Thanks for the reply!
I'm not sure I understand why "this" evaluates to the plain JS
context. I was going off the documentation here which seems to suggest
you can use "this" in this way:
http://code.google.com/webtoolkit/doc/latest/DevGuideCodingBasicsJSNI.html#methods-fields
Or perhaps you just can't use it for $entry type JSNI?
Having said that, I've updated to a non-static method - silly me. I
did actually try that first but only pasted in my last attempt at
getting some working code. I have tried both of the below now with the
same stack trace as a result. Note, there are not actually any spaces
before the .@ in my code I'm just working around Google Groups
mangling it.
private native void initialiseCallbacks() /*-{
var that = this;
$wnd.js_callback =
$entry(that [email protected]::callback());
}-*/;
and
private native void initialiseCallbacks(PlayerImpl pl) /*-{
$wnd.js_callback = $entry(pl [email protected]::callback());
}-*/;
On Mar 22, 5:17 pm, Thomas Broyer <[email protected]> wrote:
> On Mar 22, 4:23 pm, ChrisK <[email protected]> wrote:
>
> > My above code got a little mangled along the way, the $entry part has
> > "(this", followed by a full stop, followed by
> > "@com.mine.PlayerImpl::callback());"
>
> And that's the problem: "this" is a special keyword and will evaluate
> to the "this" context of the calling "plain JS" code, whereas you'd
> want it to be some PlayerImpl instance.
>
> There are several ways to fix this:
> // evaluates "this" right now
> var that = this;
> // then uses "that"
> $wnd.js_callback = $entry([email protected]::callback());
>
> or pass the instance as an argument to the method and then use its
> name.
>
> But there's another bug in your code: there's no "this" in a "static"
> method!
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