java/com/android/dialer/speeddial/SpeedDialAdapter.java - LeafOS-Project/android_packages_apps_Dialer - Gitiles

 /*
  * Copyright (C) 2018 The Android Open Source Project
  * Copyright (C) 2023 The LineageOS 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.dialer.speeddial;

 import android.content.Context;
 import android.util.ArrayMap;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
 import android.view.animation.AnticipateInterpolator;
 import android.widget.FrameLayout;

 import androidx.annotation.IntDef;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.ItemTouchHelper;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.RecyclerView.ViewHolder;

 import com.android.dialer.R;
 import com.android.dialer.common.Assert;
 import com.android.dialer.speeddial.FavoritesViewHolder.FavoriteContactsListener;
 import com.android.dialer.speeddial.HeaderViewHolder.SpeedDialHeaderListener;
 import com.android.dialer.speeddial.SpeedDialFragment.HostInterface;
 import com.android.dialer.speeddial.SuggestionViewHolder.SuggestedContactsListener;
 import com.android.dialer.speeddial.draghelper.SpeedDialItemTouchHelperCallback.ItemTouchHelperAdapter;
 import com.android.dialer.speeddial.loader.SpeedDialUiItem;
 import com.google.common.collect.ImmutableList;

 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;

 /**
  * RecyclerView adapter for {@link SpeedDialFragment}.
  *
  * <p>Displays a list in the following order:
  *
  * <ol>
  *   <li>Favorite contacts header (with add button)
  *   <li>Favorite contacts
  *   <li>Suggested contacts header
  *   <li>Suggested contacts
  * </ol>
  */
 public final class SpeedDialAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
     implements ItemTouchHelperAdapter {

   private static final int NON_CONTACT_ITEM_NUMBER_BEFORE_FAVORITES = 2;
   private static final int NON_CONTACT_ITEM_NUMBER_BEFORE_SUGGESTION = 3;

   private static final float IN_REMOVE_VIEW_SCALE = 0.5f;
   private static final float IN_REMOVE_VIEW_ALPHA = 0.5f;

   @Retention(RetentionPolicy.SOURCE)
   @IntDef({RowType.REMOVE_VIEW, RowType.STARRED_HEADER, RowType.SUGGESTION_HEADER, RowType.STARRED,
           RowType.SUGGESTION})
   @interface RowType {
     int REMOVE_VIEW = 0;
     int STARRED_HEADER = 1;
     int SUGGESTION_HEADER = 2;
     int STARRED = 3;
     int SUGGESTION = 4;
   }

   private final Context context;
   private final FavoriteContactsListener favoritesListener;
   private final SuggestedContactsListener suggestedListener;
   private final SpeedDialHeaderListener headerListener;
   private final HostInterface hostInterface;

   private final Map<Integer, Integer> positionToRowTypeMap = new ArrayMap<>();
   private List<SpeedDialUiItem> speedDialUiItems;

   // Needed for FavoriteViewHolder
   private ItemTouchHelper itemTouchHelper;

   private RemoveViewHolder removeViewHolder;
   private FavoritesViewHolder draggingFavoritesViewHolder;

   public SpeedDialAdapter(
       Context context,
       FavoriteContactsListener favoritesListener,
       SuggestedContactsListener suggestedListener,
       SpeedDialHeaderListener headerListener,
       HostInterface hostInterface) {
     this.context = context;
     this.favoritesListener = favoritesListener;
     this.suggestedListener = suggestedListener;
     this.headerListener = headerListener;
     this.hostInterface = hostInterface;
   }

   @Override
   public int getItemViewType(int position) {
     return positionToRowTypeMap.get(position);
   }

