Re: JsInterop and constants

On Tuesday, September 27, 2016 at 11:03:17 AM UTC+2, Kirill Prazdnikov wrote:

Hi,

It is not clear why GWT disallow scalar and String constants in JsInterop interfaces
Previously it was

public final class MediaError extends JavaScriptObject {
  public static final int MEDIA_ERR_ABORTED = 1;

Now it is impossible to declare the constant in the API declaration:

@JsType(isNative = true, namespace = JsPackage.GLOBAL)
public interface MediaError {
  @JsProperty int getCode();

  int MEDIA_ERR_ABORTED = 1;
}

[ERROR] Line 11: Native JsType field 'int MediaError.MEDIA_ERR_ABORTED' cannot have initializer.

How can I add the constants ? 
How can I enable scalar constants in @JsType interfaces ?

AIUI, either you map a JS constant to Java, and then you shouldn't use an initializer (but then you cannot use an interface); or you want a Java-only field in that interface (like you had in your JSO previously), and then you need to use @JsOverlay.

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