Re: JsInterop: Casting native javascript objects in gwt

It seems the generated function com_google_gwt_lang_Cast_canCast__Ljava_lang_Object_2Lcom_google_gwt_core_client_JavaScriptObject_2Z only supports strings, maps, numbers and booleans.

function com_google_gwt_lang_Cast_canCast__Ljava_lang_Object_2Lcom_google_gwt_core_client_JavaScriptObject_2Z(src_0, dstId){

  return typeof src_0 === 'string' && !!com_google_gwt_lang_Cast_stringCastMap[dstId]
      || src_0.java_lang_Object_castableTypeMap && !!src_0.java_lang_Object_castableTypeMap[dstId]
      || typeof src_0 === 'number' && !!com_google_gwt_lang_Cast_doubleCastMap[dstId]
      || typeof src_0 === 'boolean' && !!com_google_gwt_lang_Cast_booleanCastMap[dstId];

}

/Brian

Den mandag den 26. oktober 2015 kl. 13.01.40 UTC+1 skrev Brian Pedersen:

Thank's for pointing that out. So i switched to the new annotations in jsinterop.annotations and activated the new mode with -jsInteropMode JS_RC.

The cast still doesn't work though :(

Instead of a java.lang.ClassCastException, I now get a  Uncaught [object Object] during the cast.

Once again, everything works if I use the concrete type and remove the cast.

POM: https://github.com/bitwerk/jspoc/blob/master/pom.xml

Javascript: https://github.com/bitwerk/jspoc/blob/master/src/main/webapp/jspoc.html

GWT: https://github.com/bitwerk/jspoc/tree/master/src/main/java/dk/bitwerk/client

/Brian

Den mandag den 26. oktober 2015 kl. 12.29.21 UTC+1 skrev Jens:

I am using GWT 2.8.0-SNAPSHOT, but the new annotations does not work for me.

I tried using @JsType(namespace = "acme", name = "MyJavaScriptObject"), as described in the new version of the JsInterop document, but apparently the namespace and name attributes are not there in the jar file.

Same thing with the @JsExport and @JsNamespace, I currently have to use them or things stop working.

The new annotations have a different package: jsinterop.annotations. Also @JsExport does not exist anymore in the new JsInterop version, you just use @JsType.

To activate the new annotations you also have to change the JsInterop mode via -jsInteropMode JS_RC

-- J.

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