   @NonNull
   @Override
   public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
     LayoutInflater inflater = LayoutInflater.from(context);
     switch (viewType) {
       case RowType.STARRED:
         return new FavoritesViewHolder(
             inflater.inflate(R.layout.favorite_item_layout, parent, false),
             itemTouchHelper,
             favoritesListener);
       case RowType.SUGGESTION:
         return new SuggestionViewHolder(
             inflater.inflate(R.layout.suggestion_row_layout, parent, false), suggestedListener);
       case RowType.STARRED_HEADER:
       case RowType.SUGGESTION_HEADER:
         return new HeaderViewHolder(
             inflater.inflate(R.layout.speed_dial_header_layout, parent, false), headerListener);
       case RowType.REMOVE_VIEW:
         removeViewHolder =
             new RemoveViewHolder(
                 inflater.inflate(R.layout.favorite_remove_view_layout, parent, false));
         return removeViewHolder;
       default:
         throw Assert.createIllegalStateFailException("Invalid viewType: " + viewType);
     }
   }

   @Override
   public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
     switch (getItemViewType(position)) {
       case RowType.STARRED_HEADER:
         ((HeaderViewHolder) holder).setHeaderText(R.string.favorites_header);
         ((HeaderViewHolder) holder).showAddButton(true);
         return;
       case RowType.SUGGESTION_HEADER:
         ((HeaderViewHolder) holder).setHeaderText(R.string.suggestions_header);
         ((HeaderViewHolder) holder).showAddButton(false);
         return;
       case RowType.STARRED:
         ((FavoritesViewHolder) holder).bind(context, speedDialUiItems.get(position - 2));
         // Removed item might come back
         FrameLayout avatarContainer = ((FavoritesViewHolder) holder).getAvatarContainer();
         avatarContainer.setScaleX(1);
         avatarContainer.setScaleY(1);
         avatarContainer.setAlpha(1);
         break;
       case RowType.SUGGESTION:
         ((SuggestionViewHolder) holder).bind(context, speedDialUiItems.get(position - 3));
         break;
       case RowType.REMOVE_VIEW:
         break;
       default:
         throw Assert.createIllegalStateFailException("Invalid view holder: " + holder);
     }
   }

   @Override
   public int getItemCount() {
     return positionToRowTypeMap.size();
   }

   public void setSpeedDialUiItems(List<SpeedDialUiItem> immutableSpeedDialUiItems) {
     speedDialUiItems = new ArrayList<>();
     speedDialUiItems.addAll(immutableSpeedDialUiItems);
     speedDialUiItems.sort(
         (o1, o2) -> {
           if (o1.isStarred() && o2.isStarred()) {
             return Integer.compare(o1.pinnedPosition().orElse(-1), o2.pinnedPosition().orElse(-1));
           }
           return Boolean.compare(o2.isStarred(), o1.isStarred());
         });
     updatePositionToRowTypeMap();
   }

   private void updatePositionToRowTypeMap() {
     positionToRowTypeMap.clear();
     if (speedDialUiItems.isEmpty()) {
       return;
     }

     positionToRowTypeMap.put(0, RowType.REMOVE_VIEW);
     // Show the add favorites even if there are no favorite contacts
     positionToRowTypeMap.put(1, RowType.STARRED_HEADER);
     int positionOfSuggestionHeader = NON_CONTACT_ITEM_NUMBER_BEFORE_FAVORITES;
     for (int i = 0; i < speedDialUiItems.size(); i++) {
       if (speedDialUiItems.get(i).isStarred()) {
         positionToRowTypeMap.put(i + NON_CONTACT_ITEM_NUMBER_BEFORE_FAVORITES, RowType.STARRED);
         positionOfSuggestionHeader++;
       } else {
         positionToRowTypeMap.put(i + NON_CONTACT_ITEM_NUMBER_BEFORE_SUGGESTION, RowType.SUGGESTION);
       }
     }
     if (!speedDialUiItems.get(speedDialUiItems.size() - 1).isStarred()) {
       positionToRowTypeMap.put(positionOfSuggestionHeader, RowType.SUGGESTION_HEADER);
     }
   }

   public ImmutableList<SpeedDialUiItem> getSpeedDialUiItems() {
     if (speedDialUiItems == null || speedDialUiItems.isEmpty()) {
       return ImmutableList.of();
     }
     return ImmutableList.copyOf(speedDialUiItems);
   }

