www.pudn.com > tame.rar > MultiSpanCellTableExample.java

/* (swing1.1beta3) jfc#96 */
package tame.examples;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.SwingConstants;

import tame.table.AttributiveCellTableModel;
import tame.table.CellSpan;
import tame.table.MultiSpanCellTable;

/**
 
 Exception in thread "main" java.lang.NullPointerException
 at javax.swing.table.DefaultTableModel.getColumnCount(DefaultTableModel.java:575)
 at javax.swing.table.DefaultTableModel.justifyRows(DefaultTableModel.java:242)
 at javax.swing.table.DefaultTableModel.setNumRows(DefaultTableModel.java:298)
 at tame.table.AttributiveCellTableModel.(AttributiveCellTableModel.java:32)
 
 @author Nobuo Tamemasa
 @version 1.0 11/26/98
 */
public class MultiSpanCellTableExample extends JFrame {

	MultiSpanCellTableExample() {
		super("Multi-Span Cell Example");

		//    AttributiveCellTableModel ml = new AttributiveCellTableModel(10,6);

		AttributiveCellTableModel ml = new AttributiveCellTableModel(10, 6) {
			public Object getValueAt(int row, int col) {
				return "" + row + "," + col;
			}
		};

		final CellSpan cellAtt = (CellSpan) ml.getCellAttribute();
		final MultiSpanCellTable table = new MultiSpanCellTable(ml);
		JScrollPane scroll = new JScrollPane(table);

		JButton b_one = new JButton("Combine");
		b_one.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				int[] columns = table.getSelectedColumns();
				int[] rows = table.getSelectedRows();
				cellAtt.combine(rows, columns);
				table.clearSelection();
				table.revalidate();
				table.repaint();
			}
		});
		JButton b_split = new JButton("Split");
		b_split.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				int column = table.getSelectedColumn();
				int row = table.getSelectedRow();
				cellAtt.split(row, column);
				table.clearSelection();
				table.revalidate();
				table.repaint();
			}
		});
		JPanel p_buttons = new JPanel();
		p_buttons.setLayout(new GridLayout(2, 1));
		p_buttons.add(b_one);
		p_buttons.add(b_split);

		Box box = new Box(BoxLayout.X_AXIS);
		box.add(scroll);
		box.add(new JSeparator(SwingConstants.HORIZONTAL));
		box.add(p_buttons);
		getContentPane().add(box);
		setSize(400, 200);
		setVisible(true);
	}

	public static void main(String[] args) {
		MultiSpanCellTableExample frame = new MultiSpanCellTableExample();
		frame.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
	}
}