content: 
  /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.lb.launcher;
  
  import android.animation.Animator;
  import android.animation.AnimatorListenerAdapter;
  import android.animation.AnimatorSet;
  import android.animation.ObjectAnimator;
  import android.animation.PropertyValuesHolder;
  import android.animation.TimeInterpolator;
  import android.animation.ValueAnimator;
  import android.annotation.TargetApi;
  import android.app.Activity;
  import android.app.ActivityManager;
  import android.app.ActivityOptions;
  import android.app.AlertDialog;
  import android.app.SearchManager;
  import android.appwidget.AppWidgetHostView;
  import android.appwidget.AppWidgetManager;
  import android.appwidget.AppWidgetProviderInfo;
  import android.content.ActivityNotFoundException;
  import android.content.BroadcastReceiver;
  import android.content.ComponentCallbacks2;
  import android.content.ComponentName;
  import android.content.ContentResolver;
  import android.content.Context;
  import android.content.DialogInterface;
  import android.content.Intent;
  import android.content.IntentFilter;
  import android.content.SharedPreferences;
  import android.content.pm.ActivityInfo;
  import android.content.pm.ApplicationInfo;
  import android.content.pm.PackageManager;
  import android.content.pm.PackageManager.NameNotFoundException;
  import android.content.res.Configuration;
  import android.content.res.Resources;
  import android.database.ContentObserver;
  import android.database.sqlite.SQLiteDatabase;
  import android.graphics.Bitmap;
  import android.graphics.Canvas;
  import android.graphics.Color;
  import android.graphics.PorterDuff;
  import android.graphics.Rect;
  import android.graphics.drawable.Drawable;
  import android.net.Uri;
  import android.os.AsyncTask;
  import android.os.Build;
  import android.os.Bundle;
  import android.os.Environment;
  import android.os.Handler;
  import android.os.Message;
  import android.os.StrictMode;
  import android.os.SystemClock;
  import android.text.Selection;
  import android.text.SpannableStringBuilder;
  import android.text.TextUtils;
  import android.text.method.TextKeyListener;
  import android.util.Log;
  import android.view.Display;
  import android.view.Gravity;
  import android.view.HapticFeedbackConstants;
  import android.view.KeyEvent;
  import android.view.LayoutInflater;
  import android.view.Menu;
  import android.view.MotionEvent;
  import android.view.Surface;
  import android.view.View;
  import android.view.View.OnClickListener;
  import android.view.View.OnLongClickListener;
  import android.view.ViewAnimationUtils;
  import android.view.ViewGroup;
  import android.view.ViewStub;
  import android.view.ViewTreeObserver;
  import android.view.Window;
  import android.view.WindowManager;
  import android.view.accessibility.AccessibilityEvent;
  import android.view.animation.AccelerateInterpolator;
  import android.view.animation.DecelerateInterpolator;
  import android.view.inputmethod.InputMethodManager;
  import android.widget.Advanceable;
  import android.widget.FrameLayout;
  import android.widget.ImageView;
  import android.widget.Toast;
  import com.lb.launcher.R;
  import com.lb.launcher.DropTarget.DragObject;
  import com.lb.launcher.PagedView.PageSwitchListener;
  import com.lb.launcher.compat.AppWidgetManagerCompat;
  import com.lb.launcher.compat.LauncherActivityInfoCompat;
  import com.lb.launcher.compat.LauncherAppsCompat;
  import com.lb.launcher.compat.PackageInstallerCompat;
  import com.lb.launcher.compat.UserHandleCompat;
  import com.lb.launcher.compat.UserManagerCompat;
  import com.lb.launcher.compat.PackageInstallerCompat.PackageInstallInfo;
  import java.io.DataInputStream;
  import java.io.DataOutputStream;
  import java.io.File;
  import java.io.FileDescriptor;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.PrintWriter;
  import java.lang.reflect.Field;
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.text.DateFormat;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.concurrent.atomic.AtomicInteger;
  
  /**
   * Default launcher application.
   */
  public class Launcher extends Activity
          implements View.OnClickListener, OnLongClickListener, LauncherModel.Callbacks,
                     View.OnTouchListener, PageSwitchListener, LauncherProviderChangeListener {
      static final String TAG = "Launcher";
      static final boolean LOGD = false;
  
      static final boolean PROFILE_STARTUP = false;
      static final boolean DEBUG_WIDGETS = false;
      static final boolean DEBUG_STRICT_MODE = false;
      static final boolean DEBUG_RESUME_TIME = false;
      static final boolean DEBUG_DUMP_LOG = false;
  
      static final boolean ENABLE_DEBUG_INTENTS = false; // allow DebugIntents to run
  
      private static final int REQUEST_CREATE_SHORTCUT = 1;
      private static final int REQUEST_CREATE_APPWIDGET = 5;
      private static final int REQUEST_PICK_SHORTCUT = 7;
      private static final int REQUEST_PICK_APPWIDGET = 9;
      private static final int REQUEST_PICK_WALLPAPER = 10;
  
      private static final int REQUEST_BIND_APPWIDGET = 11;
      private static final int REQUEST_RECONFIGURE_APPWIDGET = 12;
  
      /**
       * IntentStarter uses request codes starting with this. This must be greater than all activity
       * request codes used internally.
       */
      protected static final int REQUEST_LAST = 100;
  
      static final String EXTRA_SHORTCUT_DUPLICATE = "duplicate";
  
      static final int SCREEN_COUNT = 5;
      static final int DEFAULT_SCREEN = 2;
  
      // To turn on these properties, type
      // adb shell setprop log.tag.PROPERTY_NAME [VERBOSE | SUPPRESS]
      static final String DUMP_STATE_PROPERTY = "launcher_dump_state";
      static final String DISABLE_ALL_APPS_PROPERTY = "launcher_noallapps";
  
      // The Intent extra that defines whether to ignore the launch animation
      static final String INTENT_EXTRA_IGNORE_LAUNCH_ANIMATION =
              "com.lb.launcher.intent.extra.shortcut.INGORE_LAUNCH_ANIMATION";
  
      // Type: int
      private static final String RUNTIME_STATE_CURRENT_SCREEN = "launcher.current_screen";
      // Type: int
      private static final String RUNTIME_STATE = "launcher.state";
      // Type: int
      private static final String RUNTIME_STATE_PENDING_ADD_CONTAINER = "launcher.add_container";
      // Type: int
      private static final String RUNTIME_STATE_PENDING_ADD_SCREEN = "launcher.add_screen";
      // Type: int
      private static final String RUNTIME_STATE_PENDING_ADD_CELL_X = "launcher.add_cell_x";
      // Type: int
      private static final String RUNTIME_STATE_PENDING_ADD_CELL_Y = "launcher.add_cell_y";
      // Type: boolean
      private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME = "launcher.rename_folder";
      // Type: long
      private static final String RUNTIME_STATE_PENDING_FOLDER_RENAME_ID = "launcher.rename_folder_id";
      // Type: int
      private static final String RUNTIME_STATE_PENDING_ADD_SPAN_X = "launcher.add_span_x";
      // Type: int
      private static final String RUNTIME_STATE_PENDING_ADD_SPAN_Y = "launcher.add_span_y";
      // Type: parcelable
      private static final String RUNTIME_STATE_PENDING_ADD_WIDGET_INFO = "launcher.add_widget_info";
      // Type: parcelable
      private static final String RUNTIME_STATE_PENDING_ADD_WIDGET_ID = "launcher.add_widget_id";
      // Type: int[]
      private static final String RUNTIME_STATE_VIEW_IDS = "launcher.view_ids";
  
      static final String INTRO_SCREEN_DISMISSED = "launcher.intro_screen_dismissed";
      static final String FIRST_RUN_ACTIVITY_DISPLAYED = "launcher.first_run_activity_displayed";
  
      static final String FIRST_LOAD_COMPLETE = "launcher.first_load_complete";
      static final String ACTION_FIRST_LOAD_COMPLETE =
              "com.lb.launcher.action.FIRST_LOAD_COMPLETE";
  
      public static final String SHOW_WEIGHT_WATCHER = "debug.show_mem";
      public static final boolean SHOW_WEIGHT_WATCHER_DEFAULT = false;
  
      private static final String QSB_WIDGET_ID = "qsb_widget_id";
      private static final String QSB_WIDGET_PROVIDER = "qsb_widget_provider";
  
      public static final String USER_HAS_MIGRATED = "launcher.user_migrated_from_old_data";
  
      /** The different states that Launcher can be in. */
      private enum State { NONE, WORKSPACE, APPS_CUSTOMIZE, APPS_CUSTOMIZE_SPRING_LOADED };
      private State mState = State.WORKSPACE;
      private AnimatorSet mStateAnimation;
  
      private boolean mIsSafeModeEnabled;
  
      LauncherOverlayCallbacks mLauncherOverlayCallbacks = new LauncherOverlayCallbacksImpl();
      LauncherOverlay mLauncherOverlay;
      InsettableFrameLayout mLauncherOverlayContainer;
  
      static final int APPWIDGET_HOST_ID = 1024;
      public static final int EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT = 300;
      private static final int ON_ACTIVITY_RESULT_ANIMATION_DELAY = 500;
      private static final int ACTIVITY_START_DELAY = 1000;
  
      private static final Object sLock = new Object();
      private static int sScreen = DEFAULT_SCREEN;
  
      private HashMap<Integer, Integer> mItemIdToViewId = new HashMap<Integer, Integer>();
      private static final AtomicInteger sNextGeneratedId = new AtomicInteger(1);
  
      // How long to wait before the new-shortcut animation automatically pans the workspace
      private static int NEW_APPS_PAGE_MOVE_DELAY = 500;
      private static int NEW_APPS_ANIMATION_INACTIVE_TIMEOUT_SECONDS = 5;
      private static int NEW_APPS_ANIMATION_DELAY = 500;
      private static final int SINGLE_FRAME_DELAY = 16;
  
      private final BroadcastReceiver mCloseSystemDialogsReceiver
              = new CloseSystemDialogsIntentReceiver();
      private final ContentObserver mWidgetObserver = new AppWidgetResetObserver();
  
      private LayoutInflater mInflater;
  
      private Workspace mWorkspace;
      private View mLauncherView;
      private View mPageIndicators;
      private DragLayer mDragLayer;
      private DragController mDragController;
      private View mWeightWatcher;
  
      private AppWidgetManagerCompat mAppWidgetManager;
      private LauncherAppWidgetHost mAppWidgetHost;
  
      private ItemInfo mPendingAddInfo = new ItemInfo();
      private AppWidgetProviderInfo mPendingAddWidgetInfo;
      private int mPendingAddWidgetId = -1;
  
      private int[] mTmpAddItemCellCoordinates = new int[2];
  
      private FolderInfo mFolderInfo;
  
      private Hotseat mHotseat;
      private ViewGroup mOverviewPanel;
  
      private View mAllAppsButton;
  
      private SearchDropTargetBar mSearchDropTargetBar;
      private AppsCustomizeTabHost mAppsCustomizeTabHost;
      private AppsCustomizePagedView mAppsCustomizeContent;
      private boolean mAutoAdvanceRunning = false;
      private AppWidgetHostView mQsb;
  
      private Bundle mSavedState;
      // We set the state in both onCreate and then onNewIntent in some cases, which causes both
      // scroll issues (because the workspace may not have been measured yet) and extra work.
      // Instead, just save the state that we need to restore Launcher to, and commit it in onResume.
      private State mOnResumeState = State.NONE;
  
      private SpannableStringBuilder mDefaultKeySsb = null;
  
      private boolean mWorkspaceLoading = true;
  
      private boolean mPaused = true;
      private boolean mRestoring;
      private boolean mWaitingForResult;
      private boolean mOnResumeNeedsLoad;
  
      private ArrayList<Runnable> mBindOnResumeCallbacks = new ArrayList<Runnable>();
      private ArrayList<Runnable> mOnResumeCallbacks = new ArrayList<Runnable>();
  
      private Bundle mSavedInstanceState;
  
      private LauncherModel mModel;
      private IconCache mIconCache;
      private boolean mUserPresent = true;
      private boolean mVisible = false;
      private boolean mHasFocus = false;
      private boolean mAttached = false;
  
      private static LocaleConfiguration sLocaleConfiguration = null;
  
      private static HashMap<Long, FolderInfo> sFolders = new HashMap<Long, FolderInfo>();
  
      private View.OnTouchListener mHapticFeedbackTouchListener;
  
      // Related to the auto-advancing of widgets
      private final int ADVANCE_MSG = 1;
      private final int mAdvanceInterval = 20000;
      private final int mAdvanceStagger = 250;
      private long mAutoAdvanceSentTime;
      private long mAutoAdvanceTimeLeft = -1;
      private HashMap<View, AppWidgetProviderInfo> mWidgetsToAdvance =
          new HashMap<View, AppWidgetProviderInfo>();
  
      // Determines how long to wait after a rotation before restoring the screen orientation to
      // match the sensor state.
      private final int mRestoreScreenOrientationDelay = 500;
  
      private Drawable mWorkspaceBackgroundDrawable;
  
      private final ArrayList<Integer> mSynchronouslyBoundPages = new ArrayList<Integer>();
      private static final boolean DISABLE_SYNCHRONOUS_BINDING_CURRENT_PAGE = false;
  
      static final ArrayList<String> sDumpLogs = new ArrayList<String>();
      static Date sDateStamp = new Date();
      static DateFormat sDateFormat =
              DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT);
      static long sRunStart = System.currentTimeMillis();
      static final String CORRUPTION_EMAIL_SENT_KEY = "corruptionEmailSent";
  
      // We only want to get the SharedPreferences once since it does an FS stat each time we get
      // it from the context.
      private SharedPreferences mSharedPrefs;
  
      private static ArrayList<ComponentName> mIntentsOnWorkspaceFromUpgradePath = null;
  
      // Holds the page that we need to animate to, and the icon views that we need to animate up
      // when we scroll to that page on resume.
      private ImageView mFolderIconImageView;
      private Bitmap mFolderIconBitmap;
      private Canvas mFolderIconCanvas;
      private Rect mRectForFolderAnimation = new Rect();
  
      private BubbleTextView mWaitingForResume;
  
      private Runnable mBuildLayersRunnable = new Runnable() {
          public void run() {
              if (mWorkspace != null) {
                  mWorkspace.buildPageHardwareLayers();
              }
          }
      };
  
      private static PendingAddArguments sPendingAddItem;
  
      private static class PendingAddArguments {
          int requestCode;
          Intent intent;
          long container;
          long screenId;
          int cellX;
          int cellY;
          int appWidgetId;
      }
  
      private Stats mStats;
  
      FocusIndicatorView mFocusHandler;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          if (DEBUG_STRICT_MODE) {
              StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                      .detectDiskReads()
                      .detectDiskWrites()
                      .detectNetwork()   // or .detectAll() for all detectable problems
                      .penaltyLog()
                      .build());
              StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                      .detectLeakedSqlLiteObjects()
                      .detectLeakedClosableObjects()
                      .penaltyLog()
                      .penaltyDeath()
                      .build());
          }
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.preOnCreate();
          }
  
          super.onCreate(savedInstanceState);
  
          LauncherAppState.setApplicationContext(getApplicationContext());
          LauncherAppState app = LauncherAppState.getInstance();
          LauncherAppState.getLauncherProvider().setLauncherProviderChangeListener(this);
  
          // Lazy-initialize the dynamic grid
          DeviceProfile grid = app.initDynamicGrid(this);
  
          // the LauncherApplication should call this, but in case of Instrumentation it might not be present yet
          mSharedPrefs = getSharedPreferences(LauncherAppState.getSharedPreferencesKey(),
                  Context.MODE_PRIVATE);
          mIsSafeModeEnabled = getPackageManager().isSafeMode();
          mModel = app.setLauncher(this);
          mIconCache = app.getIconCache();
          mIconCache.flushInvalidIcons(grid);
          mDragController = new DragController(this);
          mInflater = getLayoutInflater();
  
          mStats = new Stats(this);
  
          mAppWidgetManager = AppWidgetManagerCompat.getInstance(this);
  
          mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
          mAppWidgetHost.startListening();
  
          // If we are getting an onCreate, we can actually preempt onResume and unset mPaused here,
          // this also ensures that any synchronous binding below doesn't re-trigger another
          // LauncherModel load.
          mPaused = false;
  
          if (PROFILE_STARTUP) {
              android.os.Debug.startMethodTracing(
                      Environment.getExternalStorageDirectory() + "/launcher");
          }
  
          checkForLocaleChange();
          setContentView(R.layout.launcher);
  
          setupViews();
          grid.layout(this);
  
          registerContentObservers();
  
          lockAllApps();
  
          mSavedState = savedInstanceState;
          restoreState(mSavedState);
  
          if (PROFILE_STARTUP) {
              android.os.Debug.stopMethodTracing();
          }
  
          if (!mRestoring) {
              if (DISABLE_SYNCHRONOUS_BINDING_CURRENT_PAGE) {
                  // If the user leaves launcher, then we should just load items asynchronously when
                  // they return.
                  mModel.startLoader(true, PagedView.INVALID_RESTORE_PAGE);
              } else {
                  // We only load the page synchronously if the user rotates (or triggers a
                  // configuration change) while launcher is in the foreground
                  mModel.startLoader(true, mWorkspace.getRestorePage());
              }
          }
  
          // For handling default keys
          mDefaultKeySsb = new SpannableStringBuilder();
          Selection.setSelection(mDefaultKeySsb, 0);
  
          IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
          registerReceiver(mCloseSystemDialogsReceiver, filter);
  
          // On large interfaces, we want the screen to auto-rotate based on the current orientation
          unlockScreenOrientation(true);
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onCreate(savedInstanceState);
              if (mLauncherCallbacks.hasLauncherOverlay()) {
                  ViewStub stub = (ViewStub) findViewById(R.id.launcher_overlay_stub);
                  mLauncherOverlayContainer = (InsettableFrameLayout) stub.inflate();
                  mLauncherOverlay = mLauncherCallbacks.setLauncherOverlayView(
                          mLauncherOverlayContainer, mLauncherOverlayCallbacks);
                  mWorkspace.setLauncherOverlay(mLauncherOverlay);
              }
          }
  
          if (shouldShowIntroScreen()) {
              showIntroScreen();
          } else {
              showFirstRunActivity();
              showFirstRunClings();
          }
      }
  
      private LauncherCallbacks mLauncherCallbacks;
  
      public void onPostCreate(Bundle savedInstanceState) {
          super.onPostCreate(savedInstanceState);
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onPostCreate(savedInstanceState);
          }
      }
  
      public boolean setLauncherCallbacks(LauncherCallbacks callbacks) {
          mLauncherCallbacks = callbacks;
          return true;
      }
  
      @Override
      public void onLauncherProviderChange() {
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onLauncherProviderChange();
          }
      }
  
      /** To be overridden by subclasses to hint to Launcher that we have custom content */
      protected boolean hasCustomContentToLeft() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.hasCustomContentToLeft();
          }
          return false;
      }
  
      /**
       * To be overridden by subclasses to populate the custom content container and call
       * {@link #addToCustomContentPage}. This will only be invoked if
       * {@link #hasCustomContentToLeft()} is {@code true}.
       */
      protected void populateCustomContentContainer() {
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.populateCustomContentContainer();
          }
      }
  
      /**
       * Invoked by subclasses to signal a change to the {@link #addCustomContentToLeft} value to
       * ensure the custom content page is added or removed if necessary.
       */
      protected void invalidateHasCustomContentToLeft() {
          if (mWorkspace == null || mWorkspace.getScreenOrder().isEmpty()) {
              // Not bound yet, wait for bindScreens to be called.
              return;
          }
  
          if (!mWorkspace.hasCustomContent() && hasCustomContentToLeft()) {
              // Create the custom content page and call the subclass to populate it.
              mWorkspace.createCustomContentContainer();
              populateCustomContentContainer();
          } else if (mWorkspace.hasCustomContent() && !hasCustomContentToLeft()) {
              mWorkspace.removeCustomContentPage();
          }
      }
  
      private void checkForLocaleChange() {
          if (sLocaleConfiguration == null) {
              new AsyncTask<Void, Void, LocaleConfiguration>() {
                  @Override
                  protected LocaleConfiguration doInBackground(Void... unused) {
                      LocaleConfiguration localeConfiguration = new LocaleConfiguration();
                      readConfiguration(Launcher.this, localeConfiguration);
                      return localeConfiguration;
                  }
  
                  @Override
                  protected void onPostExecute(LocaleConfiguration result) {
                      sLocaleConfiguration = result;
                      checkForLocaleChange();  // recursive, but now with a locale configuration
                  }
              }.execute();
              return;
          }
  
          final Configuration configuration = getResources().getConfiguration();
  
          final String previousLocale = sLocaleConfiguration.locale;
          final String locale = configuration.locale.toString();
  
          final int previousMcc = sLocaleConfiguration.mcc;
          final int mcc = configuration.mcc;
  
          final int previousMnc = sLocaleConfiguration.mnc;
          final int mnc = configuration.mnc;
  
          boolean localeChanged = !locale.equals(previousLocale) || mcc != previousMcc || mnc != previousMnc;
  
          if (localeChanged) {
              sLocaleConfiguration.locale = locale;
              sLocaleConfiguration.mcc = mcc;
              sLocaleConfiguration.mnc = mnc;
  
              mIconCache.flush();
  
              final LocaleConfiguration localeConfiguration = sLocaleConfiguration;
              new AsyncTask<Void, Void, Void>() {
                  public Void doInBackground(Void ... args) {
                      writeConfiguration(Launcher.this, localeConfiguration);
                      return null;
                  }
              }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
          }
      }
  
      private static class LocaleConfiguration {
          public String locale;
          public int mcc = -1;
          public int mnc = -1;
      }
  
      private static void readConfiguration(Context context, LocaleConfiguration configuration) {
          DataInputStream in = null;
          try {
              in = new DataInputStream(context.openFileInput(LauncherFiles.LAUNCHER_PREFERENCES));
              configuration.locale = in.readUTF();
              configuration.mcc = in.readInt();
              configuration.mnc = in.readInt();
          } catch (FileNotFoundException e) {
              // Ignore
          } catch (IOException e) {
              // Ignore
          } finally {
              if (in != null) {
                  try {
                      in.close();
                  } catch (IOException e) {
                      // Ignore
                  }
              }
          }
      }
  
      private static void writeConfiguration(Context context, LocaleConfiguration configuration) {
          DataOutputStream out = null;
          try {
              out = new DataOutputStream(context.openFileOutput(
                      LauncherFiles.LAUNCHER_PREFERENCES, MODE_PRIVATE));
              out.writeUTF(configuration.locale);
              out.writeInt(configuration.mcc);
              out.writeInt(configuration.mnc);
              out.flush();
          } catch (FileNotFoundException e) {
              // Ignore
          } catch (IOException e) {
              //noinspection ResultOfMethodCallIgnored
              context.getFileStreamPath(LauncherFiles.LAUNCHER_PREFERENCES).delete();
          } finally {
              if (out != null) {
                  try {
                      out.close();
                  } catch (IOException e) {
                      // Ignore
                  }
              }
          }
      }
  
      public Stats getStats() {
          return mStats;
      }
  
      public LayoutInflater getInflater() {
          return mInflater;
      }
  
      boolean isDraggingEnabled() {
          // We prevent dragging when we are loading the workspace as it is possible to pick up a view
          // that is subsequently removed from the workspace in startBinding().
          return !mModel.isLoadingWorkspace();
      }
  
      static int getScreen() {
          synchronized (sLock) {
              return sScreen;
          }
      }
  
      static void setScreen(int screen) {
          synchronized (sLock) {
              sScreen = screen;
          }
      }
  
      public static int generateViewId() {
          if (Build.VERSION.SDK_INT >= 17) {
              return View.generateViewId();
          } else {
              // View.generateViewId() is not available. The following fallback logic is a copy
              // of its implementation.
              for (;;) {
                  final int result = sNextGeneratedId.get();
                  // aapt-generated IDs have the high byte nonzero; clamp to the range under that.
                  int newValue = result + 1;
                  if (newValue > 0x00FFFFFF) newValue = 1; // Roll over to 1, not 0.
                  if (sNextGeneratedId.compareAndSet(result, newValue)) {
                      return result;
                  }
              }
          }
      }
  
      public int getViewIdForItem(ItemInfo info) {
          // This cast is safe given the > 2B range for int.
          int itemId = (int) info.id;
          if (mItemIdToViewId.containsKey(itemId)) {
              return mItemIdToViewId.get(itemId);
          }
          int viewId = generateViewId();
          mItemIdToViewId.put(itemId, viewId);
          return viewId;
      }
  
