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Код

public class EditablePanel extends BaseComposite {

    private Group mainGroup;

    private EditableForm editableForm;

    /**
     * Constructor.
     */
    public EditablePanel(Composite parent, int style) {
        super(parent, style);
        setLayout(new FillLayout());
        init();
    }

    protected void init() {

        mainGroup = new Group(this, SWT.NONE);
        mainGroup.setLayout(new FillLayout(SWT.VERTICAL));

        setMarketData(new Root());
    }

    public void setMarketData(MarketData marketData) {
        
        if (marketData == null) {
            return;
        }

        editableForm = new EmptyForm(mainGroup, SWT.NONE);
        
        if (marketData instanceof Recipient) {
            editableForm = new RecipientForm(mainGroup, SWT.NONE);
        } else if (marketData instanceof Area) {
            editableForm = new AreaForm(mainGroup, SWT.NONE);
        }

        //repaint();
        update();
        redraw();
    }

}