/*------------------------------------------------------------------*/
public void itemStateChanged(ItemEvent ie) {
if (choice.getSelectedCheckbox().getLabel().equals("Gradient Magnitude")) {
operation = Differentials_.GRADIENT_MAGNITUDE;
} else if (choice.getSelectedCheckbox().getLabel().equals("Gradient Direction")) {
operation = Differentials_.GRADIENT_DIRECTION;
} else if (choice.getSelectedCheckbox().getLabel().equals("Laplacian")) {
operation = Differentials_.LAPLACIAN;
} else if (choice.getSelectedCheckbox().getLabel().equals("Largest Hessian")) {
operation = Differentials_.LARGEST_HESSIAN;
} else if (choice.getSelectedCheckbox().getLabel().equals("Smallest Hessian")) {
operation = Differentials_.SMALLEST_HESSIAN;
} else if (choice.getSelectedCheckbox().getLabel().equals("Hessian Orientation")) {
operation = Differentials_.HESSIAN_ORIENTATION;
} else {
cancel = true;
operation = Differentials_.LAPLACIAN;
IJ.error("Unexpected checkbox ID");
this.setVisible(false);
}
repaint();
} /* end itemStateChanged */