      /**
       * Returns whether we should delay spring loaded mode -- for shortcuts and widgets that have
       * a configuration step, this allows the proper animations to run after other transitions.
       */
      private long completeAdd(PendingAddArguments args) {
          long screenId = args.screenId;
          if (args.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
              // When the screen id represents an actual screen (as opposed to a rank) we make sure
              // that the drop page actually exists.
              screenId = ensurePendingDropLayoutExists(args.screenId);
          }
  
          switch (args.requestCode) {
              case REQUEST_CREATE_SHORTCUT:
                  completeAddShortcut(args.intent, args.container, screenId, args.cellX,
                          args.cellY);
                  break;
              case REQUEST_CREATE_APPWIDGET:
                  completeAddAppWidget(args.appWidgetId, args.container, screenId, null, null);
                  break;
              case REQUEST_RECONFIGURE_APPWIDGET:
                  completeRestoreAppWidget(args.appWidgetId);
                  break;
          }
          // Before adding this resetAddInfo(), after a shortcut was added to a workspace screen,
          // if you turned the screen off and then back while in All Apps, Launcher would not
          // return to the workspace. Clearing mAddInfo.container here fixes this issue
          resetAddInfo();
          return screenId;
      }
  
      private void handleActivityResult(
              final int requestCode, final int resultCode, final Intent data) {
          // Reset the startActivity waiting flag
          setWaitingForResult(false);
          final int pendingAddWidgetId = mPendingAddWidgetId;
          mPendingAddWidgetId = -1;
  
          Runnable exitSpringLoaded = new Runnable() {
              @Override
              public void run() {
                  exitSpringLoadedDragModeDelayed((resultCode != RESULT_CANCELED),
                          EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
              }
          };
  
          if (requestCode == REQUEST_BIND_APPWIDGET) {
              final int appWidgetId = data != null ?
                      data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1) : -1;
              if (resultCode == RESULT_CANCELED) {
                  completeTwoStageWidgetDrop(RESULT_CANCELED, appWidgetId);
                  mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
                          ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
              } else if (resultCode == RESULT_OK) {
                  addAppWidgetImpl(appWidgetId, mPendingAddInfo, null,
                          mPendingAddWidgetInfo, ON_ACTIVITY_RESULT_ANIMATION_DELAY);
              }
              return;
          } else if (requestCode == REQUEST_PICK_WALLPAPER) {
              if (resultCode == RESULT_OK && mWorkspace.isInOverviewMode()) {
                  mWorkspace.exitOverviewMode(false);
              }
              return;
          }
  
          boolean isWidgetDrop = (requestCode == REQUEST_PICK_APPWIDGET ||
                  requestCode == REQUEST_CREATE_APPWIDGET);
  
          final boolean workspaceLocked = isWorkspaceLocked();
          // We have special handling for widgets
          if (isWidgetDrop) {
              final int appWidgetId;
              int widgetId = data != null ? data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1)
                      : -1;
              if (widgetId < 0) {
                  appWidgetId = pendingAddWidgetId;
              } else {
                  appWidgetId = widgetId;
              }
  
              final int result;
              if (appWidgetId < 0 || resultCode == RESULT_CANCELED) {
                  Log.e(TAG, "Error: appWidgetId (EXTRA_APPWIDGET_ID) was not " +
                          "returned from the widget configuration activity.");
                  result = RESULT_CANCELED;
                  completeTwoStageWidgetDrop(result, appWidgetId);
                  final Runnable onComplete = new Runnable() {
                      @Override
                      public void run() {
                          exitSpringLoadedDragModeDelayed(false, 0, null);
                      }
                  };
                  if (workspaceLocked) {
                      // No need to remove the empty screen if we're mid-binding, as the
                      // the bind will not add the empty screen.
                      mWorkspace.postDelayed(onComplete, ON_ACTIVITY_RESULT_ANIMATION_DELAY);
                  } else {
                      mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete,
                              ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
                  }
              } else {
                  if (!workspaceLocked) {
                      if (mPendingAddInfo.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
                          // When the screen id represents an actual screen (as opposed to a rank)
                          // we make sure that the drop page actually exists.
                          mPendingAddInfo.screenId =
                                  ensurePendingDropLayoutExists(mPendingAddInfo.screenId);
                      }
                      final CellLayout dropLayout = mWorkspace.getScreenWithId(mPendingAddInfo.screenId);
  
                      dropLayout.setDropPending(true);
                      final Runnable onComplete = new Runnable() {
                          @Override
                          public void run() {
                              completeTwoStageWidgetDrop(resultCode, appWidgetId);
                              dropLayout.setDropPending(false);
                          }
                      };
                      mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete,
                              ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
                  } else {
                      PendingAddArguments args = preparePendingAddArgs(requestCode, data, appWidgetId,
                              mPendingAddInfo);
                      sPendingAddItem = args;
                  }
              }
              return;
          }
  
          if (requestCode == REQUEST_RECONFIGURE_APPWIDGET) {
              if (resultCode == RESULT_OK) {
                  // Update the widget view.
                  PendingAddArguments args = preparePendingAddArgs(requestCode, data,
                          pendingAddWidgetId, mPendingAddInfo);
                  if (workspaceLocked) {
                      sPendingAddItem = args;
                  } else {
                      completeAdd(args);
                  }
              }
              // Leave the widget in the pending state if the user canceled the configure.
              return;
          }
  
          // The pattern used here is that a user PICKs a specific application,
          // which, depending on the target, might need to CREATE the actual target.
  
          // For example, the user would PICK_SHORTCUT for "Music playlist", and we
          // launch over to the Music app to actually CREATE_SHORTCUT.
          if (resultCode == RESULT_OK && mPendingAddInfo.container != ItemInfo.NO_ID) {
              final PendingAddArguments args = preparePendingAddArgs(requestCode, data, -1,
                      mPendingAddInfo);
              if (isWorkspaceLocked()) {
                  sPendingAddItem = args;
              } else {
                  completeAdd(args);
                  mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
                          ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
              }
          } else if (resultCode == RESULT_CANCELED) {
              mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
                      ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
          }
          mDragLayer.clearAnimatedView();
  
      }
  
      @Override
      protected void onActivityResult(
              final int requestCode, final int resultCode, final Intent data) {
          handleActivityResult(requestCode, resultCode, data);
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onActivityResult(requestCode, resultCode, data);
          }
      }
  
      private PendingAddArguments preparePendingAddArgs(int requestCode, Intent data, int
              appWidgetId, ItemInfo info) {
          PendingAddArguments args = new PendingAddArguments();
          args.requestCode = requestCode;
          args.intent = data;
          args.container = info.container;
          args.screenId = info.screenId;
          args.cellX = info.cellX;
          args.cellY = info.cellY;
          args.appWidgetId = appWidgetId;
          return args;
      }
  
      /**
       * Check to see if a given screen id exists. If not, create it at the end, return the new id.
       *
       * @param screenId the screen id to check
       * @return the new screen, or screenId if it exists
       */
      private long ensurePendingDropLayoutExists(long screenId) {
          CellLayout dropLayout =
                  (CellLayout) mWorkspace.getScreenWithId(screenId);
          if (dropLayout == null) {
              // it's possible that the add screen was removed because it was
              // empty and a re-bind occurred
              mWorkspace.addExtraEmptyScreen();
              return mWorkspace.commitExtraEmptyScreen();
          } else {
              return screenId;
          }
      }
  
      private void completeTwoStageWidgetDrop(final int resultCode, final int appWidgetId) {
          CellLayout cellLayout =
                  (CellLayout) mWorkspace.getScreenWithId(mPendingAddInfo.screenId);
          Runnable onCompleteRunnable = null;
          int animationType = 0;
  
          AppWidgetHostView boundWidget = null;
          if (resultCode == RESULT_OK) {
              animationType = Workspace.COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION;
              final AppWidgetHostView layout = mAppWidgetHost.createView(this, appWidgetId,
                      mPendingAddWidgetInfo);
              boundWidget = layout;
              onCompleteRunnable = new Runnable() {
                  @Override
                  public void run() {
                      completeAddAppWidget(appWidgetId, mPendingAddInfo.container,
                              mPendingAddInfo.screenId, layout, null);
                      exitSpringLoadedDragModeDelayed((resultCode != RESULT_CANCELED),
                              EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
                  }
              };
          } else if (resultCode == RESULT_CANCELED) {
              mAppWidgetHost.deleteAppWidgetId(appWidgetId);
              animationType = Workspace.CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION;
          }
          if (mDragLayer.getAnimatedView() != null) {
              mWorkspace.animateWidgetDrop(mPendingAddInfo, cellLayout,
                      (DragView) mDragLayer.getAnimatedView(), onCompleteRunnable,
                      animationType, boundWidget, true);
          } else if (onCompleteRunnable != null) {
              // The animated view may be null in the case of a rotation during widget configuration
              onCompleteRunnable.run();
          }
      }
  
      @Override
      protected void onStop() {
          super.onStop();
          FirstFrameAnimatorHelper.setIsVisible(false);
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onStop();
          }
      }
  
      @Override
      protected void onStart() {
          super.onStart();
          FirstFrameAnimatorHelper.setIsVisible(true);
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onStart();
          }
      }
  
      @Override
      protected void onResume() {
          long startTime = 0;
          if (DEBUG_RESUME_TIME) {
              startTime = System.currentTimeMillis();
              Log.v(TAG, "Launcher.onResume()");
          }
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.preOnResume();
          }
  
          super.onResume();
  
          // Restore the previous launcher state
          if (mOnResumeState == State.WORKSPACE) {
              showWorkspace(false);
          } else if (mOnResumeState == State.APPS_CUSTOMIZE) {
              showAllApps(false, mAppsCustomizeContent.getContentType(), false);
          }
          mOnResumeState = State.NONE;
  
          // Background was set to gradient in onPause(), restore to black if in all apps.
          setWorkspaceBackground(mState == State.WORKSPACE);
  
          mPaused = false;
          if (mRestoring || mOnResumeNeedsLoad) {
              setWorkspaceLoading(true);
              mModel.startLoader(true, PagedView.INVALID_RESTORE_PAGE);
              mRestoring = false;
              mOnResumeNeedsLoad = false;
          }
          if (mBindOnResumeCallbacks.size() > 0) {
              // We might have postponed some bind calls until onResume (see waitUntilResume) --
              // execute them here
              long startTimeCallbacks = 0;
              if (DEBUG_RESUME_TIME) {
                  startTimeCallbacks = System.currentTimeMillis();
              }
  
              if (mAppsCustomizeContent != null) {
                  mAppsCustomizeContent.setBulkBind(true);
              }
              for (int i = 0; i < mBindOnResumeCallbacks.size(); i++) {
                  mBindOnResumeCallbacks.get(i).run();
              }
              if (mAppsCustomizeContent != null) {
                  mAppsCustomizeContent.setBulkBind(false);
              }
              mBindOnResumeCallbacks.clear();
              if (DEBUG_RESUME_TIME) {
                  Log.d(TAG, "Time spent processing callbacks in onResume: " +
                      (System.currentTimeMillis() - startTimeCallbacks));
              }
          }
          if (mOnResumeCallbacks.size() > 0) {
              for (int i = 0; i < mOnResumeCallbacks.size(); i++) {
                  mOnResumeCallbacks.get(i).run();
              }
              mOnResumeCallbacks.clear();
          }
  
          // Reset the pressed state of icons that were locked in the press state while activities
          // were launching
          if (mWaitingForResume != null) {
              // Resets the previous workspace icon press state
              mWaitingForResume.setStayPressed(false);
          }
  
          // It is possible that widgets can receive updates while launcher is not in the foreground.
          // Consequently, the widgets will be inflated in the orientation of the foreground activity
          // (framework issue). On resuming, we ensure that any widgets are inflated for the current
          // orientation.
          getWorkspace().reinflateWidgetsIfNecessary();
  
          // Process any items that were added while Launcher was away.
          InstallShortcutReceiver.disableAndFlushInstallQueue(this);
  
          if (DEBUG_RESUME_TIME) {
              Log.d(TAG, "Time spent in onResume: " + (System.currentTimeMillis() - startTime));
          }
  
          if (mWorkspace.getCustomContentCallbacks() != null) {
              // If we are resuming and the custom content is the current page, we call onShow().
              // It is also poassible that onShow will instead be called slightly after first layout
              // if PagedView#setRestorePage was set to the custom content page in onCreate().
              if (mWorkspace.isOnOrMovingToCustomContent()) {
                  mWorkspace.getCustomContentCallbacks().onShow(true);
              }
          }
          mWorkspace.updateInteractionForState();
          mWorkspace.onResume();
  
          PackageInstallerCompat.getInstance(this).onResume();
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onResume();
          }
      }
  
      @Override
      protected void onPause() {
          // Ensure that items added to Launcher are queued until Launcher returns
          InstallShortcutReceiver.enableInstallQueue();
          PackageInstallerCompat.getInstance(this).onPause();
  
          super.onPause();
          mPaused = true;
          mDragController.cancelDrag();
          mDragController.resetLastGestureUpTime();
  
          // We call onHide() aggressively. The custom content callbacks should be able to
          // debounce excess onHide calls.
          if (mWorkspace.getCustomContentCallbacks() != null) {
              mWorkspace.getCustomContentCallbacks().onHide();
          }
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onPause();
          }
      }
  
      public interface CustomContentCallbacks {
          // Custom content is completely shown. {@code fromResume} indicates whether this was caused
          // by a onResume or by scrolling otherwise.
          public void onShow(boolean fromResume);
  
          // Custom content is completely hidden
          public void onHide();
  
          // Custom content scroll progress changed. From 0 (not showing) to 1 (fully showing).
          public void onScrollProgressChanged(float progress);
  
          // Indicates whether the user is allowed to scroll away from the custom content.
          boolean isScrollingAllowed();
      }
  
      public interface LauncherOverlay {
  
          /**
           * Touch interaction leading to overscroll has begun
           */
          public void onScrollInteractionBegin();
  
          /**
           * Touch interaction related to overscroll has ended
           */
          public void onScrollInteractionEnd();
  
          /**
           * Scroll progress, between 0 and 100, when the user scrolls beyond the leftmost
           * screen (or in the case of RTL, the rightmost screen).
           */
          public void onScrollChange(int progress, boolean rtl);
  
          /**
           * Screen has stopped scrolling
           */
          public void onScrollSettled();
  
          /**
           * This method can be called by the Launcher in order to force the LauncherOverlay
           * to exit fully immersive mode.
           */
          public void forceExitFullImmersion();
      }
  
      public interface LauncherOverlayCallbacks {
          /**
           * This method indicates whether a call to {@link #enterFullImmersion()} will succeed,
           * however it doesn't modify any state within the launcher.
           */
          public boolean canEnterFullImmersion();
  
          /**
           * Should be called to tell Launcher that the LauncherOverlay will take over interaction,
           * eg. by occupying the full screen and handling all touch events.
           *
           * @return true if Launcher allows the LauncherOverlay to become fully immersive. In this
           *          case, Launcher will modify any necessary state and assumes the overlay is
           *          handling all interaction. If false, the LauncherOverlay should cancel any
           *
           */
          public boolean enterFullImmersion();
  
          /**
           * Must be called when exiting fully immersive mode. Indicates to Launcher that it has
           * full control over UI and state.
           */
          public void exitFullImmersion();
      }
  
      class LauncherOverlayCallbacksImpl implements LauncherOverlayCallbacks {
  
          @Override
          public boolean canEnterFullImmersion() {
              return mState == State.WORKSPACE;
          }
  
          @Override
          public boolean enterFullImmersion() {
              if (mState == State.WORKSPACE) {
                  // When fully immersed, disregard any touches which fall through.
                  mDragLayer.setBlockTouch(true);
                  return true;
              }
              return false;
          }
  
          @Override
          public void exitFullImmersion() {
              mDragLayer.setBlockTouch(false);
          }
      }
  
      protected boolean hasSettings() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.hasSettings();
          }
          return false;
      }
  
  
      public void addToCustomContentPage(View customContent,
              CustomContentCallbacks callbacks, String description) {
          mWorkspace.addToCustomContentPage(customContent, callbacks, description);
      }
  
      // The custom content needs to offset its content to account for the QSB
      public int getTopOffsetForCustomContent() {
          return mWorkspace.getPaddingTop();
      }
  
      @Override
      public Object onRetainNonConfigurationInstance() {
          // Flag the loader to stop early before switching
          if (mModel.isCurrentCallbacks(this)) {
              mModel.stopLoader();
          }
          if (mAppsCustomizeContent != null) {
              mAppsCustomizeContent.surrender();
          }
          return Boolean.TRUE;
      }
  
      // We can't hide the IME if it was forced open.  So don't bother
      @Override
      public void onWindowFocusChanged(boolean hasFocus) {
          super.onWindowFocusChanged(hasFocus);
          mHasFocus = hasFocus;
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onWindowFocusChanged(hasFocus);
          }
      }
  
      private boolean acceptFilter() {
          final InputMethodManager inputManager = (InputMethodManager)
                  getSystemService(Context.INPUT_METHOD_SERVICE);
          return !inputManager.isFullscreenMode();
      }
  
      @Override
      public boolean onKeyDown(int keyCode, KeyEvent event) {
          final int uniChar = event.getUnicodeChar();
          final boolean handled = super.onKeyDown(keyCode, event);
          final boolean isKeyNotWhitespace = uniChar > 0 && !Character.isWhitespace(uniChar);
          if (!handled && acceptFilter() && isKeyNotWhitespace) {
              boolean gotKey = TextKeyListener.getInstance().onKeyDown(mWorkspace, mDefaultKeySsb,
                      keyCode, event);
              if (gotKey && mDefaultKeySsb != null && mDefaultKeySsb.length() > 0) {
                  // something usable has been typed - start a search
                  // the typed text will be retrieved and cleared by
                  // showSearchDialog()
                  // If there are multiple keystrokes before the search dialog takes focus,
                  // onSearchRequested() will be called for every keystroke,
                  // but it is idempotent, so it's fine.
                  return onSearchRequested();
              }
          }
  
          // Eat the long press event so the keyboard doesn't come up.
          if (keyCode == KeyEvent.KEYCODE_MENU && event.isLongPress()) {
              return true;
          }
  
          return handled;
      }
  
      private String getTypedText() {
          return mDefaultKeySsb.toString();
      }
  
      private void clearTypedText() {
          mDefaultKeySsb.clear();
          mDefaultKeySsb.clearSpans();
          Selection.setSelection(mDefaultKeySsb, 0);
      }
  
      /**
       * Given the integer (ordinal) value of a State enum instance, convert it to a variable of type
       * State
       */
      private static State intToState(int stateOrdinal) {
          State state = State.WORKSPACE;
          final State[] stateValues = State.values();
          for (int i = 0; i < stateValues.length; i++) {
              if (stateValues[i].ordinal() == stateOrdinal) {
                  state = stateValues[i];
                  break;
              }
          }
          return state;
      }
  
      /**
       * Restores the previous state, if it exists.
       *
       * @param savedState The previous state.
       */
      @SuppressWarnings("unchecked")
      private void restoreState(Bundle savedState) {
          if (savedState == null) {
              return;
          }
  
          State state = intToState(savedState.getInt(RUNTIME_STATE, State.WORKSPACE.ordinal()));
          if (state == State.APPS_CUSTOMIZE) {
              mOnResumeState = State.APPS_CUSTOMIZE;
          }
  
          int currentScreen = savedState.getInt(RUNTIME_STATE_CURRENT_SCREEN,
                  PagedView.INVALID_RESTORE_PAGE);
          if (currentScreen != PagedView.INVALID_RESTORE_PAGE) {
              mWorkspace.setRestorePage(currentScreen);
          }
  
          final long pendingAddContainer = savedState.getLong(RUNTIME_STATE_PENDING_ADD_CONTAINER, -1);
          final long pendingAddScreen = savedState.getLong(RUNTIME_STATE_PENDING_ADD_SCREEN, -1);
  
          if (pendingAddContainer != ItemInfo.NO_ID && pendingAddScreen > -1) {
              mPendingAddInfo.container = pendingAddContainer;
              mPendingAddInfo.screenId = pendingAddScreen;
              mPendingAddInfo.cellX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_X);
              mPendingAddInfo.cellY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_CELL_Y);
              mPendingAddInfo.spanX = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_X);
              mPendingAddInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
              mPendingAddWidgetInfo = savedState.getParcelable(RUNTIME_STATE_PENDING_ADD_WIDGET_INFO);
              mPendingAddWidgetId = savedState.getInt(RUNTIME_STATE_PENDING_ADD_WIDGET_ID);
              setWaitingForResult(true);
              mRestoring = true;
          }
  
          boolean renameFolder = savedState.getBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, false);
          if (renameFolder) {
              long id = savedState.getLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID);
              mFolderInfo = mModel.getFolderById(this, sFolders, id);
              mRestoring = true;
          }
  
