content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.launcher3.widget;
  
  import android.animation.Animator;
  import android.animation.ObjectAnimator;
  import android.animation.PropertyValuesHolder;
  import android.content.Context;
  import android.graphics.Rect;
  import android.util.AttributeSet;
  import android.util.Pair;
  import android.util.Property;
  import android.view.Gravity;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.TextView;
  
  import androidx.annotation.Nullable;
  
  import com.android.launcher3.Insettable;
  import com.android.launcher3.ItemInfo;
  import com.android.launcher3.LauncherAppState;
  import com.android.launcher3.R;
  import com.android.launcher3.ResourceUtils;
  import com.android.launcher3.anim.Interpolators;
  import com.android.launcher3.model.WidgetItem;
  import com.android.launcher3.util.PackageUserKey;
  
  import java.util.List;
  
  /**
   * Bottom sheet for the "Widgets" system shortcut in the long-press popup.
   */
  public class WidgetsBottomSheet extends BaseWidgetSheet implements Insettable {
  
      private static final Property<View, Integer> PADDING_BOTTOM =
              new Property<View, Integer>(Integer.class, "paddingBottom") {
                  @Override
                  public void set(View view, Integer paddingBottom) {
                      view.setPadding(view.getPaddingLeft(), view.getPaddingTop(),
                              view.getPaddingRight(), paddingBottom);
                  }
  
                  @Override
                  public Integer get(View view) {
                      return view.getPaddingBottom();
                  }
              };
  
      private static final int DEFAULT_CLOSE_DURATION = 200;
      private ItemInfo mOriginalItemInfo;
      private Rect mInsets;
  
      public WidgetsBottomSheet(Context context, AttributeSet attrs) {
          this(context, attrs, 0);
      }
  
      public WidgetsBottomSheet(Context context, AttributeSet attrs, int defStyleAttr) {
          super(context, attrs, defStyleAttr);
          setWillNotDraw(false);
          mInsets = new Rect();
          mContent = this;
      }
  
      @Override
      protected void onLayout(boolean changed, int l, int t, int r, int b) {
          super.onLayout(changed, l, t, r, b);
          setTranslationShift(mTranslationShift);
      }
  
      public void populateAndShow(ItemInfo itemInfo) {
          mOriginalItemInfo = itemInfo;
          ((TextView) findViewById(R.id.title)).setText(getContext().getString(
                  R.string.widgets_bottom_sheet_title, mOriginalItemInfo.title));
  
          onWidgetsBound();
          attachToContainer();
          mIsOpen = false;
          animateOpen();
      }
  
      @Override
      public void onWidgetsBound() {
          List<WidgetItem> widgets = mLauncher.getPopupDataProvider().getWidgetsForPackageUser(
                  new PackageUserKey(
                          mOriginalItemInfo.getTargetComponent().getPackageName(),
                          mOriginalItemInfo.user));
  
          ViewGroup widgetRow = findViewById(R.id.widgets);
          ViewGroup widgetCells = widgetRow.findViewById(R.id.widgets_cell_list);
  
          widgetCells.removeAllViews();
  
          for (int i = 0; i < widgets.size(); i++) {
              WidgetCell widget = addItemCell(widgetCells);
              widget.applyFromCellItem(widgets.get(i), LauncherAppState.getInstance(mLauncher)
                      .getWidgetCache());
              widget.ensurePreview();
              widget.setVisibility(View.VISIBLE);
              if (i < widgets.size() - 1) {
                  addDivider(widgetCells);
              }
          }
  
          if (widgets.size() == 1) {
              // If there is only one widget, we want to center it instead of left-align.
              WidgetsBottomSheet.LayoutParams params = (WidgetsBottomSheet.LayoutParams)
                      widgetRow.getLayoutParams();
              params.gravity = Gravity.CENTER_HORIZONTAL;
          } else {
              // Otherwise, add an empty view to the start as padding (but still scroll edge to edge).
              View leftPaddingView = LayoutInflater.from(getContext()).inflate(
                      R.layout.widget_list_divider, widgetRow, false);
              leftPaddingView.getLayoutParams().width = ResourceUtils.pxFromDp(
                      16, getResources().getDisplayMetrics());
              widgetCells.addView(leftPaddingView, 0);
          }
      }
  
      private void addDivider(ViewGroup parent) {
          LayoutInflater.from(getContext()).inflate(R.layout.widget_list_divider, parent, true);
      }
  
      protected WidgetCell addItemCell(ViewGroup parent) {
          WidgetCell widget = (WidgetCell) LayoutInflater.from(getContext()).inflate(
                  R.layout.widget_cell, parent, false);
  
          widget.setOnClickListener(this);
          widget.setOnLongClickListener(this);
          widget.setAnimatePreview(false);
  
          parent.addView(widget);
          return widget;
      }
  
      private void animateOpen() {
          if (mIsOpen || mOpenCloseAnimator.isRunning()) {
              return;
          }
          mIsOpen = true;
          setupNavBarColor();
          mOpenCloseAnimator.setValues(
                  PropertyValuesHolder.ofFloat(TRANSLATION_SHIFT, TRANSLATION_SHIFT_OPENED));
          mOpenCloseAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
          mOpenCloseAnimator.start();
      }
  
      @Override
      protected void handleClose(boolean animate) {
          handleClose(animate, DEFAULT_CLOSE_DURATION);
      }
  
      @Override
      protected boolean isOfType(@FloatingViewType int type) {
          return (type & TYPE_WIDGETS_BOTTOM_SHEET) != 0;
      }
  
      @Override
      public void setInsets(Rect insets) {
          // Extend behind left, right, and bottom insets.
          int leftInset = insets.left - mInsets.left;
          int rightInset = insets.right - mInsets.right;
          int bottomInset = insets.bottom - mInsets.bottom;
          mInsets.set(insets);
          setPadding(leftInset, getPaddingTop(), rightInset, bottomInset);
      }
  
      @Override
      protected int getElementsRowCount() {
          return 1;
      }
  
      @Override
      protected Pair<View, String> getAccessibilityTarget() {
          return Pair.create(findViewById(R.id.title),  getContext().getString(
                  mIsOpen ? R.string.widgets_list : R.string.widgets_list_closed));
      }
  
      @Nullable
      @Override
      public Animator createHintCloseAnim(float distanceToMove) {
          return ObjectAnimator.ofInt(this, PADDING_BOTTOM, (int) (distanceToMove + mInsets.bottom));
      }
  }
  