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.Animator.AnimatorListener;
  import android.animation.AnimatorListenerAdapter;
  import android.animation.AnimatorSet;
  import android.animation.LayoutTransition;
  import android.animation.ObjectAnimator;
  import android.animation.PropertyValuesHolder;
  import android.animation.TimeInterpolator;
  import android.animation.ValueAnimator;
  import android.animation.ValueAnimator.AnimatorUpdateListener;
  import android.app.WallpaperManager;
  import android.appwidget.AppWidgetHostView;
  import android.appwidget.AppWidgetProviderInfo;
  import android.content.ComponentName;
  import android.content.Context;
  import android.content.Intent;
  import android.content.SharedPreferences;
  import android.content.pm.PackageManager;
  import android.content.pm.ResolveInfo;
  import android.content.res.Resources;
  import android.content.res.TypedArray;
  import android.graphics.Bitmap;
  import android.graphics.Canvas;
  import android.graphics.Matrix;
  import android.graphics.Paint;
  import android.graphics.Point;
  import android.graphics.PointF;
  import android.graphics.Rect;
  import android.graphics.Region.Op;
  import android.graphics.drawable.Drawable;
  import android.net.Uri;
  import android.os.AsyncTask;
  import android.os.Handler;
  import android.os.IBinder;
  import android.os.Parcelable;
  import android.support.v4.view.ViewCompat;
  import android.util.AttributeSet;
  import android.util.Log;
  import android.util.SparseArray;
  import android.view.Choreographer;
  import android.view.Display;
  import android.view.MotionEvent;
  import android.view.View;
  import android.view.ViewGroup;
  import android.view.accessibility.AccessibilityManager;
  import android.view.animation.DecelerateInterpolator;
  import android.view.animation.Interpolator;
  import android.widget.TextView;
  import com.lb.launcher.R;
  import com.lb.launcher.FolderIcon.FolderRingAnimator;
  import com.lb.launcher.Launcher.CustomContentCallbacks;
  import com.lb.launcher.Launcher.LauncherOverlay;
  import com.lb.launcher.LauncherSettings.Favorites;
  import com.lb.launcher.compat.PackageInstallerCompat;
  import com.lb.launcher.compat.UserHandleCompat;
  import com.lb.launcher.compat.PackageInstallerCompat.PackageInstallInfo;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.Map;
  import java.util.Set;
  import java.util.concurrent.atomic.AtomicInteger;
  
  /**
   * The workspace is a wide area with a wallpaper and a finite number of pages.
   * Each page contains a number of icons, folders or widgets the user can
   * interact with. A workspace is meant to be used with a fixed width only.
   */
  public class Workspace extends SmoothPagedView
          implements DropTarget, DragSource, DragScroller, View.OnTouchListener,
          DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener,
          Insettable {
      private static final String TAG = "Launcher.Workspace";
  
      // Y rotation to apply to the workspace screens
      private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f;
  
      private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0;
      private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375;
      private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100;
  
      protected static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400;
      protected static final int FADE_EMPTY_SCREEN_DURATION = 150;
  
      private static final int BACKGROUND_FADE_OUT_DURATION = 350;
      private static final int ADJACENT_SCREEN_DROP_DURATION = 300;
      private static final int FLING_THRESHOLD_VELOCITY = 500;
  
      private static final float ALPHA_CUTOFF_THRESHOLD = 0.01f;
  
      static final boolean MAP_NO_RECURSE = false;
      static final boolean MAP_RECURSE = true;
  
      // These animators are used to fade the children's outlines
      private ObjectAnimator mChildrenOutlineFadeInAnimation;
      private ObjectAnimator mChildrenOutlineFadeOutAnimation;
      private float mChildrenOutlineAlpha = 0;
  
      // These properties refer to the background protection gradient used for AllApps and Customize
      private ValueAnimator mBackgroundFadeInAnimation;
      private ValueAnimator mBackgroundFadeOutAnimation;
  
      private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200;
      private long mTouchDownTime = -1;
      private long mCustomContentShowTime = -1;
  
      private LayoutTransition mLayoutTransition;
      private final WallpaperManager mWallpaperManager;
      private IBinder mWindowToken;
  
      private int mOriginalDefaultPage;
      private int mDefaultPage;
  
      private ShortcutAndWidgetContainer mDragSourceInternal;
      private static boolean sAccessibilityEnabled;
  
      // The screen id used for the empty screen always present to the right.
      final static long EXTRA_EMPTY_SCREEN_ID = -201;
      private final static long CUSTOM_CONTENT_SCREEN_ID = -301;
  
      private HashMap<Long, CellLayout> mWorkspaceScreens = new HashMap<Long, CellLayout>();
      private ArrayList<Long> mScreenOrder = new ArrayList<Long>();
  
      private Runnable mRemoveEmptyScreenRunnable;
      private boolean mDeferRemoveExtraEmptyScreen = false;
  
      /**
       * CellInfo for the cell that is currently being dragged
       */
      private CellLayout.CellInfo mDragInfo;
  
      /**
       * Target drop area calculated during last acceptDrop call.
       */
      private int[] mTargetCell = new int[2];
      private int mDragOverX = -1;
      private int mDragOverY = -1;
  
      static Rect mLandscapeCellLayoutMetrics = null;
      static Rect mPortraitCellLayoutMetrics = null;
  
      CustomContentCallbacks mCustomContentCallbacks;
      boolean mCustomContentShowing;
      private float mLastCustomContentScrollProgress = -1f;
      private String mCustomContentDescription = "";
  
      /**
       * The CellLayout that is currently being dragged over
       */
      private CellLayout mDragTargetLayout = null;
      /**
       * The CellLayout that we will show as glowing
       */
      private CellLayout mDragOverlappingLayout = null;
  
      /**
       * The CellLayout which will be dropped to
       */
      private CellLayout mDropToLayout = null;
  
      private Launcher mLauncher;
      private IconCache mIconCache;
      private DragController mDragController;
  
      // These are temporary variables to prevent having to allocate a new object just to
      // return an (x, y) value from helper functions. Do NOT use them to maintain other state.
      private int[] mTempCell = new int[2];
      private int[] mTempPt = new int[2];
      private int[] mTempEstimate = new int[2];
      private float[] mDragViewVisualCenter = new float[2];
      private float[] mTempCellLayoutCenterCoordinates = new float[2];
      private Matrix mTempInverseMatrix = new Matrix();
  
      private SpringLoadedDragController mSpringLoadedDragController;
      private float mSpringLoadedShrinkFactor;
      private float mOverviewModeShrinkFactor;
  
      // State variable that indicates whether the pages are small (ie when you're
      // in all apps or customize mode)
  
      enum State { NORMAL, NORMAL_HIDDEN, SPRING_LOADED, OVERVIEW, OVERVIEW_HIDDEN};
      private State mState = State.NORMAL;
      private boolean mIsSwitchingState = false;
  
      boolean mAnimatingViewIntoPlace = false;
      boolean mIsDragOccuring = false;
      boolean mChildrenLayersEnabled = true;
  
      private boolean mStripScreensOnPageStopMoving = false;
  
      /** Is the user is dragging an item near the edge of a page? */
      private boolean mInScrollArea = false;
  
      private HolographicOutlineHelper mOutlineHelper;
      private Bitmap mDragOutline = null;
      private static final Rect sTempRect = new Rect();
      private final int[] mTempXY = new int[2];
      private int[] mTempVisiblePagesRange = new int[2];
      private boolean mOverscrollEffectSet;
      public static final int DRAG_BITMAP_PADDING = 2;
      private boolean mWorkspaceFadeInAdjacentScreens;
  
      WallpaperOffsetInterpolator mWallpaperOffset;
      private boolean mWallpaperIsLiveWallpaper;
      private int mNumPagesForWallpaperParallax;
      private float mLastSetWallpaperOffsetSteps = 0;
  
      private Runnable mDelayedResizeRunnable;
      private Runnable mDelayedSnapToPageRunnable;
      private Point mDisplaySize = new Point();
      private int mCameraDistance;
  
      // Variables relating to the creation of user folders by hovering shortcuts over shortcuts
      private static final int FOLDER_CREATION_TIMEOUT = 0;
      public static final int REORDER_TIMEOUT = 350;
      private final Alarm mFolderCreationAlarm = new Alarm();
      private final Alarm mReorderAlarm = new Alarm();
      private FolderRingAnimator mDragFolderRingAnimator = null;
      private FolderIcon mDragOverFolderIcon = null;
      private boolean mCreateUserFolderOnDrop = false;
      private boolean mAddToExistingFolderOnDrop = false;
      private DropTarget.DragEnforcer mDragEnforcer;
      private float mMaxDistanceForFolderCreation;
  
      private final Canvas mCanvas = new Canvas();
  
      // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget)
      private float mXDown;
      private float mYDown;
      final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6;
      final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3;
      final static float TOUCH_SLOP_DAMPING_FACTOR = 4;
  
      // Relating to the animation of items being dropped externally
      public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0;
      public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1;
      public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2;
      public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3;
      public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4;
  
      // Related to dragging, folder creation and reordering
      private static final int DRAG_MODE_NONE = 0;
      private static final int DRAG_MODE_CREATE_FOLDER = 1;
      private static final int DRAG_MODE_ADD_TO_FOLDER = 2;
      private static final int DRAG_MODE_REORDER = 3;
      private int mDragMode = DRAG_MODE_NONE;
      private int mLastReorderX = -1;
      private int mLastReorderY = -1;
  
      private SparseArray<Parcelable> mSavedStates;
      private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>();
  
      // These variables are used for storing the initial and final values during workspace animations
      private int mSavedScrollX;
      private float mSavedRotationY;
      private float mSavedTranslationX;
  
      private float mCurrentScale;
      private float mNewScale;
      private float[] mOldBackgroundAlphas;
      private float[] mOldAlphas;
      private float[] mNewBackgroundAlphas;
      private float[] mNewAlphas;
      private int mLastChildCount = -1;
      private float mTransitionProgress;
      private Animator mStateAnimator = null;
  
      float mOverScrollEffect = 0f;
  
      private Runnable mDeferredAction;
      private boolean mDeferDropAfterUninstall;
      private boolean mUninstallSuccessful;
  
      // State related to Launcher Overlay
      LauncherOverlay mLauncherOverlay;
      boolean mScrollInteractionBegan;
      boolean mStartedSendingScrollEvents;
      boolean mShouldSendPageSettled;
      int mLastOverlaySroll = 0;
  
      private final Runnable mBindPages = new Runnable() {
          @Override
          public void run() {
              mLauncher.getModel().bindRemainingSynchronousPages();
          }
      };
  
      /**
       * Used to inflate the Workspace from XML.
       *
       * @param context The application's context.
       * @param attrs The attributes set containing the Workspace's customization values.
       */
      public Workspace(Context context, AttributeSet attrs) {
          this(context, attrs, 0);
      }
  
      /**
       * Used to inflate the Workspace from XML.
       *
       * @param context The application's context.
       * @param attrs The attributes set containing the Workspace's customization values.
       * @param defStyle Unused.
       */
      public Workspace(Context context, AttributeSet attrs, int defStyle) {
          super(context, attrs, defStyle);
          mContentIsRefreshable = false;
  
          mOutlineHelper = HolographicOutlineHelper.obtain(context);
  
          mDragEnforcer = new DropTarget.DragEnforcer(context);
          // With workspace, data is available straight from the get-go
          setDataIsReady();
  
          mLauncher = (Launcher) context;
          final Resources res = getResources();
          mWorkspaceFadeInAdjacentScreens = LauncherAppState.getInstance().getDynamicGrid().
                  getDeviceProfile().shouldFadeAdjacentWorkspaceScreens();
          mFadeInAdjacentScreens = false;
          mWallpaperManager = WallpaperManager.getInstance(context);
  
          LauncherAppState app = LauncherAppState.getInstance();
          DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
          TypedArray a = context.obtainStyledAttributes(attrs,
                  R.styleable.Workspace, defStyle, 0);
          mSpringLoadedShrinkFactor =
              res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f;
          mOverviewModeShrinkFactor = grid.getOverviewModeScale();
          mCameraDistance = res.getInteger(R.integer.config_cameraDistance);
          mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1);
          a.recycle();
  
          setOnHierarchyChangeListener(this);
          setHapticFeedbackEnabled(false);
  
          initWorkspace();
  
          // Disable multitouch across the workspace/all apps/customize tray
          setMotionEventSplittingEnabled(true);
          setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
      }
  
      @Override
      public void setInsets(Rect insets) {
          mInsets.set(insets);
  
          CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID);
          if (customScreen != null) {
              View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0);
              if (customContent instanceof Insettable) {
                  ((Insettable) customContent).setInsets(mInsets);
              }
          }
      }
  
      // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each
      // dimension if unsuccessful
      public int[] estimateItemSize(int hSpan, int vSpan,
              ItemInfo itemInfo, boolean springLoaded) {
          int[] size = new int[2];
          if (getChildCount() > 0) {
              // Use the first non-custom page to estimate the child position
              CellLayout cl = (CellLayout) getChildAt(numCustomPages());
              Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan);
              size[0] = r.width();
              size[1] = r.height();
              if (springLoaded) {
                  size[0] *= mSpringLoadedShrinkFactor;
                  size[1] *= mSpringLoadedShrinkFactor;
              }
              return size;
          } else {
              size[0] = Integer.MAX_VALUE;
              size[1] = Integer.MAX_VALUE;
              return size;
          }
      }
  
      public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo,
              int hCell, int vCell, int hSpan, int vSpan) {
          Rect r = new Rect();
          cl.cellToRect(hCell, vCell, hSpan, vSpan, r);
          return r;
      }
  
      public void onDragStart(final DragSource source, Object info, int dragAction) {
          mIsDragOccuring = true;
          updateChildrenLayersEnabled(false);
          mLauncher.lockScreenOrientation();
          mLauncher.onInteractionBegin();
          setChildrenBackgroundAlphaMultipliers(1f);
          // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging
          InstallShortcutReceiver.enableInstallQueue();
          UninstallShortcutReceiver.enableUninstallQueue();
          post(new Runnable() {
              @Override
              public void run() {
                  if (mIsDragOccuring) {
                      mDeferRemoveExtraEmptyScreen = false;
                      addExtraEmptyScreenOnDrag();
                  }
              }
          });
      }
  
  
      public void deferRemoveExtraEmptyScreen() {
          mDeferRemoveExtraEmptyScreen = true;
      }
  
      public void onDragEnd() {
          if (!mDeferRemoveExtraEmptyScreen) {
              removeExtraEmptyScreen(true, mDragSourceInternal != null);
          }
  
          mIsDragOccuring = false;
          updateChildrenLayersEnabled(false);
          mLauncher.unlockScreenOrientation(false);
  
          // Re-enable any Un/InstallShortcutReceiver and now process any queued items
          InstallShortcutReceiver.disableAndFlushInstallQueue(getContext());
          UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext());
  
          mDragSourceInternal = null;
          mLauncher.onInteractionEnd();
      }
  
      /**
       * Initializes various states for this workspace.
       */
      protected void initWorkspace() {
          mCurrentPage = mDefaultPage;
          Launcher.setScreen(mCurrentPage);
          LauncherAppState app = LauncherAppState.getInstance();
          DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
          mIconCache = app.getIconCache();
          setWillNotDraw(false);
          setClipChildren(false);
          setClipToPadding(false);
          setChildrenDrawnWithCacheEnabled(true);
  
          setMinScale(mOverviewModeShrinkFactor);
          setupLayoutTransition();
  
          mWallpaperOffset = new WallpaperOffsetInterpolator();
          Display display = mLauncher.getWindowManager().getDefaultDisplay();
          display.getSize(mDisplaySize);
  
          mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx);
          mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity);
  
          // Set the wallpaper dimensions when Launcher starts up
          setWallpaperDimension();
      }
  
      private void setupLayoutTransition() {
          // We want to show layout transitions when pages are deleted, to close the gap.
          mLayoutTransition = new LayoutTransition();
          mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING);
          mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
          mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING);
          mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING);
          setLayoutTransition(mLayoutTransition);
      }
  
      void enableLayoutTransitions() {
          setLayoutTransition(mLayoutTransition);
      }
      void disableLayoutTransitions() {
          setLayoutTransition(null);
      }
  
      @Override
      protected int getScrollMode() {
          return SmoothPagedView.X_LARGE_MODE;
      }
  
      @Override
      public void onChildViewAdded(View parent, View child) {
          if (!(child instanceof CellLayout)) {
              throw new IllegalArgumentException("A Workspace can only have CellLayout children.");
          }
          CellLayout cl = ((CellLayout) child);
          cl.setOnInterceptTouchListener(this);
          cl.setClickable(true);
          cl.setImportantForAccessibility(ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO);
          super.onChildViewAdded(parent, child);
      }
  
      protected boolean shouldDrawChild(View child) {
          final CellLayout cl = (CellLayout) child;
          return super.shouldDrawChild(child) &&
              (mIsSwitchingState ||
               cl.getShortcutsAndWidgets().getAlpha() > 0 ||
               cl.getBackgroundAlpha() > 0);
      }
  
      /**
       * @return The open folder on the current screen, or null if there is none
       */
      Folder getOpenFolder() {
          DragLayer dragLayer = mLauncher.getDragLayer();
          int count = dragLayer.getChildCount();
          for (int i = 0; i < count; i++) {
              View child = dragLayer.getChildAt(i);
              if (child instanceof Folder) {
                  Folder folder = (Folder) child;
                  if (folder.getInfo().opened)
                      return folder;
              }
          }
          return null;
      }
  
      boolean isTouchActive() {
          return mTouchState != TOUCH_STATE_REST;
      }
  
      public void removeAllWorkspaceScreens() {
          // Disable all layout transitions before removing all pages to ensure that we don't get the
          // transition animations competing with us changing the scroll when we add pages or the
          // custom content screen
          disableLayoutTransitions();
  
          // Since we increment the current page when we call addCustomContentPage via bindScreens
          // (and other places), we need to adjust the current page back when we clear the pages
          if (hasCustomContent()) {
              removeCustomContentPage();
          }
  
          // Remove the pages and clear the screen models
          removeAllViews();
          mScreenOrder.clear();
          mWorkspaceScreens.clear();
  
          // Re-enable the layout transitions
          enableLayoutTransitions();
      }
  
      public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) {
          // Find the index to insert this view into.  If the empty screen exists, then
          // insert it before that.
          int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID);
          if (insertIndex < 0) {
              insertIndex = mScreenOrder.size();
          }
          return insertNewWorkspaceScreen(screenId, insertIndex);
      }
  
      public long insertNewWorkspaceScreen(long screenId) {
          return insertNewWorkspaceScreen(screenId, getChildCount());
      }
  
      public long insertNewWorkspaceScreen(long screenId, int insertIndex) {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - insertNewWorkspaceScreen(): " + screenId +
                  " at index: " + insertIndex, true);
  
          if (mWorkspaceScreens.containsKey(screenId)) {
              throw new RuntimeException("Screen id " + screenId + " already exists!");
          }
  
          CellLayout newScreen = (CellLayout)
                  mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null);
  
          newScreen.setOnLongClickListener(mLongClickListener);
          newScreen.setOnClickListener(mLauncher);
          newScreen.setSoundEffectsEnabled(false);
          mWorkspaceScreens.put(screenId, newScreen);
          mScreenOrder.add(insertIndex, screenId);
          addView(newScreen, insertIndex);
          return screenId;
      }
  
      public void createCustomContentContainer() {
          CellLayout customScreen = (CellLayout)
                  mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null);
          customScreen.disableBackground();
          customScreen.disableDragTarget();
  
          mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen);
          mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID);
  
          // We want no padding on the custom content
          customScreen.setPadding(0, 0, 0, 0);
  
          addFullScreenPage(customScreen);
  
          // Ensure that the current page and default page are maintained.
          mDefaultPage = mOriginalDefaultPage + 1;
  
