WheelEvent not working in IE9 when compiled with dart2js

[DartBot]

This issue was originally filed by @bp74

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What steps will reproduce the problem?

void main() {
  document.body.on.mouseWheel.add((WheelEvent event) {
    try {
      print(event.pageX);
      print(event.pageY);
    }
    catch(final e) {
      print("Error");
    }
  });
}

What is the expected output? What do you see instead?

You should be able to receive the WheelEvent and access the properties. In IE9 you get an error that the getter is not available. I started the debugger which is integrated in IE9 and see that the "event" variable has all the fields you expect. But still you can't get it.

The same code compiled with frog works. I also tested events like MouseEvent for "onMouseMove" and those events work fine for dart2js and frog. It's just the WheelEvent.

What version of the product are you using? On what operating system?

Dart Editor Build 8108 32 bit, Windows 7 64 bit.

[DartBot]

This comment was originally written by ngeoffray@google.com

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Comment from Bernhard (not sure why it's not showing up here):

Just testet it with the supported version of Dart Editor (Build 8124) and now it works. There are just 16 revisions between those two versions but it seems we are lucky and this issue is not a problem anymore

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Added Area-Dart2JS, Fixed labels.

[DartBot]

This comment was originally written by @bp74

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Sorry it was my fault, i made a mistake at testing.
Unfortunately this issue is not fixed :( sorry!

[DartBot]

This comment was originally written by ngeoffray@google.com

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Re-opening then :)

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Added Triaged label.

[kasperl]

Removed Priority-Medium label.
Added Priority-High label.

[kasperl]

This could be a DOM issue (like issue #3152). CC'ing Stephen, but it would be great if you could take a look, Nicolas, and figure out if this is a dart2js issue or a DOM issue.

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cc @rakudrama.
Set owner to ngeoffray@google.com.
Added Accepted label.

[DartBot]

This comment was originally written by ngeoffray@google.com

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Stephen, could that be the same problem than:
http://code.google.com/p/dart/issues/detail?id=3152?

[kasperl]

It looks like this is because the getters (get$pageX, get$pageY) that we add to Object.prototype aren't visible on WheelEvent. It probably worked with frog because the event parameter is typed with WheelEvent.

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Set owner to @rakudrama.
Removed Area-Dart2JS label.
Added Area-DOM label.

[DartBot]

This comment was originally written by @bp74

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Maybe issue #2535 is related.
We cannot access the "data" property of ImageData in this task.

[rakudrama]

I see get$pageX as expected, but it does not dispatch to the expected getter.
There is a browser difference:

Object.prototype.toString.call(event$)
IE: "[object MouseWheelEvent]".
Chrome: "[object WheelEvent]".

[rakudrama]

Should be fixed by r8582 / r8585.

[rakudrama]

Verified from latest download.

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Added Verified label.