The documentation said that you should not use JSInterop in production.
Could you specify what can be used in production and what part cannot?
Thank you
Michael
Am Mittwoch, 29. Oktober 2014 16:44:42 UTC+1 schrieb Ray Cromwell:
>
> Whether you use $wnd.SomeJsObject or SomeJsObject depends on the
> following:
> 1) whether you want 'instanceof' to only work on objects that come
> from the host page
> 2) whether or not you're going to extend/subtype JS objects
>
> In most cases, you want "$wnd.SomeJsObject", however there are cases
> where you don't
>
> 1) if you loaded some hand written JS into 'window' instead of $wnd
> 2) if you are referring to inbuilt native JS objects like Window or
> HTMLDivElement
>
> If you do the following
>
> @JsType(prototype="$wnd.Window")
> interface Window {
> ...
> }
>
> Window w = someIframe.window();
>
> Then w instanceof Window => false. Why? Because the GWT compiler will
> emit "w instanceof $wnd.Window", but your checking for Window objects
> from ANY location.
>
>
> So you see, a prefix of $wnd leads to an ABSOLUTE instanceof operator.
> If you don't specify $wnd, then the instanceof check is relative. So
> for example, it will just check if your constructor is 'Window', no
> matter which context where it came from.
>
> In general, native DOM elements == no $wnd prefix, JS libraries loaded
> in host page == $wnd prefix
>
>
> On Wed, Oct 29, 2014 at 7:04 AM, confile
> <[email protected] <javascript:>> wrote:
> > thank oyu Jens. What about my first question:
> >
> > Is it @JsType(prototype="SomeJsObject") or
> > @JsType(prototype="$wnd.SomeJsObject") ?
> >
> > Best
> > Michael
> >
> > Am Mittwoch, 29. Oktober 2014 14:45:33 UTC+1 schrieb Jens:
> >>>
> >>> Consider an interface
> >>>
> >>> @JsType
> >>> interface Test {
> >>> void do();
> >>> }
> >>>
> >>> How do I instantiate such an interface?
> >>
> >>
> >> For now you need to use a JSNI factory method. May it be in a static
> inner
> >> class or a dedicated factory class for all your JsTypes.
> >>
> >> With GWT 3.0 (and Java8 support) you can use a static factory method on
> >> the interface which uses GWT.jsni() or GWT.js() or whatever name that
> >> special GWT method will have. So in GWT 3.0 it will probably look like:
> >>
> >> @JsType
> >> interface Test {
> >> static Test create() { return GWT.js("new Test()"); }
> >> void do();
> >> }
> >>
> >>
> >> -- J.
> >
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