Bug 125600 [Field Assist] - popup shell should be resizable with size retained
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
return;
				}
				
				
				
				switch (key) {
				case SWT.ESC: 
					e.doit = false;
					close();
					break;
				case SWT.LF:
				case SWT.CR:
					e.doit = false;
					Object p = getSelectedProposal();
					if (p != null)
						acceptCurrentProposal();
					close();
					break;
				case SWT.TAB:
					e.doit = false;
					getShell().setFocus();
					return;
				case SWT.BS:
					
					if (filterStyle != FILTER_NONE) {
						
						if (filterText.length() == 0)
							return;
						
						filterText = filterText.substring(0, filterText