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
}
			boolean ret = super.close();
			notifyPopupClosed();
			return ret;
		}
		/*
		 * Show the currently selected proposal's description in a secondary
		 * popup.
		 */
		private void showProposalDescription() {
			
			
			if (!pendingDescriptionUpdate) {
				
				
				
				
				Runnable runnable = new Runnable() {
					public void run() {
						pendingDescriptionUpdate = true;
						try {
							Thread.sleep(POPUP_DELAY);
						} catch (InterruptedException e) {
						}
						if (!isValid()) {
							return;
						}
						getShell().getDisplay().syncExec(new Runnable() {
							public void run() {