collapsible toc

quartz/components/Body.tsx

@@ -4,9 +4,9 @@ import clipboardStyle from './styles/clipboard.scss'
 import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 
 function Body({ children }: QuartzComponentProps) {
-  return <article>
+  return <div id="quartz-body">
     {children}
-  </article>
+  </div>
 }
 
 Body.afterDOMLoaded = clipboardScript

quartz/components/Content.tsx

@@ -5,7 +5,7 @@ import { toJsxRuntime } from "hast-util-to-jsx-runtime"
 function Content({ tree }: QuartzComponentProps) {
   // @ts-ignore (preact makes it angry)
   const content = toJsxRuntime(tree, { Fragment, jsx, jsxs, elementAttributeNameCase: 'html' })
-  return content
+  return <article>{content}</article>
 }
 
 export default (() => Content) satisfies QuartzComponentConstructor

quartz/components/TableOfContents.tsx

@@ -2,6 +2,9 @@ import { QuartzComponentConstructor, QuartzComponentProps } from "./types"
 import legacyStyle from "./styles/legacyToc.scss"
 import modernStyle from "./styles/toc.scss"
 
+// @ts-ignore
+import script from "./scripts/toc.inline"
+
 interface Options {
   layout: 'modern' | 'legacy'
 }
@@ -10,56 +13,49 @@ const defaultOptions: Options = {
   layout: 'modern'
 }
 
-export default ((opts?: Partial<Options>) => {
-  const layout = opts?.layout ?? defaultOptions.layout
-  function TableOfContents({ fileData }: QuartzComponentProps) {
-    if (!fileData.toc) {
-      return null
-    }
+function TableOfContents({ fileData }: QuartzComponentProps) {
+  if (!fileData.toc) {
+    return null
+  }
 
-    return <details class="toc" open>
-      <summary><h3>Table of Contents</h3></summary>
+  return <>
+    <button type="button" id="toc">
+      <h3>Table of Contents</h3>
+      <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="fold">
+        <polyline points="6 9 12 15 18 9"></polyline>
+      </svg>
+    </button>
+    <div id="toc-content">
       <ul>
         {fileData.toc.map(tocEntry => <li key={tocEntry.slug} class={`depth-${tocEntry.depth}`}>
           <a href={`#${tocEntry.slug}`} data-for={tocEntry.slug}>{tocEntry.text}</a>
         </li>)}
       </ul>
-    </details>
-  }
-
-  TableOfContents.css = layout === "modern" ? modernStyle : legacyStyle
-
-  if (layout === "modern") {
-    TableOfContents.afterDOMLoaded = `
-const bufferPx = 150
-const observer = new IntersectionObserver(entries => {
-  for (const entry of entries) {
-    const slug = entry.target.id
-    const tocEntryElement = document.querySelector(\`a[data-for="$\{slug\}"]\`)
-    const windowHeight = entry.rootBounds?.height
-    if (windowHeight && tocEntryElement) {
-      if (entry.boundingClientRect.y < windowHeight) {
-        tocEntryElement.classList.add("in-view")
-      } else {
-        tocEntryElement.classList.remove("in-view")
-      }
-    }
-  }
-})
-
-function init() {
-  const headers = document.querySelectorAll("h1[id], h2[id], h3[id], h4[id], h5[id], h6[id]")
-  headers.forEach(header => observer.observe(header))
+    </div>
+  </>
 }
+TableOfContents.css = modernStyle
+TableOfContents.afterDOMLoaded = script
 
-init()
-
-document.addEventListener("spa_nav", (e) => {
-  observer.disconnect()
-  init()
-})
-`
+function LegacyTableOfContents({ fileData }: QuartzComponentProps) {
+  if (!fileData.toc) {
+    return null
   }
 
-  return TableOfContents
+  return <details id="toc" open>
+    <summary>
+      <h3>Table of Contents</h3>
+    </summary>
+    <ul>
+      {fileData.toc.map(tocEntry => <li key={tocEntry.slug} class={`depth-${tocEntry.depth}`}>
+        <a href={`#${tocEntry.slug}`} data-for={tocEntry.slug}>{tocEntry.text}</a>
+      </li>)}
+    </ul>
+  </details>
+}
+LegacyTableOfContents.css = legacyStyle
+
+export default ((opts?: Partial<Options>) => {
+  const layout = opts?.layout ?? defaultOptions.layout
+  return layout === "modern" ? TableOfContents : LegacyTableOfContents
 }) satisfies QuartzComponentConstructor

quartz/components/scripts/clipboard.inline.ts

@@ -3,27 +3,29 @@ const svgCopy =
 const svgCheck =
   '<svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true"><path fill-rule="evenodd" fill="rgb(63, 185, 80)" d="M13.78 4.22a.75.75 0 010 1.06l-7.25 7.25a.75.75 0 01-1.06 0L2.22 9.28a.75.75 0 011.06-1.06L6 10.94l6.72-6.72a.75.75 0 011.06 0z"></path></svg>'
 