          // Update the custom content hint
          if (mRestorePage != INVALID_RESTORE_PAGE) {
              mRestorePage = mRestorePage + 1;
          } else {
              setCurrentPage(getCurrentPage() + 1);
          }
      }
  
      public void removeCustomContentPage() {
          CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID);
          if (customScreen == null) {
              throw new RuntimeException("Expected custom content screen to exist");
          }
  
          mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID);
          mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID);
          removeView(customScreen);
  
          if (mCustomContentCallbacks != null) {
              mCustomContentCallbacks.onScrollProgressChanged(0);
              mCustomContentCallbacks.onHide();
          }
  
          mCustomContentCallbacks = null;
  
          // Ensure that the current page and default page are maintained.
          mDefaultPage = mOriginalDefaultPage - 1;
  
          // Update the custom content hint
          if (mRestorePage != INVALID_RESTORE_PAGE) {
              mRestorePage = mRestorePage - 1;
          } else {
              setCurrentPage(getCurrentPage() - 1);
          }
      }
  
      public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks,
              String description) {
          if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) {
              throw new RuntimeException("Expected custom content screen to exist");
          }
  
          // Add the custom content to the full screen custom page
          CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID);
          int spanX = customScreen.getCountX();
          int spanY = customScreen.getCountY();
          CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY);
          lp.canReorder  = false;
          lp.isFullscreen = true;
          if (customContent instanceof Insettable) {
              ((Insettable)customContent).setInsets(mInsets);
          }
  
          // Verify that the child is removed from any existing parent.
          if (customContent.getParent() instanceof ViewGroup) {
              ViewGroup parent = (ViewGroup) customContent.getParent();
              parent.removeView(customContent);
          }
          customScreen.removeAllViews();
          customScreen.addViewToCellLayout(customContent, 0, 0, lp, true);
          mCustomContentDescription = description;
  
          mCustomContentCallbacks = callbacks;
      }
  
      public void addExtraEmptyScreenOnDrag() {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - addExtraEmptyScreenOnDrag()", true);
  
          boolean lastChildOnScreen = false;
          boolean childOnFinalScreen = false;
  
          // Cancel any pending removal of empty screen
          mRemoveEmptyScreenRunnable = null;
  
          if (mDragSourceInternal != null) {
              if (mDragSourceInternal.getChildCount() == 1) {
                  lastChildOnScreen = true;
              }
              CellLayout cl = (CellLayout) mDragSourceInternal.getParent();
              if (indexOfChild(cl) == getChildCount() - 1) {
                  childOnFinalScreen = true;
              }
          }
  
          // If this is the last item on the final screen
          if (lastChildOnScreen && childOnFinalScreen) {
              return;
          }
          if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) {
              insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID);
          }
      }
  
      public boolean addExtraEmptyScreen() {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - addExtraEmptyScreen()", true);
  
          if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) {
              insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID);
              return true;
          }
          return false;
      }
  
      private void convertFinalScreenToEmptyScreenIfNecessary() {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - convertFinalScreenToEmptyScreenIfNecessary()", true);
  
          if (mLauncher.isWorkspaceLoading()) {
              // Invalid and dangerous operation if workspace is loading
              Launcher.addDumpLog(TAG, "    - workspace loading, skip", true);
              return;
          }
  
          if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return;
          long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1);
  
          if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return;
          CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId);
  
          // If the final screen is empty, convert it to the extra empty screen
          if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 &&
                  !finalScreen.isDropPending()) {
              mWorkspaceScreens.remove(finalScreenId);
              mScreenOrder.remove(finalScreenId);
  
              // if this is the last non-custom content screen, convert it to the empty screen
              mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen);
              mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID);
  
              // Update the model if we have changed any screens
              mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
              Launcher.addDumpLog(TAG, "11683562 -   extra empty screen: " + finalScreenId, true);
          }
      }
  
      public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) {
          removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens);
      }
  
      public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete,
              final int delay, final boolean stripEmptyScreens) {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - removeExtraEmptyScreen()", true);
          if (mLauncher.isWorkspaceLoading()) {
              // Don't strip empty screens if the workspace is still loading
              Launcher.addDumpLog(TAG, "    - workspace loading, skip", true);
              return;
          }
  
          if (delay > 0) {
              postDelayed(new Runnable() {
                  @Override
                  public void run() {
                      removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens);
                  }
              }, delay);
              return;
          }
  
          convertFinalScreenToEmptyScreenIfNecessary();
          if (hasExtraEmptyScreen()) {
              int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID);
              if (getNextPage() == emptyIndex) {
                  snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION);
                  fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION,
                          onComplete, stripEmptyScreens);
              } else {
                  fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION,
                          onComplete, stripEmptyScreens);
              }
              return;
          } else if (stripEmptyScreens) {
              // If we're not going to strip the empty screens after removing
              // the extra empty screen, do it right away.
              stripEmptyScreens();
          }
  
          if (onComplete != null) {
              onComplete.run();
          }
      }
  
      private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete,
              final boolean stripEmptyScreens) {
          // Log to disk
          // XXX: Do we need to update LM workspace screens below?
          Launcher.addDumpLog(TAG, "11683562 - fadeAndRemoveEmptyScreen()", true);
          PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f);
          PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f);
  
          final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID);
  
          mRemoveEmptyScreenRunnable = new Runnable() {
              @Override
              public void run() {
                  if (hasExtraEmptyScreen()) {
                      mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID);
                      mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID);
                      removeView(cl);
                      if (stripEmptyScreens) {
                          stripEmptyScreens();
                      }
                  }
              }
          };
  
          ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha);
          oa.setDuration(duration);
          oa.setStartDelay(delay);
          oa.addListener(new AnimatorListenerAdapter() {
              @Override
              public void onAnimationEnd(Animator animation) {
                  if (mRemoveEmptyScreenRunnable != null) {
                      mRemoveEmptyScreenRunnable.run();
                  }
                  if (onComplete != null) {
                      onComplete.run();
                  }
              }
          });
          oa.start();
      }
  
      public boolean hasExtraEmptyScreen() {
          int nScreens = getChildCount();
          nScreens = nScreens - numCustomPages();
          return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1;
      }
  
      public long commitExtraEmptyScreen() {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - commitExtraEmptyScreen()", true);
          if (mLauncher.isWorkspaceLoading()) {
              // Invalid and dangerous operation if workspace is loading
              Launcher.addDumpLog(TAG, "    - workspace loading, skip", true);
              return -1;
          }
  
          int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID);
          CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID);
          mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID);
          mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID);
  
          long newId = LauncherAppState.getLauncherProvider().generateNewScreenId();
          mWorkspaceScreens.put(newId, cl);
          mScreenOrder.add(newId);
  
          // Update the page indicator marker
          if (getPageIndicator() != null) {
              getPageIndicator().updateMarker(index, getPageIndicatorMarker(index));
          }
  
          // Update the model for the new screen
          mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
  
          return newId;
      }
  
      public CellLayout getScreenWithId(long screenId) {
          CellLayout layout = mWorkspaceScreens.get(screenId);
          return layout;
      }
  
      public long getIdForScreen(CellLayout layout) {
          Iterator<Long> iter = mWorkspaceScreens.keySet().iterator();
          while (iter.hasNext()) {
              long id = iter.next();
              if (mWorkspaceScreens.get(id) == layout) {
                  return id;
              }
          }
          return -1;
      }
  
      public int getPageIndexForScreenId(long screenId) {
          return indexOfChild(mWorkspaceScreens.get(screenId));
      }
  
      public long getScreenIdForPageIndex(int index) {
          if (0 <= index && index < mScreenOrder.size()) {
              return mScreenOrder.get(index);
          }
          return -1;
      }
  
      ArrayList<Long> getScreenOrder() {
          return mScreenOrder;
      }
  
      public void stripEmptyScreens() {
          // Log to disk
          Launcher.addDumpLog(TAG, "11683562 - stripEmptyScreens()", true);
  
          if (mLauncher.isWorkspaceLoading()) {
              // Don't strip empty screens if the workspace is still loading.
              // This is dangerous and can result in data loss.
              Launcher.addDumpLog(TAG, "    - workspace loading, skip", true);
              return;
          }
  
          if (isPageMoving()) {
              mStripScreensOnPageStopMoving = true;
              return;
          }
  
          int currentPage = getNextPage();
          ArrayList<Long> removeScreens = new ArrayList<Long>();
          for (Long id: mWorkspaceScreens.keySet()) {
              CellLayout cl = mWorkspaceScreens.get(id);
              if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) {
                  removeScreens.add(id);
              }
          }
  
          // We enforce at least one page to add new items to. In the case that we remove the last
          // such screen, we convert the last screen to the empty screen
          int minScreens = 1 + numCustomPages();
  
          int pageShift = 0;
          for (Long id: removeScreens) {
              Launcher.addDumpLog(TAG, "11683562 -   removing id: " + id, true);
              CellLayout cl = mWorkspaceScreens.get(id);
              mWorkspaceScreens.remove(id);
              mScreenOrder.remove(id);
  
              if (getChildCount() > minScreens) {
                  if (indexOfChild(cl) < currentPage) {
                      pageShift++;
                  }
                  removeView(cl);
              } else {
                  // if this is the last non-custom content screen, convert it to the empty screen
                  mRemoveEmptyScreenRunnable = null;
                  mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl);
                  mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID);
              }
          }
  
          if (!removeScreens.isEmpty()) {
              // Update the model if we have changed any screens
              mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
          }
  
          if (pageShift >= 0) {
              setCurrentPage(currentPage - pageShift);
          }
      }
  
      // See implementation for parameter definition.
      void addInScreen(View child, long container, long screenId,
              int x, int y, int spanX, int spanY) {
          addInScreen(child, container, screenId, x, y, spanX, spanY, false, false);
      }
  
      // At bind time, we use the rank (screenId) to compute x and y for hotseat items.
      // See implementation for parameter definition.
      void addInScreenFromBind(View child, long container, long screenId, int x, int y,
              int spanX, int spanY) {
          addInScreen(child, container, screenId, x, y, spanX, spanY, false, true);
      }
  
      // See implementation for parameter definition.
      void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY,
              boolean insert) {
          addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false);
      }
  
      /**
       * Adds the specified child in the specified screen. The position and dimension of
       * the child are defined by x, y, spanX and spanY.
       *
       * @param child The child to add in one of the workspace's screens.
       * @param screenId The screen in which to add the child.
       * @param x The X position of the child in the screen's grid.
       * @param y The Y position of the child in the screen's grid.
       * @param spanX The number of cells spanned horizontally by the child.
       * @param spanY The number of cells spanned vertically by the child.
       * @param insert When true, the child is inserted at the beginning of the children list.
       * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute
       *                          the x and y position in which to place hotseat items. Otherwise
       *                          we use the x and y position to compute the rank.
       */
      void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY,
              boolean insert, boolean computeXYFromRank) {
          if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
              if (getScreenWithId(screenId) == null) {
                  Log.e(TAG, "Skipping child, screenId " + screenId + " not found");
                  // DEBUGGING - Print out the stack trace to see where we are adding from
                  new Throwable().printStackTrace();
                  return;
              }
          }
          if (screenId == EXTRA_EMPTY_SCREEN_ID) {
              // This should never happen
              throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID");
          }
  
          final CellLayout layout;
          if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
              layout = mLauncher.getHotseat().getLayout();
              child.setOnKeyListener(new HotseatIconKeyEventListener());
  
              // Hide folder title in the hotseat
              if (child instanceof FolderIcon) {
                  ((FolderIcon) child).setTextVisible(false);
              }
  
              if (computeXYFromRank) {
                  x = mLauncher.getHotseat().getCellXFromOrder((int) screenId);
                  y = mLauncher.getHotseat().getCellYFromOrder((int) screenId);
              } else {
                  screenId = mLauncher.getHotseat().getOrderInHotseat(x, y);
              }
          } else {
              // Show folder title if not in the hotseat
              if (child instanceof FolderIcon) {
                  ((FolderIcon) child).setTextVisible(true);
              }
              layout = getScreenWithId(screenId);
              child.setOnKeyListener(new IconKeyEventListener());
          }
  
          ViewGroup.LayoutParams genericLp = child.getLayoutParams();
          CellLayout.LayoutParams lp;
          if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) {
              lp = new CellLayout.LayoutParams(x, y, spanX, spanY);
          } else {
              lp = (CellLayout.LayoutParams) genericLp;
              lp.cellX = x;
              lp.cellY = y;
              lp.cellHSpan = spanX;
              lp.cellVSpan = spanY;
          }
  
          if (spanX < 0 && spanY < 0) {
              lp.isLockedToGrid = false;
          }
  
          // Get the canonical child id to uniquely represent this view in this screen
          ItemInfo info = (ItemInfo) child.getTag();
          int childId = mLauncher.getViewIdForItem(info);
  
          boolean markCellsAsOccupied = !(child instanceof Folder);
          if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) {
              // TODO: This branch occurs when the workspace is adding views
              // outside of the defined grid
              // maybe we should be deleting these items from the LauncherModel?
              Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true);
          }
  
          if (!(child instanceof Folder)) {
              child.setHapticFeedbackEnabled(false);
              child.setOnLongClickListener(mLongClickListener);
          }
          if (child instanceof DropTarget) {
              mDragController.addDropTarget((DropTarget) child);
          }
      }
  
      /**
       * Called directly from a CellLayout (not by the framework), after we've been added as a
       * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout
       * that it should intercept touch events, which is not something that is normally supported.
       */
      @Override
      public boolean onTouch(View v, MotionEvent event) {
          return (workspaceInModalState() || !isFinishedSwitchingState())
                  || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage);
      }
  
      public boolean isSwitchingState() {
          return mIsSwitchingState;
      }
  
      /** This differs from isSwitchingState in that we take into account how far the transition
       *  has completed. */
      public boolean isFinishedSwitchingState() {
          return !mIsSwitchingState || (mTransitionProgress > 0.5f);
      }
  
      protected void onWindowVisibilityChanged (int visibility) {
          mLauncher.onWindowVisibilityChanged(visibility);
      }
  
      @Override
      public boolean dispatchUnhandledMove(View focused, int direction) {
          if (workspaceInModalState() || !isFinishedSwitchingState()) {
              // when the home screens are shrunken, shouldn't allow side-scrolling
              return false;
          }
          return super.dispatchUnhandledMove(focused, direction);
      }
  
      @Override
      public boolean onInterceptTouchEvent(MotionEvent ev) {
          switch (ev.getAction() & MotionEvent.ACTION_MASK) {
          case MotionEvent.ACTION_DOWN:
              mXDown = ev.getX();
              mYDown = ev.getY();
              mTouchDownTime = System.currentTimeMillis();
              break;
          case MotionEvent.ACTION_POINTER_UP:
          case MotionEvent.ACTION_UP:
              if (mTouchState == TOUCH_STATE_REST) {
                  final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage);
                  if (currentPage != null && !currentPage.lastDownOnOccupiedCell()) {
                      onWallpaperTap(ev);
                  }
              }
          }
          return super.onInterceptTouchEvent(ev);
      }
  
      @Override
      public boolean onGenericMotionEvent(MotionEvent event) {
          // Ignore pointer scroll events if the custom content doesn't allow scrolling.
          if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID)
                  && (mCustomContentCallbacks != null)
                  && !mCustomContentCallbacks.isScrollingAllowed()) {
              return false;
          }
          return super.onGenericMotionEvent(event);
      }
  
      protected void reinflateWidgetsIfNecessary() {
          final int clCount = getChildCount();
          for (int i = 0; i < clCount; i++) {
              CellLayout cl = (CellLayout) getChildAt(i);
              ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets();
              final int itemCount = swc.getChildCount();
              for (int j = 0; j < itemCount; j++) {
                  View v = swc.getChildAt(j);
  
                  if (v != null  && v.getTag() instanceof LauncherAppWidgetInfo) {
                      LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag();
                      LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView;
                      if (lahv != null && lahv.isReinflateRequired()) {
                          mLauncher.removeAppWidget(info);
                          // Remove the current widget which is inflated with the wrong orientation
                          cl.removeView(lahv);
                          mLauncher.bindAppWidget(info);
                      }
                  }
              }
          }
      }
  
      @Override
      protected void determineScrollingStart(MotionEvent ev) {
          if (!isFinishedSwitchingState()) return;
  
          float deltaX = ev.getX() - mXDown;
          float absDeltaX = Math.abs(deltaX);
          float absDeltaY = Math.abs(ev.getY() - mYDown);
  
          if (Float.compare(absDeltaX, 0f) == 0) return;
  
          float slope = absDeltaY / absDeltaX;
          float theta = (float) Math.atan(slope);
  
          if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) {
              cancelCurrentPageLongPress();
          }
  
          boolean passRightSwipesToCustomContent =
                  (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY;
  
          boolean swipeInIgnoreDirection = isLayoutRtl() ? deltaX < 0 : deltaX > 0;
          boolean onCustomContentScreen =
                  getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID;
          if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) {
              // Pass swipes to the right to the custom content page.
              return;
          }
  
          if (onCustomContentScreen && (mCustomContentCallbacks != null)
                  && !mCustomContentCallbacks.isScrollingAllowed()) {
              // Don't allow workspace scrolling if the current custom content screen doesn't allow
              // scrolling.
              return;
          }
  
          if (theta > MAX_SWIPE_ANGLE) {
              // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace
              return;
          } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) {
              // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to
              // increase the touch slop to make it harder to begin scrolling the workspace. This
              // results in vertically scrolling widgets to more easily. The higher the angle, the
              // more we increase touch slop.
              theta -= START_DAMPING_TOUCH_SLOP_ANGLE;
              float extraRatio = (float)
                      Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE)));
              super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio);
          } else {
              // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special
              super.determineScrollingStart(ev);
          }
      }
  
      protected void onPageBeginMoving() {
          super.onPageBeginMoving();
  
          if (isHardwareAccelerated()) {
              updateChildrenLayersEnabled(false);
          } else {
              if (mNextPage != INVALID_PAGE) {
                  // we're snapping to a particular screen
                  enableChildrenCache(mCurrentPage, mNextPage);
              } else {
                  // this is when user is actively dragging a particular screen, they might
                  // swipe it either left or right (but we won't advance by more than one screen)
                  enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1);
              }
          }
      }
  
      protected void onPageEndMoving() {
          super.onPageEndMoving();
  
          if (isHardwareAccelerated()) {
              updateChildrenLayersEnabled(false);
          } else {
              clearChildrenCache();
          }
  
          if (mDragController.isDragging()) {
              if (workspaceInModalState()) {
                  // If we are in springloaded mode, then force an event to check if the current touch
                  // is under a new page (to scroll to)
                  mDragController.forceTouchMove();
              }
          }
  
          if (mDelayedResizeRunnable != null) {
              mDelayedResizeRunnable.run();
              mDelayedResizeRunnable = null;
          }
  
          if (mDelayedSnapToPageRunnable != null) {
              mDelayedSnapToPageRunnable.run();
              mDelayedSnapToPageRunnable = null;
          }
          if (mStripScreensOnPageStopMoving) {
              stripEmptyScreens();
              mStripScreensOnPageStopMoving = false;
          }
  
          if (mShouldSendPageSettled) {
              mLauncherOverlay.onScrollSettled();
              mShouldSendPageSettled = false;
          }
      }
  
      protected void onScrollInteractionBegin() {
          super.onScrollInteractionEnd();
          mScrollInteractionBegan = true;
      }
  
      protected void onScrollInteractionEnd() {
          super.onScrollInteractionEnd();
          mScrollInteractionBegan = false;
          if (mStartedSendingScrollEvents) {
              mStartedSendingScrollEvents = false;
              mLauncherOverlay.onScrollInteractionEnd();
          }
      }
  
      public void setLauncherOverlay(LauncherOverlay overlay) {
          mLauncherOverlay = overlay;
      }
  
