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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 a load photos operation
*/
public class UndoLoadPhotos implements UndoOperation
{
private int _numPhotos = -1;
private int _numPoints = -1;
/**
* Constructor
* @param inNumPhotos number of photos loaded
* @param inNumPoints number of points loaded
*/
public UndoLoadPhotos(int inNumPhotos, int inNumPoints)
{
_numPhotos = inNumPhotos;
_numPoints = inNumPoints;
}
/**
* @return description of operation including number of photos loaded
*/
public String getDescription()
{
String desc = I18nManager.getText("undo.loadphotos");
if (_numPhotos > 0)
desc = desc + " (" + _numPhotos + ")";
return desc;
}
/**
* Perform the undo operation on the given Track
* Delete both track points and Photo objects
* @param inTrackInfo TrackInfo object on which to perform the operation
*/
public void performUndo(TrackInfo inTrackInfo) throws UndoException
{
int cropIndex;
// crop track to previous size
if (_numPoints > 0)
{
cropIndex = inTrackInfo.getTrack().getNumPoints() - _numPoints;
inTrackInfo.getTrack().cropTo(cropIndex);
}
else
{
// Loop through the points (if any) and detach them
for (int i=0; i<_numPhotos; i++)
{
Photo photo = inTrackInfo.getPhotoList().getPhoto(inTrackInfo.getPhotoList().getNumPhotos() - 1 - i);
if (photo.isConnected()) {
DataPoint point = photo.getDataPoint();
if (point != null) {point.setPhoto(null);}
}
}
}
// crop photo list to previous size
cropIndex = inTrackInfo.getPhotoList().getNumPhotos() - _numPhotos;
inTrackInfo.getPhotoList().cropTo(cropIndex);
// clear selection
inTrackInfo.getSelection().clearAll();
}
}
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