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package tim.prune.undo;
import tim.prune.I18nManager;
import tim.prune.data.DataPoint;
import tim.prune.data.TrackInfo;
/**
* Operation to undo a delete of a single point
*/
public class UndoDeletePoint implements UndoOperation
{
private int _pointIndex = -1;
private DataPoint _point = null;
private int _photoIndex = -1;
private boolean _segmentStart = false;
/**
* Constructor
* @param inPointIndex index number of point within track
* @param inPoint data point
* @param inPhotoIndex index number of photo within photo list
* @param inSegmentStart true if following track point starts new segment
*/
public UndoDeletePoint(int inPointIndex, DataPoint inPoint, int inPhotoIndex, boolean inSegmentStart)
{
_pointIndex = inPointIndex;
_point = inPoint;
_photoIndex = inPhotoIndex;
_segmentStart = inSegmentStart;
}
/**
* @return description of operation including point name if any
*/
public String getDescription()
{
String desc = I18nManager.getText("undo.deletepoint");
String pointName = _point.getWaypointName();
if (pointName != null && !pointName.equals(""))
desc = desc + " " + pointName;
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 point into track
if (!inTrackInfo.getTrack().insertPoint(_point, _pointIndex))
{
throw new UndoException(getDescription());
}
// Re-attach / Re-insert photo into list if necessary
if (_point.getPhoto() != null && _photoIndex > -1)
{
// Check if photo is still in list
if (!inTrackInfo.getPhotoList().contains(_point.getPhoto()))
{
// photo has been removed - need to reinsert
inTrackInfo.getPhotoList().addPhoto(_point.getPhoto(), _photoIndex);
}
// Ensure that photo is associated with point
_point.getPhoto().setDataPoint(_point);
}
// Restore previous status of following track point if necessary
if (!_segmentStart)
{
// Deletion of point can only set following point to true, so only need to set it back to false
DataPoint nextTrackPoint = inTrackInfo.getTrack().getNextTrackPoint(_pointIndex + 1);
if (nextTrackPoint != null) {
nextTrackPoint.setSegmentStart(false);
}
}
}
}
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