      @Override
      protected void overScroll(float amount) {
          boolean isRtl = isLayoutRtl();
          boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || isRtl)) ||
                  (amount >= 0 && (!hasCustomContent() || !isRtl));
  
          boolean shouldScrollOverlay = mLauncherOverlay != null &&
                  ((amount <= 0 && !isRtl) || (amount >= 0 && isRtl));
  
          boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 &&
                  ((amount >= 0 && !isRtl) || (amount <= 0 && isRtl));
  
          if (shouldScrollOverlay) {
              if (!mStartedSendingScrollEvents && mScrollInteractionBegan) {
                  mStartedSendingScrollEvents = true;
                  mLauncherOverlay.onScrollInteractionBegin();
                  mShouldSendPageSettled = true;
              }
              int screenSize = getViewportWidth();
              float f = (amount / screenSize);
  
              int progress = (int) Math.abs((f * 100));
  
              mLastOverlaySroll = progress;
              mLauncherOverlay.onScrollChange(progress, isRtl);
          } else if (shouldOverScroll) {
              dampedOverScroll(amount);
              mOverScrollEffect = acceleratedOverFactor(amount);
          } else {
              mOverScrollEffect = 0;
          }
  
          if (shouldZeroOverlay) {
              mLauncherOverlay.onScrollChange(0, isRtl);
          }
      }
  
      @Override
      protected void notifyPageSwitchListener() {
          super.notifyPageSwitchListener();
          Launcher.setScreen(getNextPage());
  
          if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) {
              mCustomContentShowing = true;
              if (mCustomContentCallbacks != null) {
                  mCustomContentCallbacks.onShow(false);
                  mCustomContentShowTime = System.currentTimeMillis();
              }
          } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) {
              mCustomContentShowing = false;
              if (mCustomContentCallbacks != null) {
                  mCustomContentCallbacks.onHide();
              }
          }
      }
  
      protected CustomContentCallbacks getCustomContentCallbacks() {
          return mCustomContentCallbacks;
      }
  
      protected void setWallpaperDimension() {
          new AsyncTask<Void, Void, Void>() {
              public Void doInBackground(Void ... args) {
                  String spKey = WallpaperCropActivity.getSharedPreferencesKey();
                  SharedPreferences sp =
                          mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS);
                  LauncherWallpaperPickerActivity.suggestWallpaperDimension(mLauncher.getResources(),
                          sp, mLauncher.getWindowManager(), mWallpaperManager,
                          mLauncher.overrideWallpaperDimensions());
                  return null;
              }
          }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
      }
  
      protected void snapToPage(int whichPage, Runnable r) {
          snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r);
      }
  
      protected void snapToPage(int whichPage, int duration, Runnable r) {
          if (mDelayedSnapToPageRunnable != null) {
              mDelayedSnapToPageRunnable.run();
          }
          mDelayedSnapToPageRunnable = r;
          snapToPage(whichPage, duration);
      }
  
      public void snapToScreenId(long screenId) {
          snapToScreenId(screenId, null);
      }
  
      protected void snapToScreenId(long screenId, Runnable r) {
          snapToPage(getPageIndexForScreenId(screenId), r);
      }
  
      class WallpaperOffsetInterpolator implements Choreographer.FrameCallback {
          float mFinalOffset = 0.0f;
          float mCurrentOffset = 0.5f; // to force an initial update
          boolean mWaitingForUpdate;
          Choreographer mChoreographer;
          Interpolator mInterpolator;
          boolean mAnimating;
          long mAnimationStartTime;
          float mAnimationStartOffset;
          private final int ANIMATION_DURATION = 250;
          // Don't use all the wallpaper for parallax until you have at least this many pages
          private final int MIN_PARALLAX_PAGE_SPAN = 3;
          int mNumScreens;
  
          public WallpaperOffsetInterpolator() {
              mChoreographer = Choreographer.getInstance();
              mInterpolator = new DecelerateInterpolator(1.5f);
          }
  
          @Override
          public void doFrame(long frameTimeNanos) {
              updateOffset(false);
          }
  
          private void updateOffset(boolean force) {
              if (mWaitingForUpdate || force) {
                  mWaitingForUpdate = false;
                  if (computeScrollOffset() && mWindowToken != null) {
                      try {
                          mWallpaperManager.setWallpaperOffsets(mWindowToken,
                                  mWallpaperOffset.getCurrX(), 0.5f);
                          setWallpaperOffsetSteps();
                      } catch (IllegalArgumentException e) {
                          Log.e(TAG, "Error updating wallpaper offset: " + e);
                      }
                  }
              }
          }
  
          public boolean computeScrollOffset() {
              final float oldOffset = mCurrentOffset;
              if (mAnimating) {
                  long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime;
                  float t0 = durationSinceAnimation / (float) ANIMATION_DURATION;
                  float t1 = mInterpolator.getInterpolation(t0);
                  mCurrentOffset = mAnimationStartOffset +
                          (mFinalOffset - mAnimationStartOffset) * t1;
                  mAnimating = durationSinceAnimation < ANIMATION_DURATION;
              } else {
                  mCurrentOffset = mFinalOffset;
              }
  
              if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) {
                  scheduleUpdate();
              }
              if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) {
                  return true;
              }
              return false;
          }
  
          private float wallpaperOffsetForCurrentScroll() {
              if (getChildCount() <= 1) {
                  return 0;
              }
  
              // Exclude the leftmost page
              int emptyExtraPages = numEmptyScreensToIgnore();
              int firstIndex = numCustomPages();
              // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages)
              int lastIndex = getChildCount() - 1 - emptyExtraPages;
              if (isLayoutRtl()) {
                  int temp = firstIndex;
                  firstIndex = lastIndex;
                  lastIndex = temp;
              }
  
              int firstPageScrollX = getScrollForPage(firstIndex);
              int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX;
              if (scrollRange == 0) {
                  return 0;
              } else {
                  // TODO: do different behavior if it's  a live wallpaper?
                  // Sometimes the left parameter of the pages is animated during a layout transition;
                  // this parameter offsets it to keep the wallpaper from animating as well
                  int adjustedScroll =
                          getScrollX() - firstPageScrollX - getLayoutTransitionOffsetForPage(0);
                  float offset = Math.min(1, adjustedScroll / (float) scrollRange);
                  offset = Math.max(0, offset);
                  // Don't use up all the wallpaper parallax until you have at least
                  // MIN_PARALLAX_PAGE_SPAN pages
                  int numScrollingPages = getNumScreensExcludingEmptyAndCustom();
                  int parallaxPageSpan;
                  if (mWallpaperIsLiveWallpaper) {
                      parallaxPageSpan = numScrollingPages - 1;
                  } else {
                      parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1);
                  }
                  mNumPagesForWallpaperParallax = parallaxPageSpan;
  
                  // On RTL devices, push the wallpaper offset to the right if we don't have enough
                  // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN)
                  int padding = isLayoutRtl() ? parallaxPageSpan - numScrollingPages + 1 : 0;
                  return offset * (padding + numScrollingPages - 1) / parallaxPageSpan;
              }
          }
  
          private int numEmptyScreensToIgnore() {
              int numScrollingPages = getChildCount() - numCustomPages();
              if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) {
                  return 1;
              } else {
                  return 0;
              }
          }
  
          private int getNumScreensExcludingEmptyAndCustom() {
              int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages();
              return numScrollingPages;
          }
  
          public void syncWithScroll() {
              float offset = wallpaperOffsetForCurrentScroll();
              mWallpaperOffset.setFinalX(offset);
              updateOffset(true);
          }
  
          public float getCurrX() {
              return mCurrentOffset;
          }
  
          public float getFinalX() {
              return mFinalOffset;
          }
  
          private void animateToFinal() {
              mAnimating = true;
              mAnimationStartOffset = mCurrentOffset;
              mAnimationStartTime = System.currentTimeMillis();
          }
  
          private void setWallpaperOffsetSteps() {
              // Set wallpaper offset steps (1 / (number of screens - 1))
              float xOffset = 1.0f / mNumPagesForWallpaperParallax;
              if (xOffset != mLastSetWallpaperOffsetSteps) {
                  mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f);
                  mLastSetWallpaperOffsetSteps = xOffset;
              }
          }
  
          public void setFinalX(float x) {
              scheduleUpdate();
              mFinalOffset = Math.max(0f, Math.min(x, 1.0f));
              if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) {
                  if (mNumScreens > 0) {
                      // Don't animate if we're going from 0 screens
                      animateToFinal();
                  }
                  mNumScreens = getNumScreensExcludingEmptyAndCustom();
              }
          }
  
          private void scheduleUpdate() {
              if (!mWaitingForUpdate) {
                  mChoreographer.postFrameCallback(this);
                  mWaitingForUpdate = true;
              }
          }
  
          public void jumpToFinal() {
              mCurrentOffset = mFinalOffset;
          }
      }
  
      @Override
      public void computeScroll() {
          super.computeScroll();
          mWallpaperOffset.syncWithScroll();
      }
  
      @Override
      public void announceForAccessibility(CharSequence text) {
          // Don't announce if apps is on top of us.
          if (!mLauncher.isAllAppsVisible()) {
              super.announceForAccessibility(text);
          }
      }
  
      void showOutlines() {
          if (!workspaceInModalState() && !mIsSwitchingState) {
              if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel();
              if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel();
              mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f);
              mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION);
              mChildrenOutlineFadeInAnimation.start();
          }
      }
  
      void hideOutlines() {
          if (!workspaceInModalState() && !mIsSwitchingState) {
              if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel();
              if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel();
              mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f);
              mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION);
              mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY);
              mChildrenOutlineFadeOutAnimation.start();
          }
      }
  
      public void showOutlinesTemporarily() {
          if (!mIsPageMoving && !isTouchActive()) {
              snapToPage(mCurrentPage);
          }
      }
  
      public void setChildrenOutlineAlpha(float alpha) {
          mChildrenOutlineAlpha = alpha;
          for (int i = 0; i < getChildCount(); i++) {
              CellLayout cl = (CellLayout) getChildAt(i);
              cl.setBackgroundAlpha(alpha);
          }
      }
  
      public float getChildrenOutlineAlpha() {
          return mChildrenOutlineAlpha;
      }
  
      private void animateBackgroundGradient(float finalAlpha, boolean animated) {
          final DragLayer dragLayer = mLauncher.getDragLayer();
  
          if (mBackgroundFadeInAnimation != null) {
              mBackgroundFadeInAnimation.cancel();
              mBackgroundFadeInAnimation = null;
          }
          if (mBackgroundFadeOutAnimation != null) {
              mBackgroundFadeOutAnimation.cancel();
              mBackgroundFadeOutAnimation = null;
          }
          float startAlpha = dragLayer.getBackgroundAlpha();
          if (finalAlpha != startAlpha) {
              if (animated) {
                  mBackgroundFadeOutAnimation =
                          LauncherAnimUtils.ofFloat(this, startAlpha, finalAlpha);
                  mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() {
                      public void onAnimationUpdate(ValueAnimator animation) {
                          dragLayer.setBackgroundAlpha(
                                  ((Float)animation.getAnimatedValue()).floatValue());
                      }
                  });
                  mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f));
                  mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION);
                  mBackgroundFadeOutAnimation.start();
              } else {
                  dragLayer.setBackgroundAlpha(finalAlpha);
              }
          }
      }
  
      float backgroundAlphaInterpolator(float r) {
          float pivotA = 0.1f;
          float pivotB = 0.4f;
          if (r < pivotA) {
              return 0;
          } else if (r > pivotB) {
              return 1.0f;
          } else {
              return (r - pivotA)/(pivotB - pivotA);
          }
      }
  
      private void updatePageAlphaValues(int screenCenter) {
          boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX;
          if (mWorkspaceFadeInAdjacentScreens &&
                  !workspaceInModalState() &&
                  !mIsSwitchingState &&
                  !isInOverscroll) {
              for (int i = numCustomPages(); i < getChildCount(); i++) {
                  CellLayout child = (CellLayout) getChildAt(i);
                  if (child != null) {
                      float scrollProgress = getScrollProgress(screenCenter, child, i);
                      float alpha = 1 - Math.abs(scrollProgress);
                      child.getShortcutsAndWidgets().setAlpha(alpha);
                      //child.setBackgroundAlphaMultiplier(1 - alpha);
                  }
              }
          }
      }
  
      private void setChildrenBackgroundAlphaMultipliers(float a) {
          for (int i = 0; i < getChildCount(); i++) {
              CellLayout child = (CellLayout) getChildAt(i);
              child.setBackgroundAlphaMultiplier(a);
          }
      }
  
      public boolean hasCustomContent() {
          return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID);
      }
  
      public int numCustomPages() {
          return hasCustomContent() ? 1 : 0;
      }
  
      public boolean isOnOrMovingToCustomContent() {
          return hasCustomContent() && getNextPage() == 0;
      }
  
      private void updateStateForCustomContent(int screenCenter) {
          float translationX = 0;
          float progress = 0;
          if (hasCustomContent()) {
              int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID);
  
              int scrollDelta = getScrollX() - getScrollForPage(index) -
                      getLayoutTransitionOffsetForPage(index);
              float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index);
              translationX = scrollRange - scrollDelta;
              progress = (scrollRange - scrollDelta) / scrollRange;
  
              if (isLayoutRtl()) {
                  translationX = Math.min(0, translationX);
              } else {
                  translationX = Math.max(0, translationX);
              }
              progress = Math.max(0, progress);
          }
  
          if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return;
  
          CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID);
          if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) {
              cc.setVisibility(VISIBLE);
          }
  
          mLastCustomContentScrollProgress = progress;
  
          mLauncher.getDragLayer().setBackgroundAlpha(progress * 0.8f);
  
          if (mLauncher.getHotseat() != null) {
              mLauncher.getHotseat().setTranslationX(translationX);
          }
  
          if (getPageIndicator() != null) {
              getPageIndicator().setTranslationX(translationX);
          }
  
          if (mCustomContentCallbacks != null) {
              mCustomContentCallbacks.onScrollProgressChanged(progress);
          }
      }
  
      @Override
      protected OnClickListener getPageIndicatorClickListener() {
          AccessibilityManager am = (AccessibilityManager)
                  getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
          if (!am.isTouchExplorationEnabled()) {
              return null;
          }
          OnClickListener listener = new OnClickListener() {
              @Override
              public void onClick(View arg0) {
                  enterOverviewMode();
              }
          };
          return listener;
      }
  
      @Override
      protected void screenScrolled(int screenCenter) {
          final boolean isRtl = isLayoutRtl();
          super.screenScrolled(screenCenter);
  
          updatePageAlphaValues(screenCenter);
          updateStateForCustomContent(screenCenter);
          enableHwLayersOnVisiblePages();
  
          boolean shouldOverScroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX;
  
          if (shouldOverScroll) {
              int index = 0;
              final int lowerIndex = 0;
              final int upperIndex = getChildCount() - 1;
  
              final boolean isLeftPage = mOverScrollX < 0;
              index = (!isRtl && isLeftPage) || (isRtl && !isLeftPage) ? lowerIndex : upperIndex;
  
              CellLayout cl = (CellLayout) getChildAt(index);
              float effect = Math.abs(mOverScrollEffect);
              cl.setOverScrollAmount(Math.abs(effect), isLeftPage);
  
              mOverscrollEffectSet = true;
          } else {
              if (mOverscrollEffectSet && getChildCount() > 0) {
                  mOverscrollEffectSet = false;
                  ((CellLayout) getChildAt(0)).setOverScrollAmount(0, false);
                  ((CellLayout) getChildAt(getChildCount() - 1)).setOverScrollAmount(0, false);
              }
          }
      }
  
      protected void onAttachedToWindow() {
          super.onAttachedToWindow();
          mWindowToken = getWindowToken();
          computeScroll();
          mDragController.setWindowToken(mWindowToken);
      }
  
      protected void onDetachedFromWindow() {
          super.onDetachedFromWindow();
          mWindowToken = null;
      }
  
      protected void onResume() {
          if (getPageIndicator() != null) {
              // In case accessibility state has changed, we need to perform this on every
              // attach to window
              OnClickListener listener = getPageIndicatorClickListener();
              if (listener != null) {
                  getPageIndicator().setOnClickListener(listener);
              }
          }
          AccessibilityManager am = (AccessibilityManager)
                  getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
          sAccessibilityEnabled = am.isEnabled();
  
          // Update wallpaper dimensions if they were changed since last onResume
          // (we also always set the wallpaper dimensions in the constructor)
          if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) {
              setWallpaperDimension();
          }
          mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null;
          // Force the wallpaper offset steps to be set again, because another app might have changed
          // them
          mLastSetWallpaperOffsetSteps = 0f;
      }
  
      @Override
      protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
          if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) {
              mWallpaperOffset.syncWithScroll();
              mWallpaperOffset.jumpToFinal();
          }
          super.onLayout(changed, left, top, right, bottom);
      }
  
      @Override
      protected void onDraw(Canvas canvas) {
          super.onDraw(canvas);
  
          // Call back to LauncherModel to finish binding after the first draw
          post(mBindPages);
      }
  
      @Override
      protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) {
          if (!mLauncher.isAllAppsVisible()) {
              final Folder openFolder = getOpenFolder();
              if (openFolder != null) {
                  return openFolder.requestFocus(direction, previouslyFocusedRect);
              } else {
                  return super.onRequestFocusInDescendants(direction, previouslyFocusedRect);
              }
          }
          return false;
      }
  
      @Override
      public int getDescendantFocusability() {
          if (workspaceInModalState()) {
              return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
          }
          return super.getDescendantFocusability();
      }
  
      @Override
      public void addFocusables(ArrayList<View> views, int direction, int focusableMode) {
          if (!mLauncher.isAllAppsVisible()) {
              final Folder openFolder = getOpenFolder();
              if (openFolder != null) {
                  openFolder.addFocusables(views, direction);
              } else {
                  super.addFocusables(views, direction, focusableMode);
              }
          }
      }
  
      public boolean workspaceInModalState() {
          return mState != State.NORMAL;
      }
  
      void enableChildrenCache(int fromPage, int toPage) {
          if (fromPage > toPage) {
              final int temp = fromPage;
              fromPage = toPage;
              toPage = temp;
          }
  
          final int screenCount = getChildCount();
  
          fromPage = Math.max(fromPage, 0);
          toPage = Math.min(toPage, screenCount - 1);
  
          for (int i = fromPage; i <= toPage; i++) {
              final CellLayout layout = (CellLayout) getChildAt(i);
              layout.setChildrenDrawnWithCacheEnabled(true);
              layout.setChildrenDrawingCacheEnabled(true);
          }
      }
  
      void clearChildrenCache() {
          final int screenCount = getChildCount();
          for (int i = 0; i < screenCount; i++) {
              final CellLayout layout = (CellLayout) getChildAt(i);
              layout.setChildrenDrawnWithCacheEnabled(false);
              // In software mode, we don't want the items to continue to be drawn into bitmaps
              if (!isHardwareAccelerated()) {
                  layout.setChildrenDrawingCacheEnabled(false);
              }
          }
      }
  
      private void updateChildrenLayersEnabled(boolean force) {
          boolean small = mState == State.OVERVIEW || mIsSwitchingState;
          boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving();
  
          if (enableChildrenLayers != mChildrenLayersEnabled) {
              mChildrenLayersEnabled = enableChildrenLayers;
              if (mChildrenLayersEnabled) {
                  enableHwLayersOnVisiblePages();
              } else {
                  for (int i = 0; i < getPageCount(); i++) {
                      final CellLayout cl = (CellLayout) getChildAt(i);
                      cl.enableHardwareLayer(false);
                  }
              }
          }
      }
  
      private void enableHwLayersOnVisiblePages() {
          if (mChildrenLayersEnabled) {
              final int screenCount = getChildCount();
              getVisiblePages(mTempVisiblePagesRange);
              int leftScreen = mTempVisiblePagesRange[0];
              int rightScreen = mTempVisiblePagesRange[1];
              if (leftScreen == rightScreen) {
                  // make sure we're caching at least two pages always
                  if (rightScreen < screenCount - 1) {
                      rightScreen++;
                  } else if (leftScreen > 0) {
                      leftScreen--;
                  }
              }
  
              final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID);
              for (int i = 0; i < screenCount; i++) {
                  final CellLayout layout = (CellLayout) getPageAt(i);
  
