Moving LoaderTask to a separate class file

Bug: 34112546
Change-Id: I86d93cfb5d3903bfd3878564cbe8b67b64fd8423

3 files changed, 846 insertions, 790 deletions

diff --git a/src/com/android/launcher3/AppWidgetsRestoredReceiver.java b/src/com/android/launcher3/AppWidgetsRestoredReceiver.java
index 84a8bce6e..70be7dae4 100644
--- a/src/com/android/launcher3/AppWidgetsRestoredReceiver.java
+++ b/src/com/android/launcher3/AppWidgetsRestoredReceiver.java
@@ -12,6 +12,7 @@ import android.os.Handler;
 import android.util.Log;
 
 import com.android.launcher3.LauncherSettings.Favorites;
+import com.android.launcher3.model.LoaderTask;
 import com.android.launcher3.util.ContentWriter;
 
 public class AppWidgetsRestoredReceiver extends BroadcastReceiver {
@@ -52,7 +53,7 @@ public class AppWidgetsRestoredReceiver extends BroadcastReceiver {
 
             final AppWidgetProviderInfo provider = widgets.getAppWidgetInfo(newWidgetIds[i]);
             final int state;
-            if (LauncherModel.isValidProvider(provider)) {
+            if (LoaderTask.isValidProvider(provider)) {
                 // This will ensure that we show 'Click to setup' UI if required.
                 state = LauncherAppWidgetInfo.FLAG_UI_NOT_READY;
             } else {
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index 265c7e33a..48c5c562c 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -16,7 +16,6 @@
 
 package com.android.launcher3;
 
-import android.appwidget.AppWidgetProviderInfo;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.ContentProviderOperation;
@@ -24,61 +23,40 @@ import android.content.ContentResolver;
 import android.content.ContentValues;
 import android.content.Context;
 import android.content.Intent;
-import android.content.IntentFilter;
-import android.content.pm.LauncherActivityInfo;
-import android.content.pm.PackageInstaller;
 import android.net.Uri;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Looper;
 import android.os.Process;
-import android.os.SystemClock;
-import android.os.Trace;
 import android.os.UserHandle;
 import android.support.annotation.Nullable;
 import android.text.TextUtils;
 import android.util.Log;
-import android.util.LongSparseArray;
-import android.util.MutableInt;
 import android.util.Pair;
 
-import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.compat.LauncherAppsCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.compat.PackageInstallerCompat.PackageInstallInfo;
 import com.android.launcher3.compat.UserManagerCompat;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.dynamicui.ExtractionUtils;
-import com.android.launcher3.folder.Folder;
-import com.android.launcher3.folder.FolderIcon;
-import com.android.launcher3.folder.FolderIconPreviewVerifier;
 import com.android.launcher3.graphics.LauncherIcons;
-import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.AddWorkspaceItemsTask;
 import com.android.launcher3.model.BgDataModel;
 import com.android.launcher3.model.CacheDataUpdatedTask;
 import com.android.launcher3.model.ExtendedModelTask;
-import com.android.launcher3.model.GridSizeMigrationTask;
-import com.android.launcher3.model.LoaderCursor;
 import com.android.launcher3.model.LoaderResults;
+import com.android.launcher3.model.LoaderTask;
 import com.android.launcher3.model.ModelWriter;
 import com.android.launcher3.model.PackageInstallStateChangedTask;
 import com.android.launcher3.model.PackageItemInfo;
 import com.android.launcher3.model.PackageUpdatedTask;
-import com.android.launcher3.model.SdCardAvailableReceiver;
 import com.android.launcher3.model.ShortcutsChangedTask;
 import com.android.launcher3.model.UserLockStateChangedTask;
 import com.android.launcher3.model.WidgetItem;
-import com.android.launcher3.provider.ImportDataTask;
 import com.android.launcher3.provider.LauncherDbUtils;
 import com.android.launcher3.shortcuts.DeepShortcutManager;
 import com.android.launcher3.shortcuts.ShortcutInfoCompat;
-import com.android.launcher3.shortcuts.ShortcutKey;
 import com.android.launcher3.util.ComponentKey;
-import com.android.launcher3.util.LooperIdleLock;
-import com.android.launcher3.util.ManagedProfileHeuristic;
 import com.android.launcher3.util.MultiHashMap;
-import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.Preconditions;
 import com.android.launcher3.util.Provider;
@@ -89,12 +67,9 @@ import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
-import java.util.Map;
 import java.util.concurrent.CancellationException;
 import java.util.concurrent.Executor;
 
@@ -105,7 +80,7 @@ import java.util.concurrent.Executor;
  */
 public class LauncherModel extends BroadcastReceiver
         implements LauncherAppsCompat.OnAppsChangedCallbackCompat {
-    static final boolean DEBUG_LOADERS = false;
+    static final boolean DEBUG_TASKS = false;
     private static final boolean DEBUG_RECEIVER = false;
 
     static final String TAG = "Launcher.Model";
@@ -113,7 +88,8 @@ public class LauncherModel extends BroadcastReceiver
     private final MainThreadExecutor mUiExecutor = new MainThreadExecutor();
     @Thunk final LauncherAppState mApp;
     @Thunk final Object mLock = new Object();
-    @Thunk LoaderTask mLoaderTask;
+    @Thunk
+    LoaderTask mLoaderTask;
     @Thunk boolean mIsLoaderTaskRunning;
 
     @Thunk static final HandlerThread sWorkerThread = new HandlerThread("launcher-loader");
@@ -610,761 +586,6 @@ public class LauncherModel extends BroadcastReceiver
     }
 
     /**
-     * Runnable for the thread that loads the contents of the launcher:
-     *   - workspace icons
-     *   - widgets
-     *   - all apps icons
-     *   - deep shortcuts within apps
-     */
-    private static class LoaderTask implements Runnable {
-        private final LauncherAppState mApp;
-        private final AllAppsList mBgAllAppsList;
-        private final BgDataModel mBgDataModel;
-
-        private final LoaderResults mResults;
-
-        private final LauncherAppsCompat mLauncherApps;
-        private final UserManagerCompat mUserManager;
-        private final DeepShortcutManager mShortcutManager;
-        private final PackageInstallerCompat mPackageInstaller;
-        private final AppWidgetManagerCompat mAppWidgetManager;
-        private final IconCache mIconCache;
-
-        private boolean mStopped;
-
-        LoaderTask(LauncherAppState app, AllAppsList bgAllAppsList, BgDataModel dataModel,
-                LoaderResults results) {
-            mApp = app;
-            mBgAllAppsList = bgAllAppsList;
-            mBgDataModel = dataModel;
-            mResults = results;
-
-            mLauncherApps = LauncherAppsCompat.getInstance(mApp.getContext());
-            mUserManager = UserManagerCompat.getInstance(mApp.getContext());
-            mShortcutManager = DeepShortcutManager.getInstance(mApp.getContext());
-            mPackageInstaller = PackageInstallerCompat.getInstance(mApp.getContext());
-            mAppWidgetManager = AppWidgetManagerCompat.getInstance(mApp.getContext());
-            mIconCache = mApp.getIconCache();
-        }
-
-        private synchronized void waitForIdle() {
-            // Wait until the either we're stopped or the other threads are done.
-            // This way we don't start loading all apps until the workspace has settled
-            // down.
-            LooperIdleLock idleLock = new LooperIdleLock(this, Looper.getMainLooper());
-            // Just in case mFlushingWorkerThread changes but we aren't woken up,
-            // wait no longer than 1sec at a time
-            while (!mStopped && idleLock.awaitLocked(1000));
-        }
-
-        private synchronized void verifyNotStopped() throws CancellationException {
-            if (mStopped) {
-                throw new CancellationException("Loader stopped");
-            }
-        }
-
-        public void run() {
-            synchronized (this) {
-                // Skip fast if we are already stopped.