   public GridLayoutManager.SpanSizeLookup getSpanSizeLookup() {
     return new GridLayoutManager.SpanSizeLookup() {
       @Override
       public int getSpanSize(int position) {
         switch (getItemViewType(position)) {
           case RowType.SUGGESTION:
           case RowType.STARRED_HEADER:
           case RowType.SUGGESTION_HEADER:
           case RowType.REMOVE_VIEW:
             return 3; // span the whole screen
           case RowType.STARRED:
             return 1; // span 1/3 of the screen
           default:
             throw Assert.createIllegalStateFailException(
                 "Invalid row type: " + positionToRowTypeMap.get(position));
         }
       }
     };
   }

   @Override
   public void onItemMove(int fromPosition, int toPosition) {
     if (toPosition == 0) {
       // drop to removeView
       return;
     }
     // fromPosition/toPosition correspond to adapter position, which is off by 1 from the list
     // position b/c of the favorites header. So subtract 1 here.
     speedDialUiItems.add(toPosition - 2, speedDialUiItems.remove(fromPosition - 2));
     notifyItemMoved(fromPosition, toPosition);
   }

   @Override
   public boolean canDropOver(ViewHolder target) {
     return target instanceof FavoritesViewHolder || target instanceof RemoveViewHolder;
   }

   @Override
   public void onSelectedChanged(@Nullable ViewHolder viewHolder, int actionState) {
     switch (actionState) {
       case ItemTouchHelper.ACTION_STATE_DRAG:
         if (viewHolder != null) {
           draggingFavoritesViewHolder = (FavoritesViewHolder) viewHolder;
           draggingFavoritesViewHolder.onSelectedChanged(true);
           hostInterface.dragFavorite(true);
           removeViewHolder.show();
         }
         break;
       case ItemTouchHelper.ACTION_STATE_IDLE:
         // viewHolder is null in this case
         if (draggingFavoritesViewHolder != null) {
           draggingFavoritesViewHolder.onSelectedChanged(false);
           draggingFavoritesViewHolder = null;
           hostInterface.dragFavorite(false);
           removeViewHolder.hide();
         }
         break;
       default:
         break;
     }
   }

   @Override
   public void enterRemoveView() {
     if (draggingFavoritesViewHolder != null) {
       draggingFavoritesViewHolder
           .getAvatarContainer()
           .animate()
           .scaleX(IN_REMOVE_VIEW_SCALE)
           .scaleY(IN_REMOVE_VIEW_SCALE)
           .alpha(IN_REMOVE_VIEW_ALPHA)
           .start();
     }
   }

   @Override
   public void leaveRemoveView() {
     if (draggingFavoritesViewHolder != null) {
       draggingFavoritesViewHolder
           .getAvatarContainer()
           .animate()
           .scaleX(1)
           .scaleY(1)
           .alpha(1)
           .start();
     }
   }

   @Override
   public void dropOnRemoveView(ViewHolder fromViewHolder) {
     if (!(fromViewHolder instanceof FavoritesViewHolder)) {
       return;
     }
     int fromPosition = fromViewHolder.getAdapterPosition();

     SpeedDialUiItem removedItem = speedDialUiItems.remove(fromPosition - 2);
     favoritesListener.onRequestRemove(removedItem);
     ((FavoritesViewHolder) fromViewHolder)
         .getAvatarContainer()
         .animate()
         .scaleX(0)
         .scaleY(0)
         .alpha(0)
         .setInterpolator(new AnticipateInterpolator())
         .start();
     updatePositionToRowTypeMap();
   }

   public void setItemTouchHelper(ItemTouchHelper itemTouchHelper) {
     this.itemTouchHelper = itemTouchHelper;
   }

