com.zyk.launcher.AsyncTaskCallback.java Source code

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Here is the source code for com.zyk.launcher.AsyncTaskCallback.java

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/*
 * Copyright (C) 2011 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.zyk.launcher;

import android.animation.AnimatorSet;
import android.animation.ValueAnimator;
import android.appwidget.AppWidgetHostView;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ComponentName;
import android.content.ContentValues;
import android.content.Context;
import android.content.pm.ApplicationInfo;
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.Color;
import android.graphics.Matrix;
import android.graphics.Point;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Process;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AccelerateInterpolator;
import android.widget.GridLayout;
import android.widget.ImageView;
import android.widget.Toast;

import com.zyk.launcher.alarm.OnAlarmListener;
import com.zyk.launcher.compat.AppWidgetManagerCompat;
import com.zyk.launcher.util.DragUtils;
import com.zyk.launcher.util.Utils;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * A simple callback interface which also provides the results of the task.
 */
interface AsyncTaskCallback {
    void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data);
}

/**
 * The data needed to perform either of the custom AsyncTasks.
 */
class AsyncTaskPageData {
    enum Type {
        LoadWidgetPreviewData
    }

    AsyncTaskPageData(int p, ArrayList<Object> l, int cw, int ch, AsyncTaskCallback bgR, AsyncTaskCallback postR,
            WidgetPreviewLoader w) {
        page = p;
        items = l;
        generatedImages = new ArrayList<Bitmap>();
        maxImageWidth = cw;
        maxImageHeight = ch;
        doInBackgroundCallback = bgR;
        postExecuteCallback = postR;
        widgetPreviewLoader = w;
    }

    void cleanup(boolean cancelled) {
        // Clean up any references to source/generated bitmaps
        if (generatedImages != null) {
            if (cancelled) {
                for (int i = 0; i < generatedImages.size(); i++) {
                    widgetPreviewLoader.recycleBitmap(items.get(i), generatedImages.get(i));
                }
            }
            generatedImages.clear();
        }
    }

    int page;
    ArrayList<Object> items;
    ArrayList<Bitmap> sourceImages;
    ArrayList<Bitmap> generatedImages;
    int maxImageWidth;
    int maxImageHeight;
    AsyncTaskCallback doInBackgroundCallback;
    AsyncTaskCallback postExecuteCallback;
    WidgetPreviewLoader widgetPreviewLoader;
}

/**
 * A generic template for an async task used in AppsCustomize.
 */
class AppsCustomizeAsyncTask extends AsyncTask<AsyncTaskPageData, Void, AsyncTaskPageData> {
    AppsCustomizeAsyncTask(int p, AsyncTaskPageData.Type ty) {
        page = p;
        threadPriority = Process.THREAD_PRIORITY_DEFAULT;
        dataType = ty;
    }

    @Override
    protected AsyncTaskPageData doInBackground(AsyncTaskPageData... params) {
        if (params.length != 1)
            return null;
        // Load each of the widget previews in the background
        params[0].doInBackgroundCallback.run(this, params[0]);
        return params[0];
    }

    @Override
    protected void onPostExecute(AsyncTaskPageData result) {
        // All the widget previews are loaded, so we can just callback to inflate the page
        result.postExecuteCallback.run(this, result);
    }

    void setThreadPriority(int p) {
        threadPriority = p;
    }

    void syncThreadPriority() {
        Process.setThreadPriority(threadPriority);
    }

    // The page that this async task is associated with
    AsyncTaskPageData.Type dataType;
    int page;
    int threadPriority;
}

/**
 * The Apps/Customize page that displays all the applications, widgets, and shortcuts.
 * FIXME 
 * ? ?? ?? ???? workspace?
 */
public class AppsCustomizePagedView extends PagedViewWithDraggableItems
        implements View.OnClickListener, View.OnKeyListener, DragSource, DropTarget, DragScroller,
        PagedViewWidget.ShortPressListener, LauncherTransitionable, DragController.DragListener {
    static final String TAG = "AppsCustomizePagedView";

    private static Rect sTmpRect = new Rect();

    /**
     * The different content types that this paged view can show.
     * showAllAppsapp ?
     * applicating  app
     * Widgets ?
     */
    public enum ContentType {
        Applications, Widgets
    }

    private ContentType mContentType = ContentType.Applications;

    // Refs
    //    private Launcher mLauncher;
    private DragController mDragController;
    private final LayoutInflater mLayoutInflater;
    private final PackageManager mPackageManager;

    // Save and Restore
    private int mSaveInstanceStateItemIndex = -1;

    // Content
    private ArrayList<ItemInfo> mApps;
    private ArrayList<Object> mWidgets;

    // Caching
    private IconCache mIconCache;

    // Dimens
    private int mContentWidth, mContentHeight;
    private int mWidgetCountX, mWidgetCountY;
    private PagedViewCellLayout mWidgetSpacingLayout;
    private int mNumAppsPages;
    private int mNumWidgetPages;
    private Rect mAllAppsPadding = new Rect();

    // Previews & outlines
    ArrayList<AppsCustomizeAsyncTask> mRunningTasks;
    private static final int sPageSleepDelay = 200;

    private Runnable mInflateWidgetRunnable = null;
    private Runnable mBindWidgetRunnable = null;
    static final int WIDGET_NO_CLEANUP_REQUIRED = -1;
    static final int WIDGET_PRELOAD_PENDING = 0;
    static final int WIDGET_BOUND = 1;
    static final int WIDGET_INFLATED = 2;
    int mWidgetCleanupState = WIDGET_NO_CLEANUP_REQUIRED;
    int mWidgetLoadingId = -1;
    PendingAddWidgetInfo mCreateWidgetInfo = null;
    private boolean mDraggingWidget = false;
    boolean mPageBackgroundsVisible = true;

    private Toast mWidgetInstructionToast;

    // Deferral of loading widget previews during launcher transitions
    private boolean mInTransition;
    private ArrayList<AsyncTaskPageData> mDeferredSyncWidgetPageItems = new ArrayList<AsyncTaskPageData>();
    private ArrayList<Runnable> mDeferredPrepareLoadWidgetPreviewsTasks = new ArrayList<Runnable>();

    WidgetPreviewLoader mWidgetPreviewLoader;

    private boolean mInBulkBind;
    private boolean mNeedToUpdatePageCountsAndInvalidateData;
    private float mMaxDistanceForFolderCreation;

    private float mTransitionProgress;
    //??????????
    private boolean syncPagesEnable = true;
    private List<Integer> tempScreens = new ArrayList<Integer>();

    boolean mAnimatingViewIntoPlace = false;
    boolean mChildrenLayersEnabled = true;
    private Runnable mDelayedResizeRunnable;

    // State variable that indicates whether the pages are small (ie when you're
    // in all apps or customize mode) normal normal_hidden spring_loaded overview overview_hidden
    //SPRING_LOADED ??
    public enum State {
        NORMAL, NORMAL_HIDDEN, SPRING_LOADED, OVERVIEW, OVERVIEW_HIDDEN
    };

    public AppsCustomizePagedView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mLayoutInflater = LayoutInflater.from(context);
        mPackageManager = context.getPackageManager();
        mApps = new ArrayList<ItemInfo>();
        mWidgets = new ArrayList<Object>();
        mIconCache = (LauncherAppState.getInstance()).getIconCache();
        mRunningTasks = new ArrayList<AppsCustomizeAsyncTask>();

        // Save the default widget preview background
        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.AppsCustomizePagedView, 0, 0);
        mWidgetCountX = a.getInt(R.styleable.AppsCustomizePagedView_widgetCountX, 2);
        mWidgetCountY = a.getInt(R.styleable.AppsCustomizePagedView_widgetCountY, 2);
        a.recycle();
        mWidgetSpacingLayout = new PagedViewCellLayout(getContext());

        // The padding on the non-matched dimension for the default widget preview icons
        // (top + bottom)
        mFadeInAdjacentScreens = false;

        // Unless otherwise specified this view is important for accessibility.
        if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
            setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
        }
        setSinglePageInViewport();
        DeviceProfile grid = LauncherAppState.getInstance().getDynamicGrid().getDeviceProfile();
        mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx);
        mDragUtils = new DragUtils(mLauncher, this);
        mDragEnforcer = new DropTarget.DragEnforcer(context);
    }

    @Override
    protected void init() {
        super.init();
        mCenterPagesVertically = false;

        Context context = getContext();
        Resources r = context.getResources();
        setDragSlopeThreshold(r.getInteger(R.integer.config_appsCustomizeDragSlopeThreshold) / 100f);

    }

    public void onFinishInflate() {
        super.onFinishInflate();

        LauncherAppState app = LauncherAppState.getInstance();
        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
        setPadding(grid.edgeMarginPx, 2 * grid.edgeMarginPx, grid.edgeMarginPx, 2 * grid.edgeMarginPx);
    }

    void setAllAppsPadding(Rect r) {
        mAllAppsPadding.set(r);
    }

    void setWidgetsPageIndicatorPadding(int pageIndicatorHeight) {
        setPadding(getPaddingLeft(), getPaddingTop(), getPaddingRight(), pageIndicatorHeight);
    }

    WidgetPreviewLoader getWidgetPreviewLoader() {
        if (mWidgetPreviewLoader == null) {
            mWidgetPreviewLoader = new WidgetPreviewLoader(mLauncher);
        }
        return mWidgetPreviewLoader;
    }

    /** Returns the item index of the center item on this page so that we can restore to this
     *  item index when we rotate. */
    private int getMiddleComponentIndexOnCurrentPage() {
        int i = -1;
        if (getPageCount() > 0) {
            int currentPage = getCurrentPage();
            if (mContentType == ContentType.Applications) {
                AppsCustomizeCellLayout layout = (AppsCustomizeCellLayout) getPageAt(currentPage);
                ShortcutAndWidgetContainer childrenLayout = layout.getShortcutsAndWidgets();
                int numItemsPerPage = mCellCountX * mCellCountY;
                int childCount = childrenLayout.getChildCount();
                if (childCount > 0) {
                    i = (currentPage * numItemsPerPage) + (childCount / 2);
                }
            } else if (mContentType == ContentType.Widgets) {
                int numApps = mApps.size();
                PagedViewGridLayout layout = (PagedViewGridLayout) getPageAt(currentPage);
                int numItemsPerPage = mWidgetCountX * mWidgetCountY;
                int childCount = layout.getChildCount();
                if (childCount > 0) {
                    i = numApps + (currentPage * numItemsPerPage) + (childCount / 2);
                }
            } else {
                throw new RuntimeException("Invalid ContentType");
            }
        }
        return i;
    }

