Skip to site navigation (Press enter)
[dev-platform] Make
and
behave more like
for image loading.</span></a></span> </h1> <p class="darkgray font13"> <span class="sender pipe"><a href="/search?l=dev-platform@mozilla.org&q=from:%22Andreas+Farre%22" rel="nofollow"><span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">Andreas Farre</span></span></a></span> <span class="date"><a href="/search?l=dev-platform@mozilla.org&q=date:20220629" rel="nofollow">Wed, 29 Jun 2022 08:40:14 -0700</a></span> </p> </div> <div itemprop="articleBody" class="msgBody"> <!--X-Body-of-Message--> <pre>I'm currently working on implementing Opaque Response Blocking (ORB), and one part I'm going to try out is to have <embed> and <object> elements load images in synthetic documents, just like how <iframe> does (<a rel="nofollow" href="https://phabricator.services.mozilla.com/D148117">https://phabricator.services.mozilla.com/D148117</a>). This makes the ORB implementation simpler, since I can then handle cross origin requests just like how we do process switching for cross origin documents.</pre><pre> This is not really how spec describes image loading for <embed> and <object>, but initially I will try to adhere to spec as much as possible, but there's also discussions changing the spec <a rel="nofollow" href="https://github.com/whatwg/html/issues/7939">https://github.com/whatwg/html/issues/7939</a>. This is currently in review at <a rel="nofollow" href="https://phabricator.services.mozilla.com/D148117">https://phabricator.services.mozilla.com/D148117</a> and I'm hoping to land it soon. The number of tests that I've needed to change have turned out to be fairly low <a rel="nofollow" href="https://phabricator.services.mozilla.com/D148118">https://phabricator.services.mozilla.com/D148118</a>, and hopefully the visibility of this change to web pages should be minimal. One place where there will be a known observable difference is in DevTools, where there now will be a browsing context/document as a child to either the <embed> or <object> element. My intention is to have this turned on for Nightly only, with prefs in place to quickly have it turned off. That pref is: browser.opaqueResponseBlocking.syntheticBrowsingContext I've also added a bonus pref that depends on the previous to turn off the spec adhering hacks (essentially to hide browsing contexts from `Window.frames`, named targeting etc). That pref is: browser.opaqueResponseBlocking.syntheticBrowsingContext.filter Since this is a bit on the experimental side, I'd be very happy if I could have your help to keep extra eyes on any breakage that happens due to this. I'll make sure to send a follow-up as soon as I land this. Opinions before landing are of course also welcome! -- farre -- You received this message because you are subscribed to the Google Groups "dev-platform@mozilla.org" group. To unsubscribe from this group and stop receiving emails from it, send an email to dev-platform+unsubscr...@mozilla.org. To view this discussion on the web visit <a rel="nofollow" href="https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CACvK8HLjHRMfxisR9Lez09LVGBhM2p%2Bh%3DA5uU%3DnPvXp7fE%2BSvQ%40mail.gmail.com">https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CACvK8HLjHRMfxisR9Lez09LVGBhM2p%2Bh%3DA5uU%3DnPvXp7fE%2BSvQ%40mail.gmail.com</a>. </pre> </div> <div class="msgButtons margintopdouble"> <ul class="overflow"> <li class="msgButtonItems"><a class="button buttonleft " accesskey="p" href="msg00371.html">Previous message</a></li> <li class="msgButtonItems textaligncenter"><a class="button" accesskey="c" href="index.html#00373">View by thread</a></li> <li class="msgButtonItems textaligncenter"><a class="button" accesskey="i" href="maillist.html#00373">View by date</a></li> <li class="msgButtonItems textalignright"><a class="button buttonright " accesskey="n" href="msg00375.html">Next message</a></li> </ul> </div> <a name="tslice"></a> <div class="tSliceList margintopdouble"> <ul class="icons monospace"> </ul> </div> <div class="overflow msgActions margintopdouble"> <div class="msgReply" > <h2> Reply via email to </h2> <form method="POST" action="/mailto.php"> <input type="hidden" name="subject" value="[dev-platform] Make <embed> and <object> behave more like <iframe> for image loading."> <input type="hidden" name="msgid" value="CACvK8HLjHRMfxisR9Lez09LVGBhM2p+h=A5uU=nPvXp7fE+SvQ@mail.gmail.com"> <input type="hidden" name="relpath" value="dev-platform@mozilla.org/msg00373.html"> <input type="submit" value=" Andreas Farre "> </form> </div> </div> </div> <div class="aside" role="complementary"> <div class="logo"> <a href="/"><img src="/logo.png" width=247 height=88 alt="The Mail Archive"></a> </div> <form class="overflow" action="/search" method="get"> <input type="hidden" name="l" value="dev-platform@mozilla.org"> <label class="hidden" for="q">Search the site</label> <input class="submittext" type="text" id="q" name="q" placeholder="Search dev-platform"> <input class="submitbutton" name="submit" type="image" src="/submit.png" alt="Submit"> </form> <div class="nav margintop" id="nav" role="navigation"> <ul class="icons font16"> <li class="icons-home"><a href="/">The Mail Archive home</a></li> <li class="icons-list"><a href="/dev-platform@mozilla.org/">dev-platform - all messages</a></li> <li class="icons-about"><a href="/dev-platform@mozilla.org/info.html">dev-platform - about the list</a></li> <li class="icons-expand"><a href="/search?l=dev-platform@mozilla.org&q=subject:%22%5C%5Bdev%5C-platform%5C%5D+Make+%3Cembed%3E+and+%3Cobject%3E+behave+more+like+%3Ciframe%3E+for+image+loading.%22&o=newest&f=1" title="e" id="e">Expand</a></li> <li class="icons-prev"><a href="msg00371.html" title="p">Previous message</a></li> <li class="icons-next"><a href="msg00375.html" title="n">Next message</a></li> </ul> </div> <div class="listlogo margintopdouble"> </div> <div class="margintopdouble"> </div> </div> </div> <div class="footer" role="contentinfo"> <ul> <li><a href="/">The Mail Archive home</a></li> <li><a href="/faq.html#newlist">Add your mailing list</a></li> <li><a href="/faq.html">FAQ</a></li> <li><a href="/faq.html#support">Support</a></li> <li><a href="/faq.html#privacy">Privacy</a></li> <li class="darkgray">CACvK8HLjHRMfxisR9Lez09LVGBhM2p+h=A5uU=nPvXp7fE+SvQ@mail.gmail.com</li> </ul> </div> </body> </html> <script>(function(){function c(){var b=a.contentDocument||a.contentWindow.document;if(b){var d=b.createElement('script');d.innerHTML="window.__CF$cv$params={r:'9ca190a9bbe079f3',t:'MTc3MDQ1MzQ0NA=='};var a=document.createElement('script');a.src='/cdn-cgi/challenge-platform/scripts/jsd/main.js';document.getElementsByTagName('head')[0].appendChild(a);";b.getElementsByTagName('head')[0].appendChild(d)}}if(document.body){var a=document.createElement('iframe');a.height=1;a.width=1;a.style.position='absolute';a.style.top=0;a.style.left=0;a.style.border='none';a.style.visibility='hidden';document.body.appendChild(a);if('loading'!==document.readyState)c();else if(window.addEventListener)document.addEventListener('DOMContentLoaded',c);else{var e=document.onreadystatechange||function(){};document.onreadystatechange=function(b){e(b);'loading'!==document.readyState&&(document.onreadystatechange=e,c())}}}})();</script>