src/com/android/launcher3/widget/WidgetCell.java - platform/packages/apps/Launcher3 - Git at Google

 /*
  * Copyright (C) 2015 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.launcher3.widget;

 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
 import static com.android.launcher3.Utilities.ATLEAST_S;

 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.os.CancellationSignal;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.util.Size;
 import android.view.Gravity;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnLayoutChangeListener;
 import android.view.ViewPropertyAnimator;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.FrameLayout;
 import android.widget.LinearLayout;
 import android.widget.RemoteViews;
 import android.widget.TextView;

 import androidx.annotation.Nullable;

 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.CheckLongPressHelper;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.icons.FastBitmapDrawable;
 import com.android.launcher3.icons.RoundDrawableWrapper;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.widget.util.WidgetSizes;

 /**
  * Represents the individual cell of the widget inside the widget tray. The preview is drawn
  * horizontally centered, and scaled down if needed.
  *
  * This view does not support padding. Since the image is scaled down to fit the view, padding will
  * further decrease the scaling factor. Drag-n-drop uses the view bounds for showing a smooth
  * transition from the view to drag view, so when adding padding support, DnD would need to
  * consider the appropriate scaling factor.
  */
 public class WidgetCell extends LinearLayout implements OnLayoutChangeListener {

     private static final String TAG = "WidgetCell";
     private static final boolean DEBUG = false;

     private static final int FADE_IN_DURATION_MS = 90;

     /** Widget cell width is calculated by multiplying this factor to grid cell width. */
     private static final float WIDTH_SCALE = 3f;

     /** Widget preview width is calculated by multiplying this factor to the widget cell width. */
     private static final float PREVIEW_SCALE = 0.8f;

     protected int mPreviewWidth;
     protected int mPreviewHeight;
     protected int mPresetPreviewSize;
     private int mCellSize;
     private float mPreviewScale = 1f;

     private FrameLayout mWidgetImageContainer;
     private WidgetImageView mWidgetImage;
     private TextView mWidgetName;
     private TextView mWidgetDims;
     private TextView mWidgetDescription;

     protected WidgetItem mItem;

     private WidgetPreviewLoader mWidgetPreviewLoader;

     protected CancellationSignal mActiveRequest;
     private boolean mAnimatePreview = true;

     private boolean mApplyBitmapDeferred = false;
     private Drawable mDeferredDrawable;

     protected final BaseActivity mActivity;
     private final CheckLongPressHelper mLongPressHelper;
     private final float mEnforcedCornerRadius;
     private final int mShortcutPreviewPadding;

     private RemoteViews mRemoteViewsPreview;
     private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
     private int mSourceContainer = CONTAINER_WIDGETS_TRAY;

     public WidgetCell(Context context) {
         this(context, null);
     }

     public WidgetCell(Context context, AttributeSet attrs) {
         this(context, attrs, 0);
     }

     public WidgetCell(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);

         mActivity = BaseActivity.fromContext(context);
         mLongPressHelper = new CheckLongPressHelper(this);
         mLongPressHelper.setLongPressTimeoutFactor(1);

         setContainerWidth();
         setWillNotDraw(false);
         setClipToPadding(false);
         setAccessibilityDelegate(mActivity.getAccessibilityDelegate());
         mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(context);
         mShortcutPreviewPadding =
                 2 * getResources().getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);
     }

     private void setContainerWidth() {
         mCellSize = (int) (mActivity.getDeviceProfile().allAppsIconSizePx * WIDTH_SCALE);
         mPresetPreviewSize = (int) (mCellSize * PREVIEW_SCALE);
         mPreviewWidth = mPreviewHeight = mPresetPreviewSize;
     }

     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();

         mWidgetImageContainer = findViewById(R.id.widget_preview_container);
         mWidgetImage = findViewById(R.id.widget_preview);
         mWidgetName = findViewById(R.id.widget_name);
         mWidgetDims = findViewById(R.id.widget_dims);
         mWidgetDescription = findViewById(R.id.widget_description);
     }

     public void setRemoteViewsPreview(RemoteViews view) {
         mRemoteViewsPreview = view;
     }

     @Nullable
     public RemoteViews getRemoteViewsPreview() {
         return mRemoteViewsPreview;
     }

