/** @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);
}
}
}
/** @param move For add: if true, remove from all previous groups */
private AbstractAction getAction(
GroupTreeNode node, BibtexEntry[] selection, boolean add, boolean move) {
AbstractAction action =
add ? new AddToGroupAction(node, move, panel) : new RemoveFromGroupAction(node, panel);
AbstractGroup group = node.getGroup();
if (!move) {
action.setEnabled(
add
? group.supportsAdd() && !group.containsAll(selection)
: group.supportsRemove() && group.containsAny(selection));
} else {
action.setEnabled(group.supportsAdd());
}
return action;
}