          // Restore the AppsCustomize tab
          if (mAppsCustomizeTabHost != null) {
              String curTab = savedState.getString("apps_customize_currentTab");
              if (curTab != null) {
                  mAppsCustomizeTabHost.setContentTypeImmediate(
                          mAppsCustomizeTabHost.getContentTypeForTabTag(curTab));
                  mAppsCustomizeContent.loadAssociatedPages(
                          mAppsCustomizeContent.getCurrentPage());
              }
  
              int currentIndex = savedState.getInt("apps_customize_currentIndex");
              mAppsCustomizeContent.restorePageForIndex(currentIndex);
          }
          mItemIdToViewId = (HashMap<Integer, Integer>)
                  savedState.getSerializable(RUNTIME_STATE_VIEW_IDS);
      }
  
      /**
       * Finds all the views we need and configure them properly.
       */
      private void setupViews() {
          final DragController dragController = mDragController;
  
          mLauncherView = findViewById(R.id.launcher);
          mFocusHandler = (FocusIndicatorView) findViewById(R.id.focus_indicator);
          mDragLayer = (DragLayer) findViewById(R.id.drag_layer);
          mWorkspace = (Workspace) mDragLayer.findViewById(R.id.workspace);
          mWorkspace.setPageSwitchListener(this);
          mPageIndicators = mDragLayer.findViewById(R.id.page_indicator);
  
          mLauncherView.setSystemUiVisibility(
                  View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
          mWorkspaceBackgroundDrawable = getResources().getDrawable(R.drawable.workspace_bg);
  
          // Setup the drag layer
          mDragLayer.setup(this, dragController);
  
          // Setup the hotseat
          mHotseat = (Hotseat) findViewById(R.id.hotseat);
          if (mHotseat != null) {
              mHotseat.setup(this);
              mHotseat.setOnLongClickListener(this);
          }
  
          mOverviewPanel = (ViewGroup) findViewById(R.id.overview_panel);
          View widgetButton = findViewById(R.id.widget_button);
          widgetButton.setOnClickListener(new OnClickListener() {
              @Override
              public void onClick(View arg0) {
                  if (!mWorkspace.isSwitchingState()) {
                      onClickAddWidgetButton(arg0);
                  }
              }
          });
          widgetButton.setOnTouchListener(getHapticFeedbackTouchListener());
  
          View wallpaperButton = findViewById(R.id.wallpaper_button);
          wallpaperButton.setOnClickListener(new OnClickListener() {
              @Override
              public void onClick(View arg0) {
                  if (!mWorkspace.isSwitchingState()) {
                      onClickWallpaperPicker(arg0);
                  }
              }
          });
          wallpaperButton.setOnTouchListener(getHapticFeedbackTouchListener());
  
          View settingsButton = findViewById(R.id.settings_button);
          if (hasSettings()) {
              settingsButton.setOnClickListener(new OnClickListener() {
                  @Override
                  public void onClick(View arg0) {
                      if (!mWorkspace.isSwitchingState()) {
                          onClickSettingsButton(arg0);
                      }
                  }
              });
              settingsButton.setOnTouchListener(getHapticFeedbackTouchListener());
          } else {
              settingsButton.setVisibility(View.GONE);
          }
  
          mOverviewPanel.setAlpha(0f);
  
          // Setup the workspace
          mWorkspace.setHapticFeedbackEnabled(false);
          mWorkspace.setOnLongClickListener(this);
          mWorkspace.setup(dragController);
          dragController.addDragListener(mWorkspace);
  
          // Get the search/delete bar
          mSearchDropTargetBar = (SearchDropTargetBar)
                  mDragLayer.findViewById(R.id.search_drop_target_bar);
  
          // Setup AppsCustomize
          mAppsCustomizeTabHost = (AppsCustomizeTabHost) findViewById(R.id.apps_customize_pane);
          mAppsCustomizeContent = (AppsCustomizePagedView)
                  mAppsCustomizeTabHost.findViewById(R.id.apps_customize_pane_content);
          mAppsCustomizeContent.setup(this, dragController);
  
          // Setup the drag controller (drop targets have to be added in reverse order in priority)
          dragController.setDragScoller(mWorkspace);
          dragController.setScrollView(mDragLayer);
          dragController.setMoveTarget(mWorkspace);
          dragController.addDropTarget(mWorkspace);
          if (mSearchDropTargetBar != null) {
              mSearchDropTargetBar.setup(this, dragController);
              mSearchDropTargetBar.setQsbSearchBar(getQsbBar());
          }
  
          if (getResources().getBoolean(R.bool.debug_memory_enabled)) {
              Log.v(TAG, "adding WeightWatcher");
              mWeightWatcher = new WeightWatcher(this);
              mWeightWatcher.setAlpha(0.5f);
              ((FrameLayout) mLauncherView).addView(mWeightWatcher,
                      new FrameLayout.LayoutParams(
                              FrameLayout.LayoutParams.MATCH_PARENT,
                              FrameLayout.LayoutParams.WRAP_CONTENT,
                              Gravity.BOTTOM)
              );
  
              boolean show = shouldShowWeightWatcher();
              mWeightWatcher.setVisibility(show ? View.VISIBLE : View.GONE);
          }
      }
  
      /**
       * Sets the all apps button. This method is called from {@link Hotseat}.
       */
      public void setAllAppsButton(View allAppsButton) {
          mAllAppsButton = allAppsButton;
      }
  
      public View getAllAppsButton() {
          return mAllAppsButton;
      }
  
      /**
       * Creates a view representing a shortcut.
       *
       * @param info The data structure describing the shortcut.
       *
       * @return A View inflated from R.layout.application.
       */
      View createShortcut(ShortcutInfo info) {
          return createShortcut(R.layout.application,
                  (ViewGroup) mWorkspace.getChildAt(mWorkspace.getCurrentPage()), info);
      }
  
      /**
       * Creates a view representing a shortcut inflated from the specified resource.
       *
       * @param layoutResId The id of the XML layout used to create the shortcut.
       * @param parent The group the shortcut belongs to.
       * @param info The data structure describing the shortcut.
       *
       * @return A View inflated from layoutResId.
       */
      View createShortcut(int layoutResId, ViewGroup parent, ShortcutInfo info) {
          BubbleTextView favorite = (BubbleTextView) mInflater.inflate(layoutResId, parent, false);
          favorite.applyFromShortcutInfo(info, mIconCache, true);
          favorite.setOnClickListener(this);
          favorite.setOnFocusChangeListener(mFocusHandler);
          return favorite;
      }
  
      /**
       * Add a shortcut to the workspace.
       *
       * @param data The intent describing the shortcut.
       * @param cellInfo The position on screen where to create the shortcut.
       */
      private void completeAddShortcut(Intent data, long container, long screenId, int cellX,
              int cellY) {
          int[] cellXY = mTmpAddItemCellCoordinates;
          int[] touchXY = mPendingAddInfo.dropPos;
          CellLayout layout = getCellLayout(container, screenId);
  
          boolean foundCellSpan = false;
  
          ShortcutInfo info = mModel.infoFromShortcutIntent(this, data);
          if (info == null) {
              return;
          }
          final View view = createShortcut(info);
  
          // First we check if we already know the exact location where we want to add this item.
          if (cellX >= 0 && cellY >= 0) {
              cellXY[0] = cellX;
              cellXY[1] = cellY;
              foundCellSpan = true;
  
              // If appropriate, either create a folder or add to an existing folder
              if (mWorkspace.createUserFolderIfNecessary(view, container, layout, cellXY, 0,
                      true, null,null)) {
                  return;
              }
              DragObject dragObject = new DragObject();
              dragObject.dragInfo = info;
              if (mWorkspace.addToExistingFolderIfNecessary(view, layout, cellXY, 0, dragObject,
                      true)) {
                  return;
              }
          } else if (touchXY != null) {
              // when dragging and dropping, just find the closest free spot
              int[] result = layout.findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, cellXY);
              foundCellSpan = (result != null);
          } else {
              foundCellSpan = layout.findCellForSpan(cellXY, 1, 1);
          }
  
          if (!foundCellSpan) {
              showOutOfSpaceMessage(isHotseatLayout(layout));
              return;
          }
  
          LauncherModel.addItemToDatabase(this, info, container, screenId, cellXY[0], cellXY[1], false);
  
          if (!mRestoring) {
              mWorkspace.addInScreen(view, container, screenId, cellXY[0], cellXY[1], 1, 1,
                      isWorkspaceLocked());
          }
      }
  
      static int[] getSpanForWidget(Context context, ComponentName component, int minWidth,
              int minHeight) {
          Rect padding = AppWidgetHostView.getDefaultPaddingForWidget(context, component, null);
          // We want to account for the extra amount of padding that we are adding to the widget
          // to ensure that it gets the full amount of space that it has requested
          int requiredWidth = minWidth + padding.left + padding.right;
          int requiredHeight = minHeight + padding.top + padding.bottom;
          return CellLayout.rectToCell(requiredWidth, requiredHeight, null);
      }
  
      static int[] getSpanForWidget(Context context, AppWidgetProviderInfo info) {
          return getSpanForWidget(context, info.provider, info.minWidth, info.minHeight);
      }
  
      static int[] getMinSpanForWidget(Context context, AppWidgetProviderInfo info) {
          return getSpanForWidget(context, info.provider, info.minResizeWidth, info.minResizeHeight);
      }
  
      static int[] getSpanForWidget(Context context, PendingAddWidgetInfo info) {
          return getSpanForWidget(context, info.componentName, info.minWidth, info.minHeight);
      }
  
      static int[] getMinSpanForWidget(Context context, PendingAddWidgetInfo info) {
          return getSpanForWidget(context, info.componentName, info.minResizeWidth,
                  info.minResizeHeight);
      }
  
      /**
       * Add a widget to the workspace.
       *
       * @param appWidgetId The app widget id
       * @param cellInfo The position on screen where to create the widget.
       */
      private void completeAddAppWidget(final int appWidgetId, long container, long screenId,
              AppWidgetHostView hostView, AppWidgetProviderInfo appWidgetInfo) {
          if (appWidgetInfo == null) {
              appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
          }
  
          // Calculate the grid spans needed to fit this widget
          CellLayout layout = getCellLayout(container, screenId);
  
          int[] minSpanXY = getMinSpanForWidget(this, appWidgetInfo);
          int[] spanXY = getSpanForWidget(this, appWidgetInfo);
  
          // Try finding open space on Launcher screen
          // We have saved the position to which the widget was dragged-- this really only matters
          // if we are placing widgets on a "spring-loaded" screen
          int[] cellXY = mTmpAddItemCellCoordinates;
          int[] touchXY = mPendingAddInfo.dropPos;
          int[] finalSpan = new int[2];
          boolean foundCellSpan = false;
          if (mPendingAddInfo.cellX >= 0 && mPendingAddInfo.cellY >= 0) {
              cellXY[0] = mPendingAddInfo.cellX;
              cellXY[1] = mPendingAddInfo.cellY;
              spanXY[0] = mPendingAddInfo.spanX;
              spanXY[1] = mPendingAddInfo.spanY;
              foundCellSpan = true;
          } else if (touchXY != null) {
              // when dragging and dropping, just find the closest free spot
              int[] result = layout.findNearestVacantArea(
                      touchXY[0], touchXY[1], minSpanXY[0], minSpanXY[1], spanXY[0],
                      spanXY[1], cellXY, finalSpan);
              spanXY[0] = finalSpan[0];
              spanXY[1] = finalSpan[1];
              foundCellSpan = (result != null);
          } else {
              foundCellSpan = layout.findCellForSpan(cellXY, minSpanXY[0], minSpanXY[1]);
          }
  
          if (!foundCellSpan) {
              if (appWidgetId != -1) {
                  // Deleting an app widget ID is a void call but writes to disk before returning
                  // to the caller...
                  new AsyncTask<Void, Void, Void>() {
                      public Void doInBackground(Void ... args) {
                          mAppWidgetHost.deleteAppWidgetId(appWidgetId);
                          return null;
                      }
                  }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
              }
              showOutOfSpaceMessage(isHotseatLayout(layout));
              return;
          }
  
          // Build Launcher-specific widget info and save to database
          LauncherAppWidgetInfo launcherInfo = new LauncherAppWidgetInfo(appWidgetId,
                  appWidgetInfo.provider);
          launcherInfo.spanX = spanXY[0];
          launcherInfo.spanY = spanXY[1];
          launcherInfo.minSpanX = mPendingAddInfo.minSpanX;
          launcherInfo.minSpanY = mPendingAddInfo.minSpanY;
          launcherInfo.user = mAppWidgetManager.getUser(appWidgetInfo);
  
          LauncherModel.addItemToDatabase(this, launcherInfo,
                  container, screenId, cellXY[0], cellXY[1], false);
  
          if (!mRestoring) {
              if (hostView == null) {
                  // Perform actual inflation because we're live
                  launcherInfo.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
                  launcherInfo.hostView.setAppWidget(appWidgetId, appWidgetInfo);
              } else {
                  // The AppWidgetHostView has already been inflated and instantiated
                  launcherInfo.hostView = hostView;
              }
  
              launcherInfo.hostView.setTag(launcherInfo);
              launcherInfo.hostView.setVisibility(View.VISIBLE);
              launcherInfo.notifyWidgetSizeChanged(this);
  
              mWorkspace.addInScreen(launcherInfo.hostView, container, screenId, cellXY[0], cellXY[1],
                      launcherInfo.spanX, launcherInfo.spanY, isWorkspaceLocked());
  
              addWidgetToAutoAdvanceIfNeeded(launcherInfo.hostView, appWidgetInfo);
          }
          resetAddInfo();
      }
  
      private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
          @Override
          public void onReceive(Context context, Intent intent) {
              final String action = intent.getAction();
              if (Intent.ACTION_SCREEN_OFF.equals(action)) {
                  mUserPresent = false;
                  mDragLayer.clearAllResizeFrames();
                  updateRunning();
  
                  // Reset AllApps to its initial state only if we are not in the middle of
                  // processing a multi-step drop
                  if (mAppsCustomizeTabHost != null && mPendingAddInfo.container == ItemInfo.NO_ID) {
                      showWorkspace(false);
                  }
              } else if (Intent.ACTION_USER_PRESENT.equals(action)) {
                  mUserPresent = true;
                  updateRunning();
              } else if (ENABLE_DEBUG_INTENTS && DebugIntents.DELETE_DATABASE.equals(action)) {
                  mModel.resetLoadedState(false, true);
                  mModel.startLoader(false, PagedView.INVALID_RESTORE_PAGE,
                          LauncherModel.LOADER_FLAG_CLEAR_WORKSPACE);
              } else if (ENABLE_DEBUG_INTENTS && DebugIntents.MIGRATE_DATABASE.equals(action)) {
                  mModel.resetLoadedState(false, true);
                  mModel.startLoader(false, PagedView.INVALID_RESTORE_PAGE,
                          LauncherModel.LOADER_FLAG_CLEAR_WORKSPACE
                                  | LauncherModel.LOADER_FLAG_MIGRATE_SHORTCUTS);
              } else if (LauncherAppsCompat.ACTION_MANAGED_PROFILE_ADDED.equals(action)
                      || LauncherAppsCompat.ACTION_MANAGED_PROFILE_REMOVED.equals(action)) {
                  getModel().forceReload();
              }
          }
      };
  
      @Override
      public void onAttachedToWindow() {
          super.onAttachedToWindow();
  
          // Listen for broadcasts related to user-presence
          final IntentFilter filter = new IntentFilter();
          filter.addAction(Intent.ACTION_SCREEN_OFF);
          filter.addAction(Intent.ACTION_USER_PRESENT);
          // For handling managed profiles
          filter.addAction(LauncherAppsCompat.ACTION_MANAGED_PROFILE_ADDED);
          filter.addAction(LauncherAppsCompat.ACTION_MANAGED_PROFILE_REMOVED);
          if (ENABLE_DEBUG_INTENTS) {
              filter.addAction(DebugIntents.DELETE_DATABASE);
              filter.addAction(DebugIntents.MIGRATE_DATABASE);
          }
          registerReceiver(mReceiver, filter);
          FirstFrameAnimatorHelper.initializeDrawListener(getWindow().getDecorView());
          setupTransparentSystemBarsForLmp();
          mAttached = true;
          mVisible = true;
      }
  
      /**
       * Sets up transparent navigation and status bars in LMP.
       * This method is a no-op for other platform versions.
       */
      @TargetApi(19)
      private void setupTransparentSystemBarsForLmp() {
          // TODO(sansid): use the APIs directly when compiling against L sdk.
          // Currently we use reflection to access the flags and the API to set the transparency
          // on the System bars.
          if (Utilities.isLmpOrAbove()) {
              try {
                  getWindow().getAttributes().systemUiVisibility |=
                          (View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                                  | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                                  | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
                  getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
                          | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
                  Field drawsSysBackgroundsField = WindowManager.LayoutParams.class.getField(
                          "FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS");
                  getWindow().addFlags(drawsSysBackgroundsField.getInt(null));
  
                  Method setStatusBarColorMethod =
                          Window.class.getDeclaredMethod("setStatusBarColor", int.class);
                  Method setNavigationBarColorMethod =
                          Window.class.getDeclaredMethod("setNavigationBarColor", int.class);
                  setStatusBarColorMethod.invoke(getWindow(), Color.TRANSPARENT);
                  setNavigationBarColorMethod.invoke(getWindow(), Color.TRANSPARENT);
              } catch (NoSuchFieldException e) {
                  Log.w(TAG, "NoSuchFieldException while setting up transparent bars");
              } catch (NoSuchMethodException ex) {
                  Log.w(TAG, "NoSuchMethodException while setting up transparent bars");
              } catch (IllegalAccessException e) {
                  Log.w(TAG, "IllegalAccessException while setting up transparent bars");
              } catch (IllegalArgumentException e) {
                  Log.w(TAG, "IllegalArgumentException while setting up transparent bars");
              } catch (InvocationTargetException e) {
                  Log.w(TAG, "InvocationTargetException while setting up transparent bars");
              } finally {}
          }
      }
  
      @Override
      public void onDetachedFromWindow() {
          super.onDetachedFromWindow();
          mVisible = false;
  
          if (mAttached) {
              unregisterReceiver(mReceiver);
              mAttached = false;
          }
          updateRunning();
      }
  
      public void onWindowVisibilityChanged(int visibility) {
          mVisible = visibility == View.VISIBLE;
          updateRunning();
          // The following code used to be in onResume, but it turns out onResume is called when
          // you're in All Apps and click home to go to the workspace. onWindowVisibilityChanged
          // is a more appropriate event to handle
          if (mVisible) {
              mAppsCustomizeTabHost.onWindowVisible();
              if (!mWorkspaceLoading) {
                  final ViewTreeObserver observer = mWorkspace.getViewTreeObserver();
                  // We want to let Launcher draw itself at least once before we force it to build
                  // layers on all the workspace pages, so that transitioning to Launcher from other
                  // apps is nice and speedy.
                  observer.addOnDrawListener(new ViewTreeObserver.OnDrawListener() {
                      private boolean mStarted = false;
                      public void onDraw() {
                          if (mStarted) return;
                          mStarted = true;
                          // We delay the layer building a bit in order to give
                          // other message processing a time to run.  In particular
                          // this avoids a delay in hiding the IME if it was
                          // currently shown, because doing that may involve
                          // some communication back with the app.
                          mWorkspace.postDelayed(mBuildLayersRunnable, 500);
                          final ViewTreeObserver.OnDrawListener listener = this;
                          mWorkspace.post(new Runnable() {
                                  public void run() {
                                      if (mWorkspace != null &&
                                              mWorkspace.getViewTreeObserver() != null) {
                                          mWorkspace.getViewTreeObserver().
                                                  removeOnDrawListener(listener);
                                      }
                                  }
                              });
                          return;
                      }
                  });
              }
              clearTypedText();
          }
      }
  
      private void sendAdvanceMessage(long delay) {
          mHandler.removeMessages(ADVANCE_MSG);
          Message msg = mHandler.obtainMessage(ADVANCE_MSG);
          mHandler.sendMessageDelayed(msg, delay);
          mAutoAdvanceSentTime = System.currentTimeMillis();
      }
  
      private void updateRunning() {
          boolean autoAdvanceRunning = mVisible && mUserPresent && !mWidgetsToAdvance.isEmpty();
          if (autoAdvanceRunning != mAutoAdvanceRunning) {
              mAutoAdvanceRunning = autoAdvanceRunning;
              if (autoAdvanceRunning) {
                  long delay = mAutoAdvanceTimeLeft == -1 ? mAdvanceInterval : mAutoAdvanceTimeLeft;
                  sendAdvanceMessage(delay);
              } else {
                  if (!mWidgetsToAdvance.isEmpty()) {
                      mAutoAdvanceTimeLeft = Math.max(0, mAdvanceInterval -
                              (System.currentTimeMillis() - mAutoAdvanceSentTime));
                  }
                  mHandler.removeMessages(ADVANCE_MSG);
                  mHandler.removeMessages(0); // Remove messages sent using postDelayed()
              }
          }
      }
  
      private final Handler mHandler = new Handler() {
          @Override
          public void handleMessage(Message msg) {
              if (msg.what == ADVANCE_MSG) {
                  int i = 0;
                  for (View key: mWidgetsToAdvance.keySet()) {
                      final View v = key.findViewById(mWidgetsToAdvance.get(key).autoAdvanceViewId);
                      final int delay = mAdvanceStagger * i;
                      if (v instanceof Advanceable) {
                         postDelayed(new Runnable() {
                             public void run() {
                                 ((Advanceable) v).advance();
                             }
                         }, delay);
                      }
                      i++;
                  }
                  sendAdvanceMessage(mAdvanceInterval);
              }
          }
      };
  
      void addWidgetToAutoAdvanceIfNeeded(View hostView, AppWidgetProviderInfo appWidgetInfo) {
          if (appWidgetInfo == null || appWidgetInfo.autoAdvanceViewId == -1) return;
          View v = hostView.findViewById(appWidgetInfo.autoAdvanceViewId);
          if (v instanceof Advanceable) {
              mWidgetsToAdvance.put(hostView, appWidgetInfo);
              ((Advanceable) v).fyiWillBeAdvancedByHostKThx();
              updateRunning();
          }
      }
  
      void removeWidgetToAutoAdvance(View hostView) {
          if (mWidgetsToAdvance.containsKey(hostView)) {
              mWidgetsToAdvance.remove(hostView);
              updateRunning();
          }
      }
  
      public void removeAppWidget(LauncherAppWidgetInfo launcherInfo) {
          removeWidgetToAutoAdvance(launcherInfo.hostView);
          launcherInfo.hostView = null;
      }
  
      void showOutOfSpaceMessage(boolean isHotseatLayout) {
          int strId = (isHotseatLayout ? R.string.hotseat_out_of_space : R.string.out_of_space);
          Toast.makeText(this, getString(strId), Toast.LENGTH_SHORT).show();
      }
  
      public DragLayer getDragLayer() {
          return mDragLayer;
      }
  
      public Workspace getWorkspace() {
          return mWorkspace;
      }
  
      public Hotseat getHotseat() {
          return mHotseat;
      }
  
      public ViewGroup getOverviewPanel() {
          return mOverviewPanel;
      }
  
      public SearchDropTargetBar getSearchBar() {
          return mSearchDropTargetBar;
      }
  
      public LauncherAppWidgetHost getAppWidgetHost() {
          return mAppWidgetHost;
      }
  
      public LauncherModel getModel() {
          return mModel;
      }
  
      protected SharedPreferences getSharedPrefs() {
          return mSharedPrefs;
      }
  
      public void closeSystemDialogs() {
          getWindow().closeAllPanels();
  
