source: src/main/java/genius/gui/panels/SpinnerPanel.java

package genius.gui.panels;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSpinner;

/**
 * Spinner but with text label.
 *
 */
@SuppressWarnings("serial")
public class SpinnerPanel extends JPanel {

        private final JSpinner spinner;
        private final NumberModel model;
        private final JLabel label;

        public SpinnerPanel(final String labeltext, final NumberModel model) {
                this.model = model;
                setLayout(new BorderLayout());
                label = new JLabel(labeltext);
                add(label, BorderLayout.WEST);
                label.setPreferredSize(new Dimension(120, 10));

                spinner = new JSpinner(model.getSpinnerModel());
                spinner.setMaximumSize(new Dimension(300, 30));
                add(spinner, BorderLayout.CENTER);
                // aligns the RIGHT side of the panel with the center of the parent.
                // This limits the total width
                setAlignmentX(Component.RIGHT_ALIGNMENT);
                setMaximumSize(new Dimension(3000000, 30));

                model.addListener(data -> enable1());
                enable1();

        }

        private void enable1() {
                boolean enabled = !model.isLocked();
                spinner.setEnabled(enabled);
                label.setEnabled(enabled);
        }
}