How to use

addActionIfNotAlreadySet

method

in

org.freeplane.features.mode.Controller

@Override
public void visit(Entry target) {
  final DefaultComboBoxModel filterConditions = filterController.getFilterConditions();
  final HashSet<String> usedNames = new HashSet<String>();
  for(int i = 0; i < filterConditions.getSize(); i++){
    final ASelectableCondition condition = (ASelectableCondition) filterConditions.getElementAt(i);
    final String conditionName = condition.getUserName();
    if(conditionName != null && usedNames.add(conditionName)){
      final ApplyNamedFilterAction action = new ApplyNamedFilterAction(filterController, condition);
      controller.addActionIfNotAlreadySet(action);
      new EntryAccessor().addChildAction(target, action);
    }
  }
}