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
if (leftProposedBounds.intersects(parentBounds)) {
						if (rightProposedBounds.x - parentBounds.x >= parentBounds.x
								- leftProposedBounds.x) {
							rightProposedBounds.x = parentBounds.x
									+ parentBounds.width
									+ PopupDialog.POPUP_HORIZONTALSPACING;
							proposedBounds = rightProposedBounds;
						} else {
							leftProposedBounds.width = parentBounds.x
									- POPUP_HORIZONTALSPACING
									- leftProposedBounds.x;
							proposedBounds = leftProposedBounds;
						}
					} else {
						
						proposedBounds = leftProposedBounds;
					}
				} else {
					
					proposedBounds = rightProposedBounds;
				}
				getShell().setBounds(proposedBounds);
			}
			
			/*
			 * (non-Javadoc)
			 * @see org.eclipse.jface.dialogs.PopupDialog#getForeground()
			 */
			protected Color getForeground() {
				return control.getDisplay().