public ElementPropertiesPanel()
{
cardLayout = new CardLayout();
setLayout(cardLayout);
this.attributeEditorPanel = new VisualAttributeEditorPanel();
this.styleEditorPanel = new StyleEditorPanel();
this.expressionEditorPanel = new ExpressionPropertiesEditorPanel();
this.datasourceCarrier = new JPanel(new BorderLayout());
final JPanel blankPanel = new JPanel();