          // Whatever we were doing is hereby canceled.
          setWaitingForResult(false);
      }
  
      @Override
      protected void onNewIntent(Intent intent) {
          long startTime = 0;
          if (DEBUG_RESUME_TIME) {
              startTime = System.currentTimeMillis();
          }
          super.onNewIntent(intent);
  
          // Close the menu
          if (Intent.ACTION_MAIN.equals(intent.getAction())) {
              // also will cancel mWaitingForResult.
              closeSystemDialogs();
  
              final boolean alreadyOnHome = mHasFocus && ((intent.getFlags() &
                      Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT)
                      != Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
  
              if (mWorkspace == null) {
                  // Can be cases where mWorkspace is null, this prevents a NPE
                  return;
              }
              Folder openFolder = mWorkspace.getOpenFolder();
              // In all these cases, only animate if we're already on home
              mWorkspace.exitWidgetResizeMode();
  
              boolean moveToDefaultScreen = mLauncherCallbacks != null ?
                      mLauncherCallbacks.shouldMoveToDefaultScreenOnHomeIntent() : true;
              if (alreadyOnHome && mState == State.WORKSPACE && !mWorkspace.isTouchActive() &&
                      openFolder == null && moveToDefaultScreen) {
                  mWorkspace.moveToDefaultScreen(true);
              }
  
              closeFolder();
              exitSpringLoadedDragMode();
  
              // If we are already on home, then just animate back to the workspace,
              // otherwise, just wait until onResume to set the state back to Workspace
              if (alreadyOnHome) {
                  showWorkspace(true);
              } else {
                  mOnResumeState = State.WORKSPACE;
              }
  
              final View v = getWindow().peekDecorView();
              if (v != null && v.getWindowToken() != null) {
                  InputMethodManager imm = (InputMethodManager)getSystemService(
                          INPUT_METHOD_SERVICE);
                  imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
              }
  
              // Reset the apps customize page
              if (!alreadyOnHome && mAppsCustomizeTabHost != null) {
                  mAppsCustomizeTabHost.reset();
              }
  
              if (mLauncherCallbacks != null) {
                  mLauncherCallbacks.onHomeIntent();
              }
          }
  
          if (DEBUG_RESUME_TIME) {
              Log.d(TAG, "Time spent in onNewIntent: " + (System.currentTimeMillis() - startTime));
          }
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onNewIntent(intent);
          }
      }
  
      @Override
      public void onRestoreInstanceState(Bundle state) {
          super.onRestoreInstanceState(state);
          for (int page: mSynchronouslyBoundPages) {
              mWorkspace.restoreInstanceStateForChild(page);
          }
      }
  
      @Override
      protected void onSaveInstanceState(Bundle outState) {
          if (mWorkspace.getChildCount() > 0) {
              outState.putInt(RUNTIME_STATE_CURRENT_SCREEN,
                      mWorkspace.getCurrentPageOffsetFromCustomContent());
          }
          super.onSaveInstanceState(outState);
  
          outState.putInt(RUNTIME_STATE, mState.ordinal());
          // We close any open folder since it will not be re-opened, and we need to make sure
          // this state is reflected.
          closeFolder();
  
          if (mPendingAddInfo.container != ItemInfo.NO_ID && mPendingAddInfo.screenId > -1 &&
                  mWaitingForResult) {
              outState.putLong(RUNTIME_STATE_PENDING_ADD_CONTAINER, mPendingAddInfo.container);
              outState.putLong(RUNTIME_STATE_PENDING_ADD_SCREEN, mPendingAddInfo.screenId);
              outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_X, mPendingAddInfo.cellX);
              outState.putInt(RUNTIME_STATE_PENDING_ADD_CELL_Y, mPendingAddInfo.cellY);
              outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_X, mPendingAddInfo.spanX);
              outState.putInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y, mPendingAddInfo.spanY);
              outState.putParcelable(RUNTIME_STATE_PENDING_ADD_WIDGET_INFO, mPendingAddWidgetInfo);
              outState.putInt(RUNTIME_STATE_PENDING_ADD_WIDGET_ID, mPendingAddWidgetId);
          }
  
          if (mFolderInfo != null && mWaitingForResult) {
              outState.putBoolean(RUNTIME_STATE_PENDING_FOLDER_RENAME, true);
              outState.putLong(RUNTIME_STATE_PENDING_FOLDER_RENAME_ID, mFolderInfo.id);
          }
  
          // Save the current AppsCustomize tab
          if (mAppsCustomizeTabHost != null) {
              AppsCustomizePagedView.ContentType type = mAppsCustomizeContent.getContentType();
              String currentTabTag = mAppsCustomizeTabHost.getTabTagForContentType(type);
              if (currentTabTag != null) {
                  outState.putString("apps_customize_currentTab", currentTabTag);
              }
              int currentIndex = mAppsCustomizeContent.getSaveInstanceStateIndex();
              outState.putInt("apps_customize_currentIndex", currentIndex);
          }
          outState.putSerializable(RUNTIME_STATE_VIEW_IDS, mItemIdToViewId);
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onSaveInstanceState(outState);
          }
      }
  
      @Override
      public void onDestroy() {
          super.onDestroy();
  
          // Remove all pending runnables
          mHandler.removeMessages(ADVANCE_MSG);
          mHandler.removeMessages(0);
          mWorkspace.removeCallbacks(mBuildLayersRunnable);
  
          // Stop callbacks from LauncherModel
          LauncherAppState app = (LauncherAppState.getInstance());
  
          // It's possible to receive onDestroy after a new Launcher activity has
          // been created. In this case, don't interfere with the new Launcher.
          if (mModel.isCurrentCallbacks(this)) {
              mModel.stopLoader();
              app.setLauncher(null);
          }
  
          try {
              mAppWidgetHost.stopListening();
          } catch (NullPointerException ex) {
              Log.w(TAG, "problem while stopping AppWidgetHost during Launcher destruction", ex);
          }
          mAppWidgetHost = null;
  
          mWidgetsToAdvance.clear();
  
          TextKeyListener.getInstance().release();
  
          // Disconnect any of the callbacks and drawables associated with ItemInfos on the workspace
          // to prevent leaking Launcher activities on orientation change.
          if (mModel != null) {
              mModel.unbindItemInfosAndClearQueuedBindRunnables();
          }
  
          getContentResolver().unregisterContentObserver(mWidgetObserver);
          unregisterReceiver(mCloseSystemDialogsReceiver);
  
          mDragLayer.clearAllResizeFrames();
          ((ViewGroup) mWorkspace.getParent()).removeAllViews();
          mWorkspace.removeAllWorkspaceScreens();
          mWorkspace = null;
          mDragController = null;
  
          LauncherAnimUtils.onDestroyActivity();
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onDestroy();
          }
      }
  
      public DragController getDragController() {
          return mDragController;
      }
  
      @Override
      public void startActivityForResult(Intent intent, int requestCode) {
          if (requestCode >= 0) {
              setWaitingForResult(true);
          }
          super.startActivityForResult(intent, requestCode);
      }
  
      /**
       * Indicates that we want global search for this activity by setting the globalSearch
       * argument for {@link #startSearch} to true.
       */
      @Override
      public void startSearch(String initialQuery, boolean selectInitialQuery,
              Bundle appSearchData, boolean globalSearch) {
  
          showWorkspace(true);
  
          if (initialQuery == null) {
              // Use any text typed in the launcher as the initial query
              initialQuery = getTypedText();
          }
          if (appSearchData == null) {
              appSearchData = new Bundle();
              appSearchData.putString("source", "launcher-search");
          }
          Rect sourceBounds = new Rect();
          if (mSearchDropTargetBar != null) {
              sourceBounds = mSearchDropTargetBar.getSearchBarBounds();
          }
  
          boolean clearTextImmediately = startSearch(initialQuery, selectInitialQuery,
                  appSearchData, sourceBounds);
          if (clearTextImmediately) {
              clearTypedText();
          }
      }
  
      /**
       * Start a text search.
       *
       * @return {@code true} if the search will start immediately, so any further keypresses
       * will be handled directly by the search UI. {@code false} if {@link Launcher} should continue
       * to buffer keypresses.
       */
      public boolean startSearch(String initialQuery,
              boolean selectInitialQuery, Bundle appSearchData, Rect sourceBounds) {
          if (mLauncherCallbacks != null && mLauncherCallbacks.providesSearch()) {
              return mLauncherCallbacks.startSearch(initialQuery, selectInitialQuery, appSearchData,
                      sourceBounds);
          }
  
          startGlobalSearch(initialQuery, selectInitialQuery,
                  appSearchData, sourceBounds);
          return false;
      }
  
      /**
       * Starts the global search activity. This code is a copied from SearchManager
       */
      private void startGlobalSearch(String initialQuery,
              boolean selectInitialQuery, Bundle appSearchData, Rect sourceBounds) {
          final SearchManager searchManager =
              (SearchManager) getSystemService(Context.SEARCH_SERVICE);
          ComponentName globalSearchActivity = searchManager.getGlobalSearchActivity();
          if (globalSearchActivity == null) {
              Log.w(TAG, "No global search activity found.");
              return;
          }
          Intent intent = new Intent(SearchManager.INTENT_ACTION_GLOBAL_SEARCH);
          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          intent.setComponent(globalSearchActivity);
          // Make sure that we have a Bundle to put source in
          if (appSearchData == null) {
              appSearchData = new Bundle();
          } else {
              appSearchData = new Bundle(appSearchData);
          }
          // Set source to package name of app that starts global search if not set already.
          if (!appSearchData.containsKey("source")) {
              appSearchData.putString("source", getPackageName());
          }
          intent.putExtra(SearchManager.APP_DATA, appSearchData);
          if (!TextUtils.isEmpty(initialQuery)) {
              intent.putExtra(SearchManager.QUERY, initialQuery);
          }
          if (selectInitialQuery) {
              intent.putExtra(SearchManager.EXTRA_SELECT_QUERY, selectInitialQuery);
          }
          intent.setSourceBounds(sourceBounds);
          try {
              startActivity(intent);
          } catch (ActivityNotFoundException ex) {
              Log.e(TAG, "Global search activity not found: " + globalSearchActivity);
          }
      }
  
      public boolean isOnCustomContent() {
          return mWorkspace.isOnOrMovingToCustomContent();
      }
  
      @Override
      public boolean onPrepareOptionsMenu(Menu menu) {
          super.onPrepareOptionsMenu(menu);
          if (!isOnCustomContent()) {
              // Close any open folders
              closeFolder();
              // Stop resizing any widgets
              mWorkspace.exitWidgetResizeMode();
              if (!mWorkspace.isInOverviewMode()) {
                  // Show the overview mode
                  showOverviewMode(true);
              } else {
                  showWorkspace(true);
              }
          }
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.onPrepareOptionsMenu(menu);
          }
  
          return false;
      }
  
      @Override
      public boolean onSearchRequested() {
          startSearch(null, false, null, true);
          // Use a custom animation for launching search
          return true;
      }
  
      public boolean isWorkspaceLocked() {
          return mWorkspaceLoading || mWaitingForResult;
      }
  
      public boolean isWorkspaceLoading() {
          return mWorkspaceLoading;
      }
  
      private void setWorkspaceLoading(boolean value) {
          boolean isLocked = isWorkspaceLocked();
          mWorkspaceLoading = value;
          if (isLocked != isWorkspaceLocked()) {
              onWorkspaceLockedChanged();
          }
      }
  
      private void setWaitingForResult(boolean value) {
          boolean isLocked = isWorkspaceLocked();
          mWaitingForResult = value;
          if (isLocked != isWorkspaceLocked()) {
              onWorkspaceLockedChanged();
          }
      }
  
      protected void onWorkspaceLockedChanged() {
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onWorkspaceLockedChanged();
          }
      }
  
      private void resetAddInfo() {
          mPendingAddInfo.container = ItemInfo.NO_ID;
          mPendingAddInfo.screenId = -1;
          mPendingAddInfo.cellX = mPendingAddInfo.cellY = -1;
          mPendingAddInfo.spanX = mPendingAddInfo.spanY = -1;
          mPendingAddInfo.minSpanX = mPendingAddInfo.minSpanY = -1;
          mPendingAddInfo.dropPos = null;
      }
  
      void addAppWidgetImpl(final int appWidgetId, final ItemInfo info,
              final AppWidgetHostView boundWidget, final AppWidgetProviderInfo appWidgetInfo) {
          addAppWidgetImpl(appWidgetId, info, boundWidget, appWidgetInfo, 0);
      }
  
      void addAppWidgetImpl(final int appWidgetId, final ItemInfo info,
              final AppWidgetHostView boundWidget, final AppWidgetProviderInfo appWidgetInfo, int
              delay) {
          if (appWidgetInfo.configure != null) {
              mPendingAddWidgetInfo = appWidgetInfo;
              mPendingAddWidgetId = appWidgetId;
  
              // Launch over to configure widget, if needed
              mAppWidgetManager.startConfigActivity(appWidgetInfo, appWidgetId, this,
                      mAppWidgetHost, REQUEST_CREATE_APPWIDGET);
  
          } else {
              // Otherwise just add it
              Runnable onComplete = new Runnable() {
                  @Override
                  public void run() {
                      // Exit spring loaded mode if necessary after adding the widget
                      exitSpringLoadedDragModeDelayed(true, EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT,
                              null);
                  }
              };
              completeAddAppWidget(appWidgetId, info.container, info.screenId, boundWidget,
                      appWidgetInfo);
              mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete, delay, false);
          }
      }
  
      protected void moveToCustomContentScreen(boolean animate) {
          // Close any folders that may be open.
          closeFolder();
          mWorkspace.moveToCustomContentScreen(animate);
      }
      /**
       * Process a shortcut drop.
       *
       * @param componentName The name of the component
       * @param screenId The ID of the screen where it should be added
       * @param cell The cell it should be added to, optional
       * @param position The location on the screen where it was dropped, optional
       */
      void processShortcutFromDrop(ComponentName componentName, long container, long screenId,
              int[] cell, int[] loc) {
          resetAddInfo();
          mPendingAddInfo.container = container;
          mPendingAddInfo.screenId = screenId;
          mPendingAddInfo.dropPos = loc;
  
          if (cell != null) {
              mPendingAddInfo.cellX = cell[0];
              mPendingAddInfo.cellY = cell[1];
          }
  
          Intent createShortcutIntent = new Intent(Intent.ACTION_CREATE_SHORTCUT);
          createShortcutIntent.setComponent(componentName);
          processShortcut(createShortcutIntent);
      }
  
      /**
       * Process a widget drop.
       *
       * @param info The PendingAppWidgetInfo of the widget being added.
       * @param screenId The ID of the screen where it should be added
       * @param cell The cell it should be added to, optional
       * @param position The location on the screen where it was dropped, optional
       */
      void addAppWidgetFromDrop(PendingAddWidgetInfo info, long container, long screenId,
              int[] cell, int[] span, int[] loc) {
          resetAddInfo();
          mPendingAddInfo.container = info.container = container;
          mPendingAddInfo.screenId = info.screenId = screenId;
          mPendingAddInfo.dropPos = loc;
          mPendingAddInfo.minSpanX = info.minSpanX;
          mPendingAddInfo.minSpanY = info.minSpanY;
  
          if (cell != null) {
              mPendingAddInfo.cellX = cell[0];
              mPendingAddInfo.cellY = cell[1];
          }
          if (span != null) {
              mPendingAddInfo.spanX = span[0];
              mPendingAddInfo.spanY = span[1];
          }
  
          AppWidgetHostView hostView = info.boundWidget;
          int appWidgetId;
          if (hostView != null) {
              appWidgetId = hostView.getAppWidgetId();
              addAppWidgetImpl(appWidgetId, info, hostView, info.info);
          } else {
              // In this case, we either need to start an activity to get permission to bind
              // the widget, or we need to start an activity to configure the widget, or both.
              appWidgetId = getAppWidgetHost().allocateAppWidgetId();
              Bundle options = info.bindOptions;
  
              boolean success = mAppWidgetManager.bindAppWidgetIdIfAllowed(
                      appWidgetId, info.info, options);
              if (success) {
                  addAppWidgetImpl(appWidgetId, info, null, info.info);
              } else {
                  mPendingAddWidgetInfo = info.info;
                  Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_BIND);
                  intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
                  intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, info.componentName);
                  mAppWidgetManager.getUser(mPendingAddWidgetInfo)
                      .addToIntent(intent, AppWidgetManager.EXTRA_APPWIDGET_PROVIDER_PROFILE);
                  // TODO: we need to make sure that this accounts for the options bundle.
                  // intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS, options);
                  startActivityForResult(intent, REQUEST_BIND_APPWIDGET);
              }
          }
      }
  
      void processShortcut(Intent intent) {
          Utilities.startActivityForResultSafely(this, intent, REQUEST_CREATE_SHORTCUT);
      }
  
      void processWallpaper(Intent intent) {
          startActivityForResult(intent, REQUEST_PICK_WALLPAPER);
      }
  
      FolderIcon addFolder(CellLayout layout, long container, final long screenId, int cellX,
              int cellY) {
          final FolderInfo folderInfo = new FolderInfo();
          folderInfo.title = getText(R.string.folder_name);
  
          // Update the model
          LauncherModel.addItemToDatabase(Launcher.this, folderInfo, container, screenId, cellX, cellY,
                  false);
          sFolders.put(folderInfo.id, folderInfo);
  
          // Create the view
          FolderIcon newFolder =
              FolderIcon.fromXml(R.layout.folder_icon, this, layout, folderInfo, mIconCache);
          mWorkspace.addInScreen(newFolder, container, screenId, cellX, cellY, 1, 1,
                  isWorkspaceLocked());
          // Force measure the new folder icon
          CellLayout parent = mWorkspace.getParentCellLayoutForView(newFolder);
          parent.getShortcutsAndWidgets().measureChild(newFolder);
          return newFolder;
      }
  
      void removeFolder(FolderInfo folder) {
          sFolders.remove(folder.id);
      }
  
      protected ComponentName getWallpaperPickerComponent() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.getWallpaperPickerComponent();
          }
          return new ComponentName(getPackageName(), LauncherWallpaperPickerActivity.class.getName());
      }
  
      /**
       * Registers various content observers. The current implementation registers
       * only a favorites observer to keep track of the favorites applications.
       */
      private void registerContentObservers() {
          ContentResolver resolver = getContentResolver();
          resolver.registerContentObserver(LauncherProvider.CONTENT_APPWIDGET_RESET_URI,
                  true, mWidgetObserver);
      }
  
      @Override
      public boolean dispatchKeyEvent(KeyEvent event) {
          if (event.getAction() == KeyEvent.ACTION_DOWN) {
              switch (event.getKeyCode()) {
                  case KeyEvent.KEYCODE_HOME:
                      return true;
                  case KeyEvent.KEYCODE_VOLUME_DOWN:
                      if (Utilities.isPropertyEnabled(DUMP_STATE_PROPERTY)) {
                          dumpState();
                          return true;
                      }
                      break;
              }
          } else if (event.getAction() == KeyEvent.ACTION_UP) {
              switch (event.getKeyCode()) {
                  case KeyEvent.KEYCODE_HOME:
                      return true;
              }
          }
  
          return super.dispatchKeyEvent(event);
      }
  
      @Override
      public void onBackPressed() {
          if (mLauncherCallbacks != null && mLauncherCallbacks.handleBackPressed()) {
              return;
          }
  
          if (isAllAppsVisible()) {
              if (mAppsCustomizeContent.getContentType() ==
                      AppsCustomizePagedView.ContentType.Applications) {
                  showWorkspace(true);
              } else {
                  showOverviewMode(true);
              }
          } else if (mWorkspace.isInOverviewMode()) {
              mWorkspace.exitOverviewMode(true);
          } else if (mWorkspace.getOpenFolder() != null) {
              Folder openFolder = mWorkspace.getOpenFolder();
              if (openFolder.isEditingName()) {
                  openFolder.dismissEditingName();
              } else {
                  closeFolder();
              }
          } else {
              mWorkspace.exitWidgetResizeMode();
  
              // Back button is a no-op here, but give at least some feedback for the button press
              mWorkspace.showOutlinesTemporarily();
          }
      }
  
      /**
       * Re-listen when widgets are reset.
       */
      private void onAppWidgetReset() {
          if (mAppWidgetHost != null) {
              mAppWidgetHost.startListening();
          }
      }
  
      /**
       * Launches the intent referred by the clicked shortcut.
       *
       * @param v The view representing the clicked shortcut.
       */
      public void onClick(View v) {
          // Make sure that rogue clicks don't get through while allapps is launching, or after the
          // view has detached (it's possible for this to happen if the view is removed mid touch).
          if (v.getWindowToken() == null) {
              return;
          }
  
          if (!mWorkspace.isFinishedSwitchingState()) {
              return;
          }
  
          if (v instanceof Workspace) {
              if (mWorkspace.isInOverviewMode()) {
                  mWorkspace.exitOverviewMode(true);
              }
              return;
          }
  
          if (v instanceof CellLayout) {
              if (mWorkspace.isInOverviewMode()) {
                  mWorkspace.exitOverviewMode(mWorkspace.indexOfChild(v), true);
              }
          }
  
          Object tag = v.getTag();
          if (tag instanceof ShortcutInfo) {
              onClickAppShortcut(v);
          } else if (tag instanceof FolderInfo) {
              if (v instanceof FolderIcon) {
                  onClickFolderIcon(v);
              }
          } else if (v == mAllAppsButton) {
              onClickAllAppsButton(v);
          } else if (tag instanceof AppInfo) {
              startAppShortcutOrInfoActivity(v);
          } else if (tag instanceof LauncherAppWidgetInfo) {
              if (v instanceof PendingAppWidgetHostView) {
                  onClickPendingWidget((PendingAppWidgetHostView) v);
              }
          }
      }
  
      public void onClickPagedViewIcon(View v) {
          startAppShortcutOrInfoActivity(v);
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onClickPagedViewIcon(v);
          }
      }
  
      public boolean onTouch(View v, MotionEvent event) {
          return false;
      }
  
      /**
       * Event handler for the app widget view which has not fully restored.
       */
      public void onClickPendingWidget(final PendingAppWidgetHostView v) {
          if (mIsSafeModeEnabled) {
              Toast.makeText(this, R.string.safemode_widget_error, Toast.LENGTH_SHORT).show();
              return;
          }
  
          final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag();
          if (v.isReadyForClickSetup()) {
              int widgetId = info.appWidgetId;
              AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(widgetId);
              if (appWidgetInfo != null) {
                  mPendingAddWidgetInfo = appWidgetInfo;
                  mPendingAddInfo.copyFrom(info);
                  mPendingAddWidgetId = widgetId;
  
                  AppWidgetManagerCompat.getInstance(this).startConfigActivity(appWidgetInfo,
                          info.appWidgetId, this, mAppWidgetHost, REQUEST_RECONFIGURE_APPWIDGET);
              }
          } else if (info.installProgress < 0) {
              // The install has not been queued
              final String packageName = info.providerName.getPackageName();
              showBrokenAppInstallDialog(packageName,
                  new DialogInterface.OnClickListener() {
                      public void onClick(DialogInterface dialog, int id) {
                          startActivitySafely(v, LauncherModel.getMarketIntent(packageName), info);
                      }
                  });
          } else {
              // Download has started.
              final String packageName = info.providerName.getPackageName();
              startActivitySafely(v, LauncherModel.getMarketIntent(packageName), info);
          }
      }
  
      /**
       * Event handler for the "grid" button that appears on the home screen, which
       * enters all apps mode.
       *
       * @param v The view that was clicked.
       */
      protected void onClickAllAppsButton(View v) {
          if (LOGD) Log.d(TAG, "onClickAllAppsButton");
          if (isAllAppsVisible()) {
              showWorkspace(true);
          } else {
              showAllApps(true, AppsCustomizePagedView.ContentType.Applications, false);
          }
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onClickAllAppsButton(v);
          }
      }
  
      private void showBrokenAppInstallDialog(final String packageName,
              DialogInterface.OnClickListener onSearchClickListener) {
          new AlertDialog.Builder(this)
              .setTitle(R.string.abandoned_promises_title)
              .setMessage(R.string.abandoned_promise_explanation)
              .setPositiveButton(R.string.abandoned_search, onSearchClickListener)
              .setNeutralButton(R.string.abandoned_clean_this,
                  new DialogInterface.OnClickListener() {
                      public void onClick(DialogInterface dialog, int id) {
                          final UserHandleCompat user = UserHandleCompat.myUserHandle();
                          mWorkspace.removeAbandonedPromise(packageName, user);
                      }
                  })
              .create().show();
          return;
      }
  
      /**
       * Event handler for an app shortcut click.
       *
       * @param v The view that was clicked. Must be a tagged with a {@link ShortcutInfo}.
       */
      protected void onClickAppShortcut(final View v) {
          if (LOGD) Log.d(TAG, "onClickAppShortcut");
          Object tag = v.getTag();
          if (!(tag instanceof ShortcutInfo)) {
              throw new IllegalArgumentException("Input must be a Shortcut");
          }
  
          // Open shortcut
          final ShortcutInfo shortcut = (ShortcutInfo) tag;
  
          if (shortcut.isDisabled != 0) {
              int error = R.string.activity_not_available;
              if ((shortcut.isDisabled & ShortcutInfo.FLAG_DISABLED_SAFEMODE) != 0) {
                  error = R.string.safemode_shortcut_error;
              }
              Toast.makeText(this, error, Toast.LENGTH_SHORT).show();
              return;
          }
  
          final Intent intent = shortcut.intent;
  
          // Check for special shortcuts
          if (intent.getComponent() != null) {
              final String shortcutClass = intent.getComponent().getClassName();
  
              if (shortcutClass.equals(MemoryDumpActivity.class.getName())) {
                  MemoryDumpActivity.startDump(this);
                  return;
              } else if (shortcutClass.equals(ToggleWeightWatcher.class.getName())) {
                  toggleShowWeightWatcher();
                  return;
              }
          }
  
          // Check for abandoned promise
          if ((v instanceof BubbleTextView)
                  && shortcut.isPromise()
                  && !shortcut.hasStatusFlag(ShortcutInfo.FLAG_INSTALL_SESSION_ACTIVE)) {
              showBrokenAppInstallDialog(
                      shortcut.getTargetComponent().getPackageName(),
                      new DialogInterface.OnClickListener() {
                          public void onClick(DialogInterface dialog, int id) {
                              startAppShortcutOrInfoActivity(v);
                          }
                      });
              return;
          }
  
          // Start activities
          startAppShortcutOrInfoActivity(v);
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onClickAppShortcut(v);
          }
      }
  
      private void startAppShortcutOrInfoActivity(View v) {
          Object tag = v.getTag();
          final ShortcutInfo shortcut;
          final Intent intent;
          if (tag instanceof ShortcutInfo) {
              shortcut = (ShortcutInfo) tag;
              intent = shortcut.intent;
              int[] pos = new int[2];
              v.getLocationOnScreen(pos);
              intent.setSourceBounds(new Rect(pos[0], pos[1],
                      pos[0] + v.getWidth(), pos[1] + v.getHeight()));
  
          } else if (tag instanceof AppInfo) {
              shortcut = null;
              intent = ((AppInfo) tag).intent;
          } else {
              throw new IllegalArgumentException("Input must be a Shortcut or AppInfo");
          }
  
          boolean success = startActivitySafely(v, intent, tag);
          mStats.recordLaunch(intent, shortcut);
  
          if (success && v instanceof BubbleTextView) {
              mWaitingForResume = (BubbleTextView) v;
              mWaitingForResume.setStayPressed(true);
          }
      }
  
      /**
       * Event handler for a folder icon click.
       *
       * @param v The view that was clicked. Must be an instance of {@link FolderIcon}.
       */
      protected void onClickFolderIcon(View v) {
          if (LOGD) Log.d(TAG, "onClickFolder");
          if (!(v instanceof FolderIcon)){
              throw new IllegalArgumentException("Input must be a FolderIcon");
          }
  
          FolderIcon folderIcon = (FolderIcon) v;
          final FolderInfo info = folderIcon.getFolderInfo();
          Folder openFolder = mWorkspace.getFolderForTag(info);
  
          // If the folder info reports that the associated folder is open, then verify that
          // it is actually opened. There have been a few instances where this gets out of sync.
          if (info.opened && openFolder == null) {
              Log.d(TAG, "Folder info marked as open, but associated folder is not open. Screen: "
                      + info.screenId + " (" + info.cellX + ", " + info.cellY + ")");
              info.opened = false;
          }
  
          if (!info.opened && !folderIcon.getFolder().isDestroyed()) {
              // Close any open folder
              closeFolder();
              // Open the requested folder
              openFolder(folderIcon);
          } else {
              // Find the open folder...
              int folderScreen;
              if (openFolder != null) {
                  folderScreen = mWorkspace.getPageForView(openFolder);
                  // .. and close it
                  closeFolder(openFolder);
                  if (folderScreen != mWorkspace.getCurrentPage()) {
                      // Close any folder open on the current screen
                      closeFolder();
                      // Pull the folder onto this screen
                      openFolder(folderIcon);
                  }
              }
          }
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onClickFolderIcon(v);
          }
      }
  
      /**
       * Event handler for the (Add) Widgets button that appears after a long press
       * on the home screen.
       */
      protected void onClickAddWidgetButton(View view) {
          if (LOGD) Log.d(TAG, "onClickAddWidgetButton");
          if (mIsSafeModeEnabled) {
              Toast.makeText(this, R.string.safemode_widget_error, Toast.LENGTH_SHORT).show();
          } else {
              showAllApps(true, AppsCustomizePagedView.ContentType.Widgets, true);
              if (mLauncherCallbacks != null) {
                  mLauncherCallbacks.onClickAddWidgetButton(view);
              }
          }
      }
  
      /**
       * Event handler for the wallpaper picker button that appears after a long press
       * on the home screen.
       */
      protected void onClickWallpaperPicker(View v) {
          if (LOGD) Log.d(TAG, "onClickWallpaperPicker");
          final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);
          pickWallpaper.setComponent(getWallpaperPickerComponent());
          startActivityForResult(pickWallpaper, REQUEST_PICK_WALLPAPER);
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onClickWallpaperPicker(v);
          }
      }
  
      /**
       * Event handler for a click on the settings button that appears after a long press
       * on the home screen.
       */
      protected void onClickSettingsButton(View v) {
          if (LOGD) Log.d(TAG, "onClickSettingsButton");
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onClickSettingsButton(v);
          }
      }
  
      public void onTouchDownAllAppsButton(View v) {
          // Provide the same haptic feedback that the system offers for virtual keys.
          v.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
      }
  
      public void performHapticFeedbackOnTouchDown(View v) {
          // Provide the same haptic feedback that the system offers for virtual keys.
          v.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
      }
  
      public View.OnTouchListener getHapticFeedbackTouchListener() {
          if (mHapticFeedbackTouchListener == null) {
              mHapticFeedbackTouchListener = new View.OnTouchListener() {
                  @Override
                  public boolean onTouch(View v, MotionEvent event) {
                      if ((event.getAction() & MotionEvent.ACTION_MASK) == MotionEvent.ACTION_DOWN) {
                          v.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
                      }
                      return false;
                  }
              };
          }
          return mHapticFeedbackTouchListener;
      }
  
      public void onDragStarted(View view) {
          if (isOnCustomContent()) {
              // Custom content screen doesn't participate in drag and drop. If on custom
              // content screen, move to default.
              moveWorkspaceToDefaultScreen();
          }
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onDragStarted(view);
          }
      }
  
      /**
       * Called when the user stops interacting with the launcher.
       * This implies that the user is now on the homescreen and is not doing housekeeping.
       */
      protected void onInteractionEnd() {
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onInteractionEnd();
          }
      }
  
      /**
       * Called when the user starts interacting with the launcher.
       * The possible interactions are:
       *  - open all apps
       *  - reorder an app shortcut, or a widget
       *  - open the overview mode.
       * This is a good time to stop doing things that only make sense
       * when the user is on the homescreen and not doing housekeeping.
       */
      protected void onInteractionBegin() {
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onInteractionBegin();
          }
      }
  
      void startApplicationDetailsActivity(ComponentName componentName, UserHandleCompat user) {
          try {
              LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
              launcherApps.showAppDetailsForProfile(componentName, user);
          } catch (SecurityException e) {
              Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
              Log.e(TAG, "Launcher does not have permission to launch settings");
          } catch (ActivityNotFoundException e) {
              Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
              Log.e(TAG, "Unable to launch settings");
          }
      }
  
      // returns true if the activity was started
      boolean startApplicationUninstallActivity(ComponentName componentName, int flags,
              UserHandleCompat user) {
          if ((flags & AppInfo.DOWNLOADED_FLAG) == 0) {
              // System applications cannot be installed. For now, show a toast explaining that.
              // We may give them the option of disabling apps this way.
              int messageId = R.string.uninstall_system_app_text;
              Toast.makeText(this, messageId, Toast.LENGTH_SHORT).show();
              return false;
          } else {
              String packageName = componentName.getPackageName();
              String className = componentName.getClassName();
              Intent intent = new Intent(
                      Intent.ACTION_DELETE, Uri.fromParts("package", packageName, className));
              intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
                      Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
              if (user != null) {
                  user.addToIntent(intent, Intent.EXTRA_USER);
              }
              startActivity(intent);
              return true;
          }
      }
  
      boolean startActivity(View v, Intent intent, Object tag) {
          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          try {
              // Only launch using the new animation if the shortcut has not opted out (this is a
              // private contract between launcher and may be ignored in the future).
              boolean useLaunchAnimation = (v != null) &&
                      !intent.hasExtra(INTENT_EXTRA_IGNORE_LAUNCH_ANIMATION);
              LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
              UserManagerCompat userManager = UserManagerCompat.getInstance(this);
  
              UserHandleCompat user = null;
              if (intent.hasExtra(AppInfo.EXTRA_PROFILE)) {
                  long serialNumber = intent.getLongExtra(AppInfo.EXTRA_PROFILE, -1);
                  user = userManager.getUserForSerialNumber(serialNumber);
              }
  
              Bundle optsBundle = null;
              if (useLaunchAnimation) {
                  ActivityOptions opts = Utilities.isLmpOrAbove() ?
                          ActivityOptions.makeCustomAnimation(this, R.anim.task_open_enter, R.anim.no_anim) :
                          ActivityOptions.makeScaleUpAnimation(v, 0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
                  optsBundle = opts.toBundle();
              }
  
              if (user == null || user.equals(UserHandleCompat.myUserHandle())) {
                  // Could be launching some bookkeeping activity
                  startActivity(intent, optsBundle);
              } else {
                  // TODO Component can be null when shortcuts are supported for secondary user
                  launcherApps.startActivityForProfile(intent.getComponent(), user,
                          intent.getSourceBounds(), optsBundle);
              }
              return true;
          } catch (SecurityException e) {
              Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
              Log.e(TAG, "Launcher does not have the permission to launch " + intent +
                      ". Make sure to create a MAIN intent-filter for the corresponding activity " +
                      "or use the exported attribute for this activity. "
                      + "tag="+ tag + " intent=" + intent, e);
          }
          return false;
      }
  
      boolean startActivitySafely(View v, Intent intent, Object tag) {
          boolean success = false;
          if (mIsSafeModeEnabled && !Utilities.isSystemApp(this, intent)) {
              Toast.makeText(this, R.string.safemode_shortcut_error, Toast.LENGTH_SHORT).show();
              return false;
          }
          try {
              success = startActivity(v, intent, tag);
          } catch (ActivityNotFoundException e) {
              Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
              Log.e(TAG, "Unable to launch. tag=" + tag + " intent=" + intent, e);
          }
          return success;
      }
  
      /**
       * This method draws the FolderIcon to an ImageView and then adds and positions that ImageView
       * in the DragLayer in the exact absolute location of the original FolderIcon.
       */
      private void copyFolderIconToImage(FolderIcon fi) {
          final int width = fi.getMeasuredWidth();
          final int height = fi.getMeasuredHeight();
  
          // Lazy load ImageView, Bitmap and Canvas
          if (mFolderIconImageView == null) {
              mFolderIconImageView = new ImageView(this);
          }
          if (mFolderIconBitmap == null || mFolderIconBitmap.getWidth() != width ||
                  mFolderIconBitmap.getHeight() != height) {
              mFolderIconBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
              mFolderIconCanvas = new Canvas(mFolderIconBitmap);
          }
  
          DragLayer.LayoutParams lp;
          if (mFolderIconImageView.getLayoutParams() instanceof DragLayer.LayoutParams) {
              lp = (DragLayer.LayoutParams) mFolderIconImageView.getLayoutParams();
          } else {
              lp = new DragLayer.LayoutParams(width, height);
          }
  
          // The layout from which the folder is being opened may be scaled, adjust the starting
          // view size by this scale factor.
          float scale = mDragLayer.getDescendantRectRelativeToSelf(fi, mRectForFolderAnimation);
          lp.customPosition = true;
          lp.x = mRectForFolderAnimation.left;
          lp.y = mRectForFolderAnimation.top;
          lp.width = (int) (scale * width);
          lp.height = (int) (scale * height);
  
          mFolderIconCanvas.drawColor(0, PorterDuff.Mode.CLEAR);
          fi.draw(mFolderIconCanvas);
          mFolderIconImageView.setImageBitmap(mFolderIconBitmap);
          if (fi.getFolder() != null) {
              mFolderIconImageView.setPivotX(fi.getFolder().getPivotXForIconAnimation());
              mFolderIconImageView.setPivotY(fi.getFolder().getPivotYForIconAnimation());
          }
          // Just in case this image view is still in the drag layer from a previous animation,
          // we remove it and re-add it.
          if (mDragLayer.indexOfChild(mFolderIconImageView) != -1) {
              mDragLayer.removeView(mFolderIconImageView);
          }
          mDragLayer.addView(mFolderIconImageView, lp);
          if (fi.getFolder() != null) {
              fi.getFolder().bringToFront();
          }
      }
  
      private void growAndFadeOutFolderIcon(FolderIcon fi) {
          if (fi == null) return;
          PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0);
          PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.5f);
          PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.5f);
  
          FolderInfo info = (FolderInfo) fi.getTag();
          if (info.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
              CellLayout cl = (CellLayout) fi.getParent().getParent();
              CellLayout.LayoutParams lp = (CellLayout.LayoutParams) fi.getLayoutParams();
              cl.setFolderLeaveBehindCell(lp.cellX, lp.cellY);
          }
  
          // Push an ImageView copy of the FolderIcon into the DragLayer and hide the original
          copyFolderIconToImage(fi);
          fi.setVisibility(View.INVISIBLE);
  
          ObjectAnimator oa = LauncherAnimUtils.ofPropertyValuesHolder(mFolderIconImageView, alpha,
                  scaleX, scaleY);
          if (Utilities.isLmpOrAbove()) {
              oa.setInterpolator(new LogDecelerateInterpolator(100, 0));
          }
          oa.setDuration(getResources().getInteger(R.integer.config_folderExpandDuration));
          oa.start();
      }
  
      private void shrinkAndFadeInFolderIcon(final FolderIcon fi) {
          if (fi == null) return;
          PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 1.0f);
          PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.0f);
          PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.0f);
  
          final CellLayout cl = (CellLayout) fi.getParent().getParent();
  
          // We remove and re-draw the FolderIcon in-case it has changed
          mDragLayer.removeView(mFolderIconImageView);
          copyFolderIconToImage(fi);
          ObjectAnimator oa = LauncherAnimUtils.ofPropertyValuesHolder(mFolderIconImageView, alpha,
                  scaleX, scaleY);
          oa.setDuration(getResources().getInteger(R.integer.config_folderExpandDuration));
          oa.addListener(new AnimatorListenerAdapter() {
              @Override
              public void onAnimationEnd(Animator animation) {
                  if (cl != null) {
                      cl.clearFolderLeaveBehind();
                      // Remove the ImageView copy of the FolderIcon and make the original visible.
                      mDragLayer.removeView(mFolderIconImageView);
                      fi.setVisibility(View.VISIBLE);
                  }
              }
          });
          oa.start();
      }
  
      /**
       * Opens the user folder described by the specified tag. The opening of the folder
       * is animated relative to the specified View. If the View is null, no animation
       * is played.
       *
       * @param folderInfo The FolderInfo describing the folder to open.
       */
      public void openFolder(FolderIcon folderIcon) {
          Folder folder = folderIcon.getFolder();
          FolderInfo info = folder.mInfo;
  
          info.opened = true;
  
          // Just verify that the folder hasn't already been added to the DragLayer.
          // There was a one-off crash where the folder had a parent already.
          if (folder.getParent() == null) {
              mDragLayer.addView(folder);
              mDragController.addDropTarget((DropTarget) folder);
          } else {
              Log.w(TAG, "Opening folder (" + folder + ") which already has a parent (" +
                      folder.getParent() + ").");
          }
          folder.animateOpen();
          growAndFadeOutFolderIcon(folderIcon);
  
          // Notify the accessibility manager that this folder "window" has appeared and occluded
          // the workspace items
          folder.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
          getDragLayer().sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
      }
  
      public void closeFolder() {
          Folder folder = mWorkspace != null ? mWorkspace.getOpenFolder() : null;
          if (folder != null) {
              if (folder.isEditingName()) {
                  folder.dismissEditingName();
              }
              closeFolder(folder);
          }
      }
  
      void closeFolder(Folder folder) {
          folder.getInfo().opened = false;
  
          ViewGroup parent = (ViewGroup) folder.getParent().getParent();
          if (parent != null) {
              FolderIcon fi = (FolderIcon) mWorkspace.getViewForTag(folder.mInfo);
              shrinkAndFadeInFolderIcon(fi);
          }
          folder.animateClosed();
  
          // Notify the accessibility manager that this folder "window" has disappeard and no
          // longer occludeds the workspace items
          getDragLayer().sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
      }
  
      public boolean onLongClick(View v) {
          if (!isDraggingEnabled()) return false;
          if (isWorkspaceLocked()) return false;
          if (mState != State.WORKSPACE) return false;
  
          if (v instanceof Workspace) {
              if (!mWorkspace.isInOverviewMode()) {
                  if (mWorkspace.enterOverviewMode()) {
                      mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
                              HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
                      return true;
                  } else {
                      return false;
                  }
              } else {
                  return false;
              }
          }
  
          CellLayout.CellInfo longClickCellInfo = null;
          View itemUnderLongClick = null;
          if (v.getTag() instanceof ItemInfo) {
              ItemInfo info = (ItemInfo) v.getTag();
              longClickCellInfo = new CellLayout.CellInfo(v, info);;
              itemUnderLongClick = longClickCellInfo.cell;
              resetAddInfo();
          }
  
          // The hotseat touch handling does not go through Workspace, and we always allow long press
          // on hotseat items.
          final boolean inHotseat = isHotseatLayout(v);
          boolean allowLongPress = inHotseat || mWorkspace.allowLongPress();
          if (allowLongPress && !mDragController.isDragging()) {
              if (itemUnderLongClick == null) {
                  // User long pressed on empty space
                  mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
                          HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
                  if (mWorkspace.isInOverviewMode()) {
                      mWorkspace.startReordering(v);
                  } else {
                      mWorkspace.enterOverviewMode();
                  }
              } else {
                  final boolean isAllAppsButton = inHotseat && isAllAppsButtonRank(
                          mHotseat.getOrderInHotseat(
                                  longClickCellInfo.cellX,
                                  longClickCellInfo.cellY));
                  if (!(itemUnderLongClick instanceof Folder || isAllAppsButton)) {
                      // User long pressed on an item
                      mWorkspace.startDrag(longClickCellInfo);
                  }
              }
          }
          return true;
      }
  
      boolean isHotseatLayout(View layout) {
          return mHotseat != null && layout != null &&
                  (layout instanceof CellLayout) && (layout == mHotseat.getLayout());
      }
  
      /**
       * Returns the CellLayout of the specified container at the specified screen.
       */
      CellLayout getCellLayout(long container, long screenId) {
          if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
              if (mHotseat != null) {
                  return mHotseat.getLayout();
              } else {
                  return null;
              }
          } else {
              return (CellLayout) mWorkspace.getScreenWithId(screenId);
          }
      }
  
      public boolean isAllAppsVisible() {
          return (mState == State.APPS_CUSTOMIZE) || (mOnResumeState == State.APPS_CUSTOMIZE);
      }
  
      private void setWorkspaceBackground(boolean workspace) {
          mLauncherView.setBackground(workspace ?
                  mWorkspaceBackgroundDrawable : null);
      }
  
      protected void changeWallpaperVisiblity(boolean visible) {
          int wpflags = visible ? WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER : 0;
          int curflags = getWindow().getAttributes().flags
                  & WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
          if (wpflags != curflags) {
              getWindow().setFlags(wpflags, WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER);
          }
          setWorkspaceBackground(visible);
      }
  
      private void dispatchOnLauncherTransitionPrepare(View v, boolean animated, boolean toWorkspace) {
          if (v instanceof LauncherTransitionable) {
              ((LauncherTransitionable) v).onLauncherTransitionPrepare(this, animated, toWorkspace);
          }
      }
  
      private void dispatchOnLauncherTransitionStart(View v, boolean animated, boolean toWorkspace) {
          if (v instanceof LauncherTransitionable) {
              ((LauncherTransitionable) v).onLauncherTransitionStart(this, animated, toWorkspace);
          }
  
