I’m happy to hear this - we have an interest in using this feature in the browser chrome.
We usually load chrome://global/skin/global.css as a link in the Shadow DOM for our chrome Custom Elements and rely on sync stylesheet loading from the (chrome-only) prototype cache, but would like to stop relying on this as it has led to bugs like Bug 1590280 (see https://bugzilla.mozilla.org/show_bug.cgi?id=1590280#c27 for more details). Thanks, Brian > On Dec 5, 2019, at 2:03 PM, Erik Nordin <enor...@mozilla.com> wrote: > > Summary: <https://en.wikipedia.org/wiki/Elevator_pitch>Many web components > use the functionality of Shadow DOM > <https://w3c.github.io/webcomponents/spec/shadow/>. Currently, In order for > a stylesheet to take effect in a Shadow DOM, it must be specified using an > HTML <style> or <link> element within each shadow root > <https://developer.mozilla.org/en-US/docs/Web/API/ShadowRoot>. > Constructable Stylesheet Objects (CSO) provides an API to create reusable > stylesheet objects directly from script. This provides a convenient means > to create stylesheet references without being tied to a DOM node. CSOs can > then be adopted by, and shared by any number of shadow roots. > > Bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1520690 > > Standard: https://wicg.github.io/construct-stylesheets/ > > Discussion: https://github.com/mozilla/standards-positions/issues/103 > > Platform Coverage: All platforms > > Preference: Feature flagged until release: > layout.css.constructable-stylesheets.enabled > > DevTools Bug: TBD what, if anything, is needed. > > Other browsers: > > - > > Chrome: Shipped since version 73 > - > > Safari: Not implemented yet. > Discussed design concerns that we will address before shipping the > feature: > - > > https://github.com/WICG/construct-stylesheets/issues/45 > - > > > > https://github.com/mozilla/standards-positions/issues/103#issuecomment-494181931 > > Web-platform-tests: > https://wpt.fyi/results/css/cssom/CSSStyleSheet-constructable.html > > Secure Contexts: Enabled for both secure and insecure contexts. > > Sandboxed iframes: This feature will be enabled by default in sandboxed > iframes. > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