    /** Get the index of the item to restore to if we need to restore the current page. */
    int getSaveInstanceStateIndex() {
        if (mSaveInstanceStateItemIndex == -1) {
            mSaveInstanceStateItemIndex = getMiddleComponentIndexOnCurrentPage();
        }
        return mSaveInstanceStateItemIndex;
    }

    /** Returns the page in the current orientation which is expected to contain the specified
     *  item index. */
    int getPageForComponent(int index) {
        if (index < 0)
            return 0;

        if (index < mApps.size()) {
            int numItemsPerPage = mCellCountX * mCellCountY;
            return (index / numItemsPerPage);
        } else {
            int numItemsPerPage = mWidgetCountX * mWidgetCountY;
            return (index - mApps.size()) / numItemsPerPage;
        }
    }

    /** Restores the page for an item at the specified index */
    void restorePageForIndex(int index) {
        if (index < 0)
            return;
        mSaveInstanceStateItemIndex = index;
    }

    private void updatePageCounts() {
        mNumWidgetPages = (int) Math.ceil(mWidgets.size() / (float) (mWidgetCountX * mWidgetCountY));
        mNumAppsPages = (int) Math.ceil((float) mApps.size() / (mCellCountX * mCellCountY));
    }

    protected void onDataReady(int width, int height) {
        // Now that the data is ready, we can calculate the content width, the number of cells to
        // use for each page
        LauncherAppState app = LauncherAppState.getInstance();
        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
        mCellCountX = (int) grid.allAppsNumCols;
        mCellCountY = (int) grid.allAppsNumRows;
        updatePageCounts();

        // Force a measure to update recalculate the gaps
        mContentWidth = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
        mContentHeight = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
        int widthSpec = MeasureSpec.makeMeasureSpec(mContentWidth, MeasureSpec.AT_MOST);
        int heightSpec = MeasureSpec.makeMeasureSpec(mContentHeight, MeasureSpec.AT_MOST);
        mWidgetSpacingLayout.measure(widthSpec, heightSpec);

        final boolean hostIsTransitioning = getTabHost().isInTransition();
        int page = getPageForComponent(mSaveInstanceStateItemIndex);
        invalidatePageData(Math.max(0, page), hostIsTransitioning);
    }

    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        if (!isDataReady()) {
            if ((LauncherAppState.isDisableAllApps() || !mApps.isEmpty())) {// && !mWidgets.isEmpty()
                post(new Runnable() {
                    // This code triggers requestLayout so must be posted outside of the
                    // layout pass.
                    public void run() {
                        if (Utilities.isViewAttachedToWindow(AppsCustomizePagedView.this)) {
                            setDataIsReady();
                            onDataReady(getMeasuredWidth(), getMeasuredHeight());
                        }
                    }
                });
            }
        }
    }

    public void setOnDataReady() {
        if (!isDataReady()) {
            //?? mApps
            //            if ((LauncherAppState.isDisableAllApps() || !mApps.isEmpty())) {// && !mWidgets.isEmpty()
            if (Utilities.isViewAttachedToWindow(AppsCustomizePagedView.this)) {
                setDataIsReady();
                onDataReady(getMeasuredWidth(), getMeasuredHeight());
            }
            //            }
        }
    }

    public void onPackagesUpdated(ArrayList<Object> widgetsAndShortcuts) {
        LauncherAppState app = LauncherAppState.getInstance();
        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();

        // Get the list of widgets and shortcuts
        mWidgets.clear();
        for (Object o : widgetsAndShortcuts) {
            if (o instanceof AppWidgetProviderInfo) {
                AppWidgetProviderInfo widget = (AppWidgetProviderInfo) o;
                if (!app.shouldShowAppOrWidgetProvider(widget.provider)) {
                    continue;
                }
                if (widget.minWidth > 0 && widget.minHeight > 0) {
                    // Ensure that all widgets we show can be added on a workspace of this size
                    int[] spanXY = Launcher.getSpanForWidget(mLauncher, widget);
                    int[] minSpanXY = Launcher.getMinSpanForWidget(mLauncher, widget);
                    int minSpanX = Math.min(spanXY[0], minSpanXY[0]);
                    int minSpanY = Math.min(spanXY[1], minSpanXY[1]);
                    if (minSpanX <= (int) grid.numColumns && minSpanY <= (int) grid.numRows) {
                        mWidgets.add(widget);
                    } else {
                        Log.e(TAG, "Widget " + widget.provider + " can not fit on this device (" + widget.minWidth
                                + ", " + widget.minHeight + ")");
                    }
                } else {
                    Log.e(TAG, "Widget " + widget.provider + " has invalid dimensions (" + widget.minWidth + ", "
                            + widget.minHeight + ")");
                }
            } else {
                // just add shortcuts
                mWidgets.add(o);
            }
        }
        updatePageCountsAndInvalidateData();
    }

    public void setBulkBind(boolean bulkBind) {
        if (bulkBind) {
            mInBulkBind = true;
        } else {
            mInBulkBind = false;
            if (mNeedToUpdatePageCountsAndInvalidateData) {
                updatePageCountsAndInvalidateData();
            }
        }
    }

    private void updatePageCountsAndInvalidateData() {
        if (mInBulkBind) {
            mNeedToUpdatePageCountsAndInvalidateData = true;
        } else {
            updatePageCounts();
            invalidateOnDataChange();
            mNeedToUpdatePageCountsAndInvalidateData = false;
        }
    }

    @Override
    public void onClick(View v) {
        // When we have exited all apps or are in transition, disregard clicks
        if (!mLauncher.isAllAppsVisible() || mLauncher.getWorkspace().isSwitchingState()
                || !(v instanceof PagedViewWidget))
            return;

        // Let the user know that they have to long press to add a widget
        if (mWidgetInstructionToast != null) {
            mWidgetInstructionToast.cancel();
        }
        mWidgetInstructionToast = Toast.makeText(getContext(), R.string.long_press_widget_to_add,
                Toast.LENGTH_SHORT);
        mWidgetInstructionToast.show();

        // Create a little animation to show that the widget can move
        float offsetY = getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
        final ImageView p = (ImageView) v.findViewById(R.id.widget_preview);
        AnimatorSet bounce = LauncherAnimUtils.createAnimatorSet();
        ValueAnimator tyuAnim = LauncherAnimUtils.ofFloat(p, "translationY", offsetY);
        tyuAnim.setDuration(125);
        ValueAnimator tydAnim = LauncherAnimUtils.ofFloat(p, "translationY", 0f);
        tydAnim.setDuration(100);
        bounce.play(tyuAnim).before(tydAnim);
        bounce.setInterpolator(new AccelerateInterpolator());
        bounce.start();
    }

    @Override
    public boolean onLongClick(View v) {
        System.out.println("appsCustomizePagedView onLongClick AppsCustomizePagedView");
        if (isLongClicked) {
            CellLayout.CellInfo longClickCellInfo = null;
            View itemUnderLongClick = null;
            if (v.getTag() instanceof ItemInfo) {
                ItemInfo info = (ItemInfo) v.getTag();
                longClickCellInfo = new CellLayout.CellInfo(v, info);
                itemUnderLongClick = longClickCellInfo.cell;
                //            resetAddInfo();
            }
            final boolean inHotseat = mLauncher.isHotseatLayout(v);
            //            boolean allowLongPress = inHotseat || mWorkspace.allowLongPress();
            boolean allowLongPress = inHotseat || true;
            if (allowLongPress && !mDragController.isDragging()) {
                if (itemUnderLongClick == null) {
                    // User long pressed on empty space
                    System.out.println("User long pressed on empty space");
                    //                    mWorkspace.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS,
                    //                            HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
                    //                    if (mWorkspace.isInOverviewMode()) {
                    //                        mWorkspace.startReordering(v);
                    //                    } else {
                    //                        mWorkspace.enterOverviewMode();
                    //                    }
                } else {
                    final boolean isAllAppsButton = inHotseat && mLauncher.isAllAppsButtonRank(mLauncher
                            .getHotseat().getOrderInHotseat(longClickCellInfo.cellX, longClickCellInfo.cellY));
                    if (!(itemUnderLongClick instanceof Folder || isAllAppsButton)) {
                        // User long pressed on an item
                        mLauncher.getAllAppsButton().setIsEnable(true);
                        startDrag(longClickCellInfo);
                    }
                }
            }
            //            startDrag(longClickCellInfo);
            isLongClicked = false;
            return true;
        } else {
            return super.onLongClick(v);
        }
    }

    public boolean onKey(View v, int keyCode, KeyEvent event) {
        return FocusHelper.handleAppsCustomizeKeyEvent(v, keyCode, event);
    }

    /*
     * PagedViewWithDraggableItems implementation
     */
    @Override
    protected void determineDraggingStart(android.view.MotionEvent ev) {
        // Disable dragging by pulling an app down for now.

    }

    private void beginDraggingApplication(View v) {
        mLauncher.getWorkspace().beginDragShared(v, this);
    }

    static Bundle getDefaultOptionsForWidget(Launcher launcher, PendingAddWidgetInfo info) {
        Bundle options = null;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            AppWidgetResizeFrame.getWidgetSizeRanges(launcher, info.spanX, info.spanY, sTmpRect);
            Rect padding = AppWidgetHostView.getDefaultPaddingForWidget(launcher, info.componentName, null);

            float density = launcher.getResources().getDisplayMetrics().density;
            int xPaddingDips = (int) ((padding.left + padding.right) / density);
            int yPaddingDips = (int) ((padding.top + padding.bottom) / density);

            options = new Bundle();
            options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, sTmpRect.left - xPaddingDips);
            options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, sTmpRect.top - yPaddingDips);
            options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, sTmpRect.right - xPaddingDips);
            options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, sTmpRect.bottom - yPaddingDips);
        }
        return options;
    }

    private void preloadWidget(final PendingAddWidgetInfo info) {
        final AppWidgetProviderInfo pInfo = info.info;
        final Bundle options = getDefaultOptionsForWidget(mLauncher, info);

        if (pInfo.configure != null) {
            info.bindOptions = options;
            return;
        }

        mWidgetCleanupState = WIDGET_PRELOAD_PENDING;
        mBindWidgetRunnable = new Runnable() {
            @Override
            public void run() {
                mWidgetLoadingId = mLauncher.getAppWidgetHost().allocateAppWidgetId();
                if (AppWidgetManagerCompat.getInstance(mLauncher).bindAppWidgetIdIfAllowed(mWidgetLoadingId, pInfo,
                        options)) {
                    mWidgetCleanupState = WIDGET_BOUND;
                }
            }
        };
        post(mBindWidgetRunnable);

        mInflateWidgetRunnable = new Runnable() {
            @Override
            public void run() {
                if (mWidgetCleanupState != WIDGET_BOUND) {
                    return;
                }
                AppWidgetHostView hostView = mLauncher.getAppWidgetHost().createView(getContext(), mWidgetLoadingId,
                        pInfo);
                info.boundWidget = hostView;
                mWidgetCleanupState = WIDGET_INFLATED;
                hostView.setVisibility(INVISIBLE);
                int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(info.spanX, info.spanY, info, false);