   /** Returns true if there are suggested contacts. */
   public boolean hasFrequents() {
     return !speedDialUiItems.isEmpty() && getItemViewType(getItemCount() - 1) == RowType.SUGGESTION;
   }
 }
	/*
	* Copyright (C) 2018 The Android Open Source Project
	* Copyright (C) 2023 The LineageOS 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.dialer.speeddial;

	import android.content.Context;
	import android.util.ArrayMap;
	import android.view.LayoutInflater;
	import android.view.ViewGroup;
	import android.view.animation.AnticipateInterpolator;
	import android.widget.FrameLayout;

	import androidx.annotation.IntDef;
	import androidx.annotation.NonNull;
	import androidx.annotation.Nullable;
	import androidx.recyclerview.widget.GridLayoutManager;
	import androidx.recyclerview.widget.ItemTouchHelper;
	import androidx.recyclerview.widget.RecyclerView;
	import androidx.recyclerview.widget.RecyclerView.ViewHolder;

	import com.android.dialer.R;
	import com.android.dialer.common.Assert;
	import com.android.dialer.speeddial.FavoritesViewHolder.FavoriteContactsListener;
	import com.android.dialer.speeddial.HeaderViewHolder.SpeedDialHeaderListener;
	import com.android.dialer.speeddial.SpeedDialFragment.HostInterface;
	import com.android.dialer.speeddial.SuggestionViewHolder.SuggestedContactsListener;
	import com.android.dialer.speeddial.draghelper.SpeedDialItemTouchHelperCallback.ItemTouchHelperAdapter;
	import com.android.dialer.speeddial.loader.SpeedDialUiItem;
	import com.google.common.collect.ImmutableList;

	import java.lang.annotation.Retention;
	import java.lang.annotation.RetentionPolicy;
	import java.util.ArrayList;
	import java.util.List;
	import java.util.Map;

	/**
	* RecyclerView adapter for {@link SpeedDialFragment}.
	*
	* <p>Displays a list in the following order:
	*
	* <ol>
	* <li>Favorite contacts header (with add button)
	* <li>Favorite contacts
	* <li>Suggested contacts header
	* <li>Suggested contacts
	* </ol>
	*/
	public final class SpeedDialAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
	implements ItemTouchHelperAdapter {

	private static final int NON_CONTACT_ITEM_NUMBER_BEFORE_FAVORITES = 2;
	private static final int NON_CONTACT_ITEM_NUMBER_BEFORE_SUGGESTION = 3;

	private static final float IN_REMOVE_VIEW_SCALE = 0.5f;
	private static final float IN_REMOVE_VIEW_ALPHA = 0.5f;

	@Retention(RetentionPolicy.SOURCE)
	@IntDef({RowType.REMOVE_VIEW, RowType.STARRED_HEADER, RowType.SUGGESTION_HEADER, RowType.STARRED,
	RowType.SUGGESTION})
	@interface RowType {
	int REMOVE_VIEW = 0;
	int STARRED_HEADER = 1;
	int SUGGESTION_HEADER = 2;
	int STARRED = 3;
	int SUGGESTION = 4;
	}

	private final Context context;
	private final FavoriteContactsListener favoritesListener;
	private final SuggestedContactsListener suggestedListener;
	private final SpeedDialHeaderListener headerListener;
	private final HostInterface hostInterface;

	private final Map<Integer, Integer> positionToRowTypeMap = new ArrayMap<>();
	private List<SpeedDialUiItem> speedDialUiItems;

	// Needed for FavoriteViewHolder
	private ItemTouchHelper itemTouchHelper;

	private RemoveViewHolder removeViewHolder;
	private FavoritesViewHolder draggingFavoritesViewHolder;

	public SpeedDialAdapter(
	Context context,
	FavoriteContactsListener favoritesListener,
	SuggestedContactsListener suggestedListener,
	SpeedDialHeaderListener headerListener,
	HostInterface hostInterface) {
	this.context = context;
	this.favoritesListener = favoritesListener;
	this.suggestedListener = suggestedListener;
	this.headerListener = headerListener;
	this.hostInterface = hostInterface;
	}

	@Override
	public int getItemViewType(int position) {
	return positionToRowTypeMap.get(position);
	}

