Bug 15844 [Exception Handling] SelectionChange events and NPE
Build 20020508 Due to new global actions there are now more objects listening to selection changes send out by a JFace viewer. We now had the case that one of the listener generated a NPE. As a result all listeners registered after that one didn't receive the selection change event. StructuredViewers should be more fault tolorant to exceptions when informing listeners.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
ViewerFilter f = (ViewerFilter) iter.next();
			result = f.filter(this, parent, result);
		}
	}
	return result;
}
/**
 * Returns this viewer's filters.
 *
 * @return an array of viewer filters
 */
public ViewerFilter[] getFilters() {
	if (filters == null)
		return new ViewerFilter[0];
	ViewerFilter[] result = new ViewerFilter[filters.size()];
	filters.toArray(result);
	return result;
}
/**
 * Returns the item at the given display-relative coordinates, or
 * <code>null</code> if there is no item at that location.
 * <p>
 * The default implementation of this method returns <code>null</code>.
 * </p>
 *
 * @param x horizontal coordinate
 * @param y vertical coordinate
 * @return the item, or <code>null</code> if there is no item at the
 *  given coordinates
 */