start the new transaction interface

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / DatePickerFragment.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/DatePickerFragment.java b/app/src/main/java/net/ktnx/mobileledger/DatePickerFragment.java
new file mode 100644 (file)
index 0000000..4ea1f8b
--- /dev/null
+++ b/app/src/main/java/net/ktnx/mobileledger/DatePickerFragment.java
@@ -0,0 +1,64 @@
+package net.ktnx.mobileledger;
+
+import android.annotation.TargetApi;
+import android.app.DatePickerDialog;
+import android.app.Dialog;
+import android.os.Build;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v7.app.AppCompatDialogFragment;
+import android.widget.DatePicker;
+import android.widget.TextView;
+
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class DatePickerFragment extends AppCompatDialogFragment
+implements DatePickerDialog.OnDateSetListener
+{
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final Calendar c = GregorianCalendar.getInstance();
+        int year = c.get(GregorianCalendar.YEAR);
+        int month = c.get(GregorianCalendar.MONTH);
+        int day = c.get(GregorianCalendar.DAY_OF_MONTH);
+        TextView date = getActivity().findViewById(R.id.new_transaction_date);
+
+        CharSequence present = date.getText();
+
+        Pattern re_mon_day = Pattern.compile("^\\s*(\\d+)\\s*/\\s*(\\d+)\\s*$");
+        Matcher m_mon_day = re_mon_day.matcher(present);
+
+        if (m_mon_day.matches()) {
+            month = Integer.parseInt(m_mon_day.group(0));
+            day = Integer.parseInt(m_mon_day.group(1));
+        }
+        else {
+            Pattern re_day = Pattern.compile("^\\s*(\\d{1,2})\\s*$");
+            Matcher m_day = re_day.matcher(present);
+            if (m_day.matches()) {
+                day = Integer.parseInt(m_day.group(0));
+            }
+        }
+
+        return new DatePickerDialog(Objects.requireNonNull(getActivity()), this, year, month, day);
+    }
+
+    @TargetApi(Build.VERSION_CODES.O)
+    public void onDateSet(DatePicker view, int year, int month, int day) {
+        TextView date = getActivity().findViewById(R.id.new_transaction_date);
+
+        final Calendar c = GregorianCalendar.getInstance();
+        if ( c.get(GregorianCalendar.YEAR) == year && c.get(GregorianCalendar.MONTH) == month) {
+            date.setText(String.format(Locale.US, "%d", day));
+        }
+        else {
+            date.setText(String.format(Locale.US, "%d/%d", month, day));
+        }
+    }
+}