          // Update the workspace transition step as well
          dispatchOnLauncherTransitionStep(v, 0f);
      }
  
      private void dispatchOnLauncherTransitionStep(View v, float t) {
          if (v instanceof LauncherTransitionable) {
              ((LauncherTransitionable) v).onLauncherTransitionStep(this, t);
          }
      }
  
      private void dispatchOnLauncherTransitionEnd(View v, boolean animated, boolean toWorkspace) {
          if (v instanceof LauncherTransitionable) {
              ((LauncherTransitionable) v).onLauncherTransitionEnd(this, animated, toWorkspace);
          }
  
          // Update the workspace transition step as well
          dispatchOnLauncherTransitionStep(v, 1f);
      }
  
      /**
       * Things to test when changing the following seven functions.
       *   - Home from workspace
       *          - from center screen
       *          - from other screens
       *   - Home from all apps
       *          - from center screen
       *          - from other screens
       *   - Back from all apps
       *          - from center screen
       *          - from other screens
       *   - Launch app from workspace and quit
       *          - with back
       *          - with home
       *   - Launch app from all apps and quit
       *          - with back
       *          - with home
       *   - Go to a screen that's not the default, then all
       *     apps, and launch and app, and go back
       *          - with back
       *          -with home
       *   - On workspace, long press power and go back
       *          - with back
       *          - with home
       *   - On all apps, long press power and go back
       *          - with back
       *          - with home
       *   - On workspace, power off
       *   - On all apps, power off
       *   - Launch an app and turn off the screen while in that app
       *          - Go back with home key
       *          - Go back with back key  TODO: make this not go to workspace
       *          - From all apps
       *          - From workspace
       *   - Enter and exit car mode (becuase it causes an extra configuration changed)
       *          - From all apps
       *          - From the center workspace
       *          - From another workspace
       */
  
      /**
       * Zoom the camera out from the workspace to reveal 'toView'.
       * Assumes that the view to show is anchored at either the very top or very bottom
       * of the screen.
       */
      private void showAppsCustomizeHelper(final boolean animated, final boolean springLoaded) {
          AppsCustomizePagedView.ContentType contentType = mAppsCustomizeContent.getContentType();
          showAppsCustomizeHelper(animated, springLoaded, contentType);
      }
  
      private void showAppsCustomizeHelper(final boolean animated, final boolean springLoaded,
                                           final AppsCustomizePagedView.ContentType contentType) {
          if (mStateAnimation != null) {
              mStateAnimation.setDuration(0);
              mStateAnimation.cancel();
              mStateAnimation = null;
          }
  
          boolean material = Utilities.isLmpOrAbove();
  
          final Resources res = getResources();
  
          final int duration = res.getInteger(R.integer.config_appsCustomizeZoomInTime);
          final int fadeDuration = res.getInteger(R.integer.config_appsCustomizeFadeInTime);
          final int revealDuration = res.getInteger(R.integer.config_appsCustomizeRevealTime);
          final int itemsAlphaStagger =
                  res.getInteger(R.integer.config_appsCustomizeItemsAlphaStagger);
  
          final float scale = (float) res.getInteger(R.integer.config_appsCustomizeZoomScaleFactor);
          final View fromView = mWorkspace;
          final AppsCustomizeTabHost toView = mAppsCustomizeTabHost;
  
          final ArrayList<View> layerViews = new ArrayList<View>();
  
          Workspace.State workspaceState = contentType == AppsCustomizePagedView.ContentType.Widgets ?
                  Workspace.State.OVERVIEW_HIDDEN : Workspace.State.NORMAL_HIDDEN;
          Animator workspaceAnim =
                  mWorkspace.getChangeStateAnimation(workspaceState, animated, layerViews);
          if (!LauncherAppState.isDisableAllApps()
                  || contentType == AppsCustomizePagedView.ContentType.Widgets) {
              // Set the content type for the all apps/widgets space
              mAppsCustomizeTabHost.setContentTypeImmediate(contentType);
          }
  
          // If for some reason our views aren't initialized, don't animate
          boolean initialized = getAllAppsButton() != null;
  
          if (animated && initialized) {
              mStateAnimation = LauncherAnimUtils.createAnimatorSet();
              final AppsCustomizePagedView content = (AppsCustomizePagedView)
                      toView.findViewById(R.id.apps_customize_pane_content);
  
              final View page = content.getPageAt(content.getCurrentPage());
              final View revealView = toView.findViewById(R.id.fake_page);
  
              final boolean isWidgetTray = contentType == AppsCustomizePagedView.ContentType.Widgets;
              if (isWidgetTray) {
                  revealView.setBackground(res.getDrawable(R.drawable.quantum_panel_dark));
              } else {
                  revealView.setBackground(res.getDrawable(R.drawable.quantum_panel));
              }
  
              // Hide the real page background, and swap in the fake one
              content.setPageBackgroundsVisible(false);
              revealView.setVisibility(View.VISIBLE);
              // We need to hide this view as the animation start will be posted.
              revealView.setAlpha(0);
  
              int width = revealView.getMeasuredWidth();
              int height = revealView.getMeasuredHeight();
              float revealRadius = (float) Math.sqrt((width * width) / 4 + (height * height) / 4);
  
              revealView.setTranslationY(0);
              revealView.setTranslationX(0);
  
              // Get the y delta between the center of the page and the center of the all apps button
              int[] allAppsToPanelDelta = Utilities.getCenterDeltaInScreenSpace(revealView,
                      getAllAppsButton(), null);
  
              float alpha = 0;
              float xDrift = 0;
              float yDrift = 0;
              if (material) {
                  alpha = isWidgetTray ? 0.3f : 1f;
                  yDrift = isWidgetTray ? height / 2 : allAppsToPanelDelta[1];
                  xDrift = isWidgetTray ? 0 : allAppsToPanelDelta[0];
              } else {
                  yDrift = 2 * height / 3;
                  xDrift = 0;
              }
              final float initAlpha = alpha;
  
              revealView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
              layerViews.add(revealView);
              PropertyValuesHolder panelAlpha = PropertyValuesHolder.ofFloat("alpha", initAlpha, 1f);
              PropertyValuesHolder panelDriftY =
                      PropertyValuesHolder.ofFloat("translationY", yDrift, 0);
              PropertyValuesHolder panelDriftX =
                      PropertyValuesHolder.ofFloat("translationX", xDrift, 0);
  
              ObjectAnimator panelAlphaAndDrift = ObjectAnimator.ofPropertyValuesHolder(revealView,
                      panelAlpha, panelDriftY, panelDriftX);
  
              panelAlphaAndDrift.setDuration(revealDuration);
              panelAlphaAndDrift.setInterpolator(new LogDecelerateInterpolator(100, 0));
  
              mStateAnimation.play(panelAlphaAndDrift);
  
              if (page != null) {
                  page.setVisibility(View.VISIBLE);
                  page.setLayerType(View.LAYER_TYPE_HARDWARE, null);
                  layerViews.add(page);
  
                  ObjectAnimator pageDrift = ObjectAnimator.ofFloat(page, "translationY", yDrift, 0);
                  page.setTranslationY(yDrift);
                  pageDrift.setDuration(revealDuration);
                  pageDrift.setInterpolator(new LogDecelerateInterpolator(100, 0));
                  pageDrift.setStartDelay(itemsAlphaStagger);
                  mStateAnimation.play(pageDrift);
  
                  page.setAlpha(0f);
                  ObjectAnimator itemsAlpha = ObjectAnimator.ofFloat(page, "alpha", 0f, 1f);
                  itemsAlpha.setDuration(revealDuration);
                  itemsAlpha.setInterpolator(new AccelerateInterpolator(1.5f));
                  itemsAlpha.setStartDelay(itemsAlphaStagger);
                  mStateAnimation.play(itemsAlpha);
              }
  
              View pageIndicators = toView.findViewById(R.id.apps_customize_page_indicator);
              pageIndicators.setAlpha(0.01f);
              ObjectAnimator indicatorsAlpha =
                      ObjectAnimator.ofFloat(pageIndicators, "alpha", 1f);
              indicatorsAlpha.setDuration(revealDuration);
              mStateAnimation.play(indicatorsAlpha);
  
              if (material) {
                  final View allApps = getAllAppsButton();
                  int allAppsButtonSize = LauncherAppState.getInstance().
                          getDynamicGrid().getDeviceProfile().allAppsButtonVisualSize;
                  float startRadius = isWidgetTray ? 0 : allAppsButtonSize / 2;
                  Animator reveal = ViewAnimationUtils.createCircularReveal(revealView, width / 2,
                                  height / 2, startRadius, revealRadius);
                  reveal.setDuration(revealDuration);
                  reveal.setInterpolator(new LogDecelerateInterpolator(100, 0));
  
                  reveal.addListener(new AnimatorListenerAdapter() {
                      public void onAnimationStart(Animator animation) {
                          if (!isWidgetTray) {
                              allApps.setVisibility(View.INVISIBLE);
                          }
                      }
                      public void onAnimationEnd(Animator animation) {
                          if (!isWidgetTray) {
                              allApps.setVisibility(View.VISIBLE);
                          }
                      }
                  });
                  mStateAnimation.play(reveal);
              }
  
              mStateAnimation.addListener(new AnimatorListenerAdapter() {
                  @Override
                  public void onAnimationEnd(Animator animation) {
                      dispatchOnLauncherTransitionEnd(fromView, animated, false);
                      dispatchOnLauncherTransitionEnd(toView, animated, false);
  
                      revealView.setVisibility(View.INVISIBLE);
                      revealView.setLayerType(View.LAYER_TYPE_NONE, null);
                      if (page != null) {
                          page.setLayerType(View.LAYER_TYPE_NONE, null);
                      }
                      content.setPageBackgroundsVisible(true);
  
                      // Hide the search bar
                      if (mSearchDropTargetBar != null) {
                          mSearchDropTargetBar.hideSearchBar(false);
                      }
  
                      // This can hold unnecessary references to views.
                      mStateAnimation = null;
                  }
  
              });
  
              if (workspaceAnim != null) {
                  mStateAnimation.play(workspaceAnim);
              }
  
              dispatchOnLauncherTransitionPrepare(fromView, animated, false);
              dispatchOnLauncherTransitionPrepare(toView, animated, false);
              final AnimatorSet stateAnimation = mStateAnimation;
              final Runnable startAnimRunnable = new Runnable() {
                  public void run() {
                      // Check that mStateAnimation hasn't changed while
                      // we waited for a layout/draw pass
                      if (mStateAnimation != stateAnimation)
                          return;
                      dispatchOnLauncherTransitionStart(fromView, animated, false);
                      dispatchOnLauncherTransitionStart(toView, animated, false);
  
                      revealView.setAlpha(initAlpha);
                      if (Utilities.isLmpOrAbove()) {
                          for (int i = 0; i < layerViews.size(); i++) {
                              View v = layerViews.get(i);
                              if (v != null) {
                                  if (Utilities.isViewAttachedToWindow(v)) v.buildLayer();
                              }
                          }
                      }
                      mStateAnimation.start();
                  }
              };
              toView.bringToFront();
              toView.setVisibility(View.VISIBLE);
              toView.post(startAnimRunnable);
          } else {
              toView.setTranslationX(0.0f);
              toView.setTranslationY(0.0f);
              toView.setScaleX(1.0f);
              toView.setScaleY(1.0f);
              toView.setVisibility(View.VISIBLE);
              toView.bringToFront();
  
              if (!springLoaded && !LauncherAppState.getInstance().isScreenLarge()) {
                  // Hide the search bar
                  if (mSearchDropTargetBar != null) {
                      mSearchDropTargetBar.hideSearchBar(false);
                  }
              }
              dispatchOnLauncherTransitionPrepare(fromView, animated, false);
              dispatchOnLauncherTransitionStart(fromView, animated, false);
              dispatchOnLauncherTransitionEnd(fromView, animated, false);
              dispatchOnLauncherTransitionPrepare(toView, animated, false);
              dispatchOnLauncherTransitionStart(toView, animated, false);
              dispatchOnLauncherTransitionEnd(toView, animated, false);
          }
      }
  
      /**
       * Zoom the camera back into the workspace, hiding 'fromView'.
       * This is the opposite of showAppsCustomizeHelper.
       * @param animated If true, the transition will be animated.
       */
      private void hideAppsCustomizeHelper(Workspace.State toState, final boolean animated,
              final boolean springLoaded, final Runnable onCompleteRunnable) {
  
          if (mStateAnimation != null) {
              mStateAnimation.setDuration(0);
              mStateAnimation.cancel();
              mStateAnimation = null;
          }
  
          boolean material = Utilities.isLmpOrAbove();
          Resources res = getResources();
  
          final int duration = res.getInteger(R.integer.config_appsCustomizeZoomOutTime);
          final int fadeOutDuration = res.getInteger(R.integer.config_appsCustomizeFadeOutTime);
          final int revealDuration = res.getInteger(R.integer.config_appsCustomizeConcealTime);
          final int itemsAlphaStagger =
                  res.getInteger(R.integer.config_appsCustomizeItemsAlphaStagger);
  
          final float scaleFactor = (float)
                  res.getInteger(R.integer.config_appsCustomizeZoomScaleFactor);
          final View fromView = mAppsCustomizeTabHost;
          final View toView = mWorkspace;
          Animator workspaceAnim = null;
          final ArrayList<View> layerViews = new ArrayList<View>();
  
          if (toState == Workspace.State.NORMAL) {
              workspaceAnim = mWorkspace.getChangeStateAnimation(
                      toState, animated, layerViews);
          } else if (toState == Workspace.State.SPRING_LOADED ||
                  toState == Workspace.State.OVERVIEW) {
              workspaceAnim = mWorkspace.getChangeStateAnimation(
                      toState, animated, layerViews);
          }
  
          // If for some reason our views aren't initialized, don't animate
          boolean initialized = getAllAppsButton() != null;
  
          if (animated && initialized) {
              mStateAnimation = LauncherAnimUtils.createAnimatorSet();
              if (workspaceAnim != null) {
                  mStateAnimation.play(workspaceAnim);
              }
  
              final AppsCustomizePagedView content = (AppsCustomizePagedView)
                      fromView.findViewById(R.id.apps_customize_pane_content);
  
              final View page = content.getPageAt(content.getNextPage());
  
              // We need to hide side pages of the Apps / Widget tray to avoid some ugly edge cases
              int count = content.getChildCount();
              for (int i = 0; i < count; i++) {
                  View child = content.getChildAt(i);
                  if (child != page) {
                      child.setVisibility(View.INVISIBLE);
                  }
              }
              final View revealView = fromView.findViewById(R.id.fake_page);
  
              // hideAppsCustomizeHelper is called in some cases when it is already hidden
              // don't perform all these no-op animations. In particularly, this was causing
              // the all-apps button to pop in and out.
              if (fromView.getVisibility() == View.VISIBLE) {
                  AppsCustomizePagedView.ContentType contentType = content.getContentType();
                  final boolean isWidgetTray =
                          contentType == AppsCustomizePagedView.ContentType.Widgets;
  
                  if (isWidgetTray) {
                      revealView.setBackground(res.getDrawable(R.drawable.quantum_panel_dark));
                  } else {
                      revealView.setBackground(res.getDrawable(R.drawable.quantum_panel));
                  }
  
                  int width = revealView.getMeasuredWidth();
                  int height = revealView.getMeasuredHeight();
                  float revealRadius = (float) Math.sqrt((width * width) / 4 + (height * height) / 4);
  
                  // Hide the real page background, and swap in the fake one
                  revealView.setVisibility(View.VISIBLE);
                  content.setPageBackgroundsVisible(false);
  
                  final View allAppsButton = getAllAppsButton();
                  revealView.setTranslationY(0);
                  int[] allAppsToPanelDelta = Utilities.getCenterDeltaInScreenSpace(revealView,
                          allAppsButton, null);
  
                  float xDrift = 0;
                  float yDrift = 0;
                  if (material) {
                      yDrift = isWidgetTray ? height / 2 : allAppsToPanelDelta[1];
                      xDrift = isWidgetTray ? 0 : allAppsToPanelDelta[0];
                  } else {
                      yDrift = 2 * height / 3;
                      xDrift = 0;
                  }
  
                  revealView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
                  TimeInterpolator decelerateInterpolator = material ?
                          new LogDecelerateInterpolator(100, 0) :
                          new DecelerateInterpolator(1f);
  
                  // The vertical motion of the apps panel should be delayed by one frame
                  // from the conceal animation in order to give the right feel. We correpsondingly
                  // shorten the duration so that the slide and conceal end at the same time.
                  ObjectAnimator panelDriftY = LauncherAnimUtils.ofFloat(revealView, "translationY",
                          0, yDrift);
                  panelDriftY.setDuration(revealDuration - SINGLE_FRAME_DELAY);
                  panelDriftY.setStartDelay(itemsAlphaStagger + SINGLE_FRAME_DELAY);
                  panelDriftY.setInterpolator(decelerateInterpolator);
                  mStateAnimation.play(panelDriftY);
  
                  ObjectAnimator panelDriftX = LauncherAnimUtils.ofFloat(revealView, "translationX",
                          0, xDrift);
                  panelDriftX.setDuration(revealDuration - SINGLE_FRAME_DELAY);
                  panelDriftX.setStartDelay(itemsAlphaStagger + SINGLE_FRAME_DELAY);
                  panelDriftX.setInterpolator(decelerateInterpolator);
                  mStateAnimation.play(panelDriftX);
  
                  if (isWidgetTray || !material) {
                      float finalAlpha = material ? 0.4f : 0f;
                      revealView.setAlpha(1f);
                      ObjectAnimator panelAlpha = LauncherAnimUtils.ofFloat(revealView, "alpha",
                              1f, finalAlpha);
                      panelAlpha.setDuration(material ? revealDuration : 150);
                      panelAlpha.setInterpolator(decelerateInterpolator);
                      panelAlpha.setStartDelay(material ? 0 : itemsAlphaStagger + SINGLE_FRAME_DELAY);
                      mStateAnimation.play(panelAlpha);
                  }
  
                  if (page != null) {
                      page.setLayerType(View.LAYER_TYPE_HARDWARE, null);
  
                      ObjectAnimator pageDrift = LauncherAnimUtils.ofFloat(page, "translationY",
                              0, yDrift);
                      page.setTranslationY(0);
                      pageDrift.setDuration(revealDuration - SINGLE_FRAME_DELAY);
                      pageDrift.setInterpolator(decelerateInterpolator);
                      pageDrift.setStartDelay(itemsAlphaStagger + SINGLE_FRAME_DELAY);
                      mStateAnimation.play(pageDrift);
  
                      page.setAlpha(1f);
                      ObjectAnimator itemsAlpha = LauncherAnimUtils.ofFloat(page, "alpha", 1f, 0f);
                      itemsAlpha.setDuration(100);
                      itemsAlpha.setInterpolator(decelerateInterpolator);
                      mStateAnimation.play(itemsAlpha);
                  }
  
                  View pageIndicators = fromView.findViewById(R.id.apps_customize_page_indicator);
                  pageIndicators.setAlpha(1f);
                  ObjectAnimator indicatorsAlpha =
                          LauncherAnimUtils.ofFloat(pageIndicators, "alpha", 0f);
                  indicatorsAlpha.setDuration(revealDuration);
                  indicatorsAlpha.setInterpolator(new DecelerateInterpolator(1.5f));
                  mStateAnimation.play(indicatorsAlpha);
  
                  width = revealView.getMeasuredWidth();
  
                  if (material) {
                      if (!isWidgetTray) {
                          allAppsButton.setVisibility(View.INVISIBLE);
                      }
                      int allAppsButtonSize = LauncherAppState.getInstance().
                              getDynamicGrid().getDeviceProfile().allAppsButtonVisualSize;
                      float finalRadius = isWidgetTray ? 0 : allAppsButtonSize / 2;
                      Animator reveal =
                              LauncherAnimUtils.createCircularReveal(revealView, width / 2,
                                      height / 2, revealRadius, finalRadius);
                      reveal.setInterpolator(new LogDecelerateInterpolator(100, 0));
                      reveal.setDuration(revealDuration);
                      reveal.setStartDelay(itemsAlphaStagger);
  
                      reveal.addListener(new AnimatorListenerAdapter() {
                          public void onAnimationEnd(Animator animation) {
                              revealView.setVisibility(View.INVISIBLE);
                              if (!isWidgetTray) {
                                  allAppsButton.setVisibility(View.VISIBLE);
                              }
                          }
                      });
  
                      mStateAnimation.play(reveal);
                  }
  
                  dispatchOnLauncherTransitionPrepare(fromView, animated, true);
                  dispatchOnLauncherTransitionPrepare(toView, animated, true);
                  mAppsCustomizeContent.stopScrolling();
              }
  
              mStateAnimation.addListener(new AnimatorListenerAdapter() {
                  @Override
                  public void onAnimationEnd(Animator animation) {
                      fromView.setVisibility(View.GONE);
                      dispatchOnLauncherTransitionEnd(fromView, animated, true);
                      dispatchOnLauncherTransitionEnd(toView, animated, true);
                      if (onCompleteRunnable != null) {
                          onCompleteRunnable.run();
                      }
  
                      revealView.setLayerType(View.LAYER_TYPE_NONE, null);
                      if (page != null) {
                          page.setLayerType(View.LAYER_TYPE_NONE, null);
                      }
                      content.setPageBackgroundsVisible(true);
                      // Unhide side pages
                      int count = content.getChildCount();
                      for (int i = 0; i < count; i++) {
                          View child = content.getChildAt(i);
                          child.setVisibility(View.VISIBLE);
                      }
  
                      // Reset page transforms
                      if (page != null) {
                          page.setTranslationX(0);
                          page.setTranslationY(0);
                          page.setAlpha(1);
                      }
                      content.setCurrentPage(content.getNextPage());
  
                      mAppsCustomizeContent.updateCurrentPageScroll();
  
                      // This can hold unnecessary references to views.
                      mStateAnimation = null;
                  }
              });
  
              final AnimatorSet stateAnimation = mStateAnimation;
              final Runnable startAnimRunnable = new Runnable() {
                  public void run() {
                      // Check that mStateAnimation hasn't changed while
                      // we waited for a layout/draw pass
                      if (mStateAnimation != stateAnimation)
                          return;
                      dispatchOnLauncherTransitionStart(fromView, animated, false);
                      dispatchOnLauncherTransitionStart(toView, animated, false);
  
                      if (Utilities.isLmpOrAbove()) {
                          for (int i = 0; i < layerViews.size(); i++) {
                              View v = layerViews.get(i);
                              if (v != null) {
                                  if (Utilities.isViewAttachedToWindow(v)) v.buildLayer();
                              }
                          }
                      }
                      mStateAnimation.start();
                  }
              };
              fromView.post(startAnimRunnable);
          } else {
              fromView.setVisibility(View.GONE);
              dispatchOnLauncherTransitionPrepare(fromView, animated, true);
              dispatchOnLauncherTransitionStart(fromView, animated, true);
              dispatchOnLauncherTransitionEnd(fromView, animated, true);
              dispatchOnLauncherTransitionPrepare(toView, animated, true);
              dispatchOnLauncherTransitionStart(toView, animated, true);
              dispatchOnLauncherTransitionEnd(toView, animated, true);
          }
      }
  
