Bug 148357 [Field Assist] - API - provide access for closing the proposal popup
I think that the field assist API needs more hooks to be customizable. For example : 1) There is no way to manually close/open the popup. Most of the times, this is the easier thing for a user to ask to implement his custom behaviour. 2) There is no way to intercept keystrokes/events directed to the field. 3) There is no way to control focus.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
newSelection = 0;
						}
						
						
						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: