Contact emailsschen...@chromium.org ExplainerNone
Specificationhttps://www.w3.org/TR/css-pseudo-4/#highlight-selectors SummaryChromium currently checks all selection highlight colors against the text color and inverts the highlight color if it matches the text. Hence, author-defined ::selection CSS properties may be modified by the browser despite explicit author intent. For example, a CSS rule "::selection { color: cyan; background: cyan; }" the background is inverted and red color is used. In https://github.com/w3c/csswg-drafts/issues/6150 the CSS Working Group resolved to disallow the chromium behavior. We propose to implement this spec change and bring chromium into compatibility with other browsers. Blink componentBlink>CSS <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS> TAG reviewNone TAG review statusNot applicable Risks Interoperability and Compatibility Low risk. Gecko and WebKit both respect author colors from ::selection already. The change makes chromium compatible. It is highly unlikely that authors are depending on chromium behavior given it is hard to predict and the number of people who have looked at the workarounds. Note the workarounds (adding some transparency) will not be broken by the change. *Gecko*: Shipped *WebKit*: Shipped *Web developers*: https://stackoverflow.com/questions/14970891/css-selection-color-behaving-strangely-on-chrome *Other signals*: WebView application risks Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications? None Debuggability Improved because the rendered result now matches the colors specified by authors and reported in DevTools. Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?Yes Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ?Yes Flag name on chrome://flagsNone Finch feature nameSelectionRespectsColors Non-finch justification The change has been behind Experimental Web Platform Features for 4 months, with no issues reported. Requires code in //chrome?False Tracking bughttps://issues.chromium.org/issues/40771258 Estimated milestones Shipping on desktop 127 Shipping on Android 127 Anticipated spec changes Open questions about a feature may be a source of future web compat or interop issues. Please list open issues (e.g. links to known github issues in the project for the feature specification) whose resolution may introduce web compat/interop risk (e.g., changing to naming or structure of the API in a non-backward-compatible way). None Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5657973985640448?gate=6583848377253888 -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAGsbWzRMGvrzVNmHyJzbgw-fjwBi%2BJm8O0UCt-ZPRF%2BdBN_ddQ%40mail.gmail.com.
