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
try {
		
		oldSelection= getSelection();
		inChange= restoreSelection= true;
		
		
		updateCode.run();
				
	} finally {
		inChange= false;
		
		
		if (restoreSelection)
			setSelectionToWidget(oldSelection, false);
		
		
		ISelection newSelection= getSelection();
		if (! newSelection.equals(oldSelection))
			handleInvalidSelection(oldSelection, newSelection);
	}
}
/*
 * Non-Javadoc.
 * Method declared on Viewer.
 */
public void refresh() {
	refresh(getRoot());
}
/**
 * Refreshes this viewer with information freshly obtained from this