1012413 - computed style from an iframe that became display:none after the getComputedStyle call throws NS_ERROR_NOT_AVAILABLE when you try to ask for computed property values (no presshell)

Status: RESOLVED DUPLICATE of bug 1467722

(Core :: DOM: CSS Object Model, defect)

Description

[Oleg]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.137 Safari/537.36

Steps to reproduce:

Go to http://jsfiddle.net/2fEYL/


Actual results:

"Component is not available" error was thrown


Expected results:

"ltr" value of CSS property "direction" should have been returned.

Corresponding issues in jQuery bug tracker – http://bugs.jquery.com/ticket/15098
and wikimedia bug tracker – https://bugzilla.wikimedia.org/show_bug.cgi?id=65373

Comment 1

[Boris Zbarsky [:bzbarsky]]

Oh, and the testcase is basically this:

  <iframe></iframe>
  <script>
    var i = document.querySelector("iframe");
    var c = i.contentWindow.getComputedStyle(i.contentDocument.body);
    i.style.display = "none";
    try {
      alert(c.getPropertyValue("direction"));
    } catch(e) {
      alert("Exception thrown: " + e);
    }
  </script>

Comment 2

[Hallvord R. M. Steen [:hallvors]]

Related to bug 548397 , I presume