code: public void setFirstProperty() {
  		if (properties.getItemCount() > 0) {
  			properties.setSelectedIndex(0);
  
  			LinearInterpolator currentValue = (LinearInterpolator) values
  					.get(properties.getSelectedItem());
  			panel.setInterpolator(currentValue);
  		}
  	}
docs: Indicate that the first property should be displayed