     /**
      * Called to clear the view and free attached resources. (e.g., {@link Bitmap}
      */
     public void clear() {
         if (DEBUG) {
             Log.d(TAG, "reset called on:" + mWidgetName.getText());
         }
         mWidgetImage.animate().cancel();
         mWidgetImage.setDrawable(null);
         mWidgetImage.setVisibility(View.VISIBLE);
         mWidgetName.setText(null);
         mWidgetDims.setText(null);
         mWidgetDescription.setText(null);
         mWidgetDescription.setVisibility(GONE);
         mPreviewWidth = mPreviewHeight = mPresetPreviewSize;

         if (mActiveRequest != null) {
             mActiveRequest.cancel();
             mActiveRequest = null;
         }
         mRemoteViewsPreview = null;
         if (mAppWidgetHostViewPreview != null) {
             mWidgetImageContainer.removeView(mAppWidgetHostViewPreview);
         }
         mAppWidgetHostViewPreview = null;
         mItem = null;
     }

     public void setSourceContainer(int sourceContainer) {
         this.mSourceContainer = sourceContainer;
     }

     public void applyFromCellItem(WidgetItem item, WidgetPreviewLoader loader) {
         applyPreviewOnAppWidgetHostView(item);

         Context context = getContext();
         mItem = item;
         mWidgetName.setText(mItem.label);
         mWidgetName.setContentDescription(
                 context.getString(R.string.widget_preview_context_description, mItem.label));
         mWidgetDims.setText(context.getString(R.string.widget_dims_format,
                 mItem.spanX, mItem.spanY));
         mWidgetDims.setContentDescription(context.getString(
                 R.string.widget_accessible_dims_format, mItem.spanX, mItem.spanY));
         if (ATLEAST_S && mItem.widgetInfo != null) {
             CharSequence description = mItem.widgetInfo.loadDescription(context);
             if (description != null && description.length() > 0) {
                 mWidgetDescription.setText(description);
                 mWidgetDescription.setVisibility(VISIBLE);
             } else {
                 mWidgetDescription.setVisibility(GONE);
             }
         }

         mWidgetPreviewLoader = loader;
         if (item.activityInfo != null) {
             setTag(new PendingAddShortcutInfo(item.activityInfo));
         } else {
             setTag(new PendingAddWidgetInfo(item.widgetInfo, mSourceContainer));
         }
     }


     private void applyPreviewOnAppWidgetHostView(WidgetItem item) {
         if (mRemoteViewsPreview != null) {
             mAppWidgetHostViewPreview = createAppWidgetHostView(getContext());
             setAppWidgetHostViewPreview(mAppWidgetHostViewPreview, item.widgetInfo,
                     mRemoteViewsPreview);
             return;
         }

         if (!item.hasPreviewLayout()) return;

         Context context = getContext();
         // If the context is a Launcher activity, DragView will show mAppWidgetHostViewPreview as
         // a preview during drag & drop. And thus, we should use LauncherAppWidgetHostView, which
         // supports applying local color extraction during drag & drop.
         mAppWidgetHostViewPreview = isLauncherContext(context)
                 ? new LauncherAppWidgetHostView(context)
                 : createAppWidgetHostView(context);
         LauncherAppWidgetProviderInfo launcherAppWidgetProviderInfo =
                 LauncherAppWidgetProviderInfo.fromProviderInfo(context, item.widgetInfo.clone());
         // A hack to force the initial layout to be the preview layout since there is no API for
         // rendering a preview layout for work profile apps yet. For non-work profile layout, a
         // proper solution is to use RemoteViews(PackageName, LayoutId).
         launcherAppWidgetProviderInfo.initialLayout = item.widgetInfo.previewLayout;
         setAppWidgetHostViewPreview(mAppWidgetHostViewPreview,
                 launcherAppWidgetProviderInfo, /* remoteViews= */ null);
     }

     private void setAppWidgetHostViewPreview(
             NavigableAppWidgetHostView appWidgetHostViewPreview,
             LauncherAppWidgetProviderInfo providerInfo,
             @Nullable RemoteViews remoteViews) {
         appWidgetHostViewPreview.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
         appWidgetHostViewPreview.setAppWidget(/* appWidgetId= */ -1, providerInfo);
         Rect padding;
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
         if (deviceProfile.shouldInsetWidgets()) {
             padding = new Rect();
             appWidgetHostViewPreview.getWidgetInset(deviceProfile, padding);
         } else {
             padding = deviceProfile.inv.defaultWidgetPadding;
         }
         appWidgetHostViewPreview.setPadding(padding.left, padding.top, padding.right,
                 padding.bottom);
         appWidgetHostViewPreview.updateAppWidget(remoteViews);
     }

