100 lines
1.9 KiB
Plaintext
100 lines
1.9 KiB
Plaintext
---
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import type { Heading } from '@/lib/markdoc/types'
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type Props = {
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headings: Heading[]
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min?: number
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level?: number
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}
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const { headings, min = 3, level = 3 } = Astro.props
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const entries = headings.filter((heading) => heading.level <= level)
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---
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{entries.length >= min && (
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<nav class="toc" aria-labelledby="toc-title">
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<h2 class="title" id="toc-title">
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Contents
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</h2>
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<ol>
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{entries.map((heading) => (
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<li class:list={['entry', `entry--${heading.level}`]}>
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<a href={`#${heading.id}`}>
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<span class="n" aria-hidden="true" />
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<span class="label">{heading.text}</span>
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</a>
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</li>
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))}
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</ol>
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</nav>
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)}
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<style>
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.toc {
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@mixin border-t var(--border-card), solid, var(--color-border-strong);
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counter-reset: toc;
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position: sticky;
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top: calc(var(--layout-header-height) + var(--size-10));
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}
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.title {
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@mixin typo_label;
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@mixin my var(--size-0);
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@mixin py var(--size-4);
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@mixin border-b var(--border-hairline), solid, var(--color-border-normal);
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font-size: var(--type--2);
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}
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ol {
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list-style: none;
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}
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a {
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@mixin py var(--size-3);
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@mixin border-b var(--border-hairline), solid, var(--color-border-subtle);
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display: grid;
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grid-template-columns: 4ch minmax(0, 1fr);
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font-family: var(--font-mono);
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font-size: var(--type--1);
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line-height: var(--leading-2);
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color: var(--color-text-primary);
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text-decoration: none;
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&:hover,
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&:focus-visible {
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background-color: var(--color-surface-hover);
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}
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}
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.n {
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color: var(--color-text-quiet);
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}
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.entry--2 {
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counter-increment: toc;
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& .n {
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&::before {
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content: counter(toc, upper-roman);
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}
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}
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}
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.entry--3 {
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& a {
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@mixin ps var(--size-8);
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}
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& .label {
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color: var(--color-text-secondary);
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}
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& .n {
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&::before {
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content: '⟫';
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}
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}
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}
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</style>
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