228 lines
7.4 KiB
JavaScript
Executable File
228 lines
7.4 KiB
JavaScript
Executable File
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/* Event listener function for the COPY BUTTON */
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document.addEventListener("DOMContentLoaded", function () {
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document.querySelectorAll("pre.src").forEach(function (codeBlock) {
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const button = document.createElement("button");
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button.innerText = "Copy";
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button.className = "copy-btn";
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// Append button inside <pre>
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codeBlock.appendChild(button);
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button.addEventListener("click", function () {
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const text = codeBlock.innerText.replace(button.innerText, ""); // exclude button text
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navigator.clipboard.writeText(text.trim()).then(() => {
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button.innerText = "Copied!";
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setTimeout(() => (button.innerText = "Copy"), 1500);
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});
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});
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});
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});
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/* Event listener for footnotes and sidenotes*/
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document.addEventListener("DOMContentLoaded", () => {
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document.querySelectorAll('a.footref[href^="#fn"]').forEach(ref => {
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const sup = ref.closest("sup") || ref;
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// idempotent: don't insert twice
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if (sup.nextElementSibling && sup.nextElementSibling.classList?.contains("footnote-sidenote")) return;
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const targetId = ref.getAttribute("href").replace(/^#/, ""); // works for fn.2 or fn2
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const anchor = document.getElementById(targetId);
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if (!anchor) return;
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const footdef = anchor.closest(".footdef") || anchor.parentElement;
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if (!footdef) return;
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// 1) Prefer leaf paragraphs to avoid div+p duplication
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let paras = footdef.querySelectorAll("p.footpara");
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if (!paras.length) {
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// fallback: any .footpara elements that don't contain another .footpara
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paras = footdef.querySelectorAll(".footpara:not(:has(.footpara))");
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}
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// 2) Build HTML, de-duplicating by text content
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let parts = [];
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if (paras.length) {
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const seen = new Set();
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parts = Array.from(paras).map(p => {
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const txt = p.textContent.trim().replace(/\s+/g, " ");
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if (seen.has(txt)) return "";
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seen.add(txt);
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return p.innerHTML.trim();
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}).filter(Boolean);
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}
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// 3) Fallback: clean full block if no paras found
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if (!parts.length) {
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const clone = footdef.cloneNode(true);
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clone.querySelectorAll("sup.footnum, a[role='doc-backlink']").forEach(n => n.remove());
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parts = [clone.innerHTML.trim()];
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}
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// 4) Insert the sidenote
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const sn = document.createElement("span");
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sn.className = "sidenote footnote-sidenote";
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sn.setAttribute("data-fn", (ref.textContent || "").trim());
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sn.innerHTML = parts.join(" ");
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sup.insertAdjacentElement("afterend", sn);
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});
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});
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/* Function for setting the theme */
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(function(){
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const root = document.documentElement;
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const storageKey = "theme";
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const saved = localStorage.getItem(storageKey);
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if (saved === "dark" || saved === "light") {
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root.setAttribute("data-theme", saved);
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}
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const btn = document.getElementById("theme-toggle");
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if (!btn) return;
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btn.addEventListener("click", () => {
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const current = root.getAttribute("data-theme");
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const next = current === "dark" ? "light" : "dark";
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// If no current (auto), assume we’re toggling to dark first
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const target = current ? next : "dark";
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root.setAttribute("data-theme", target);
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localStorage.setItem(storageKey, target);
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});
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})();
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// Simple, timezone-safe if you pass UTC (…Z) in the datetime
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document.addEventListener('DOMContentLoaded', () => {
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const els = document.querySelectorAll('time.countdown');
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if (!els.length) return;
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const plural = (n, w) => `${n} ${w}${n === 1 ? '' : 's'}`;
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const render = (el) => {
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const raw = el.getAttribute('datetime');
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const label = el.dataset.label || '';
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const target = new Date(raw); // Prefer ISO like 2025-12-31T00:00:00Z
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if (isNaN(target)) { el.textContent = '—'; return; }
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const now = new Date();
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let diff = target - now;
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if (diff <= 0) {
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el.textContent = `${label ? label + ' ' : ''}today`;
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el.classList.add('expired');
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return;
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}
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const d = Math.floor(diff / 86400000); diff -= d * 86400000;
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const h = Math.floor(diff / 3600000); diff -= h * 3600000;
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const m = Math.floor(diff / 60000); diff -= m * 60000;
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const s = Math.floor(diff / 1000);
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const pieces = [];
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if (d) pieces.push(plural(d, 'day'));
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pieces.push(`${h}h ${m}m ${s}s`);
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el.textContent = `${label ? label + ' in : ' : ''}${pieces.join(' ')}`;
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};
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const tick = () => els.forEach(render);
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tick();
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setInterval(tick, 1000); // update every second
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});
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/* Event listener for scrolling and changing the active label on the TOC */
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document.addEventListener("DOMContentLoaded", () => {
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const toc = document.querySelector("#text-table-of-contents");
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if (!toc) { console.warn("No #text-table-of-contents found"); return; }
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const links = toc.querySelectorAll('a[href^="#"]'); // '^=' is a starts with operator.
