Bug 262022 [FieldAssist] ContentProposalAdapter.recomputeProposals might throw a NPE
When a control using content proposal gets disposed during usage the recomputeProposals() method might throw a NPE. This is caused by getting "allProposals" using a call to getProposals() which is allowed to return null. When using allProposals.length this will crash. I'm not sure if the simple solution if ((allProposals == null) || (allProposals.length == 0) { proposals = new IContentProposal[0]; close(); } else { // cont. will work or if the popup will have problems with a disposed control.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
e.doit = false;
						}
						break;
					case SWT.END:
						newSelection = proposalTable.getItemCount() - 1;
						if (e.type == SWT.KeyDown) {
							
							e.doit = false;
						}
						break;
					
					
					
					
					case SWT.ARROW_LEFT:
					case SWT.ARROW_RIGHT:
						if (e.type == SWT.Traverse) {
							e.doit = false;
						} else {
							e.doit = true;
							String contents = getControlContentAdapter()
									.getControlContents(getControl());
							
							 
							 
							
							if (contents.length() > 0) {
								asyncRecomputeProposals(filterText);
							}
						}