                  // enable layers between left and right screen inclusive, except for the
                  // customScreen, which may animate its content during transitions.
                  boolean enableLayer = layout != customScreen &&
                          leftScreen <= i && i <= rightScreen && shouldDrawChild(layout);
                  layout.enableHardwareLayer(enableLayer);
              }
          }
      }
  
      public void buildPageHardwareLayers() {
          // force layers to be enabled just for the call to buildLayer
          updateChildrenLayersEnabled(true);
          if (getWindowToken() != null) {
              final int childCount = getChildCount();
              for (int i = 0; i < childCount; i++) {
                  CellLayout cl = (CellLayout) getChildAt(i);
                  cl.buildHardwareLayer();
              }
          }
          updateChildrenLayersEnabled(false);
      }
  
      protected void onWallpaperTap(MotionEvent ev) {
          final int[] position = mTempCell;
          getLocationOnScreen(position);
  
          int pointerIndex = ev.getActionIndex();
          position[0] += (int) ev.getX(pointerIndex);
          position[1] += (int) ev.getY(pointerIndex);
  
          mWallpaperManager.sendWallpaperCommand(getWindowToken(),
                  ev.getAction() == MotionEvent.ACTION_UP
                          ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP,
                  position[0], position[1], 0, null);
      }
  
      /*
       * This interpolator emulates the rate at which the perceived scale of an object changes
       * as its distance from a camera increases. When this interpolator is applied to a scale
       * animation on a view, it evokes the sense that the object is shrinking due to moving away
       * from the camera.
       */
      static class ZInterpolator implements TimeInterpolator {
          private float focalLength;
  
          public ZInterpolator(float foc) {
              focalLength = foc;
          }
  
          public float getInterpolation(float input) {
              return (1.0f - focalLength / (focalLength + input)) /
                  (1.0f - focalLength / (focalLength + 1.0f));
          }
      }
  
      /*
       * The exact reverse of ZInterpolator.
       */
      static class InverseZInterpolator implements TimeInterpolator {
          private ZInterpolator zInterpolator;
          public InverseZInterpolator(float foc) {
              zInterpolator = new ZInterpolator(foc);
          }
          public float getInterpolation(float input) {
              return 1 - zInterpolator.getInterpolation(1 - input);
          }
      }
  
      /*
       * ZInterpolator compounded with an ease-out.
       */
      static class ZoomOutInterpolator implements TimeInterpolator {
          private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f);
          private final ZInterpolator zInterpolator = new ZInterpolator(0.13f);
  
          public float getInterpolation(float input) {
              return decelerate.getInterpolation(zInterpolator.getInterpolation(input));
          }
      }
  
      /*
       * InvereZInterpolator compounded with an ease-out.
       */
      static class ZoomInInterpolator implements TimeInterpolator {
          private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f);
          private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f);
  
          public float getInterpolation(float input) {
              return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input));
          }
      }
  
      private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator();
  
      /*
      *
      * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we
      * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace
      *
      * These methods mark the appropriate pages as accepting drops (which alters their visual
      * appearance).
      *
      */
      private static Rect getDrawableBounds(Drawable d) {
          Rect bounds = new Rect();
          d.copyBounds(bounds);
          if (bounds.width() == 0 || bounds.height() == 0) {
              bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
          } else {
              bounds.offsetTo(0, 0);
          }
          if (d instanceof PreloadIconDrawable) {
              int inset = -((PreloadIconDrawable) d).getOutset();
              bounds.inset(inset, inset);
          }
          return bounds;
      }
  
      public void onExternalDragStartedWithItem(View v) {
          // Compose a drag bitmap with the view scaled to the icon size
          LauncherAppState app = LauncherAppState.getInstance();
          DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
          int iconSize = grid.iconSizePx;
          int bmpWidth = v.getMeasuredWidth();
          int bmpHeight = v.getMeasuredHeight();
  
          // If this is a text view, use its drawable instead
          if (v instanceof TextView) {
              TextView tv = (TextView) v;
              Drawable d = tv.getCompoundDrawables()[1];
              Rect bounds = getDrawableBounds(d);
              bmpWidth = bounds.width();
              bmpHeight = bounds.height();
          }
  
          // Compose the bitmap to create the icon from
          Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight,
                  Bitmap.Config.ARGB_8888);
          mCanvas.setBitmap(b);
          drawDragView(v, mCanvas, 0);
          mCanvas.setBitmap(null);
  
          // The outline is used to visualize where the item will land if dropped
          mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true);
      }
  
      public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) {
          int[] size = estimateItemSize(info.spanX, info.spanY, info, false);
  
          // The outline is used to visualize where the item will land if dropped
          mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha);
      }
  
      public void exitWidgetResizeMode() {
          DragLayer dragLayer = mLauncher.getDragLayer();
          dragLayer.clearAllResizeFrames();
      }
  
      private void initAnimationArrays() {
          final int childCount = getChildCount();
          if (mLastChildCount == childCount) return;
  
          mOldBackgroundAlphas = new float[childCount];
          mOldAlphas = new float[childCount];
          mNewBackgroundAlphas = new float[childCount];
          mNewAlphas = new float[childCount];
      }
  
      Animator getChangeStateAnimation(final State state, boolean animated,
              ArrayList<View> layerViews) {
          return getChangeStateAnimation(state, animated, 0, -1, layerViews);
      }
  
      @Override
      protected void getFreeScrollPageRange(int[] range) {
          getOverviewModePages(range);
      }
  
      private void getOverviewModePages(int[] range) {
          int start = numCustomPages();
          int end = getChildCount() - 1;
  
          range[0] = Math.max(0, Math.min(start, getChildCount() - 1));
          range[1] = Math.max(0,  end);
      }
  
      protected void onStartReordering() {
          super.onStartReordering();
          showOutlines();
          // Reordering handles its own animations, disable the automatic ones.
          disableLayoutTransitions();
      }
  
      protected void onEndReordering() {
          super.onEndReordering();
  
          if (mLauncher.isWorkspaceLoading()) {
              // Invalid and dangerous operation if workspace is loading
              return;
          }
  
          hideOutlines();
          mScreenOrder.clear();
          int count = getChildCount();
          for (int i = 0; i < count; i++) {
              CellLayout cl = ((CellLayout) getChildAt(i));
              mScreenOrder.add(getIdForScreen(cl));
          }
  
          mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
  
          // Re-enable auto layout transitions for page deletion.
          enableLayoutTransitions();
      }
  
      public boolean isInOverviewMode() {
          return mState == State.OVERVIEW;
      }
  
      public boolean enterOverviewMode() {
          if (mTouchState != TOUCH_STATE_REST) {
              return false;
          }
          enableOverviewMode(true, -1, true);
          return true;
      }
  
      public void exitOverviewMode(boolean animated) {
          exitOverviewMode(-1, animated);
      }
  
      public void exitOverviewMode(int snapPage, boolean animated) {
          enableOverviewMode(false, snapPage, animated);
      }
  
      private void enableOverviewMode(boolean enable, int snapPage, boolean animated) {
          State finalState = Workspace.State.OVERVIEW;
          if (!enable) {
              finalState = Workspace.State.NORMAL;
          }
  
          Animator workspaceAnim = getChangeStateAnimation(finalState, animated, 0, snapPage);
          if (workspaceAnim != null) {
              onTransitionPrepare();
              workspaceAnim.addListener(new AnimatorListenerAdapter() {
                  @Override
                  public void onAnimationEnd(Animator arg0) {
                      onTransitionEnd();
                  }
              });
              workspaceAnim.start();
          }
      }
  
      int getOverviewModeTranslationY() {
          LauncherAppState app = LauncherAppState.getInstance();
          DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
          Rect overviewBar = grid.getOverviewModeButtonBarRect();
  
          int availableHeight = getViewportHeight();
          int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight());
          int offsetFromTopEdge = (availableHeight - scaledHeight) / 2;
          int offsetToCenterInOverview = (availableHeight - mInsets.top - overviewBar.height()
                  - scaledHeight) / 2;
  
          return -offsetFromTopEdge + mInsets.top + offsetToCenterInOverview;
      }
  
      public void updateInteractionForState() {
          if (mState != State.NORMAL) {
              mLauncher.onInteractionBegin();
          } else {
              mLauncher.onInteractionEnd();
          }
      }
  
      private void setState(State state) {
          mState = state;
          updateInteractionForState();
          updateAccessibilityFlags();
      }
  
      State getState() {
          return mState;
      }
  
      private void updateAccessibilityFlags() {
          int accessible = mState == State.NORMAL ?
                  ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES :
                  ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
          setImportantForAccessibility(accessible);
      }
  
      private static final int HIDE_WORKSPACE_DURATION = 100;
  
      Animator getChangeStateAnimation(final State state, boolean animated, int delay, int snapPage) {
          return getChangeStateAnimation(state, animated, delay, snapPage, null);
      }
  
      Animator getChangeStateAnimation(final State state, boolean animated, int delay, int snapPage,
              ArrayList<View> layerViews) {
          if (mState == state) {
              return null;
          }
  
          // Initialize animation arrays for the first time if necessary
          initAnimationArrays();
  
          AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null;
  
          // We only want a single instance of a workspace animation to be running at once, so
          // we cancel any incomplete transition.
          if (mStateAnimator != null) {
              mStateAnimator.cancel();
          }
          mStateAnimator = anim;
  
          final State oldState = mState;
          final boolean oldStateIsNormal = (oldState == State.NORMAL);
          final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED);
          final boolean oldStateIsNormalHidden = (oldState == State.NORMAL_HIDDEN);
          final boolean oldStateIsOverviewHidden = (oldState == State.OVERVIEW_HIDDEN);
          final boolean oldStateIsOverview = (oldState == State.OVERVIEW);
          setState(state);
          final boolean stateIsNormal = (state == State.NORMAL);
          final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED);
          final boolean stateIsNormalHidden = (state == State.NORMAL_HIDDEN);
          final boolean stateIsOverviewHidden = (state == State.OVERVIEW_HIDDEN);
          final boolean stateIsOverview = (state == State.OVERVIEW);
          float finalBackgroundAlpha = (stateIsSpringLoaded || stateIsOverview) ? 1.0f : 0f;
          float finalHotseatAndPageIndicatorAlpha = (stateIsNormal || stateIsSpringLoaded) ? 1f : 0f;
          float finalOverviewPanelAlpha = stateIsOverview ? 1f : 0f;
          float finalSearchBarAlpha = !stateIsNormal ? 0f : 1f;
          float finalWorkspaceTranslationY = stateIsOverview || stateIsOverviewHidden ?
                  getOverviewModeTranslationY() : 0;
  
          boolean workspaceToAllApps = (oldStateIsNormal && stateIsNormalHidden);
          boolean overviewToAllApps = (oldStateIsOverview && stateIsOverviewHidden);
          boolean allAppsToWorkspace = (stateIsNormalHidden && stateIsNormal);
          boolean workspaceToOverview = (oldStateIsNormal && stateIsOverview);
          boolean overviewToWorkspace = (oldStateIsOverview && stateIsNormal);
  
          mNewScale = 1.0f;
  
          if (oldStateIsOverview) {
              disableFreeScroll();
          } else if (stateIsOverview) {
              enableFreeScroll();
          }
  
          if (state != State.NORMAL) {
              if (stateIsSpringLoaded) {
                  mNewScale = mSpringLoadedShrinkFactor;
              } else if (stateIsOverview || stateIsOverviewHidden) {
                  mNewScale = mOverviewModeShrinkFactor;
              }
          }
  
          final int duration;
          if (workspaceToAllApps || overviewToAllApps) {
              duration = HIDE_WORKSPACE_DURATION; //getResources().getInteger(R.integer.config_workspaceUnshrinkTime);
          } else if (workspaceToOverview || overviewToWorkspace) {
              duration = getResources().getInteger(R.integer.config_overviewTransitionTime);
          } else {
              duration = getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime);
          }
  
          if (snapPage == -1) {
              snapPage = getPageNearestToCenterOfScreen();
          }
          snapToPage(snapPage, duration, mZoomInInterpolator);
  
          for (int i = 0; i < getChildCount(); i++) {
              final CellLayout cl = (CellLayout) getChildAt(i);
              boolean isCurrentPage = (i == snapPage);
              float initialAlpha = cl.getShortcutsAndWidgets().getAlpha();
              float finalAlpha;
              if (stateIsNormalHidden || stateIsOverviewHidden) {
                  finalAlpha = 0f;
              } else if (stateIsNormal && mWorkspaceFadeInAdjacentScreens) {
                  finalAlpha = (i == snapPage || i < numCustomPages()) ? 1f : 0f;
              } else {
                  finalAlpha = 1f;
              }
  
              // If we are animating to/from the small state, then hide the side pages and fade the
              // current page in
              if (!mIsSwitchingState) {
                  if (workspaceToAllApps || allAppsToWorkspace) {
                      if (allAppsToWorkspace && isCurrentPage) {
                          initialAlpha = 0f;
                      } else if (!isCurrentPage) {
                          initialAlpha = finalAlpha = 0f;
                      }
                      cl.setShortcutAndWidgetAlpha(initialAlpha);
                  }
              }
  
              mOldAlphas[i] = initialAlpha;
              mNewAlphas[i] = finalAlpha;
              if (animated) {
                  mOldBackgroundAlphas[i] = cl.getBackgroundAlpha();
                  mNewBackgroundAlphas[i] = finalBackgroundAlpha;
              } else {
                  cl.setBackgroundAlpha(finalBackgroundAlpha);
                  cl.setShortcutAndWidgetAlpha(finalAlpha);
              }
          }
  
          final View searchBar = mLauncher.getQsbBar();
          final View overviewPanel = mLauncher.getOverviewPanel();
          final View hotseat = mLauncher.getHotseat();
          final View pageIndicator = getPageIndicator();
          if (animated) {
              LauncherViewPropertyAnimator scale = new LauncherViewPropertyAnimator(this);
              scale.scaleX(mNewScale)
                  .scaleY(mNewScale)
                  .translationY(finalWorkspaceTranslationY)
                  .setDuration(duration)
                  .setInterpolator(mZoomInInterpolator);
              anim.play(scale);
              for (int index = 0; index < getChildCount(); index++) {
                  final int i = index;
                  final CellLayout cl = (CellLayout) getChildAt(i);
                  float currentAlpha = cl.getShortcutsAndWidgets().getAlpha();
                  if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) {
                      cl.setBackgroundAlpha(mNewBackgroundAlphas[i]);
                      cl.setShortcutAndWidgetAlpha(mNewAlphas[i]);
                  } else {
                      if (layerViews != null) {
                          layerViews.add(cl);
                      }
                      if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) {
                          LauncherViewPropertyAnimator alphaAnim =
                              new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets());
                          alphaAnim.alpha(mNewAlphas[i])
                              .setDuration(duration)
                              .setInterpolator(mZoomInInterpolator);
                          anim.play(alphaAnim);
                      }
                      if (mOldBackgroundAlphas[i] != 0 ||
                          mNewBackgroundAlphas[i] != 0) {
                          ValueAnimator bgAnim =
                                  LauncherAnimUtils.ofFloat(cl, 0f, 1f);
                          bgAnim.setInterpolator(mZoomInInterpolator);
                          bgAnim.setDuration(duration);
                          bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() {
                                  public void onAnimationUpdate(float a, float b) {
                                      cl.setBackgroundAlpha(
                                              a * mOldBackgroundAlphas[i] +
                                              b * mNewBackgroundAlphas[i]);
                                  }
                              });
                          anim.play(bgAnim);
                      }
                  }
              }
              Animator pageIndicatorAlpha = null;
              if (pageIndicator != null) {
                  pageIndicatorAlpha = new LauncherViewPropertyAnimator(pageIndicator)
                      .alpha(finalHotseatAndPageIndicatorAlpha).withLayer();
                  pageIndicatorAlpha.addListener(new AlphaUpdateListener(pageIndicator));
              } else {
                  // create a dummy animation so we don't need to do null checks later
                  pageIndicatorAlpha = ValueAnimator.ofFloat(0, 0);
              }
  
              Animator hotseatAlpha = new LauncherViewPropertyAnimator(hotseat)
                  .alpha(finalHotseatAndPageIndicatorAlpha).withLayer();
              hotseatAlpha.addListener(new AlphaUpdateListener(hotseat));
  
              Animator overviewPanelAlpha = new LauncherViewPropertyAnimator(overviewPanel)
                  .alpha(finalOverviewPanelAlpha).withLayer();
              overviewPanelAlpha.addListener(new AlphaUpdateListener(overviewPanel));
  
              // For animation optimations, we may need to provide the Launcher transition
              // with a set of views on which to force build layers in certain scenarios.
              hotseat.setLayerType(View.LAYER_TYPE_HARDWARE, null);
              overviewPanel.setLayerType(View.LAYER_TYPE_HARDWARE, null);
              if (layerViews != null) {
                  layerViews.add(hotseat);
                  layerViews.add(overviewPanel);
              }
  
              if (workspaceToOverview) {
                  pageIndicatorAlpha.setInterpolator(new DecelerateInterpolator(2));
                  hotseatAlpha.setInterpolator(new DecelerateInterpolator(2));
                  overviewPanelAlpha.setInterpolator(null);
              } else if (overviewToWorkspace) {
                  pageIndicatorAlpha.setInterpolator(null);
                  hotseatAlpha.setInterpolator(null);
                  overviewPanelAlpha.setInterpolator(new DecelerateInterpolator(2));
              }
  
              overviewPanelAlpha.setDuration(duration);
              pageIndicatorAlpha.setDuration(duration);
              hotseatAlpha.setDuration(duration);
  
              if (searchBar != null) {
                  Animator searchBarAlpha = new LauncherViewPropertyAnimator(searchBar)
                      .alpha(finalSearchBarAlpha).withLayer();
                  searchBarAlpha.addListener(new AlphaUpdateListener(searchBar));
                  searchBar.setLayerType(View.LAYER_TYPE_HARDWARE, null);
                  if (layerViews != null) {
                      layerViews.add(searchBar);
                  }
                  searchBarAlpha.setDuration(duration);
                  anim.play(searchBarAlpha);
              }
  
              anim.play(overviewPanelAlpha);
              anim.play(hotseatAlpha);
              anim.play(pageIndicatorAlpha);
              anim.setStartDelay(delay);
              anim.addListener(new AnimatorListenerAdapter() {
                  @Override
                  public void onAnimationEnd(Animator animation) {
                      mStateAnimator = null;
                  }
              });
          } else {
              overviewPanel.setAlpha(finalOverviewPanelAlpha);
              AlphaUpdateListener.updateVisibility(overviewPanel);
              hotseat.setAlpha(finalHotseatAndPageIndicatorAlpha);
              AlphaUpdateListener.updateVisibility(hotseat);
              if (pageIndicator != null) {
                  pageIndicator.setAlpha(finalHotseatAndPageIndicatorAlpha);
                  AlphaUpdateListener.updateVisibility(pageIndicator);
              }
              if (searchBar != null) {
                  searchBar.setAlpha(finalSearchBarAlpha);
                  AlphaUpdateListener.updateVisibility(searchBar);
              }
              updateCustomContentVisibility();
              setScaleX(mNewScale);
              setScaleY(mNewScale);
              setTranslationY(finalWorkspaceTranslationY);
          }
  
          if (stateIsNormal) {
              animateBackgroundGradient(0f, animated);
          } else {
              animateBackgroundGradient(getResources().getInteger(
                      R.integer.config_workspaceScrimAlpha) / 100f, animated);
          }
          return anim;
      }
  
      static class AlphaUpdateListener implements AnimatorUpdateListener, AnimatorListener {
          View view;
          public AlphaUpdateListener(View v) {
              view = v;
          }
  
