Bug 27075 ViewerSorter could maybe lazily initialize Collator
calling JavaElementSorter creates a lot of new objects (ViewerSorter calls Collator.getInstance() which is the culprit) so maybe fSorter could be initialized lazily
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/dialogfields/ListDialogField.java
}
	
		
		
		public void selectionChanged(SelectionChangedEvent event) {
			doListSelected(event);
		}
		
		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.IDoubleClickListener#doubleClick(org.eclipse.jface.viewers.DoubleClickEvent)
		 */
		public void doubleClick(DoubleClickEvent event) {
			doDoubleClick(event);
		}
	}
	
	
	protected void doListSelected(SelectionChangedEvent event) {
		updateButtonState();
		if (fListAdapter != null) {
			fListAdapter.selectionChanged(this);
		}
	}
	
	protected void doDoubleClick(DoubleClickEvent event) {
		if (fListAdapter != null) {
			fListAdapter.doubleClicked(this);
		}
	}	
}