/** Opens the SubMenu */
public void menuKeyTyped(MenuKeyEvent e) {
if (!crossMenuMnemonic) {
JPopupMenu pm = getActivePopupMenu();
if (pm != null && pm != menuItem.getParent()) {
return;
}
}
int key = menuItem.getMnemonic();
if (key == 0) return;
MenuElement path[] = e.getPath();
if (lower((char) key) == lower(e.getKeyChar())) {
JPopupMenu popupMenu = ((JMenu) menuItem).getPopupMenu();
MenuElement sub[] = popupMenu.getSubElements();
if (sub.length > 0) {
MenuSelectionManager manager = e.getMenuSelectionManager();
MenuElement newPath[] = new MenuElement[path.length + 2];
System.arraycopy(path, 0, newPath, 0, path.length);
newPath[path.length] = popupMenu;
newPath[path.length + 1] = sub[0];
manager.setSelectedPath(newPath);
}
e.consume();
}
}
public void menuKeyPressed(MenuKeyEvent e) {
if (e.getKeyCode() == mnemonic) {
ActionEvent ae =
new ActionEvent(
e.getSource(), e.getID(), (String) getValue(Action.NAME), e.getModifiers());
actionPerformed(ae);
e.consume();
}
}
/**
* Processes a key event forwarded from the <code>MenuSelectionManager</code> and changes the menu
* selection, if necessary, by using <code>MenuSelectionManager</code>'s API.
*
* <p>Note: you do not have to forward the event to sub-components. This is done automatically by
* the <code>MenuSelectionManager</code>.
*
* @param e a <code>KeyEvent</code>
* @param path the <code>MenuElement</code> path array
* @param manager the <code>MenuSelectionManager</code>
*/
public void processKeyEvent(KeyEvent e, MenuElement path[], MenuSelectionManager manager) {
MenuKeyEvent mke =
new MenuKeyEvent(
e.getComponent(),
e.getID(),
e.getWhen(),
e.getModifiers(),
e.getKeyCode(),
e.getKeyChar(),
path,
manager);
processMenuKeyEvent(mke);
if (mke.isConsumed()) {
e.consume();
}
}
/**
* Handles the mnemonics for the menu items. Will also handle duplicate mnemonics. Perhaps this
* should be moved into BasicPopupMenuUI. See 4670831
*/
public void menuKeyPressed(MenuKeyEvent e) {
// Handle the case for Escape or Enter...
char keyChar = e.getKeyChar();
if (!Character.isLetterOrDigit(keyChar)) return;
MenuSelectionManager manager = e.getMenuSelectionManager();
MenuElement selectedPath[] = manager.getSelectedPath();
for (int i = selectedPath.length - 1; i >= 0; i--) {
if (selectedPath[i] == menuItem) {
JPopupMenu popupMenu = ((JMenu) menuItem).getPopupMenu();
MenuElement items[] = popupMenu.getSubElements();
int index = -1;
for (int j = 0; j < items.length; j++) {
int key = ((JMenuItem) items[j]).getMnemonic();
if (Character.toLowerCase((char) key) == Character.toLowerCase(keyChar)) {
index = j;
break;
}
}
if (index != -1) {
// Invoke the menu action
JMenuItem item = (JMenuItem) items[index];
if (!(item instanceof JMenu)) {
// Let Submenus be handled by menuKeyTyped
manager.clearSelectedPath();
item.doClick();
}
}
e.consume();
return;
}
}
}
/**
* Handles a keystroke in a menu.
*
* @param e a <code>MenuKeyEvent</code> object
* @since 1.5
*/
private void processMenuKeyEvent(MenuKeyEvent e) {
switch (e.getID()) {
case KeyEvent.KEY_PRESSED:
fireMenuKeyPressed(e);
break;
case KeyEvent.KEY_RELEASED:
fireMenuKeyReleased(e);
break;
case KeyEvent.KEY_TYPED:
fireMenuKeyTyped(e);
break;
default:
break;
}
}