     public WidgetImageView getWidgetView() {
         return mWidgetImage;
     }

     @Nullable
     public NavigableAppWidgetHostView getAppWidgetHostViewPreview() {
         return mAppWidgetHostViewPreview;
     }

     /**
      * Sets if applying bitmap preview should be deferred. The UI will still load the bitmap, but
      * will not cause invalidate, so that when deferring is disabled later, all the bitmaps are
      * ready.
      * This prevents invalidates while the animation is running.
      */
     public void setApplyBitmapDeferred(boolean isDeferred) {
         if (mApplyBitmapDeferred != isDeferred) {
             mApplyBitmapDeferred = isDeferred;
             if (!mApplyBitmapDeferred && mDeferredDrawable != null) {
                 applyPreview(mDeferredDrawable);
                 mDeferredDrawable = null;
             }
         }
     }

     public void setAnimatePreview(boolean shouldAnimate) {
         mAnimatePreview = shouldAnimate;
     }

     public void applyPreview(Bitmap bitmap) {
         FastBitmapDrawable drawable = new FastBitmapDrawable(bitmap);
         applyPreview(new RoundDrawableWrapper(drawable, mEnforcedCornerRadius));
     }

     private void applyPreview(Drawable drawable) {
         if (mApplyBitmapDeferred) {
             mDeferredDrawable = drawable;
             return;
         }
         if (drawable != null) {
             float scale = 1f;
             if (getWidth() > 0 && getHeight() > 0) {
                 // Scale down the preview size if it's wider than the cell.
                 float maxWidth = getWidth();
                 float previewWidth = drawable.getIntrinsicWidth() * mPreviewScale;
                 scale = Math.min(maxWidth / previewWidth, 1);
             }
             setContainerSize(
                     Math.round(drawable.getIntrinsicWidth() * scale),
                     Math.round(drawable.getIntrinsicHeight() * scale));
             mWidgetImage.setDrawable(drawable);
             mWidgetImage.setVisibility(View.VISIBLE);
             if (mAppWidgetHostViewPreview != null) {
                 removeView(mAppWidgetHostViewPreview);
                 mAppWidgetHostViewPreview = null;
             }
         }
         if (mAnimatePreview) {
             mWidgetImageContainer.setAlpha(0f);
             ViewPropertyAnimator anim = mWidgetImageContainer.animate();
             anim.alpha(1.0f).setDuration(FADE_IN_DURATION_MS);
         } else {
             mWidgetImageContainer.setAlpha(1f);
         }
     }

     private void setContainerSize(int width, int height) {
         LayoutParams layoutParams = (LayoutParams) mWidgetImageContainer.getLayoutParams();
         layoutParams.width = (int) (width * mPreviewScale);
         layoutParams.height = (int) (height * mPreviewScale);
         mWidgetImageContainer.setLayoutParams(layoutParams);
     }

     public void ensurePreview() {
         if (mAppWidgetHostViewPreview != null) {
             setContainerSize(mPreviewWidth, mPreviewHeight);
             FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
                     mPreviewWidth, mPreviewHeight, Gravity.FILL);
             mAppWidgetHostViewPreview.setLayoutParams(params);
             mWidgetImageContainer.addView(mAppWidgetHostViewPreview, /* index= */ 0);
             mWidgetImage.setVisibility(View.GONE);
             applyPreview((Drawable) null);
             return;
         }
         if (mActiveRequest != null) {
             return;
         }
         mActiveRequest = mWidgetPreviewLoader.loadPreview(
                 BaseActivity.fromContext(getContext()), mItem,
                 new Size(mPreviewWidth, mPreviewHeight),
                 this::applyPreview);
     }

     /** Sets the widget preview image size in number of cells. */
     public Size setPreviewSize(WidgetItem widgetItem) {
         return setPreviewSize(widgetItem, 1f);
     }