	@NonNull
	@Override
	public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
	LayoutInflater inflater = LayoutInflater.from(context);
	switch (viewType) {
	case RowType.STARRED:
	return new FavoritesViewHolder(
	inflater.inflate(R.layout.favorite_item_layout, parent, false),
	itemTouchHelper,
	favoritesListener);
	case RowType.SUGGESTION:
	return new SuggestionViewHolder(
	inflater.inflate(R.layout.suggestion_row_layout, parent, false), suggestedListener);
	case RowType.STARRED_HEADER:
	case RowType.SUGGESTION_HEADER:
	return new HeaderViewHolder(
	inflater.inflate(R.layout.speed_dial_header_layout, parent, false), headerListener);
	case RowType.REMOVE_VIEW:
	removeViewHolder =
	new RemoveViewHolder(
	inflater.inflate(R.layout.favorite_remove_view_layout, parent, false));
	return removeViewHolder;
	default:
	throw Assert.createIllegalStateFailException("Invalid viewType: " + viewType);
	}
	}

	@Override
	public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
	switch (getItemViewType(position)) {
	case RowType.STARRED_HEADER:
	((HeaderViewHolder) holder).setHeaderText(R.string.favorites_header);
	((HeaderViewHolder) holder).showAddButton(true);
	return;
	case RowType.SUGGESTION_HEADER:
	((HeaderViewHolder) holder).setHeaderText(R.string.suggestions_header);
	((HeaderViewHolder) holder).showAddButton(false);
	return;
	case RowType.STARRED:
	((FavoritesViewHolder) holder).bind(context, speedDialUiItems.get(position - 2));
	// Removed item might come back
	FrameLayout avatarContainer = ((FavoritesViewHolder) holder).getAvatarContainer();
	avatarContainer.setScaleX(1);
	avatarContainer.setScaleY(1);
	avatarContainer.setAlpha(1);
	break;
	case RowType.SUGGESTION:
	((SuggestionViewHolder) holder).bind(context, speedDialUiItems.get(position - 3));
	break;
	case RowType.REMOVE_VIEW:
	break;
	default:
	throw Assert.createIllegalStateFailException("Invalid view holder: " + holder);
	}
	}

	@Override
	public int getItemCount() {
	return positionToRowTypeMap.size();
	}

	public void setSpeedDialUiItems(List<SpeedDialUiItem> immutableSpeedDialUiItems) {
	speedDialUiItems = new ArrayList<>();
	speedDialUiItems.addAll(immutableSpeedDialUiItems);
	speedDialUiItems.sort(
	(o1, o2) -> {
	if (o1.isStarred() && o2.isStarred()) {
	return Integer.compare(o1.pinnedPosition().orElse(-1), o2.pinnedPosition().orElse(-1));
	}
	return Boolean.compare(o2.isStarred(), o1.isStarred());
	});
	updatePositionToRowTypeMap();
	}

	private void updatePositionToRowTypeMap() {
	positionToRowTypeMap.clear();
	if (speedDialUiItems.isEmpty()) {
	return;
	}

	positionToRowTypeMap.put(0, RowType.REMOVE_VIEW);
	// Show the add favorites even if there are no favorite contacts
	positionToRowTypeMap.put(1, RowType.STARRED_HEADER);
	int positionOfSuggestionHeader = NON_CONTACT_ITEM_NUMBER_BEFORE_FAVORITES;
	for (int i = 0; i < speedDialUiItems.size(); i++) {
	if (speedDialUiItems.get(i).isStarred()) {
	positionToRowTypeMap.put(i + NON_CONTACT_ITEM_NUMBER_BEFORE_FAVORITES, RowType.STARRED);
	positionOfSuggestionHeader++;
	} else {
	positionToRowTypeMap.put(i + NON_CONTACT_ITEM_NUMBER_BEFORE_SUGGESTION, RowType.SUGGESTION);
	}
	}
	if (!speedDialUiItems.get(speedDialUiItems.size() - 1).isStarred()) {
	positionToRowTypeMap.put(positionOfSuggestionHeader, RowType.SUGGESTION_HEADER);
	}
	}

	public ImmutableList<SpeedDialUiItem> getSpeedDialUiItems() {
	if (speedDialUiItems == null \|\| speedDialUiItems.isEmpty()) {
	return ImmutableList.of();
	}
	return ImmutableList.copyOf(speedDialUiItems);
	}