-const els = document.getElementsByTagName("pre")
-for (let i = 0; i < els.length; i++) {
-  const codeBlock = els[i].getElementsByTagName("code")[0]
-  const source = codeBlock.innerText.replace(/\n\n/g, "\n")
-  const button = document.createElement("button")
-  button.className = "clipboard-button"
-  button.type = "button"
-  button.innerHTML = svgCopy
-  button.ariaLabel = "Copy source"
-  button.addEventListener("click", () => {
-    navigator.clipboard.writeText(source).then(
-      () => {
-        button.blur()
-        button.innerHTML = svgCheck
-        setTimeout(() => {
-          button.innerHTML = svgCopy
-          button.style.borderColor = ""
-        }, 2000)
-      },
-      (error) => console.error(error),
-    )
-  })
-  els[i].prepend(button)
-}
+document.addEventListener("nav", () => {
+  const els = document.getElementsByTagName("pre")
+  for (let i = 0; i < els.length; i++) {
+    const codeBlock = els[i].getElementsByTagName("code")[0]
+    const source = codeBlock.innerText.replace(/\n\n/g, "\n")
+    const button = document.createElement("button")
+    button.className = "clipboard-button"
+    button.type = "button"
+    button.innerHTML = svgCopy
+    button.ariaLabel = "Copy source"
+    button.addEventListener("click", () => {
+      navigator.clipboard.writeText(source).then(
+        () => {
+          button.blur()
+          button.innerHTML = svgCheck
+          setTimeout(() => {
+            button.innerHTML = svgCopy
+            button.style.borderColor = ""
+          }, 2000)
+        },
+        (error) => console.error(error),
+      )
+    })
+    els[i].prepend(button)
+  }
+})

quartz/components/scripts/spa.inline.ts

@@ -30,7 +30,7 @@ const getOpts = ({ target }: Event): { url: URL, scroll?: boolean } | undefined
 }
 
 function notifyNav(slug: string) {
-  const event = new CustomEvent("spa_nav", { detail: { slug } })
+  const event = new CustomEvent("nav", { detail: { slug } })
   document.dispatchEvent(event)
 }
 
@@ -96,6 +96,7 @@ function createRouter() {
       return
     })
   }
+
   return new class Router {
     go(pathname: string) {
       const url = new URL(pathname, window.location.toString())
@@ -113,6 +114,7 @@ function createRouter() {
 }
 
 createRouter()
+notifyNav(document.body.dataset.slug!)
 
 if (!customElements.get('route-announcer')) {
   const attrs = {

quartz/components/scripts/toc.inline.ts

@@ -0,0 +1,35 @@
+const bufferPx = 150
+const observer = new IntersectionObserver(entries => {
+  for (const entry of entries) {
+    const slug = entry.target.id
+    const tocEntryElement = document.querySelector(`a[data-for="${slug}"]`)
+    const windowHeight = entry.rootBounds?.height
+    if (windowHeight && tocEntryElement) {
+      if (entry.boundingClientRect.y < windowHeight) {
+        tocEntryElement.classList.add("in-view")
+      } else {
+        tocEntryElement.classList.remove("in-view")
+      }
+    }
+  }
+})
+
+function toggleCollapsible(this: HTMLElement) {
+  this.classList.toggle("collapsed")
+  const content = this.nextElementSibling as HTMLElement
+  content.classList.toggle("collapsed")
+  content.style.maxHeight = content.style.maxHeight === "0px" ? content.scrollHeight + "px" : "0px"
+}
+
+document.addEventListener("nav", () => {
+  const toc = document.getElementById("toc")!
+  const content = toc.nextElementSibling as HTMLElement
+  content.style.maxHeight = content.scrollHeight + "px"
+  toc.removeEventListener("click", toggleCollapsible)
+  toc.addEventListener("click", toggleCollapsible)
+
+  // update toc entry highlighting
+  observer.disconnect()
+  const headers = document.querySelectorAll("h1[id], h2[id], h3[id], h4[id], h5[id], h6[id]")
+  headers.forEach(header => observer.observe(header))
+})

quartz/components/styles/legacyToc.scss

@@ -1,4 +1,4 @@
-details.toc {
+details#toc {
   & summary {
     cursor: pointer;
 

quartz/components/styles/toc.scss

@@ -1,22 +1,36 @@
-details.toc {
-  & summary {
-    cursor: pointer;
+button#toc {
+  background-color: transparent;
+  border: none;
+  text-align: left;
+  cursor: pointer;
+  padding: 0;
+  color: var(--dark);
+  display: flex;
+  align-items: center;
 
-    list-style: none;
-    &::marker, &::-webkit-details-marker {
-      display: none;
-    }
-
-    & > * {
-      display: inline-block;
-      margin: 0;
-    }
-
-    & > h3 {
-      font-size: 1rem;
-    }
+  & h3 {
+    font-size: 1rem;
+    display: inline-block;
+    margin: 0;
   }
-    
+
+  & .fold {
+    margin-left: 0.5rem; 
+    transition: transform 0.3s ease;
+    opacity: 0.8;
+  }
+
+  &.collapsed .fold {
+    transform: rotateZ(-90deg)
+  }
+}
+  
+#toc-content {
+  list-style: none;
+  overflow: hidden;
+  max-height: none;
+  transition: max-height 0.3s ease;
+
   & ul {
     list-style: none;
     margin: 0.5rem 0;
@@ -37,3 +51,4 @@ details.toc {
     }
   }
 }
+