Enums in Scala with multiple constructor parameters

Question

I am writing my first large Scala program. In the Java equivalent, I have an enum that contains labels and tooltips for my UI controls:

public enum ControlText {
  CANCEL_BUTTON("Cancel", "Cancel the changes and dismiss the dialog"),
  OK_BUTTON("OK", "Save the changes and dismiss the dialog"),
  // ...
  ;

  private final String controlText;
  private final String toolTipText;

  ControlText(String controlText, String toolTipText) {
    this.controlText = controlText;
    this.toolTipText = toolTipText;
  }

  public String getControlText() { return controlText; }
  public String getToolTipText() { return toolTipText; }
}

Never mind the wisdom of using enums for this. There are other places that I want to do similar things.

How can I do this in Scala using scala.Enumeration? The Enumeration.Value class takes only one String as a parameter. Do I need to subclass it?

Thanks.

Answer 1

You could do this which matches how enums are used:

sealed abstract class ControlTextBase
case class ControlText(controlText: String, toolTipText: String)
object OkButton extends ControlText("OK", "Save changes and dismiss")
object CancelButton extends ControlText("Cancel", "Bail!")