15133 2011-12-09 23:19:46 +0000 Please explain how hidden=true interacts with plugin loading. Should it be treated as display:none? 2012-10-12 16:15:13 +0000 1 1 1 Unclassified WHATWG HTML unspecified Other other RESOLVED FIXED http://www.whatwg.org/specs/web-apps/current-work/#the-hidden-attribute P3 normal Unsorted 1 contributor ian eric ian mike contributor oldest_to_newest 61354 0 contributor 2011-12-09 23:19:46 +0000 Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/editing.html Multipage: http://www.whatwg.org/C#the-hidden-attribute Complete: http://www.whatwg.org/c#the-hidden-attribute Comment: Please explain how hidden=true interacts with plugin loading. Should it be treated as display:none? Posted from: 173.164.128.209 User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.0 Safari/535.11 61356 1 eric 2011-12-09 23:23:15 +0000 See https://bugs.webkit.org/show_bug.cgi?id=56575 for context on how WebKit currently has trouble with hidden=true plugins, since we need to not load display:none plugins: http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2011-November/033732.html but at least that author expects hidden=true to not act like display: none. 63465 2 ian 2012-01-31 22:55:54 +0000 Well first, hidden=true is bogus. hidden="" is a boolean attribute, meaning it's either present or absent, and its value, if any, has to be the same as its name. But that's irrelevant here since this is a legacy page, not a page using the new hidden="" attribute. If we have to address this, I propose doing it by changing the [hidden] rule in ua.css to: [hidden]:not(object):not(embed), ... { } object[hidden], embed[hidden] { width: 0; height: 0; } object[hidden] { overflow: hidden; } ...in the ua.css file. 71064 3 contributor 2012-07-18 18:00:43 +0000 This bug was cloned to create bug 18299 as part of operation convergence. 71972 4 ian 2012-08-09 16:41:02 +0000 I need a way to test whether an <embed> element is instantiating a plugin or not before I can test implementations enough to know what to do here. 76030 5 ian 2012-10-11 19:52:46 +0000 Anne found me this: http://software.hixie.ch/utilities/js/live-dom-viewer/?saved=1836 IE and Gecko play audio but show nothing (display:inline height:0 width:0 as far as I can tell, though neither made it very easy to determine what exactly was going on), Opera plays no audio, WebKit doesn't hide it. I'll go with the Gecko/IE behavior. 76031 6 contributor 2012-10-11 19:55:55 +0000 Checked in as WHATWG revision r7453. Check-in comment: Improve compatibility for <embed hidden> http://html5.org/tools/web-apps-tracker?from=7452&to=7453 76082 7 zcorpan 2012-10-12 11:10:11 +0000 FTR... grep -aPic "<object(\s[^>]*)?\shidden\s*=" web200904 0 $ grep -aPic "<embed(\s[^>]*)?\shidden\s*=" web200904 199