-                if (mStopped) {
-                    return;
-                }
-            }
-
-            try (LoaderTransaction transaction = mApp.getModel().beginLoader(this)) {
-                long now = 0;
-                if (DEBUG_LOADERS) Log.d(TAG, "step 1.1: loading workspace");
-                loadWorkspace();
-
-                verifyNotStopped();
-                if (DEBUG_LOADERS) Log.d(TAG, "step 1.2: bind workspace workspace");
-                mResults.bindWorkspace();
-
-                // Take a break
-                if (DEBUG_LOADERS) {
-                    Log.d(TAG, "step 1 completed, wait for idle");
-                    now = SystemClock.uptimeMillis();
-                }
-                waitForIdle();
-                if (DEBUG_LOADERS) Log.d(TAG, "Waited " + (SystemClock.uptimeMillis() - now) + "ms");
-                verifyNotStopped();
-
-                // second step
-                if (DEBUG_LOADERS) Log.d(TAG, "step 2.1: loading all apps");
-                loadAllApps();
-
-                if (DEBUG_LOADERS) Log.d(TAG, "step 2.2: Binding all apps");
-                verifyNotStopped();
-                mResults.bindAllApps();
-
-                verifyNotStopped();
-                if (DEBUG_LOADERS) Log.d(TAG, "step 2.3: Update icon cache");
-                updateIconCache();
-
-                // Take a break
-                if (DEBUG_LOADERS) {
-                    Log.d(TAG, "step 2 completed, wait for idle");
-                    now = SystemClock.uptimeMillis();
-                }
-                waitForIdle();
-                if (DEBUG_LOADERS) Log.d(TAG, "Waited " + (SystemClock.uptimeMillis() - now) + "ms");
-                verifyNotStopped();
-
-                // third step
-                if (DEBUG_LOADERS) Log.d(TAG, "step 3.1: loading deep shortcuts");
-                loadDeepShortcuts();
-
-                verifyNotStopped();
-                if (DEBUG_LOADERS) Log.d(TAG, "step 3.2: bind deep shortcuts");
-                mResults.bindDeepShortcuts();
-
-                // Take a break
-                if (DEBUG_LOADERS) Log.d(TAG, "step 3 completed, wait for idle");
-                waitForIdle();
-                verifyNotStopped();
-
-                // fourth step
-                if (DEBUG_LOADERS) Log.d(TAG, "step 4.1: loading widgets");
-                mBgDataModel.widgetsModel.update(mApp, null);
-
-                verifyNotStopped();
-                if (DEBUG_LOADERS) Log.d(TAG, "step 4.2: Binding widgets");
-                mResults.bindWidgets();
-
-                transaction.commit();
-            } catch (CancellationException e) {
-              // Loader stopped, ignore
-            }
-        }
-
-        public synchronized void stopLocked() {
-            mStopped = true;
-            this.notify();
-        }
-
-        private void loadWorkspace() {
-            if (LauncherAppState.PROFILE_STARTUP) {
-                Trace.beginSection("Loading Workspace");
-            }
-
-            final Context context = mApp.getContext();
-            final ContentResolver contentResolver = context.getContentResolver();
-            final PackageManagerHelper pmHelper = new PackageManagerHelper(context);
-            final boolean isSafeMode = pmHelper.isSafeMode();
-            final boolean isSdCardReady = Utilities.isBootCompleted();
-            final MultiHashMap<UserHandle, String> pendingPackages = new MultiHashMap<>();
-
-            boolean clearDb = false;
-            try {
-                ImportDataTask.performImportIfPossible(context);
-            } catch (Exception e) {
-                // Migration failed. Clear workspace.
-                clearDb = true;
-            }
-
-            if (!clearDb && GridSizeMigrationTask.ENABLED &&
-                    !GridSizeMigrationTask.migrateGridIfNeeded(context)) {
-                // Migration failed. Clear workspace.
-                clearDb = true;
-            }
-
-            if (clearDb) {
-                Log.d(TAG, "loadWorkspace: resetting launcher database");
-                LauncherSettings.Settings.call(contentResolver,
-                        LauncherSettings.Settings.METHOD_CREATE_EMPTY_DB);
-            }
-
-            Log.d(TAG, "loadWorkspace: loading default favorites");
-            LauncherSettings.Settings.call(contentResolver,
-                    LauncherSettings.Settings.METHOD_LOAD_DEFAULT_FAVORITES);
-
-            synchronized (mBgDataModel) {
-                mBgDataModel.clear();
-
-                final HashMap<String, Integer> installingPkgs =
-                        mPackageInstaller.updateAndGetActiveSessionCache();
-                mBgDataModel.workspaceScreens.addAll(loadWorkspaceScreensDb(context));
-
-                Map<ShortcutKey, ShortcutInfoCompat> shortcutKeyToPinnedShortcuts = new HashMap<>();
-                final LoaderCursor c = new LoaderCursor(contentResolver.query(
-                        LauncherSettings.Favorites.CONTENT_URI, null, null, null, null), mApp);
-
-                HashMap<ComponentKey, AppWidgetProviderInfo> widgetProvidersMap = null;
-
-                try {
-                    final int appWidgetIdIndex = c.getColumnIndexOrThrow(
-                            LauncherSettings.Favorites.APPWIDGET_ID);
-                    final int appWidgetProviderIndex = c.getColumnIndexOrThrow(
-                            LauncherSettings.Favorites.APPWIDGET_PROVIDER);
-                    final int spanXIndex = c.getColumnIndexOrThrow
-                            (LauncherSettings.Favorites.SPANX);
-                    final int spanYIndex = c.getColumnIndexOrThrow(
-                            LauncherSettings.Favorites.SPANY);
-                    final int rankIndex = c.getColumnIndexOrThrow(
-                            LauncherSettings.Favorites.RANK);
-                    final int optionsIndex = c.getColumnIndexOrThrow(
-                            LauncherSettings.Favorites.OPTIONS);
-
-                    final LongSparseArray<UserHandle> allUsers = c.allUsers;
-                    final LongSparseArray<Boolean> quietMode = new LongSparseArray<>();
-                    final LongSparseArray<Boolean> unlockedUsers = new LongSparseArray<>();
-                    for (UserHandle user : mUserManager.getUserProfiles()) {
-                        long serialNo = mUserManager.getSerialNumberForUser(user);
-                        allUsers.put(serialNo, user);
-                        quietMode.put(serialNo, mUserManager.isQuietModeEnabled(user));
-
-                        boolean userUnlocked = mUserManager.isUserUnlocked(user);
-
-                        // We can only query for shortcuts when the user is unlocked.
-                        if (userUnlocked) {
-                            List<ShortcutInfoCompat> pinnedShortcuts =
-                                    mShortcutManager.queryForPinnedShortcuts(null, user);
-                            if (mShortcutManager.wasLastCallSuccess()) {
-                                for (ShortcutInfoCompat shortcut : pinnedShortcuts) {
-                                    shortcutKeyToPinnedShortcuts.put(ShortcutKey.fromInfo(shortcut),
-                                            shortcut);
-                                }
-                            } else {
-                                // Shortcut manager can fail due to some race condition when the
-                                // lock state changes too frequently. For the purpose of the loading
-                                // shortcuts, consider the user is still locked.
-                                userUnlocked = false;
-                            }
-                        }
-                        unlockedUsers.put(serialNo, userUnlocked);
-                    }
-
-                    ShortcutInfo info;
-                    LauncherAppWidgetInfo appWidgetInfo;
-                    Intent intent;
-                    String targetPkg;
-
-                    FolderIconPreviewVerifier verifier =
-                            new FolderIconPreviewVerifier(mApp.getInvariantDeviceProfile());
-                    while (!mStopped && c.moveToNext()) {
-                        try {
-                            if (c.user == null) {
-                                // User has been deleted, remove the item.
-                                c.markDeleted("User has been deleted");
-                                continue;
-                            }
-
-                            boolean allowMissingTarget = false;
-                            switch (c.itemType) {
-                            case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
-                            case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
-                            case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT:
-                                intent = c.parseIntent();
-                                if (intent == null) {
-                                    c.markDeleted("Invalid or null intent");
-                                    continue;
-                                }
-
-                                int disabledState = quietMode.get(c.serialNumber) ?
-                                        ShortcutInfo.FLAG_DISABLED_QUIET_USER : 0;
-                                ComponentName cn = intent.getComponent();
-                                targetPkg = cn == null ? intent.getPackage() : cn.getPackageName();
-
-                                if (!Process.myUserHandle().equals(c.user)) {
-                                    if (c.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) {
-                                        c.markDeleted("Legacy shortcuts are only allowed for default user");
-                                        continue;
-                                    } else if (c.restoreFlag != 0) {
-                                        // Don't restore items for other profiles.
-                                        c.markDeleted("Restore from managed profile not supported");
-                                        continue;
-                                    }
-                                }
-                                if (TextUtils.isEmpty(targetPkg) &&
-                                        c.itemType != LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) {
-                                    c.markDeleted("Only legacy shortcuts can have null package");
-                                    continue;
-                                }
-
-                                // If there is no target package, its an implicit intent
-                                // (legacy shortcut) which is always valid
-                                boolean validTarget = TextUtils.isEmpty(targetPkg) ||
-                                        mLauncherApps.isPackageEnabledForProfile(targetPkg, c.user);
-
-                                if (cn != null && validTarget) {
-                                    // If the apk is present and the shortcut points to a specific
-                                    // component.
-
-                                    // If the component is already present
-                                    if (mLauncherApps.isActivityEnabledForProfile(cn, c.user)) {
-                                        // no special handling necessary for this item
-                                        c.markRestored();
-                                    } else {
-                                        if (c.hasRestoreFlag(ShortcutInfo.FLAG_AUTOINSTALL_ICON)) {
-                                            // We allow auto install apps to have their intent
-                                            // updated after an install.
-                                            intent = pmHelper.getAppLaunchIntent(targetPkg, c.user);
-                                            if (intent != null) {
-                                                c.restoreFlag = 0;
-                                                c.updater().put(
-                                                        LauncherSettings.Favorites.INTENT,
-                                                        intent.toUri(0)).commit();
-                                                cn = intent.getComponent();
-                                            } else {
-                                                c.markDeleted("Unable to find a launch target");
-                                                continue;
-                                            }
-                                        } else {
-                                            // The app is installed but the component is no
-                                            // longer available.
