Spinner 2 : Spinner « Swing JFC « Java

1. Java
2. Swing JFC
3. Spinner

Spinner 2

   
/*
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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