package de.tutorials;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Font;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Collections;
import java.util.Comparator;
import java.util.Vector;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import com.sun.java.swing.plaf.motif.MotifGraphicsUtils;
/**
* @author Administrator
*
* TODO Explain me
*/
public class SortableJTableExample extends JFrame {
private JTable table;
private SortableTableModel model;
private final ImageIcon UP_ICON = new ImageIcon(MotifGraphicsUtils.class
.getResource("icons/ScrollUpArrow.gif"));
private ImageIcon DOWN_ICON = new ImageIcon(MotifGraphicsUtils.class
.getResource("icons/ScrollDownArrow.gif"));
public SortableJTableExample() {
super("SortableJTableExample");
setDefaultCloseOperation(EXIT_ON_CLOSE);
Object[][] rowData = { { Integer.valueOf(13), "a", "c" },
{ Integer.valueOf(2), "b", "b" },
{ Integer.valueOf(3), "f", "r" },
{ Integer.valueOf(12), "q12", "a12" },
{ Integer.valueOf(5), "w", "z" },
{ Integer.valueOf(6), "c", "a" },
{ Integer.valueOf(11), "a11", "q11" },
{ Integer.valueOf(8), "a8", "q8" },
{ Integer.valueOf(9), "a9", "q9" },
{ Integer.valueOf(10), "a10", "q10" },
{ Integer.valueOf(7), "a7", "q7" },
{ Integer.valueOf(4), "a4", "q4" },
{ Integer.valueOf(1), "a1", "q1" } };
final Object[] columnHeaders = { "ID", "Header1", "Header2" };
model = new SortableTableModel(rowData, columnHeaders);
table = new JTable(model);
table.getTableHeader().setDefaultRenderer(
new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
JTableHeader header = table.getTableHeader();
setForeground(header.getForeground());
setBackground(header.getBackground());
setFont(header.getFont());
setText(value == null ? "" : value.toString());
setBorder(UIManager.getBorder("TableHeader.cellBorder"));
setHorizontalAlignment(SwingConstants.CENTER);
setHorizontalTextPosition(SwingConstants.LEFT);
if (model.sortColumnDesc[column]) {
setIcon(UP_ICON);
} else {
setIcon(DOWN_ICON);
}
return this;
}
});
table.getTableHeader().addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent evt) {
model.sortByColumn(table.columnAtPoint(evt.getPoint()));
}
});
table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
Component component = super.getTableCellRendererComponent(
table, value, isSelected, hasFocus, row, column);
if (column == model.currentSortColumn) {
component
.setFont(component.getFont().deriveFont(Font.BOLD));
}
return component;
}
});
Container c = getContentPane();
c.add(new JScrollPane(table), BorderLayout.CENTER);
pack();
setVisible(true);
}
public static void main(String[] args) {
new SortableJTableExample();
}
class SortableTableModel extends DefaultTableModel {
private boolean[] sortColumnDesc;
private int currentSortColumn = 0;
private Comparator comparator = new Comparator() {
public int compare(Object o1, Object o2) {
Vector v1 = (Vector) o1;
Vector v2 = (Vector) o2;
int columnCnt = getColumnCount();
if (currentSortColumn >= columnCnt) {
throw new IllegalArgumentException("max column idx: "
+ columnCnt);
}
Comparable c1 = (Comparable) v1.get(currentSortColumn);
Comparable c2 = (Comparable) v2.get(currentSortColumn);
int cmp = c1.compareTo(c2);
if (sortColumnDesc[currentSortColumn]) {
cmp *= -1;
}
return cmp;
}
};
public SortableTableModel(Object[][] rowData, Object[] headers) {
super(rowData, headers);
sortColumnDesc = new boolean[headers.length];
}
public void sortByColumn(final int clm) {
currentSortColumn = clm;
Collections.sort(SortableJTableExample.this.model.dataVector,
comparator);
model.sortColumnDesc[clm] ^= true;
}
}
}
