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Fix TOC hierarchy on floating nav #556

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Dec 21, 2022
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5 changes: 5 additions & 0 deletions components/utilities/floatingNav.js
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,9 @@ const useHeadingsData = (slug) => {
)
);

// Remove the first heading here, since we don't want to show the main title on the TOC
headingElements.shift();

const newNestedHeadings = getNestedHeadings(headingElements);
setNestedHeadings(newNestedHeadings);
}, [slug]);
Expand All @@ -25,6 +28,7 @@ const getNestedHeadings = (headingElements) => {

for (const index in headingElements) {
const ele = headingElements[index];

if (ele.getElementsByTagName === undefined) {
continue;
}
Expand Down Expand Up @@ -128,6 +132,7 @@ const Headings = ({ headings, activeId }) => {
// For example, we could have [H1, H2, H3] but also [H1, H4],
// and we want the indentation to acommodate for these situations.
const uniqueHierarchies = [...new Set(headings.map((item) => item.level))];

const sortedHeadings = uniqueHierarchies.map((hierarchy, index) =>
headings.filter((heading) => {
if (heading.level === hierarchy) {
Expand Down
13 changes: 6 additions & 7 deletions components/utilities/floatingNav.module.css
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
}

.List {
@apply sticky top-24 m-0 list-none overflow-y-auto overflow-x-hidden;
@apply sticky top-24 m-0 pl-6 list-none overflow-y-auto overflow-x-hidden;
max-height: calc(100vh - (6em * 2));
}

Expand All @@ -21,15 +21,10 @@

/* Contents Title */
.ListTitle {
@apply pt-6 pl-6 uppercase font-semibold tracking-widest;
@apply pt-6 uppercase font-semibold tracking-widest;
@apply text-gray-60 !important;
}

/* Hide the first h1 on the page, as it's the page title */
.List li:nth-child(2) {
@apply hidden;
}

/* Styles for the active item on the floating nav */
:global(.dark) .activeLink {
@apply text-white !important;
Expand All @@ -45,6 +40,10 @@
}

/* Paddings for different title hierarchies */
.List li[data-hierarchy="0"] {
@apply pl-0;
}

.List li[data-hierarchy="1"] {
@apply pl-6;
}
Expand Down