public void actionPerformed(ActionEvent arg0) {
Fractal fractal = view.getFractal();
if (fractal.getOrder() > 0) {
fractal.setOrder(fractal.getOrder() - 1);
}
view.updateDrawing();
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("Fractal");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SpringLayout layout = new SpringLayout();
frame.setLayout(layout);
Orientation nw = new Orientation();
nw.setOffset(0, 0);
Orientation sw = new Orientation();
sw.setOffset(0, regionSize);
Orientation se = new Orientation();
se.setOffset(regionSize, regionSize);
Fractal fractal = new Fractal(regionSize);
fractal.setOrientations(nw, sw, se);
layout.putConstraint(SpringLayout.WEST, fractal, 5, SpringLayout.WEST, frame.getContentPane());
layout.putConstraint(
SpringLayout.NORTH, fractal, 5, SpringLayout.NORTH, frame.getContentPane());
layout.putConstraint(SpringLayout.WEST, nw, 5, SpringLayout.EAST, fractal);
layout.putConstraint(SpringLayout.NORTH, nw, 0, SpringLayout.NORTH, fractal);
layout.putConstraint(SpringLayout.NORTH, sw, 5, SpringLayout.SOUTH, nw);
layout.putConstraint(SpringLayout.WEST, sw, 0, SpringLayout.WEST, nw);
layout.putConstraint(SpringLayout.NORTH, se, 5, SpringLayout.SOUTH, nw);
layout.putConstraint(SpringLayout.WEST, se, 5, SpringLayout.EAST, sw);
layout.putConstraint(
SpringLayout.SOUTH, frame.getContentPane(), 5, SpringLayout.SOUTH, fractal);
layout.putConstraint(SpringLayout.EAST, frame.getContentPane(), 5, SpringLayout.EAST, se);
frame.add(nw);
frame.add(sw);
frame.add(se);
frame.add(fractal);
frame.setResizable(false);
frame.pack();
frame.setVisible(true);
}