1 /* 2 * Copyright (C) 2018 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.car.settings.security; 18 19 import android.annotation.DrawableRes; 20 import android.annotation.Nullable; 21 import android.content.Context; 22 import android.support.annotation.VisibleForTesting; 23 import android.util.AttributeSet; 24 import android.view.LayoutInflater; 25 import android.view.View; 26 import android.widget.GridLayout; 27 import android.widget.ImageButton; 28 import android.widget.TextView; 29 30 import com.android.car.settings.R; 31 32 import java.util.ArrayList; 33 import java.util.List; 34 35 /** 36 * A custom view for the PIN pad. 37 */ 38 public class PinPadView extends GridLayout { 39 // Number of keys in the pin pad, 0-9 plus backspace and enter keys. 40 @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE) 41 static final int NUM_KEYS = 12; 42 43 @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE) 44 static final int[] PIN_PAD_DIGIT_KEYS = { R.id.key0, R.id.key1, R.id.key2, R.id.key3, 45 R.id.key4, R.id.key5, R.id.key6, R.id.key7, R.id.key8, R.id.key9 }; 46 47 private final List<View> mPinKeys = new ArrayList<>(NUM_KEYS); 48 private PinPadClickListener mOnClickListener; 49 private ImageButton mEnterKey; 50 PinPadView(Context context)51 public PinPadView(Context context) { 52 super(context); 53 init(); 54 } 55 PinPadView(Context context, AttributeSet attrs)56 public PinPadView(Context context, AttributeSet attrs) { 57 super(context, attrs); 58 init(); 59 } 60 PinPadView(Context context, @Nullable AttributeSet attrs, int defStyleAttr)61 public PinPadView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 62 super(context, attrs, defStyleAttr); 63 init(); 64 } 65 PinPadView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes)66 public PinPadView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, 67 int defStyleRes) { 68 super(context, attrs, defStyleAttr, defStyleRes); 69 init(); 70 } 71 72 /** 73 * Set the call back for key click. 74 * 75 * @param pinPadClickListener The call back. 76 */ setPinPadClickListener(PinPadClickListener pinPadClickListener)77 public void setPinPadClickListener(PinPadClickListener pinPadClickListener) { 78 mOnClickListener = pinPadClickListener; 79 } 80 81 @Override setEnabled(boolean enabled)82 public void setEnabled(boolean enabled) { 83 super.setEnabled(enabled); 84 for (View key: mPinKeys) { 85 key.setEnabled(enabled); 86 } 87 } 88 89 /** 90 * Set the resource Id of the enter key icon. 91 * 92 * @param drawableId The resource Id of the drawable. 93 */ setEnterKeyIcon(@rawableRes int drawableId)94 public void setEnterKeyIcon(@DrawableRes int drawableId) { 95 mEnterKey.setImageResource(drawableId); 96 } 97 init()98 private void init() { 99 LayoutInflater inflater = LayoutInflater.from(getContext()); 100 inflater.inflate(R.layout.pin_pad_view, this, true); 101 102 for (int keyId : PIN_PAD_DIGIT_KEYS) { 103 TextView key = (TextView) findViewById(keyId); 104 String digit = key.getTag().toString(); 105 key.setOnClickListener(v -> { 106 mOnClickListener.onDigitKeyClick(digit); 107 }); 108 mPinKeys.add(key); 109 } 110 111 View backspace = findViewById(R.id.key_backspace); 112 backspace.setOnClickListener(v -> mOnClickListener.onBackspaceClick()); 113 mPinKeys.add(backspace); 114 115 mEnterKey = (ImageButton) findViewById(R.id.key_enter); 116 mEnterKey.setOnClickListener(v -> mOnClickListener.onEnterKeyClick()); 117 mPinKeys.add(mEnterKey); 118 } 119 120 /** 121 * The call back interface for onClick event in the view. 122 */ 123 public interface PinPadClickListener { 124 /** 125 * One of the digit key has been clicked. 126 * 127 * @param digit A String representing a digit between 0 and 9. 128 */ onDigitKeyClick(String digit)129 void onDigitKeyClick(String digit); 130 131 /** 132 * The backspace key has been clicked. 133 */ onBackspaceClick()134 void onBackspaceClick(); 135 136 /** 137 * The enter key has been clicked. 138 */ onEnterKeyClick()139 void onEnterKeyClick(); 140 } 141 } 142