EthiopianDateWidget.java

package org.commcare.views.widgets;

import android.content.Context;

import org.javarosa.form.api.FormEntryPrompt;
import org.javarosa.xform.util.CalendarUtils;
import org.javarosa.xform.util.UniversalDate;
import org.joda.time.Chronology;
import org.joda.time.DateTime;
import org.joda.time.chrono.EthiopicChronology;

/**
 * Ethiopian Date Widget.
 *
 * @author Alex Little (alex@alexlittle.net), Richard Lu
 */
public class EthiopianDateWidget extends AbstractUniversalDateWidget {

    private static final Chronology CHRON_ETH = EthiopicChronology.getInstance();

    public EthiopianDateWidget(Context context, FormEntryPrompt prompt) {
        super(context, prompt);
    }

    private UniversalDate constructUniversalDate(DateTime dt) {
        return new UniversalDate(
                dt.getYear(),
                dt.getMonthOfYear(),
                dt.getDayOfMonth(),
                dt.getMillis()
        );
    }

    @Override
    protected UniversalDate decrementMonth(long millisFromJavaEpoch) {
        DateTime dt = new DateTime(millisFromJavaEpoch)
                .withChronology(CHRON_ETH)
                .minusMonths(1);
        return constructUniversalDate(dt);
    }

    @Override
    protected UniversalDate decrementYear(long millisFromJavaEpoch) {
        DateTime dt = new DateTime(millisFromJavaEpoch)
                .withChronology(CHRON_ETH)
                .minusYears(1);
        return constructUniversalDate(dt);
    }

    @Override
    protected UniversalDate fromMillis(long millisFromJavaEpoch) {
        DateTime dt = new DateTime(millisFromJavaEpoch)
                .withChronology(CHRON_ETH);
        return constructUniversalDate(dt);
    }

    @Override
    protected String[] getMonthsArray() {
        return CalendarUtils.getMonthsArray("ethiopian_months");
    }

    @Override
    protected UniversalDate incrementMonth(long millisFromJavaEpoch) {
        DateTime dt = new DateTime(millisFromJavaEpoch)
                .withChronology(CHRON_ETH)
                .plusMonths(1);
        return constructUniversalDate(dt);
    }

    @Override
    protected UniversalDate incrementYear(long millisFromJavaEpoch) {
        DateTime dt = new DateTime(millisFromJavaEpoch)
                .withChronology(CHRON_ETH)
                .plusYears(1);
        return constructUniversalDate(dt);
    }

    @Override
    protected long toMillisFromJavaEpoch(int year, int month, int day) {
        DateTime dt = new DateTime(CHRON_ETH)
                .withYear(year)
                .withMonthOfYear(month)
                .withDayOfMonth(day);
        return dt.getMillis();
    }
}