Re: jsinterop: converting a jre collection to a jsArray

Thomas thanks,

Wow I did this and it works. But it is crazy. Cr is for crazy. Kudos to jsinterop guys though.

@JsType(isNative = true, namespace = JsPackage.GLOBAL, name = "[]")
public interface CrJsArray<T> {

    public void push(T value);

    @JsProperty
    public int getLength();
}

I tried your suggestion to cast and __also works__ (eclipse complains about but with (JavaScriptObject) (Object) my_native_object) it works and it is definitely better.

Questions
1) Is JavaScriptObject scheduled for deprecation?

2) Should a native type be able to extend JavascriptObject. Because right now (2.8pre1) fails at run time. That would make casting a bit saner. Should I report it somewhere?

I tried to look for the reference you gave but I didn't find it. Wrong keywords maybe...

On Thu, May 12, 2016 at 12:20 PM, Thomas Broyer <t.broyer@gmail.com> wrote:

That question came up already in the forum or in GWT-Contrib (try to search the archive), and I seem to recall that Goktug said you could cast @JsType(isNative=true) objects to/from JavaScriptObject, so you could use JsArray (and JsonUtils.safeEval). I think you can also cast to/from an array of @JsType(isNative=true), so if you don't need to alter the size of the JS array you can then use the bracket operators on a Java array (and cast from/to a JavaScriptObject).

This is only out of memory, please double check from the forum archives.

On Thursday, May 12, 2016 at 10:47:51 AM UTC+2, Vassilis Virvilis wrote:

Hi again,

I am trying to convert a jre collection or build a jsArray with a isNative=true type.

Unfortunately this is not possible because JsArray requires JavascriptObject which is invcompatible (complie time error) with native classes.

Any ideas?

I looked on deep dive jsinterop from Ray Cromwell and it says that there is not a clean way for jsinterop1 to align collections. Ok I get that - but there must be a way even if not the nicest/cleanest one.

Otherwise looks like I have to create my own @jsinteroped MyJsArray which looks wrong.

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Vassilis Virvilis

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