      @Override
      public void onTrimMemory(int level) {
          super.onTrimMemory(level);
          if (level >= ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
              // The widget preview db can result in holding onto over
              // 3MB of memory for caching which isn't necessary.
              SQLiteDatabase.releaseMemory();
  
              // This clears all widget bitmaps from the widget tray
              if (mAppsCustomizeTabHost != null) {
                  mAppsCustomizeTabHost.trimMemory();
              }
          }
      }
  
      protected void showWorkspace(boolean animated) {
          showWorkspace(animated, null);
      }
  
      protected void showWorkspace() {
          showWorkspace(true);
      }
  
      void showWorkspace(boolean animated, Runnable onCompleteRunnable) {
          if (mState != State.WORKSPACE || mWorkspace.getState() != Workspace.State.NORMAL) {
              boolean wasInSpringLoadedMode = (mState != State.WORKSPACE);
              mWorkspace.setVisibility(View.VISIBLE);
              hideAppsCustomizeHelper(Workspace.State.NORMAL, animated, false, onCompleteRunnable);
  
              // Show the search bar (only animate if we were showing the drop target bar in spring
              // loaded mode)
              if (mSearchDropTargetBar != null) {
                  mSearchDropTargetBar.showSearchBar(animated && wasInSpringLoadedMode);
              }
  
              // Set focus to the AppsCustomize button
              if (mAllAppsButton != null) {
                  mAllAppsButton.requestFocus();
              }
          }
  
          // Change the state *after* we've called all the transition code
          mState = State.WORKSPACE;
  
          // Resume the auto-advance of widgets
          mUserPresent = true;
          updateRunning();
  
          // Send an accessibility event to announce the context change
          getWindow().getDecorView()
                  .sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
  
          onWorkspaceShown(animated);
      }
  
      void showOverviewMode(boolean animated) {
          mWorkspace.setVisibility(View.VISIBLE);
          hideAppsCustomizeHelper(Workspace.State.OVERVIEW, animated, false, null);
          mState = State.WORKSPACE;
          onWorkspaceShown(animated);
      }
  
      public void onWorkspaceShown(boolean animated) {
      }
  
      void showAllApps(boolean animated, AppsCustomizePagedView.ContentType contentType,
                       boolean resetPageToZero) {
          if (mState != State.WORKSPACE) return;
  
          if (resetPageToZero) {
              mAppsCustomizeTabHost.reset();
          }
          showAppsCustomizeHelper(animated, false, contentType);
          mAppsCustomizeTabHost.post(new Runnable() {
              @Override
              public void run() {
                  // We post this in-case the all apps view isn't yet constructed.
                  mAppsCustomizeTabHost.requestFocus();
              }
          });
  
          // Change the state *after* we've called all the transition code
          mState = State.APPS_CUSTOMIZE;
  
          // Pause the auto-advance of widgets until we are out of AllApps
          mUserPresent = false;
          updateRunning();
          closeFolder();
  
          // Send an accessibility event to announce the context change
          getWindow().getDecorView()
                  .sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
      }
  
      void enterSpringLoadedDragMode() {
          if (isAllAppsVisible()) {
              hideAppsCustomizeHelper(Workspace.State.SPRING_LOADED, true, true, null);
              mState = State.APPS_CUSTOMIZE_SPRING_LOADED;
          }
      }
  
      void exitSpringLoadedDragModeDelayed(final boolean successfulDrop, int delay,
              final Runnable onCompleteRunnable) {
          if (mState != State.APPS_CUSTOMIZE_SPRING_LOADED) return;
  
          mHandler.postDelayed(new Runnable() {
              @Override
              public void run() {
                  if (successfulDrop) {
                      // Before we show workspace, hide all apps again because
                      // exitSpringLoadedDragMode made it visible. This is a bit hacky; we should
                      // clean up our state transition functions
                      mAppsCustomizeTabHost.setVisibility(View.GONE);
                      showWorkspace(true, onCompleteRunnable);
                  } else {
                      exitSpringLoadedDragMode();
                  }
              }
          }, delay);
      }
  
      void exitSpringLoadedDragMode() {
          if (mState == State.APPS_CUSTOMIZE_SPRING_LOADED) {
              final boolean animated = true;
              final boolean springLoaded = true;
              showAppsCustomizeHelper(animated, springLoaded);
              mState = State.APPS_CUSTOMIZE;
          }
          // Otherwise, we are not in spring loaded mode, so don't do anything.
      }
  
      void lockAllApps() {
          // TODO
      }
  
      void unlockAllApps() {
          // TODO
      }
  
      protected void disableVoiceButtonProxy(boolean disable) {
          // NO-OP
      }
  
      public View getQsbBar() {
          if (mLauncherCallbacks != null && mLauncherCallbacks.providesSearch()) {
              return mLauncherCallbacks.getQsbBar();
          }
  
          if (mQsb == null) {
              AppWidgetProviderInfo searchProvider = Utilities.getSearchWidgetProvider(this);
              if (searchProvider == null) {
                  return null;
              }
  
              Bundle opts = new Bundle();
              opts.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY,
                      AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX);
  
              SharedPreferences sp = getSharedPreferences(
                      LauncherAppState.getSharedPreferencesKey(), MODE_PRIVATE);
              int widgetId = sp.getInt(QSB_WIDGET_ID, -1);
              AppWidgetProviderInfo widgetInfo = mAppWidgetManager.getAppWidgetInfo(widgetId);
              if (!searchProvider.provider.flattenToString().equals(
                      sp.getString(QSB_WIDGET_PROVIDER, null))
                      || (widgetInfo == null)
                      || !widgetInfo.provider.equals(searchProvider.provider)) {
                  // A valid widget is not already bound.
                  if (widgetId > -1) {
                      mAppWidgetHost.deleteAppWidgetId(widgetId);
                      widgetId = -1;
                  }
  
                  // Try to bind a new widget
                  widgetId = mAppWidgetHost.allocateAppWidgetId();
  
                  if (!AppWidgetManagerCompat.getInstance(this)
                          .bindAppWidgetIdIfAllowed(widgetId, searchProvider, opts)) {
                      mAppWidgetHost.deleteAppWidgetId(widgetId);
                      widgetId = -1;
                  }
  
                  sp.edit()
                      .putInt(QSB_WIDGET_ID, widgetId)
                      .putString(QSB_WIDGET_PROVIDER, searchProvider.provider.flattenToString())
                      .commit();
              }
  
              if (widgetId != -1) {
                  mQsb = mAppWidgetHost.createView(this, widgetId, searchProvider);
                  mQsb.updateAppWidgetOptions(opts);
                  mQsb.setPadding(0, 0, 0, 0);
                  mSearchDropTargetBar.addView(mQsb);
              }
          }
          return mQsb;
      }
  
      @Override
      public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
          final boolean result = super.dispatchPopulateAccessibilityEvent(event);
          final List<CharSequence> text = event.getText();
          text.clear();
          // Populate event with a fake title based on the current state.
          if (mState == State.APPS_CUSTOMIZE) {
              text.add(mAppsCustomizeTabHost.getContentTag());
          } else {
              text.add(getString(R.string.all_apps_home_button_label));
          }
          return result;
      }
  
      /**
       * Receives notifications when system dialogs are to be closed.
       */
      private class CloseSystemDialogsIntentReceiver extends BroadcastReceiver {
          @Override
          public void onReceive(Context context, Intent intent) {
              closeSystemDialogs();
          }
      }
  
      /**
       * Receives notifications whenever the appwidgets are reset.
       */
      private class AppWidgetResetObserver extends ContentObserver {
          public AppWidgetResetObserver() {
              super(new Handler());
          }
  
          @Override
          public void onChange(boolean selfChange) {
              onAppWidgetReset();
          }
      }
  
      /**
       * If the activity is currently paused, signal that we need to run the passed Runnable
       * in onResume.
       *
       * This needs to be called from incoming places where resources might have been loaded
       * while we are paused.  That is becaues the Configuration might be wrong
       * when we're not running, and if it comes back to what it was when we
       * were paused, we are not restarted.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       *
       * @return true if we are currently paused.  The caller might be able to
       * skip some work in that case since we will come back again.
       */
      private boolean waitUntilResume(Runnable run, boolean deletePreviousRunnables) {
          if (mPaused) {
              Log.i(TAG, "Deferring update until onResume");
              if (deletePreviousRunnables) {
                  while (mBindOnResumeCallbacks.remove(run)) {
                  }
              }
              mBindOnResumeCallbacks.add(run);
              return true;
          } else {
              return false;
          }
      }
  
      private boolean waitUntilResume(Runnable run) {
          return waitUntilResume(run, false);
      }
  
      public void addOnResumeCallback(Runnable run) {
          mOnResumeCallbacks.add(run);
      }
  
      /**
       * If the activity is currently paused, signal that we need to re-run the loader
       * in onResume.
       *
       * This needs to be called from incoming places where resources might have been loaded
       * while we are paused.  That is becaues the Configuration might be wrong
       * when we're not running, and if it comes back to what it was when we
       * were paused, we are not restarted.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       *
       * @return true if we are currently paused.  The caller might be able to
       * skip some work in that case since we will come back again.
       */
      public boolean setLoadOnResume() {
          if (mPaused) {
              Log.i(TAG, "setLoadOnResume");
              mOnResumeNeedsLoad = true;
              return true;
          } else {
              return false;
          }
      }
  
      /**
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public int getCurrentWorkspaceScreen() {
          if (mWorkspace != null) {
              return mWorkspace.getCurrentPage();
          } else {
              return SCREEN_COUNT / 2;
          }
      }
  
      /**
       * Refreshes the shortcuts shown on the workspace.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public void startBinding() {
          setWorkspaceLoading(true);
  
          // If we're starting binding all over again, clear any bind calls we'd postponed in
          // the past (see waitUntilResume) -- we don't need them since we're starting binding
          // from scratch again
          mBindOnResumeCallbacks.clear();
  
          // Clear the workspace because it's going to be rebound
          mWorkspace.clearDropTargets();
          mWorkspace.removeAllWorkspaceScreens();
  
          mWidgetsToAdvance.clear();
          if (mHotseat != null) {
              mHotseat.resetLayout();
          }
      }
  
      @Override
      public void bindScreens(ArrayList<Long> orderedScreenIds) {
          bindAddScreens(orderedScreenIds);
  
          // If there are no screens, we need to have an empty screen
          if (orderedScreenIds.size() == 0) {
              mWorkspace.addExtraEmptyScreen();
          }
  
          // Create the custom content page (this call updates mDefaultScreen which calls
          // setCurrentPage() so ensure that all pages are added before calling this).
          if (hasCustomContentToLeft()) {
              mWorkspace.createCustomContentContainer();
              populateCustomContentContainer();
          }
      }
  
      @Override
      public void bindAddScreens(ArrayList<Long> orderedScreenIds) {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - bindAddScreens()", true);
          Launcher.addDumpLog(TAG, "11683562 -   orderedScreenIds: " +
                  TextUtils.join(", ", orderedScreenIds), true);
          int count = orderedScreenIds.size();
          for (int i = 0; i < count; i++) {
              mWorkspace.insertNewWorkspaceScreenBeforeEmptyScreen(orderedScreenIds.get(i));
          }
      }
  
      private boolean shouldShowWeightWatcher() {
          String spKey = LauncherAppState.getSharedPreferencesKey();
          SharedPreferences sp = getSharedPreferences(spKey, Context.MODE_PRIVATE);
          boolean show = sp.getBoolean(SHOW_WEIGHT_WATCHER, SHOW_WEIGHT_WATCHER_DEFAULT);
  
          return show;
      }
  
      private void toggleShowWeightWatcher() {
          String spKey = LauncherAppState.getSharedPreferencesKey();
          SharedPreferences sp = getSharedPreferences(spKey, Context.MODE_PRIVATE);
          boolean show = sp.getBoolean(SHOW_WEIGHT_WATCHER, true);
  
          show = !show;
  
          SharedPreferences.Editor editor = sp.edit();
          editor.putBoolean(SHOW_WEIGHT_WATCHER, show);
          editor.commit();
  
          if (mWeightWatcher != null) {
              mWeightWatcher.setVisibility(show ? View.VISIBLE : View.GONE);
          }
      }
  
      public void bindAppsAdded(final ArrayList<Long> newScreens,
                                final ArrayList<ItemInfo> addNotAnimated,
                                final ArrayList<ItemInfo> addAnimated,
                                final ArrayList<AppInfo> addedApps) {
          Runnable r = new Runnable() {
              public void run() {
                  bindAppsAdded(newScreens, addNotAnimated, addAnimated, addedApps);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
  
          // Add the new screens
          if (newScreens != null) {
              bindAddScreens(newScreens);
          }
  
          // We add the items without animation on non-visible pages, and with
          // animations on the new page (which we will try and snap to).
          if (addNotAnimated != null && !addNotAnimated.isEmpty()) {
              bindItems(addNotAnimated, 0,
                      addNotAnimated.size(), false);
          }
          if (addAnimated != null && !addAnimated.isEmpty()) {
              bindItems(addAnimated, 0,
                      addAnimated.size(), true);
          }
  
          // Remove the extra empty screen
          mWorkspace.removeExtraEmptyScreen(false, false);
  
          if (!LauncherAppState.isDisableAllApps() &&
                  addedApps != null && mAppsCustomizeContent != null) {
              mAppsCustomizeContent.addApps(addedApps);
          }
      }
  
      /**
       * Bind the items start-end from the list.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public void bindItems(final ArrayList<ItemInfo> shortcuts, final int start, final int end,
                            final boolean forceAnimateIcons) {
          Runnable r = new Runnable() {
              public void run() {
                  bindItems(shortcuts, start, end, forceAnimateIcons);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
  
          // Get the list of added shortcuts and intersect them with the set of shortcuts here
          final AnimatorSet anim = LauncherAnimUtils.createAnimatorSet();
          final Collection<Animator> bounceAnims = new ArrayList<Animator>();
          final boolean animateIcons = forceAnimateIcons && canRunNewAppsAnimation();
          Workspace workspace = mWorkspace;
          long newShortcutsScreenId = -1;
          for (int i = start; i < end; i++) {
              final ItemInfo item = shortcuts.get(i);
  
              // Short circuit if we are loading dock items for a configuration which has no dock
              if (item.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT &&
                      mHotseat == null) {
                  continue;
              }
  
              switch (item.itemType) {
                  case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
                  case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
                      ShortcutInfo info = (ShortcutInfo) item;
                      View shortcut = createShortcut(info);
  
                      /*
                       * TODO: FIX collision case
                       */
                      if (item.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
                          CellLayout cl = mWorkspace.getScreenWithId(item.screenId);
                          if (cl != null && cl.isOccupied(item.cellX, item.cellY)) {
                              View v = cl.getChildAt(item.cellX, item.cellY);
                              Object tag = v.getTag();
                              String desc = "Collision while binding workspace item: " + item
                                      + ". Collides with " + tag;
                              if (LauncherAppState.isDogfoodBuild()) {
                                  throw (new RuntimeException(desc));
                              } else {
                                  Log.d(TAG, desc);
                              }
                          }
                      }
  
                      workspace.addInScreenFromBind(shortcut, item.container, item.screenId, item.cellX,
                              item.cellY, 1, 1);
                      if (animateIcons) {
                          // Animate all the applications up now
                          shortcut.setAlpha(0f);
                          shortcut.setScaleX(0f);
                          shortcut.setScaleY(0f);
                          bounceAnims.add(createNewAppBounceAnimation(shortcut, i));
                          newShortcutsScreenId = item.screenId;
                      }
                      break;
                  case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
                      FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, this,
                              (ViewGroup) workspace.getChildAt(workspace.getCurrentPage()),
                              (FolderInfo) item, mIconCache);
                      workspace.addInScreenFromBind(newFolder, item.container, item.screenId, item.cellX,
                              item.cellY, 1, 1);
                      break;
                  default:
                      throw new RuntimeException("Invalid Item Type");
              }
          }
  
          if (animateIcons) {
              // Animate to the correct page
              if (newShortcutsScreenId > -1) {
                  long currentScreenId = mWorkspace.getScreenIdForPageIndex(mWorkspace.getNextPage());
                  final int newScreenIndex = mWorkspace.getPageIndexForScreenId(newShortcutsScreenId);
                  final Runnable startBounceAnimRunnable = new Runnable() {
                      public void run() {
                          anim.playTogether(bounceAnims);
                          anim.start();
                      }
                  };
                  if (newShortcutsScreenId != currentScreenId) {
                      // We post the animation slightly delayed to prevent slowdowns
                      // when we are loading right after we return to launcher.
                      mWorkspace.postDelayed(new Runnable() {
                          public void run() {
                              if (mWorkspace != null) {
                                  mWorkspace.snapToPage(newScreenIndex);
                                  mWorkspace.postDelayed(startBounceAnimRunnable,
                                          NEW_APPS_ANIMATION_DELAY);
                              }
                          }
                      }, NEW_APPS_PAGE_MOVE_DELAY);
                  } else {
                      mWorkspace.postDelayed(startBounceAnimRunnable, NEW_APPS_ANIMATION_DELAY);
                  }
              }
          }
          workspace.requestLayout();
      }
  
      /**
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public void bindFolders(final HashMap<Long, FolderInfo> folders) {
          Runnable r = new Runnable() {
              public void run() {
                  bindFolders(folders);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
          sFolders.clear();
          sFolders.putAll(folders);
      }
  
      /**
       * Add the views for a widget to the workspace.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public void bindAppWidget(final LauncherAppWidgetInfo item) {
          Runnable r = new Runnable() {
              public void run() {
                  bindAppWidget(item);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
  
          final long start = DEBUG_WIDGETS ? SystemClock.uptimeMillis() : 0;
          if (DEBUG_WIDGETS) {
              Log.d(TAG, "bindAppWidget: " + item);
          }
          final Workspace workspace = mWorkspace;
  
          AppWidgetProviderInfo appWidgetInfo;
          if (!mIsSafeModeEnabled
                  && ((item.restoreStatus & LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY) == 0)
                  && ((item.restoreStatus & LauncherAppWidgetInfo.FLAG_ID_NOT_VALID) != 0)) {
  
              appWidgetInfo = mModel.findAppWidgetProviderInfoWithComponent(this, item.providerName);
              if (appWidgetInfo == null) {
                  if (DEBUG_WIDGETS) {
                      Log.d(TAG, "Removing restored widget: id=" + item.appWidgetId
                              + " belongs to component " + item.providerName
                              + ", as the povider is null");
                  }
                  LauncherModel.deleteItemFromDatabase(this, item);
                  return;
              }
              // Note: This assumes that the id remap broadcast is received before this step.
              // If that is not the case, the id remap will be ignored and user may see the
              // click to setup view.
              PendingAddWidgetInfo pendingInfo = new PendingAddWidgetInfo(appWidgetInfo, null, null);
              pendingInfo.spanX = item.spanX;
              pendingInfo.spanY = item.spanY;
              pendingInfo.minSpanX = item.minSpanX;
              pendingInfo.minSpanY = item.minSpanY;
              Bundle options =
                      AppsCustomizePagedView.getDefaultOptionsForWidget(this, pendingInfo);
  
              int newWidgetId = mAppWidgetHost.allocateAppWidgetId();
              boolean success = mAppWidgetManager.bindAppWidgetIdIfAllowed(
                      newWidgetId, appWidgetInfo, options);
  
              // TODO consider showing a permission dialog when the widget is clicked.
              if (!success) {
                  mAppWidgetHost.deleteAppWidgetId(newWidgetId);
                  if (DEBUG_WIDGETS) {
                      Log.d(TAG, "Removing restored widget: id=" + item.appWidgetId
                              + " belongs to component " + item.providerName
                              + ", as the launcher is unable to bing a new widget id");
                  }
                  LauncherModel.deleteItemFromDatabase(this, item);
                  return;
              }
  
              item.appWidgetId = newWidgetId;
  
              // If the widget has a configure activity, it is still needs to set it up, otherwise
              // the widget is ready to go.
              item.restoreStatus = (appWidgetInfo.configure == null)
                      ? LauncherAppWidgetInfo.RESTORE_COMPLETED
                      : LauncherAppWidgetInfo.FLAG_UI_NOT_READY;
  
              LauncherModel.updateItemInDatabase(this, item);
          }
  
          if (!mIsSafeModeEnabled && item.restoreStatus == LauncherAppWidgetInfo.RESTORE_COMPLETED) {
              final int appWidgetId = item.appWidgetId;
              appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
              if (DEBUG_WIDGETS) {
                  Log.d(TAG, "bindAppWidget: id=" + item.appWidgetId + " belongs to component " + appWidgetInfo.provider);
              }
  
              item.hostView = mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
          } else {
              appWidgetInfo = null;
              PendingAppWidgetHostView view = new PendingAppWidgetHostView(this, item,
                      mIsSafeModeEnabled);
              view.updateIcon(mIconCache);
              item.hostView = view;
              item.hostView.updateAppWidget(null);
              item.hostView.setOnClickListener(this);
          }
  
          item.hostView.setTag(item);
          item.onBindAppWidget(this);
  
          workspace.addInScreen(item.hostView, item.container, item.screenId, item.cellX,
                  item.cellY, item.spanX, item.spanY, false);
          addWidgetToAutoAdvanceIfNeeded(item.hostView, appWidgetInfo);
  
          workspace.requestLayout();
  
          if (DEBUG_WIDGETS) {
              Log.d(TAG, "bound widget id="+item.appWidgetId+" in "
                      + (SystemClock.uptimeMillis()-start) + "ms");
          }
      }
  
      /**
       * Restores a pending widget.
       *
       * @param appWidgetId The app widget id
       * @param cellInfo The position on screen where to create the widget.
       */
      private void completeRestoreAppWidget(final int appWidgetId) {
          LauncherAppWidgetHostView view = mWorkspace.getWidgetForAppWidgetId(appWidgetId);
          if ((view == null) || !(view instanceof PendingAppWidgetHostView)) {
              Log.e(TAG, "Widget update called, when the widget no longer exists.");
              return;
          }
  
          LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) view.getTag();
          info.restoreStatus = LauncherAppWidgetInfo.RESTORE_COMPLETED;
  
          mWorkspace.reinflateWidgetsIfNecessary();
          LauncherModel.updateItemInDatabase(this, info);
      }
  
      public void onPageBoundSynchronously(int page) {
          mSynchronouslyBoundPages.add(page);
      }
  
