Bug 182505 [FieldAssist] API - ContentProposalAdapter needs hasProposalPopupFocus() method
Please implement a method ContentProposalAdapter.hasProposalPopupFocus() like org.eclipse.jface.text.contentassist.ContentAssistant.hasProposalPopupFocus(). The method should return a boolean whether the content assistant proposal popup has the focus or not.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
/*
	 * Check that the control and content adapter are valid.
	 */
	private boolean isValid() {
		return control != null && !control.isDisposed()
				&& controlContentAdapter != null;
	}
	/*
	 * Record the control's cursor position.
	 */
	private void recordCursorPosition() {
		if (isValid()) {
			insertionPos = getControlContentAdapter()
					.getCursorPosition(control);
		}
	}
	/*
	 * Get the proposals from the proposal provider. Gets all of the proposals
	 * without doing any filtering.
	 */
	private IContentProposal[] getProposals() {
		if (proposalProvider == null || !isValid()) {
			return null;
		}
		if (DEBUG) {
			System.out.println(">>> obtaining proposals from provider"); 
		}
		int position = insertionPos;
		if (position == -1) {
			position = getControlContentAdapter().getCursorPosition(