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// <a href="#introduction">Intro</a> matches
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if (!links.length) { console.warn("No ToC links found"); return; }
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// Map: id -> link
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const linkById = new Map();
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links.forEach(a => {
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const id = decodeURIComponent(a.getAttribute("href").slice(1));
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const el = document.getElementById(id);
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if (el) linkById.set(id, a);
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});
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if (!linkById.size) { console.warn("No matching headings with IDs"); return; }
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// Headings to observe (h2–h4 usually)
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const headings = [...document.querySelectorAll("h2[id], h3[id], h4[id]")]
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.filter(h => linkById.has(h.id));
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// Helper to mark active
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const setActive = (id) => {
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links.forEach(a => {
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const active = a.getAttribute("href") === `#${id}`;
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a.classList.toggle("is-active", active);
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if (active) a.setAttribute("aria-current", "true");
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else a.removeAttribute("aria-current");
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});
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};
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// Calculate sticky header offset in px
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const headerOffsetPx = 6.5 * parseFloat(getComputedStyle(document.documentElement).fontSize);
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// Track visible headings (id -> distance from top)
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const visible = new Map();
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const observer = new IntersectionObserver((entries) => {
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entries.forEach(entry => {
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const id = entry.target.id;
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if (entry.isIntersecting) {
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// How far from the top (after header offset)
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const dist = entry.target.getBoundingClientRect().top - headerOffsetPx;
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visible.set(id, dist);
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} else {
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visible.delete(id);
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}
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});
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if (visible.size) {
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// Choose the heading closest to the top (>= -headerOffset)
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const topMost = [...visible.entries()]
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.sort((a,b) => Math.abs(a[1]) - Math.abs(b[1]))[0][0];
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setActive(topMost);
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// console.log("Active:", topMost, visible);
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}
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}, {
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root: null, // track relative to viewport
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rootMargin: `-${headerOffsetPx}px 0px -70% 0px`,
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threshold: [0, 0.01, 0.1] // fire as soon as it enters
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});
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headings.forEach(h => observer.observe(h));
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// Initial highlight (in case load mid‑page)
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let bestId = null, bestDist = Infinity;
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headings.forEach(h => {
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const top = h.getBoundingClientRect().top - headerOffsetPx;
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const dist = top < 0 ? Math.abs(top) : top + 1e6;
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if (dist < bestDist) { bestDist = dist; bestId = h.id; }
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});
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if (bestId) setActive(bestId);
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// smooth-scroll ToC clicks
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toc.addEventListener("click", (e) => {
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const a = e.target.closest('a[href^="#"]');
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if (!a) return;
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const id = decodeURIComponent(a.hash.slice(1));
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const el = document.getElementById(id);
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if (!el) return;
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e.preventDefault();
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el.scrollIntoView({ behavior: "smooth", block: "start" });
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el.setAttribute("tabindex", "-1");
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el.focus({ preventScroll: true });
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history.pushState(null, "", `#${id}`);
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});
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});
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