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         TextView date = Objects.requireNonNull(getActivity())
  58                                .findViewById(R.id.new_transaction_date);
  59
  60         CharSequence present = date.getText();
  61
  62         Matcher m = reYMD.matcher(present);
  63         if (m.matches()) {
  64             year = Integer.parseInt(m.group(1));
  65             month = Integer.parseInt(m.group(2)) - 1;   // month is 0-based
  66             day = Integer.parseInt(m.group(3));
  67         }
  68         else {
  69             m = reMD.matcher(present);
  70             if (m.matches()) {
  71                 month = Integer.parseInt(m.group(1)) - 1;
  72                 day = Integer.parseInt(m.group(2));
  73             }
  74             else {
  75                 m = reD.matcher(present);
  76                 if (m.matches()) {
  77                     day = Integer.parseInt(m.group(1));
  78                 }
  79             }
  80         }
  81
  82         c.set(year, month, day);
  83
  84         Dialog dpd = new Dialog(Objects.requireNonNull(getActivity()));
  85         dpd.setContentView(R.layout.date_picker_view);
  86         dpd.setTitle(null);
  87         CalendarView cv = dpd.findViewById(R.id.calendarView);
  88         cv.setDate(c.getTime()
  89                     .getTime());
  90
  91         if (futureDates == MobileLedgerProfile.FutureDates.All) {
  92             cv.setMaxDate(Long.MAX_VALUE);
  93         }
  94         else {
  95             switch (futureDates) {
  96                 case None:
  97                     // already there
  98                     break;
  99                 case OneMonth:
 100                     c.add(Calendar.MONTH, 1);
 101                     break;
 102                 case TwoMonths:
 103                     c.add(Calendar.MONTH, 2);
 104                     break;
 105                 case ThreeMonths:
 106                     c.add(Calendar.MONTH, 3);
 107                     break;
 108                 case SixMonths:
 109                     c.add(Calendar.MONTH, 6);
 110                     break;
 111                 case OneYear:
 112                     c.add(Calendar.YEAR, 1);
 113                     break;
 114             }
 115             cv.setMaxDate(c.getTime()
 116                            .getTime());
 117         }
 118
 119         cv.setOnDateChangeListener(this);
 120
 121         return dpd;
 122     }
 123     @Override
 124     public void onSelectedDayChange(@NonNull CalendarView view, int year, int month,
 125                                     int dayOfMonth) {
 126         this.dismiss();
 127         if (onDatePickedListener != null)
 128             onDatePickedListener.onDatePicked(year, month, dayOfMonth);
 129     }
 130     public void setOnDatePickedListener(DatePickedListener listener) {
 131         onDatePickedListener = listener;
 132     }
 133     public interface DatePickedListener {
 134         void onDatePicked(int year, int month, int day);
 135     }
 136 }