Description David Coppit 2006-04-15 10:23:00 EDT

Editor implementors who wish to put a decorator on the right side of a composite ruler must manually count how many decorators were added by the superclass:

  protected CompositeRuler createCompositeRuler() {
    CompositeRuler ruler = super.createCompositeRuler();

    int numberOfDecorators = 0;
		
    for (Iterator it = ruler.getDecoratorIterator(); it.hasNext(); it.next())
      numberOfDecorators++;
		
    ruler.addDecorator(numberOfDecorators, createConcernRulerColumn());

    return ruler;
  }

Things would be easier if the CompositeRuler provided a getDecoratorsCount() method:

  public int getDecoratorsCount() {
    return fDecorators.size();
  }

so that the implementation could rather be:

  protected CompositeRuler createCompositeRuler() {
    CompositeRuler ruler = super.createCompositeRuler();
    ruler.addDecorator(ruler.getDecoratorsCount(), createConcernRulerColumn());

    return ruler;
  }

Note: This may be related to bug 25793.