                // We want the first widget layout to be the correct size. This will be important
                // for width size reporting to the AppWidgetManager.
                DragLayer.LayoutParams lp = new DragLayer.LayoutParams(unScaledSize[0], unScaledSize[1]);
                lp.x = lp.y = 0;
                lp.customPosition = true;
                hostView.setLayoutParams(lp);
                mLauncher.getDragLayer().addView(hostView);
            }
        };
        post(mInflateWidgetRunnable);
    }

    @Override
    public void onShortPress(View v) {
        // We are anticipating a long press, and we use this time to load bind and instantiate
        // the widget. This will need to be cleaned up if it turns out no long press occurs.
        if (mCreateWidgetInfo != null) {
            // Just in case the cleanup process wasn't properly executed. This shouldn't happen.
            cleanupWidgetPreloading(false);
        }
        mCreateWidgetInfo = new PendingAddWidgetInfo((PendingAddWidgetInfo) v.getTag());
        preloadWidget(mCreateWidgetInfo);
    }

    private void cleanupWidgetPreloading(boolean widgetWasAdded) {
        if (!widgetWasAdded) {
            // If the widget was not added, we may need to do further cleanup.
            PendingAddWidgetInfo info = mCreateWidgetInfo;
            mCreateWidgetInfo = null;

            if (mWidgetCleanupState == WIDGET_PRELOAD_PENDING) {
                // We never did any preloading, so just remove pending callbacks to do so
                removeCallbacks(mBindWidgetRunnable);
                removeCallbacks(mInflateWidgetRunnable);
            } else if (mWidgetCleanupState == WIDGET_BOUND) {
                // Delete the widget id which was allocated
                if (mWidgetLoadingId != -1) {
                    mLauncher.getAppWidgetHost().deleteAppWidgetId(mWidgetLoadingId);
                }

                // We never got around to inflating the widget, so remove the callback to do so.
                removeCallbacks(mInflateWidgetRunnable);
            } else if (mWidgetCleanupState == WIDGET_INFLATED) {
                // Delete the widget id which was allocated
                if (mWidgetLoadingId != -1) {
                    mLauncher.getAppWidgetHost().deleteAppWidgetId(mWidgetLoadingId);
                }

                // The widget was inflated and added to the DragLayer -- remove it.
                AppWidgetHostView widget = info.boundWidget;
                mLauncher.getDragLayer().removeView(widget);
            }
        }
        mWidgetCleanupState = WIDGET_NO_CLEANUP_REQUIRED;
        mWidgetLoadingId = -1;
        mCreateWidgetInfo = null;
        PagedViewWidget.resetShortPressTarget();
    }

    @Override
    public void cleanUpShortPress(View v) {
        if (!mDraggingWidget) {
            cleanupWidgetPreloading(false);
        }
    }

    private boolean beginDraggingWidget(View v) {
        mDraggingWidget = true;
        // Get the widget preview as the drag representation
        ImageView image = (ImageView) v.findViewById(R.id.widget_preview);
        PendingAddItemInfo createItemInfo = (PendingAddItemInfo) v.getTag();

        // If the ImageView doesn't have a drawable yet, the widget preview hasn't been loaded and
        // we abort the drag.
        if (image.getDrawable() == null) {
            mDraggingWidget = false;
            return false;
        }

        // Compose the drag image
        Bitmap preview;
        Bitmap outline;
        float scale = 1f;
        Point previewPadding = null;

        if (createItemInfo instanceof PendingAddWidgetInfo) {
            // This can happen in some weird cases involving multi-touch. We can't start dragging
            // the widget if this is null, so we break out.
            if (mCreateWidgetInfo == null) {
                return false;
            }

            PendingAddWidgetInfo createWidgetInfo = mCreateWidgetInfo;
            createItemInfo = createWidgetInfo;
            int spanX = createItemInfo.spanX;
            int spanY = createItemInfo.spanY;
            int[] size = mLauncher.getWorkspace().estimateItemSize(spanX, spanY, createWidgetInfo, true);

            FastBitmapDrawable previewDrawable = (FastBitmapDrawable) image.getDrawable();
            float minScale = 1.25f;
            int maxWidth, maxHeight;
            maxWidth = Math.min((int) (previewDrawable.getIntrinsicWidth() * minScale), size[0]);
            maxHeight = Math.min((int) (previewDrawable.getIntrinsicHeight() * minScale), size[1]);

            int[] previewSizeBeforeScale = new int[1];

            preview = getWidgetPreviewLoader().generateWidgetPreview(createWidgetInfo.info, spanX, spanY, maxWidth,
                    maxHeight, null, previewSizeBeforeScale);

            // Compare the size of the drag preview to the preview in the AppsCustomize tray
            int previewWidthInAppsCustomize = Math.min(previewSizeBeforeScale[0],
                    getWidgetPreviewLoader().maxWidthForWidgetPreview(spanX));
            scale = previewWidthInAppsCustomize / (float) preview.getWidth();

            // The bitmap in the AppsCustomize tray is always the the same size, so there
            // might be extra pixels around the preview itself - this accounts for that
            if (previewWidthInAppsCustomize < previewDrawable.getIntrinsicWidth()) {
                int padding = (previewDrawable.getIntrinsicWidth() - previewWidthInAppsCustomize) / 2;
                previewPadding = new Point(padding, 0);
            }
        } else {
            PendingAddShortcutInfo createShortcutInfo = (PendingAddShortcutInfo) v.getTag();
            Drawable icon = mIconCache.getFullResIcon(createShortcutInfo.shortcutActivityInfo);
            preview = Utilities.createIconBitmap(icon, mLauncher);
            createItemInfo.spanX = createItemInfo.spanY = 1;
        }

        // Don't clip alpha values for the drag outline if we're using the default widget preview
        boolean clipAlpha = !(createItemInfo instanceof PendingAddWidgetInfo
                && (((PendingAddWidgetInfo) createItemInfo).previewImage == 0));

        // Save the preview for the outline generation, then dim the preview
        outline = Bitmap.createScaledBitmap(preview, preview.getWidth(), preview.getHeight(), false);

        // Start the drag
        mLauncher.lockScreenOrientation();
        mLauncher.getWorkspace().onDragStartedWithItem(createItemInfo, outline, clipAlpha);
        mDragController.startDrag(image, preview, this, createItemInfo, DragController.DRAG_ACTION_COPY,
                previewPadding, scale);
        outline.recycle();
        preview.recycle();
        return true;
    }

    @Override
    protected boolean beginDragging(final View v) {
        if (!super.beginDragging(v))
            return false;

        if (v instanceof BubbleTextView) {
            beginDraggingApplication(v);
        } else if (v instanceof PagedViewWidget) {
            if (!beginDraggingWidget(v)) {
                return false;
            }
        }

        // We delay entering spring-loaded mode slightly to make sure the UI
        // thready is free of any work.
        postDelayed(new Runnable() {
            @Override
            public void run() {
                // We don't enter spring-loaded mode if the drag has been cancelled
                if (mLauncher.getDragController().isDragging()) {
                    // Go into spring loaded mode (must happen before we startDrag())
                    mLauncher.enterSpringLoadedDragMode();
                }
            }
        }, 150);

        return true;
    }

    /**
     * Clean up after dragging.
     *
     * @param target where the item was dragged to (can be null if the item was flung)
     */
    private void endDragging(View target, boolean isFlingToDelete, boolean success) {
        if (isFlingToDelete || !success || (target != mLauncher.getWorkspace()
                && !(target instanceof DeleteDropTarget) && !(target instanceof Folder))) {
            // Exit spring loaded mode if we have not successfully dropped or have not handled the
            // drop in Workspace
            mLauncher.exitSpringLoadedDragModeDelayed(true, Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
            mLauncher.unlockScreenOrientation(false);
        } else {
            mLauncher.unlockScreenOrientation(false);
        }
    }

    @Override
    public View getContent() {
        if (getChildCount() > 0) {
            return getChildAt(0);
        }
        return null;
    }

    @Override
    public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) {
        mInTransition = true;
        if (toWorkspace) {
            cancelAllTasks();
        }
    }

    @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) {
        mInTransition = false;
        for (AsyncTaskPageData d : mDeferredSyncWidgetPageItems) {
            onSyncWidgetPageItems(d, false);
        }
        mDeferredSyncWidgetPageItems.clear();
        for (Runnable r : mDeferredPrepareLoadWidgetPreviewsTasks) {
            r.run();
        }
        mDeferredPrepareLoadWidgetPreviewsTasks.clear();
        mForceDrawAllChildrenNextFrame = !toWorkspace;
    }

    @Override
    public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, boolean success) {
        // Return early and wait for onFlingToDeleteCompleted if this was the result of a fling
        if (isFlingToDelete)
            return;

        endDragging(target, false, success);

        // Display an error message if the drag failed due to there not being enough space on the
        // target layout we were dropping on.
        if (!success) {
            boolean showOutOfSpaceMessage = false;
            if (target instanceof Workspace) {
                int currentScreen = mLauncher.getCurrentWorkspaceScreen();
                Workspace workspace = (Workspace) target;
                CellLayout layout = (CellLayout) workspace.getChildAt(currentScreen);
                ItemInfo itemInfo = (ItemInfo) d.dragInfo;
                if (layout != null) {
                    layout.calculateSpans(itemInfo);
                    showOutOfSpaceMessage = !layout.findCellForSpan(null, itemInfo.spanX, itemInfo.spanY);
                }
            }
            if (showOutOfSpaceMessage) {
                mLauncher.showOutOfSpaceMessage(false);
            }

            d.deferDragViewCleanupPostAnimation = false;
        }
        cleanupWidgetPreloading(success);
        mDraggingWidget = false;
    }

    @Override
    public void onFlingToDeleteCompleted() {
        // We just dismiss the drag when we fling, so cleanup here
        endDragging(null, true, true);
        cleanupWidgetPreloading(false);
        mDraggingWidget = false;
    }

