public static interface ILcdGXYViewLabelPlacer.ViewLabelPlacerCallback
ILcdGXYViewLabelPlacer. This callback is used to report that labels were updated by the view label placer or that the label placing process was ended. Methods of this callback interface should always be called on the AWT thread.
ILcdGXYViewLabelPlacerhas updated the labels. This method is typically used to signal that intermediate results are available. When this method is called, it doesn't necessarily mean that label placing has ended (e.g when asynchronous label placing is used). So it is possible that it is called multiple times before
ILcdGXYViewLabelPlacerhas finished updating the labels.