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

/* (swing1.1) (swing#1356,#1454) */
package tame.examples;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JViewport;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;

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

/**
 *   ----------------------------------------------
 *  |         SNo.        |
 *   ----------------------------------------------
 *  |          |     1    |
 *  |   Name   |-----------------------------------
 *  |          |     2    |
 *   ----------------------------------------------
 *  |          |     1    |
 *  |          |-----------------------------------
 *  | Language |     2    |
 *  |          |-----------------------------------
 *  |          |     3    |
 *   ----------------------------------------------

..
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.newRowsAdded(DefaultTableModel.java:262)
        at tame.table.AttributiveCellTableModel.setDataVector(AttributiveCellTableModel.java:65)

@author Nobuo Tamemasa
@version 1.0 03/06/99
*/
public class MultipleRowHeaderExample extends JFrame {
  Object[][] data;
  Object[] column;
  JTable table;
  MultiSpanCellTable fixedTable;

  public MultipleRowHeaderExample() {
    super( "Multiple Row Header Example" );
    setSize( 400, 150 );

    data =  new Object[][]{
        {"SNo."    ,"" },
        {"Name"    ,"1"},
        {""        ,"2"},
        {"Language","1"},
        {""        ,"2"},
        {""        ,"3"}};
    column = new Object[]{"",""};

    AttributiveCellTableModel fixedModel = new AttributiveCellTableModel(data, column) {
      public boolean CellEditable(int row, int col) {
        return false;
      }
    };

    CellSpan cellAtt =(CellSpan)fixedModel.getCellAttribute();
    cellAtt.combine(new int[] {0}    ,new int[] {0,1});
    cellAtt.combine(new int[] {1,2}  ,new int[] {0});
    cellAtt.combine(new int[] {3,4,5},new int[] {0});

    DefaultTableModel    model = new DefaultTableModel(data.length, 3);

    fixedTable = new MultiSpanCellTable( fixedModel );
    table = new JTable( model );
    fixedTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    fixedTable.setDefaultRenderer(Object.class, new RowHeaderRenderer(fixedTable));
    fixedTable.setGridColor(table.getTableHeader().getBackground());

    JScrollPane scroll = new JScrollPane( table );
    JViewport viewport = new JViewport();
    viewport.setView(fixedTable);
    viewport.setPreferredSize(fixedTable.getPreferredSize());
    scroll.setRowHeaderView(viewport);

    getContentPane().add(scroll, BorderLayout.CENTER);
  }

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

  class RowHeaderRenderer extends JLabel implements TableCellRenderer {
    RowHeaderRenderer(JTable table) {
      JTableHeader header = table.getTableHeader();
      setOpaque(true);
      setBorder(UIManager.getBorder("TableHeader.cellBorder"));
      setHorizontalAlignment(CENTER);
      setForeground(header.getForeground());
      setBackground(header.getBackground());
      setFont(header.getFont());
    }

    public Component getTableCellRendererComponent(JTable table, Object value,
                          boolean isSelected, boolean hasFocus, int row, int column) {
      setText((value == null) ? "" : value.toString());
      return this;
    }
  }

}