    @Override
    public boolean supportsFlingToDelete() {
        return true;
    }

    @Override
    public boolean supportsAppInfoDropTarget() {
        return true;
    }

    @Override
    public boolean supportsDeleteDropTarget() {
        return false;
    }

    @Override
    public float getIntrinsicIconScaleFactor() {
        LauncherAppState app = LauncherAppState.getInstance();
        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
        return (float) grid.allAppsIconSizePx / grid.iconSizePx;
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        cancelAllTasks();
    }

    @Override
    public void trimMemory() {
        super.trimMemory();
        clearAllWidgetPages();
    }

    public void clearAllWidgetPages() {
        cancelAllTasks();
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            View v = getPageAt(i);
            if (v instanceof PagedViewGridLayout) {
                ((PagedViewGridLayout) v).removeAllViewsOnPage();
                mDirtyPageContent.set(i, true);
            }
        }
    }

    private void cancelAllTasks() {
        // Clean up all the async tasks
        Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
        while (iter.hasNext()) {
            AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
            task.cancel(false);
            iter.remove();
            mDirtyPageContent.set(task.page, true);

            // We've already preallocated the views for the data to load into, so clear them as well
            View v = getPageAt(task.page);
            if (v instanceof PagedViewGridLayout) {
                ((PagedViewGridLayout) v).removeAllViewsOnPage();
            }
        }
        mDeferredSyncWidgetPageItems.clear();
        mDeferredPrepareLoadWidgetPreviewsTasks.clear();
    }

    public void setContentType(ContentType type) {
        // Widgets appear to be cleared every time you leave, always force invalidate for them
        if (mContentType != type || type == ContentType.Widgets) {
            int page = (mContentType != type) ? 0 : getCurrentPage();
            mContentType = type;
            invalidatePageData(page, true);
        }
    }

    public ContentType getContentType() {
        return mContentType;
    }

    protected void snapToPage(int whichPage, int delta, int duration) {
        super.snapToPage(whichPage, delta, duration);

        // Update the thread priorities given the direction lookahead
        Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
        while (iter.hasNext()) {
            AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
            int pageIndex = task.page;
            if ((mNextPage > mCurrentPage && pageIndex >= mCurrentPage)
                    || (mNextPage < mCurrentPage && pageIndex <= mCurrentPage)) {
                task.setThreadPriority(getThreadPriorityForPage(pageIndex));
            } else {
                task.setThreadPriority(Process.THREAD_PRIORITY_LOWEST);
            }
        }
    }

    /*
     * Apps PagedView implementation
     */
    private void setVisibilityOnChildren(ViewGroup layout, int visibility) {
        int childCount = layout.getChildCount();
        for (int i = 0; i < childCount; ++i) {
            layout.getChildAt(i).setVisibility(visibility);
        }
    }

    private void setupPage(AppsCustomizeCellLayout layout) {
        layout.setGridSize(mCellCountX, mCellCountY);

        // Note: We force a measure here to get around the fact that when we do layout calculations
        // immediately after syncing, we don't have a proper width.  That said, we already know the
        // expected page width, so we can actually optimize by hiding all the TextView-based
        // children that are expensive to measure, and let that happen naturally later.
        setVisibilityOnChildren(layout, View.GONE);
        int widthSpec = MeasureSpec.makeMeasureSpec(mContentWidth, MeasureSpec.AT_MOST);
        int heightSpec = MeasureSpec.makeMeasureSpec(mContentHeight, MeasureSpec.AT_MOST);
        layout.measure(widthSpec, heightSpec);

        Drawable bg = getContext().getResources().getDrawable(R.drawable.quantum_panel);
        if (bg != null) {
            bg.setAlpha(mPageBackgroundsVisible ? 255 : 0);
            //            layout.setBackground(bg);
            layout.setBackgroundColor(Color.TRANSPARENT);
        }

        setVisibilityOnChildren(layout, View.VISIBLE);
    }

    public void setPageBackgroundsVisible(boolean visible) {
        mPageBackgroundsVisible = visible;
        int childCount = getChildCount();
        for (int i = 0; i < childCount; ++i) {
            Drawable bg = getChildAt(i).getBackground();
            if (bg != null) {
                bg.setAlpha(visible ? 255 : 0);
            }
        }
    }

    public void syncAppsPageItems(int page) {
        ArrayList<ItemInfo> data = getPageData(page);
        int cv = data.size();
        for (int i = 0; i < cv; i++) {
            System.out.println("LauncherModel i:" + page + "  " + data.get(i));
        }
        if (mLauncher.getModel().isFirst) {
            // ensure that we have the right number of items on the pages
            final boolean isRtl = isLayoutRtl();
            int numCells = mCellCountX * mCellCountY;
            int startIndex = page * numCells;
            int endIndex = Math.min(startIndex + numCells, mApps.size());
            AppsCustomizeCellLayout layout = (AppsCustomizeCellLayout) getPageAt(page);

            layout.removeAllViewsOnPage();
            ArrayList<Object> items = new ArrayList<Object>();
            ArrayList<Bitmap> images = new ArrayList<Bitmap>();
            for (int i = startIndex; i < endIndex; ++i) {
                AppInfo info = (AppInfo) data.get(i);
                View icon = createAllApp(R.layout.apps_customize_application, layout, info);
                int index = i - startIndex;
                int x = index % mCellCountX;
                int y = index / mCellCountX;
                if (isRtl) {
                    x = mCellCountX - x - 1;
                }
                //                layout.addViewToCellLayout(icon, -1, i, new CellLayout.LayoutParams(x, y, 1, 1), false);
                addInScreenFromBind(icon, page, x, y, info, layout);
                items.add(info);
                images.add(info.iconBitmap);

                info.screenId = page;
                info.cellX = x;
                info.cellY = y;
                info.rank = i;
                info.container = LauncherSettings.Allapps.CONTAINER_ALLAPPS;
                info.id = LauncherAppState.getLauncherProvider().getItemId(LauncherProvider.TABLE_ALLAPPS);
                LauncherModel.addAllAppsItemToDatabase(getContext(), info, false);
            }
            enableHwLayersOnVisiblePages();
        } else {

            int count = data.size();
            for (int i = 0; i < count; i++) {
                ItemInfo item = data.get(i);
                AppsCustomizeCellLayout layout = (AppsCustomizeCellLayout) getScreenWithId(item.screenId);
                int x = i % mCellCountX;
                int y = i / mCellCountX;
                switch (item.itemType) {
                case LauncherSettings.Allapps.ITEM_TYPE_APPLICATION:
                case LauncherSettings.Allapps.ITEM_TYPE_SHORTCUT:
                    AppInfo info = (AppInfo) item;
                    View shortcut = createAllApp(R.layout.apps_customize_application, layout, info);
                    //                        CellLayout cl = getScreenWithId(item.screenId);
                    //                        if (cl != null && cl.isOccupied(item.cellX, item.cellY)) {
                    //                            View v = cl.getChildAt(item.cellX, item.cellY);
                    //                            Object tag = v.getTag();
                    //                            String desc = "Collision while binding AllApps item: " + item
                    //                                    + ". Collides with " + tag;
                    //                            if (LauncherAppState.isDogfoodBuild()) {
                    //                               throw (new RuntimeException(desc));
                    //                            } else {
                    //                                Log.d(TAG, desc);
                    //                            }
                    //                        }
                    addInScreenFromBind(shortcut, item.screenId, x, y, info, layout);
                    //                        layout.addViewToCellLayout(shortcut, -1, i, new CellLayout.LayoutParams(info.cellX, info.cellY, 1, 1), false);
                    break;
                case LauncherSettings.Allapps.ITEM_TYPE_FOLDER:
                    FolderIcon newFolder = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, layout,
                            (FolderInfo) item, mIconCache);
                    addInScreenFromBind(newFolder, item.screenId, x, y, item, layout);
                    //                        layout.addViewToCellLayout(newFolder, -1, i, new CellLayout.LayoutParams(item.cellX, item.cellY, 1, 1), false);
                    break;
                default:
                    throw new RuntimeException("Invalid Item Type");
                }
            }
        }
    }

    private Comparator<ItemInfo> comparator = new Comparator<ItemInfo>() {

        @Override
        public int compare(ItemInfo lhs, ItemInfo rhs) {
            int rankl = lhs.rank;
            int rankr = rhs.rank;
            if (rankl < 0 && rankr >= 0) {
                return rankr;
            } else if (rankr < 0 && rankl >= 0) {
                return rankl;
            } else if (rankl < 0 && rankr < 0) {
                return lhs.title.toString().compareTo(rhs.title.toString());
            } else {
                return rankl - rankr;
            }
        }
    };

    public ArrayList<ItemInfo> getPageData(int page) {
        if (page == 2) {
            System.out.println("");
        }
        if (mLauncher.getModel().isFirst) {
            return mApps;
        } else {
            ArrayList<ItemInfo> data = new ArrayList<ItemInfo>();
            int count = mApps.size();
            for (int i = 0; i < count; i++) {
                ItemInfo item = mApps.get(i);
                if (item.screenId == page) {
                    data.add(item);
                }
            }
            Collections.sort(data, comparator);
            return data;
        }
    }

    private View createAllApp(int layoutResId, AppsCustomizeCellLayout parent, AppInfo info) {
        BubbleTextView icon = (BubbleTextView) mLayoutInflater.inflate(layoutResId, parent, false);
        icon.applyFromApplicationInfo(info, false);
        icon.setOnClickListener(mLauncher);
        icon.setOnLongClickListener(this);
        icon.setOnTouchListener(this);
        icon.setOnKeyListener(this);
        icon.setOnFocusChangeListener(parent.mFocusHandlerView);
        //FIXME ?? 
        icon.setTextColor(Color.BLACK);
        //FIXME ?? ??
        // ???
        //layout
        icon.setBackgroundColor(Color.TRANSPARENT);
        return icon;
    }

    /**
     * A helper to return the priority for loading of the specified widget page.
     */
    private int getWidgetPageLoadPriority(int page) {
        // If we are snapping to another page, use that index as the target page index
        int toPage = mCurrentPage;
        if (mNextPage > -1) {
            toPage = mNextPage;
        }

        // We use the distance from the target page as an initial guess of priority, but if there
        // are no pages of higher priority than the page specified, then bump up the priority of
        // the specified page.
        Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
        int minPageDiff = Integer.MAX_VALUE;
        while (iter.hasNext()) {
            AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
            minPageDiff = Math.abs(task.page - toPage);
        }

        int rawPageDiff = Math.abs(page - toPage);
        return rawPageDiff - Math.min(rawPageDiff, minPageDiff);
    }

