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Improve the JS script to highlight the current ToC entry #1991

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merged 4 commits into from
Nov 12, 2024

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zecakeh
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@zecakeh zecakeh commented Nov 7, 2024

The code relied on an IntersectionOberver, so the ToC was only updated when a heading was in the viewport.
It meant that if we jumped to a part of the text that has no heading, the ToC would still point to the old entry. This issue can be reproduced by clicking on a link to an endpoint definition, clicking somewhere in the scrollbar, or using the search function from the browser.

The new code looks for the correct heading when the view is scrolled so the correct entry is always selected.

Pull Request Checklist

Preview: https://pr1991--matrix-spec-previews.netlify.app

The ToC is now generated by Hugo.

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
The code relied on an IntersectionOberver, so the ToC was only updated when a heading was in the viewport.
It meant that if we jumped to a part of the text that has no heading, the ToC would still point to the old entry.

The new code looks for the correct heading when the view is scrolled so the correct entry is always selected.

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
@zecakeh zecakeh requested a review from a team as a code owner November 7, 2024 16:35
Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
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Looks great, thanks!

layouts/partials/hooks/body-end.html Outdated Show resolved Hide resolved
@richvdh richvdh enabled auto-merge (squash) November 12, 2024 22:53
@richvdh richvdh merged commit b1f66d1 into matrix-org:main Nov 12, 2024
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@zecakeh zecakeh deleted the toc branch November 13, 2024 09:32
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2 participants