| /* |
| * Copyright 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 androidx.recyclerview.widget; |
| |
| import androidx.annotation.NonNull; |
| |
| /** |
| * ListUpdateCallback that dispatches update events to the given adapter. |
| * |
| * @see DiffUtil.DiffResult#dispatchUpdatesTo(RecyclerView.Adapter) |
| */ |
| public final class AdapterListUpdateCallback implements ListUpdateCallback { |
| @NonNull |
| private final RecyclerView.Adapter mAdapter; |
| |
| /** |
| * Creates an AdapterListUpdateCallback that will dispatch update events to the given adapter. |
| * |
| * @param adapter The Adapter to send updates to. |
| */ |
| public AdapterListUpdateCallback(@NonNull RecyclerView.Adapter adapter) { |
| mAdapter = adapter; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void onInserted(int position, int count) { |
| mAdapter.notifyItemRangeInserted(position, count); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void onRemoved(int position, int count) { |
| mAdapter.notifyItemRangeRemoved(position, count); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void onMoved(int fromPosition, int toPosition) { |
| mAdapter.notifyItemMoved(fromPosition, toPosition); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void onChanged(int position, int count, Object payload) { |
| mAdapter.notifyItemRangeChanged(position, count, payload); |
| } |
| } |