| /* |
| * Copyright (C) 2018 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.settings.homepage.contextualcards; |
| |
| import androidx.recyclerview.widget.DiffUtil; |
| |
| import java.util.List; |
| |
| /** |
| * A DiffCallback to calculate the difference between old and new {@link ContextualCard} List. |
| */ |
| public class ContextualCardsDiffCallback extends DiffUtil.Callback { |
| |
| private final List<ContextualCard> mOldCards; |
| private final List<ContextualCard> mNewCards; |
| |
| public ContextualCardsDiffCallback(List<ContextualCard> oldCards, |
| List<ContextualCard> newCards) { |
| mOldCards = oldCards; |
| mNewCards = newCards; |
| } |
| |
| @Override |
| public int getOldListSize() { |
| return mOldCards.size(); |
| } |
| |
| @Override |
| public int getNewListSize() { |
| return mNewCards.size(); |
| } |
| |
| @Override |
| public boolean areItemsTheSame(int oldCardPosition, int newCardPosition) { |
| return mOldCards.get(oldCardPosition).getName().equals( |
| mNewCards.get(newCardPosition).getName()); |
| } |
| |
| @Override |
| public boolean areContentsTheSame(int oldCardPosition, int newCardPosition) { |
| // Slices with toggles needs to be updated continuously, which means their contents may |
| // change. So here we assume the content will always be different to force view rebinding. |
| if (mNewCards.get(newCardPosition).hasInlineAction()) { |
| return false; |
| } |
| return mOldCards.get(oldCardPosition).equals(mNewCards.get(newCardPosition)); |
| } |
| } |