From e6c7a4e1e2e3b0437b5dbbbeb7abc4e05622db16 Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Mon, 12 Sep 2022 01:03:55 +0000
Subject: [PATCH] fix: latex rendering bugs + patch for #195

---
 assets/js/popover.js |   90 ++++++++++++++++++++++++++++++++------------
 1 files changed, 65 insertions(+), 25 deletions(-)

diff --git a/assets/js/popover.js b/assets/js/popover.js
index 6dfd2d2..3d7a30c 100644
--- a/assets/js/popover.js
+++ b/assets/js/popover.js
@@ -1,34 +1,74 @@
 function htmlToElement(html) {
-    const template = document.createElement('template')
-    html = html.trim()
-    template.innerHTML = html
-    return template.content.firstChild
+  const template = document.createElement("template")
+  html = html.trim()
+  template.innerHTML = html
+  return template.content.firstChild
 }
 
-function initPopover(base) {
-    const baseUrl = base.replace(window.location.origin, "") // is this useless?
-    document.addEventListener("DOMContentLoaded", () => {
-        fetchData.then(({content}) => {
-        const links = [...document.getElementsByClassName("internal-link")]
-        links.forEach(li => {
-            const linkDest = content[li.dataset.src.replace(baseUrl, "")]
-            // const linkDest = content[li.dataset.src]
-            if (linkDest) {
-                const popoverElement = `<div class="popover">
+function initPopover(baseURL, useContextualBacklinks, renderLatex) {
+  const basePath = baseURL.replace(window.location.origin, "")
+  fetchData.then(({ content }) => {
+    const links = [...document.getElementsByClassName("internal-link")]
+    links
+      .filter(li => li.dataset.src || (li.dataset.idx && useContextualBacklinks))
+      .forEach(li => {
+        var el
+        if (li.dataset.ctx) {
+          const linkDest = content[li.dataset.src]
+          const popoverElement = `<div class="popover">
     <h3>${linkDest.title}</h3>
-    <p>${removeMarkdown(linkDest.content).split(" ", 20).join(" ")}...</p>
+    <p>${highlight(removeMarkdown(linkDest.content), li.dataset.ctx)}...</p>
     <p class="meta">${new Date(linkDest.lastmodified).toLocaleDateString()}</p>
 </div>`
-                const el = htmlToElement(popoverElement)
-                li.appendChild(el)
-                li.addEventListener("mouseover", () => {
-                el.classList.add("visible")
-                })
-                li.addEventListener("mouseout", () => {
-                el.classList.remove("visible")
-                })
+          el = htmlToElement(popoverElement)
+        } else {
+          const linkDest = content[li.dataset.src.replace(/\/$/g, "").replace(basePath, "")]
+          if (linkDest) {
+            let splitLink = li.href.split("#")
+            let cleanedContent = removeMarkdown(linkDest.content)
+            if (splitLink.length > 1) {
+              let headingName = splitLink[1].replace(/\-/g, " ")
+              let headingIndex = cleanedContent.toLowerCase().indexOf("<b>" + headingName + "</b>")
+              cleanedContent = cleanedContent.substring(headingIndex, cleanedContent.length)
             }
+            const popoverElement = `<div class="popover">
+    <h3>${linkDest.title}</h3>
+    <p>${cleanedContent.split(" ", 20).join(" ")}...</p>
+    <p class="meta">${new Date(linkDest.lastmodified).toLocaleDateString()}</p>
+</div>`
+            el = htmlToElement(popoverElement)
+          }
+        }
+
+        if (el) {
+          li.appendChild(el)
+          if (renderLatex) {
+            renderMathInElement(el, {
+              delimiters: [
+                { left: '$$', right: '$$', display: false },
+                { left: '$', right: '$', display: false },
+              ],
+              throwOnError: false
             })
-        })
-    })
+          }
+
+          li.addEventListener("mouseover", () => {
+            // fix tooltip positioning
+            window.FloatingUIDOM.computePosition(li, el, {
+              middleware: [window.FloatingUIDOM.offset(10), window.FloatingUIDOM.inline(), window.FloatingUIDOM.shift()],
+            }).then(({ x, y }) => {
+              Object.assign(el.style, {
+                left: `${x}px`,
+                top: `${y}px`,
+              })
+            })
+
+            el.classList.add("visible")
+          })
+          li.addEventListener("mouseout", () => {
+            el.classList.remove("visible")
+          })
+        }
+      })
+  })
 }

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