    /**
     * Return the appropriate thread priority for loading for a given page (we give the current
     * page much higher priority)
     */
    private int getThreadPriorityForPage(int page) {
        // TODO-APPS_CUSTOMIZE: detect number of cores and set thread priorities accordingly below
        int pageDiff = getWidgetPageLoadPriority(page);
        if (pageDiff <= 0) {
            return Process.THREAD_PRIORITY_LESS_FAVORABLE;
        } else if (pageDiff <= 1) {
            return Process.THREAD_PRIORITY_LOWEST;
        } else {
            return Process.THREAD_PRIORITY_LOWEST;
        }
    }

    private int getSleepForPage(int page) {
        int pageDiff = getWidgetPageLoadPriority(page);
        return Math.max(0, pageDiff * sPageSleepDelay);
    }

    /**
     * Creates and executes a new AsyncTask to load a page of widget previews.
     */
    private void prepareLoadWidgetPreviewsTask(int page, ArrayList<Object> widgets, int cellWidth, int cellHeight,
            int cellCountX) {

        // Prune all tasks that are no longer needed
        Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
        while (iter.hasNext()) {
            AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
            int taskPage = task.page;
            if (taskPage < getAssociatedLowerPageBound(mCurrentPage)
                    || taskPage > getAssociatedUpperPageBound(mCurrentPage)) {
                task.cancel(false);
                iter.remove();
            } else {
                task.setThreadPriority(getThreadPriorityForPage(taskPage));
            }
        }

        // We introduce a slight delay to order the loading of side pages so that we don't thrash
        final int sleepMs = getSleepForPage(page);
        AsyncTaskPageData pageData = new AsyncTaskPageData(page, widgets, cellWidth, cellHeight,
                new AsyncTaskCallback() {
                    @Override
                    public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) {
                        try {
                            try {
                                Thread.sleep(sleepMs);
                            } catch (Exception e) {
                            }
                            loadWidgetPreviewsInBackground(task, data);
                        } finally {
                            if (task.isCancelled()) {
                                data.cleanup(true);
                            }
                        }
                    }
                }, new AsyncTaskCallback() {
                    @Override
                    public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) {
                        mRunningTasks.remove(task);
                        if (task.isCancelled())
                            return;
                        // do cleanup inside onSyncWidgetPageItems
                        onSyncWidgetPageItems(data, false);
                    }
                }, getWidgetPreviewLoader());

        // Ensure that the task is appropriately prioritized and runs in parallel
        AppsCustomizeAsyncTask t = new AppsCustomizeAsyncTask(page, AsyncTaskPageData.Type.LoadWidgetPreviewData);
        t.setThreadPriority(getThreadPriorityForPage(page));
        t.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, pageData);
        mRunningTasks.add(t);
    }

    /*
     * Widgets PagedView implementation
     */
    private void setupPage(PagedViewGridLayout layout) {
        // Note: We force a measure here to get around the fact that when we do layout calculations
        // immediately after syncing, we don't have a proper width.
        int widthSpec = MeasureSpec.makeMeasureSpec(mContentWidth, MeasureSpec.AT_MOST);
        int heightSpec = MeasureSpec.makeMeasureSpec(mContentHeight, MeasureSpec.AT_MOST);

        Drawable bg = getContext().getResources().getDrawable(R.drawable.quantum_panel_dark);
        if (bg != null) {
            bg.setAlpha(mPageBackgroundsVisible ? 255 : 0);
            layout.setBackground(bg);
        }
        layout.measure(widthSpec, heightSpec);
    }

    /**
     * Widget
     * @param page
     * @param immediate
     */
    public void syncWidgetPageItems(final int page, final boolean immediate) {
        int numItemsPerPage = mWidgetCountX * mWidgetCountY;

        final PagedViewGridLayout layout = (PagedViewGridLayout) getPageAt(page);

        // Calculate the dimensions of each cell we are giving to each widget
        final ArrayList<Object> items = new ArrayList<Object>();
        int contentWidth = mContentWidth - layout.getPaddingLeft() - layout.getPaddingRight();
        final int cellWidth = contentWidth / mWidgetCountX;
        int contentHeight = mContentHeight - layout.getPaddingTop() - layout.getPaddingBottom();

        final int cellHeight = contentHeight / mWidgetCountY;

        // Prepare the set of widgets to load previews for in the background
        int offset = page * numItemsPerPage;
        for (int i = offset; i < Math.min(offset + numItemsPerPage, mWidgets.size()); ++i) {
            items.add(mWidgets.get(i));
        }

        // Prepopulate the pages with the other widget info, and fill in the previews later
        layout.setColumnCount(layout.getCellCountX());
        for (int i = 0; i < items.size(); ++i) {
            Object rawInfo = items.get(i);
            PendingAddItemInfo createItemInfo = null;
            PagedViewWidget widget = (PagedViewWidget) mLayoutInflater.inflate(R.layout.apps_customize_widget,
                    layout, false);
            if (rawInfo instanceof AppWidgetProviderInfo) {
                // Fill in the widget information
                AppWidgetProviderInfo info = (AppWidgetProviderInfo) rawInfo;
                createItemInfo = new PendingAddWidgetInfo(info, null, null);

                // Determine the widget spans and min resize spans.
                int[] spanXY = Launcher.getSpanForWidget(mLauncher, info);
                createItemInfo.spanX = spanXY[0];
                createItemInfo.spanY = spanXY[1];
                int[] minSpanXY = Launcher.getMinSpanForWidget(mLauncher, info);
                createItemInfo.minSpanX = minSpanXY[0];
                createItemInfo.minSpanY = minSpanXY[1];

                widget.applyFromAppWidgetProviderInfo(info, -1, spanXY, getWidgetPreviewLoader());
                widget.setTag(createItemInfo);
                widget.setShortPressListener(this);
            } else if (rawInfo instanceof ResolveInfo) {
                // Fill in the shortcuts information
                ResolveInfo info = (ResolveInfo) rawInfo;
                createItemInfo = new PendingAddShortcutInfo(info.activityInfo);
                createItemInfo.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
                createItemInfo.componentName = new ComponentName(info.activityInfo.packageName,
                        info.activityInfo.name);
                widget.applyFromResolveInfo(mPackageManager, info, getWidgetPreviewLoader());
                widget.setTag(createItemInfo);
            }
            widget.setOnClickListener(this);
            widget.setOnLongClickListener(this);
            widget.setOnTouchListener(this);
            widget.setOnKeyListener(this);

            // Layout each widget
            int ix = i % mWidgetCountX;
            int iy = i / mWidgetCountX;

            if (ix > 0) {
                View border = widget.findViewById(R.id.left_border);
                border.setVisibility(View.VISIBLE);
            }
            if (ix < mWidgetCountX - 1) {
                View border = widget.findViewById(R.id.right_border);
                border.setVisibility(View.VISIBLE);
            }

            GridLayout.LayoutParams lp = new GridLayout.LayoutParams(GridLayout.spec(iy, GridLayout.START),
                    GridLayout.spec(ix, GridLayout.TOP));
            lp.width = cellWidth;
            lp.height = cellHeight;
            lp.setGravity(Gravity.TOP | Gravity.START);
            layout.addView(widget, lp);
        }

        // wait until a call on onLayout to start loading, because
        // PagedViewWidget.getPreviewSize() will return 0 if it hasn't been laid out
        // TODO: can we do a measure/layout immediately?
        layout.setOnLayoutListener(new Runnable() {
            public void run() {
                // Load the widget previews
                int maxPreviewWidth = cellWidth;
                int maxPreviewHeight = cellHeight;
                if (layout.getChildCount() > 0) {
                    PagedViewWidget w = (PagedViewWidget) layout.getChildAt(0);
                    int[] maxSize = w.getPreviewSize();
                    maxPreviewWidth = maxSize[0];
                    maxPreviewHeight = maxSize[1];
                }

                getWidgetPreviewLoader().setPreviewSize(maxPreviewWidth, maxPreviewHeight, mWidgetSpacingLayout);
                if (immediate) {
                    AsyncTaskPageData data = new AsyncTaskPageData(page, items, maxPreviewWidth, maxPreviewHeight,
                            null, null, getWidgetPreviewLoader());
                    loadWidgetPreviewsInBackground(null, data);
                    onSyncWidgetPageItems(data, immediate);
                } else {
                    if (mInTransition) {
                        mDeferredPrepareLoadWidgetPreviewsTasks.add(this);
                    } else {
                        prepareLoadWidgetPreviewsTask(page, items, maxPreviewWidth, maxPreviewHeight,
                                mWidgetCountX);
                    }
                }
                layout.setOnLayoutListener(null);
            }
        });
    }

    private void loadWidgetPreviewsInBackground(AppsCustomizeAsyncTask task, AsyncTaskPageData data) {
        // loadWidgetPreviewsInBackground can be called without a task to load a set of widget
        // previews synchronously
        if (task != null) {
            // Ensure that this task starts running at the correct priority
            task.syncThreadPriority();
        }

        // Load each of the widget/shortcut previews
        ArrayList<Object> items = data.items;
        ArrayList<Bitmap> images = data.generatedImages;
        int count = items.size();
        for (int i = 0; i < count; ++i) {
            if (task != null) {
                // Ensure we haven't been cancelled yet
                if (task.isCancelled())
                    break;
                // Before work on each item, ensure that this task is running at the correct
                // priority
                task.syncThreadPriority();
            }

            images.add(getWidgetPreviewLoader().getPreview(items.get(i)));
        }
    }

    private void onSyncWidgetPageItems(AsyncTaskPageData data, boolean immediatelySyncItems) {
        if (!immediatelySyncItems && mInTransition) {
            mDeferredSyncWidgetPageItems.add(data);
            return;
        }
        try {
            int page = data.page;
            PagedViewGridLayout layout = (PagedViewGridLayout) getPageAt(page);

            ArrayList<Object> items = data.items;
            int count = items.size();
            for (int i = 0; i < count; ++i) {
                PagedViewWidget widget = (PagedViewWidget) layout.getChildAt(i);
                if (widget != null) {
                    Bitmap preview = data.generatedImages.get(i);
                    widget.applyPreview(new FastBitmapDrawable(preview), i);
                }
            }

            enableHwLayersOnVisiblePages();

            // Update all thread priorities
            Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
            while (iter.hasNext()) {
                AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
                int pageIndex = task.page;
                task.setThreadPriority(getThreadPriorityForPage(pageIndex));
            }
        } finally {
            data.cleanup(false);
        }
    }

