X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fdata%2FTimeDifference.java;fp=src%2Ftim%2Fprune%2Fdata%2FTimeDifference.java;h=3fee2a1f912f19b0482c7185cf695e243c5e9241;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/data/TimeDifference.java b/src/tim/prune/data/TimeDifference.java
new file mode 100644
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+++ b/src/tim/prune/data/TimeDifference.java
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+package tim.prune.data;
+
+import tim.prune.I18nManager;
+
+/**
+ * Class to represent a time difference, like the difference between two Timestamp objects,
+ * and methods for representing and displaying them.
+ */
+public class TimeDifference
+{
+	private long _totalSeconds = 0L;
+	private int _seconds = 0;
+	private int _minutes = 0;
+	private int _hours = 0;
+	private String _description = null;
+
+
+	/**
+	 * Constructor using long
+	 * @param inNumSeconds number of seconds time difference
+	 */
+	public TimeDifference(long inNumSeconds)
+	{
+		_totalSeconds = inNumSeconds;
+		if (inNumSeconds < 0) {inNumSeconds = -inNumSeconds;}
+		_hours = (int) (inNumSeconds / 60 / 60);
+		_minutes = (int) (inNumSeconds / 60 - _hours * 60);
+		_seconds = (int) (inNumSeconds % 60);
+	}
+
+
+	/**
+	 * Constructor giving each field separately
+	 * @param inHours number of hours
+	 * @param inMinutes number of minutes
+	 * @param inSeconds number of seconds
+	 * @param inPositive true for positive time difference
+	 */
+	public TimeDifference(int inHours, int inMinutes, int inSeconds, boolean inPositive)
+	{
+		// Check for negative values?
+		_hours = inHours;
+		_minutes = inMinutes;
+		_seconds = inSeconds;
+		_totalSeconds = inHours * 3600L + inMinutes * 60L + inSeconds;
+		if (!inPositive) {_totalSeconds = -_totalSeconds;}
+	}
+
+
+	/**
+	 * @return total number of seconds time difference
+	 */
+	public long getTotalSeconds()
+	{
+		return _totalSeconds;
+	}
+
+	/**
+	 * @return number of hours
+	 */
+	public int getNumHours()
+	{
+		return _hours;
+	}
+
+	/**
+	 * @return number of minutes
+	 */
+	public int getNumMinutes()
+	{
+		return _minutes;
+	}
+
+	/**
+	 * @return number of seconds
+	 */
+	public int getNumSeconds()
+	{
+		return _seconds;
+	}
+
+	/**
+	 * @return true if time difference positive
+	 */
+	public boolean getIsPositive()
+	{
+		return _totalSeconds >= 0L;
+	}
+
+
+	/**
+	 * Build a String to describe the time duration
+	 * @return time as a string, days, hours, mins, secs as appropriate
+	 */
+	public String getDescription()
+	{
+		if (_description != null) {return _description;}
+		StringBuffer buffer = new StringBuffer();
+		boolean started = false;
+		// hours
+		if (_hours > 0)
+		{
+			buffer.append(_hours).append(' ').append(I18nManager.getText("display.range.time.hours"));
+			started = true;
+		}
+		// minutes
+		if (_minutes > 0)
+		{
+			if (started) {buffer.append(", ");}
+			else {started = true;}
+			buffer.append(_minutes).append(' ').append(I18nManager.getText("display.range.time.mins"));
+		}
+		// seconds
+		if (_seconds > 0 || !started)
+		{
+			if (started) {buffer.append(", ");}
+			buffer.append(_seconds).append(' ').append(I18nManager.getText("display.range.time.secs"));
+		}
+		_description = buffer.toString();
+		return _description;
+	}
+
+}