1 /*
2  * Copyright (C) 2015 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 androidx.leanback.preference;
18 
19 import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP_PREFIX;
20 
21 import android.content.Context;
22 import android.util.AttributeSet;
23 import android.view.KeyEvent;
24 import android.widget.FrameLayout;
25 
26 import androidx.annotation.RestrictTo;
27 
28 import org.jspecify.annotations.NonNull;
29 
30 /**
31  */
32 @RestrictTo(LIBRARY_GROUP_PREFIX)
33 public class LeanbackSettingsRootView extends FrameLayout {
34 
35     private OnKeyListener mOnBackKeyListener;
36 
LeanbackSettingsRootView(Context context)37     public LeanbackSettingsRootView(Context context) {
38         super(context);
39     }
40 
LeanbackSettingsRootView(Context context, AttributeSet attrs)41     public LeanbackSettingsRootView(Context context, AttributeSet attrs) {
42         super(context, attrs);
43     }
44 
LeanbackSettingsRootView(Context context, AttributeSet attrs, int defStyleAttr)45     public LeanbackSettingsRootView(Context context, AttributeSet attrs, int defStyleAttr) {
46         super(context, attrs, defStyleAttr);
47     }
48 
setOnBackKeyListener(OnKeyListener backKeyListener)49     public void setOnBackKeyListener(OnKeyListener backKeyListener) {
50         mOnBackKeyListener = backKeyListener;
51     }
52 
53     @Override
dispatchKeyEvent(@onNull KeyEvent event)54     public boolean dispatchKeyEvent(@NonNull KeyEvent event) {
55         boolean handled = false;
56         if (event.getAction() == KeyEvent.ACTION_UP && event.getKeyCode() == KeyEvent.KEYCODE_BACK
57                 && mOnBackKeyListener != null) {
58             handled = mOnBackKeyListener.onKey(this, event.getKeyCode(), event);
59         }
60         return handled || super.dispatchKeyEvent(event);
61     }
62 }
63