	public GridLayoutManager.SpanSizeLookup getSpanSizeLookup() {
	return new GridLayoutManager.SpanSizeLookup() {
	@Override
	public int getSpanSize(int position) {
	switch (getItemViewType(position)) {
	case RowType.SUGGESTION:
	case RowType.STARRED_HEADER:
	case RowType.SUGGESTION_HEADER:
	case RowType.REMOVE_VIEW:
	return 3; // span the whole screen
	case RowType.STARRED:
	return 1; // span 1/3 of the screen
	default:
	throw Assert.createIllegalStateFailException(
	"Invalid row type: " + positionToRowTypeMap.get(position));
	}
	}
	};
	}

	@Override
	public void onItemMove(int fromPosition, int toPosition) {
	if (toPosition == 0) {
	// drop to removeView
	return;
	}
	// fromPosition/toPosition correspond to adapter position, which is off by 1 from the list
	// position b/c of the favorites header. So subtract 1 here.
	speedDialUiItems.add(toPosition - 2, speedDialUiItems.remove(fromPosition - 2));
	notifyItemMoved(fromPosition, toPosition);
	}

	@Override
	public boolean canDropOver(ViewHolder target) {
	return target instanceof FavoritesViewHolder \|\| target instanceof RemoveViewHolder;
	}

	@Override
	public void onSelectedChanged(@Nullable ViewHolder viewHolder, int actionState) {
	switch (actionState) {
	case ItemTouchHelper.ACTION_STATE_DRAG:
	if (viewHolder != null) {
	draggingFavoritesViewHolder = (FavoritesViewHolder) viewHolder;
	draggingFavoritesViewHolder.onSelectedChanged(true);
	hostInterface.dragFavorite(true);
	removeViewHolder.show();
	}
	break;
	case ItemTouchHelper.ACTION_STATE_IDLE:
	// viewHolder is null in this case
	if (draggingFavoritesViewHolder != null) {
	draggingFavoritesViewHolder.onSelectedChanged(false);
	draggingFavoritesViewHolder = null;
	hostInterface.dragFavorite(false);
	removeViewHolder.hide();
	}
	break;
	default:
	break;
	}
	}

	@Override
	public void enterRemoveView() {
	if (draggingFavoritesViewHolder != null) {
	draggingFavoritesViewHolder
	.getAvatarContainer()
	.animate()
	.scaleX(IN_REMOVE_VIEW_SCALE)
	.scaleY(IN_REMOVE_VIEW_SCALE)
	.alpha(IN_REMOVE_VIEW_ALPHA)
	.start();
	}
	}

	@Override
	public void leaveRemoveView() {
	if (draggingFavoritesViewHolder != null) {
	draggingFavoritesViewHolder
	.getAvatarContainer()
	.animate()
	.scaleX(1)
	.scaleY(1)
	.alpha(1)
	.start();
	}
	}

	@Override
	public void dropOnRemoveView(ViewHolder fromViewHolder) {
	if (!(fromViewHolder instanceof FavoritesViewHolder)) {
	return;
	}
	int fromPosition = fromViewHolder.getAdapterPosition();

	SpeedDialUiItem removedItem = speedDialUiItems.remove(fromPosition - 2);
	favoritesListener.onRequestRemove(removedItem);
	((FavoritesViewHolder) fromViewHolder)
	.getAvatarContainer()
	.animate()
	.scaleX(0)
	.scaleY(0)
	.alpha(0)
	.setInterpolator(new AnticipateInterpolator())
	.start();
	updatePositionToRowTypeMap();
	}

	public void setItemTouchHelper(ItemTouchHelper itemTouchHelper) {
	this.itemTouchHelper = itemTouchHelper;
	}

	/** Returns true if there are suggested contacts. */
	public boolean hasFrequents() {
	return !speedDialUiItems.isEmpty() && getItemViewType(getItemCount() - 1) == RowType.SUGGESTION;
	}
	}