1 /*
2  * Copyright (C) 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.car.ui.recyclerview;
18 
19 /**
20  * A trivial implementation that doesn't do any filtering (simplifies the filter's code).
21  */
22 public class PassThroughFilter implements RangeFilter {
23     private int mCount;
24 
25     @Override
recompute(int newCount, int pivotIndex)26     public void recompute(int newCount, int pivotIndex) {
27         mCount = newCount;
28     }
29 
30     @Override
notifyPivotIndexChanged(int pivotIndex)31     public void notifyPivotIndexChanged(int pivotIndex) {
32     }
33 
34     @Override
getFilteredCount()35     public int getFilteredCount() {
36         return mCount;
37     }
38 
39     @Override
indexToPosition(int index)40     public int indexToPosition(int index) {
41         return index;
42     }
43 
44     @Override
positionToIndex(int position)45     public int positionToIndex(int position) {
46         return position;
47     }
48 
49     @Override
invalidateMessagePositions()50     public void invalidateMessagePositions() {
51     }
52 
53     @Override
applyFilter()54     public void applyFilter() {
55     }
56 
57     @Override
removeFilter()58     public void removeFilter() {
59     }
60 };
61