     /** Sets the widget preview image size, in number of cells, and preview scale. */
     public Size setPreviewSize(WidgetItem widgetItem, float previewScale) {
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
         Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, widgetItem);
         mPreviewWidth = widgetSize.getWidth();
         mPreviewHeight = widgetSize.getHeight();
         mPreviewScale = previewScale;
         return widgetSize;
     }

     @Override
     public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft,
             int oldTop, int oldRight, int oldBottom) {
         removeOnLayoutChangeListener(this);
         ensurePreview();
     }

     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         super.onTouchEvent(ev);
         mLongPressHelper.onTouchEvent(ev);
         return true;
     }

     @Override
     public void cancelLongPress() {
         super.cancelLongPress();
         mLongPressHelper.cancelLongPress();
     }

     /**
      * Helper method to get the string info of the tag.
      */
     private String getTagToString() {
         if (getTag() instanceof PendingAddWidgetInfo ||
                 getTag() instanceof PendingAddShortcutInfo) {
             return getTag().toString();
         }
         return "";
     }

     private static NavigableAppWidgetHostView createAppWidgetHostView(Context context) {
         return new NavigableAppWidgetHostView(context) {
             @Override
             protected boolean shouldAllowDirectClick() {
                 return false;
             }
         };
     }

     private static boolean isLauncherContext(Context context) {
         try {
             Launcher.getLauncher(context);
             return true;
         } catch (Exception e) {
             return false;
         }
     }

     @Override
     public CharSequence getAccessibilityClassName() {
         return WidgetCell.class.getName();
     }

     @Override
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
         info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_CLICK);
     }
 }
	/*
	* Copyright (C) 2015 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.launcher3.widget;

	import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_TRAY;
	import static com.android.launcher3.Utilities.ATLEAST_S;

	import android.content.Context;
	import android.graphics.Bitmap;
	import android.graphics.Rect;
	import android.graphics.drawable.Drawable;
	import android.os.CancellationSignal;
	import android.util.AttributeSet;
	import android.util.Log;
	import android.util.Size;
	import android.view.Gravity;
	import android.view.MotionEvent;
	import android.view.View;
	import android.view.View.OnLayoutChangeListener;
	import android.view.ViewPropertyAnimator;
	import android.view.accessibility.AccessibilityNodeInfo;
	import android.widget.FrameLayout;
	import android.widget.LinearLayout;
	import android.widget.RemoteViews;
	import android.widget.TextView;

	import androidx.annotation.Nullable;

	import com.android.launcher3.BaseActivity;
	import com.android.launcher3.CheckLongPressHelper;
	import com.android.launcher3.DeviceProfile;
	import com.android.launcher3.Launcher;
	import com.android.launcher3.R;
	import com.android.launcher3.icons.FastBitmapDrawable;
	import com.android.launcher3.icons.RoundDrawableWrapper;
	import com.android.launcher3.model.WidgetItem;
	import com.android.launcher3.widget.util.WidgetSizes;

	/**
	* Represents the individual cell of the widget inside the widget tray. The preview is drawn
	* horizontally centered, and scaled down if needed.
	*
	* This view does not support padding. Since the image is scaled down to fit the view, padding will
	* further decrease the scaling factor. Drag-n-drop uses the view bounds for showing a smooth
	* transition from the view to drag view, so when adding padding support, DnD would need to
	* consider the appropriate scaling factor.
	*/
	public class WidgetCell extends LinearLayout implements OnLayoutChangeListener {

	private static final String TAG = "WidgetCell";
	private static final boolean DEBUG = false;

	private static final int FADE_IN_DURATION_MS = 90;

	/** Widget cell width is calculated by multiplying this factor to grid cell width. */
	private static final float WIDTH_SCALE = 3f;