      /**
       * Callback saying that there aren't any more items to bind.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public void finishBindingItems(final boolean upgradePath) {
          Runnable r = new Runnable() {
              public void run() {
                  finishBindingItems(upgradePath);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
          if (mSavedState != null) {
              if (!mWorkspace.hasFocus()) {
                  mWorkspace.getChildAt(mWorkspace.getCurrentPage()).requestFocus();
              }
              mSavedState = null;
          }
  
          mWorkspace.restoreInstanceStateForRemainingPages();
  
          setWorkspaceLoading(false);
          sendLoadingCompleteBroadcastIfNecessary();
  
          // If we received the result of any pending adds while the loader was running (e.g. the
          // widget configuration forced an orientation change), process them now.
          if (sPendingAddItem != null) {
              final long screenId = completeAdd(sPendingAddItem);
  
              // TODO: this moves the user to the page where the pending item was added. Ideally,
              // the screen would be guaranteed to exist after bind, and the page would be set through
              // the workspace restore process.
              mWorkspace.post(new Runnable() {
                  @Override
                  public void run() {
                      mWorkspace.snapToScreenId(screenId);
                  }
              });
              sPendingAddItem = null;
          }
  
          if (upgradePath) {
              mWorkspace.getUniqueComponents(true, null);
              mIntentsOnWorkspaceFromUpgradePath = mWorkspace.getUniqueComponents(true, null);
          }
          PackageInstallerCompat.getInstance(this).onFinishBind();
  
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.finishBindingItems(upgradePath);
          }
      }
  
      private void sendLoadingCompleteBroadcastIfNecessary() {
          if (!mSharedPrefs.getBoolean(FIRST_LOAD_COMPLETE, false)) {
              String permission =
                      getResources().getString(R.string.receive_first_load_broadcast_permission);
              Intent intent = new Intent(ACTION_FIRST_LOAD_COMPLETE);
              sendBroadcast(intent, permission);
              SharedPreferences.Editor editor = mSharedPrefs.edit();
              editor.putBoolean(FIRST_LOAD_COMPLETE, true);
              editor.apply();
          }
      }
  
      public boolean isAllAppsButtonRank(int rank) {
          if (mHotseat != null) {
              return mHotseat.isAllAppsButtonRank(rank);
          }
          return false;
      }
  
      private boolean canRunNewAppsAnimation() {
          long diff = System.currentTimeMillis() - mDragController.getLastGestureUpTime();
          return diff > (NEW_APPS_ANIMATION_INACTIVE_TIMEOUT_SECONDS * 1000);
      }
  
      private ValueAnimator createNewAppBounceAnimation(View v, int i) {
          ValueAnimator bounceAnim = LauncherAnimUtils.ofPropertyValuesHolder(v,
                  PropertyValuesHolder.ofFloat("alpha", 1f),
                  PropertyValuesHolder.ofFloat("scaleX", 1f),
                  PropertyValuesHolder.ofFloat("scaleY", 1f));
          bounceAnim.setDuration(InstallShortcutReceiver.NEW_SHORTCUT_BOUNCE_DURATION);
          bounceAnim.setStartDelay(i * InstallShortcutReceiver.NEW_SHORTCUT_STAGGER_DELAY);
          bounceAnim.setInterpolator(new SmoothPagedView.OvershootInterpolator());
          return bounceAnim;
      }
  
      public boolean useVerticalBarLayout() {
          return LauncherAppState.getInstance().getDynamicGrid().
                  getDeviceProfile().isVerticalBarLayout();
      }
  
      protected Rect getSearchBarBounds() {
          return LauncherAppState.getInstance().getDynamicGrid().
                  getDeviceProfile().getSearchBarBounds();
      }
  
      public void bindSearchablesChanged() {
          if (mSearchDropTargetBar == null) {
              return;
          }
          if (mQsb != null) {
              mSearchDropTargetBar.removeView(mQsb);
              mQsb = null;
          }
          mSearchDropTargetBar.setQsbSearchBar(getQsbBar());
      }
  
      /**
       * Add the icons for all apps.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public void bindAllApplications(final ArrayList<AppInfo> apps) {
          if (LauncherAppState.isDisableAllApps()) {
              if (mIntentsOnWorkspaceFromUpgradePath != null) {
                  if (LauncherModel.UPGRADE_USE_MORE_APPS_FOLDER) {
                      getHotseat().addAllAppsFolder(mIconCache, apps,
                              mIntentsOnWorkspaceFromUpgradePath, Launcher.this, mWorkspace);
                  }
                  mIntentsOnWorkspaceFromUpgradePath = null;
              }
              if (mAppsCustomizeContent != null) {
                  mAppsCustomizeContent.onPackagesUpdated(
                          LauncherModel.getSortedWidgetsAndShortcuts(this));
              }
          } else {
              if (mAppsCustomizeContent != null) {
                  mAppsCustomizeContent.setApps(apps);
                  mAppsCustomizeContent.onPackagesUpdated(
                          LauncherModel.getSortedWidgetsAndShortcuts(this));
              }
          }
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.bindAllApplications(apps);
          }
      }
  
      /**
       * A package was updated.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      public void bindAppsUpdated(final ArrayList<AppInfo> apps) {
          Runnable r = new Runnable() {
              public void run() {
                  bindAppsUpdated(apps);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
  
          if (!LauncherAppState.isDisableAllApps() &&
                  mAppsCustomizeContent != null) {
              mAppsCustomizeContent.updateApps(apps);
          }
      }
  
      @Override
      public void bindWidgetsRestored(final ArrayList<LauncherAppWidgetInfo> widgets) {
          Runnable r = new Runnable() {
              public void run() {
                  bindWidgetsRestored(widgets);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
          mWorkspace.widgetsRestored(widgets);
      }
  
      /**
       * Some shortcuts were updated in the background.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      @Override
      public void bindShortcutsChanged(final ArrayList<ShortcutInfo> updated,
              final ArrayList<ShortcutInfo> removed, final UserHandleCompat user) {
          Runnable r = new Runnable() {
              public void run() {
                  bindShortcutsChanged(updated, removed, user);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
  
          if (!updated.isEmpty()) {
              mWorkspace.updateShortcuts(updated);
          }
  
          if (!removed.isEmpty()) {
              HashSet<ComponentName> removedComponents = new HashSet<ComponentName>();
              for (ShortcutInfo si : removed) {
                  removedComponents.add(si.getTargetComponent());
              }
              mWorkspace.removeItemsByComponentName(removedComponents, user);
              // Notify the drag controller
              mDragController.onAppsRemoved(new ArrayList<String>(), removedComponents);
          }
      }
  
      /**
       * Update the state of a package, typically related to install state.
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      @Override
      public void updatePackageState(ArrayList<PackageInstallInfo> installInfo) {
          if (mWorkspace != null) {
              mWorkspace.updatePackageState(installInfo);
          }
      }
  
      /**
       * Update the label and icon of all the icons in a package
       *
       * Implementation of the method from LauncherModel.Callbacks.
       */
      @Override
      public void updatePackageBadge(String packageName) {
          if (mWorkspace != null) {
              mWorkspace.updatePackageBadge(packageName, UserHandleCompat.myUserHandle());
          }
      }
  
      /**
       * A package was uninstalled.  We take both the super set of packageNames
       * in addition to specific applications to remove, the reason being that
       * this can be called when a package is updated as well.  In that scenario,
       * we only remove specific components from the workspace, where as
       * package-removal should clear all items by package name.
       *
       * @param reason if non-zero, the icons are not permanently removed, rather marked as disabled.
       * Implementation of the method from LauncherModel.Callbacks.
       */
      @Override
      public void bindComponentsRemoved(final ArrayList<String> packageNames,
              final ArrayList<AppInfo> appInfos, final UserHandleCompat user, final int reason) {
          Runnable r = new Runnable() {
              public void run() {
                  bindComponentsRemoved(packageNames, appInfos, user, reason);
              }
          };
          if (waitUntilResume(r)) {
              return;
          }
  
          if (reason == 0) {
              HashSet<ComponentName> removedComponents = new HashSet<ComponentName>();
              for (AppInfo info : appInfos) {
                  removedComponents.add(info.componentName);
              }
              if (!packageNames.isEmpty()) {
                  mWorkspace.removeItemsByPackageName(packageNames, user);
              }
              if (!removedComponents.isEmpty()) {
                  mWorkspace.removeItemsByComponentName(removedComponents, user);
              }
              // Notify the drag controller
              mDragController.onAppsRemoved(packageNames, removedComponents);
  
          } else {
              mWorkspace.disableShortcutsByPackageName(packageNames, user, reason);
          }
  
          // Update AllApps
          if (!LauncherAppState.isDisableAllApps() &&
                  mAppsCustomizeContent != null) {
              mAppsCustomizeContent.removeApps(appInfos);
          }
      }
  
      /**
       * A number of packages were updated.
       */
      private ArrayList<Object> mWidgetsAndShortcuts;
      private Runnable mBindPackagesUpdatedRunnable = new Runnable() {
              public void run() {
                  bindPackagesUpdated(mWidgetsAndShortcuts);
                  mWidgetsAndShortcuts = null;
              }
          };
      public void bindPackagesUpdated(final ArrayList<Object> widgetsAndShortcuts) {
          if (waitUntilResume(mBindPackagesUpdatedRunnable, true)) {
              mWidgetsAndShortcuts = widgetsAndShortcuts;
              return;
          }
  
          // Update the widgets pane
          if (mAppsCustomizeContent != null) {
              mAppsCustomizeContent.onPackagesUpdated(widgetsAndShortcuts);
          }
      }
  
      private int mapConfigurationOriActivityInfoOri(int configOri) {
          final Display d = getWindowManager().getDefaultDisplay();
          int naturalOri = Configuration.ORIENTATION_LANDSCAPE;
          switch (d.getRotation()) {
          case Surface.ROTATION_0:
          case Surface.ROTATION_180:
              // We are currently in the same basic orientation as the natural orientation
              naturalOri = configOri;
              break;
          case Surface.ROTATION_90:
          case Surface.ROTATION_270:
              // We are currently in the other basic orientation to the natural orientation
              naturalOri = (configOri == Configuration.ORIENTATION_LANDSCAPE) ?
                      Configuration.ORIENTATION_PORTRAIT : Configuration.ORIENTATION_LANDSCAPE;
              break;
          }
  
          int[] oriMap = {
                  ActivityInfo.SCREEN_ORIENTATION_PORTRAIT,
                  ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE,
                  ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT,
                  ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE
          };
          // Since the map starts at portrait, we need to offset if this device's natural orientation
          // is landscape.
          int indexOffset = 0;
          if (naturalOri == Configuration.ORIENTATION_LANDSCAPE) {
              indexOffset = 1;
          }
          return oriMap[(d.getRotation() + indexOffset) % 4];
      }
  
      public void lockScreenOrientation() {
          if (Utilities.isRotationEnabled(this)) {
              setRequestedOrientation(mapConfigurationOriActivityInfoOri(getResources()
                      .getConfiguration().orientation));
          }
      }
      public void unlockScreenOrientation(boolean immediate) {
          if (Utilities.isRotationEnabled(this)) {
              if (immediate) {
                  setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
              } else {
                  mHandler.postDelayed(new Runnable() {
                      public void run() {
                          setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
                      }
                  }, mRestoreScreenOrientationDelay);
              }
          }
      }
  
      protected boolean isLauncherPreinstalled() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.isLauncherPreinstalled();
          }
          PackageManager pm = getPackageManager();
          try {
              ApplicationInfo ai = pm.getApplicationInfo(getComponentName().getPackageName(), 0);
              if ((ai.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
                  return true;
              } else {
                  return false;
              }
          } catch (NameNotFoundException e) {
              e.printStackTrace();
              return false;
          }
      }
  
      /**
       * This method indicates whether or not we should suggest default wallpaper dimensions
       * when our wallpaper cropper was not yet used to set a wallpaper.
       */
      protected boolean overrideWallpaperDimensions() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.overrideWallpaperDimensions();
          }
          return true;
      }
  
      /**
       * To be overridden by subclasses to indicate that there is an activity to launch
       * before showing the standard launcher experience.
       */
      protected boolean hasFirstRunActivity() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.hasFirstRunActivity();
          }
          return false;
      }
  
      /**
       * To be overridden by subclasses to launch any first run activity
       */
      protected Intent getFirstRunActivity() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.getFirstRunActivity();
          }
          return null;
      }
  
      private boolean shouldRunFirstRunActivity() {
          return !ActivityManager.isRunningInTestHarness() &&
                  !mSharedPrefs.getBoolean(FIRST_RUN_ACTIVITY_DISPLAYED, false);
      }
  
      protected boolean hasRunFirstRunActivity() {
          return mSharedPrefs.getBoolean(FIRST_RUN_ACTIVITY_DISPLAYED, false);
      }
  
      public boolean showFirstRunActivity() {
          if (shouldRunFirstRunActivity() &&
                  hasFirstRunActivity()) {
              Intent firstRunIntent = getFirstRunActivity();
              if (firstRunIntent != null) {
                  startActivity(firstRunIntent);
                  markFirstRunActivityShown();
                  return true;
              }
          }
          return false;
      }
  
      private void markFirstRunActivityShown() {
          SharedPreferences.Editor editor = mSharedPrefs.edit();
          editor.putBoolean(FIRST_RUN_ACTIVITY_DISPLAYED, true);
          editor.apply();
      }
  
      /**
       * To be overridden by subclasses to indicate that there is an in-activity full-screen intro
       * screen that must be displayed and dismissed.
       */
      protected boolean hasDismissableIntroScreen() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.hasDismissableIntroScreen();
          }
          return false;
      }
  
      /**
       * Full screen intro screen to be shown and dismissed before the launcher can be used.
       */
      protected View getIntroScreen() {
          if (mLauncherCallbacks != null) {
              return mLauncherCallbacks.getIntroScreen();
          }
          return null;
      }
  
      /**
       * To be overriden by subclasses to indicate whether the in-activity intro screen has been
       * dismissed. This method is ignored if #hasDismissableIntroScreen returns false.
       */
      private boolean shouldShowIntroScreen() {
          return hasDismissableIntroScreen() &&
                  !mSharedPrefs.getBoolean(INTRO_SCREEN_DISMISSED, false);
      }
  
      protected void showIntroScreen() {
          View introScreen = getIntroScreen();
          changeWallpaperVisiblity(false);
          if (introScreen != null) {
              mDragLayer.showOverlayView(introScreen);
          }
          if (mLauncherOverlayContainer != null) {
              mLauncherOverlayContainer.setVisibility(View.INVISIBLE);
          }
      }
  
      public void dismissIntroScreen() {
          markIntroScreenDismissed();
          if (showFirstRunActivity()) {
              // We delay hiding the intro view until the first run activity is showing. This
              // avoids a blip.
              mWorkspace.postDelayed(new Runnable() {
                  @Override
                  public void run() {
                      mDragLayer.dismissOverlayView();
                      if (mLauncherOverlayContainer != null) {
                          mLauncherOverlayContainer.setVisibility(View.VISIBLE);
                      }
                      showFirstRunClings();
                  }
              }, ACTIVITY_START_DELAY);
          } else {
              mDragLayer.dismissOverlayView();
              if (mLauncherOverlayContainer != null) {
                  mLauncherOverlayContainer.setVisibility(View.VISIBLE);
              }
              showFirstRunClings();
          }
          changeWallpaperVisiblity(true);
      }
  
      private void markIntroScreenDismissed() {
          SharedPreferences.Editor editor = mSharedPrefs.edit();
          editor.putBoolean(INTRO_SCREEN_DISMISSED, true);
          editor.apply();
      }
  
      private void showFirstRunClings() {
          // The two first run cling paths are mutually exclusive, if the launcher is preinstalled
          // on the device, then we always show the first run cling experience (or if there is no
          // launcher2). Otherwise, we prompt the user upon started for migration
          LauncherClings launcherClings = new LauncherClings(this);
          if (launcherClings.shouldShowFirstRunOrMigrationClings()) {
              if (mModel.canMigrateFromOldLauncherDb(this)) {
                  launcherClings.showMigrationCling();
              } else {
                  launcherClings.showLongPressCling(true);
              }
          }
      }
  
      void showWorkspaceSearchAndHotseat() {
          if (mWorkspace != null) mWorkspace.setAlpha(1f);
          if (mHotseat != null) mHotseat.setAlpha(1f);
          if (mPageIndicators != null) mPageIndicators.setAlpha(1f);
          if (mSearchDropTargetBar != null) mSearchDropTargetBar.showSearchBar(false);
      }
  
      void hideWorkspaceSearchAndHotseat() {
          if (mWorkspace != null) mWorkspace.setAlpha(0f);
          if (mHotseat != null) mHotseat.setAlpha(0f);
          if (mPageIndicators != null) mPageIndicators.setAlpha(0f);
          if (mSearchDropTargetBar != null) mSearchDropTargetBar.hideSearchBar(false);
      }
  
      public ItemInfo createAppDragInfo(Intent appLaunchIntent) {
          // Called from search suggestion, not supported in other profiles.
          final UserHandleCompat myUser = UserHandleCompat.myUserHandle();
          LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
          LauncherActivityInfoCompat activityInfo = launcherApps.resolveActivity(appLaunchIntent,
                  myUser);
          if (activityInfo == null) {
              return null;
          }
          return new AppInfo(this, activityInfo, myUser, mIconCache, null);
      }
  
      public ItemInfo createShortcutDragInfo(Intent shortcutIntent, CharSequence caption,
              Bitmap icon) {
          // Called from search suggestion, not supported in other profiles.
          return createShortcutDragInfo(shortcutIntent, caption, icon,
                  UserHandleCompat.myUserHandle());
      }
  
      public ItemInfo createShortcutDragInfo(Intent shortcutIntent, CharSequence caption,
              Bitmap icon, UserHandleCompat user) {
          UserManagerCompat userManager = UserManagerCompat.getInstance(this);
          CharSequence contentDescription = userManager.getBadgedLabelForUser(caption, user);
          return new ShortcutInfo(shortcutIntent, caption, contentDescription, icon, user);
      }
  
      protected void moveWorkspaceToDefaultScreen() {
          mWorkspace.moveToDefaultScreen(false);
      }
  
      public void startDrag(View dragView, ItemInfo dragInfo, DragSource source) {
          dragView.setTag(dragInfo);
          mWorkspace.onExternalDragStartedWithItem(dragView);
          mWorkspace.beginExternalDragShared(dragView, source);
      }
  
      @Override
      public void onPageSwitch(View newPage, int newPageIndex) {
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.onPageSwitch(newPage, newPageIndex);
          }
      }
  
      /**
       * Prints out out state for debugging.
       */
      public void dumpState() {
          Log.d(TAG, "BEGIN LB-Launcher dump state for launcher " + this);
          Log.d(TAG, "mSavedState=" + mSavedState);
          Log.d(TAG, "mWorkspaceLoading=" + mWorkspaceLoading);
          Log.d(TAG, "mRestoring=" + mRestoring);
          Log.d(TAG, "mWaitingForResult=" + mWaitingForResult);
          Log.d(TAG, "mSavedInstanceState=" + mSavedInstanceState);
          Log.d(TAG, "sFolders.size=" + sFolders.size());
          mModel.dumpState();
  
          if (mAppsCustomizeContent != null) {
              mAppsCustomizeContent.dumpState();
          }
          Log.d(TAG, "END LB-Launcher dump state");
      }
  
      @Override
      public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) {
          super.dump(prefix, fd, writer, args);
          synchronized (sDumpLogs) {
              writer.println(" ");
              writer.println("Debug logs: ");
              for (int i = 0; i < sDumpLogs.size(); i++) {
                  writer.println("  " + sDumpLogs.get(i));
              }
          }
          if (mLauncherCallbacks != null) {
              mLauncherCallbacks.dump(prefix, fd, writer, args);
          }
      }
  
      public static void dumpDebugLogsToConsole() {
          if (DEBUG_DUMP_LOG) {
              synchronized (sDumpLogs) {
                  Log.d(TAG, "");
                  Log.d(TAG, "*********************");
                  Log.d(TAG, "Launcher debug logs: ");
                  for (int i = 0; i < sDumpLogs.size(); i++) {
                      Log.d(TAG, "  " + sDumpLogs.get(i));
                  }
                  Log.d(TAG, "*********************");
                  Log.d(TAG, "");
              }
          }
      }
  
      public static void addDumpLog(String tag, String log, boolean debugLog) {
          addDumpLog(tag, log, null, debugLog);
      }
  
      public static void addDumpLog(String tag, String log, Exception e, boolean debugLog) {
          if (debugLog) {
              if (e != null) {
                  Log.d(tag, log, e);
              } else {
                  Log.d(tag, log);
              }
          }
          if (DEBUG_DUMP_LOG) {
              sDateStamp.setTime(System.currentTimeMillis());
              synchronized (sDumpLogs) {
                  sDumpLogs.add(sDateFormat.format(sDateStamp) + ": " + tag + ", " + log
                      + (e == null ? "" : (", Exception: " + e)));
              }
          }
      }
  
      public void dumpLogsToLocalData() {
          if (DEBUG_DUMP_LOG) {
              new AsyncTask<Void, Void, Void>() {
                  public Void doInBackground(Void ... args) {
                      boolean success = false;
                      sDateStamp.setTime(sRunStart);
                      String FILENAME = sDateStamp.getMonth() + "-"
                              + sDateStamp.getDay() + "_"
                              + sDateStamp.getHours() + "-"
                              + sDateStamp.getMinutes() + "_"
                              + sDateStamp.getSeconds() + ".txt";
  
                      FileOutputStream fos = null;
                      File outFile = null;
                      try {
                          outFile = new File(getFilesDir(), FILENAME);
                          outFile.createNewFile();
                          fos = new FileOutputStream(outFile);
                      } catch (Exception e) {
                          e.printStackTrace();
                      }
                      if (fos != null) {
                          PrintWriter writer = new PrintWriter(fos);
  
                          writer.println(" ");
                          writer.println("Debug logs: ");
                          synchronized (sDumpLogs) {
                              for (int i = 0; i < sDumpLogs.size(); i++) {
                                  writer.println("  " + sDumpLogs.get(i));
                              }
                          }
                          writer.close();
                      }
                      try {
                          if (fos != null) {
                              fos.close();
                              success = true;
                          }
                      } catch (IOException e) {
                          e.printStackTrace();
                      }
                      return null;
                  }
              }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
          }
      }
  }
  
  interface LauncherTransitionable {
      View getContent();
      void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace);
      void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace);
      void onLauncherTransitionStep(Launcher l, float t);
      void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace);
  }
  
  interface DebugIntents {
      static final String DELETE_DATABASE = "com.lb.launcher.action.DELETE_DATABASE";
      static final String MIGRATE_DATABASE = "com.lb.launcher.action.MIGRATE_DATABASE";
  }
  