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package tim.prune.cmd;
import tim.prune.data.Timestamp;
/**
* Reference to a point used for sorting, to calculate the new indices
*/
public class PointReference implements Comparable<PointReference>
{
private final int _originalIndex;
private final String _name;
private final Timestamp _timestamp;
private final int _desiredIndex;
/**
* Constructor
* @param inOriginalIndex original index in track
* @param inName waypoint name or media filename, if sorting by name
* @param inTimestamp point timestamp or media timestamp, if sorting by time
*/
public PointReference(int inOriginalIndex, String inName, Timestamp inTimestamp)
{
_originalIndex = inOriginalIndex;
_name = inName;
_timestamp = inTimestamp;
_desiredIndex = 0;
}
/**
* Constructor
* @param inOriginalIndex original index in track
* @param inDesiredIndex artificial sort index
*/
public PointReference(int inOriginalIndex, int inDesiredIndex)
{
_originalIndex = inOriginalIndex;
_name = null;
_timestamp = null;
_desiredIndex = inDesiredIndex;
}
/** @return original index */
public int getIndex() {
return _originalIndex;
}
@Override
public int compareTo(PointReference other)
{
int compareVal = _desiredIndex - other._desiredIndex;
if (compareVal == 0)
{
compareVal = compareNames(other);
if (compareVal == 0)
{
compareVal = compareTimes(other);
if (compareVal == 0) {
compareVal = _originalIndex - other._originalIndex;
}
}
}
return compareVal;
}
/**
* Compare this reference's name with the other one
* @param other other point reference
* @return -1, 0 or 1 depending on ordering
*/
private int compareNames(PointReference other)
{
if (_name == null && other._name == null) {
return 0;
}
if (_name == null || other._name == null) {
return _name == null ? 1 : -1;
}
return _name.compareTo(other._name);
}
/**
* Compare this reference's timestamp with the other one
* @param other other point reference
* @return -1, 0 or 1 depending on ordering
*/
private int compareTimes(PointReference other)
{
if (_timestamp == null && other._timestamp == null) {
return 0;
}
if (_timestamp == null || other._timestamp == null) {
return _timestamp == null ? 1 : -1;
}
final long diff = _timestamp.getMillisecondsSince(other._timestamp);
return Long.compare(diff, 0L);
}
}
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