[Caja] Issue 1278 in google-caja: window.onload handler never gets called

[google-caja]

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 1278 by tobie.langel: window.onload handler never gets called
http://code.google.com/p/google-caja/issues/detail?id=1278

What revision of the cajoler exhibits the problem?  On what browser and OS?

SVN revision 4293 with patch http://codereview.appspot.com/2206045/ applied.

Firefox 3.5.13 on Mac OS 10.5.8

What steps will reproduce the problem?

set:

    window.onload = function() { /* dostuff*/ };

handler never gets called.

Looks like the testing going on in domita.js around line 3348 isn't  
behaving as expected:

  var onload = ((___.canRead(imports, '$v')
                     && ___.canCallPub(imports.$v, 'ros')
                     && imports.$v.ros('onload'))
                    || (imports.window &&
                        ___.readPub(imports.window, 'onload')));

Especially, ___.canRead(imports, '$v') returns false.