-                                            c.markDeleted("Invalid component removed: " + cn);
-                                            continue;
-                                        }
-                                    }
-                                }
-                                // else if cn == null => can't infer much, leave it
-                                // else if !validPkg => could be restored icon or missing sd-card
-
-                                if (!TextUtils.isEmpty(targetPkg) && !validTarget) {
-                                    // Points to a valid app (superset of cn != null) but the apk
-                                    // is not available.
-
-                                    if (c.restoreFlag != 0) {
-                                        // Package is not yet available but might be
-                                        // installed later.
-                                        FileLog.d(TAG, "package not yet restored: " + targetPkg);
-
-                                        if (c.hasRestoreFlag(ShortcutInfo.FLAG_RESTORE_STARTED)) {
-                                            // Restore has started once.
-                                        } else if (installingPkgs.containsKey(targetPkg)) {
-                                            // App restore has started. Update the flag
-                                            c.restoreFlag |= ShortcutInfo.FLAG_RESTORE_STARTED;
-                                            c.updater().commit();
-                                        } else {
-                                            c.markDeleted("Unrestored app removed: " + targetPkg);
-                                            continue;
-                                        }
-                                    } else if (pmHelper.isAppOnSdcard(targetPkg, c.user)) {
-                                        // Package is present but not available.
-                                        disabledState |= ShortcutInfo.FLAG_DISABLED_NOT_AVAILABLE;
-                                        // Add the icon on the workspace anyway.
-                                        allowMissingTarget = true;
-                                    } else if (!isSdCardReady) {
-                                        // SdCard is not ready yet. Package might get available,
-                                        // once it is ready.
-                                        Log.d(TAG, "Missing pkg, will check later: " + targetPkg);
-                                        pendingPackages.addToList(c.user, targetPkg);
-                                        // Add the icon on the workspace anyway.
-                                        allowMissingTarget = true;
-                                    } else {
-                                        // Do not wait for external media load anymore.
-                                        c.markDeleted("Invalid package removed: " + targetPkg);
-                                        continue;
-                                    }
-                                }
-
-                                if (validTarget) {
-                                    // The shortcut points to a valid target (either no target
-                                    // or something which is ready to be used)
-                                    c.markRestored();
-                                }
-
-                                boolean useLowResIcon = !c.isOnWorkspaceOrHotseat() &&
-                                        !verifier.isItemInPreview(c.getInt(rankIndex));
-
-                                if (c.restoreFlag != 0) {
-                                    // Already verified above that user is same as default user
-                                    info = c.getRestoredItemInfo(intent);
-                                } else if (c.itemType ==
-                                        LauncherSettings.Favorites.ITEM_TYPE_APPLICATION) {
-                                    info = c.getAppShortcutInfo(
-                                            intent, allowMissingTarget, useLowResIcon);
-                                } else if (c.itemType ==
-                                        LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
-
-                                    ShortcutKey key = ShortcutKey.fromIntent(intent, c.user);
-                                    if (unlockedUsers.get(c.serialNumber)) {
-                                        ShortcutInfoCompat pinnedShortcut =
-                                                shortcutKeyToPinnedShortcuts.get(key);
-                                        if (pinnedShortcut == null) {
-                                            // The shortcut is no longer valid.
-                                            c.markDeleted("Pinned shortcut not found");
-                                            continue;
-                                        }
-                                        info = new ShortcutInfo(pinnedShortcut, context);
-                                        info.iconBitmap = LauncherIcons
-                                                .createShortcutIcon(pinnedShortcut, context);
-                                        if (pmHelper.isAppSuspended(
-                                                pinnedShortcut.getPackage(), info.user)) {
-                                            info.isDisabled |= ShortcutInfo.FLAG_DISABLED_SUSPENDED;
-                                        }
-                                        intent = info.intent;
-                                    } else {
-                                        // Create a shortcut info in disabled mode for now.
-                                        info = c.loadSimpleShortcut();
-                                        info.isDisabled |= ShortcutInfo.FLAG_DISABLED_LOCKED_USER;
-                                    }
-                                } else { // item type == ITEM_TYPE_SHORTCUT
-                                    info = c.loadSimpleShortcut();
-
-                                    // Shortcuts are only available on the primary profile
-                                    if (!TextUtils.isEmpty(targetPkg)
-                                            && pmHelper.isAppSuspended(targetPkg, c.user)) {
-                                        disabledState |= ShortcutInfo.FLAG_DISABLED_SUSPENDED;
-                                    }
-
-                                    // App shortcuts that used to be automatically added to Launcher
-                                    // didn't always have the correct intent flags set, so do that
-                                    // here
-                                    if (intent.getAction() != null &&
-                                        intent.getCategories() != null &&
-                                        intent.getAction().equals(Intent.ACTION_MAIN) &&
-                                        intent.getCategories().contains(Intent.CATEGORY_LAUNCHER)) {
-                                        intent.addFlags(
-                                            Intent.FLAG_ACTIVITY_NEW_TASK |
-                                            Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
-                                    }
-                                }
-
-                                if (info != null) {
-                                    c.applyCommonProperties(info);
-
-                                    info.intent = intent;
-                                    info.rank = c.getInt(rankIndex);
-                                    info.spanX = 1;
-                                    info.spanY = 1;
-                                    info.isDisabled |= disabledState;
-                                    if (isSafeMode && !Utilities.isSystemApp(context, intent)) {
-                                        info.isDisabled |= ShortcutInfo.FLAG_DISABLED_SAFEMODE;
-                                    }
-
-                                    if (c.restoreFlag != 0 && !TextUtils.isEmpty(targetPkg)) {
-                                        Integer progress = installingPkgs.get(targetPkg);
-                                        if (progress != null) {
-                                            info.setInstallProgress(progress);
-                                        } else {
-                                            info.status &= ~ShortcutInfo.FLAG_INSTALL_SESSION_ACTIVE;
-                                        }
-                                    }
-
-                                    c.checkAndAddItem(info, mBgDataModel);
-                                } else {
-                                    throw new RuntimeException("Unexpected null ShortcutInfo");
-                                }
-                                break;
-
-                            case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
-                                FolderInfo folderInfo = mBgDataModel.findOrMakeFolder(c.id);
-                                c.applyCommonProperties(folderInfo);
-
-                                // Do not trim the folder label, as is was set by the user.
-                                folderInfo.title = c.getString(c.titleIndex);
-                                folderInfo.spanX = 1;
-                                folderInfo.spanY = 1;
-                                folderInfo.options = c.getInt(optionsIndex);
-
-                                // no special handling required for restored folders
-                                c.markRestored();
-
-                                c.checkAndAddItem(folderInfo, mBgDataModel);
-                                break;
-
-                            case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
-                            case LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET:
-                                // Read all Launcher-specific widget details
-                                boolean customWidget = c.itemType ==
-                                    LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
-
-                                int appWidgetId = c.getInt(appWidgetIdIndex);
-                                String savedProvider = c.getString(appWidgetProviderIndex);
-
-                                final ComponentName component =
-                                        ComponentName.unflattenFromString(savedProvider);
-
-                                final boolean isIdValid = !c.hasRestoreFlag(
-                                        LauncherAppWidgetInfo.FLAG_ID_NOT_VALID);
-                                final boolean wasProviderReady = !c.hasRestoreFlag(
-                                        LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY);
-
-                                if (widgetProvidersMap == null) {
-                                    widgetProvidersMap = mAppWidgetManager.getAllProvidersMap();
-                                }
-                                final AppWidgetProviderInfo provider = widgetProvidersMap.get(
-                                        new ComponentKey(
-                                                ComponentName.unflattenFromString(savedProvider),
-                                                c.user));
-
-                                final boolean isProviderReady = isValidProvider(provider);
-                                if (!isSafeMode && !customWidget &&
-                                        wasProviderReady && !isProviderReady) {
-                                    c.markDeleted(
-                                            "Deleting widget that isn't installed anymore: "
-                                            + provider);
-                                } else {
-                                    if (isProviderReady) {
-                                        appWidgetInfo = new LauncherAppWidgetInfo(appWidgetId,
-                                                provider.provider);
-
-                                        // The provider is available. So the widget is either
-                                        // available or not available. We do not need to track
-                                        // any future restore updates.
-                                        int status = c.restoreFlag &
-                                                ~LauncherAppWidgetInfo.FLAG_RESTORE_STARTED;
-                                        if (!wasProviderReady) {
-                                            // If provider was not previously ready, update the
-                                            // status and UI flag.
-
-                                            // Id would be valid only if the widget restore broadcast was received.
-                                            if (isIdValid) {
-                                                status |= LauncherAppWidgetInfo.FLAG_UI_NOT_READY;
-                                            } else {
-                                                status &= ~LauncherAppWidgetInfo
-                                                        .FLAG_PROVIDER_NOT_READY;
-                                            }
-                                        }
-                                        appWidgetInfo.restoreStatus = status;
-                                    } else {
-                                        Log.v(TAG, "Widget restore pending id=" + c.id
-                                                + " appWidgetId=" + appWidgetId
-                                                + " status =" + c.restoreFlag);
-                                        appWidgetInfo = new LauncherAppWidgetInfo(appWidgetId,
-                                                component);
-                                        appWidgetInfo.restoreStatus = c.restoreFlag;
-                                        Integer installProgress = installingPkgs.get(component.getPackageName());
-
-                                        if (c.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_RESTORE_STARTED)) {
-                                            // Restore has started once.
