827585 - window.getSelection() returns null for hidden iframe

Status: REOPENED

(Core :: DOM: Selection, defect)

Description

[Tim Down]

Attachment: ffbug.zip

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0
Build ID: 20121128204232

Steps to reproduce:

Created an HTML document containing another HTML document in an iframe hidden via CSS display: none and examined the result of calling window.getSelection() in the iframe's document


Actual results:

null was returned


Expected results:

Per spec, since the iframe's document has a defaultView property, a Selection object should be returned. See 

http://dvcs.w3.org/hg/editing/raw-file/tip/editing.html#dom-window-getselection

Comment 1

[Loic]

Attachment: Reporter's testcase

Comment 3

[Boris Zbarsky [:bzbarsky]]

Actually, I guess we should just make the other depend on this one.

In any case, right now selection objects are tied to a presentation and there is no presentation in display:none iframes.  So fixing this bug requires revamping how selections work.  Well, or giving display:none stuff a presshell.

Comment 4

[Dennis Schubert [:denschub]]

P3 from a WebCompat perspective. We've only seen one live site breakage, and we could probably fix this via a site intervention.