com.enonic.cms.business.timezone.TimeZoneXmlCreator.java Source code

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Here is the source code for com.enonic.cms.business.timezone.TimeZoneXmlCreator.java

Source

/*
 * Copyright 2000-2011 Enonic AS
 * http://www.enonic.com/license
 */
package com.enonic.cms.business.timezone;

import java.util.Collection;

import org.jdom.Document;
import org.jdom.Element;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.Period;

/**
 * Sep 8, 2009
 */
public class TimeZoneXmlCreator {
    private DateTime now;

    public TimeZoneXmlCreator(DateTime now) {
        this.now = now;
    }

    public Document createTimeZonesDocument(final Collection<DateTimeZone> timeZones) {
        if (timeZones == null) {
            throw new IllegalArgumentException("timeZones cannot be null");
        }

        Element timeZonesEl = new Element("time-zones");
        for (DateTimeZone timeZone : timeZones) {
            timeZonesEl.addContent(doCreateTimeZoneElement(timeZone));
        }
        return new Document(timeZonesEl);
    }

    private Element doCreateTimeZoneElement(DateTimeZone timeZone) {

        Element timeZoneEl = new Element("time-zone");
        timeZoneEl.setAttribute("ID", timeZone.getID());
        timeZoneEl.addContent(new Element("display-name").setText(timeZone.getID()));

        DateTime localTime = now.plus(timeZone.getOffsetFromLocal(now.getMillis()));
        Period offsetPeriod = new Period(now, localTime);
        //timeZoneEl.addContent( new Element( "hours-from-utc" ).setText( String.valueOf( offsetPeriod.getHours() ) ) );
        timeZoneEl.addContent(
                new Element("hours-from-utc-as-human-readable").setText(getHoursAsHumanReadable(offsetPeriod)));

        return timeZoneEl;
    }

    private String getHoursAsHumanReadable(Period offsetPeriod) {
        final StringBuffer s = new StringBuffer();
        if (offsetPeriod.getMinutes() < 0) {
            s.append("-");
        } else {
            s.append("+");
        }

        final int hours = offsetPeriod.getHours();

        if (hours < 10 && hours > (-10)) {
            s.append("0");
        }
        s.append(Math.abs(hours));
        s.append(":");

        final int minutes = offsetPeriod.getMinutes();
        if (minutes < 10) {
            s.append("0");
        }
        s.append(minutes);
        return s.toString();
    }
}