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/*
Swing, Second Edition
by Matthew Robinson, Pavel Vorobiev
*/
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.plaf.basic.BasicArrowButton;
public class Spinner extends JPanel {
private int m_orientation = SwingConstants.VERTICAL;
private BasicArrowButton m_incrementButton;
private BasicArrowButton m_decrementButton;
public Spinner() {
createComponents();
}
public Spinner(int orientation) {
m_orientation = orientation;
createComponents();
}
public void setEnabled(boolean enable) {
m_incrementButton.setEnabled(enable);
m_decrementButton.setEnabled(enable);
}
public boolean isEnabled() {
return (m_incrementButton.isEnabled() && m_decrementButton.isEnabled());
}
protected void createComponents() {
if (m_orientation == SwingConstants.VERTICAL) {
setLayout(new GridLayout(2, 1));
m_incrementButton = new BasicArrowButton(SwingConstants.NORTH);
m_decrementButton = new BasicArrowButton(SwingConstants.SOUTH);
add(m_incrementButton);
add(m_decrementButton);
} else if (m_orientation == SwingConstants.HORIZONTAL) {
setLayout(new GridLayout(1, 2));
m_incrementButton = new BasicArrowButton(SwingConstants.EAST);
m_decrementButton = new BasicArrowButton(SwingConstants.WEST);
add(m_decrementButton);
add(m_incrementButton);
}
}
public JButton getIncrementButton() {
return (m_incrementButton);
}
public JButton getDecrementButton() {
return (m_decrementButton);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
JPanel panel = (JPanel) frame.getContentPane();
panel.setLayout(new BorderLayout());
JTextField field = new JTextField(20);
Spinner spinner = new Spinner();
panel.add(field, "Center");
panel.add(spinner, "East");
Dimension dim = frame.getToolkit().getScreenSize();
frame.setLocation(dim.width / 2 - frame.getWidth() / 2, dim.height / 2
- frame.getHeight() / 2);
frame.pack();
frame.show();
}
}
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