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 17package android.support.v17.preference; 18 19import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP; 20 21import android.content.Context; 22import android.support.annotation.NonNull; 23import android.support.annotation.RestrictTo; 24import android.util.AttributeSet; 25import android.view.KeyEvent; 26import android.widget.FrameLayout; 27 28/** 29 * @hide 30 */ 31@RestrictTo(LIBRARY_GROUP) 32public class LeanbackSettingsRootView extends FrameLayout { 33 34 private OnKeyListener mOnBackKeyListener; 35 36 public LeanbackSettingsRootView(Context context) { 37 super(context); 38 } 39 40 public LeanbackSettingsRootView(Context context, AttributeSet attrs) { 41 super(context, attrs); 42 } 43 44 public LeanbackSettingsRootView(Context context, AttributeSet attrs, int defStyleAttr) { 45 super(context, attrs, defStyleAttr); 46 } 47 48 public void setOnBackKeyListener(OnKeyListener backKeyListener) { 49 mOnBackKeyListener = backKeyListener; 50 } 51 52 @Override 53 public boolean dispatchKeyEvent(@NonNull KeyEvent event) { 54 boolean handled = false; 55 if (event.getAction() == KeyEvent.ACTION_UP && event.getKeyCode() == KeyEvent.KEYCODE_BACK 56 && mOnBackKeyListener != null) { 57 handled = mOnBackKeyListener.onKey(this, event.getKeyCode(), event); 58 } 59 return handled || super.dispatchKeyEvent(event); 60 } 61} 62