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
  24 import androidx.annotation.NonNull;
  25 import androidx.appcompat.app.AppCompatDialogFragment;
  26
  27 import net.ktnx.mobileledger.R;
  28 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  29
  30 import java.util.Calendar;
  31 import java.util.GregorianCalendar;
  32 import java.util.Objects;
  33 import java.util.regex.Matcher;
  34 import java.util.regex.Pattern;
  35
  36 public class DatePickerFragment extends AppCompatDialogFragment
  37         implements CalendarView.OnDateChangeListener {
  38     static final Pattern reYMD = Pattern.compile("^\\s*(\\d+)\\d*/\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
  39     static final Pattern reMD = Pattern.compile("^\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
  40     static final Pattern reD = Pattern.compile("\\s*(\\d+)\\s*$");
  41     private Calendar presentDate = GregorianCalendar.getInstance();
  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     public void setCurrentDateFromText(CharSequence present) {
  51         final Calendar now = GregorianCalendar.getInstance();
  52         int year = now.get(GregorianCalendar.YEAR);
  53         int month = now.get(GregorianCalendar.MONTH);
  54         int day = now.get(GregorianCalendar.DAY_OF_MONTH);
  55
  56         Matcher m = reYMD.matcher(present);
  57         if (m.matches()) {
  58             year = Integer.parseInt(m.group(1));
  59             month = Integer.parseInt(m.group(2)) - 1;   // month is 0-based
  60             day = Integer.parseInt(m.group(3));
  61         }
  62         else {
  63             m = reMD.matcher(present);
  64             if (m.matches()) {
  65                 month = Integer.parseInt(m.group(1)) - 1;
  66                 day = Integer.parseInt(m.group(2));
  67             }
  68             else {
  69                 m = reD.matcher(present);
  70                 if (m.matches()) {
  71                     day = Integer.parseInt(m.group(1));
  72                 }
  73             }
  74         }
  75
  76         presentDate.set(year, month, day);
  77     }
  78     @NonNull
  79     @Override
  80     public Dialog onCreateDialog(Bundle savedInstanceState) {
  81         Dialog dpd = new Dialog(Objects.requireNonNull(getActivity()));
  82         dpd.setContentView(R.layout.date_picker_view);
  83         dpd.setTitle(null);
  84         CalendarView cv = dpd.findViewById(R.id.calendarView);
  85         cv.setDate(presentDate.getTime()
  86                               .getTime());
  87
  88         if (futureDates == MobileLedgerProfile.FutureDates.All) {
  89             cv.setMaxDate(Long.MAX_VALUE);
  90         }
  91         else {
  92             final Calendar dateLimit = GregorianCalendar.getInstance();
  93             switch (futureDates) {
  94                 case None:
  95                     // already there
  96                     break;
  97                 case OneWeek:
  98                     dateLimit.add(Calendar.DAY_OF_MONTH, 7);
  99                     break;
 100                 case TwoWeeks:
 101                     dateLimit.add(Calendar.DAY_OF_MONTH, 14);
 102                     break;
 103                 case OneMonth:
 104                     dateLimit.add(Calendar.MONTH, 1);
 105                     break;
 106                 case TwoMonths:
 107                     dateLimit.add(Calendar.MONTH, 2);
 108                     break;
 109                 case ThreeMonths:
 110                     dateLimit.add(Calendar.MONTH, 3);
 111                     break;
 112                 case SixMonths:
 113                     dateLimit.add(Calendar.MONTH, 6);
 114                     break;
 115                 case OneYear:
 116                     dateLimit.add(Calendar.YEAR, 1);
 117                     break;
 118             }
 119             cv.setMaxDate(dateLimit.getTime()
 120                                    .getTime());
 121         }
 122
 123         cv.setOnDateChangeListener(this);
 124
 125         return dpd;
 126     }
 127     @Override
 128     public void onSelectedDayChange(@NonNull CalendarView view, int year, int month,
 129                                     int dayOfMonth) {
 130         this.dismiss();
 131         if (onDatePickedListener != null)
 132             onDatePickedListener.onDatePicked(year, month, dayOfMonth);
 133     }
 134     public void setOnDatePickedListener(DatePickedListener listener) {
 135         onDatePickedListener = listener;
 136     }
 137     public interface DatePickedListener {
 138         void onDatePicked(int year, int month, int day);
 139     }
 140 }