@Override
public void undo() {
super.undo();
// remember modified children for redo
m_modifiedSubtree.clear();
// get node to edit
final GroupTreeNode subtreeRoot = m_groupRoot.getNode(m_subtreeRootPath);
for (int i = 0; i < subtreeRoot.getChildCount(); ++i) {
m_modifiedSubtree.add(subtreeRoot.getChildAt(i));
}
// keep subtree handle, but restore everything else from backup
subtreeRoot.removeAllChildren();
for (int i = 0; i < m_subtreeBackup.getChildCount(); ++i) {
subtreeRoot.add(((GroupTreeNode) m_subtreeBackup.getChildAt(i)).deepCopy());
}
if (m_revalidate) {
m_groupSelector.revalidateGroups();
}
}
/** @param move For add: if true, remove from previous groups */
private void insertNodes(
JMenu menu, GroupTreeNode node, BibtexEntry[] selection, boolean add, boolean move) {
final AbstractAction action = getAction(node, selection, add, move);
if (node.getChildCount() == 0) {
JMenuItem menuItem = new JMenuItem(action);
setGroupFontAndIcon(menuItem, node.getGroup());
menu.add(menuItem);
if (action.isEnabled()) {
menu.setEnabled(true);
}
return;
}
JMenu submenu;
if (node.getGroup() instanceof AllEntriesGroup) {
for (int i = 0; i < node.getChildCount(); ++i) {
insertNodes(menu, (GroupTreeNode) node.getChildAt(i), selection, add, move);
}
} else {
submenu = new JMenu('[' + node.getGroup().getName() + ']');
setGroupFontAndIcon(submenu, node.getGroup());
// setEnabled(true) is done above/below if at least one menu
// entry (item or submenu) is enabled
submenu.setEnabled(action.isEnabled());
JMenuItem menuItem = new JMenuItem(action);
setGroupFontAndIcon(menuItem, node.getGroup());
submenu.add(menuItem);
submenu.add(new Separator());
for (int i = 0; i < node.getChildCount(); ++i) {
insertNodes(submenu, (GroupTreeNode) node.getChildAt(i), selection, add, move);
}
menu.add(submenu);
if (submenu.isEnabled()) {
menu.setEnabled(true);
}
}
}
