X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=tim%2Fprune%2Fdata%2FTimestampLocal.java;fp=tim%2Fprune%2Fdata%2FTimestampLocal.java;h=d4c909328262d526a9c499aa4f7723175d4b00e4;hp=0000000000000000000000000000000000000000;hb=92dad5df664287acb51728e9ea599f150765d34a;hpb=81843c3d8d0771bf00d0f26034a13aa515465c78

diff --git a/tim/prune/data/TimestampLocal.java b/tim/prune/data/TimestampLocal.java
new file mode 100644
index 0000000..d4c9093
--- /dev/null
+++ b/tim/prune/data/TimestampLocal.java
@@ -0,0 +1,104 @@
+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
+	 * @return formatted String
+	 */
+	@Override
+	protected String format(DateFormat inFormat, TimeZone inTimezone)
+	{
+		Calendar cal = getCalendar(inTimezone);
+		inFormat.setTimeZone(inTimezone);
+		return inFormat.format(cal.getTime());
+	}
+}