	/** Widget preview width is calculated by multiplying this factor to the widget cell width. */
	private static final float PREVIEW_SCALE = 0.8f;

	protected int mPreviewWidth;
	protected int mPreviewHeight;
	protected int mPresetPreviewSize;
	private int mCellSize;
	private float mPreviewScale = 1f;

	private FrameLayout mWidgetImageContainer;
	private WidgetImageView mWidgetImage;
	private TextView mWidgetName;
	private TextView mWidgetDims;
	private TextView mWidgetDescription;

	protected WidgetItem mItem;

	private WidgetPreviewLoader mWidgetPreviewLoader;

	protected CancellationSignal mActiveRequest;
	private boolean mAnimatePreview = true;

	private boolean mApplyBitmapDeferred = false;
	private Drawable mDeferredDrawable;

	protected final BaseActivity mActivity;
	private final CheckLongPressHelper mLongPressHelper;
	private final float mEnforcedCornerRadius;
	private final int mShortcutPreviewPadding;

	private RemoteViews mRemoteViewsPreview;
	private NavigableAppWidgetHostView mAppWidgetHostViewPreview;
	private int mSourceContainer = CONTAINER_WIDGETS_TRAY;

	public WidgetCell(Context context) {
	this(context, null);
	}

	public WidgetCell(Context context, AttributeSet attrs) {
	this(context, attrs, 0);
	}

	public WidgetCell(Context context, AttributeSet attrs, int defStyle) {
	super(context, attrs, defStyle);

	mActivity = BaseActivity.fromContext(context);
	mLongPressHelper = new CheckLongPressHelper(this);
	mLongPressHelper.setLongPressTimeoutFactor(1);

	setContainerWidth();
	setWillNotDraw(false);
	setClipToPadding(false);
	setAccessibilityDelegate(mActivity.getAccessibilityDelegate());
	mEnforcedCornerRadius = RoundedCornerEnforcement.computeEnforcedRadius(context);
	mShortcutPreviewPadding =
	2 * getResources().getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);
	}

	private void setContainerWidth() {
	mCellSize = (int) (mActivity.getDeviceProfile().allAppsIconSizePx * WIDTH_SCALE);
	mPresetPreviewSize = (int) (mCellSize * PREVIEW_SCALE);
	mPreviewWidth = mPreviewHeight = mPresetPreviewSize;
	}

	@Override
	protected void onFinishInflate() {
	super.onFinishInflate();

	mWidgetImageContainer = findViewById(R.id.widget_preview_container);
	mWidgetImage = findViewById(R.id.widget_preview);
	mWidgetName = findViewById(R.id.widget_name);
	mWidgetDims = findViewById(R.id.widget_dims);
	mWidgetDescription = findViewById(R.id.widget_description);
	}

	public void setRemoteViewsPreview(RemoteViews view) {
	mRemoteViewsPreview = view;
	}

	@Nullable
	public RemoteViews getRemoteViewsPreview() {
	return mRemoteViewsPreview;
	}

	/**
	* Called to clear the view and free attached resources. (e.g., {@link Bitmap}
	*/
	public void clear() {
	if (DEBUG) {
	Log.d(TAG, "reset called on:" + mWidgetName.getText());
	}
	mWidgetImage.animate().cancel();
	mWidgetImage.setDrawable(null);
	mWidgetImage.setVisibility(View.VISIBLE);
	mWidgetName.setText(null);
	mWidgetDims.setText(null);
	mWidgetDescription.setText(null);
	mWidgetDescription.setVisibility(GONE);
	mPreviewWidth = mPreviewHeight = mPresetPreviewSize;

	if (mActiveRequest != null) {
	mActiveRequest.cancel();
	mActiveRequest = null;
	}
	mRemoteViewsPreview = null;
	if (mAppWidgetHostViewPreview != null) {
	mWidgetImageContainer.removeView(mAppWidgetHostViewPreview);
	}
	mAppWidgetHostViewPreview = null;
	mItem = null;
	}

	public void setSourceContainer(int sourceContainer) {
	this.mSourceContainer = sourceContainer;
	}

	public void applyFromCellItem(WidgetItem item, WidgetPreviewLoader loader) {
	applyPreviewOnAppWidgetHostView(item);

