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
Thread t = new Thread(runnable);
				t.start();
			}
		}
		/*
		 * Accept the current proposal.
		 */
		private void acceptCurrentProposal() {
			
			
			
			
			IContentProposal proposal = getSelectedProposal();
			close();
			proposalAccepted(proposal);
		}
		/*
		 * Request the proposals from the proposal provider, and recompute any
		 * caches. Repopulate the popup if it is open.
		 */
		private void recomputeProposals(String filterText) {
			IContentProposal[] allProposals = getProposals();
			
			
			
			if (allProposals.length == 0) {
				proposals = allProposals;
				close();
			} else {