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document.body; }; var pruneOffscreen = function(root, vw, vh) { var swaps = []; var pruneChildren = function(parent) { if (!parent || !parent.children || parent.children.length === 0) return; var children = Array.prototype.slice.call(parent.children); for (var i = 0; i < children.length; i++) { var child = children[i]; if (!child || child.nodeType !== 1) continue; var tag = child.tagName; if (tag === 'SCRIPT' || tag === 'STYLE' || tag === 'LINK' || tag === 'META' || tag === 'NOSCRIPT' || tag === 'HEAD' || tag === 'BODY' || tag === 'HTML') continue; var r; try { r = child.getBoundingClientRect(); } catch (_) { continue; } if (!r || r.width === 0 || r.height === 0) continue; var intersects = r.right > 0 && r.bottom > 0 && r.left < vw && r.top < vh; if (intersects) { pruneChildren(child); continue; } var pos = 'static'; try { pos = window.getComputedStyle(child).position; } catch (_) {} if (pos === 'fixed' || pos === 'sticky') continue; var ph; try { ph = document.createElement(tag); } catch (_) { continue; } ph.setAttribute('data-orbiton-placeholder', '1'); ph.style.cssText = 'visibility:hidden;width:' + r.width + 'px;height:' + r.height + 'px;margin:0;padding:0;border:0;flex:0 0 auto;contain:strict;'; try { parent.replaceChild(ph, child); swaps.push({ parent: parent, original: child, placeholder: ph }); } catch (_) {} } }; pruneChildren(root); return { count: swaps.length, restore: function() { for (var i = swaps.length - 1; i >= 0; i--) { try { swaps[i].parent.replaceChild(swaps[i].original, swaps[i].placeholder); } catch (_) {} } }, }; }; var orbMakeImageFetchFn = function(proxyBase, stats) { var toDataUrl = function(blob) { return new Promise(function(resolve, reject) { var reader = new FileReader(); reader.onload = function() { resolve(reader.result); }; reader.onerror = function() { reject(new Error('FileReader failed')); }; reader.readAsDataURL(blob); }); }; var fetchAsDataUrl = function(input, init) { return fetch(input, init).then(function(res) { if (!res.ok) throw new Error('HTTP ' + res.status); return res.blob(); }).then(toDataUrl); }; return function(url) { if (typeof url !== 'string' || !/^https?:/i.test(url)) return Promise.resolve(false); return fetchAsDataUrl(url, { cache: 'no-cache' }).catch(function() { stats.directFailed++; if (!proxyBase) { stats.gaveUp++; return false; } var proxied = proxyBase.replace(/\/+$/, '') + '/api/website-screenshot/image-proxy?url=' + encodeURIComponent(url); return fetchAsDataUrl(proxied, { mode: 'cors' }).then(function(dataUrl) { stats.proxied++; return dataUrl; }).catch(function() { stats.gaveUp++; return false; }); }); }; }; var capture = function(requestId, proxyBase) { var t0 = (typeof performance !== 'undefined' && performance.now) ? performance.now() : Date.now(); var log = function(stage, data) { try { var ts = ((typeof performance !== 'undefined' && performance.now) ? performance.now() : Date.now()) - t0; window.parent.postMessage({ type: 'orbiton:capture-log', requestId: requestId, stage: stage, data: data || null, msSinceStart: Math.round(ts), bridgeVersion: 'orbiton:annotation-v15' }, '*'); } catch (_) {} }; var reply = function(payload) { try { var msg = { type: 'orbiton:capture-result', requestId: requestId }; for (var k in payload) { if (Object.prototype.hasOwnProperty.call(payload, k)) msg[k] = payload[k]; } window.parent.postMessage(msg, '*'); } catch (_) {} }; log('start', { vw: window.innerWidth, vh: window.innerHeight, scrollY: window.scrollY, docHeight: document.documentElement && document.documentElement.scrollHeight, msAvailable: !!window.modernScreenshot, hasProxyBase: !!proxyBase }); var fetchStats = { directFailed: 0, proxied: 0, gaveUp: 0 }; var imageFetchFn = orbMakeImageFetchFn(typeof proxyBase === 