c.getCount());
+ c.close();
+ }
+
+ /**
+ * Adds a dummy item in the DB.
+ * @param type {@link #APPLICATION} or {@link #SHORTCUT} or >= 2 for
+ * folder (where the type represents the number of items in the folder).
+ */
+ private long addItem(int type, long screen, long container, int x, int y) throws Exception {
+ long id = LauncherSettings.Settings.call(getMockContentResolver(),
+ LauncherSettings.Settings.METHOD_NEW_ITEM_ID)
+ .getLong(LauncherSettings.Settings.EXTRA_VALUE);
+
+ ContentValues values = new ContentValues();
+ values.put(LauncherSettings.Favorites._ID, id);
+ values.put(LauncherSettings.Favorites.CONTAINER, container);
+ values.put(LauncherSettings.Favorites.SCREEN, screen);
+ values.put(LauncherSettings.Favorites.CELLX, x);
+ values.put(LauncherSettings.Favorites.CELLY, y);
+ values.put(LauncherSettings.Favorites.SPANX, 1);
+ values.put(LauncherSettings.Favorites.SPANY, 1);
+
+ if (type == APPLICATION || type == SHORTCUT) {
+ values.put(LauncherSettings.Favorites.ITEM_TYPE, type);
+ values.put(LauncherSettings.Favorites.INTENT, VALID_INTENT);
+ } else {
+ values.put(LauncherSettings.Favorites.ITEM_TYPE,
+ LauncherSettings.Favorites.ITEM_TYPE_FOLDER);
+ // Add folder items.
+ for (int i = 0; i < type; i++) {
+ addItem(APPLICATION, 0, id, 0, 0);
+ }
+ }
+
+ getMockContentResolver().insert(LauncherSettings.Favorites.CONTENT_URI, values);
+ return id;
+ }
+}
diff --git a/tests/src/com/android/launcher3/util/TestLauncherProvider.java b/tests/src/com/android/launcher3/util/TestLauncherProvider.java
new file mode 100644
index 000000000..aef3240ca
--- /dev/null
+++ b/tests/src/com/android/launcher3/util/TestLauncherProvider.java
@@ -0,0 +1,40 @@
+package com.android.launcher3.util;
+
+import android.content.Context;
+
+import com.android.launcher3.LauncherProvider;
+
+/**
+ * An extension of LauncherProvider backed up by in-memory database.
+ */
+public class TestLauncherProvider extends LauncherProvider {
+
+ @Override
+ public boolean onCreate() {
+ return true;
+ }
+
+ @Override
+ protected synchronized void createDbIfNotExists() {
+ if (mOpenHelper == null) {
+ mOpenHelper = new MyDatabaseHelper(getContext(), this);
+ }
+ }
+
+ @Override
+ protected void notifyListeners() { }
+
+ private static class MyDatabaseHelper extends DatabaseHelper {
+ public MyDatabaseHelper(Context context, LauncherProvider provider) {
+ super(context, provider, null);
+ }
+
+ @Override
+ protected long getDefaultUserSerial() {
+ return 0;
+ }
+
+ @Override
+ protected void onEmptyDbCreated() { }
+ }
+} \ No newline at end of file