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      1 /*
      2  * Copyright (C) 2012 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.keyguard;
     18 
     19 import android.content.Context;
     20 import android.text.Editable;
     21 import android.text.InputType;
     22 import android.text.TextWatcher;
     23 import android.text.method.DigitsKeyListener;
     24 import android.util.AttributeSet;
     25 import android.view.View;
     26 import android.widget.TextView.OnEditorActionListener;
     27 
     28 /**
     29  * Displays a PIN pad for unlocking.
     30  */
     31 public class KeyguardPINView extends KeyguardAbsKeyInputView
     32         implements KeyguardSecurityView, OnEditorActionListener, TextWatcher {
     33 
     34     public KeyguardPINView(Context context) {
     35         this(context, null);
     36     }
     37 
     38     public KeyguardPINView(Context context, AttributeSet attrs) {
     39         super(context, attrs);
     40     }
     41 
     42     protected void resetState() {
     43         if (KeyguardUpdateMonitor.getInstance(mContext).getMaxBiometricUnlockAttemptsReached()) {
     44             mSecurityMessageDisplay.setMessage(R.string.faceunlock_multiple_failures, true);
     45         } else {
     46             mSecurityMessageDisplay.setMessage(R.string.kg_pin_instructions, false);
     47         }
     48         mPasswordEntry.setEnabled(true);
     49     }
     50 
     51     @Override
     52     protected int getPasswordTextViewId() {
     53         return R.id.pinEntry;
     54     }
     55 
     56     @Override
     57     protected void onFinishInflate() {
     58         super.onFinishInflate();
     59 
     60         final View ok = findViewById(R.id.key_enter);
     61         if (ok != null) {
     62             ok.setOnClickListener(new View.OnClickListener() {
     63                 @Override
     64                 public void onClick(View v) {
     65                     doHapticKeyClick();
     66                     if (mPasswordEntry.isEnabled()) {
     67                         verifyPasswordAndUnlock();
     68                     }
     69                 }
     70             });
     71             ok.setOnHoverListener(new LiftToActivateListener(getContext()));
     72         }
     73 
     74         // The delete button is of the PIN keyboard itself in some (e.g. tablet) layouts,
     75         // not a separate view
     76         View pinDelete = findViewById(R.id.delete_button);
     77         if (pinDelete != null) {
     78             pinDelete.setVisibility(View.VISIBLE);
     79             pinDelete.setOnClickListener(new OnClickListener() {
     80                 public void onClick(View v) {
     81                     // check for time-based lockouts
     82                     if (mPasswordEntry.isEnabled()) {
     83                         CharSequence str = mPasswordEntry.getText();
     84                         if (str.length() > 0) {
     85                             mPasswordEntry.setText(str.subSequence(0, str.length()-1));
     86                         }
     87                     }
     88                     doHapticKeyClick();
     89                 }
     90             });
     91             pinDelete.setOnLongClickListener(new View.OnLongClickListener() {
     92                 public boolean onLongClick(View v) {
     93                     // check for time-based lockouts
     94                     if (mPasswordEntry.isEnabled()) {
     95                         mPasswordEntry.setText("");
     96                     }
     97                     doHapticKeyClick();
     98                     return true;
     99                 }
    100             });
    101         }
    102 
    103         mPasswordEntry.setKeyListener(DigitsKeyListener.getInstance());
    104         mPasswordEntry.setInputType(InputType.TYPE_CLASS_NUMBER
    105                 | InputType.TYPE_NUMBER_VARIATION_PASSWORD);
    106 
    107         mPasswordEntry.requestFocus();
    108     }
    109 
    110     @Override
    111     public void showUsabilityHint() {
    112     }
    113 
    114     @Override
    115     public int getWrongPasswordStringId() {
    116         return R.string.kg_wrong_pin;
    117     }
    118 }
    119