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());
}
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);
}
private boolean replaceOrCancel(Node menuItemNode, String oldMenuItemTitle) {
if (askForReplaceShortcutViaDialog(oldMenuItemTitle, parentComponent)) {
menuBuilder.setAccelerator(menuItemNode, null);
final String shortcutKey = menuBuilder.getShortcutKey(menuItemNode.getKey().toString());
ResourceController.getResourceController().setProperty(shortcutKey, "");
return true;
} else {
return false;
}
}