'string' && /^https?:/i.test(proxyBase) ? proxyBase : null, fetchStats); var fontsReady; try { fontsReady = (document.fonts && document.fonts.ready) ? document.fonts.ready : Promise.resolve(); log('fonts-waiting', { hasDocumentFonts: !!document.fonts }); } catch (e) { fontsReady = Promise.resolve(); log('fonts-skip', { error: (e && e.message) || String(e) }); } Promise.all([loadModernScreenshot(), fontsReady]).then(function(arr) { log('fonts-ready'); log('modern-screenshot-ready', { hasGlobal: !!window.modernScreenshot }); var ms = arr[0]; var vw = window.innerWidth; var vh = window.innerHeight; var node = findCaptureNode(vw, vh); var nodeRect = node.getBoundingClientRect(); log('capture-node-picked', { tag: node.tagName, id: node.id || null, cls: (node.className && typeof node.className === 'string') ? node.className.slice(0, 80) : null, nodeWidth: Math.round(nodeRect.width), nodeHeight: Math.round(nodeRect.height), nodeTop: Math.round(nodeRect.top), nodeLeft: Math.round(nodeRect.left), isBody: node === document.body, }); var pruned = { count: 0, restore: function() {} }; try { pruned = pruneOffscreen(node, vw, vh); log('prune-applied', { swapCount: pruned.count }); } catch (e) { log('prune-skipped', { error: (e && e.message) || String(e) }); } var restored = false; var restoreOnce = function() { if (restored) return; restored = true; try { pruned.restore(); } catch (_) {} }; log('domToCanvas-start'); return ms.domToCanvas(node, { backgroundColor: '#ffffff', scale: 1, fetch: { requestInit: { cache: 'no-cache' } }, fetchFn: imageFetchFn }).then(function(nodeCanvas) { restoreOnce(); log('domToCanvas-done', { canvasWidth: nodeCanvas.width, canvasHeight: nodeCanvas.height, imgDirectFailed: fetchStats.directFailed, imgProxied: fetchStats.proxied, imgGaveUp: fetchStats.gaveUp }); var crop = document.createElement('canvas'); crop.width = vw; crop.height = vh; var ctx = crop.getContext('2d'); if (!ctx) throw new Error('canvas 2d context unavailable'); ctx.fillStyle = '#ffffff'; ctx.fillRect(0, 0, vw, vh); var sx = Math.max(0, -nodeRect.left); var sy = Math.max(0, -nodeRect.top); var dx = Math.max(0, nodeRect.left); var dy = Math.max(0, nodeRect.top); var sw = Math.max(0, Math.min(nodeCanvas.width - sx, vw - dx)); var sh = Math.max(0, Math.min(nodeCanvas.height - sy, vh - dy)); log('crop-applied', { sx: Math.round(sx), sy: Math.round(sy), dx: Math.round(dx), dy: Math.round(dy), sw: Math.round(sw), sh: Math.round(sh) }); if (sw > 0 && sh > 0) ctx.drawImage(nodeCanvas, sx, sy, sw, sh, dx, dy, sw, sh); var dataUrl = crop.toDataURL('image/png'); log('dataUrl-ready', { sizeKB: Math.round(dataUrl.length / 1024), prefix: dataUrl.substring(0, 32) }); return { dataUrl: dataUrl, viewportWidth: vw, viewportHeight: vh }; }, function(err) { restoreOnce(); throw err; }); }).then(function(result) { log('reply', { ok: true }); reply(result); }).catch(function(err) { var message = (err && err.message) || String(err) || 'capture failed'; log('error', { message: message, stack: err && err.stack ? String(err.stack).split('\n').slice(0, 3).join(' | ') : null }); reply({ error: message }); }); }; var __orbHi = { els: [], boxes: [], active: 0, layer: null }; var orbEnsureLayer = function() { if (__orbHi.layer && document.body && document.body.contains(__orbHi.layer)) return __orbHi.layer; var layer = document.createElement('div'); layer.setAttribute('data-orbiton-highlight-layer', '1'); layer.style.cssText = 'position:absolute;top:0;left:0;width:0;height:0;margin:0;padding:0;border:0;z-index:2147483646;pointer-events:none;'; (document.body || document.documentElement).appendChild(layer); __orbHi.layer = layer; return layer; }; var orbClearHi = function() { if (__orbHi.layer) { try { __orbHi.layer.innerHTML = ''; } catch (e) {} } __orbHi.els = []; __orbHi.boxes = []; __orbHi.active = 0; }; var orbVisible = function(el) { if (!el || el.nodeType !