fix(icon): add :dir fallback #1223
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liamdebeasi
commented
May 26, 2023
| @supports selector(:dir(rtl)) { | ||
| :host(.flip-rtl:dir(rtl)) .icon-inner { | ||
| transform: scaleX(-1); | ||
| } | ||
| :host(.flip-rtl:dir(ltr)) .icon-inner { |
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This is needed for WebKit otherwise the fallback will always cause the icon to be flipped if the document loads in RTL
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It would probably be nice to have this comment in the code.
mapsandapps
approved these changes
May 30, 2023
| @supports selector(:dir(rtl)) { | ||
| :host(.flip-rtl:dir(rtl)) .icon-inner { | ||
| transform: scaleX(-1); | ||
| } | ||
| :host(.flip-rtl:dir(ltr)) .icon-inner { |
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It would probably be nice to have this comment in the code.
sean-perkins
approved these changes
May 30, 2023
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There are a couple things we missed with our first pass of #1210:
:host-contextnor:dirhave no fallback to at least set the dir correctly on page load.@supports selector(:dir(rtl))evaluates totruein Safari <16.4 even though:dirwas supported starting in Safari 16.4. So even if we made a fallback such as above, it would not work on older versions of Safari.Solutions:
isRTLcheck so at least the icon respects the dir on component load-webkit-named-imageand applied the RTL fallback. WebKit browsers that support:dir(rtl)will override this fallback and get the reactive RTL behavior.Safari Bug Example: https://codepen.io/liamdebeasi/pen/eYPXPZY
Browsers that do not support
:dir(rtl)should render a red square. Browsers that do support:dir(rtl)should render a green square only when.squarehasdir="rtl"(which it does in this template.Chrome: Red (Chrome doesn't support :dir yet so this result is fine)
Firefox: Green
Safari 16.4: Green
Safari <16.4: Nothing
Safari <16.4 reports that it supports
:dir(rtl)so it never renders the red fallback. However, it never renders the green color either since it does not actually support:dir(rtl).