	Context context = getContext();
	mItem = item;
	mWidgetName.setText(mItem.label);
	mWidgetName.setContentDescription(
	context.getString(R.string.widget_preview_context_description, mItem.label));
	mWidgetDims.setText(context.getString(R.string.widget_dims_format,
	mItem.spanX, mItem.spanY));
	mWidgetDims.setContentDescription(context.getString(
	R.string.widget_accessible_dims_format, mItem.spanX, mItem.spanY));
	if (ATLEAST_S && mItem.widgetInfo != null) {
	CharSequence description = mItem.widgetInfo.loadDescription(context);
	if (description != null && description.length() > 0) {
	mWidgetDescription.setText(description);
	mWidgetDescription.setVisibility(VISIBLE);
	} else {
	mWidgetDescription.setVisibility(GONE);
	}
	}

	mWidgetPreviewLoader = loader;
	if (item.activityInfo != null) {
	setTag(new PendingAddShortcutInfo(item.activityInfo));
	} else {
	setTag(new PendingAddWidgetInfo(item.widgetInfo, mSourceContainer));
	}
	}


	private void applyPreviewOnAppWidgetHostView(WidgetItem item) {
	if (mRemoteViewsPreview != null) {
	mAppWidgetHostViewPreview = createAppWidgetHostView(getContext());
	setAppWidgetHostViewPreview(mAppWidgetHostViewPreview, item.widgetInfo,
	mRemoteViewsPreview);
	return;
	}

	if (!item.hasPreviewLayout()) return;

	Context context = getContext();
	// If the context is a Launcher activity, DragView will show mAppWidgetHostViewPreview as
	// a preview during drag & drop. And thus, we should use LauncherAppWidgetHostView, which
	// supports applying local color extraction during drag & drop.
	mAppWidgetHostViewPreview = isLauncherContext(context)
	? new LauncherAppWidgetHostView(context)
	: createAppWidgetHostView(context);
	LauncherAppWidgetProviderInfo launcherAppWidgetProviderInfo =
	LauncherAppWidgetProviderInfo.fromProviderInfo(context, item.widgetInfo.clone());
	// A hack to force the initial layout to be the preview layout since there is no API for
	// rendering a preview layout for work profile apps yet. For non-work profile layout, a
	// proper solution is to use RemoteViews(PackageName, LayoutId).
	launcherAppWidgetProviderInfo.initialLayout = item.widgetInfo.previewLayout;
	setAppWidgetHostViewPreview(mAppWidgetHostViewPreview,
	launcherAppWidgetProviderInfo, /* remoteViews= */ null);
	}

	private void setAppWidgetHostViewPreview(
	NavigableAppWidgetHostView appWidgetHostViewPreview,
	LauncherAppWidgetProviderInfo providerInfo,
	@Nullable RemoteViews remoteViews) {
	appWidgetHostViewPreview.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
	appWidgetHostViewPreview.setAppWidget(/* appWidgetId= */ -1, providerInfo);
	Rect padding;
	DeviceProfile deviceProfile = mActivity.getDeviceProfile();
	if (deviceProfile.shouldInsetWidgets()) {
	padding = new Rect();
	appWidgetHostViewPreview.getWidgetInset(deviceProfile, padding);
	} else {
	padding = deviceProfile.inv.defaultWidgetPadding;
	}
	appWidgetHostViewPreview.setPadding(padding.left, padding.top, padding.right,
	padding.bottom);
	appWidgetHostViewPreview.updateAppWidget(remoteViews);
	}

	public WidgetImageView getWidgetView() {
	return mWidgetImage;
	}

	@Nullable
	public NavigableAppWidgetHostView getAppWidgetHostViewPreview() {
	return mAppWidgetHostViewPreview;
	}

	/**
	* Sets if applying bitmap preview should be deferred. The UI will still load the bitmap, but
	* will not cause invalidate, so that when deferring is disabled later, all the bitmaps are
	* ready.
	* This prevents invalidates while the animation is running.
	*/
	public void setApplyBitmapDeferred(boolean isDeferred) {
	if (mApplyBitmapDeferred != isDeferred) {
	mApplyBitmapDeferred = isDeferred;
	if (!mApplyBitmapDeferred && mDeferredDrawable != null) {
	applyPreview(mDeferredDrawable);
	mDeferredDrawable = null;
	}
	}
	}

	public void setAnimatePreview(boolean shouldAnimate) {
	mAnimatePreview = shouldAnimate;
	}

	public void applyPreview(Bitmap bitmap) {
	FastBitmapDrawable drawable = new FastBitmapDrawable(bitmap);
	applyPreview(new RoundDrawableWrapper(drawable, mEnforcedCornerRadius));
	}

