1 /*
2  * Copyright (C) 2017 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 package com.android.documentsui.dirlist;
17 
18 import android.view.KeyEvent;
19 
20 import androidx.recyclerview.selection.ItemDetailsLookup.ItemDetails;
21 
22 /**
23  * KeyboardListener is implemented by {@link KeyInputHandler}. The handler
24  * must be called from RecyclerView.Holders in response to keyboard events.
25  */
26 public abstract class KeyboardEventListener<T extends ItemDetails<?>> {
27 
28     /**
29      * Handles key events on the view holder.
30      *
31      * @param details The target ItemHolder.
32      * @param keyCode Key code for the event.
33      * @param event KeyEvent for the event.
34      *
35      * @return Whether the event was handled.
36      */
onKey(T details, int keyCode, KeyEvent event)37     public abstract boolean onKey(T details, int keyCode, KeyEvent event);
38 }
39