    @Override
    public void syncPages() {
        //mLauncher.isAllAppInitEnable ??syncPagesEnable ????
        if (mLauncher.getModel().isFirst && mLauncher.isAllAppInitEnable && syncPagesEnable) {
            syncPagesEnable = false;
            disablePagedViewAnimations();
            removeAllViews();
            cancelAllTasks();

            Context context = getContext();
            if (mContentType == ContentType.Applications) {
                for (int i = 0; i < mNumAppsPages; ++i) {
                    AppsCustomizeCellLayout layout = new AppsCustomizeCellLayout(context);
                    setupPage(layout);
                    addView(layout,
                            new PagedView.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
                    ContentValues values = new ContentValues();
                    values.put(LauncherSettings.AllAppScreens._ID, i);
                    values.put(LauncherSettings.AllAppScreens.SCREEN_RANK, i);
                    mLauncher.getModel().insertNewAllAppScreens(getContext(), values);
                }
            } else if (mContentType == ContentType.Widgets) {
                for (int j = 0; j < mNumWidgetPages; ++j) {
                    PagedViewGridLayout layout = new PagedViewGridLayout(context, mWidgetCountX, mWidgetCountY);
                    setupPage(layout);
                    addView(layout,
                            new PagedView.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
                }
            } else {
                throw new RuntimeException("Invalid ContentType");
            }

            enablePagedViewAnimations();
        }
    }

    @Override
    public void syncPageItems(int page, boolean immediate) {
        if (mLauncher.getModel().isFirst && mLauncher.isAllAppInitEnable) {
            if (tempScreens.indexOf(page) > -1) {
                return;
            }
            tempScreens.add(page);
            if (mContentType == ContentType.Widgets) {
                syncWidgetPageItems(page, immediate);
            } else {
                syncAppsPageItems(page);
            }
        }
    }

    // We want our pages to be z-ordered such that the further a page is to the left, the higher
    // it is in the z-order. This is important to insure touch events are handled correctly.
    //FIXME 
    View getPageAt(int index) {
        //        return getChildAt(indexToPage(index));
        return getChildAt(index);
    }

    @Override
    protected int indexToPage(int index) {
        return getChildCount() - index - 1;
    }

    // In apps customize, we have a scrolling effect which emulates pulling cards off of a stack.
    @Override
    protected void screenScrolled(int screenCenter) {
        super.screenScrolled(screenCenter);
        enableHwLayersOnVisiblePages();
    }

    public void enableHwLayersOnVisiblePages() {
        final int screenCount = getChildCount();

        getVisiblePages(mTempVisiblePagesRange);
        int leftScreen = mTempVisiblePagesRange[0];
        int rightScreen = mTempVisiblePagesRange[1];
        int forceDrawScreen = -1;
        if (leftScreen == rightScreen) {
            // make sure we're caching at least two pages always
            if (rightScreen < screenCount - 1) {
                rightScreen++;
                forceDrawScreen = rightScreen;
            } else if (leftScreen > 0) {
                leftScreen--;
                forceDrawScreen = leftScreen;
            }
        } else {
            forceDrawScreen = leftScreen + 1;
        }

        for (int i = 0; i < screenCount; i++) {
            final View layout = (View) getPageAt(i);
            if (!(leftScreen <= i && i <= rightScreen && (i == forceDrawScreen || shouldDrawChild(layout)))) {
                layout.setLayerType(LAYER_TYPE_NONE, null);
            }
        }

        for (int i = 0; i < screenCount; i++) {
            final View layout = (View) getPageAt(i);

            if (leftScreen <= i && i <= rightScreen && (i == forceDrawScreen || shouldDrawChild(layout))) {
                if (layout.getLayerType() != LAYER_TYPE_HARDWARE) {
                    layout.setLayerType(LAYER_TYPE_HARDWARE, null);
                }
            }
        }
    }

    protected void overScroll(float amount) {
        dampedOverScroll(amount);
    }

    /**
     * Used by the parent to get the content width to set the tab bar to
     * @return
     */
    public int getPageContentWidth() {
        return mContentWidth;
    }

    @Override
    protected void onPageEndMoving() {
        super.onPageEndMoving();
        mForceDrawAllChildrenNextFrame = true;
        // We reset the save index when we change pages so that it will be recalculated on next
        // rotation
        mSaveInstanceStateItemIndex = -1;

        if (mDelayedResizeRunnable != null) {
            mDelayedResizeRunnable.run();
            mDelayedResizeRunnable = null;
        }
    }

    /*
     * AllAppsView implementation
     */
    public void setup(Launcher launcher, DragController dragController) {
        mLauncher = launcher;
        mDragController = dragController;
    }

    /**
     * We should call thise method whenever the core data changes (mApps, mWidgets) so that we can
     * appropriately determine when to invalidate the PagedView page data.  In cases where the data
     * has yet to be set, we can requestLayout() and wait for onDataReady() to be called in the
     * next onMeasure() pass, which will trigger an invalidatePageData() itself.
     */
    private void invalidateOnDataChange() {
        if (!isDataReady()) {
            // The next layout pass will trigger data-ready if both widgets and apps are set, so
            // request a layout to trigger the page data when ready.
            requestLayout();
        } else {
            cancelAllTasks();
            invalidatePageData();
        }
    }

    public void setApps(ArrayList<ItemInfo> list) {
        if (!LauncherAppState.isDisableAllApps()) {
            mApps = list;
            Collections.sort(mApps, LauncherModel.getAppNameComparator());
            updatePageCountsAndInvalidateData();
        }
    }

    private void addAppsWithoutInvalidate(ArrayList<AppInfo> list) {
        // We add it in place, in alphabetical order
        int count = list.size();
        for (int i = 0; i < count; ++i) {
            AppInfo info = list.get(i);
            int index = Collections.binarySearch(mApps, info, LauncherModel.getAppNameComparator());
            if (index < 0) {
                mApps.add(-(index + 1), info);
            }
        }
    }

    public void addApps(ArrayList<AppInfo> list) {
        if (!LauncherAppState.isDisableAllApps()) {
            addAppsWithoutInvalidate(list);
            updatePageCountsAndInvalidateData();
        }
    }

    private int findAppByComponent(List<ItemInfo> list, AppInfo item) {
        ComponentName removeComponent = item.intent.getComponent();
        int length = list.size();
        for (int i = 0; i < length; ++i) {
            ItemInfo itemInfo = list.get(i);
            if (itemInfo instanceof AppInfo) {
                AppInfo info = (AppInfo) itemInfo;
                if (info.user.equals(item.user) && info.intent.getComponent().equals(removeComponent)) {
                    return i;
                }
            }
        }
        return -1;
    }

    private void removeAppsWithoutInvalidate(ArrayList<AppInfo> list) {
        // loop through all the apps and remove apps that have the same component
        int length = list.size();
        for (int i = 0; i < length; ++i) {
            AppInfo info = list.get(i);
            int removeIndex = findAppByComponent(mApps, info);
            if (removeIndex > -1) {
                mApps.remove(removeIndex);
            }
        }
    }

    public void removeApps(ArrayList<AppInfo> appInfos) {
        if (!LauncherAppState.isDisableAllApps()) {
            removeAppsWithoutInvalidate(appInfos);
            updatePageCountsAndInvalidateData();
        }
    }

    public void updateApps(ArrayList<AppInfo> list) {
        // We remove and re-add the updated applications list because it's properties may have
        // changed (ie. the title), and this will ensure that the items will be in their proper
        // place in the list.
        if (!LauncherAppState.isDisableAllApps()) {
            removeAppsWithoutInvalidate(list);
            addAppsWithoutInvalidate(list);
            updatePageCountsAndInvalidateData();
        }
    }

    public void reset() {
        // If we have reset, then we should not continue to restore the previous state
        mSaveInstanceStateItemIndex = -1;

        if (mContentType != ContentType.Applications) {
            setContentType(ContentType.Applications);
        }

        if (mCurrentPage != 0) {
            invalidatePageData(0);
        }
    }

    private AppsCustomizeTabHost getTabHost() {
        return (AppsCustomizeTabHost) mLauncher.findViewById(R.id.apps_customize_pane);
    }

    public void dumpState() {
        // TODO: Dump information related to current list of Applications, Widgets, etc.
        //        AppInfo.dumpApplicationInfoList(TAG, "mApps", mApps);
        //        dumpAppWidgetProviderInfoList(TAG, "mWidgets", mWidgets);
    }

    private void dumpAppWidgetProviderInfoList(String tag, String label, ArrayList<Object> list) {
        Log.d(tag, label + " size=" + list.size());
        for (Object i : list) {
            if (i instanceof AppWidgetProviderInfo) {
                AppWidgetProviderInfo info = (AppWidgetProviderInfo) i;
                Log.d(tag, "   label=\"" + info.label + "\" previewImage=" + info.previewImage + " resizeMode="
                        + info.resizeMode + " configure=" + info.configure + " initialLayout=" + info.initialLayout
                        + " minWidth=" + info.minWidth + " minHeight=" + info.minHeight);
            } else if (i instanceof ResolveInfo) {
                ResolveInfo info = (ResolveInfo) i;
                Log.d(tag, "   label=\"" + info.loadLabel(mPackageManager) + "\" icon=" + info.icon);
            }
        }
    }

    public void surrender() {
        // TODO: If we are in the middle of any process (ie. for holographic outlines, etc) we
        // should stop this now.