	private void applyPreview(Drawable drawable) {
	if (mApplyBitmapDeferred) {
	mDeferredDrawable = drawable;
	return;
	}
	if (drawable != null) {
	float scale = 1f;
	if (getWidth() > 0 && getHeight() > 0) {
	// Scale down the preview size if it's wider than the cell.
	float maxWidth = getWidth();
	float previewWidth = drawable.getIntrinsicWidth() * mPreviewScale;
	scale = Math.min(maxWidth / previewWidth, 1);
	}
	setContainerSize(
	Math.round(drawable.getIntrinsicWidth() * scale),
	Math.round(drawable.getIntrinsicHeight() * scale));
	mWidgetImage.setDrawable(drawable);
	mWidgetImage.setVisibility(View.VISIBLE);
	if (mAppWidgetHostViewPreview != null) {
	removeView(mAppWidgetHostViewPreview);
	mAppWidgetHostViewPreview = null;
	}
	}
	if (mAnimatePreview) {
	mWidgetImageContainer.setAlpha(0f);
	ViewPropertyAnimator anim = mWidgetImageContainer.animate();
	anim.alpha(1.0f).setDuration(FADE_IN_DURATION_MS);
	} else {
	mWidgetImageContainer.setAlpha(1f);
	}
	}

	private void setContainerSize(int width, int height) {
	LayoutParams layoutParams = (LayoutParams) mWidgetImageContainer.getLayoutParams();
	layoutParams.width = (int) (width * mPreviewScale);
	layoutParams.height = (int) (height * mPreviewScale);
	mWidgetImageContainer.setLayoutParams(layoutParams);
	}

	public void ensurePreview() {
	if (mAppWidgetHostViewPreview != null) {
	setContainerSize(mPreviewWidth, mPreviewHeight);
	FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
	mPreviewWidth, mPreviewHeight, Gravity.FILL);
	mAppWidgetHostViewPreview.setLayoutParams(params);
	mWidgetImageContainer.addView(mAppWidgetHostViewPreview, /* index= */ 0);
	mWidgetImage.setVisibility(View.GONE);
	applyPreview((Drawable) null);
	return;
	}
	if (mActiveRequest != null) {
	return;
	}
	mActiveRequest = mWidgetPreviewLoader.loadPreview(
	BaseActivity.fromContext(getContext()), mItem,
	new Size(mPreviewWidth, mPreviewHeight),
	this::applyPreview);
	}

	/** Sets the widget preview image size in number of cells. */
	public Size setPreviewSize(WidgetItem widgetItem) {
	return setPreviewSize(widgetItem, 1f);
	}

	/** Sets the widget preview image size, in number of cells, and preview scale. */
	public Size setPreviewSize(WidgetItem widgetItem, float previewScale) {
	DeviceProfile deviceProfile = mActivity.getDeviceProfile();
	Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, widgetItem);
	mPreviewWidth = widgetSize.getWidth();
	mPreviewHeight = widgetSize.getHeight();
	mPreviewScale = previewScale;
	return widgetSize;
	}

	@Override
	public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft,
	int oldTop, int oldRight, int oldBottom) {
	removeOnLayoutChangeListener(this);
	ensurePreview();
	}

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
	super.onTouchEvent(ev);
	mLongPressHelper.onTouchEvent(ev);
	return true;
	}

	@Override
	public void cancelLongPress() {
	super.cancelLongPress();
	mLongPressHelper.cancelLongPress();
	}

	/**
	* Helper method to get the string info of the tag.
	*/
	private String getTagToString() {
	if (getTag() instanceof PendingAddWidgetInfo \|\|
	getTag() instanceof PendingAddShortcutInfo) {
	return getTag().toString();
	}
	return "";
	}

	private static NavigableAppWidgetHostView createAppWidgetHostView(Context context) {
	return new NavigableAppWidgetHostView(context) {
	@Override
	protected boolean shouldAllowDirectClick() {
	return false;
	}
	};
	}

	private static boolean isLauncherContext(Context context) {
	try {
	Launcher.getLauncher(context);
	return true;
	} catch (Exception e) {
	return false;
	}
	}

	@Override
	public CharSequence getAccessibilityClassName() {
	return WidgetCell.class.getName();
	}

	@Override
	public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
	super.onInitializeAccessibilityNodeInfo(info);
	info.removeAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_CLICK);
	}
	}