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      1 /*
      2  * Copyright (C) 2017 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 package com.example.android.autofill.app;
     17 
     18 import android.app.DatePickerDialog;
     19 import android.app.Dialog;
     20 import android.content.Context;
     21 import android.os.Bundle;
     22 import android.support.annotation.NonNull;
     23 import android.support.annotation.Nullable;
     24 import android.support.v4.app.DialogFragment;
     25 import android.support.v4.app.FragmentManager;
     26 import android.support.v7.widget.AppCompatEditText;
     27 import android.text.format.DateFormat;
     28 import android.util.AttributeSet;
     29 import android.util.Log;
     30 import android.view.View;
     31 import android.view.autofill.AutofillValue;
     32 import android.widget.DatePicker;
     33 
     34 import java.util.Calendar;
     35 import java.util.Date;
     36 
     37 import static com.example.android.autofill.app.CommonUtil.DEBUG;
     38 import static com.example.android.autofill.app.CommonUtil.TAG;
     39 
     40 /**
     41  * A custom view that represents a {@link View#AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DATE} using
     42  * a non-editable {@link EditText} that triggers a {@link DatePickerDialog} to represent the
     43  * credit card expiration month and year.
     44  */
     45 public class CreditCardExpirationDatePickerView extends AppCompatEditText {
     46 
     47     private static final int CC_EXP_YEARS_COUNT = 5;
     48 
     49     /**
     50      * Calendar instance used for month / year calculations. Should be reset before each use.
     51      */
     52     private final Calendar mTempCalendar;
     53 
     54     private int mMonth;
     55     private int mYear;
     56 
     57     public CreditCardExpirationDatePickerView(@NonNull Context context) {
     58         this(context, null);
     59     }
     60 
     61     public CreditCardExpirationDatePickerView(@NonNull Context context,
     62             @Nullable AttributeSet attrs) {
     63         this(context, attrs, 0);
     64     }
     65 
     66     public CreditCardExpirationDatePickerView(@NonNull Context context,
     67             @Nullable AttributeSet attrs, int defStyleAttr) {
     68         super(context, attrs, defStyleAttr);
     69         // Use the current date as the initial date in the picker.
     70         mTempCalendar = Calendar.getInstance();
     71         mYear = mTempCalendar.get(Calendar.YEAR);
     72         mMonth = mTempCalendar.get(Calendar.MONTH);
     73     }
     74 
     75     /**
     76      * Gets a temporary calendar set with the View's year and month.
     77      */
     78     private Calendar getCalendar() {
     79         mTempCalendar.clear();
     80         mTempCalendar.set(Calendar.YEAR, mYear);
     81         mTempCalendar.set(Calendar.MONTH, mMonth);
     82         mTempCalendar.set(Calendar.DATE, 1);
     83         return mTempCalendar;
     84     }
     85 
     86     @Override
     87     public AutofillValue getAutofillValue() {
     88         Calendar c = getCalendar();
     89         AutofillValue value = AutofillValue.forDate(c.getTimeInMillis());
     90         if (DEBUG) Log.d(TAG, "getAutofillValue(): " + value);
     91         return value;
     92     }
     93 
     94     @Override
     95     public void autofill(AutofillValue value) {
     96         if (value == null || !value.isDate()) {
     97             Log.w(TAG, "autofill(): invalid value " + value);
     98             return;
     99         }
    100         long time = value.getDateValue();
    101         mTempCalendar.setTimeInMillis(time);
    102         int year = mTempCalendar.get(Calendar.YEAR);
    103         int month = mTempCalendar.get(Calendar.MONTH);
    104         if (DEBUG) Log.d(TAG, "autofill(" + value + "): " + month + "/" + year);
    105         setDate(year, month);
    106     }
    107 
    108     private void setDate(int year, int month) {
    109         mYear = year;
    110         mMonth = month;
    111         Date selectedDate = new Date(getCalendar().getTimeInMillis());
    112         String dateString = DateFormat.getDateFormat(getContext()).format(selectedDate);
    113         setText(dateString);
    114     }
    115 
    116     @Override
    117     public int getAutofillType() {
    118         return AUTOFILL_TYPE_DATE;
    119     }
    120 
    121     public void reset() {
    122         mTempCalendar.setTimeInMillis(System.currentTimeMillis());
    123         setDate(mTempCalendar.get(Calendar.YEAR), mTempCalendar.get(Calendar.MONTH));
    124     }
    125 
    126     public void showDatePickerDialog(FragmentManager fragmentManager) {
    127         DatePickerFragment newFragment = new DatePickerFragment();
    128         newFragment.mParent = this;
    129         newFragment.show(fragmentManager, "datePicker");
    130     }
    131 
    132     public static class DatePickerFragment extends DialogFragment
    133             implements DatePickerDialog.OnDateSetListener {
    134 
    135         private CreditCardExpirationDatePickerView mParent;
    136 
    137         @Override
    138         public Dialog onCreateDialog(Bundle savedInstanceState) {
    139             DatePickerDialog dialog = new DatePickerDialog(getActivity(),
    140                     R.style.CustomDatePickerDialogTheme, this, mParent.mYear, mParent.mMonth, 1);
    141 
    142             DatePicker datePicker = dialog.getDatePicker();
    143 
    144             // Limit range.
    145             Calendar c = mParent.getCalendar();
    146             datePicker.setMinDate(c.getTimeInMillis());
    147             c.set(Calendar.YEAR, mParent.mYear + CC_EXP_YEARS_COUNT - 1);
    148             datePicker.setMaxDate(c.getTimeInMillis());
    149 
    150             // Remove day.
    151             datePicker.findViewById(getResources().getIdentifier("day", "id", "android"))
    152                     .setVisibility(View.GONE);
    153             return dialog;
    154         }
    155 
    156         @Override
    157         public void onDateSet(DatePicker view, int year, int month, int day) {
    158             mParent.setDate(year, month);
    159         }
    160     }
    161 }