-                                        } else if (installProgress != null) {
-                                            // App restore has started. Update the flag
-                                            appWidgetInfo.restoreStatus |=
-                                                    LauncherAppWidgetInfo.FLAG_RESTORE_STARTED;
-                                        } else if (!isSafeMode) {
-                                            c.markDeleted("Unrestored widget removed: " + component);
-                                            continue;
-                                        }
-
-                                        appWidgetInfo.installProgress =
-                                                installProgress == null ? 0 : installProgress;
-                                    }
-                                    if (appWidgetInfo.hasRestoreFlag(
-                                            LauncherAppWidgetInfo.FLAG_DIRECT_CONFIG)) {
-                                        appWidgetInfo.bindOptions = c.parseIntent();
-                                    }
-
-                                    c.applyCommonProperties(appWidgetInfo);
-                                    appWidgetInfo.spanX = c.getInt(spanXIndex);
-                                    appWidgetInfo.spanY = c.getInt(spanYIndex);
-                                    appWidgetInfo.user = c.user;
-
-                                    if (!c.isOnWorkspaceOrHotseat()) {
-                                        c.markDeleted("Widget found where container != " +
-                                                "CONTAINER_DESKTOP nor CONTAINER_HOTSEAT - ignoring!");
-                                        continue;
-                                    }
-
-                                    if (!customWidget) {
-                                        String providerName =
-                                                appWidgetInfo.providerName.flattenToString();
-                                        if (!providerName.equals(savedProvider) ||
-                                                (appWidgetInfo.restoreStatus != c.restoreFlag)) {
-                                            c.updater()
-                                                    .put(LauncherSettings.Favorites.APPWIDGET_PROVIDER,
-                                                            providerName)
-                                                    .put(LauncherSettings.Favorites.RESTORED,
-                                                            appWidgetInfo.restoreStatus)
-                                                    .commit();
-                                        }
-                                    }
-
-                                    if (appWidgetInfo.restoreStatus !=
-                                            LauncherAppWidgetInfo.RESTORE_COMPLETED) {
-                                        String pkg = appWidgetInfo.providerName.getPackageName();
-                                        appWidgetInfo.pendingItemInfo = new PackageItemInfo(pkg);
-                                        appWidgetInfo.pendingItemInfo.user = appWidgetInfo.user;
-                                        mIconCache.getTitleAndIconForApp(
-                                                appWidgetInfo.pendingItemInfo, false);
-                                    }
-
-                                    c.checkAndAddItem(appWidgetInfo, mBgDataModel);
-                                }
-                                break;
-                            }
-                        } catch (Exception e) {
-                            Log.e(TAG, "Desktop items loading interrupted", e);
-                        }
-                    }
-                } finally {
-                    Utilities.closeSilently(c);
-                }
-
-                // Break early if we've stopped loading
-                if (mStopped) {
-                    mBgDataModel.clear();
-                    return;
-                }
-
-                // Remove dead items
-                if (c.commitDeleted()) {
-                    // Remove any empty folder
-                    ArrayList<Long> deletedFolderIds = (ArrayList<Long>) LauncherSettings.Settings
-                            .call(contentResolver,
-                                    LauncherSettings.Settings.METHOD_DELETE_EMPTY_FOLDERS)
-                            .getSerializable(LauncherSettings.Settings.EXTRA_VALUE);
-                    for (long folderId : deletedFolderIds) {
-                        mBgDataModel.workspaceItems.remove(mBgDataModel.folders.get(folderId));
-                        mBgDataModel.folders.remove(folderId);
-                        mBgDataModel.itemsIdMap.remove(folderId);
-                    }
-
-                    // Remove any ghost widgets
-                    LauncherSettings.Settings.call(contentResolver,
-                            LauncherSettings.Settings.METHOD_REMOVE_GHOST_WIDGETS);
-                }
-
-                // Unpin shortcuts that don't exist on the workspace.
-                HashSet<ShortcutKey> pendingShortcuts =
-                        InstallShortcutReceiver.getPendingShortcuts(context);
-                for (ShortcutKey key : shortcutKeyToPinnedShortcuts.keySet()) {
-                    MutableInt numTimesPinned = mBgDataModel.pinnedShortcutCounts.get(key);
-                    if ((numTimesPinned == null || numTimesPinned.value == 0)
-                            && !pendingShortcuts.contains(key)) {
-                        // Shortcut is pinned but doesn't exist on the workspace; unpin it.
-                        mShortcutManager.unpinShortcut(key);
-                    }
-                }
-
-                FolderIconPreviewVerifier verifier =
-                        new FolderIconPreviewVerifier(mApp.getInvariantDeviceProfile());
-                // Sort the folder items and make sure all items in the preview are high resolution.
-                for (FolderInfo folder : mBgDataModel.folders) {
-                    Collections.sort(folder.contents, Folder.ITEM_POS_COMPARATOR);
-                    verifier.setFolderInfo(folder);
-
-                    int numItemsInPreview = 0;
-                    for (ShortcutInfo info : folder.contents) {
-                        if (info.usingLowResIcon
-                                && info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION
-                                && verifier.isItemInPreview(info.rank)) {
-                            mIconCache.getTitleAndIcon(info, false);
-                            numItemsInPreview++;
-                        }
-
-                        if (numItemsInPreview >= FolderIcon.NUM_ITEMS_IN_PREVIEW) {
-                            break;
-                        }
-                    }
-                }
-
-                c.commitRestoredItems();
-                if (!isSdCardReady && !pendingPackages.isEmpty()) {
-                    context.registerReceiver(
-                            new SdCardAvailableReceiver(mApp, pendingPackages),
-                            new IntentFilter(Intent.ACTION_BOOT_COMPLETED),
-                            null,
-                            sWorker);
-                }
-
-                // Remove any empty screens
-                ArrayList<Long> unusedScreens = new ArrayList<>(mBgDataModel.workspaceScreens);
-                for (ItemInfo item: mBgDataModel.itemsIdMap) {
-                    long screenId = item.screenId;
-                    if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP &&
-                            unusedScreens.contains(screenId)) {
-                        unusedScreens.remove(screenId);
-                    }
-                }
-
-                // If there are any empty screens remove them, and update.
-                if (unusedScreens.size() != 0) {
-                    mBgDataModel.workspaceScreens.removeAll(unusedScreens);
-                    updateWorkspaceScreenOrder(context, mBgDataModel.workspaceScreens);
-                }
-            }
-            if (LauncherAppState.PROFILE_STARTUP) {
-                Trace.endSection();
-            }
-        }
-
-        private void updateIconCache() {
-            // Ignore packages which have a promise icon.
-            HashSet<String> packagesToIgnore = new HashSet<>();
-            synchronized (mBgDataModel) {
-                for (ItemInfo info : mBgDataModel.itemsIdMap) {
-                    if (info instanceof ShortcutInfo) {
-                        ShortcutInfo si = (ShortcutInfo) info;
-                        if (si.isPromise() && si.getTargetComponent() != null) {
-                            packagesToIgnore.add(si.getTargetComponent().getPackageName());
-                        }
-                    } else if (info instanceof LauncherAppWidgetInfo) {
-                        LauncherAppWidgetInfo lawi = (LauncherAppWidgetInfo) info;
-                        if (lawi.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY)) {
-                            packagesToIgnore.add(lawi.providerName.getPackageName());
-                        }
-                    }
-                }
-            }
-            mIconCache.updateDbIcons(packagesToIgnore);
-        }
-
-        private void loadAllApps() {
-            final long loadTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
-
-            final List<UserHandle> profiles = mUserManager.getUserProfiles();
-
-            // Clear the list of apps
-            mBgAllAppsList.clear();
-            for (UserHandle user : profiles) {
-                // Query for the set of apps
-                final long qiaTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
-                final List<LauncherActivityInfo> apps = mLauncherApps.getActivityList(null, user);
-                if (DEBUG_LOADERS) {
-                    Log.d(TAG, "getActivityList took "
-                            + (SystemClock.uptimeMillis()-qiaTime) + "ms for user " + user);
-                    Log.d(TAG, "getActivityList got " + apps.size() + " apps for user " + user);
-                }
-                // Fail if we don't have any apps
-                // TODO: Fix this. Only fail for the current user.
-                if (apps == null || apps.isEmpty()) {
-                    return;
-                }
-                boolean quietMode = mUserManager.isQuietModeEnabled(user);
-                // Create the ApplicationInfos
-                for (int i = 0; i < apps.size(); i++) {
-                    LauncherActivityInfo app = apps.get(i);
-                    // This builds the icon bitmaps.
