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package tim.prune.undo;
import tim.prune.I18nManager;
import tim.prune.data.DataPoint;
import tim.prune.data.Photo;
import tim.prune.data.TrackInfo;
/**
* Operation to undo an auto-correlation of photos with points
*/
public class UndoCorrelatePhotos implements UndoOperation
{
private DataPoint[] _contents = null;
private DataPoint[] _photoPoints = null;
private int _numPhotosCorrelated = -1;
/**
* Constructor
* @param inTrackInfo track information
*/
public UndoCorrelatePhotos(TrackInfo inTrackInfo)
{
// Copy track contents
_contents = inTrackInfo.getTrack().cloneContents();
// Copy points associated with photos before correlation
int numPhotos = inTrackInfo.getPhotoList().getNumPhotos();
_photoPoints = new DataPoint[numPhotos];
for (int i=0; i<numPhotos; i++) {
_photoPoints[i] = inTrackInfo.getPhotoList().getPhoto(i).getDataPoint();
}
}
/**
* @param inNumCorrelated number of photos correlated
*/
public void setNumPhotosCorrelated(int inNumCorrelated)
{
_numPhotosCorrelated = inNumCorrelated;
}
/**
* @return description of operation including parameters
*/
public String getDescription()
{
return I18nManager.getText("undo.correlatephotos") + " (" + _numPhotosCorrelated + ")";
}
/**
* Perform the undo operation on the given Track
* @param inTrackInfo TrackInfo object on which to perform the operation
*/
public void performUndo(TrackInfo inTrackInfo) throws UndoException
{
// restore track to previous values
inTrackInfo.getTrack().replaceContents(_contents);
// restore photo association
for (int i=0; i<_photoPoints.length; i++)
{
Photo photo = inTrackInfo.getPhotoList().getPhoto(i);
// Only need to look at connected photos, since correlation wouldn't disconnect
if (photo.getCurrentStatus() == Photo.Status.CONNECTED)
{
DataPoint prevPoint = _photoPoints[i];
DataPoint currPoint = photo.getDataPoint();
photo.setDataPoint(prevPoint);
if (currPoint != null) {
currPoint.setPhoto(null); // disconnect
}
if (prevPoint != null) {
prevPoint.setPhoto(photo); // reconnect to prev point
}
}
}
// clear selection
inTrackInfo.getSelection().clearAll();
}
}
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