private boolean checkForOverwriteShortcut(
     final DefaultMutableTreeNode menubarNode, final KeyStroke keystroke) {
   final Node priorAssigned =
       MenuUtils.findAssignedMenuItemNodeRecursively(menubarNode, keystroke);
   if (priorAssigned == null || editedItem.equals(priorAssigned.getUserObject())) {
     return true;
   }
   return replaceOrCancel(priorAssigned, ((JMenuItem) priorAssigned.getUserObject()).getText());
 }
Esempio n. 2
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 public static Node findAssignedMenuItemNodeRecursively(
     final DefaultMutableTreeNode menubarNode, final KeyStroke keystroke) {
   final Enumeration<?> children = menubarNode.children();
   while (children.hasMoreElements()) {
     final Node child = (Node) children.nextElement();
     final Object childUserObject = child.getUserObject();
     if (childUserObject instanceof JMenuItem) {
       final JMenuItem childMenuItem = (JMenuItem) childUserObject;
       if (keystroke.equals(childMenuItem.getAccelerator())) {
         return child;
       }
     }
     // recurse
     final Node assignedMenuItemNode = findAssignedMenuItemNodeRecursively(child, keystroke);
     if (assignedMenuItemNode != null) return assignedMenuItemNode;
   }
   return null;
 }
 public boolean isValid(final KeyStroke keystroke, final Character keyChar) {
   if (keystroke == null) {
     return true;
   }
   final Node menuBarNode = menuBuilder.getMenuBar(menuBuilder.get(key));
   if (menuBarNode == null) {
     return true;
   }
   if (keyChar != KeyEvent.CHAR_UNDEFINED
       && (keystroke.getModifiers() & (Event.ALT_MASK | Event.CTRL_MASK | Event.META_MASK))
           == 0) {
     final String keyTypeActionString =
         ResourceController.getResourceController()
             .getProperty("key_type_action", FirstAction.EDIT_CURRENT.toString());
     FirstAction keyTypeAction = FirstAction.valueOf(keyTypeActionString);
     return FirstAction.IGNORE.equals(keyTypeAction);
   }
   if ((keystroke.getModifiers() & (Event.ALT_MASK | Event.CTRL_MASK | Event.META_MASK))
       == Event.ALT_MASK) {
     final JMenuBar menuBar = (JMenuBar) menuBarNode.getUserObject();
     final int menuCount = menuBar.getMenuCount();
     for (int i = 0; i < menuCount; i++) {
       final JMenu menu = menuBar.getMenu(i);
       final char c = (char) menu.getMnemonic();
       if (Character.toLowerCase(keystroke.getKeyCode()) == Character.toLowerCase(c)) {
         JOptionPane.showMessageDialog(
             parentComponent,
             menu.getText(),
             TextUtils.getText("used_in_menu"),
             JOptionPane.WARNING_MESSAGE);
         return false;
       }
     }
   }
   if (!checkForOverwriteShortcut(menuBarNode, keystroke)) {
     return false;
   }
   final KeyStroke derivedKS = FreeplaneMenuBar.derive(keystroke, keyChar);
   if (derivedKS == keystroke) {
     return true;
   }
   return checkForOverwriteShortcut(menuBarNode, derivedKS);
 }