Examples of prefuse.util.collections.CopyOnWriteArrayList

prefuse.util.collections.CopyOnWriteArrayList

A thread-safe variant of {@link java.util.ArrayList} in which all mutativeoperations (add, set, and so on) are implemented by making a fresh copy of the underlying array.

This is ordinarily too costly, but may be more efficient than alternatives when traversal operations vastly outnumber mutations, and is useful when you cannot or don't want to synchronize traversals, yet need to preclude interference among concurrent threads. The "snapshot" style iterator method uses a reference to the state of the array at the point that the iterator was created. This array never changes during the lifetime of the iterator, so interference is impossible and the iterator is guaranteed not to throw ConcurrentModificationException. The iterator will not reflect additions, removals, or changes to the list since the iterator was created. Element-changing operations on iterators themselves (remove, set, and add) are not supported. These methods throw UnsupportedOperationException.

All elements are permitted, including null.

This class is a member of the Java Collections Framework. @since 1.5 @author Doug Lea

     * Add an ActivityListener to monitor this activity's events.
     * @param l the ActivityListener to add
     */
    public void addActivityListener(ActivityListener l) {
        if ( m_listeners == null )
            m_listeners = new CopyOnWriteArrayList();
        if ( !m_listeners.contains(l) )
            m_listeners.add(l);
    }

     * about paint events.
     * @param pl the {@link prefuse.util.display.PaintListener} to add
     */
    public void addPaintListener(PaintListener pl) {
        if ( m_painters == null )
            m_painters = new CopyOnWriteArrayList();
        m_painters.add(pl);
    }

     * occupied by the VisualItems in this Display change.
     * @param ibl the {@link prefuse.util.display.ItemBoundsListener} to add
     */
    public void addItemBoundsListener(ItemBoundsListener ibl) {
        if ( m_bounders == null )
            m_bounders = new CopyOnWriteArrayList();
        m_bounders.add(ibl);
    }

Examples of prefuse.util.collections.CopyOnWriteArrayList

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