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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 the connection of a photo to a point
*/
public class UndoConnectPhoto implements UndoOperation
{
private DataPoint _point = null;
private String _filename = null;
/**
* Constructor
* @param inPoint data point
* @param inFilename filename of photo
*/
public UndoConnectPhoto(DataPoint inPoint, String inFilename)
{
_point = inPoint;
_filename = inFilename;
}
/**
* @return description of operation including photo filename
*/
public String getDescription()
{
String desc = I18nManager.getText("undo.connectphoto") + " " + _filename;
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
{
// Disconnect again
Photo photo = _point.getPhoto();
if (photo != null)
{
_point.setPhoto(null);
photo.setDataPoint(null);
// inform subscribers
UpdateMessageBroker.informSubscribers();
}
else
{
// throw exception if failed
throw new UndoException(getDescription());
}
}
}
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