| package org.eclipse.jface.databinding.conformance.util; |
| |
| import java.util.List; |
| |
| import org.eclipse.core.databinding.observable.list.IListChangeListener; |
| import org.eclipse.core.databinding.observable.list.IObservableList; |
| import org.eclipse.core.databinding.observable.list.ListChangeEvent; |
| |
| /** |
| * Listener for tracking the firing of ListChangeEvents. |
| */ |
| public class ListChangeEventTracker implements IListChangeListener { |
| public int count; |
| |
| public ListChangeEvent event; |
| |
| /** |
| * Queue that the listener will add itself too when it is notified of an |
| * event. Used to determine order of notifications of listeners. |
| */ |
| public final List listenerQueue; |
| |
| public ListChangeEventTracker() { |
| this(null); |
| } |
| |
| public ListChangeEventTracker(List listenerQueue) { |
| this.listenerQueue = listenerQueue; |
| } |
| |
| public void handleListChange(ListChangeEvent event) { |
| count++; |
| this.event = event; |
| if (listenerQueue != null) { |
| listenerQueue.add(this); |
| } |
| } |
| |
| /** |
| * Convenience method to register a new listener. |
| * |
| * @param observable |
| * @return tracker |
| */ |
| public static ListChangeEventTracker observe(IObservableList observable) { |
| ListChangeEventTracker tracker = new ListChangeEventTracker(); |
| observable.addListChangeListener(tracker); |
| return tracker; |
| } |
| } |