app/src/main/java/net/ktnx/mobileledger/ui/DatePickerFragment.java

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui;
  19
  20 import android.app.Dialog;
  21 import android.os.Bundle;
  22 import android.widget.CalendarView;
  23 import android.widget.TextView;
  24
  25 import androidx.annotation.NonNull;
  26 import androidx.appcompat.app.AppCompatDialogFragment;
  27
  28 import net.ktnx.mobileledger.R;
  29 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  30
  31 import java.util.Calendar;
  32 import java.util.GregorianCalendar;
  33 import java.util.Objects;
  34 import java.util.regex.Matcher;
  35 import java.util.regex.Pattern;
  36
  37 public class DatePickerFragment extends AppCompatDialogFragment
  38         implements CalendarView.OnDateChangeListener {
  39     static final Pattern reYMD = Pattern.compile("^\\s*(\\d+)\\d*/\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
  40     static final Pattern reMD = Pattern.compile("^\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
  41     static final Pattern reD = Pattern.compile("\\s*(\\d+)\\s*$");
  42     private DatePickedListener onDatePickedListener;
  43     private MobileLedgerProfile.FutureDates futureDates = MobileLedgerProfile.FutureDates.None;
  44     public MobileLedgerProfile.FutureDates getFutureDates() {
  45         return futureDates;
  46     }
  47     public void setFutureDates(MobileLedgerProfile.FutureDates futureDates) {
  48         this.futureDates = futureDates;
  49     }
  50     @NonNull
  51     @Override
  52     public Dialog onCreateDialog(Bundle savedInstanceState) {
  53         final Calendar c = GregorianCalendar.getInstance();
  54         int year = c.get(GregorianCalendar.YEAR);
  55         int month = c.get(GregorianCalendar.MONTH);
  56         int day = c.get(GregorianCalendar.DAY_OF_MONTH);
  57         long todayStamp = c.getTimeInMillis();
  58         TextView date =
  59                 Objects.requireNonNull(getActivity()).findViewById(R.id.new_transaction_date);
  60
  61         CharSequence present = date.getText();
  62
  63         Matcher m = reYMD.matcher(present);
  64         if (m.matches()) {
  65             year = Integer.parseInt(m.group(1));
  66             month = Integer.parseInt(m.group(2)) - 1;   // month is 0-based
  67             day = Integer.parseInt(m.group(3));
  68         }
  69         else {
  70             m = reMD.matcher(present);
  71             if (m.matches()) {
  72                 month = Integer.parseInt(m.group(1)) - 1;
  73                 day = Integer.parseInt(m.group(2));
  74             }
  75             else {
  76                 m = reD.matcher(present);
  77                 if (m.matches()) {
  78                     day = Integer.parseInt(m.group(1));
  79                 }
  80             }
  81         }
  82
  83         c.set(year, month, day);
  84
  85         Dialog dpd = new Dialog(Objects.requireNonNull(getActivity()));
  86         dpd.setContentView(R.layout.date_picker_view);
  87         dpd.setTitle(null);
  88         CalendarView cv = dpd.findViewById(R.id.calendarView);
  89         cv.setDate(c.getTime()
  90                     .getTime());
  91
  92         if (futureDates == MobileLedgerProfile.FutureDates.All) {
  93             cv.setMaxDate(Long.MAX_VALUE);
  94         }
  95         else {
  96             switch (futureDates) {
  97                 case None:
  98                     // already there
  99                     break;
 100                 case OneMonth:
 101                     c.add(Calendar.MONTH, 1);
 102                     break;
 103                 case TwoMonths:
 104                     c.add(Calendar.MONTH, 2);
 105                     break;
 106                 case ThreeMonths:
 107                     c.add(Calendar.MONTH, 3);
 108                     break;
 109                 case SixMonths:
 110                     c.add(Calendar.MONTH, 6);
 111                     break;
 112                 case OneYear:
 113                     c.add(Calendar.YEAR, 1);
 114                     break;
 115             }
 116             cv.setMaxDate(c.getTime()
 117                            .getTime());
 118         }
 119
 120         cv.setOnDateChangeListener(this);
 121
 122         return dpd;
 123     }
 124     @Override
 125     public void onSelectedDayChange(@NonNull CalendarView view, int year, int month,
 126                                     int dayOfMonth) {
 127         this.dismiss();
 128         if (onDatePickedListener != null)
 129             onDatePickedListener.onDatePicked(year, month, dayOfMonth);
 130     }
 131     public void setOnDatePickedListener(DatePickedListener listener) {
 132         onDatePickedListener = listener;
 133     }
 134     public interface DatePickedListener {
 135         void onDatePicked(int year, int month, int day);
 136     }
 137 }