== 1) return false; var r; try { r = el.getBoundingClientRect(); } catch (e) { return false; } if (r.width < 4 || r.height < 4) return false; var st; try { st = window.getComputedStyle(el); } catch (e) { return true; } if (st.display === 'none' || st.visibility === 'hidden' || parseFloat(st.opacity) === 0) return false; return true; }; var orbNorm = function(s) { return (s || '').replace(/\s+/g, ' ').trim().toLowerCase(); }; var orbFind = function(anchor) { var needle = orbNorm(anchor); if (needle.length < 3) return null; var probe = needle.length > 60 ? needle.slice(0, 60) : needle; var walker; try { walker = document.createTreeWalker(document.body, NodeFilter.SHOW_TEXT, null); } catch (e) { return null; } var node; while ((node = walker.nextNode())) { var text = orbNorm(node.nodeValue); if (!text || text.indexOf(probe) === -1) continue; var el = node.parentElement; while (el && el !== document.body && !orbVisible(el)) el = el.parentElement; return el || node.parentElement; } return null; }; var orbRender = function() { var layer = orbEnsureLayer(); layer.innerHTML = ''; __orbHi.boxes = []; var sx = window.scrollX || (document.documentElement && document.documentElement.scrollLeft) || 0; var sy = window.scrollY || (document.documentElement && document.documentElement.scrollTop) || 0; for (var i = 0; i < __orbHi.els.length; i++) { var el = __orbHi.els[i]; if (!el || !document.body.contains(el)) continue; var r = el.getBoundingClientRect(); var box = document.createElement('div'); box.setAttribute('data-orbiton-highlight', '1'); box.style.cssText = 'position:absolute;top:' + (r.top + sy - 4) + 'px;left:' + (r.left + sx - 4) + 'px;width:' + (r.width + 8) + 'px;height:' + (r.height + 8) + 'px;border:2px solid #2563eb;border-radius:6px;background:rgba(37,99,235,0.08);box-sizing:border-box;pointer-events:none;'; var badge = document.createElement('div'); badge.textContent = 'Updated'; badge.style.cssText = 'position:absolute;top:-11px;left:-2px;background:#2563eb;color:#fff;font:600 11px/1.5 system-ui,-apple-system,sans-serif;padding:0 6px;border-radius:9999px;white-space:nowrap;'; box.appendChild(badge); layer.appendChild(box); __orbHi.boxes.push(box); } }; var orbScrollTo = function(i) { var el = __orbHi.els[i]; if (el) { try { el.scrollIntoView({ behavior: 'smooth', block: 'center' }); } catch (e) {} } }; var orbHighlight = function(anchors) { orbClearHi(); if (!anchors || !anchors.length) return 0; var els = []; for (var i = 0; i < anchors.length; i++) { var el = orbFind(anchors[i]); if (el) { var dup = false; for (var j = 0; j < els.length; j++) { if (els[j] === el) { dup = true; break; } } if (!dup) els.push(el); } } __orbHi.els = els; __orbHi.active = 0; orbRender(); if (els.length) orbScrollTo(0); setTimeout(function() { if (__orbHi.els.length) orbRender(); }, 500); setTimeout(function() { if (__orbHi.els.length) orbRender(); }, 1500); return els.length; }; var orbStep = function(dir) { if (!__orbHi.els.length) return; __orbHi.active = (__orbHi.active + dir + __orbHi.els.length) % __orbHi.els.length; orbScrollTo(__orbHi.active); }; window.addEventListener('resize', function() { if (__orbHi.els.length) orbRender(); }, { passive: true }); var orbText = function(el) { if (!el) return ''; var t = ''; try { t = el.innerText || el.textContent || ''; } catch (_) { t = ''; } return (t || '').replace(/\s+/g, ' ').trim(); }; var orbDomPath = function(el) { var parts = []; var node = el; var depth = 0; while (node && node.nodeType === 1 && node !== document.body && node !