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