jsinterop.annotations

Annotation Type JsOverlay

@Retention(value=RUNTIME)
 @Target(value={METHOD,FIELD})
 @Documented
public @interface JsOverlay

JsOverlay is used to enhance Java API of the native JsTypes and JsFunctions so richer and more Java friendly abstractions could be provided.

  @JsType(isNative=true)
 class Person {
    @JsOverlay
   private static final Person NO_BODY = new Person();

   private String name;
   private String lastName;

    @JsOverlay
   public String getFullName() {
     return (name + " " + lastName).trim();
   }
 }

Note that:

• JsOverlay methods cannot override any existing methods.
• JsOverlay methods should be effectively final.
• JsOverlay methods cannot be called from JavaScript

These restrictions are in place to avoid polymorphism because underneath the original type is not modified and the overlay fields/methods are simply turned into static dispatches.