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
* System.out.println(e);
								 * System.out.println(e.display.getFocusControl());
								 * System.out.println(e.display.getActiveShell());
								 */
								close();
							}
						}
					});
					return;
				}
				
				
				if (e.type == SWT.Selection) {
					scrollbarClicked = true;
					return;
				}
				
				close();
			}
			
			
			void installListeners() {
				
				proposalTable.addListener(SWT.FocusOut, this);
				ScrollBar scrollbar = proposalTable.getVerticalBar();
				if (scrollbar != null) {
					scrollbar.addListener(SWT.Selection, this);
				}
				
				getShell().addListener(SWT.Deactivate, this);