-                    mBgAllAppsList.add(new AppInfo(app, user, quietMode), app);
-                }
-
-                ManagedProfileHeuristic.onAllAppsLoaded(mApp.getContext(), apps, user);
-            }
-
-            if (FeatureFlags.LAUNCHER3_PROMISE_APPS_IN_ALL_APPS) {
-                // get all active sessions and add them to the all apps list
-                for (PackageInstaller.SessionInfo info :
-                        mPackageInstaller.getAllVerifiedSessions()) {
-                    mBgAllAppsList.addPromiseApp(mApp.getContext(),
-                            PackageInstallInfo.fromInstallingState(info));
-                }
-            }
-
-            mBgAllAppsList.added = new ArrayList<>();
-            if (DEBUG_LOADERS) {
-                Log.d(TAG, "All apps loaded in in "
-                        + (SystemClock.uptimeMillis() - loadTime) + "ms");
-            }
-        }
-
-        private void loadDeepShortcuts() {
-            mBgDataModel.deepShortcutMap.clear();
-            mBgDataModel.hasShortcutHostPermission = mShortcutManager.hasHostPermission();
-            if (mBgDataModel.hasShortcutHostPermission) {
-                for (UserHandle user : mUserManager.getUserProfiles()) {
-                    if (mUserManager.isUserUnlocked(user)) {
-                        List<ShortcutInfoCompat> shortcuts =
-                                mShortcutManager.queryForAllShortcuts(user);
-                        mBgDataModel.updateDeepShortcutMap(null, user, shortcuts);
-                    }
-                }
-            }
-        }
-    }
-
-    /**
      * Refreshes the cached shortcuts if the shortcut permission has changed.
      * Current implementation simply reloads the workspace, but it can be optimized to
      * use partial updates similar to {@link UserManagerCompat}
@@ -1417,7 +638,7 @@ public class LauncherModel extends BroadcastReceiver
         @Override
         public final void run() {
             if (!mModel.mModelLoaded) {
-                if (DEBUG_LOADERS) {
+                if (DEBUG_TASKS) {
                     Log.d(TAG, "Ignoring model task since loader is pending=" + this);
                 }
                 // Loader has not yet run.
@@ -1489,11 +710,6 @@ public class LauncherModel extends BroadcastReceiver
         });
     }
 
-    static boolean isValidProvider(AppWidgetProviderInfo provider) {
-        return (provider != null) && (provider.provider != null)
-                && (provider.provider.getPackageName() != null);
-    }
-
     public void dumpState(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) {
         if (args.length > 0 && TextUtils.equals(args[0], "--all")) {
             writer.println(prefix + "All apps list: size=" + mBgAllAppsList.data.size());
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
new file mode 100644
index 000000000..bcf516eed
--- /dev/null
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -0,0 +1,839 @@
+/*
+ * Copyright (C) 2017 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.model;
+
+import android.appwidget.AppWidgetProviderInfo;
+import android.content.ComponentName;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.LauncherActivityInfo;
+import android.content.pm.PackageInstaller;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Process;
+import android.os.SystemClock;
+import android.os.Trace;
+import android.os.UserHandle;
+import android.text.TextUtils;
+import android.util.Log;
+import android.util.LongSparseArray;
+import android.util.MutableInt;
+
+import com.android.launcher3.AllAppsList;
+import com.android.launcher3.AppInfo;
+import com.android.launcher3.FolderInfo;
+import com.android.launcher3.IconCache;
+import com.android.launcher3.InstallShortcutReceiver;
+import com.android.launcher3.ItemInfo;
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.LauncherAppWidgetInfo;
+import com.android.launcher3.LauncherModel;
+import com.android.launcher3.LauncherSettings;
+import com.android.launcher3.ShortcutInfo;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.compat.AppWidgetManagerCompat;
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.compat.PackageInstallerCompat;
+import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.folder.Folder;
+import com.android.launcher3.folder.FolderIcon;
+import com.android.launcher3.folder.FolderIconPreviewVerifier;
+import com.android.launcher3.graphics.LauncherIcons;
+import com.android.launcher3.logging.FileLog;
+import com.android.launcher3.provider.ImportDataTask;
+import com.android.launcher3.shortcuts.DeepShortcutManager;
+import com.android.launcher3.shortcuts.ShortcutInfoCompat;
+import com.android.launcher3.shortcuts.ShortcutKey;
+import com.android.launcher3.util.ComponentKey;
+import com.android.launcher3.util.LooperIdleLock;
+import com.android.launcher3.util.ManagedProfileHeuristic;
+import com.android.launcher3.util.MultiHashMap;
+import com.android.launcher3.util.PackageManagerHelper;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CancellationException;
+
+/**
+ * Runnable for the thread that loads the contents of the launcher:
+ *   - workspace icons
+ *   - widgets
+ *   - all apps icons
+ *   - deep shortcuts within apps
+ */
+public class LoaderTask implements Runnable {
+    private static final boolean DEBUG_LOADERS = false;
+    private static final String TAG = "LoaderTask";
+
+    private final LauncherAppState mApp;
+    private final AllAppsList mBgAllAppsList;
+    private final BgDataModel mBgDataModel;
+
+    private final LoaderResults mResults;
+
+    private final LauncherAppsCompat mLauncherApps;
+    private final UserManagerCompat mUserManager;
+    private final DeepShortcutManager mShortcutManager;
+    private final PackageInstallerCompat mPackageInstaller;
+    private final AppWidgetManagerCompat mAppWidgetManager;
+    private final IconCache mIconCache;
+
+    private boolean mStopped;
+
+    public LoaderTask(LauncherAppState app, AllAppsList bgAllAppsList, BgDataModel dataModel,
+            LoaderResults results) {
+        mApp = app;
+        mBgAllAppsList = bgAllAppsList;
+        mBgDataModel = dataModel;
+        mResults = results;
+
+        mLauncherApps = LauncherAppsCompat.getInstance(mApp.getContext());
+        mUserManager = UserManagerCompat.getInstance(mApp.getContext());
+        mShortcutManager = DeepShortcutManager.getInstance(mApp.getContext());
+        mPackageInstaller = PackageInstallerCompat.getInstance(mApp.getContext());
+        mAppWidgetManager = AppWidgetManagerCompat.getInstance(mApp.getContext());
+        mIconCache = mApp.getIconCache();
+    }
+
+    private synchronized void waitForIdle() {
+        // Wait until the either we're stopped or the other threads are done.
+        // This way we don't start loading all apps until the workspace has settled
+        // down.
+        LooperIdleLock idleLock = new LooperIdleLock(this, Looper.getMainLooper());
+        // Just in case mFlushingWorkerThread changes but we aren't woken up,
+        // wait no longer than 1sec at a time
+        while (!mStopped && idleLock.awaitLocked(1000));
+    }
+
+    private synchronized void verifyNotStopped() throws CancellationException {
+        if (mStopped) {
+            throw new CancellationException("Loader stopped");
+        }
+    }
+
+    public void run() {
+        synchronized (this) {
+            // Skip fast if we are already stopped.
+            if (mStopped) {
+                return;
+            }
+        }
+
+        try (LauncherModel.LoaderTransaction transaction = mApp.getModel().beginLoader(this)) {
+            long now = 0;
+            if (DEBUG_LOADERS) Log.d(TAG, "step 1.1: loading workspace");
+            loadWorkspace();
+
+            verifyNotStopped();
+            if (DEBUG_LOADERS) Log.d(TAG, "step 1.2: bind workspace workspace");
+            mResults.bindWorkspace();
+
+            // Take a break
+            if (DEBUG_LOADERS) {
+                Log.d(TAG, "step 1 completed, wait for idle");
+                now = SystemClock.uptimeMillis();
+            }
+            waitForIdle();
+            if (DEBUG_LOADERS) Log.d(TAG, "Waited " + (SystemClock.uptimeMillis() - now) + "ms");
+            verifyNotStopped();
+
+            // second step
+            if (DEBUG_LOADERS) Log.d(TAG, "step 2.1: loading all apps");
+            loadAllApps();
+
+            if (DEBUG_LOADERS) Log.d(TAG, "step 2.2: Binding all apps");
+            verifyNotStopped();
+            mResults.bindAllApps();
+
+            verifyNotStopped();
+            if (DEBUG_LOADERS) Log.d(TAG, "step 2.3: Update icon cache");
+            updateIconCache();
+
+            // Take a break
+            if (DEBUG_LOADERS) {
+                Log.d(TAG, "step 2 completed, wait for idle");
+                now = SystemClock.uptimeMillis();
+            }
+            waitForIdle();
+            if (DEBUG_LOADERS) Log.d(TAG, "Waited " + (SystemClock.uptimeMillis() - now) + "ms");
+            verifyNotStopped();
+
+            // third step
+            if (DEBUG_LOADERS) Log.d(TAG, "step 3.1: loading deep shortcuts");
+            loadDeepShortcuts();
+
+            verifyNotStopped();
+            if (DEBUG_LOADERS) Log.d(TAG, "step 3.2: bind deep shortcuts");
+            mResults.bindDeepShortcuts();
+
+            // Take a break
+            if (DEBUG_LOADERS) Log.d(TAG, "step 3 completed, wait for idle");
+            waitForIdle();
+            verifyNotStopped();
+
+            // fourth step
+            if (DEBUG_LOADERS) Log.d(TAG, "step 4.1: loading widgets");
+            mBgDataModel.widgetsModel.update(mApp, null);
+
+            verifyNotStopped();
+            if (DEBUG_LOADERS) Log.d(TAG, "step 4.2: Binding widgets");
+            mResults.bindWidgets();
+
+            transaction.commit();
+        } catch (CancellationException e) {
+          // Loader stopped, ignore
+        }
+    }
+
+    public synchronized void stopLocked() {
+        mStopped = true;
+        this.notify();
+    }
+
+    private void loadWorkspace() {
+        if (LauncherAppState.PROFILE_STARTUP) {
+            Trace.beginSection("Loading Workspace");
+        }
+
+        final Context context = mApp.getContext();
+        final ContentResolver contentResolver = context.getContentResolver();
+        final PackageManagerHelper pmHelper = new PackageManagerHelper(context);
+        final boolean isSafeMode = pmHelper.isSafeMode();
+        final boolean isSdCardReady = Utilities.isBootCompleted();
+        final MultiHashMap<UserHandle, String> pendingPackages = new MultiHashMap<>();
+
+        boolean clearDb = false;
+        try {
+            ImportDataTask.performImportIfPossible(context);
+        } catch (Exception e) {
+            // Migration failed. Clear workspace.
