Bug 125600 [Field Assist] - popup shell should be resizable with size retained
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
/*
	 * The String containing characters that auto-activate the popup.
	 */
	private String autoActivateString;
	/*
	 * A flag indicating how an accepted proposal should affect the control. One
	 * of PROPOSAL_IGNORE, PROPOSAL_INSERT, or PROPOSAL_REPLACE.
	 */
	private int acceptance;
	/*
	 * A boolean that indicates whether keys events received while the proposal
	 * popup is open should also be propagated to the control.
	 */
	private boolean propagateKeys;
	/*
	 * Integer that indicates the filtering style.
	 */
	private int filterStyle;
	/*
	 * The listener we install on the control.
	 */
	private Listener controlListener;
	/*
	 * The list of listeners who wish to be notified when something significant
	 * happens with the proposals.
	 */
	private ListenerList proposalListeners = new ListenerList();
	/*
	 * Flag that indicates whether the adapter is enabled. In some cases,
	 * adapters may be installed but depend upon outside state.