How to reach Combobox Items via Key pressed (Java5)
Hallo all,
I have a question. I have a JCombobox field and assume that it has its items like (Apple, Banana, Pear). How can I manage to jump into Pear item by pressing P in that combobox?
I am sorry I was wrong. I had to tell that my Combobox value is in my Table and the CellListener doesn't allow to do that. If I am gonna have another Swing problem I am going to send my message to that forum. I don't want to duplicate this question right now. Here is my code.
public void load() {
serviceType = data.getMetadata(position).getMetadataValuesSorted().toArray(new MetadataValue[0]);
String[] metadataValues = new String[serviceType.length];
for (int i = 0; i < serviceType.length; i++) {
MetadataValue values = serviceType;
metadataValues[i] = values.getValue();
final TableColumn col2 = table.getColumnModel().getColumn(1);
col2.setCellEditor(new MetadataValueComboBoxEditor(serviceType));
col2.setCellRenderer(new MetadataValueComboBoxRenderer(serviceType));
public class MetadataValueComboBoxRenderer extends JComboBox implements TableCellRenderer {
public MetadataValueComboBoxRenderer(final MetadataValue[] items) {
super(items);
final JComboBox newItems = new JComboBox(items);
setRenderer(new DefaultListCellRenderer() {
public Component getListCellRendererComponent(final JList list, Object value, final int index, final boolean isSelected, final boolean cellHasFocus) {
if (value != null && value instanceof MetadataValue) {
value = ((MetadataValue) value).getValue();
final String valueString = (String)value;
newItems.addKeyListener(new KeyAdapter() {
public void keyTyped(KeyEvent e) {
for (int i = 0; i < items.length; i++) {
if (e.getKeyChar() == valueString.charAt(0)) {
newItems.setSelectedItem(newItems.getComponent(i));
return super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
registerComponent(this);
public Component getTableCellRendererComponent(final JTable table, final Object value,
final boolean isSelected, final boolean hasFocus, final int row, final int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
super.setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(table.getBackground());
setSelectedItem(value);
return this;
public class MetadataValueComboBoxEditor extends DefaultCellEditor {
public MetadataValueComboBoxEditor(final MetadataValue[] items) {
super(new JComboBox(items));
final JComboBox newItems = new JComboBox(items);
registerComponent((JComponent) this.getComponent());
((JComboBox) getComponent()).setRenderer(new DefaultListCellRenderer() {
public Component getListCellRendererComponent(final JList list, Object value, final int index, final boolean isSelected, final boolean cellHasFocus) {
if (value != null && value instanceof MetadataValue) {
value = ((MetadataValue) value).getValue();
final String valueString = (String)value;
newItems.addKeyListener(new KeyAdapter() {
public void keyTyped(KeyEvent e) {
for (int i = 0; i < items.length; i++) {
if (e.getKeyChar() == valueString.charAt(0)) {
newItems.setSelectedItem(newItems.getComponent(i));
return super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
MetadataValueComboBoxEditor and MetadataValueComboBoxRenderer inner classes doesn't allow me to select the item via key pressed.
Edited by: NEO1976 on Mar 24, 2008 10:11 AM
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