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package tim.prune.data;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.TimeZone;
/**
* Class to hold a timestamp based on a local timezone, for example
* from a camera or audio recorder.
* When the selected timezone changes, this timestamp will keep its
* date and time but the numerical value will change accordingly.
*/
public class TimestampLocal extends Timestamp
{
private boolean _valid = false;
private int _year=0, _month=0, _day=0;
private int _hour=0, _minute=0, _second=0;
/**
* Constructor giving each field value individually
* @param inYear year
* @param inMonth month, beginning with 1
* @param inDay day of month, beginning with 1
* @param inHour hour of day, 0-24
* @param inMinute minute
* @param inSecond seconds
*/
public TimestampLocal(int inYear, int inMonth, int inDay, int inHour, int inMinute, int inSecond)
{
_valid = inYear > 0 && inYear < 3000
&& inMonth > 0 && inMonth < 13
&& inDay > 0 && inDay < 32
&& inHour >= 0 && inHour < 24
&& inMinute >= 0 && inMinute < 60
&& inSecond >= 0 && inSecond < 60;
if (_valid)
{
_year = inYear;
_month = inMonth;
_day = inDay;
_hour = inHour;
_minute = inMinute;
_second = inSecond;
}
}
/** @return true if valid */
public boolean isValid()
{
return _valid;
}
@Override
public Calendar getCalendar(TimeZone inZone)
{
Calendar cal = Calendar.getInstance();
if (inZone != null) {
cal.setTimeZone(inZone);
}
cal.set(Calendar.YEAR, _year);
cal.set(Calendar.MONTH, _month - 1);
cal.set(Calendar.DAY_OF_MONTH, _day);
cal.set(Calendar.HOUR_OF_DAY, _hour);
cal.set(Calendar.MINUTE, _minute);
cal.set(Calendar.SECOND, _second);
cal.set(Calendar.MILLISECOND, 0);
return cal;
}
@Override
public long getMilliseconds(TimeZone inZone)
{
return getCalendar(inZone).getTimeInMillis();
}
@Override
public void addOffsetSeconds(long inOffset)
{
System.err.println("Local timestamps don't support offsets.");
}
@Override
protected boolean hasMilliseconds()
{
return false;
}
/**
* Utility method for formatting dates / times
* @param inFormat formatter object
* @param inTimezone timezone to use, or null
* @return formatted String
*/
@Override
protected String format(DateFormat inFormat, TimeZone inTimezone)
{
Calendar cal = getCalendar(inTimezone);
if (inTimezone != null)
{
inFormat.setTimeZone(inTimezone);
}
return inFormat.format(cal.getTime());
}
}
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