@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
getActivity().getMenuInflater().inflate(R.menu.menu_treeview, menu);
AdapterView.AdapterContextMenuInfo adapterInfo = (AdapterView.AdapterContextMenuInfo) menuInfo;
long id = adapterInfo.id;
TreeNodeInfo<Long> nodeInfo = mTreeStateManager.getNodeInfo(id);
if (nodeInfo.isWithChildren()) {
if (nodeInfo.isExpanded()) {
menu.findItem(R.id.context_menu_expand_item).setVisible(false);
menu.findItem(R.id.context_menu_expand_all).setVisible(false);
} else {
menu.findItem(R.id.context_menu_collapse).setVisible(false);
}
} else {
menu.findItem(R.id.context_menu_expand_item).setVisible(false);
menu.findItem(R.id.context_menu_expand_all).setVisible(false);
menu.findItem(R.id.context_menu_collapse).setVisible(false);
}
// hide delete because deleting is dangerous
menu.findItem(R.id.context_menu_delete).setVisible(false);
super.onCreateContextMenu(menu, v, menuInfo);
}
