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package test;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2006</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class ComboTable {
/** Pseudo values.
*/
enum Val {
TOTO, TITI, TUTU, TATA, GAGA, MOMO, GUGU, BYE, AILLE, OUILLE, OUI, NON, YES, NO, JA, NEIN;
}
/** The pseudo database.
*/
private static final Map<Integer, java.util.List<Val>> DATA_BASE = createDataBase();
/** Self test main.
* @param args Arguments from the command-line.
*/
public static void main(String ...args) {
DefaultTableModel tableModel = new DefaultTableModel() {
/** {@inheritDoc}
*/
@Override public Class getColumnClass(int i) {
if (i == 1) {
return Val.class;
}
return String.class;
}
};
tableModel.setColumnCount(2);
tableModel.setColumnIdentifiers(new Object[] {"Name", "Choice"});
for (Val val : Val.values()) {
tableModel.addRow(new Object[] {val.toString(), val});
}
JTable table = new JTable(tableModel);
table.setDefaultRenderer(Val.class, new ComboTableCellRenderer());
table.setDefaultEditor(Val.class, new ComboTableCellEditor(new DataBaseQuerySystem()));
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new JScrollPane(table), BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
/** Create the pseudo data base.
* @return The pseudo data base.
*/
private static Map<Integer, java.util.List<Val>> createDataBase() {
Random random = new Random();
Map<Integer, java.util.List<Val>> result = new HashMap<Integer, java.util.List<Val>>();
Val[] vals = Val.values();
int valueNumber = vals.length;
int i = 0;
for (Val val : vals) {
java.util.List<Val> list = new ArrayList<Val>(4);
list.add(val);
while (list.size() != 4) {
int index = random.nextInt(valueNumber);
Val v = vals[index];
if (!list.contains(v)) {
list.add(v);
}
}
result.put(i, Collections.unmodifiableList(list));
i++;
}
return Collections.unmodifiableMap(result);
}
/** The combo box table cell renderer.
*/
private static class ComboTableCellRenderer extends JComboBox implements TableCellRenderer {
/** {@inheritDoc}
*/
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(table.getBackground());
}
removeAllItems();
if (value != null) {
addItem(value);
}
setSelectedItem(value);
return this;
}
}
/** The combo box table cell editor.
*/
private static class ComboTableCellEditor extends DefaultCellEditor {
private DataBaseQuerySystem dbConnect;
public ComboTableCellEditor(DataBaseQuerySystem dbConnect) {
super(new JComboBox());
this.dbConnect = dbConnect;
}
/** {@inheritDoc}
*/
@Override public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
Component editor = super.getTableCellEditorComponent(table, value, isSelected, row, column);
JComboBox combo = (JComboBox) getComponent();
combo.removeAllItems();
System.out.println("query for row" + row);
java.util.List<Val> authorizedValues = dbConnect.getAuthorizedValuesForRow(row);
for (Val authorizedValue : authorizedValues) {
combo.addItem(authorizedValue);
}
combo.setSelectedItem(value);
return editor;
}
}
/** Query data base.
*/
private static class DataBaseQuerySystem {
/** Query the data base.
* @param row Current row.
* @return A list of authorized values.
*/
public java.util.List<Val> getAuthorizedValuesForRow(int row) {
return DATA_BASE.get(row);
}
}
} |
