Tab in and out JComboBox in JTable
/*
*
Code reference: http://forum.java.sun.com/thread.jspa?threadID=384665&messageID=3310903
Pratap Singh
Email: pratap.singh at siemens.com
at is @
*
* */
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.Calendar;
import java.util.EventObject;
import java.util.GregorianCalendar;
import javax.swing.ComboBoxEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.EventListenerList;
import javax.swing.plaf.basic.BasicComboBoxUI;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
public class SimpleTableTestTabComboBox extends JFrame {
protected JTable table;
public SimpleTableTestTabComboBox() {
Container pane = getContentPane();
pane.setLayout(new BorderLayout());
TableValues tv = new TableValues();
table = new JTable(tv);
TableColumnModel tcm = table.getColumnModel();
TableColumn tc = tcm.getColumn(TableValues.GENDER);
// tc.setCellRenderer(new GenderRenderer());
tc.setCellEditor(new GenderEditor());
JScrollPane jsp = new JScrollPane(table);
pane.add(jsp, BorderLayout.CENTER);
pane.add(new JTextField(), BorderLayout.SOUTH);
}
public static void main(String[] args) {
SimpleTableTestTabComboBox stt = new SimpleTableTestTabComboBox();
stt.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
stt.setSize(400, 300);
stt.setVisible(true);
}
}
class TableValues extends AbstractTableModel {
public final static int FIRST_NAME = 0;
public final static int LAST_NAME = 1;
public final static int DATE_OF_BIRTH = 2;
public final static int ACCOUNT_BALANCE = 3;
public final static int GENDER = 4;
public final static boolean GENDER_MALE = true;
public final static boolean GENDER_FEMALE = false;
public final static String[] columnNames = { "First Name", "Last Name", "Date of Birth",
"Account Balance", "Gender" };
public Object[][] values = {
{ "Clay", "Ashworth", new GregorianCalendar(1962, Calendar.FEBRUARY, 20).getTime(),
new Float(12345.67), "three" },
{ "Jacob", "Ashworth", new GregorianCalendar(1987, Calendar.JANUARY, 6).getTime(),
new Float(23456.78), "three1" },
{ "Jordan", "Ashworth", new GregorianCalendar(1989, Calendar.AUGUST, 31).getTime(),
new Float(34567.89), "three2" },
{ "Evelyn", "Kirk", new GregorianCalendar(1945, Calendar.JANUARY, 16).getTime(),
new Float(-456.70), "One" },
{ "Belle", "Spyres", new GregorianCalendar(1907, Calendar.AUGUST, 2).getTime(),
new Float(567.00), "two" } };
public int getRowCount() {
return values.length;
}
public int getColumnCount() {
return values[0].length;
}
public Object getValueAt(int row, int column) {
return values[row][column];
}
public void setValueAt(Object aValue, int r, int c) {
values[r][c] = aValue;
}
public String getColumnName(int column) {
return columnNames[column];
}
public boolean isCellEditable(int r, int c) {
return c == GENDER;
}
}
class MyComboUI extends BasicComboBoxUI {
public JList getList() {
return listBox;
}
}
class GenderRenderer extends JComboBox implements TableCellRenderer {
public GenderRenderer() {
super();
addItem("three");
addItem("three1");
addItem("three2");
addItem("One");
addItem("two");
}
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
if (hasFocus) {
table.editCellAt(row, column);
JComboBox combo = (JComboBox) table.getColumnModel().getColumn(TableValues.GENDER)
.getCellEditor();
ComboBoxEditor editor = (ComboBoxEditor) combo.getEditor();
JTextField tf = (JTextField) editor.getEditorComponent();
tf.requestFocusInWindow();
tf.selectAll();
}
if (isSelected) {
setForeground(table.getSelectionForeground());
super.setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(table.getBackground());
}
setSelectedItem(value);
return this;
}
}
class GenderEditor extends JComboBox implements TableCellEditor, CaretListener {
protected EventListenerList listenerList = new EventListenerList();
protected ChangeEvent changeEvent = new ChangeEvent(this);
private MyComboUI comboUi = new MyComboUI();
private JTextField tf;
Object newValue;
public GenderEditor() {
super();
setUI(comboUi);
// comboUi.get
addItem("three");
addItem("three1");
addItem("three2");
addItem("One");
addItem("two");
setEditable(true);
tf = (JTextField) getEditor().getEditorComponent();
tf.addCaretListener(this);
tf.addKeyListener(new KeyAdapter() {
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == e.VK_ENTER) {
Object value = comboUi.getList().getSelectedValue();
tf.transferFocus();
hidePopup();
System.out.println("enter pressed, selected value, when enter pressed: " + value);
fireEditingStopped();
}
}
});
addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
// fireEditingStopped();
}
});
}
public void addCellEditorListener(CellEditorListener listener) {
listenerList.add(CellEditorListener.class, listener);
}
public void removeCellEditorListener(CellEditorListener listener) {
listenerList.remove(CellEditorListener.class, listener);
}
protected void fireEditingStopped() {
System.out.println("fireEditingStopped called ");
CellEditorListener listener;
Object[] listeners = listenerList.getListenerList();
for (int i = 0; i < listeners.length; i++) {
if (listeners[i] == CellEditorListener.class) {
listener = (CellEditorListener) listeners[i + 1];
listener.editingStopped(changeEvent);
}
}
}
protected void fireEditingCanceled() {
CellEditorListener listener;
Object[] listeners = listenerList.getListenerList();
for (int i = 0; i < listeners.length; i++) {
//if (listeners == CellEditorListener.class) {
if (listeners[i] == CellEditorListener.class) {
listener = (CellEditorListener) listeners[i + 1];
listener.editingCanceled(changeEvent);
}
}
}
public void cancelCellEditing() {
System.out.println("cancelCellEditing called ");
fireEditingCanceled();
}
public boolean stopCellEditing() {
System.out.println("stopCellEditing called ");
fireEditingStopped();
return true;
}
public boolean isCellEditable(EventObject event) {
return true;
}
public boolean shouldSelectCell(EventObject event) {
return true;
}
public Object getCellEditorValue() {
System.out.println("getCellEditorValue called returning vlaue: " + newValue);
tf.setText(newValue.toString());
return newValue;
// return super.getSelectedItem();
}
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected,
int row, int column) {
return this;
}
public void caretUpdate(CaretEvent e) {
if (!isPopupVisible() && tf.isShowing() && tf.hasFocus())
showPopup();
JTextField tf = (JTextField) e.getSource();
String text = tf.getText().toLowerCase();
int index = -1;
for (int i = 0; i < super.getItemCount(); i++) {
String item = ((String) getItemAt(i)).toLowerCase();
if (item.startsWith(text)) {
index = i;
break;
}
}
if (index != -1)
comboUi.getList().setSelectedIndex(index);
else
comboUi.getList().clearSelection();
newValue = comboUi.getList().getSelectedValue();
System.out.println("new value set to: " + newValue);
}
}
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