`;
document.body.appendChild(el);
return el;
}
const bubble = ensureBubble();
const elH = bubble.querySelector("#tt-title");
const elB = bubble.querySelector("#tt-body");
const elClose = bubble.querySelector(".tt-close");
// ---------------- Parse [[term|heading|body]] anywhere ----------------
const TOKEN_RE = /\[\[([^|\]]+)\|([^|\]]+)\|([^\]]+)\]\]/g;
const BLOCK_SKIP = new Set(["SCRIPT","STYLE","NOSCRIPT","TEXTAREA","INPUT","SELECT","CODE","PRE","TEMPLATE","IFRAME"]);
function shouldSkipTextNode(n){
let el = n.parentElement;
while (el){
if (BLOCK_SKIP.has(el.tagName) || el.isContentEditable) return true;
el = el.parentElement;
}
return false;
}
const walker = document.createTreeWalker(document.body, NodeFilter.SHOW_TEXT);
const textNodes = [];
while (walker.nextNode()){
const n = walker.currentNode;
if (!n.nodeValue || shouldSkipTextNode(n)) continue;
if (TOKEN_RE.test(n.nodeValue)) textNodes.push(n);
TOKEN_RE.lastIndex = 0;
}
textNodes.forEach(node => {
const frag = document.createDocumentFragment();
const insideLink = !!node.parentElement.closest("a");
let text = node.nodeValue, last = 0; TOKEN_RE.lastIndex = 0; let m;
while ((m = TOKEN_RE.exec(text))){
if (m.index > last) frag.appendChild(document.createTextNode(text.slice(last, m.index)));
const term=m[1].trim(), heading=m[2].trim(), body=m[3].trim();
const t = insideLink ? document.createElement("span") : document.createElement("button");
if (insideLink){ t.setAttribute("role","button"); t.setAttribute("tabindex","0"); } else { t.type="button"; }
t.className="tt-trigger";
t.textContent=term;
t.setAttribute("data-tt-h", heading);
t.setAttribute("data-tt-b", body);
t.setAttribute("aria-haspopup","dialog");
t.setAttribute("aria-expanded","false");
frag.appendChild(t);
last = TOKEN_RE.lastIndex;
}
if (last = 2) return el;
el = el.parentElement;
}
// Fallback: nearest non-inline container
el = trigger.parentElement || document.body;
while (el && el !== document.body){
const d = getComputedStyle(el).display;
if (d !== "inline" && d !== "contents") return el;
el = el.parentElement;
}
return document.body;
}
// Utility: child of `ancestor` that contains `target` (direct child)
function directChildContaining(ancestor, target){
for (const ch of ancestor.children){
if (ch === target || ch.contains(target)) return ch;
}
return null;
}
function getElementTarget(e) {
// If target is already an Element, use it
if (e.target instanceof Element) return e.target;
// Otherwise, walk the composed/path for the first Element
const path = (typeof e.composedPath === 'function') ? e.composedPath() : [];
for (const n of path) if (n instanceof Element) return n;
return null;
}
// ---------------- Dim everything except the trigger branch (sibling branches only) ----------------
function dimAllOtherBranches(container, trigger){
undim(); // clear previous
const dimEls = [];
const wrappedTexts = [];
const pathEls = [];
// Build ELEMENT-only path [container -> ... -> trigger]
const path = [];
for (let el = trigger; el && el !== container; el = el.parentElement) path.push(el);
path.push(container);
path.reverse();
// At each ancestor level, find the *direct* child that leads to the trigger
for (let i = 0; i {
if (node.nodeType !== 3) return; // text only
if (!node.nodeValue || !node.nodeValue.trim()) return;
// If this text node sits inside branchChild, skip
if (branchChild && branchChild.contains && branchChild.contains(node)) return;
const span = document.createElement("span");
span.style.transition = `opacity ${DIM_EASE_MS}ms ease`;
span.style.opacity = String(DIM_OPACITY);
span.textContent = node.nodeValue;
node.parentNode.replaceChild(span, node);
wrappedTexts.push(span);
});
// Keep a reference to the path elements (so we can explicitly restore opacity if needed)
if (anc && anc.nodeType === 1) pathEls.push(anc);
}
// Hard-guard: explicitly set opacity:1 on the entire path to neutralize any inherited fade
pathEls.forEach(el => {
el.style.opacity = "1";
});
dimCtx = { container, dimEls, wrappedTexts, pathEls };
}
function undim(){
if (!dimCtx) return;
const { dimEls, wrappedTexts, pathEls } = dimCtx;
// Animate back
dimEls.forEach(el => {
el.style.transition = `opacity ${DIM_EASE_MS}ms ease`;
el.style.opacity = "1";
// remove inline style after the animation so we don't override site CSS
setTimeout(() => { if (el) el.style.opacity = ""; }, DIM_EASE_MS + 50);
});
wrappedTexts.forEach(span => {
span.style.transition = `opacity ${DIM_EASE_MS}ms ease`;
span.style.opacity = "1";
span.addEventListener("transitionend", () => {
if (!span.parentNode) return;
span.parentNode.replaceChild(document.createTextNode(span.textContent || ""), span);
}, { once:true });
});
// Clear hard-guard on path
pathEls.forEach(el => { if (el) el.style.opacity = ""; });
dimCtx = null;
}
// ---------------- Positioning (centered, edge-aware, flip) ----------------
function clamp(v,min,max){ return Math.max(min,Math.min(max,v)); }
function measureBubbleForPlacement(){
