gridbagtest.java

此文档包含有AOP

package test.xml;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * This program shows how to use an XML file to describe a gridbag layout
 * 
 */
public class GridBagTest {
	public static void main(String[] args) {
//		String path = System.getProperty("");
		String filename = args.length == 0 ? "src/test/xml/fontdialog.xml"
				: args[0];
		JFrame frame = new FontFrame(filename);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}

/**
 * This frame contains a font selection dialog that is described by an XML file.
 * 
 * @param filename
 *            the file containing the user interface components for the dialog.
 */
class FontFrame extends JFrame {
	public FontFrame(String filename) {
		setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
		setTitle("GridBagTest");

		gridbag = new GridBagPane(filename);
		add(gridbag);

		face = (JComboBox) gridbag.get("face");
		size = (JComboBox) gridbag.get("size");
		bold = (JCheckBox) gridbag.get("bold");
		italic = (JCheckBox) gridbag.get("italic");

		face.setModel(new DefaultComboBoxModel(new Object[] { "Serif",
				"SansSerif", "Monospaced", "Dialog", "DialogInput" }));

		size.setModel(new DefaultComboBoxModel(new Object[] { "8", "10", "12",
				"15", "18", "24", "36", "48" }));

		ActionListener listener = new ActionListener() {
			public void actionPerformed(ActionEvent event) {
				setSample();
			}
		};

		face.addActionListener(listener);
		size.addActionListener(listener);
		bold.addActionListener(listener);
		italic.addActionListener(listener);

		setSample();
	}

	/**
	 * This method sets the text sample to the selected font.
	 */
	public void setSample() {
		String fontFace = (String) face.getSelectedItem();
		int fontSize = Integer.parseInt((String) size.getSelectedItem());
		JTextArea sample = (JTextArea) gridbag.get("sample");
		int fontStyle = (bold.isSelected() ? Font.BOLD : 0)
				+ (italic.isSelected() ? Font.ITALIC : 0);

		sample.setFont(new Font(fontFace, fontStyle, fontSize));
		sample.repaint();
	}

	private GridBagPane gridbag;
	private JComboBox face;
	private JComboBox size;
	private JCheckBox bold;
	private JCheckBox italic;
	private static final int DEFAULT_WIDTH = 400;
	private static final int DEFAULT_HEIGHT = 400;
}