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package tim.prune.undo;
import tim.prune.I18nManager;
import tim.prune.data.DataPoint;
import tim.prune.data.PhotoList;
import tim.prune.data.TrackInfo;
/**
* Operation to undo a delete of a range of points
*/
public class UndoDeleteRange implements UndoOperation
{
private int _startIndex = -1;
private DataPoint[] _points = null;
private PhotoList _photoList = null;
private DataPoint _nextTrackPoint = null;
private boolean _segmentStart = false;
/**
* Constructor
* @param inTrackInfo track info object
*/
public UndoDeleteRange(TrackInfo inTrackInfo)
{
_startIndex = inTrackInfo.getSelection().getStart();
_points = inTrackInfo.cloneSelectedRange();
_photoList = inTrackInfo.getPhotoList().cloneList();
// Save segment flag of following track point
_nextTrackPoint = inTrackInfo.getTrack().getNextTrackPoint(_startIndex + _points.length);
if (_nextTrackPoint != null) {
_segmentStart = _nextTrackPoint.getSegmentStart();
}
}
/**
* @return description of operation including range length
*/
public String getDescription()
{
return I18nManager.getText("undo.deleterange")
+ " (" + _points.length + ")";
}
/**
* Perform the undo operation on the given Track
* @param inTrackInfo TrackInfo object on which to perform the operation
*/
public void performUndo(TrackInfo inTrackInfo)
{
// restore photos to how they were before
inTrackInfo.getPhotoList().restore(_photoList);
// reconnect photos to points
for (int i=0; i<_points.length; i++)
{
DataPoint point = _points[i];
if (point != null && point.getPhoto() != null)
{
point.getPhoto().setDataPoint(point);
}
}
// restore point array into track
inTrackInfo.getTrack().insertRange(_points, _startIndex);
// Restore segment flag of following track point
if (_nextTrackPoint != null) {
_nextTrackPoint.setSegmentStart(_segmentStart);
}
}
}
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