Method addAll

src/main/java/groovy/util/ObservableSet.java:320–352

{@inheritDoc}

(Collection<? extends E> c)

    /** {@inheritDoc} */
    @Override
    public boolean addAll(Collection<? extends E> c) {
        Set<E> duplicates = new HashSet<E>();
        if (null != c) {
            for (E e : c) {
                if (!delegate.contains(e)) continue;
                duplicates.add(e);
            }
        }

        int oldSize = size();
        boolean success = delegate.addAll(c);

        if (success && c != null) {
            List<E> values = new ArrayList<E>();
            for (E element : c) {
                if (test != null) {
                    Object result = test.call(element);
                    if (result instanceof Boolean && (Boolean) result && !duplicates.contains(element)) {
                        values.add(element);
                    }
                } else if (!duplicates.contains(element)) {
                    values.add(element);
                }
            }
            if (!values.isEmpty()) {
                fireMultiElementAddedEvent(values);
                fireSizeChangedEvent(oldSize, size());
            }
        }

        return success;
    }

    /** {@inheritDoc} */
    @Override