Bug 125600 [Field Assist] - popup shell should be resizable with size retained
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
private final class TargetControlListener implements Listener {
			
			public void handleEvent(Event e) {
				if (!isValid())
					return;
				
				
				
				if (e.type == SWT.Traverse) {
					e.detail = SWT.TRAVERSE_NONE;
					e.doit = true;
				}
				char key = e.character;
				
				if (key == 0) {
					int newSelection = proposalTable.getSelectionIndex();
					int visibleRows = (proposalTable.getSize().y / proposalTable
							.getItemHeight()) - 1;
					switch (e.keyCode) {
					case SWT.ARROW_UP:
						newSelection -= 1;
						if (newSelection < 0)
							newSelection = proposalTable.getItemCount() - 1;
						break;
					case SWT.ARROW_DOWN:
						newSelection += 1;
						if (newSelection > proposalTable.getItemCount() - 1)
							newSelection = 0;
						break;
					case SWT.PAGE_DOWN: