Bug 125600 [Field Assist] - popup shell should be resizable with size retained
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
public ContentProposalAdapter(Control control,
			IControlContentAdapter controlContentAdapter,
			IContentProposalProvider proposalProvider,
			ILabelProvider labelProvider, KeyStroke keyStroke,
			char[] autoActivationCharacters, boolean propagateKeys,
			int filterStyle, int acceptance) {
		super();
		
		Assert.isNotNull(control);
		Assert.isNotNull(controlContentAdapter);
		this.control = control;
		this.controlContentAdapter = controlContentAdapter;
		
		this.proposalProvider = proposalProvider;
		this.labelProvider = labelProvider;
		this.triggerKeyStroke = keyStroke;
		if (autoActivationCharacters != null)
			this.autoActivateString = new String(autoActivationCharacters);
		this.propagateKeys = propagateKeys;
		this.filterStyle = filterStyle;
		this.acceptance = acceptance;
		addControlListener(control);
	}
	/**
	 * Get the control on which the content proposal adapter is installed.
	 * 
	 * @return the control on which the proposal adapter is installed.
	 */
	public Control getControl() {
		return control;