        // Stop all background tasks
        cancelAllTasks();
    }

    /*
     * We load an extra page on each side to prevent flashes from scrolling and loading of the
     * widget previews in the background with the AsyncTasks.
     */
    final static int sLookBehindPageCount = 2;
    final static int sLookAheadPageCount = 2;

    protected int getAssociatedLowerPageBound(int page) {
        final int count = getChildCount();
        int windowSize = Math.min(count, sLookBehindPageCount + sLookAheadPageCount + 1);
        int windowMinIndex = Math.max(Math.min(page - sLookBehindPageCount, count - windowSize), 0);
        return windowMinIndex;
    }

    protected int getAssociatedUpperPageBound(int page) {
        final int count = getChildCount();
        int windowSize = Math.min(count, sLookBehindPageCount + sLookAheadPageCount + 1);
        int windowMaxIndex = Math.min(Math.max(page + sLookAheadPageCount, windowSize - 1), count - 1);
        return windowMaxIndex;
    }

    protected String getCurrentPageDescription() {
        int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage;
        int stringId = R.string.default_scroll_format;
        int count = 0;

        if (mContentType == ContentType.Applications) {
            stringId = R.string.apps_customize_apps_scroll_format;
            count = mNumAppsPages;
        } else if (mContentType == ContentType.Widgets) {
            stringId = R.string.apps_customize_widgets_scroll_format;
            count = mNumWidgetPages;
        } else {
            throw new RuntimeException("Invalid ContentType");
        }

        return String.format(getContext().getString(stringId), page + 1, count);
    }

    //DropTarget
    private Bitmap mDragOutline = null;
    private final int[] mTempXY = new int[2];
    private ShortcutAndWidgetContainer mDragSourceInternal;
    private boolean mCreateUserFolderOnDrop = false;
    private boolean mAddToExistingFolderOnDrop = false;
    private float[] mDragViewVisualCenter = new float[2];
    private Matrix mTempInverseMatrix = new Matrix();
    private float[] mTempCellLayoutCenterCoordinates = new float[2];
    private final DragUtils mDragUtils;
    /**
     * 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;
    /**
     * Target drop area calculated during last acceptDrop call.
     */
    private int[] mTargetCell = new int[2];
    private int mDragOverX = -1;
    private int mDragOverY = -1;

    /**
     * CellInfo for the cell that is currently being dragged
     */
    private CellLayout.CellInfo mDragInfo;
    private State mState = State.NORMAL;
    private DropTarget.DragEnforcer mDragEnforcer;
    /** Is the user is dragging an item near the edge of a page? */
    private boolean mInScrollArea = false;

    private HashMap<Long, AppsCustomizeCellLayout> mAllAppsScreens = new HashMap<Long, AppsCustomizeCellLayout>();
    private ArrayList<Long> mScreenOrder = new ArrayList<Long>();

    @Override
    public boolean isDropEnabled() {
        return true;
    }

    /**
     * ???????
     * ?????
     * ??????
     * ????
     * ?dragView
     * @param dragObject
     */
    @Override
    public void onDrop(final DragObject dragObject) {
        System.out.println("AppsCustomizePagedView onDrop");
        mDragViewVisualCenter = mDragUtils.getDragViewVisualCenter(dragObject.x, dragObject.y, dragObject.xOffset,
                dragObject.yOffset, dragObject.dragView, mDragViewVisualCenter, getResources());

        CellLayout dropTargetLayout = mDropToLayout;

        // We want the point to be mapped to the dragTarget.
        if (dropTargetLayout != null) {
            if (mLauncher.isHotseatLayout(dropTargetLayout)) {
                mDragUtils.mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
            } else {
                mDragUtils.mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null);
            }
        }

        int snapScreen = -1;
        boolean resizeOnDrop = false;
        if (dragObject.dragSource != this) {
            final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1] };
            //            onDropExternal(touchXY, dragObject.dragInfo, dropTargetLayout, false, dragObject);
        } else if (mDragInfo != null) {
            final View cell = mDragInfo.cell;

            Runnable resizeRunnable = null;
            if (dropTargetLayout != null && !dragObject.cancelled) {
                // Move internally
                boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout);
                boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout);
                long container = hasMovedIntoHotseat ? LauncherSettings.Favorites.CONTAINER_HOTSEAT
                        : LauncherSettings.Allapps.CONTAINER_ALLAPPS;
                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 = mDragUtils.findNearestArea((int) mDragViewVisualCenter[0],
                        (int) mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell);
                float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0],
                        mDragViewVisualCenter[1], mTargetCell);
                System.out.println("onDrop ?");
                // 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, dragObject.dragView, null)) {
                    return;
                }
                System.out.println("onDrop ?");
                if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, distance, dragObject,
                        false)) {
                    return;
                }
                System.out.println("onDrop ?");
                // 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) dragObject.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);
                }
                System.out.println("onDrop foundCell:" + foundCell);
                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;
                                    }
                                }
                            });
                        }
                    }
                    System.out.println("onDrop ?");
                    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 (dragObject.dragView.hasDrawn()) {
                final ItemInfo info = (ItemInfo) cell.getTag();
                if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) {
                    int animationType = resizeOnDrop ? Workspace.ANIMATE_INTO_POSITION_AND_RESIZE
                            : Workspace.ANIMATE_INTO_POSITION_AND_DISAPPEAR;
                    animateWidgetDrop(info, parent, dragObject.dragView, onCompleteRunnable, animationType, cell,
                            false);
                } else {
                    int duration = snapScreen < 0 ? -1 : 300;
                    mLauncher.getDragLayer().animateViewIntoPosition(dragObject.dragView, cell, duration,
                            onCompleteRunnable, this);
                }
            } else {
                dragObject.deferDragViewCleanupPostAnimation = false;
                cell.setVisibility(VISIBLE);
            }
            parent.onDropChild(cell);
        }
    }

    @Override
    public void onDragEnter(DragObject dragObject) {
        mDragEnforcer.onDragEnter();
        mCreateUserFolderOnDrop = false;
        mAddToExistingFolderOnDrop = false;
        mDropToLayout = null;
        CellLayout layout = getCurrentDropLayout();
        setCurrentDropLayout(layout);
        setCurrentDragOverlappingLayout(layout);

        if (!workspaceInModalState()) {
            mLauncher.getDragLayer().showPageHints();
        }
    }

    @Override
    public void onDragOver(DragObject d) {
        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 = mDragUtils.getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView,
                mDragViewVisualCenter, getResources());

        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 (mDragUtils.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 (mDragUtils.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)) {
                mDragUtils.mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
            } else {
                mDragUtils.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 = mDragUtils.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 ((mDragUtils.mDragMode == DragUtils.DRAG_MODE_NONE
                    || mDragUtils.mDragMode == DragUtils.DRAG_MODE_REORDER)
                    && !mDragUtils.mReorderAlarm.alarmPending()
                    && (mDragUtils.mLastReorderX != reorderX || mDragUtils.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);
                mDragUtils.mReorderAlarm.setOnAlarmListener(listener);
                mDragUtils.mReorderAlarm.setAlarm(Workspace.REORDER_TIMEOUT);
            }

            if (mDragUtils.mDragMode == DragUtils.DRAG_MODE_CREATE_FOLDER
                    || mDragUtils.mDragMode == DragUtils.DRAG_MODE_ADD_TO_FOLDER || !nearestDropOccupied) {
                if (mDragTargetLayout != null) {
                    mDragTargetLayout.revertTempState();
                }
            }
        }
    }

    @Override
    public void onDragExit(DragObject dragObject) {
        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 (mDragUtils.mDragMode == DragUtils.DRAG_MODE_CREATE_FOLDER) {
            mCreateUserFolderOnDrop = true;
        } else if (mDragUtils.mDragMode == DragUtils.DRAG_MODE_ADD_TO_FOLDER) {
            mAddToExistingFolderOnDrop = true;
        }

        // Reset the scroll area and previous drag target
        onResetScrollArea();
        setCurrentDropLayout(null);
        setCurrentDragOverlappingLayout(null);

        //        mSpringLoadedDragController.cancel();
        if (!mIsPageMoving) {
            //FIXME
            System.out.println("AppsCustomizePagedView !mIsPageMoving is true hideOutlines");
            //            hideOutlines();
        }
        mLauncher.getDragLayer().hidePageHints();
    }

    @Override
    public void onFlingToDelete(DragObject dragObject, int x, int y, PointF vec) {
        System.out.println("AppsCustomizePagedView onFlingToDelete");
    }

    @Override
    public boolean acceptDrop(DragObject dragObject) {
        // If it's an external drop (e.g. from All Apps), check if it should be accepted
        CellLayout dropTargetLayout = mDropToLayout;
        if (dragObject.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 = mDragUtils.getDragViewVisualCenter(dragObject.x, dragObject.y,
                    dragObject.xOffset, dragObject.yOffset, dragObject.dragView, mDragViewVisualCenter,
                    getResources());

            // We want the point to be mapped to the dragTarget.
            if (mLauncher.isHotseatLayout(dropTargetLayout)) {
                mDragUtils.mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
            } else {
                mDragUtils.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) dragObject.dragInfo;
                spanX = dragInfo.spanX;
                spanY = dragInfo.spanY;
            }

            int minSpanX = spanX;
            int minSpanY = spanY;
            if (dragObject.dragInfo instanceof PendingAddWidgetInfo) {
                minSpanX = ((PendingAddWidgetInfo) dragObject.dragInfo).minSpanX;
                minSpanY = ((PendingAddWidgetInfo) dragObject.dragInfo).minSpanY;
            }

            mTargetCell = mDragUtils.findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1],
                    minSpanX, minSpanY, dropTargetLayout, mTargetCell);
            float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0],
                    mDragViewVisualCenter[1], mTargetCell);
            if (mCreateUserFolderOnDrop && willCreateUserFolder((ItemInfo) dragObject.dragInfo, dropTargetLayout,
                    mTargetCell, distance, true)) {
                return true;
            }

            if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder((ItemInfo) dragObject.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;
            }
        }
        //FIXME AllApps????
        //        long screenId = getIdForScreen(dropTargetLayout);
        //        if (screenId == Workspace.EXTRA_EMPTY_SCREEN_ID) {
        //            commitExtraEmptyScreen();
        //        }

        return true;
    }

    @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.
        //FIXME
        //thisoutRect???
        mLauncher.getDragLayer().getDescendantRectRelativeToSelf(mLauncher.getWorkspace(), outRect);
    }

    @Override
    public void getLocationInDragLayer(int[] loc) {
        mLauncher.getDragLayer().getLocationInDragLayer(this, loc);
    }
    //DropTarget?

