1 /* 2 * Copyright (C) 2021 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.systemui.car.userswitcher; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.KeyEvent; 22 import android.widget.LinearLayout; 23 24 import androidx.annotation.NonNull; 25 import androidx.annotation.Nullable; 26 27 /** Container for the user switcher which intercepts the key events. */ 28 public class UserSwitcherContainer extends LinearLayout { 29 30 private KeyEventHandler mKeyEventHandler; 31 UserSwitcherContainer(@onNull Context context)32 public UserSwitcherContainer(@NonNull Context context) { 33 super(context); 34 } 35 UserSwitcherContainer(@onNull Context context, @Nullable AttributeSet attrs)36 public UserSwitcherContainer(@NonNull Context context, @Nullable AttributeSet attrs) { 37 super(context, attrs); 38 } 39 UserSwitcherContainer(@onNull Context context, @Nullable AttributeSet attrs, int defStyleAttr)40 public UserSwitcherContainer(@NonNull Context context, @Nullable AttributeSet attrs, 41 int defStyleAttr) { 42 super(context, attrs, defStyleAttr); 43 } 44 UserSwitcherContainer(@onNull Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes)45 public UserSwitcherContainer(@NonNull Context context, @Nullable AttributeSet attrs, 46 int defStyleAttr, int defStyleRes) { 47 super(context, attrs, defStyleAttr, defStyleRes); 48 } 49 50 @Override dispatchKeyEvent(KeyEvent event)51 public boolean dispatchKeyEvent(KeyEvent event) { 52 if (super.dispatchKeyEvent(event)) { 53 return true; 54 } 55 56 if (mKeyEventHandler != null) { 57 return mKeyEventHandler.dispatchKeyEvent(event); 58 } 59 60 return false; 61 } 62 63 /** Sets a {@link KeyEventHandler} to help interact with the notification panel. */ setKeyEventHandler(KeyEventHandler keyEventHandler)64 public void setKeyEventHandler(KeyEventHandler keyEventHandler) { 65 mKeyEventHandler = keyEventHandler; 66 } 67 68 /** An interface to help interact with the notification panel. */ 69 public interface KeyEventHandler { 70 /** Allows handling of a {@link KeyEvent} if it wasn't already handled by the superclass. */ dispatchKeyEvent(KeyEvent event)71 boolean dispatchKeyEvent(KeyEvent event); 72 } 73 } 74