Sounds ok to add it prefixed. - Maciej
On Oct 1, 2013, at 4:53 PM, James Craig <jcr...@apple.com> wrote: > Follow-up question: Since this hasn’t made it into the CSS4 spec yet, should > we temporarily use “-webkit-alt” for the property name? I know there has been > a push to move away from vendor prefixes lately, so if there are no > objections, I propose we use the unprefixed version. > > On Sep 30, 2013, at 10:08 PM, James Craig <jcr...@apple.com> wrote: > >> AX: Implement CSS -webkit-alt property >> https://bugs.webkit.org/show_bug.cgi?id=120188 >> >> This is blocking 20+ bugs on one of our higher profile content sites and >> we’d like to start work on it. To clarify, the problem is that with CSS >> generated content in pseudo-elements like this: >> >> .expandable::before { content: "\25BA"; /* a.k.a. ► */ } >> >> …there is no way to prevent VoiceOver from speaking the literal character >> description, “right pointing black pointer.” If this were an actual DOM >> node, we could hang some ARIA attributes on it, but there is no node for >> pseudo-elements, so the property has to be defined in CSS. >> >> The CSS Working Group discussion indicates the editors (Tab from Google, and >> Elika from Mozilla) are generally on board with the concept of accessible >> text alternatives for CSS generated content and Tab suggested the property >> name. It is not in a CSS4 draft yet, but some usage examples are below. >> >> Rendering a decorative disclosure triangle on a "collapsed” ARIA treeitem: >> >> [aria-expanded="false”]::before { >> content: "\25BA"; /* a.k.a. ► , literally “right pointing black >> pointer” */ >> alt: ""; /* aria-expanded="false" already in DOM, so this >> pseudo-element is decorative */ >> } >> >> And this, where a style indicates new content, screen readers can speak >> “New” instead of “shadowed white star”: >> >> [data-new]::after { >> content: "\2730”; /* a.k.a. ✰ , literally “shadowed white star” >> */ >> alt: attr(data-new); /* allows for localized content from the >> DOM, e.g. @data-new="New!" */ >> } >> >> Any questions or concerns? >> >> Thanks, >> James >> >> >> PS. Related to this one is bug 122138, where the “alt” can be specified >> inline after url() image content: >> >> AX: WebKit does not expose text alternative of CSS generated image content >> https://bugs.webkit.org/show_bug.cgi?id=122138 >> >> .new::after { >> content: url(./star.png), "New!"; >> } >> >> >> _______________________________________________ >> webkit-dev mailing list >> webkit-dev@lists.webkit.org >> https://lists.webkit.org/mailman/listinfo/webkit-dev > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > https://lists.webkit.org/mailman/listinfo/webkit-dev _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org https://lists.webkit.org/mailman/listinfo/webkit-dev