          @Override
          public void onAnimationUpdate(ValueAnimator arg0) {
              updateVisibility(view);
          }
  
          public static void updateVisibility(View view) {
              // We want to avoid the extra layout pass by setting the views to GONE unless
              // accessibility is on, in which case not setting them to GONE causes a glitch.
              int invisibleState = sAccessibilityEnabled ? GONE : INVISIBLE;
              if (view.getAlpha() < ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != invisibleState) {
                  view.setVisibility(invisibleState);
              } else if (view.getAlpha() > ALPHA_CUTOFF_THRESHOLD
                      && view.getVisibility() != VISIBLE) {
                  view.setVisibility(VISIBLE);
              }
          }
  
          @Override
          public void onAnimationCancel(Animator arg0) {
          }
  
          @Override
          public void onAnimationEnd(Animator arg0) {
              updateVisibility(view);
          }
  
          @Override
          public void onAnimationRepeat(Animator arg0) {
          }
  
          @Override
          public void onAnimationStart(Animator arg0) {
              // We want the views to be visible for animation, so fade-in/out is visible
              view.setVisibility(VISIBLE);
          }
      }
  
      @Override
      public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) {
          onTransitionPrepare();
      }
  
      @Override
      public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) {
      }
  
      @Override
      public void onLauncherTransitionStep(Launcher l, float t) {
          mTransitionProgress = t;
      }
  
      @Override
      public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) {
          onTransitionEnd();
      }
  
      private void onTransitionPrepare() {
          mIsSwitchingState = true;
  
          // Invalidate here to ensure that the pages are rendered during the state change transition.
          invalidate();
  
          updateChildrenLayersEnabled(false);
          hideCustomContentIfNecessary();
      }
  
      void updateCustomContentVisibility() {
          int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE;
          if (hasCustomContent()) {
              mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility);
          }
      }
  
      void showCustomContentIfNecessary() {
          boolean show  = mState == Workspace.State.NORMAL;
          if (show && hasCustomContent()) {
              mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE);
          }
      }
  
      void hideCustomContentIfNecessary() {
          boolean hide  = mState != Workspace.State.NORMAL;
          if (hide && hasCustomContent()) {
              disableLayoutTransitions();
              mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE);
              enableLayoutTransitions();
          }
      }
  
      private void onTransitionEnd() {
          mIsSwitchingState = false;
          updateChildrenLayersEnabled(false);
          showCustomContentIfNecessary();
      }
  
      @Override
      public View getContent() {
          return this;
      }
  
      /**
       * Draw the View v into the given Canvas.
       *
       * @param v the view to draw
       * @param destCanvas the canvas to draw on
       * @param padding the horizontal and vertical padding to use when drawing
       */
      private static void drawDragView(View v, Canvas destCanvas, int padding) {
          final Rect clipRect = sTempRect;
          v.getDrawingRect(clipRect);
  
          boolean textVisible = false;
  
          destCanvas.save();
          if (v instanceof TextView) {
              Drawable d = ((TextView) v).getCompoundDrawables()[1];
              Rect bounds = getDrawableBounds(d);
              clipRect.set(0, 0, bounds.width() + padding, bounds.height() + padding);
              destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top);
              d.draw(destCanvas);
          } else {
              if (v instanceof FolderIcon) {
                  // For FolderIcons the text can bleed into the icon area, and so we need to
                  // hide the text completely (which can't be achieved by clipping).
                  if (((FolderIcon) v).getTextVisible()) {
                      ((FolderIcon) v).setTextVisible(false);
                      textVisible = true;
                  }
              }
              destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2);
              destCanvas.clipRect(clipRect, Op.REPLACE);
              v.draw(destCanvas);
  
              // Restore text visibility of FolderIcon if necessary
              if (textVisible) {
                  ((FolderIcon) v).setTextVisible(true);
              }
          }
          destCanvas.restore();
      }
  
      /**
       * Returns a new bitmap to show when the given View is being dragged around.
       * Responsibility for the bitmap is transferred to the caller.
       * @param expectedPadding padding to add to the drag view. If a different padding was used
       * its value will be changed
       */
      public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) {
          Bitmap b;
  
          int padding = expectedPadding.get();
          if (v instanceof TextView) {
              Drawable d = ((TextView) v).getCompoundDrawables()[1];
              Rect bounds = getDrawableBounds(d);
              b = Bitmap.createBitmap(bounds.width() + padding,
                      bounds.height() + padding, Bitmap.Config.ARGB_8888);
              expectedPadding.set(padding - bounds.left - bounds.top);
          } else {
              b = Bitmap.createBitmap(
                      v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888);
          }
  
          mCanvas.setBitmap(b);
          drawDragView(v, mCanvas, padding);
          mCanvas.setBitmap(null);
  
          return b;
      }
  
      /**
       * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
       * Responsibility for the bitmap is transferred to the caller.
       */
      private Bitmap createDragOutline(View v, int padding) {
          final int outlineColor = getResources().getColor(R.color.outline_color);
          final Bitmap b = Bitmap.createBitmap(
                  v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888);
  
          mCanvas.setBitmap(b);
          drawDragView(v, mCanvas, padding);
          mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor);
          mCanvas.setBitmap(null);
          return b;
      }
  
      /**
       * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
       * Responsibility for the bitmap is transferred to the caller.
       */
      private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h,
              boolean clipAlpha) {
          final int outlineColor = getResources().getColor(R.color.outline_color);
          final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
          mCanvas.setBitmap(b);
  
          Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight());
          float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(),
                  (h - padding) / (float) orig.getHeight());
          int scaledWidth = (int) (scaleFactor * orig.getWidth());
          int scaledHeight = (int) (scaleFactor * orig.getHeight());
          Rect dst = new Rect(0, 0, scaledWidth, scaledHeight);
  
          // center the image
          dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2);
  
          mCanvas.drawBitmap(orig, src, dst, null);
          mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor,
                  clipAlpha);
          mCanvas.setBitmap(null);
  
          return b;
      }
  
      void startDrag(CellLayout.CellInfo cellInfo) {
          View child = cellInfo.cell;
  
          // Make sure the drag was started by a long press as opposed to a long click.
          if (!child.isInTouchMode()) {
              return;
          }
  
          mDragInfo = cellInfo;
          child.setVisibility(INVISIBLE);
          CellLayout layout = (CellLayout) child.getParent().getParent();
          layout.prepareChildForDrag(child);
  
          beginDragShared(child, this);
      }
  
      public void beginDragShared(View child, DragSource source) {
          child.clearFocus();
          child.setPressed(false);
  
          // The outline is used to visualize where the item will land if dropped
          mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING);
  
          mLauncher.onDragStarted(child);
          // The drag bitmap follows the touch point around on the screen
          AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING);
          final Bitmap b = createDragBitmap(child, padding);
  
          final int bmpWidth = b.getWidth();
          final int bmpHeight = b.getHeight();
  
          float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY);
          int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2);
          int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2
                          - padding.get() / 2);
  
          LauncherAppState app = LauncherAppState.getInstance();
          DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
          Point dragVisualizeOffset = null;
          Rect dragRect = null;
          if (child instanceof BubbleTextView) {
              int iconSize = grid.iconSizePx;
              int top = child.getPaddingTop();
              int left = (bmpWidth - iconSize) / 2;
              int right = left + iconSize;
              int bottom = top + iconSize;
              dragLayerY += top;
              // Note: The drag region is used to calculate drag layer offsets, but the
              // dragVisualizeOffset in addition to the dragRect (the size) to position the outline.
              dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2);
              dragRect = new Rect(left, top, right, bottom);
          } else if (child instanceof FolderIcon) {
              int previewSize = grid.folderIconSizePx;
              dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize);
          }
  
          // Clear the pressed state if necessary
          if (child instanceof BubbleTextView) {
              BubbleTextView icon = (BubbleTextView) child;
              icon.clearPressedBackground();
          }
  
          if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) {
              String msg = "Drag started with a view that has no tag set. This "
                      + "will cause a crash (issue 11627249) down the line. "
                      + "View: " + child + "  tag: " + child.getTag();
              throw new IllegalStateException(msg);
          }
  
          DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(),
                  DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale);
          dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor());
  
          if (child.getParent() instanceof ShortcutAndWidgetContainer) {
              mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent();
          }
  
          b.recycle();
      }
  
      public void beginExternalDragShared(View child, DragSource source) {
          LauncherAppState app = LauncherAppState.getInstance();
          DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
          int iconSize = grid.iconSizePx;
  
          // Notify launcher of drag start
          mLauncher.onDragStarted(child);
  
          // Compose a new drag bitmap that is of the icon size
          AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING);
          final Bitmap tmpB = createDragBitmap(child, padding);
          Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888);
          Paint p = new Paint();
          p.setFilterBitmap(true);
          mCanvas.setBitmap(b);
          mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()),
                  new Rect(0, 0, iconSize, iconSize), p);
          mCanvas.setBitmap(null);
  
          // Find the child's location on the screen
          int bmpWidth = tmpB.getWidth();
          float iconScale = (float) bmpWidth / iconSize;
          float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale;
          int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2);
          int dragLayerY = Math.round(mTempXY[1]);
  
          // Note: The drag region is used to calculate drag layer offsets, but the
          // dragVisualizeOffset in addition to the dragRect (the size) to position the outline.
          Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2);
          Rect dragRect = new Rect(0, 0, iconSize, iconSize);
  
          if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) {
              String msg = "Drag started with a view that has no tag set. This "
                      + "will cause a crash (issue 11627249) down the line. "
                      + "View: " + child + "  tag: " + child.getTag();
              throw new IllegalStateException(msg);
          }
  
          // Start the drag
          DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(),
                  DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale);
          dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor());
  
          // Recycle temporary bitmaps
          tmpB.recycle();
      }
  
      void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, long screenId,
              int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) {
          View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info);
  
          final int[] cellXY = new int[2];
          target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY);
          addInScreen(view, container, screenId, cellXY[0], cellXY[1], 1, 1, insertAtFirst);
  
          LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, cellXY[0],
                  cellXY[1]);
      }
  
      public boolean transitionStateShouldAllowDrop() {
          return ((!isSwitchingState() || mTransitionProgress > 0.5f) &&
                  (mState == State.NORMAL || mState == State.SPRING_LOADED));
      }
  
      /**
       * {@inheritDoc}
       */
      public boolean acceptDrop(DragObject d) {
          // If it's an external drop (e.g. from All Apps), check if it should be accepted
          CellLayout dropTargetLayout = mDropToLayout;
          if (d.dragSource != this) {
              // Don't accept the drop if we're not over a screen at time of drop
              if (dropTargetLayout == null) {
                  return false;
              }
              if (!transitionStateShouldAllowDrop()) return false;
  
              mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset,
                      d.dragView, mDragViewVisualCenter);
  
              // We want the point to be mapped to the dragTarget.
              if (mLauncher.isHotseatLayout(dropTargetLayout)) {
                  mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
              } else {
                  mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null);
              }
  
              int spanX = 1;
              int spanY = 1;
              if (mDragInfo != null) {
                  final CellLayout.CellInfo dragCellInfo = mDragInfo;
                  spanX = dragCellInfo.spanX;
                  spanY = dragCellInfo.spanY;
              } else {
                  final ItemInfo dragInfo = (ItemInfo) d.dragInfo;
                  spanX = dragInfo.spanX;
                  spanY = dragInfo.spanY;
              }
  
              int minSpanX = spanX;
              int minSpanY = spanY;
              if (d.dragInfo instanceof PendingAddWidgetInfo) {
                  minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX;
                  minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY;
              }
  
              mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
                      (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout,
                      mTargetCell);
              float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0],
                      mDragViewVisualCenter[1], mTargetCell);
              if (mCreateUserFolderOnDrop && willCreateUserFolder((ItemInfo) d.dragInfo,
                      dropTargetLayout, mTargetCell, distance, true)) {
                  return true;
              }
  
              if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder((ItemInfo) d.dragInfo,
                      dropTargetLayout, mTargetCell, distance)) {
                  return true;
              }
  
              int[] resultSpan = new int[2];
              mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0],
                      (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY,
                      null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP);
              boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0;
  
              // Don't accept the drop if there's no room for the item
              if (!foundCell) {
                  // Don't show the message if we are dropping on the AllApps button and the hotseat
                  // is full
                  boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout);
                  if (mTargetCell != null && isHotseat) {
                      Hotseat hotseat = mLauncher.getHotseat();
                      if (hotseat.isAllAppsButtonRank(
                              hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) {
                          return false;
                      }
                  }
  
                  mLauncher.showOutOfSpaceMessage(isHotseat);
                  return false;
              }
          }
  
          long screenId = getIdForScreen(dropTargetLayout);
          if (screenId == EXTRA_EMPTY_SCREEN_ID) {
              commitExtraEmptyScreen();
          }
  
          return true;
      }
  
      boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float
              distance, boolean considerTimeout) {
          if (distance > mMaxDistanceForFolderCreation) return false;
          View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
  
          if (dropOverView != null) {
              CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams();
              if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) {
                  return false;
              }
          }
  
          boolean hasntMoved = false;
          if (mDragInfo != null) {
              hasntMoved = dropOverView == mDragInfo.cell;
          }
  
          if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) {
              return false;
          }
  
          boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo);
          boolean willBecomeShortcut =
                  (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
                  info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT);
  
          return (aboveShortcut && willBecomeShortcut);
      }
  
      boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell,
              float distance) {
          if (distance > mMaxDistanceForFolderCreation) return false;
          View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
  
          if (dropOverView != null) {
              CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams();
              if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) {
                  return false;
              }
          }
  
          if (dropOverView instanceof FolderIcon) {
              FolderIcon fi = (FolderIcon) dropOverView;
              if (fi.acceptDrop(dragInfo)) {
                  return true;
              }
          }
          return false;
      }
  
      boolean createUserFolderIfNecessary(View newView, long container, CellLayout target,
              int[] targetCell, float distance, boolean external, DragView dragView,
              Runnable postAnimationRunnable) {
          if (distance > mMaxDistanceForFolderCreation) return false;
          View v = target.getChildAt(targetCell[0], targetCell[1]);
  
          boolean hasntMoved = false;
          if (mDragInfo != null) {
              CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell);
              hasntMoved = (mDragInfo.cellX == targetCell[0] &&
                      mDragInfo.cellY == targetCell[1]) && (cellParent == target);
          }
  
          if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false;
          mCreateUserFolderOnDrop = false;
          final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target);
  
          boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo);
          boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo);
  
          if (aboveShortcut && willBecomeShortcut) {
              ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag();
              ShortcutInfo destInfo = (ShortcutInfo) v.getTag();
              // if the drag started here, we need to remove it from the workspace
              if (!external) {
                  getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell);
              }
  
              Rect folderLocation = new Rect();
              float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation);
              target.removeView(v);
  
              FolderIcon fi =
                  mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]);
              destInfo.cellX = -1;
              destInfo.cellY = -1;
              sourceInfo.cellX = -1;
              sourceInfo.cellY = -1;
  
              // If the dragView is null, we can't animate
              boolean animate = dragView != null;
              if (animate) {
                  fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale,
                          postAnimationRunnable);
              } else {
                  fi.addItem(destInfo);
                  fi.addItem(sourceInfo);
              }
              return true;
          }
          return false;
      }
  
      boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell,
              float distance, DragObject d, boolean external) {
          if (distance > mMaxDistanceForFolderCreation) return false;
  
          View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
          if (!mAddToExistingFolderOnDrop) return false;
          mAddToExistingFolderOnDrop = false;
  
          if (dropOverView instanceof FolderIcon) {
              FolderIcon fi = (FolderIcon) dropOverView;
              if (fi.acceptDrop(d.dragInfo)) {
                  fi.onDrop(d);
  
                  // if the drag started here, we need to remove it from the workspace
                  if (!external) {
                      getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell);
                  }
                  return true;
              }
          }
          return false;
      }
  
      public void onDrop(final DragObject d) {
          mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView,
                  mDragViewVisualCenter);
  
          CellLayout dropTargetLayout = mDropToLayout;
  
          // We want the point to be mapped to the dragTarget.
          if (dropTargetLayout != null) {
              if (mLauncher.isHotseatLayout(dropTargetLayout)) {
                  mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
              } else {
                  mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null);
              }
          }
  
          int snapScreen = -1;
          boolean resizeOnDrop = false;
          if (d.dragSource != this) {
              final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0],
                      (int) mDragViewVisualCenter[1] };
              onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d);
          } else if (mDragInfo != null) {
              final View cell = mDragInfo.cell;
  
              Runnable resizeRunnable = null;
              if (dropTargetLayout != null && !d.cancelled) {
                  // Move internally
                  boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout);
                  boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout);
                  long container = hasMovedIntoHotseat ?
                          LauncherSettings.Favorites.CONTAINER_HOTSEAT :
                          LauncherSettings.Favorites.CONTAINER_DESKTOP;
                  long screenId = (mTargetCell[0] < 0) ?
                          mDragInfo.screenId : getIdForScreen(dropTargetLayout);
                  int spanX = mDragInfo != null ? mDragInfo.spanX : 1;
                  int spanY = mDragInfo != null ? mDragInfo.spanY : 1;
                  // First we find the cell nearest to point at which the item is
                  // dropped, without any consideration to whether there is an item there.
  
                  mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int)
                          mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell);
                  float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0],
                          mDragViewVisualCenter[1], mTargetCell);
  
                  // If the item being dropped is a shortcut and the nearest drop
                  // cell also contains a shortcut, then create a folder with the two shortcuts.
                  if (!mInScrollArea && createUserFolderIfNecessary(cell, container,
                          dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) {
                      return;
                  }
  
                  if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell,
                          distance, d, false)) {
                      return;
                  }
  
                  // Aside from the special case where we're dropping a shortcut onto a shortcut,
                  // we need to find the nearest cell location that is vacant
                  ItemInfo item = (ItemInfo) d.dragInfo;
                  int minSpanX = item.spanX;
                  int minSpanY = item.spanY;
                  if (item.minSpanX > 0 && item.minSpanY > 0) {
                      minSpanX = item.minSpanX;
                      minSpanY = item.minSpanY;
                  }
  
                  int[] resultSpan = new int[2];
                  mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0],
                          (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell,
                          mTargetCell, resultSpan, CellLayout.MODE_ON_DROP);
  
                  boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0;
  
                  // if the widget resizes on drop
                  if (foundCell && (cell instanceof AppWidgetHostView) &&
                          (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) {
                      resizeOnDrop = true;
                      item.spanX = resultSpan[0];
                      item.spanY = resultSpan[1];
                      AppWidgetHostView awhv = (AppWidgetHostView) cell;
                      AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0],
                              resultSpan[1]);
                  }
  
                  if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) {
                      snapScreen = getPageIndexForScreenId(screenId);
                      snapToPage(snapScreen);
                  }
  
                  if (foundCell) {
                      final ItemInfo info = (ItemInfo) cell.getTag();
                      if (hasMovedLayouts) {
                          // Reparent the view
                          CellLayout parentCell = getParentCellLayoutForView(cell);
                          if (parentCell != null) {
                              parentCell.removeView(cell);
                          } else if (LauncherAppState.isDogfoodBuild()) {
                              throw new NullPointerException("mDragInfo.cell has null parent");
                          }
                          addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1],
                                  info.spanX, info.spanY);
                      }
  
                      // update the item's position after drop
                      CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams();
                      lp.cellX = lp.tmpCellX = mTargetCell[0];
                      lp.cellY = lp.tmpCellY = mTargetCell[1];
                      lp.cellHSpan = item.spanX;
                      lp.cellVSpan = item.spanY;
                      lp.isLockedToGrid = true;
  
                      if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT &&
                              cell instanceof LauncherAppWidgetHostView) {
                          final CellLayout cellLayout = dropTargetLayout;
                          // We post this call so that the widget has a chance to be placed
                          // in its final location
  