+            clearDb = true;
+        }
+
+        if (!clearDb && GridSizeMigrationTask.ENABLED &&
+                !GridSizeMigrationTask.migrateGridIfNeeded(context)) {
+            // Migration failed. Clear workspace.
+            clearDb = true;
+        }
+
+        if (clearDb) {
+            Log.d(TAG, "loadWorkspace: resetting launcher database");
+            LauncherSettings.Settings.call(contentResolver,
+                    LauncherSettings.Settings.METHOD_CREATE_EMPTY_DB);
+        }
+
+        Log.d(TAG, "loadWorkspace: loading default favorites");
+        LauncherSettings.Settings.call(contentResolver,
+                LauncherSettings.Settings.METHOD_LOAD_DEFAULT_FAVORITES);
+
+        synchronized (mBgDataModel) {
+            mBgDataModel.clear();
+
+            final HashMap<String, Integer> installingPkgs =
+                    mPackageInstaller.updateAndGetActiveSessionCache();
+            mBgDataModel.workspaceScreens.addAll(LauncherModel.loadWorkspaceScreensDb(context));
+
+            Map<ShortcutKey, ShortcutInfoCompat> shortcutKeyToPinnedShortcuts = new HashMap<>();
+            final LoaderCursor c = new LoaderCursor(contentResolver.query(
+                    LauncherSettings.Favorites.CONTENT_URI, null, null, null, null), mApp);
+
+            HashMap<ComponentKey, AppWidgetProviderInfo> widgetProvidersMap = null;
+
+            try {
+                final int appWidgetIdIndex = c.getColumnIndexOrThrow(
+                        LauncherSettings.Favorites.APPWIDGET_ID);
+                final int appWidgetProviderIndex = c.getColumnIndexOrThrow(
+                        LauncherSettings.Favorites.APPWIDGET_PROVIDER);
+                final int spanXIndex = c.getColumnIndexOrThrow
+                        (LauncherSettings.Favorites.SPANX);
+                final int spanYIndex = c.getColumnIndexOrThrow(
+                        LauncherSettings.Favorites.SPANY);
+                final int rankIndex = c.getColumnIndexOrThrow(
+                        LauncherSettings.Favorites.RANK);
+                final int optionsIndex = c.getColumnIndexOrThrow(
+                        LauncherSettings.Favorites.OPTIONS);
+
+                final LongSparseArray<UserHandle> allUsers = c.allUsers;
+                final LongSparseArray<Boolean> quietMode = new LongSparseArray<>();
+                final LongSparseArray<Boolean> unlockedUsers = new LongSparseArray<>();
+                for (UserHandle user : mUserManager.getUserProfiles()) {
+                    long serialNo = mUserManager.getSerialNumberForUser(user);
+                    allUsers.put(serialNo, user);
+                    quietMode.put(serialNo, mUserManager.isQuietModeEnabled(user));
+
+                    boolean userUnlocked = mUserManager.isUserUnlocked(user);
+
+                    // We can only query for shortcuts when the user is unlocked.
+                    if (userUnlocked) {
+                        List<ShortcutInfoCompat> pinnedShortcuts =
+                                mShortcutManager.queryForPinnedShortcuts(null, user);
+                        if (mShortcutManager.wasLastCallSuccess()) {
+                            for (ShortcutInfoCompat shortcut : pinnedShortcuts) {
+                                shortcutKeyToPinnedShortcuts.put(ShortcutKey.fromInfo(shortcut),
+                                        shortcut);
+                            }
+                        } else {
+                            // Shortcut manager can fail due to some race condition when the
+                            // lock state changes too frequently. For the purpose of the loading
+                            // shortcuts, consider the user is still locked.
+                            userUnlocked = false;
+                        }
+                    }
+                    unlockedUsers.put(serialNo, userUnlocked);
+                }
+
+                ShortcutInfo info;
+                LauncherAppWidgetInfo appWidgetInfo;
+                Intent intent;
+                String targetPkg;
+
+                FolderIconPreviewVerifier verifier =
+                        new FolderIconPreviewVerifier(mApp.getInvariantDeviceProfile());
+                while (!mStopped && c.moveToNext()) {
+                    try {
+                        if (c.user == null) {
+                            // User has been deleted, remove the item.
+                            c.markDeleted("User has been deleted");
+                            continue;
+                        }
+
+                        boolean allowMissingTarget = false;
+                        switch (c.itemType) {
+                        case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
+                        case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
+                        case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT:
+                            intent = c.parseIntent();
+                            if (intent == null) {
+                                c.markDeleted("Invalid or null intent");
+                                continue;
+                            }
+
+                            int disabledState = quietMode.get(c.serialNumber) ?
+                                    ShortcutInfo.FLAG_DISABLED_QUIET_USER : 0;
+                            ComponentName cn = intent.getComponent();
+                            targetPkg = cn == null ? intent.getPackage() : cn.getPackageName();
+
+                            if (!Process.myUserHandle().equals(c.user)) {
+                                if (c.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) {
+                                    c.markDeleted("Legacy shortcuts are only allowed for default user");
+                                    continue;
+                                } else if (c.restoreFlag != 0) {
+                                    // Don't restore items for other profiles.
+                                    c.markDeleted("Restore from managed profile not supported");
+                                    continue;
+                                }
+                            }
+                            if (TextUtils.isEmpty(targetPkg) &&
+                                    c.itemType != LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) {
+                                c.markDeleted("Only legacy shortcuts can have null package");
+                                continue;
+                            }
+
+                            // If there is no target package, its an implicit intent
+                            // (legacy shortcut) which is always valid
+                            boolean validTarget = TextUtils.isEmpty(targetPkg) ||
+                                    mLauncherApps.isPackageEnabledForProfile(targetPkg, c.user);
+
+                            if (cn != null && validTarget) {
+                                // If the apk is present and the shortcut points to a specific
+                                // component.
+
+                                // If the component is already present
+                                if (mLauncherApps.isActivityEnabledForProfile(cn, c.user)) {
+                                    // no special handling necessary for this item
+                                    c.markRestored();
+                                } else {
+                                    if (c.hasRestoreFlag(ShortcutInfo.FLAG_AUTOINSTALL_ICON)) {
+                                        // We allow auto install apps to have their intent
+                                        // updated after an install.
+                                        intent = pmHelper.getAppLaunchIntent(targetPkg, c.user);
+                                        if (intent != null) {
+                                            c.restoreFlag = 0;
+                                            c.updater().put(
+                                                    LauncherSettings.Favorites.INTENT,
+                                                    intent.toUri(0)).commit();
+                                            cn = intent.getComponent();
+                                        } else {
+                                            c.markDeleted("Unable to find a launch target");
+                                            continue;
+                                        }
+                                    } else {
+                                        // The app is installed but the component is no
+                                        // longer available.
+                                        c.markDeleted("Invalid component removed: " + cn);
+                                        continue;
+                                    }
+                                }
+                            }
+                            // else if cn == null => can't infer much, leave it
+                            // else if !validPkg => could be restored icon or missing sd-card
+
+                            if (!TextUtils.isEmpty(targetPkg) && !validTarget) {
+                                // Points to a valid app (superset of cn != null) but the apk
+                                // is not available.
+
+                                if (c.restoreFlag != 0) {
+                                    // Package is not yet available but might be
+                                    // installed later.
+                                    FileLog.d(TAG, "package not yet restored: " + targetPkg);
+
+                                    if (c.hasRestoreFlag(ShortcutInfo.FLAG_RESTORE_STARTED)) {
+                                        // Restore has started once.
+                                    } else if (installingPkgs.containsKey(targetPkg)) {
+                                        // App restore has started. Update the flag
+                                        c.restoreFlag |= ShortcutInfo.FLAG_RESTORE_STARTED;
+                                        c.updater().commit();
+                                    } else {
+                                        c.markDeleted("Unrestored app removed: " + targetPkg);
+                                        continue;
+                                    }
+                                } else if (pmHelper.isAppOnSdcard(targetPkg, c.user)) {
+                                    // Package is present but not available.
