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[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / DatePickerFragment.java
1 package net.ktnx.mobileledger;
2
3 import android.annotation.TargetApi;
4 import android.app.DatePickerDialog;
5 import android.app.Dialog;
6 import android.os.Build;
7 import android.os.Bundle;
8 import android.support.annotation.NonNull;
9 import android.support.v7.app.AppCompatDialogFragment;
10 import android.widget.DatePicker;
11 import android.widget.TextView;
12
13 import java.util.Calendar;
14 import java.util.GregorianCalendar;
15 import java.util.Locale;
16 import java.util.Objects;
17 import java.util.regex.Matcher;
18 import java.util.regex.Pattern;
19
20 public class DatePickerFragment extends AppCompatDialogFragment
21 implements DatePickerDialog.OnDateSetListener
22 {
23     @NonNull
24     @Override
25     public Dialog onCreateDialog(Bundle savedInstanceState) {
26         final Calendar c = GregorianCalendar.getInstance();
27         int year = c.get(GregorianCalendar.YEAR);
28         int month = c.get(GregorianCalendar.MONTH);
29         int day = c.get(GregorianCalendar.DAY_OF_MONTH);
30         TextView date = getActivity().findViewById(R.id.new_transaction_date);
31
32         CharSequence present = date.getText();
33
34         Pattern re_mon_day = Pattern.compile("^\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
35         Matcher m_mon_day = re_mon_day.matcher(present);
36
37         if (m_mon_day.matches()) {
38             month = Integer.parseInt(m_mon_day.group(0));
39             day = Integer.parseInt(m_mon_day.group(1));
40         }
41         else {
42             Pattern re_day = Pattern.compile("^\\s*(\\d{1,2})\\s*$");
43             Matcher m_day = re_day.matcher(present);
44             if (m_day.matches()) {
45                 day = Integer.parseInt(m_day.group(0));
46             }
47         }
48
49         return new DatePickerDialog(Objects.requireNonNull(getActivity()), this, year, month, day);
50     }
51
52     @TargetApi(Build.VERSION_CODES.O)
53     public void onDateSet(DatePicker view, int year, int month, int day) {
54         TextView date = getActivity().findViewById(R.id.new_transaction_date);
55
56         final Calendar c = GregorianCalendar.getInstance();
57         if ( c.get(GregorianCalendar.YEAR) == year && c.get(GregorianCalendar.MONTH) == month) {
58             date.setText(String.format(Locale.US, "%d", day));
59         }
60         else {
61             date.setText(String.format(Locale.US, "%d/%d", month, day));
62         }
63     }
64 }