                          final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell;
                          AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo();
                          if (pinfo != null &&
                                  pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) {
                              final Runnable addResizeFrame = new Runnable() {
                                  public void run() {
                                      DragLayer dragLayer = mLauncher.getDragLayer();
                                      dragLayer.addResizeFrame(info, hostView, cellLayout);
                                  }
                              };
                              resizeRunnable = (new Runnable() {
                                  public void run() {
                                      if (!isPageMoving()) {
                                          addResizeFrame.run();
                                      } else {
                                          mDelayedResizeRunnable = addResizeFrame;
                                      }
                                  }
                              });
                          }
                      }
  
                      LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX,
                              lp.cellY, item.spanX, item.spanY);
                  } else {
                      // If we can't find a drop location, we return the item to its original position
                      CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams();
                      mTargetCell[0] = lp.cellX;
                      mTargetCell[1] = lp.cellY;
                      CellLayout layout = (CellLayout) cell.getParent().getParent();
                      layout.markCellsAsOccupiedForView(cell);
                  }
              }
  
              final CellLayout parent = (CellLayout) cell.getParent().getParent();
              final Runnable finalResizeRunnable = resizeRunnable;
              // Prepare it to be animated into its new position
              // This must be called after the view has been re-parented
              final Runnable onCompleteRunnable = new Runnable() {
                  @Override
                  public void run() {
                      mAnimatingViewIntoPlace = false;
                      updateChildrenLayersEnabled(false);
                      if (finalResizeRunnable != null) {
                          finalResizeRunnable.run();
                      }
                  }
              };
              mAnimatingViewIntoPlace = true;
              if (d.dragView.hasDrawn()) {
                  final ItemInfo info = (ItemInfo) cell.getTag();
                  if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) {
                      int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE :
                              ANIMATE_INTO_POSITION_AND_DISAPPEAR;
                      animateWidgetDrop(info, parent, d.dragView,
                              onCompleteRunnable, animationType, cell, false);
                  } else {
                      int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION;
                      mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration,
                              onCompleteRunnable, this);
                  }
              } else {
                  d.deferDragViewCleanupPostAnimation = false;
                  cell.setVisibility(VISIBLE);
              }
              parent.onDropChild(cell);
          }
      }
  
      public void setFinalScrollForPageChange(int pageIndex) {
          CellLayout cl = (CellLayout) getChildAt(pageIndex);
          if (cl != null) {
              mSavedScrollX = getScrollX();
              mSavedTranslationX = cl.getTranslationX();
              mSavedRotationY = cl.getRotationY();
              final int newX = getScrollForPage(pageIndex);
              setScrollX(newX);
              cl.setTranslationX(0f);
              cl.setRotationY(0f);
          }
      }
  
      public void resetFinalScrollForPageChange(int pageIndex) {
          if (pageIndex >= 0) {
              CellLayout cl = (CellLayout) getChildAt(pageIndex);
              setScrollX(mSavedScrollX);
              cl.setTranslationX(mSavedTranslationX);
              cl.setRotationY(mSavedRotationY);
          }
      }
  
      public void getViewLocationRelativeToSelf(View v, int[] location) {
          getLocationInWindow(location);
          int x = location[0];
          int y = location[1];
  
          v.getLocationInWindow(location);
          int vX = location[0];
          int vY = location[1];
  
          location[0] = vX - x;
          location[1] = vY - y;
      }
  
      public void onDragEnter(DragObject d) {
          mDragEnforcer.onDragEnter();
          mCreateUserFolderOnDrop = false;
          mAddToExistingFolderOnDrop = false;
  
          mDropToLayout = null;
          CellLayout layout = getCurrentDropLayout();
          setCurrentDropLayout(layout);
          setCurrentDragOverlappingLayout(layout);
  
          if (!workspaceInModalState()) {
              mLauncher.getDragLayer().showPageHints();
          }
      }
  
      /** Return a rect that has the cellWidth/cellHeight (left, top), and
       * widthGap/heightGap (right, bottom) */
      static Rect getCellLayoutMetrics(Launcher launcher, int orientation) {
          LauncherAppState app = LauncherAppState.getInstance();
          DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
  
          Display display = launcher.getWindowManager().getDefaultDisplay();
          Point smallestSize = new Point();
          Point largestSize = new Point();
          display.getCurrentSizeRange(smallestSize, largestSize);
          int countX = (int) grid.numColumns;
          int countY = (int) grid.numRows;
          if (orientation == CellLayout.LANDSCAPE) {
              if (mLandscapeCellLayoutMetrics == null) {
                  Rect padding = grid.getWorkspacePadding(CellLayout.LANDSCAPE);
                  int width = largestSize.x - padding.left - padding.right;
                  int height = smallestSize.y - padding.top - padding.bottom;
                  mLandscapeCellLayoutMetrics = new Rect();
                  mLandscapeCellLayoutMetrics.set(
                          grid.calculateCellWidth(width, countX),
                          grid.calculateCellHeight(height, countY), 0, 0);
              }
              return mLandscapeCellLayoutMetrics;
          } else if (orientation == CellLayout.PORTRAIT) {
              if (mPortraitCellLayoutMetrics == null) {
                  Rect padding = grid.getWorkspacePadding(CellLayout.PORTRAIT);
                  int width = smallestSize.x - padding.left - padding.right;
                  int height = largestSize.y - padding.top - padding.bottom;
                  mPortraitCellLayoutMetrics = new Rect();
                  mPortraitCellLayoutMetrics.set(
                          grid.calculateCellWidth(width, countX),
                          grid.calculateCellHeight(height, countY), 0, 0);
              }
              return mPortraitCellLayoutMetrics;
          }
          return null;
      }
  
      public void onDragExit(DragObject d) {
          mDragEnforcer.onDragExit();
  
          // Here we store the final page that will be dropped to, if the workspace in fact
          // receives the drop
          if (mInScrollArea) {
              if (isPageMoving()) {
                  // If the user drops while the page is scrolling, we should use that page as the
                  // destination instead of the page that is being hovered over.
                  mDropToLayout = (CellLayout) getPageAt(getNextPage());
              } else {
                  mDropToLayout = mDragOverlappingLayout;
              }
          } else {
              mDropToLayout = mDragTargetLayout;
          }
  
          if (mDragMode == DRAG_MODE_CREATE_FOLDER) {
              mCreateUserFolderOnDrop = true;
          } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) {
              mAddToExistingFolderOnDrop = true;
          }
  
          // Reset the scroll area and previous drag target
          onResetScrollArea();
          setCurrentDropLayout(null);
          setCurrentDragOverlappingLayout(null);
  
          mSpringLoadedDragController.cancel();
  
          if (!mIsPageMoving) {
              hideOutlines();
          }
          mLauncher.getDragLayer().hidePageHints();
      }
  
      void setCurrentDropLayout(CellLayout layout) {
          if (mDragTargetLayout != null) {
              mDragTargetLayout.revertTempState();
              mDragTargetLayout.onDragExit();
          }
          mDragTargetLayout = layout;
          if (mDragTargetLayout != null) {
              mDragTargetLayout.onDragEnter();
          }
          cleanupReorder(true);
          cleanupFolderCreation();
          setCurrentDropOverCell(-1, -1);
      }
  
      void setCurrentDragOverlappingLayout(CellLayout layout) {
          if (mDragOverlappingLayout != null) {
              mDragOverlappingLayout.setIsDragOverlapping(false);
          }
          mDragOverlappingLayout = layout;
          if (mDragOverlappingLayout != null) {
              mDragOverlappingLayout.setIsDragOverlapping(true);
          }
          invalidate();
      }
  
      void setCurrentDropOverCell(int x, int y) {
          if (x != mDragOverX || y != mDragOverY) {
              mDragOverX = x;
              mDragOverY = y;
              setDragMode(DRAG_MODE_NONE);
          }
      }
  
      void setDragMode(int dragMode) {
          if (dragMode != mDragMode) {
              if (dragMode == DRAG_MODE_NONE) {
                  cleanupAddToFolder();
                  // We don't want to cancel the re-order alarm every time the target cell changes
                  // as this feels to slow / unresponsive.
                  cleanupReorder(false);
                  cleanupFolderCreation();
              } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) {
                  cleanupReorder(true);
                  cleanupFolderCreation();
              } else if (dragMode == DRAG_MODE_CREATE_FOLDER) {
                  cleanupAddToFolder();
                  cleanupReorder(true);
              } else if (dragMode == DRAG_MODE_REORDER) {
                  cleanupAddToFolder();
                  cleanupFolderCreation();
              }
              mDragMode = dragMode;
          }
      }
  
      private void cleanupFolderCreation() {
          if (mDragFolderRingAnimator != null) {
              mDragFolderRingAnimator.animateToNaturalState();
              mDragFolderRingAnimator = null;
          }
          mFolderCreationAlarm.setOnAlarmListener(null);
          mFolderCreationAlarm.cancelAlarm();
      }
  
      private void cleanupAddToFolder() {
          if (mDragOverFolderIcon != null) {
              mDragOverFolderIcon.onDragExit(null);
              mDragOverFolderIcon = null;
          }
      }
  
      private void cleanupReorder(boolean cancelAlarm) {
          // Any pending reorders are canceled
          if (cancelAlarm) {
              mReorderAlarm.cancelAlarm();
          }
          mLastReorderX = -1;
          mLastReorderY = -1;
      }
  
     /*
      *
      * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's
      * coordinate space. The argument xy is modified with the return result.
      *
      * if cachedInverseMatrix is not null, this method will just use that matrix instead of
      * computing it itself; we use this to avoid redundant matrix inversions in
      * findMatchingPageForDragOver
      *
      */
     void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) {
         xy[0] = xy[0] - v.getLeft();
         xy[1] = xy[1] - v.getTop();
     }
  
     boolean isPointInSelfOverHotseat(int x, int y, Rect r) {
         if (r == null) {
             r = new Rect();
         }
         mTempPt[0] = x;
         mTempPt[1] = y;
         mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true);
  
         LauncherAppState app = LauncherAppState.getInstance();
         DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
         r = grid.getHotseatRect();
         if (r.contains(mTempPt[0], mTempPt[1])) {
             return true;
         }
         return false;
     }
  
     void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) {
         mTempPt[0] = (int) xy[0];
         mTempPt[1] = (int) xy[1];
         mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true);
         mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt);
  
         xy[0] = mTempPt[0];
         xy[1] = mTempPt[1];
     }
  
     /*
      *
      * Convert the 2D coordinate xy from this CellLayout's coordinate space to
      * the parent View's coordinate space. The argument xy is modified with the return result.
      *
      */
     void mapPointFromChildToSelf(View v, float[] xy) {
         xy[0] += v.getLeft();
         xy[1] += v.getTop();
     }
  
     static private float squaredDistance(float[] point1, float[] point2) {
          float distanceX = point1[0] - point2[0];
          float distanceY = point2[1] - point2[1];
          return distanceX * distanceX + distanceY * distanceY;
     }
  
      /*
       *
       * This method returns the CellLayout that is currently being dragged to. In order to drag
       * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second
       * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one
       *
       * Return null if no CellLayout is currently being dragged over
       *
       */
      private CellLayout findMatchingPageForDragOver(
              DragView dragView, float originX, float originY, boolean exact) {
          // We loop through all the screens (ie CellLayouts) and see which ones overlap
          // with the item being dragged and then choose the one that's closest to the touch point
          final int screenCount = getChildCount();
          CellLayout bestMatchingScreen = null;
          float smallestDistSoFar = Float.MAX_VALUE;
  
          for (int i = 0; i < screenCount; i++) {
              // The custom content screen is not a valid drag over option
              if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) {
                  continue;
              }
  
              CellLayout cl = (CellLayout) getChildAt(i);
  
              final float[] touchXy = {originX, originY};
              // Transform the touch coordinates to the CellLayout's local coordinates
              // If the touch point is within the bounds of the cell layout, we can return immediately
              cl.getMatrix().invert(mTempInverseMatrix);
              mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix);
  
              if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() &&
                      touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) {
                  return cl;
              }
  
              if (!exact) {
                  // Get the center of the cell layout in screen coordinates
                  final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates;
                  cellLayoutCenter[0] = cl.getWidth()/2;
                  cellLayoutCenter[1] = cl.getHeight()/2;
                  mapPointFromChildToSelf(cl, cellLayoutCenter);
  
                  touchXy[0] = originX;
                  touchXy[1] = originY;
  
                  // Calculate the distance between the center of the CellLayout
                  // and the touch point
                  float dist = squaredDistance(touchXy, cellLayoutCenter);
  
                  if (dist < smallestDistSoFar) {
                      smallestDistSoFar = dist;
                      bestMatchingScreen = cl;
                  }
              }
          }
          return bestMatchingScreen;
      }
  
      // This is used to compute the visual center of the dragView. This point is then
      // used to visualize drop locations and determine where to drop an item. The idea is that
      // the visual center represents the user's interpretation of where the item is, and hence
      // is the appropriate point to use when determining drop location.
      private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset,
              DragView dragView, float[] recycle) {
          float res[];
          if (recycle == null) {
              res = new float[2];
          } else {
              res = recycle;
          }
  
          // First off, the drag view has been shifted in a way that is not represented in the
          // x and y values or the x/yOffsets. Here we account for that shift.
          x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX);
          y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
  
          // These represent the visual top and left of drag view if a dragRect was provided.
          // If a dragRect was not provided, then they correspond to the actual view left and
          // top, as the dragRect is in that case taken to be the entire dragView.
          // R.dimen.dragViewOffsetY.
          int left = x - xOffset;
          int top = y - yOffset;
  
          // In order to find the visual center, we shift by half the dragRect
          res[0] = left + dragView.getDragRegion().width() / 2;
          res[1] = top + dragView.getDragRegion().height() / 2;
  
          return res;
      }
  
      private boolean isDragWidget(DragObject d) {
          return (d.dragInfo instanceof LauncherAppWidgetInfo ||
                  d.dragInfo instanceof PendingAddWidgetInfo);
      }
      private boolean isExternalDragWidget(DragObject d) {
          return d.dragSource != this && isDragWidget(d);
      }
  
      public void onDragOver(DragObject d) {
          // Skip drag over events while we are dragging over side pages
          if (mInScrollArea || !transitionStateShouldAllowDrop()) return;
  
          Rect r = new Rect();
          CellLayout layout = null;
          ItemInfo item = (ItemInfo) d.dragInfo;
          if (item == null) {
              if (LauncherAppState.isDogfoodBuild()) {
                  throw new NullPointerException("DragObject has null info");
              }
              return;
          }
  
          // Ensure that we have proper spans for the item that we are dropping
          if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found");
          mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset,
              d.dragView, mDragViewVisualCenter);
  
          final View child = (mDragInfo == null) ? null : mDragInfo.cell;
          // Identify whether we have dragged over a side page
          if (workspaceInModalState()) {
              if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) {
                  if (isPointInSelfOverHotseat(d.x, d.y, r)) {
                      layout = mLauncher.getHotseat().getLayout();
                  }
              }
              if (layout == null) {
                  layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false);
              }
              if (layout != mDragTargetLayout) {
                  setCurrentDropLayout(layout);
                  setCurrentDragOverlappingLayout(layout);
  
                  boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED);
                  if (isInSpringLoadedMode) {
                      if (mLauncher.isHotseatLayout(layout)) {
                          mSpringLoadedDragController.cancel();
                      } else {
                          mSpringLoadedDragController.setAlarm(mDragTargetLayout);
                      }
                  }
              }
          } else {
              // Test to see if we are over the hotseat otherwise just use the current page
              if (mLauncher.getHotseat() != null && !isDragWidget(d)) {
                  if (isPointInSelfOverHotseat(d.x, d.y, r)) {
                      layout = mLauncher.getHotseat().getLayout();
                  }
              }
              if (layout == null) {
                  layout = getCurrentDropLayout();
              }
              if (layout != mDragTargetLayout) {
                  setCurrentDropLayout(layout);
                  setCurrentDragOverlappingLayout(layout);
              }
          }
  
          // Handle the drag over
          if (mDragTargetLayout != null) {
              // We want the point to be mapped to the dragTarget.
              if (mLauncher.isHotseatLayout(mDragTargetLayout)) {
                  mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
              } else {
                  mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null);
              }
  
              ItemInfo info = (ItemInfo) d.dragInfo;
  
              int minSpanX = item.spanX;
              int minSpanY = item.spanY;
              if (item.minSpanX > 0 && item.minSpanY > 0) {
                  minSpanX = item.minSpanX;
                  minSpanY = item.minSpanY;
              }
  
              mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
                      (int) mDragViewVisualCenter[1], minSpanX, minSpanY,
                      mDragTargetLayout, mTargetCell);
              int reorderX = mTargetCell[0];
              int reorderY = mTargetCell[1];
  
              setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]);
  
              float targetCellDistance = mDragTargetLayout.getDistanceFromCell(
                      mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell);
  
              final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0],
                      mTargetCell[1]);
  
              manageFolderFeedback(info, mDragTargetLayout, mTargetCell,
                      targetCellDistance, dragOverView);
  
              boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int)
                      mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX,
                      item.spanY, child, mTargetCell);
  
              if (!nearestDropOccupied) {
                  mDragTargetLayout.visualizeDropLocation(child, mDragOutline,
                          (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1],
                          mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false,
                          d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion());
              } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER)
                      && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX ||
                      mLastReorderY != reorderY)) {
  
                  int[] resultSpan = new int[2];
                  mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0],
                          (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY,
                          child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT);
  
                  // Otherwise, if we aren't adding to or creating a folder and there's no pending
                  // reorder, then we schedule a reorder
                  ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter,
                          minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child);
                  mReorderAlarm.setOnAlarmListener(listener);
                  mReorderAlarm.setAlarm(REORDER_TIMEOUT);
              }
  
              if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER ||
                      !nearestDropOccupied) {
                  if (mDragTargetLayout != null) {
                      mDragTargetLayout.revertTempState();
                  }
              }
          }
      }
  
      private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout,
              int[] targetCell, float distance, View dragOverView) {
          boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance,
                  false);
  
          if (mDragMode == DRAG_MODE_NONE && userFolderPending &&
                  !mFolderCreationAlarm.alarmPending()) {
              mFolderCreationAlarm.setOnAlarmListener(new
                      FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]));
              mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT);
              return;
          }
  
          boolean willAddToFolder =
                  willAddToExistingUserFolder(info, targetLayout, targetCell, distance);
  
          if (willAddToFolder && mDragMode == DRAG_MODE_NONE) {
              mDragOverFolderIcon = ((FolderIcon) dragOverView);
              mDragOverFolderIcon.onDragEnter(info);
              if (targetLayout != null) {
                  targetLayout.clearDragOutlines();
              }
              setDragMode(DRAG_MODE_ADD_TO_FOLDER);
              return;
          }
  
          if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) {
              setDragMode(DRAG_MODE_NONE);
          }
          if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) {
              setDragMode(DRAG_MODE_NONE);
          }
  
          return;
      }
  
      class FolderCreationAlarmListener implements OnAlarmListener {
          CellLayout layout;
          int cellX;
          int cellY;
  
          public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) {
              this.layout = layout;
              this.cellX = cellX;
              this.cellY = cellY;
          }
  
          public void onAlarm(Alarm alarm) {
              if (mDragFolderRingAnimator != null) {
                  // This shouldn't happen ever, but just in case, make sure we clean up the mess.
                  mDragFolderRingAnimator.animateToNaturalState();
              }
              mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null);
              mDragFolderRingAnimator.setCell(cellX, cellY);
              mDragFolderRingAnimator.setCellLayout(layout);
              mDragFolderRingAnimator.animateToAcceptState();
              layout.showFolderAccept(mDragFolderRingAnimator);
              layout.clearDragOutlines();
              setDragMode(DRAG_MODE_CREATE_FOLDER);
          }
      }
  
      class ReorderAlarmListener implements OnAlarmListener {
          float[] dragViewCenter;
          int minSpanX, minSpanY, spanX, spanY;
          DragView dragView;
          View child;
  
          public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX,
                  int spanY, DragView dragView, View child) {
              this.dragViewCenter = dragViewCenter;
              this.minSpanX = minSpanX;
              this.minSpanY = minSpanY;
              this.spanX = spanX;
              this.spanY = spanY;
              this.child = child;
              this.dragView = dragView;
          }
  
          public void onAlarm(Alarm alarm) {
              int[] resultSpan = new int[2];
              mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
                      (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout,
                      mTargetCell);
              mLastReorderX = mTargetCell[0];
              mLastReorderY = mTargetCell[1];
  
              mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0],
                  (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY,
                  child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER);
  
              if (mTargetCell[0] < 0 || mTargetCell[1] < 0) {
                  mDragTargetLayout.revertTempState();
              } else {
                  setDragMode(DRAG_MODE_REORDER);
              }
  
              boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY;
              mDragTargetLayout.visualizeDropLocation(child, mDragOutline,
                  (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1],
                  mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize,
                  dragView.getDragVisualizeOffset(), dragView.getDragRegion());
          }
      }
  
