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Kam
43acead06d
Follow-up to #69205. After switching adev's COEP to `credentialless`, the cross-origin YouTube iframe in `<docs-video>` loads in Chromium and Safari but not Firefox, whose `credentialless` policy does not extend to nested frames. The result was a COEP error screen instead of the player. Render `<docs-video>` as a lightweight thumbnail facade instead of embedding the iframe directly. The thumbnail is a cross-origin subresource, so it loads under `credentialless` in every browser. `DocViewer` then upgrades the facade to the inline player on hydration in browsers that can load the embed (Chromium, Safari), preserving the previous behavior there. On Firefox the facade stays a plain link that opens the video on YouTube (with autoplay), which replaces the error screen. The thumbnail uses `maxresdefault` and falls back to `hqdefault` when a video has no max-resolution image.
57 lines
1.1 KiB
SCSS
57 lines
1.1 KiB
SCSS
@use '../colors' as colors;
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@mixin docs-video() {
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.docs-video-container {
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iframe {
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border: 0;
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width: 100%;
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border-radius: 0.25rem;
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overflow: hidden;
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aspect-ratio: 16 / 9;
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}
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.docs-video-facade {
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position: relative;
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display: block;
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width: 100%;
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aspect-ratio: 16 / 9;
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border-radius: 0.25rem;
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overflow: hidden;
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cursor: pointer;
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}
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.docs-video-thumbnail {
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width: 100%;
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height: 100%;
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margin: 0;
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object-fit: cover;
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display: block;
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}
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.docs-video-play-button {
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position: absolute;
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inset: 0;
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margin: auto;
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width: 68px;
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height: 48px;
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svg {
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width: 100%;
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height: 100%;
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}
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.docs-video-play-button-bg {
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fill: colors.$gray-800;
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fill-opacity: 0.8;
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transition: fill-opacity 0.2s ease;
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}
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}
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.docs-video-facade:hover .docs-video-play-button-bg,
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.docs-video-facade:focus-visible .docs-video-play-button-bg {
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fill: var(--always-red);
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fill-opacity: 1;
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}
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}
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}
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