+                                    disabledState |= ShortcutInfo.FLAG_DISABLED_NOT_AVAILABLE;
+                                    // Add the icon on the workspace anyway.
+                                    allowMissingTarget = true;
+                                } else if (!isSdCardReady) {
+                                    // SdCard is not ready yet. Package might get available,
+                                    // once it is ready.
+                                    Log.d(TAG, "Missing pkg, will check later: " + targetPkg);
+                                    pendingPackages.addToList(c.user, targetPkg);
+                                    // Add the icon on the workspace anyway.
+                                    allowMissingTarget = true;
+                                } else {
+                                    // Do not wait for external media load anymore.
+                                    c.markDeleted("Invalid package removed: " + targetPkg);
+                                    continue;
+                                }
+                            }
+
+                            if (validTarget) {
+                                // The shortcut points to a valid target (either no target
+                                // or something which is ready to be used)
+                                c.markRestored();
+                            }
+
+                            boolean useLowResIcon = !c.isOnWorkspaceOrHotseat() &&
+                                    !verifier.isItemInPreview(c.getInt(rankIndex));
+
+                            if (c.restoreFlag != 0) {
+                                // Already verified above that user is same as default user
+                                info = c.getRestoredItemInfo(intent);
+                            } else if (c.itemType ==
+                                    LauncherSettings.Favorites.ITEM_TYPE_APPLICATION) {
+                                info = c.getAppShortcutInfo(
+                                        intent, allowMissingTarget, useLowResIcon);
+                            } else if (c.itemType ==
+                                    LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
+
+                                ShortcutKey key = ShortcutKey.fromIntent(intent, c.user);
+                                if (unlockedUsers.get(c.serialNumber)) {
+                                    ShortcutInfoCompat pinnedShortcut =
+                                            shortcutKeyToPinnedShortcuts.get(key);
+                                    if (pinnedShortcut == null) {
+                                        // The shortcut is no longer valid.
+                                        c.markDeleted("Pinned shortcut not found");
+                                        continue;
+                                    }
+                                    info = new ShortcutInfo(pinnedShortcut, context);
+                                    info.iconBitmap = LauncherIcons
+                                            .createShortcutIcon(pinnedShortcut, context);
+                                    if (pmHelper.isAppSuspended(
+                                            pinnedShortcut.getPackage(), info.user)) {
+                                        info.isDisabled |= ShortcutInfo.FLAG_DISABLED_SUSPENDED;
+                                    }
+                                    intent = info.intent;
+                                } else {
+                                    // Create a shortcut info in disabled mode for now.
+                                    info = c.loadSimpleShortcut();
+                                    info.isDisabled |= ShortcutInfo.FLAG_DISABLED_LOCKED_USER;
+                                }
+                            } else { // item type == ITEM_TYPE_SHORTCUT
+                                info = c.loadSimpleShortcut();
+
+                                // Shortcuts are only available on the primary profile
+                                if (!TextUtils.isEmpty(targetPkg)
+                                        && pmHelper.isAppSuspended(targetPkg, c.user)) {
+                                    disabledState |= ShortcutInfo.FLAG_DISABLED_SUSPENDED;
+                                }
+
+                                // App shortcuts that used to be automatically added to Launcher
+                                // didn't always have the correct intent flags set, so do that
+                                // here
+                                if (intent.getAction() != null &&
+                                    intent.getCategories() != null &&
+                                    intent.getAction().equals(Intent.ACTION_MAIN) &&
+                                    intent.getCategories().contains(Intent.CATEGORY_LAUNCHER)) {
+                                    intent.addFlags(
+                                        Intent.FLAG_ACTIVITY_NEW_TASK |
+                                        Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
+                                }
+                            }
+
+                            if (info != null) {
+                                c.applyCommonProperties(info);
+
+                                info.intent = intent;
+                                info.rank = c.getInt(rankIndex);
+                                info.spanX = 1;
+                                info.spanY = 1;
+                                info.isDisabled |= disabledState;
+                                if (isSafeMode && !Utilities.isSystemApp(context, intent)) {
+                                    info.isDisabled |= ShortcutInfo.FLAG_DISABLED_SAFEMODE;
+                                }
+
+                                if (c.restoreFlag != 0 && !TextUtils.isEmpty(targetPkg)) {
+                                    Integer progress = installingPkgs.get(targetPkg);
+                                    if (progress != null) {
+                                        info.setInstallProgress(progress);
+                                    } else {
+                                        info.status &= ~ShortcutInfo.FLAG_INSTALL_SESSION_ACTIVE;
+                                    }
+                                }
+
+                                c.checkAndAddItem(info, mBgDataModel);
+                            } else {
+                                throw new RuntimeException("Unexpected null ShortcutInfo");
+                            }
+                            break;
+
+                        case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
+                            FolderInfo folderInfo = mBgDataModel.findOrMakeFolder(c.id);
+                            c.applyCommonProperties(folderInfo);
+
+                            // Do not trim the folder label, as is was set by the user.
+                            folderInfo.title = c.getString(c.titleIndex);
+                            folderInfo.spanX = 1;
+                            folderInfo.spanY = 1;
+                            folderInfo.options = c.getInt(optionsIndex);
+
+                            // no special handling required for restored folders
+                            c.markRestored();
+
+                            c.checkAndAddItem(folderInfo, mBgDataModel);
+                            break;
+
+                        case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
+                        case LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET:
+                            // Read all Launcher-specific widget details
+                            boolean customWidget = c.itemType ==
+                                LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
+
+                            int appWidgetId = c.getInt(appWidgetIdIndex);
+                            String savedProvider = c.getString(appWidgetProviderIndex);
+
+                            final ComponentName component =
+                                    ComponentName.unflattenFromString(savedProvider);
+
+                            final boolean isIdValid = !c.hasRestoreFlag(
+                                    LauncherAppWidgetInfo.FLAG_ID_NOT_VALID);
+                            final boolean wasProviderReady = !c.hasRestoreFlag(
+                                    LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY);
+
+                            if (widgetProvidersMap == null) {
+                                widgetProvidersMap = mAppWidgetManager.getAllProvidersMap();
+                            }
+                            final AppWidgetProviderInfo provider = widgetProvidersMap.get(
+                                    new ComponentKey(
+                                            ComponentName.unflattenFromString(savedProvider),
+                                            c.user));
+
+                            final boolean isProviderReady = isValidProvider(provider);
+                            if (!isSafeMode && !customWidget &&
+                                    wasProviderReady && !isProviderReady) {
+                                c.markDeleted(
+                                        "Deleting widget that isn't installed anymore: "
+                                        + provider);
+                            } else {
+                                if (isProviderReady) {
+                                    appWidgetInfo = new LauncherAppWidgetInfo(appWidgetId,
+                                            provider.provider);
+
+                                    // The provider is available. So the widget is either
+                                    // available or not available. We do not need to track
+                                    // any future restore updates.
+                                    int status = c.restoreFlag &
+                                            ~LauncherAppWidgetInfo.FLAG_RESTORE_STARTED;
+                                    if (!wasProviderReady) {
+                                        // If provider was not previously ready, update the
+                                        // status and UI flag.
+
+                                        // Id would be valid only if the widget restore broadcast was received.
+                                        if (isIdValid) {
+                                            status |= LauncherAppWidgetInfo.FLAG_UI_NOT_READY;
+                                        } else {
+                                            status &= ~LauncherAppWidgetInfo
+                                                    .FLAG_PROVIDER_NOT_READY;
+                                        }
+                                    }
+                                    appWidgetInfo.restoreStatus = status;
+                                } else {
+                                    Log.v(TAG, "Widget restore pending id=" + c.id
+                                            + " appWidgetId=" + appWidgetId
+                                            + " status =" + c.restoreFlag);
+                                    appWidgetInfo = new LauncherAppWidgetInfo(appWidgetId,
+                                            component);
+                                    appWidgetInfo.restoreStatus = c.restoreFlag;
+                                    Integer installProgress = installingPkgs.get(component.getPackageName());
+
+                                    if (c.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_RESTORE_STARTED)) {
+                                        // Restore has started once.
