Bug 192630 [FieldAssist] auto activation of proposal popup should be canceled on keystroke
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
if (e.type == SWT.KeyDown) {
							
							e.doit = false;
						}
						break;
					case SWT.PAGE_DOWN:
						newSelection += visibleRows;
						if (newSelection >= proposalTable.getItemCount()) {
							newSelection = proposalTable.getItemCount() - 1;
						}
						if (e.type == SWT.KeyDown) {
							
							e.doit = false;
						}
						break;
					case SWT.PAGE_UP:
						newSelection -= visibleRows;
						if (newSelection < 0) {
							newSelection = 0;
						}
						if (e.type == SWT.KeyDown) {
							
							e.doit = false;
						}
						break;
					case SWT.HOME:
						newSelection = 0;
						if (e.type == SWT.KeyDown) {
							
							e.doit = false;