test.java

《Java2图形设计卷II：Swing》配套光盘源码

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

public class Test extends JFrame {
	JTable table = new JTable(
		new AbstractTableModel() {
			public int getRowCount() { return 10; }
			public int getColumnCount() { return 10; }

			public Object getValueAt(int row, int col) {
				return "(" + Integer.toString(row) + "," +
						 	 Integer.toString(col) + ")";
			}
		});

	public Test() {
		Container cp = getContentPane();
		cp.add(new JScrollPane(table), BorderLayout.CENTER);
		cp.add(new ControlPanel(), BorderLayout.NORTH);
	}
	class ControlPanel extends JPanel {
		private JSlider slider = new JSlider(
						JSlider.HORIZONTAL,0,100,
						table.getColumnModel().getColumnMargin());

		private JLabel label = new JLabel();

		public ControlPanel() {
			add(new JLabel("Column Margin:"));
			add(slider);
			add(label);

			label.setText(
				Integer.toString(
					table.getColumnModel().getColumnMargin()));

			slider.addChangeListener(new ChangeListener() {
				public void stateChanged(ChangeEvent e) {
					table.getColumnModel().setColumnMargin(
										   slider.getValue());
				}
			});
			table.getColumnModel().addColumnModelListener(
								new TableColumnModelListener() {
				public void columnMarginChanged(ChangeEvent e) {
					TableColumnModel m = table.getColumnModel();
					label.setText(
						Integer.toString(m.getColumnMargin()));
				}

				// unfortunately, Swing does not have many
				// event adapter classes ...
				public void columnAdded(TableColumnModelEvent e) {
				}
				public void columnMoved(TableColumnModelEvent e) {
				}
				public void columnRemoved(
										TableColumnModelEvent e) {
				}
				public void columnSelectionChanged(
										   ListSelectionEvent e) {
				}
			});
		}
	}
	public static void main(String args[]) {
		GJApp.launch(new Test(),
						"Column Margins",150,150,500,200); 
	}
}
class GJApp extends WindowAdapter {
	static private JPanel statusArea = new JPanel();
	static private JLabel status = new JLabel(" ");
	static private ResourceBundle resources;

	public static void launch(final JFrame f, String title,
							  final int x, final int y, 
							  final int w, int h) {
		launch(f,title,x,y,w,h,null);	
	}
	public static void launch(final JFrame f, String title,
							  final int x, final int y, 
							  final int w, int h,
							  String propertiesFilename) {
		f.setTitle(title);
		f.setBounds(x,y,w,h);
		f.setVisible(true);

		statusArea.setBorder(BorderFactory.createEtchedBorder());
		statusArea.setLayout(new FlowLayout(FlowLayout.LEFT,0,0));
		statusArea.add(status);
		status.setHorizontalAlignment(JLabel.LEFT);

		f.setDefaultCloseOperation(
							WindowConstants.DISPOSE_ON_CLOSE);

		if(propertiesFilename != null) {
			resources = ResourceBundle.getBundle(
						propertiesFilename, Locale.getDefault());
		}

		f.addWindowListener(new WindowAdapter() {
			public void windowClosed(WindowEvent e) {
				System.exit(0);
			}
		});
	}
	static public JPanel getStatusArea() {
		return statusArea;
	}
	static public void showStatus(String s) {
		status.setText(s);
	}
	static Object getResource(String key) {
		if(resources != null) {
			return resources.getString(key);
		}
		return null;
	}
}