const wasOpen = bubble.classList.contains("is-open");
if (!wasOpen){ bubble.style.visibility="hidden"; bubble.classList.add("is-open"); }
const rect = bubble.getBoundingClientRect();
if (!wasOpen){ bubble.classList.remove("is-open"); bubble.style.visibility=""; }
return { w: rect.width, h: rect.height };
}
function placeAnchored(trigger){
const vw=innerWidth, vh=innerHeight;
const r = trigger.getBoundingClientRect();
const { w, h } = measureBubbleForPlacement();
let left = r.left + (r.width/2) - (w/2);
left = clamp(left, EDGE_PADDING, Math.max(EDGE_PADDING, vw - EDGE_PADDING - w));
const topBelow = r.bottom + OFFSET_Y;
const spaceBelow = vh - topBelow - EDGE_PADDING;
const placeBelow = spaceBelow >= h;
let top = placeBelow ? topBelow : (r.top - h - OFFSET_Y);
top = clamp(top, EDGE_PADDING, Math.max(EDGE_PADDING, vh - EDGE_PADDING - h));
bubble.style.left = left + "px";
bubble.style.top = top + "px";
const br = bubble.getBoundingClientRect();
if (br.bottom > vh - EDGE_PADDING){
bubble.style.maxHeight = (vh - 2*EDGE_PADDING) + "px";
bubble.style.overflowY = "auto";
} else {
bubble.style.maxHeight = "none";
bubble.style.overflowY = "visible";
}
}
// ---------------- Open / Close (place → fade/scale) ----------------
function animateIn(){
bubble.style.transition = "none";
bubble.style.opacity = "0";
bubble.style.transform = "scale(0.95)";
void bubble.offsetWidth;
bubble.style.transition = "opacity .18s ease, transform .18s ease";
bubble.style.opacity = "1";
bubble.style.transform = "scale(1)";
}
function animateOut(done){
bubble.style.transition = "opacity .16s ease, transform .16s ease";
bubble.style.opacity = "0";
bubble.style.transform = "scale(0.95)";
const end = () => { bubble.removeEventListener("transitionend", end); done && done(); };
bubble.addEventListener("transitionend", end);
setTimeout(end, 260);
}
function openFromTrigger(trigger){
if (current && current !== trigger) forceClose();
current = trigger;
trigger.setAttribute("aria-expanded","true");
elH.textContent = trigger.getAttribute("data-tt-h") || "";
elB.textContent = trigger.getAttribute("data-tt-b") || "";
bubble.classList.add("is-open");
bubble.setAttribute("aria-hidden","false");
placeAnchored(trigger);
animateIn();
const container = findTextContainer(trigger);
dimAllOtherBranches(container, trigger);
hoverCount = 0;
cancelCloseTimer();
}
function forceClose(){
if (!current) return;
bubble.classList.remove("is-open");
bubble.setAttribute("aria-hidden","true");
current.setAttribute("aria-expanded","false");
current = null;
undim();
hoverCount = 0;
cancelCloseTimer();
}
function closeWithAnim(){
if (!current) return;
const t = current;
animateOut(() => {
bubble.classList.remove("is-open");
bubble.setAttribute("aria-hidden","true");
t.setAttribute("aria-expanded","false");
current = null;
undim();
});
}
function scheduleClose(){
cancelCloseTimer();
closeTimer = setTimeout(() => {
if (hoverCount {
if (isCoarse()) return;
const target = getElementTarget(e);
if (!target) return;
const t = target.closest(".tt-trigger");
if (!t) return;
onZoneEnter();
if (!current || current !== t) openFromTrigger(t);
};
const handleLeave = (e) => {
if (isCoarse()) return;
const target = getElementTarget(e);
if (!target) return;
const t = target.closest(".tt-trigger");
if (!t) return;
onZoneLeave();
};
document.addEventListener("pointerenter", handleEnter, true);
document.addEventListener("mouseenter", handleEnter, true);
document.addEventListener("pointerleave", handleLeave, true);
document.addEventListener("mouseleave", handleLeave, true);
// ---------------- Keyboard ----------------
document.addEventListener("focusin", (e) => {
if (!e.target) return;
const t = e.target.closest(".tt-trigger");
if (t) openFromTrigger(t);
});
document.addEventListener("focusout", (e) => {
if (!e.target) return;
const t = e.target.closest(".tt-trigger");
if (t && current === t) closeWithAnim();
});
// ---------------- Mobile / coarse ----------------
document.addEventListener("pointerdown", (e) => {
if (!isCoarse()) return;
const t = e.target.closest(".tt-trigger");
if (!t) return;
e.preventDefault();
e.stopPropagation();
if (current === t && bubble.classList.contains("is-open")) { closeWithAnim(); return; }
openFromTrigger(t);
}, true);
document.addEventListener("click", (e) => {
if (!isCoarse()) return;
if (!bubble.classList.contains("is-open")) return;
const inBubble = !!e.target.closest(".tt-bubble");
const onTrigger = !!e.target.closest(".tt-trigger");
if (!inBubble && !onTrigger) closeWithAnim();
}, true);
// Close button + ESC
elClose.addEventListener("click", closeWithAnim);
document.addEventListener("keydown", (e) => { if (e.key === "Escape") closeWithAnim(); });
// Reposition on resize/scroll while open
const reposition = () => { if (!current) return; placeAnchored(current); };
addEventListener("resize", reposition, { passive: true });
addEventListener("scroll", reposition, { passive: true });
});