== document.documentElement && depth < 6) { var tag = (node.tagName || 'node').toLowerCase(); if (node.id) { parts.unshift(tag + '#' + node.id); break; } var seg = tag; var parent = node.parentElement; if (parent) { var same = 0, idx = 0, found = false; for (var i = 0; i < parent.children.length; i++) { var c = parent.children[i]; if (c.tagName === node.tagName) { same++; if (!found) idx++; } if (c === node) found = true; } if (same > 1) seg = tag + ':nth-of-type(' + idx + ')'; } parts.unshift(seg); node = node.parentElement; depth++; } return parts.join(' > '); }; var orbNearestHeading = function(el) { var heads; try { heads = document.querySelectorAll('h1,h2,h3,h4,h5,h6'); } catch (_) { return ''; } var best = ''; for (var i = 0; i < heads.length; i++) { var rel = 0; try { rel = el.compareDocumentPosition(heads[i]); } catch (_) { continue; } if ((rel & 2) || (rel & 8)) { var t = orbText(heads[i]); if (t) best = t; } else if (rel & 4) break; } return best; }; var orbResolveElement = function(requestId, xPercent, yPercent) { var reply = function(payload) { try { var msg = { type: 'orbiton:resolve-result', requestId: requestId }; for (var k in payload) { if (Object.prototype.hasOwnProperty.call(payload, k)) msg[k] = payload[k]; } window.parent.postMessage(msg, '*'); } catch (_) {} }; try { var vw = window.innerWidth, vh = window.innerHeight; var x = Math.max(0, Math.min(vw - 1, (Number(xPercent) || 0) / 100 * vw)); var y = Math.max(0, Math.min(vh - 1, (Number(yPercent) || 0) / 100 * vh)); var els = []; try { els = document.elementsFromPoint(x, y) || []; } catch (_) {} var target = null; for (var i = 0; i < els.length; i++) { var el = els[i]; if (!el || el.nodeType !== 1) continue; if (el === document.documentElement || el === document.body) continue; if (el.hasAttribute && (el.hasAttribute('data-orbiton-placeholder') || el.hasAttribute('data-orbiton-highlight') || el.hasAttribute('data-orbiton-highlight-layer'))) continue; target = el; break; } if (!target) { reply({ error: 'no element at point' }); return; } var rect = target.getBoundingClientRect(); var attrs = {}; var grab = ['alt', 'aria-label', 'title', 'placeholder', 'name', 'role', 'type', 'href']; for (var a = 0; a < grab.length; a++) { try { var v = target.getAttribute(grab[a]); if (v) attrs[grab[a]] = String(v).slice(0, 120); } catch (_) {} } try { if (target.tagName === 'IMG' && target.getAttribute('src')) { attrs.src = String(target.getAttribute('src')).split('?')[0].split('/').pop().slice(0, 120); } } catch (_) {} var cls = ''; try { cls = (typeof target.className === 'string') ? target.className : (target.getAttribute('class') || ''); } catch (_) {} reply({ element: { pagePath: (window.location && window.location.pathname) || '', tagName: (target.tagName || '').toLowerCase(), id: target.id || '', className: cls.replace(/\s+/g, ' ').trim().slice(0, 200), text: orbText(target).slice(0, 400), heading: orbNearestHeading(target).slice(0, 160), domPath: orbDomPath(target), attributes: attrs, rect: { top: Math.round(rect.top), left: Math.round(rect.left), width: Math.round(rect.width), height: Math.round(rect.height) } } }); } catch (e) { reply({ error: (e && e.message) || String(e) }); } }; window.addEventListener('message', function(e) { if (!e || !e.data || typeof e.data !== 'object') return; if (e.data.type === 'orbiton:get-scroll') post(); else if (e.data.type === 'orbiton:capture-viewport') capture(e.data.requestId, e.data.proxyBase); else if (e.data.type === 'orbiton:resolve-element') orbResolveElement(e.data.requestId, e.data.xPercent, e.data.yPercent); else if (e.data.type === 'orbiton:highlight') { var count = 0; try { count = orbHighlight(e.data.anchors || []); } catch (err) {} try { window.parent.postMessage({ type: 'orbiton:highlight-result', count: count }, '*'); } catch (err) {} } else if (e.data.type === 'orbiton:highlight-step') { try { orbStep(e.data.dir === -1 ? -1 : 1); } catch (err) {} } else if (e.data.type === 'orbiton:highlight-clear') { try { orbClearHi(); } catch (err) {} } }); }

PDAC Toronto, 2-5 March, 2025