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      1 /*
      2  * Copyright (C) 2008 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.phone;
     18 
     19 import android.app.AlertDialog;
     20 import android.content.Context;
     21 import android.preference.EditTextPreference;
     22 import android.text.InputType;
     23 import android.text.method.DigitsKeyListener;
     24 import android.text.method.PasswordTransformationMethod;
     25 import android.util.AttributeSet;
     26 import android.view.View;
     27 import android.widget.EditText;
     28 
     29 import java.util.Map;
     30 
     31 /**
     32  * Class similar to the com.android.settings.EditPinPreference
     33  * class, with a couple of modifications, including a different layout
     34  * for the dialog.
     35  */
     36 public class EditPinPreference extends EditTextPreference {
     37 
     38     private boolean shouldHideButtons;
     39 
     40     interface OnPinEnteredListener {
     41         void onPinEntered(EditPinPreference preference, boolean positiveResult);
     42     }
     43 
     44     private OnPinEnteredListener mPinListener;
     45 
     46     public void setOnPinEnteredListener(OnPinEnteredListener listener) {
     47         mPinListener = listener;
     48     }
     49 
     50     public EditPinPreference(Context context, AttributeSet attrs) {
     51         super(context, attrs);
     52     }
     53 
     54     public EditPinPreference(Context context, AttributeSet attrs, int defStyle) {
     55         super(context, attrs, defStyle);
     56     }
     57 
     58     /**
     59      * Overridden to setup the correct dialog layout, as well as setting up
     60      * other properties for the pin / puk entry field.
     61      */
     62     @Override
     63     protected View onCreateDialogView() {
     64         // set the dialog layout
     65         setDialogLayoutResource(R.layout.pref_dialog_editpin);
     66 
     67         View dialog = super.onCreateDialogView();
     68 
     69         getEditText().setInputType(InputType.TYPE_CLASS_NUMBER |
     70             InputType.TYPE_NUMBER_VARIATION_PASSWORD);
     71 
     72         return dialog;
     73     }
     74 
     75     @Override
     76     protected void onBindDialogView(View view) {
     77         super.onBindDialogView(view);
     78 
     79         // If the layout does not contain an edittext, hide the buttons.
     80         shouldHideButtons = (view.findViewById(android.R.id.edit) == null);
     81     }
     82 
     83     @Override
     84     protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
     85         super.onPrepareDialogBuilder(builder);
     86 
     87         // hide the buttons if we need to.
     88         if (shouldHideButtons) {
     89             builder.setPositiveButton(null, this);
     90             builder.setNegativeButton(null, this);
     91         }
     92     }
     93 
     94     @Override
     95     protected void onDialogClosed(boolean positiveResult) {
     96         super.onDialogClosed(positiveResult);
     97         if (mPinListener != null) {
     98             mPinListener.onPinEntered(this, positiveResult);
     99         }
    100     }
    101 
    102     /**
    103      * Externally visible method to bring up the dialog to
    104      * for multi-step / multi-dialog requests (like changing
    105      * the SIM pin).
    106      */
    107     public void showPinDialog() {
    108         showDialog(null);
    109     }
    110 }
    111