    //DragController.DragListener
    @Override
    public void onDragStart(DragSource source, Object info, int dragAction) {
        mDragUtils.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 (mDragUtils.mIsDragOccuring) {
                    //FIXME ?
                    //                    mDeferRemoveExtraEmptyScreen = false;
                    //                    addExtraEmptyScreenOnDrag();
                }
            }
        });
    }

    @Override
    public void onDragEnd() {
        //FIXME ?
        //        if (!mDeferRemoveExtraEmptyScreen) {
        //            removeExtraEmptyScreen(true, mDragSourceInternal != null);
        //        }

        mDragUtils.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();
        mLauncher.getAllAppsButton().setIsEnable(false);
    }

    //DragScroller
    @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 && mDragUtils.getOpenFolder() == null) {
        if (!workspaceInModalState() && mDragUtils.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
                //FIXME
                //                if (getScreenIdForPageIndex(page) == Workspace.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;
    }

    void setCurrentDropLayout(CellLayout layout) {
        if (mDragTargetLayout != null) {
            mDragTargetLayout.revertTempState();
            mDragTargetLayout.onDragExit();
        }
        mDragTargetLayout = layout;
        if (mDragTargetLayout != null) {
            mDragTargetLayout.onDragEnter();
        }
        mDragUtils.cleanupReorder(true);
        mDragUtils.cleanupFolderCreation();
        setCurrentDropOverCell(-1, -1);
    }

    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);
        mLauncher.setDragController(false);
        beginDragShared(child, this);
    }

    public void beginDragShared(View child, DragSource source) {
        //
        child.clearFocus();
        //??false?false?
        child.setPressed(false);

        //???????
        // The outline is used to visualize where the item will land if dropped
        mDragOutline = createDragOutline(child, Workspace.DRAG_BITMAP_PADDING);

        //        mLauncher.onDragStarted(child);
        // The drag bitmap follows the touch point around on the screen
        AtomicInteger padding = new AtomicInteger(Workspace.DRAG_BITMAP_PADDING);
        final Bitmap b = Utils.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();
    }

    //    private HolographicOutlineHelper mOutlineHelper;
    /**
     * 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);

        Canvas mCanvas = new Canvas();
        mCanvas.setBitmap(b);
        Utils.drawDragView(v, mCanvas, padding);
        //        mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor);
        mCanvas.setBitmap(null);
        return b;
    }

    void setCurrentDragOverlappingLayout(CellLayout layout) {
        if (mDragOverlappingLayout != null) {
            mDragOverlappingLayout.setIsDragOverlapping(false);
        }
        mDragOverlappingLayout = layout;
        if (mDragOverlappingLayout != null) {
            mDragOverlappingLayout.setIsDragOverlapping(true);
        }
        invalidate();
    }

    /*
     *
     * 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) == Workspace.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);
            mDragUtils.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;
                mDragUtils.mapPointFromChildToSelf(cl, cellLayoutCenter);

                touchXy[0] = originX;
                touchXy[1] = originY;

                // Calculate the distance between the center of the CellLayout
                // and the touch point
                float dist = mDragUtils.squaredDistance(touchXy, cellLayoutCenter);

                if (dist < smallestDistSoFar) {
                    smallestDistSoFar = dist;
                    bestMatchingScreen = cl;
                }
            }
        }
        return bestMatchingScreen;
    }

    /**
     * Return the current {@link CellLayout}, correctly picking the destination
     * screen while a scroll is in progress.
     */
    public CellLayout getCurrentDropLayout() {
        return (CellLayout) getChildAt(getNextPage());
    }

    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);
    }

    private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, int[] targetCell, float distance,
            View dragOverView) {
        boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, false);
        if (mDragUtils.mDragMode == DragUtils.DRAG_MODE_NONE && userFolderPending
                && !mDragUtils.mFolderCreationAlarm.alarmPending()) {
            mDragUtils.mFolderCreationAlarm
                    .setOnAlarmListener(mDragUtils.getNewFCAL(targetLayout, targetCell[0], targetCell[1]));
            mDragUtils.mFolderCreationAlarm.setAlarm(Workspace.FOLDER_CREATION_TIMEOUT);
            return;
        }

        boolean willAddToFolder = willAddToExistingUserFolder(info, targetLayout, targetCell, distance);

        if (willAddToFolder && mDragUtils.mDragMode == DragUtils.DRAG_MODE_NONE) {
            mDragUtils.mDragOverFolderIcon = ((FolderIcon) dragOverView);
            mDragUtils.mDragOverFolderIcon.onDragEnter(info);
            if (targetLayout != null) {
                targetLayout.clearDragOutlines();
            }
            mDragUtils.setDragMode(DragUtils.DRAG_MODE_ADD_TO_FOLDER);
            return;
        }

        if (mDragUtils.mDragMode == DragUtils.DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) {
            mDragUtils.setDragMode(DragUtils.DRAG_MODE_NONE);
        }
        if (mDragUtils.mDragMode == DragUtils.DRAG_MODE_CREATE_FOLDER && !userFolderPending) {
            mDragUtils.setDragMode(DragUtils.DRAG_MODE_NONE);
        }

        return;
    }

    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;
        }

        Object tag = dropOverView.getTag();
        boolean aboveShortcut = (tag instanceof ShortcutInfo);
        boolean willBecomeShortcut = (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION
                || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT);
        boolean aboveApplication = (tag instanceof AppInfo);
        return ((aboveShortcut || aboveApplication) && 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;
    }

    void setCurrentDropOverCell(int x, int y) {
        if (x != mDragOverX || y != mDragOverY) {
            mDragOverX = x;
            mDragOverY = y;
            mDragUtils.setDragMode(DragUtils.DRAG_MODE_NONE);
        }
    }

    public boolean workspaceInModalState() {
        return mState != State.NORMAL;
    }

    private void setState(State state) {
        mState = state;
        updateInteractionForState();
        updateAccessibilityFlags();
    }

    public void updateInteractionForState() {
        if (mState != State.NORMAL) {
            mLauncher.onInteractionBegin();
        } else {
            mLauncher.onInteractionEnd();
        }
    }

    private void updateAccessibilityFlags() {
        int accessible = mState == State.NORMAL ? ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES
                : ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
        setImportantForAccessibility(accessible);
    }

    private boolean transitionStateShouldAllowDrop() {
        //isSwitchingState() ????Menu
        //        return ((!isSwitchingState() || mTransitionProgress > 0.5f) &&
        //                (mState == State.NORMAL || mState == State.SPRING_LOADED));
        return ((mTransitionProgress > 0.5f) && (mState == State.NORMAL || mState == State.SPRING_LOADED));
    }

    private void onResetScrollArea() {
        setCurrentDragOverlappingLayout(null);
        mInScrollArea = false;
    }

    private void setChildrenBackgroundAlphaMultipliers(float a) {
        for (int i = 0; i < getChildCount(); i++) {
            CellLayout child = (CellLayout) getChildAt(i);
            child.setBackgroundAlphaMultiplier(a);
        }
    }

    /**
     * Returns a specific CellLayout
     */
    public 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.
     */
    private 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;
    }

    public long getIdForScreen(CellLayout layout) {
        Iterator<Long> iter = mAllAppsScreens.keySet().iterator();
        while (iter.hasNext()) {
            long id = iter.next();
            if (mAllAppsScreens.get(id) == layout) {
                return id;
            }
        }
        return -1;
    }

    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 AppInfo);
        boolean willBecomeShortcut = (newView.getTag() instanceof AppInfo);
        if (aboveShortcut && willBecomeShortcut) {
            AppInfo sourceInfo = (AppInfo) newView.getTag();
            AppInfo destInfo = (AppInfo) 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.addAllAppFolder(target, container, screenId, targetCell[0], targetCell[1],
                    sourceInfo.rank);
            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 long getScreenIdForPageIndex(int index) {
        if (0 <= index && index < mScreenOrder.size()) {
            return mScreenOrder.get(index);
        }
        return -1;
    }

    public int getPageIndexForScreenId(long screenId) {
        return indexOfChild(mAllAppsScreens.get(screenId));
    }

    // 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.Allapps.CONTAINER_ALLAPPS) {
            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 == Workspace.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.getAllAppsViewIdForItem(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?
            System.out.println("Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout");
            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);
        }
    }

    private void updateChildrenLayersEnabled(boolean force) {
        //FIXME
        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);
                }
            }
        }
    }

    public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView,
            final Runnable onCompleteRunnable, int animationType, final View finalView, boolean external) {
        System.out.println("appsCustomizePagedView animateWidgetDrop");
        //        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 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 (!mAllAppsScreens.containsKey(Workspace.EXTRA_EMPTY_SCREEN_ID)) {
            insertNewAllAppsScreen(Workspace.EXTRA_EMPTY_SCREEN_ID);
        }
    }

    public boolean addExtraEmptyScreen() {
        // Log to disk
        Launcher.addDumpLog(TAG, "11683562 - addExtraEmptyScreen()", true);

        if (!mAllAppsScreens.containsKey(Workspace.EXTRA_EMPTY_SCREEN_ID)) {
            insertNewAllAppsScreen(Workspace.EXTRA_EMPTY_SCREEN_ID);
            return true;
        }
        return false;
    }

    public long insertNewAllAppsScreenBeforeEmptyScreen(long screenId) {
        // Find the index to insert this view into.  If the empty screen exists, then
        // insert it before that.
        int insertIndex = mScreenOrder.indexOf(Workspace.EXTRA_EMPTY_SCREEN_ID);
        if (insertIndex < 0) {
            insertIndex = mScreenOrder.size();
        }
        return insertNewAllAppsScreen(screenId, insertIndex);
    }

    public long insertNewAllAppsScreen(long screenId) {
        return insertNewAllAppsScreen(screenId, getChildCount());
    }

    public long insertNewAllAppsScreen(long screenId, int insertIndex) {
        // Log to disk
        Launcher.addDumpLog(TAG, "11683562 - insertNewWorkspaceScreen(): " + screenId + " at index: " + insertIndex,
                true);

        if (mAllAppsScreens.containsKey(screenId)) {
            throw new RuntimeException("Screen id " + screenId + " already exists!");
        }

        AppsCustomizeCellLayout layout = new AppsCustomizeCellLayout(getContext());
        setupPage(layout);
        mAllAppsScreens.put(screenId, layout);
        mScreenOrder.add(insertIndex, screenId);
        addView(layout, insertIndex,
                new PagedView.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
        return screenId;
    }

    // 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 screenId, int x, int y, ItemInfo itemInfo,
            AppsCustomizeCellLayout layout) {

        if (screenId == Workspace.EXTRA_EMPTY_SCREEN_ID) {
            // This should never happen
            throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID");
        }

        int childId = mLauncher.getViewIdForItem(itemInfo);
        boolean markCellsAsOccupied = !(child instanceof Folder);
        layout.addViewToCellLayout(child, -1, childId, new CellLayout.LayoutParams(x, y, 1, 1),
                markCellsAsOccupied);

    }

    public AppsCustomizeCellLayout getScreenWithId(long screenId) {
        AppsCustomizeCellLayout layout = mAllAppsScreens.get(screenId);
        return layout;
    }

    /**
     * remove AppsCustomizeCellLayoutView
     */
    public void removeAllViews() {
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            AppsCustomizeCellLayout layout = (AppsCustomizeCellLayout) getPageAt(i);
            layout.removeAllViewsOnPage();
        }
    }

    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 = mDragUtils.findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1],
                    minSpanX, minSpanY, mDragTargetLayout, mTargetCell);
            mDragUtils.mLastReorderX = mTargetCell[0];
            mDragUtils.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 {
                mDragUtils.setDragMode(mDragUtils.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());
        }
    }

}