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

   1 /*
   2  * Copyright © 2020 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.annotation.Nullable;
  26 import androidx.appcompat.app.AppCompatDialogFragment;
  27
  28 import net.ktnx.mobileledger.R;
  29 import net.ktnx.mobileledger.model.FutureDates;
  30 import net.ktnx.mobileledger.utils.SimpleDate;
  31
  32 import java.util.Calendar;
  33 import java.util.GregorianCalendar;
  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 final Calendar presentDate = GregorianCalendar.getInstance();
  43     private DatePickedListener onDatePickedListener;
  44     private long minDate = 0;
  45     private long maxDate = Long.MAX_VALUE;
  46     public void setDateRange(@Nullable SimpleDate minDate, @Nullable SimpleDate maxDate) {
  47         if (minDate == null)
  48             this.minDate = 0;
  49         else
  50             this.minDate = minDate.toDate().getTime();
  51
  52         if (maxDate == null)
  53             this.maxDate = Long.MAX_VALUE;
  54         else
  55             this.maxDate = maxDate.toDate().getTime();
  56     }
  57     public void setFutureDates(FutureDates futureDates) {
  58         if (futureDates == FutureDates.All) {
  59             maxDate = Long.MAX_VALUE;
  60         }
  61         else {
  62             final Calendar dateLimit = GregorianCalendar.getInstance();
  63             switch (futureDates) {
  64                 case None:
  65                     // already there
  66                     break;
  67                 case OneWeek:
  68                     dateLimit.add(Calendar.DAY_OF_MONTH, 7);
  69                     break;
  70                 case TwoWeeks:
  71                     dateLimit.add(Calendar.DAY_OF_MONTH, 14);
  72                     break;
  73                 case OneMonth:
  74                     dateLimit.add(Calendar.MONTH, 1);
  75                     break;
  76                 case TwoMonths:
  77                     dateLimit.add(Calendar.MONTH, 2);
  78                     break;
  79                 case ThreeMonths:
  80                     dateLimit.add(Calendar.MONTH, 3);
  81                     break;
  82                 case SixMonths:
  83                     dateLimit.add(Calendar.MONTH, 6);
  84                     break;
  85                 case OneYear:
  86                     dateLimit.add(Calendar.YEAR, 1);
  87                     break;
  88             }
  89             maxDate = dateLimit.getTime()
  90                                .getTime();
  91         }
  92     }
  93     public void setCurrentDateFromText(CharSequence present) {
  94         final Calendar now = GregorianCalendar.getInstance();
  95         int year = now.get(GregorianCalendar.YEAR);
  96         int month = now.get(GregorianCalendar.MONTH);
  97         int day = now.get(GregorianCalendar.DAY_OF_MONTH);
  98
  99         Matcher m = reYMD.matcher(present);
 100         if (m.matches()) {
 101             year = Integer.parseInt(m.group(1));
 102             month = Integer.parseInt(m.group(2)) - 1;   // month is 0-based
 103             day = Integer.parseInt(m.group(3));
 104         }
 105         else {
 106             m = reMD.matcher(present);
 107             if (m.matches()) {
 108                 month = Integer.parseInt(m.group(1)) - 1;
 109                 day = Integer.parseInt(m.group(2));
 110             }
 111             else {
 112                 m = reD.matcher(present);
 113                 if (m.matches()) {
 114                     day = Integer.parseInt(m.group(1));
 115                 }
 116             }
 117         }
 118
 119         presentDate.set(year, month, day);
 120     }
 121     @NonNull
 122     @Override
 123     public Dialog onCreateDialog(Bundle savedInstanceState) {
 124         Dialog dpd = new Dialog(requireActivity());
 125         dpd.setContentView(R.layout.date_picker_view);
 126         dpd.setTitle(null);
 127         CalendarView cv = dpd.findViewById(R.id.calendarView);
 128         cv.setDate(presentDate.getTime()
 129                               .getTime());
 130
 131         cv.setMinDate(minDate);
 132         cv.setMaxDate(maxDate);
 133
 134         cv.setOnDateChangeListener(this);
 135
 136         return dpd;
 137     }
 138     @Override
 139     public void onSelectedDayChange(@NonNull CalendarView view, int year, int month,
 140                                     int dayOfMonth) {
 141         this.dismiss();
 142         if (onDatePickedListener != null)
 143             onDatePickedListener.onDatePicked(year, month, dayOfMonth);
 144     }
 145     public void setOnDatePickedListener(DatePickedListener listener) {
 146         onDatePickedListener = listener;
 147     }
 148     public interface DatePickedListener {
 149         void onDatePicked(int year, int month, int day);
 150     }
 151 }