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package tim.prune.undo;
import tim.prune.I18nManager;
import tim.prune.UpdateMessageBroker;
import tim.prune.data.DataPoint;
import tim.prune.data.Photo;
import tim.prune.data.TrackInfo;
/**
* Operation to undo a delete of a single photo, either with or without point
*/
public class UndoDeletePhoto implements UndoOperation
{
private int _photoIndex = -1;
private Photo _photo = null;
private int _pointIndex = -1;
private DataPoint _point = null;
/**
* Constructor
* @param inPhoto photo
* @param inPhotoIndex index number of photo within photo list
* @param inPoint data point
* @param inPointIndex index number of point within track
*/
public UndoDeletePhoto(Photo inPhoto, int inPhotoIndex, DataPoint inPoint, int inPointIndex)
{
_photo = inPhoto;
_photoIndex = inPhotoIndex;
_point = inPoint;
_pointIndex = inPointIndex;
}
/**
* @return description of operation including photo name
*/
public String getDescription()
{
String desc = I18nManager.getText("undo.deletephoto") + " " + _photo.getFile().getName();
return desc;
}
/**
* 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 photo
inTrackInfo.getPhotoList().addPhoto(_photo, _photoIndex);
// if there's a point to restore, restore it
if (_point != null)
{
if (!inTrackInfo.getTrack().insertPoint(_point, _pointIndex))
{
throw new UndoException(getDescription());
}
}
else
{
// update needed if not already triggered by track update
UpdateMessageBroker.informSubscribers();
}
// Ensure that photo is associated with point and vice versa
_photo.setDataPoint(_point);
if (_point != null)
{
_point.setPhoto(_photo);
}
}
}
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