On Thursday, March 28, 2013 8:08:14 PM UTC+1, tomsn wrote:
>
> Hallo,
>
> within my GWT Application I try to execute the following method:
>
> @Override
> public native void drawChart(Element parent)/*-{
> var series = [{
> data: [ { x: 0, y: 40 }, { x: 1, y: 49 } ],
> color: 'steelblue',
> name: 'Dataset_1'
> }];
> var graph = new $wnd.Rickshaw.Graph( {
> element: parent,
> width: 600,
> height: 200,
> series: series,
> renderer: 'bar'
> });
> graph.render();
> }-*/;
>
> The series array initialized at the beginning of the implementation is
> passed to the Rickshaw.Graph constructor.
> The Rickshaw module tests whether the input object *series *is of *type
> Array* and - *fails*.
>
> if (!(series instanceof Array)) throw ....
>
> I have no explanation for that behavior. I thought it's native JavaScript
> code, executed within the browser, so that there should be
> no difference. But indeed, the array created in the method above does not
> pass that instanceof check.
>
>
GWT code runs in an iframe, so its Array is not the same as the Array in
$wnd, which is why "instanceof Array" fails.
Rickshaw.Graph is simply broken.
See
https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/isArray
and
http://perfectionkills.com/instanceof-considered-harmful-or-how-to-write-a-robust-isarray/
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