Hi Stefan,
maybe I'm able to give you the so called dirty trick/workaround :)
I don't know if it's possible to create a workaround in the frontend but
what about if you use a servlet url pattern like this:
<url-pattern>/image/*.png</url-pattern>
And then increase a global number for each new image call from the
frontend. Something like:
button1.addListener("execute", function(e) {
this.__helpingNumber++;
image.setSource("http://www.qooxdoo.org/image/";
+this.__helpingNumber +".png");
}, this);
That's just an untested idea :)
Regards,
Andreas
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