+                                    } else if (installProgress != null) {
+                                        // App restore has started. Update the flag
+                                        appWidgetInfo.restoreStatus |=
+                                                LauncherAppWidgetInfo.FLAG_RESTORE_STARTED;
+                                    } else if (!isSafeMode) {
+                                        c.markDeleted("Unrestored widget removed: " + component);
+                                        continue;
+                                    }
+
+                                    appWidgetInfo.installProgress =
+                                            installProgress == null ? 0 : installProgress;
+                                }
+                                if (appWidgetInfo.hasRestoreFlag(
+                                        LauncherAppWidgetInfo.FLAG_DIRECT_CONFIG)) {
+                                    appWidgetInfo.bindOptions = c.parseIntent();
+                                }
+
+                                c.applyCommonProperties(appWidgetInfo);
+                                appWidgetInfo.spanX = c.getInt(spanXIndex);
+                                appWidgetInfo.spanY = c.getInt(spanYIndex);
+                                appWidgetInfo.user = c.user;
+
+                                if (!c.isOnWorkspaceOrHotseat()) {
+                                    c.markDeleted("Widget found where container != " +
+                                            "CONTAINER_DESKTOP nor CONTAINER_HOTSEAT - ignoring!");
+                                    continue;
+                                }
+
+                                if (!customWidget) {
+                                    String providerName =
+                                            appWidgetInfo.providerName.flattenToString();
+                                    if (!providerName.equals(savedProvider) ||
+                                            (appWidgetInfo.restoreStatus != c.restoreFlag)) {
+                                        c.updater()
+                                                .put(LauncherSettings.Favorites.APPWIDGET_PROVIDER,
+                                                        providerName)
+                                                .put(LauncherSettings.Favorites.RESTORED,
+                                                        appWidgetInfo.restoreStatus)
+                                                .commit();
+                                    }
+                                }
+
+                                if (appWidgetInfo.restoreStatus !=
+                                        LauncherAppWidgetInfo.RESTORE_COMPLETED) {
+                                    String pkg = appWidgetInfo.providerName.getPackageName();
+                                    appWidgetInfo.pendingItemInfo = new PackageItemInfo(pkg);
+                                    appWidgetInfo.pendingItemInfo.user = appWidgetInfo.user;
+                                    mIconCache.getTitleAndIconForApp(
+                                            appWidgetInfo.pendingItemInfo, false);
+                                }
+
+                                c.checkAndAddItem(appWidgetInfo, mBgDataModel);
+                            }
+                            break;
+                        }
+                    } catch (Exception e) {
+                        Log.e(TAG, "Desktop items loading interrupted", e);
+                    }
+                }
+            } finally {
+                Utilities.closeSilently(c);
+            }
+
+            // Break early if we've stopped loading
+            if (mStopped) {
+                mBgDataModel.clear();
+                return;
+            }
+
+            // Remove dead items
+            if (c.commitDeleted()) {
+                // Remove any empty folder
+                ArrayList<Long> deletedFolderIds = (ArrayList<Long>) LauncherSettings.Settings
+                        .call(contentResolver,
+                                LauncherSettings.Settings.METHOD_DELETE_EMPTY_FOLDERS)
+                        .getSerializable(LauncherSettings.Settings.EXTRA_VALUE);
+                for (long folderId : deletedFolderIds) {
+                    mBgDataModel.workspaceItems.remove(mBgDataModel.folders.get(folderId));
+                    mBgDataModel.folders.remove(folderId);
+                    mBgDataModel.itemsIdMap.remove(folderId);
+                }
+
+                // Remove any ghost widgets
+                LauncherSettings.Settings.call(contentResolver,
+                        LauncherSettings.Settings.METHOD_REMOVE_GHOST_WIDGETS);
+            }
+
+            // Unpin shortcuts that don't exist on the workspace.
+            HashSet<ShortcutKey> pendingShortcuts =
+                    InstallShortcutReceiver.getPendingShortcuts(context);
+            for (ShortcutKey key : shortcutKeyToPinnedShortcuts.keySet()) {
+                MutableInt numTimesPinned = mBgDataModel.pinnedShortcutCounts.get(key);
+                if ((numTimesPinned == null || numTimesPinned.value == 0)
+                        && !pendingShortcuts.contains(key)) {
+                    // Shortcut is pinned but doesn't exist on the workspace; unpin it.
+                    mShortcutManager.unpinShortcut(key);
+                }
+            }
+
+            FolderIconPreviewVerifier verifier =
+                    new FolderIconPreviewVerifier(mApp.getInvariantDeviceProfile());
+            // Sort the folder items and make sure all items in the preview are high resolution.
+            for (FolderInfo folder : mBgDataModel.folders) {
+                Collections.sort(folder.contents, Folder.ITEM_POS_COMPARATOR);
+                verifier.setFolderInfo(folder);
+
+                int numItemsInPreview = 0;
+                for (ShortcutInfo info : folder.contents) {
+                    if (info.usingLowResIcon
+                            && info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION
+                            && verifier.isItemInPreview(info.rank)) {
+                        mIconCache.getTitleAndIcon(info, false);
+                        numItemsInPreview++;
+                    }
+
+                    if (numItemsInPreview >= FolderIcon.NUM_ITEMS_IN_PREVIEW) {
+                        break;
+                    }
+                }
+            }
+
+            c.commitRestoredItems();
+            if (!isSdCardReady && !pendingPackages.isEmpty()) {
+                context.registerReceiver(
+                        new SdCardAvailableReceiver(mApp, pendingPackages),
+                        new IntentFilter(Intent.ACTION_BOOT_COMPLETED),
+                        null,
+                        new Handler(LauncherModel.getWorkerLooper()));
+            }
+
+            // Remove any empty screens
+            ArrayList<Long> unusedScreens = new ArrayList<>(mBgDataModel.workspaceScreens);
+            for (ItemInfo item: mBgDataModel.itemsIdMap) {
+                long screenId = item.screenId;
+                if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP &&
+                        unusedScreens.contains(screenId)) {
+                    unusedScreens.remove(screenId);
+                }
+            }
+
+            // If there are any empty screens remove them, and update.
+            if (unusedScreens.size() != 0) {
+                mBgDataModel.workspaceScreens.removeAll(unusedScreens);
+                LauncherModel.updateWorkspaceScreenOrder(context, mBgDataModel.workspaceScreens);
+            }
+        }
+        if (LauncherAppState.PROFILE_STARTUP) {
+            Trace.endSection();
+        }
+    }
+
+    private void updateIconCache() {
+        // Ignore packages which have a promise icon.
+        HashSet<String> packagesToIgnore = new HashSet<>();
+        synchronized (mBgDataModel) {
+            for (ItemInfo info : mBgDataModel.itemsIdMap) {
+                if (info instanceof ShortcutInfo) {
+                    ShortcutInfo si = (ShortcutInfo) info;
+                    if (si.isPromise() && si.getTargetComponent() != null) {
+                        packagesToIgnore.add(si.getTargetComponent().getPackageName());
+                    }
+                } else if (info instanceof LauncherAppWidgetInfo) {
+                    LauncherAppWidgetInfo lawi = (LauncherAppWidgetInfo) info;
+                    if (lawi.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY)) {
+                        packagesToIgnore.add(lawi.providerName.getPackageName());
+                    }
+                }
+            }
+        }
+        mIconCache.updateDbIcons(packagesToIgnore);
+    }
+
+    private void loadAllApps() {
+        final long loadTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
+
+        final List<UserHandle> profiles = mUserManager.getUserProfiles();
+
+        // Clear the list of apps
+        mBgAllAppsList.clear();
+        for (UserHandle user : profiles) {
+            // Query for the set of apps
+            final long qiaTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
+            final List<LauncherActivityInfo> apps = mLauncherApps.getActivityList(null, user);
+            if (DEBUG_LOADERS) {
+                Log.d(TAG, "getActivityList took "
+                        + (SystemClock.uptimeMillis()-qiaTime) + "ms for user " + user);
+                Log.d(TAG, "getActivityList got " + apps.size() + " apps for user " + user);
+            }
+            // Fail if we don't have any apps
+            // TODO: Fix this. Only fail for the current user.
+            if (apps == null || apps.isEmpty()) {
+                return;
+            }
+            boolean quietMode = mUserManager.isQuietModeEnabled(user);
+            // Create the ApplicationInfos
+            for (int i = 0; i < apps.size(); i++) {
+                LauncherActivityInfo app = apps.get(i);
+                // This builds the icon bitmaps.
+                mBgAllAppsList.add(new AppInfo(app, user, quietMode), app);
+            }
+
+            ManagedProfileHeuristic.onAllAppsLoaded(mApp.getContext(), apps, user);
+        }
+
+        if (FeatureFlags.LAUNCHER3_PROMISE_APPS_IN_ALL_APPS) {
+            // get all active sessions and add them to the all apps list
+            for (PackageInstaller.SessionInfo info :
+                    mPackageInstaller.getAllVerifiedSessions()) {
+                mBgAllAppsList.addPromiseApp(mApp.getContext(),
+                        PackageInstallerCompat.PackageInstallInfo.fromInstallingState(info));
+            }
+        }
+
+        mBgAllAppsList.added = new ArrayList<>();
+        if (DEBUG_LOADERS) {
+            Log.d(TAG, "All apps loaded in in "
+                    + (SystemClock.uptimeMillis() - loadTime) + "ms");
+        }
+    }
+
+    private void loadDeepShortcuts() {
+        mBgDataModel.deepShortcutMap.clear();
+        mBgDataModel.hasShortcutHostPermission = mShortcutManager.hasHostPermission();
+        if (mBgDataModel.hasShortcutHostPermission) {
+            for (UserHandle user : mUserManager.getUserProfiles()) {
+                if (mUserManager.isUserUnlocked(user)) {
+                    List<ShortcutInfoCompat> shortcuts =
+                            mShortcutManager.queryForAllShortcuts(user);
+                    mBgDataModel.updateDeepShortcutMap(null, user, shortcuts);
+                }
+            }
+        }
+    }
+
+    public static boolean isValidProvider(AppWidgetProviderInfo provider) {
+        return (provider != null) && (provider.provider != null)
+                && (provider.provider.getPackageName() != null);
+    }
+}