      @Override
      public void getHitRectRelativeToDragLayer(Rect outRect) {
          // We want the workspace to have the whole area of the display (it will find the correct
          // cell layout to drop to in the existing drag/drop logic.
          mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect);
      }
  
      /**
       * Add the item specified by dragInfo to the given layout.
       * @return true if successful
       */
      public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) {
          if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) {
              onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false);
              return true;
          }
          mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout));
          return false;
      }
  
      private void onDropExternal(int[] touchXY, Object dragInfo,
              CellLayout cellLayout, boolean insertAtFirst) {
          onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null);
      }
  
      /**
       * Drop an item that didn't originate on one of the workspace screens.
       * It may have come from Launcher (e.g. from all apps or customize), or it may have
       * come from another app altogether.
       *
       * NOTE: This can also be called when we are outside of a drag event, when we want
       * to add an item to one of the workspace screens.
       */
      private void onDropExternal(final int[] touchXY, final Object dragInfo,
              final CellLayout cellLayout, boolean insertAtFirst, DragObject d) {
          final Runnable exitSpringLoadedRunnable = new Runnable() {
              @Override
              public void run() {
                  mLauncher.exitSpringLoadedDragModeDelayed(true,
                          Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
              }
          };
  
          ItemInfo info = (ItemInfo) dragInfo;
          int spanX = info.spanX;
          int spanY = info.spanY;
          if (mDragInfo != null) {
              spanX = mDragInfo.spanX;
              spanY = mDragInfo.spanY;
          }
  
          final long container = mLauncher.isHotseatLayout(cellLayout) ?
                  LauncherSettings.Favorites.CONTAINER_HOTSEAT :
                      LauncherSettings.Favorites.CONTAINER_DESKTOP;
          final long screenId = getIdForScreen(cellLayout);
          if (!mLauncher.isHotseatLayout(cellLayout)
                  && screenId != getScreenIdForPageIndex(mCurrentPage)
                  && mState != State.SPRING_LOADED) {
              snapToScreenId(screenId, null);
          }
  
          if (info instanceof PendingAddItemInfo) {
              final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo;
  
              boolean findNearestVacantCell = true;
              if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) {
                  mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY,
                          cellLayout, mTargetCell);
                  float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0],
                          mDragViewVisualCenter[1], mTargetCell);
                  if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell,
                          distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo,
                                  cellLayout, mTargetCell, distance)) {
                      findNearestVacantCell = false;
                  }
              }
  
              final ItemInfo item = (ItemInfo) d.dragInfo;
              boolean updateWidgetSize = false;
              if (findNearestVacantCell) {
                  int minSpanX = item.spanX;
                  int minSpanY = item.spanY;
                  if (item.minSpanX > 0 && item.minSpanY > 0) {
                      minSpanX = item.minSpanX;
                      minSpanY = item.minSpanY;
                  }
                  int[] resultSpan = new int[2];
                  mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0],
                          (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY,
                          null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL);
  
                  if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) {
                      updateWidgetSize = true;
                  }
                  item.spanX = resultSpan[0];
                  item.spanY = resultSpan[1];
              }
  
              Runnable onAnimationCompleteRunnable = new Runnable() {
                  @Override
                  public void run() {
                      // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when
                      // adding an item that may not be dropped right away (due to a config activity)
                      // we defer the removal until the activity returns.
                      deferRemoveExtraEmptyScreen();
  
                      // When dragging and dropping from customization tray, we deal with creating
                      // widgets/shortcuts/folders in a slightly different way
                      switch (pendingInfo.itemType) {
                      case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
                          int span[] = new int[2];
                          span[0] = item.spanX;
                          span[1] = item.spanY;
                          mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo,
                                  container, screenId, mTargetCell, span, null);
                          break;
                      case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
                          mLauncher.processShortcutFromDrop(pendingInfo.componentName,
                                  container, screenId, mTargetCell, null);
                          break;
                      default:
                          throw new IllegalStateException("Unknown item type: " +
                                  pendingInfo.itemType);
                      }
                  }
              };
              View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET
                      ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null;
  
              if (finalView instanceof AppWidgetHostView && updateWidgetSize) {
                  AppWidgetHostView awhv = (AppWidgetHostView) finalView;
                  AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX,
                          item.spanY);
              }
  
              int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR;
              if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET &&
                      ((PendingAddWidgetInfo) pendingInfo).info.configure != null) {
                  animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN;
              }
              animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable,
                      animationStyle, finalView, true);
          } else {
              // This is for other drag/drop cases, like dragging from All Apps
              View view = null;
  
              switch (info.itemType) {
              case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
              case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
                  if (info.container == NO_ID && info instanceof AppInfo) {
                      // Came from all apps -- make a copy
                      info = new ShortcutInfo((AppInfo) info);
                  }
                  view = mLauncher.createShortcut(R.layout.application, cellLayout,
                          (ShortcutInfo) info);
                  break;
              case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
                  view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout,
                          (FolderInfo) info, mIconCache);
                  break;
              default:
                  throw new IllegalStateException("Unknown item type: " + info.itemType);
              }
  
              // First we find the cell nearest to point at which the item is
              // dropped, without any consideration to whether there is an item there.
              if (touchXY != null) {
                  mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY,
                          cellLayout, mTargetCell);
                  float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0],
                          mDragViewVisualCenter[1], mTargetCell);
                  d.postAnimationRunnable = exitSpringLoadedRunnable;
                  if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance,
                          true, d.dragView, d.postAnimationRunnable)) {
                      return;
                  }
                  if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d,
                          true)) {
                      return;
                  }
              }
  
              if (touchXY != null) {
                  // when dragging and dropping, just find the closest free spot
                  mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0],
                          (int) mDragViewVisualCenter[1], 1, 1, 1, 1,
                          null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL);
              } else {
                  cellLayout.findCellForSpan(mTargetCell, 1, 1);
              }
              // Add the item to DB before adding to screen ensures that the container and other
              // values of the info is properly updated.
              LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId,
                      mTargetCell[0], mTargetCell[1]);
  
              addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX,
                      info.spanY, insertAtFirst);
              cellLayout.onDropChild(view);
              cellLayout.getShortcutsAndWidgets().measureChild(view);
  
              if (d.dragView != null) {
                  // We wrap the animation call in the temporary set and reset of the current
                  // cellLayout to its final transform -- this means we animate the drag view to
                  // the correct final location.
                  setFinalTransitionTransform(cellLayout);
                  mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view,
                          exitSpringLoadedRunnable, this);
                  resetTransitionTransform(cellLayout);
              }
          }
      }
  
      public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) {
          int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX,
                  widgetInfo.spanY, widgetInfo, false);
          int visibility = layout.getVisibility();
          layout.setVisibility(VISIBLE);
  
          int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY);
          int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY);
          Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1],
                  Bitmap.Config.ARGB_8888);
          mCanvas.setBitmap(b);
  
          layout.measure(width, height);
          layout.layout(0, 0, unScaledSize[0], unScaledSize[1]);
          layout.draw(mCanvas);
          mCanvas.setBitmap(null);
          layout.setVisibility(visibility);
          return b;
      }
  
      private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY,
              DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell,
              boolean external, boolean scale) {
          // Now we animate the dragView, (ie. the widget or shortcut preview) into its final
          // location and size on the home screen.
          int spanX = info.spanX;
          int spanY = info.spanY;
  
          Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY);
          loc[0] = r.left;
          loc[1] = r.top;
  
          setFinalTransitionTransform(layout);
          float cellLayoutScale =
                  mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true);
          resetTransitionTransform(layout);
  
          float dragViewScaleX;
          float dragViewScaleY;
          if (scale) {
              dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth();
              dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight();
          } else {
              dragViewScaleX = 1f;
              dragViewScaleY = 1f;
          }
  
          // The animation will scale the dragView about its center, so we need to center about
          // the final location.
          loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2;
          loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2;
  
          scaleXY[0] = dragViewScaleX * cellLayoutScale;
          scaleXY[1] = dragViewScaleY * cellLayoutScale;
      }
  
      public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView,
              final Runnable onCompleteRunnable, int animationType, final View finalView,
              boolean external) {
          Rect from = new Rect();
          mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from);
  
          int[] finalPos = new int[2];
          float scaleXY[] = new float[2];
          boolean scalePreview = !(info instanceof PendingAddShortcutInfo);
          getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell,
                  external, scalePreview);
  
          Resources res = mLauncher.getResources();
          final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200;
  
          // In the case where we've prebound the widget, we remove it from the DragLayer
          if (finalView instanceof AppWidgetHostView && external) {
              Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView");
              mLauncher.getDragLayer().removeView(finalView);
          }
          if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) {
              Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView);
              dragView.setCrossFadeBitmap(crossFadeBitmap);
              dragView.crossFade((int) (duration * 0.8f));
          } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) {
              scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0],  scaleXY[1]);
          }
  
          DragLayer dragLayer = mLauncher.getDragLayer();
          if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) {
              mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f,
                      DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration);
          } else {
              int endStyle;
              if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) {
                  endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE;
              } else {
                  endStyle = DragLayer.ANIMATION_END_DISAPPEAR;;
              }
  
              Runnable onComplete = new Runnable() {
                  @Override
                  public void run() {
                      if (finalView != null) {
                          finalView.setVisibility(VISIBLE);
                      }
                      if (onCompleteRunnable != null) {
                          onCompleteRunnable.run();
                      }
                  }
              };
              dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0],
                      finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle,
                      duration, this);
          }
      }
  
      public void setFinalTransitionTransform(CellLayout layout) {
          if (isSwitchingState()) {
              mCurrentScale = getScaleX();
              setScaleX(mNewScale);
              setScaleY(mNewScale);
          }
      }
      public void resetTransitionTransform(CellLayout layout) {
          if (isSwitchingState()) {
              setScaleX(mCurrentScale);
              setScaleY(mCurrentScale);
          }
      }
  
      /**
       * Return the current {@link CellLayout}, correctly picking the destination
       * screen while a scroll is in progress.
       */
      public CellLayout getCurrentDropLayout() {
          return (CellLayout) getChildAt(getNextPage());
      }
  
      /**
       * Return the current CellInfo describing our current drag; this method exists
       * so that Launcher can sync this object with the correct info when the activity is created/
       * destroyed
       *
       */
      public CellLayout.CellInfo getDragInfo() {
          return mDragInfo;
      }
  
      public int getCurrentPageOffsetFromCustomContent() {
          return getNextPage() - numCustomPages();
      }
  
      /**
       * Calculate the nearest cell where the given object would be dropped.
       *
       * pixelX and pixelY should be in the coordinate system of layout
       */
      private int[] findNearestArea(int pixelX, int pixelY,
              int spanX, int spanY, CellLayout layout, int[] recycle) {
          return layout.findNearestArea(
                  pixelX, pixelY, spanX, spanY, recycle);
      }
  
      void setup(DragController dragController) {
          mSpringLoadedDragController = new SpringLoadedDragController(mLauncher);
          mDragController = dragController;
  
          // hardware layers on children are enabled on startup, but should be disabled until
          // needed
          updateChildrenLayersEnabled(false);
      }
  
      /**
       * Called at the end of a drag which originated on the workspace.
       */
      public void onDropCompleted(final View target, final DragObject d,
              final boolean isFlingToDelete, final boolean success) {
          if (mDeferDropAfterUninstall) {
              mDeferredAction = new Runnable() {
                  public void run() {
                      onDropCompleted(target, d, isFlingToDelete, success);
                      mDeferredAction = null;
                  }
              };
              return;
          }
  
          boolean beingCalledAfterUninstall = mDeferredAction != null;
  
          if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) {
              if (target != this && mDragInfo != null) {
                  CellLayout parentCell = getParentCellLayoutForView(mDragInfo.cell);
                  if (parentCell != null) {
                      parentCell.removeView(mDragInfo.cell);
                  } else if (LauncherAppState.isDogfoodBuild()) {
                      throw new NullPointerException("mDragInfo.cell has null parent");
                  }
                  if (mDragInfo.cell instanceof DropTarget) {
                      mDragController.removeDropTarget((DropTarget) mDragInfo.cell);
                  }
              }
          } else if (mDragInfo != null) {
              CellLayout cellLayout;
              if (mLauncher.isHotseatLayout(target)) {
                  cellLayout = mLauncher.getHotseat().getLayout();
              } else {
                  cellLayout = getScreenWithId(mDragInfo.screenId);
              }
              if (cellLayout == null && LauncherAppState.isDogfoodBuild()) {
                  throw new RuntimeException("Invalid state: cellLayout == null in "
                          + "Workspace#onDropCompleted. Please file a bug. ");
              }
              if (cellLayout != null) {
                  cellLayout.onDropChild(mDragInfo.cell);
              }
          }
          if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful))
                  && mDragInfo.cell != null) {
              mDragInfo.cell.setVisibility(VISIBLE);
          }
          mDragOutline = null;
          mDragInfo = null;
      }
  
      public void deferCompleteDropAfterUninstallActivity() {
          mDeferDropAfterUninstall = true;
      }
  
      /// maybe move this into a smaller part
      public void onUninstallActivityReturned(boolean success) {
          mDeferDropAfterUninstall = false;
          mUninstallSuccessful = success;
          if (mDeferredAction != null) {
              mDeferredAction.run();
          }
      }
  
      void updateItemLocationsInDatabase(CellLayout cl) {
          int count = cl.getShortcutsAndWidgets().getChildCount();
  
          long screenId = getIdForScreen(cl);
          int container = Favorites.CONTAINER_DESKTOP;
  
          if (mLauncher.isHotseatLayout(cl)) {
              screenId = -1;
              container = Favorites.CONTAINER_HOTSEAT;
          }
  
          for (int i = 0; i < count; i++) {
              View v = cl.getShortcutsAndWidgets().getChildAt(i);
              ItemInfo info = (ItemInfo) v.getTag();
              // Null check required as the AllApps button doesn't have an item info
              if (info != null && info.requiresDbUpdate) {
                  info.requiresDbUpdate = false;
                  LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX,
                          info.cellY, info.spanX, info.spanY);
              }
          }
      }
  
      ArrayList<ComponentName> getUniqueComponents(boolean stripDuplicates, ArrayList<ComponentName> duplicates) {
          ArrayList<ComponentName> uniqueIntents = new ArrayList<ComponentName>();
          getUniqueIntents((CellLayout) mLauncher.getHotseat().getLayout(), uniqueIntents, duplicates, false);
          int count = getChildCount();
          for (int i = 0; i < count; i++) {
              CellLayout cl = (CellLayout) getChildAt(i);
              getUniqueIntents(cl, uniqueIntents, duplicates, false);
          }
          return uniqueIntents;
      }
  
      void getUniqueIntents(CellLayout cl, ArrayList<ComponentName> uniqueIntents,
              ArrayList<ComponentName> duplicates, boolean stripDuplicates) {
          int count = cl.getShortcutsAndWidgets().getChildCount();
  
          ArrayList<View> children = new ArrayList<View>();
          for (int i = 0; i < count; i++) {
              View v = cl.getShortcutsAndWidgets().getChildAt(i);
              children.add(v);
          }
  
          for (int i = 0; i < count; i++) {
              View v = children.get(i);
              ItemInfo info = (ItemInfo) v.getTag();
              // Null check required as the AllApps button doesn't have an item info
              if (info instanceof ShortcutInfo) {
                  ShortcutInfo si = (ShortcutInfo) info;
                  ComponentName cn = si.intent.getComponent();
  
                  Uri dataUri = si.intent.getData();
                  // If dataUri is not null / empty or if this component isn't one that would
                  // have previously showed up in the AllApps list, then this is a widget-type
                  // shortcut, so ignore it.
                  if (dataUri != null && !dataUri.equals(Uri.EMPTY)) {
                      continue;
                  }
  
                  if (!uniqueIntents.contains(cn)) {
                      uniqueIntents.add(cn);
                  } else {
                      if (stripDuplicates) {
                          cl.removeViewInLayout(v);
                          LauncherModel.deleteItemFromDatabase(mLauncher, si);
                      }
                      if (duplicates != null) {
                          duplicates.add(cn);
                      }
                  }
              }
              if (v instanceof FolderIcon) {
                  FolderIcon fi = (FolderIcon) v;
                  ArrayList<View> items = fi.getFolder().getItemsInReadingOrder();
                  for (int j = 0; j < items.size(); j++) {
                      if (items.get(j).getTag() instanceof ShortcutInfo) {
                          ShortcutInfo si = (ShortcutInfo) items.get(j).getTag();
                          ComponentName cn = si.intent.getComponent();
  
                          Uri dataUri = si.intent.getData();
                          // If dataUri is not null / empty or if this component isn't one that would
                          // have previously showed up in the AllApps list, then this is a widget-type
                          // shortcut, so ignore it.
                          if (dataUri != null && !dataUri.equals(Uri.EMPTY)) {
                              continue;
                          }
  
                          if (!uniqueIntents.contains(cn)) {
                              uniqueIntents.add(cn);
                          }  else {
                              if (stripDuplicates) {
                                  fi.getFolderInfo().remove(si);
                                  LauncherModel.deleteItemFromDatabase(mLauncher, si);
                              }
                              if (duplicates != null) {
                                  duplicates.add(cn);
                              }
                          }
                      }
                  }
              }
          }
      }
  
      void saveWorkspaceToDb() {
          saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout());
          int count = getChildCount();
          for (int i = 0; i < count; i++) {
              CellLayout cl = (CellLayout) getChildAt(i);
              saveWorkspaceScreenToDb(cl);
          }
      }
  
      void saveWorkspaceScreenToDb(CellLayout cl) {
          int count = cl.getShortcutsAndWidgets().getChildCount();
  
          long screenId = getIdForScreen(cl);
          int container = Favorites.CONTAINER_DESKTOP;
  
          Hotseat hotseat = mLauncher.getHotseat();
          if (mLauncher.isHotseatLayout(cl)) {
              screenId = -1;
              container = Favorites.CONTAINER_HOTSEAT;
          }
  
          for (int i = 0; i < count; i++) {
              View v = cl.getShortcutsAndWidgets().getChildAt(i);
              ItemInfo info = (ItemInfo) v.getTag();
              // Null check required as the AllApps button doesn't have an item info
              if (info != null) {
                  int cellX = info.cellX;
                  int cellY = info.cellY;
                  if (container == Favorites.CONTAINER_HOTSEAT) {
                      cellX = hotseat.getCellXFromOrder((int) info.screenId);
                      cellY = hotseat.getCellYFromOrder((int) info.screenId);
                  }
                  LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX,
                          cellY, false);
              }
              if (v instanceof FolderIcon) {
                  FolderIcon fi = (FolderIcon) v;
                  fi.getFolder().addItemLocationsInDatabase();
              }
          }
      }
  
      @Override
      public float getIntrinsicIconScaleFactor() {
          return 1f;
      }
  
      @Override
      public boolean supportsFlingToDelete() {
          return true;
      }
  
      @Override
      public boolean supportsAppInfoDropTarget() {
          return false;
      }
  
      @Override
      public boolean supportsDeleteDropTarget() {
          return true;
      }
  
      @Override
      public void onFlingToDelete(DragObject d, int x, int y, PointF vec) {
          // Do nothing
      }
  
      @Override
      public void onFlingToDeleteCompleted() {
          // Do nothing
      }
  
      public boolean isDropEnabled() {
          return true;
      }
  
      @Override
      protected void onRestoreInstanceState(Parcelable state) {
          super.onRestoreInstanceState(state);
          Launcher.setScreen(mCurrentPage);
      }
  
      @Override
      protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) {
          // We don't dispatch restoreInstanceState to our children using this code path.
          // Some pages will be restored immediately as their items are bound immediately, and
          // others we will need to wait until after their items are bound.
          mSavedStates = container;
      }
  
      public void restoreInstanceStateForChild(int child) {
          if (mSavedStates != null) {
              mRestoredPages.add(child);
              CellLayout cl = (CellLayout) getChildAt(child);
              if (cl != null) {
                  cl.restoreInstanceState(mSavedStates);
              }
          }
      }
  
      public void restoreInstanceStateForRemainingPages() {
          int count = getChildCount();
          for (int i = 0; i < count; i++) {
              if (!mRestoredPages.contains(i)) {
                  restoreInstanceStateForChild(i);
              }
          }
          mRestoredPages.clear();
          mSavedStates = null;
      }
  
      @Override
      public void scrollLeft() {
          if (!workspaceInModalState() && !mIsSwitchingState) {
              super.scrollLeft();
          }
          Folder openFolder = getOpenFolder();
          if (openFolder != null) {
              openFolder.completeDragExit();
          }
      }
  
      @Override
      public void scrollRight() {
          if (!workspaceInModalState() && !mIsSwitchingState) {
              super.scrollRight();
          }
          Folder openFolder = getOpenFolder();
          if (openFolder != null) {
              openFolder.completeDragExit();
          }
      }
  
      @Override
      public boolean onEnterScrollArea(int x, int y, int direction) {
          // Ignore the scroll area if we are dragging over the hot seat
          boolean isPortrait = !LauncherAppState.isScreenLandscape(getContext());
          if (mLauncher.getHotseat() != null && isPortrait) {
              Rect r = new Rect();
              mLauncher.getHotseat().getHitRect(r);
              if (r.contains(x, y)) {
                  return false;
              }
          }
  
          boolean result = false;
          if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) {
              mInScrollArea = true;
  
              final int page = getNextPage() +
                         (direction == DragController.SCROLL_LEFT ? -1 : 1);
              // We always want to exit the current layout to ensure parity of enter / exit
              setCurrentDropLayout(null);
  
              if (0 <= page && page < getChildCount()) {
                  // Ensure that we are not dragging over to the custom content screen
                  if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) {
                      return false;
                  }
  
                  CellLayout layout = (CellLayout) getChildAt(page);
                  setCurrentDragOverlappingLayout(layout);
  
                  // Workspace is responsible for drawing the edge glow on adjacent pages,
                  // so we need to redraw the workspace when this may have changed.
                  invalidate();
                  result = true;
              }
          }
          return result;
      }
  
      @Override
      public boolean onExitScrollArea() {
          boolean result = false;
          if (mInScrollArea) {
              invalidate();
              CellLayout layout = getCurrentDropLayout();
              setCurrentDropLayout(layout);
              setCurrentDragOverlappingLayout(layout);
  
              result = true;
              mInScrollArea = false;
          }
          return result;
      }
  
      private void onResetScrollArea() {
          setCurrentDragOverlappingLayout(null);
          mInScrollArea = false;
      }
  
      /**
       * Returns a specific CellLayout
       */
      CellLayout getParentCellLayoutForView(View v) {
          ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts();
          for (CellLayout layout : layouts) {
              if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) {
                  return layout;
              }
          }
          return null;
      }
  
      /**
       * Returns a list of all the CellLayouts in the workspace.
       */
      ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() {
          ArrayList<CellLayout> layouts = new ArrayList<CellLayout>();
          int screenCount = getChildCount();
          for (int screen = 0; screen < screenCount; screen++) {
              layouts.add(((CellLayout) getChildAt(screen)));
          }
          if (mLauncher.getHotseat() != null) {
              layouts.add(mLauncher.getHotseat().getLayout());
          }
          return layouts;
      }
  
      /**
       * We should only use this to search for specific children.  Do not use this method to modify
       * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from
       * the hotseat and workspace pages
       */
      ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() {
          ArrayList<ShortcutAndWidgetContainer> childrenLayouts =
                  new ArrayList<ShortcutAndWidgetContainer>();
          int screenCount = getChildCount();
          for (int screen = 0; screen < screenCount; screen++) {
              childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets());
          }
          if (mLauncher.getHotseat() != null) {
              childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets());
          }
          return childrenLayouts;
      }
  
      public Folder getFolderForTag(final Object tag) {
          return (Folder) getFirstMatch(new ItemOperator() {
  
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  return (v instanceof Folder) && (((Folder) v).getInfo() == tag)
                          && ((Folder) v).getInfo().opened;
              }
          });
      }
  
      public View getViewForTag(final Object tag) {
          return getFirstMatch(new ItemOperator() {
  
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  return info == tag;
              }
          });
      }
  
      public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) {
          return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() {
  
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  return (info instanceof LauncherAppWidgetInfo) &&
                          ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId;
              }
          });
      }
  
      private View getFirstMatch(final ItemOperator operator) {
          final View[] value = new View[1];
          mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  if (operator.evaluate(info, v, parent)) {
                      value[0] = v;
                      return true;
                  }
                  return false;
              }
          });
          return value[0];
      }
  
      void clearDropTargets() {
          mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  if (v instanceof DropTarget) {
                      mDragController.removeDropTarget((DropTarget) v);
                  }
                  // not done, process all the shortcuts
                  return false;
              }
          });
      }
  
      public void disableShortcutsByPackageName(final ArrayList<String> packages,
              final UserHandleCompat user, final int reason) {
          final HashSet<String> packageNames = new HashSet<String>();
          packageNames.addAll(packages);
  
          mapOverItems(MAP_RECURSE, new ItemOperator() {
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  if (info instanceof ShortcutInfo && v instanceof BubbleTextView) {
                      ShortcutInfo shortcutInfo = (ShortcutInfo) info;
                      ComponentName cn = shortcutInfo.getTargetComponent();
                      if (user.equals(shortcutInfo.user) && cn != null
                              && packageNames.contains(cn.getPackageName())) {
                          shortcutInfo.isDisabled |= reason;
                          BubbleTextView shortcut = (BubbleTextView) v;
                          shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache, true, false);
  
                          if (parent != null) {
                              parent.invalidate();
                          }
                      }
                  }
                  // process all the shortcuts
                  return false;
              }
          });
      }
  
      // Removes ALL items that match a given package name, this is usually called when a package
      // has been removed and we want to remove all components (widgets, shortcuts, apps) that
      // belong to that package.
      void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) {
          final HashSet<String> packageNames = new HashSet<String>();
          packageNames.addAll(packages);
  
          // Filter out all the ItemInfos that this is going to affect
          final HashSet<ItemInfo> infos = new HashSet<ItemInfo>();
          final HashSet<ComponentName> cns = new HashSet<ComponentName>();
          ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts();
          for (CellLayout layoutParent : cellLayouts) {
              ViewGroup layout = layoutParent.getShortcutsAndWidgets();
              int childCount = layout.getChildCount();
              for (int i = 0; i < childCount; ++i) {
                  View view = layout.getChildAt(i);
                  infos.add((ItemInfo) view.getTag());
              }
          }
          LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() {
              @Override
              public boolean filterItem(ItemInfo parent, ItemInfo info,
                                        ComponentName cn) {
                  if (packageNames.contains(cn.getPackageName())
                          && info.user.equals(user)) {
                      cns.add(cn);
                      return true;
                  }
                  return false;
              }
          };
          LauncherModel.filterItemInfos(infos, filter);
  
          // Remove the affected components
          removeItemsByComponentName(cns, user);
      }
  
      /**
       * Removes items that match the item info specified. When applications are removed
       * as a part of an update, this is called to ensure that other widgets and application
       * shortcuts are not removed.
       */
      void removeItemsByComponentName(final HashSet<ComponentName> componentNames,
              final UserHandleCompat user) {
          ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts();
          for (final CellLayout layoutParent: cellLayouts) {
              final ViewGroup layout = layoutParent.getShortcutsAndWidgets();
  
              final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>();
              for (int j = 0; j < layout.getChildCount(); j++) {
                  final View view = layout.getChildAt(j);
                  children.put((ItemInfo) view.getTag(), view);
              }
  
              final ArrayList<View> childrenToRemove = new ArrayList<View>();
              final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove =
                      new HashMap<FolderInfo, ArrayList<ShortcutInfo>>();
              LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() {
                  @Override
                  public boolean filterItem(ItemInfo parent, ItemInfo info,
                                            ComponentName cn) {
                      if (parent instanceof FolderInfo) {
                          if (componentNames.contains(cn) && info.user.equals(user)) {
                              FolderInfo folder = (FolderInfo) parent;
                              ArrayList<ShortcutInfo> appsToRemove;
                              if (folderAppsToRemove.containsKey(folder)) {
                                  appsToRemove = folderAppsToRemove.get(folder);
                              } else {
                                  appsToRemove = new ArrayList<ShortcutInfo>();
                                  folderAppsToRemove.put(folder, appsToRemove);
                              }
                              appsToRemove.add((ShortcutInfo) info);
                              return true;
                          }
                      } else {
                          if (componentNames.contains(cn) && info.user.equals(user)) {
                              childrenToRemove.add(children.get(info));
                              return true;
                          }
                      }
                      return false;
                  }
              };
              LauncherModel.filterItemInfos(children.keySet(), filter);
  
              // Remove all the apps from their folders
              for (FolderInfo folder : folderAppsToRemove.keySet()) {
                  ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder);
                  for (ShortcutInfo info : appsToRemove) {
                      folder.remove(info);
                  }
              }
  
              // Remove all the other children
              for (View child : childrenToRemove) {
                  // Note: We can not remove the view directly from CellLayoutChildren as this
                  // does not re-mark the spaces as unoccupied.
                  layoutParent.removeViewInLayout(child);
                  if (child instanceof DropTarget) {
                      mDragController.removeDropTarget((DropTarget) child);
                  }
              }
  
              if (childrenToRemove.size() > 0) {
                  layout.requestLayout();
                  layout.invalidate();
              }
          }
  
          // Strip all the empty screens
          stripEmptyScreens();
      }
  
      interface ItemOperator {
          /**
           * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}.
           *
           * @param info info for the shortcut
           * @param view view for the shortcut
           * @param parent containing folder, or null
           * @return true if done, false to continue the map
           */
          public boolean evaluate(ItemInfo info, View view, View parent);
      }
  
      /**
       * Map the operator over the shortcuts and widgets, return the first-non-null value.
       *
       * @param recurse true: iterate over folder children. false: op get the folders themselves.
       * @param op the operator to map over the shortcuts
       */
      void mapOverItems(boolean recurse, ItemOperator op) {
          ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers();
          final int containerCount = containers.size();
          for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) {
              ShortcutAndWidgetContainer container = containers.get(containerIdx);
              // map over all the shortcuts on the workspace
              final int itemCount = container.getChildCount();
              for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) {
                  View item = container.getChildAt(itemIdx);
                  ItemInfo info = (ItemInfo) item.getTag();
                  if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) {
                      FolderIcon folder = (FolderIcon) item;
                      ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder();
                      // map over all the children in the folder
                      final int childCount = folderChildren.size();
                      for (int childIdx = 0; childIdx < childCount; childIdx++) {
                          View child = folderChildren.get(childIdx);
                          info = (ItemInfo) child.getTag();
                          if (op.evaluate(info, child, folder)) {
                              return;
                          }
                      }
                  } else {
                      if (op.evaluate(info, item, null)) {
                          return;
                      }
                  }
              }
          }
      }
  
      void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) {
          final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts);
          mapOverItems(MAP_RECURSE, new ItemOperator() {
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  if (info instanceof ShortcutInfo && v instanceof BubbleTextView &&
                          updates.contains(info)) {
                      ShortcutInfo si = (ShortcutInfo) info;
                      BubbleTextView shortcut = (BubbleTextView) v;
                      boolean oldPromiseState = shortcut.getCompoundDrawables()[1]
                              instanceof PreloadIconDrawable;
                      shortcut.applyFromShortcutInfo(si, mIconCache, true,
                              si.isPromise() != oldPromiseState);
  
                      if (parent != null) {
                          parent.invalidate();
                      }
                  }
                  // process all the shortcuts
                  return false;
              }
          });
      }
  
      public void removeAbandonedPromise(String packageName, UserHandleCompat user) {
          ArrayList<String> packages = new ArrayList<String>(1);
          packages.add(packageName);
          LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user);
          removeItemsByPackageName(packages, user);
      }
  
      public void updatePackageBadge(final String packageName, final UserHandleCompat user) {
          mapOverItems(MAP_RECURSE, new ItemOperator() {
              @Override
              public boolean evaluate(ItemInfo info, View v, View parent) {
                  if (info instanceof ShortcutInfo && v instanceof BubbleTextView) {
                      ShortcutInfo shortcutInfo = (ShortcutInfo) info;
                      ComponentName cn = shortcutInfo.getTargetComponent();
                      if (user.equals(shortcutInfo.user) && cn != null
                              && shortcutInfo.isPromise()
                              && packageName.equals(cn.getPackageName())) {
                          if (shortcutInfo.hasStatusFlag(ShortcutInfo.FLAG_AUTOINTALL_ICON)) {
                              // For auto install apps update the icon as well as label.
                              mIconCache.getTitleAndIcon(shortcutInfo,
                                      shortcutInfo.promisedIntent, user, true);
                          } else {
                              // Only update the icon for restored apps.
                              shortcutInfo.updateIcon(mIconCache);
                          }
                          BubbleTextView shortcut = (BubbleTextView) v;
                          shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache, true, false);
  
                          if (parent != null) {
                              parent.invalidate();
                          }
                      }
                  }
                  // process all the shortcuts
                  return false;
              }
          });
      }
  
      public void updatePackageState(ArrayList<PackageInstallInfo> installInfos) {
          for (final PackageInstallInfo installInfo : installInfos) {
              if (installInfo.state == PackageInstallerCompat.STATUS_INSTALLED) {
                  continue;
              }
  
              mapOverItems(MAP_RECURSE, new ItemOperator() {
                  @Override
                  public boolean evaluate(ItemInfo info, View v, View parent) {
                      if (info instanceof ShortcutInfo && v instanceof BubbleTextView) {
                          ShortcutInfo si = (ShortcutInfo) info;
                          ComponentName cn = si.getTargetComponent();
                          if (si.isPromise() && (cn != null)
                                  && installInfo.packageName.equals(cn.getPackageName())) {
                              si.setInstallProgress(installInfo.progress);
                              if (installInfo.state == PackageInstallerCompat.STATUS_FAILED) {
                                  // Mark this info as broken.
                                  si.status &= ~ShortcutInfo.FLAG_INSTALL_SESSION_ACTIVE;
                              }
                              ((BubbleTextView)v).applyState(false);
                          }
                      } else if (v instanceof PendingAppWidgetHostView
                              && info instanceof LauncherAppWidgetInfo
                              && ((LauncherAppWidgetInfo) info).providerName.getPackageName()
                                  .equals(installInfo.packageName)) {
                          ((LauncherAppWidgetInfo) info).installProgress = installInfo.progress;
                          ((PendingAppWidgetHostView) v).applyState();
                      }
  
                      // process all the shortcuts
                      return false;
                  }
              });
          }
      }
  
      void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) {
          if (!changedInfo.isEmpty()) {
              DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo,
                      mLauncher.getAppWidgetHost());
              if (LauncherModel.findAppWidgetProviderInfoWithComponent(getContext(),
                      changedInfo.get(0).providerName) != null) {
                  // Re-inflate the widgets which have changed status
                  widgetRefresh.run();
              } else {
                  // widgetRefresh will automatically run when the packages are updated.
                  // For now just update the progress bars
                  for (LauncherAppWidgetInfo info : changedInfo) {
                      if (info.hostView instanceof PendingAppWidgetHostView) {
                          info.installProgress = 100;
                          ((PendingAppWidgetHostView) info.hostView).applyState();
                      }
                  }
              }
          }
      }
  
      private void moveToScreen(int page, boolean animate) {
          if (!workspaceInModalState()) {
              if (animate) {
                  snapToPage(page);
              } else {
                  setCurrentPage(page);
              }
          }
          View child = getChildAt(page);
          if (child != null) {
              child.requestFocus();
          }
      }
  
      void moveToDefaultScreen(boolean animate) {
          moveToScreen(mDefaultPage, animate);
      }
  
      void moveToCustomContentScreen(boolean animate) {
          if (hasCustomContent()) {
              int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID);
              if (animate) {
                  snapToPage(ccIndex);
              } else {
                  setCurrentPage(ccIndex);
              }
              View child = getChildAt(ccIndex);
              if (child != null) {
                  child.requestFocus();
              }
           }
          exitWidgetResizeMode();
      }
  
      @Override
      protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) {
          long screenId = getScreenIdForPageIndex(pageIndex);
          if (screenId == EXTRA_EMPTY_SCREEN_ID) {
              int count = mScreenOrder.size() - numCustomPages();
              if (count > 1) {
                  return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current,
                          R.drawable.ic_pageindicator_add);
              }
          }
  
          return super.getPageIndicatorMarker(pageIndex);
      }
  
      @Override
      public void syncPages() {
      }
  
      @Override
      public void syncPageItems(int page, boolean immediate) {
      }
  
      protected String getPageIndicatorDescription() {
          String settings = getResources().getString(R.string.settings_button_text);
          return getCurrentPageDescription() + ", " + settings;
      }
  
      protected String getCurrentPageDescription() {
          int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage;
          int delta = numCustomPages();
          if (hasCustomContent() && getNextPage() == 0) {
              return mCustomContentDescription;
          }
          return String.format(getContext().getString(R.string.workspace_scroll_format),
                  page + 1 - delta, getChildCount() - delta);
      }
  
      public void getLocationInDragLayer(int[] loc) {
          mLauncher.getDragLayer().getLocationInDragLayer(this, loc);
      }
  
      /**
       * Used as a workaround to ensure that the AppWidgetService receives the
       * PACKAGE_ADDED broadcast before updating widgets.
       */
      private class DeferredWidgetRefresh implements Runnable {
          private final ArrayList<LauncherAppWidgetInfo> mInfos;
          private final LauncherAppWidgetHost mHost;
          private final Handler mHandler;
  
          private boolean mRefreshPending;
  
          public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos,
                  LauncherAppWidgetHost host) {
              mInfos = infos;
              mHost = host;
              mHandler = new Handler();
              mRefreshPending = true;
  
              mHost.addProviderChangeListener(this);
              // Force refresh after 10 seconds, if we don't get the provider changed event.
              // This could happen when the provider is no longer available in the app.
              mHandler.postDelayed(this, 10000);
          }
  
          @Override
          public void run() {
              mHost.removeProviderChangeListener(this);
              mHandler.removeCallbacks(this);
  
              if (!mRefreshPending) {
                  return;
              }
  
              mRefreshPending = false;
  
              for (LauncherAppWidgetInfo info : mInfos) {
                  if (info.hostView instanceof PendingAppWidgetHostView) {
                      PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView;
                      mLauncher.removeAppWidget(info);
  
                      CellLayout cl = (CellLayout) view.getParent().getParent();
                      // Remove the current widget
                      cl.removeView(view);
                      mLauncher.bindAppWidget(info);
                  }
              }
          }
      }
  }
  