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(function () { |
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'use strict'; |
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|
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var _typoKeys = { |
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family:'font-family', weight:'font-weight', style:'font-style', |
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transform:'text-transform', decoration:'text-decoration', |
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sizeDesktop:'font-size-d', sizeTablet:'font-size-t', sizeMobile:'font-size-m', |
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lineHeightDesktop:'line-height-d', lineHeightTablet:'line-height-t', lineHeightMobile:'line-height-m', |
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letterSpacingDesktop:'letter-spacing-d', letterSpacingTablet:'letter-spacing-t', letterSpacingMobile:'letter-spacing-m', |
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wordSpacingDesktop:'word-spacing-d', wordSpacingTablet:'word-spacing-t', wordSpacingMobile:'word-spacing-m' |
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}; |
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var _typoUnits = { size:'sizeUnit', lineHeight:'lineHeightUnit', letterSpacing:'letterSpacingUnit', wordSpacing:'wordSpacingUnit' }; |
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var _typoUnitDefaults = { size:'px', lineHeight:'', letterSpacing:'px', wordSpacing:'px' }; |
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function typoCssVarsForEl(el, obj, prefix) { |
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if (!obj || typeof obj !== 'object') return; |
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Object.keys(_typoKeys).forEach(function (k) { |
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var v = obj[k]; if (v === undefined || v === '') return; |
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var prop = _typoKeys[k]; |
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var base = k.replace(/Desktop|Tablet|Mobile/, ''); |
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var uKey = _typoUnits[base]; |
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if (uKey && typeof v === 'number') v = v + (obj[uKey] || _typoUnitDefaults[base] || ''); |
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el.style.setProperty(prefix + prop, v); |
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}); |
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} |
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|
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function initBlock(root) { |
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var optsRaw = root.getAttribute('data-opts'); |
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var opts; |
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try { opts = JSON.parse(optsRaw); } catch (e) { opts = {}; } |
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|
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var items = opts.items || []; |
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var position = opts.position || 'right'; |
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var dotShape = opts.dotShape || 'circle'; |
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var dotSize = opts.dotSize || 12; |
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var dotGap = opts.dotGap || 14; |
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var edgeOffset = opts.edgeOffset || 24; |
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var scrollOff = opts.scrollOffset || 0; |
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var showTips = opts.showTooltips !== false; |
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var animDots = opts.animateDots !== false; |
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var progLine = opts.progressLine !== false; |
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var dotColor = opts.dotColor || '#d1d5db'; |
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var activeColor = opts.activeDotColor || '#6366f1'; |
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var hoverColor = opts.hoverDotColor || '#a5b4fc'; |
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var progColor = opts.progressLineColor || '#6366f1'; |
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var tipBg = opts.tooltipBg || '#1e1b4b'; |
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var tipColor = opts.tooltipColor || '#ffffff'; |
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|
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if (!items.length) return; |
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|
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// ---- Build nav ---- // |
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var nav = document.createElement('nav'); |
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nav.className = 'bkbg-opn-nav bkbg-opn-' + position; |
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if (dotShape === 'diamond') nav.classList.add('bkbg-opn-diamond'); |
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if (dotShape === 'square') nav.classList.add('bkbg-opn-square'); |
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nav.setAttribute('aria-label', 'Page navigation'); |
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nav.style.cssText = [ |
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(position === 'right' ? 'right' : 'left') + ':' + edgeOffset + 'px', |
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'--bkbg-opn-dot:' + dotColor, |
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'--bkbg-opn-active:' + activeColor, |
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'--bkbg-opn-hover:' + hoverColor |
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].join(';'); |
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|
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typoCssVarsForEl(nav, opts.tooltipTypo, '--bkbg-opn-tp-'); |
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|
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// Progress line track |
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var track, trackFill; |
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if (progLine) { |
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track = document.createElement('div'); |
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track.className = 'bkbg-opn-track'; |
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trackFill = document.createElement('div'); |
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trackFill.className = 'bkbg-opn-track-fill'; |
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trackFill.style.background = progColor; |
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track.appendChild(trackFill); |
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nav.appendChild(track); |
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} |
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|
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var dotEls = []; |
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|
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items.forEach(function (item, i) { |
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var wrapper = document.createElement('div'); |
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wrapper.className = 'bkbg-opn-item'; |
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if (animDots) wrapper.classList.add('bkbg-opn-animate'); |
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wrapper.style.padding = Math.round(dotGap / 2) + 'px 0'; |
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wrapper.setAttribute('aria-label', item.label); |
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wrapper.setAttribute('role', 'button'); |
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wrapper.setAttribute('tabindex', '0'); |
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|
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// Dot |
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var dot = document.createElement('div'); |
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dot.className = 'bkbg-opn-dot'; |
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dot.style.cssText = 'width:' + dotSize + 'px;height:' + dotSize + 'px;'; |
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wrapper.appendChild(dot); |
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|
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// Tooltip |
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if (showTips) { |
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var tip = document.createElement('div'); |
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tip.className = 'bkbg-opn-tooltip'; |
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tip.textContent = item.label; |
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tip.style.cssText = 'background:' + tipBg + ';color:' + tipColor + ';'; |
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wrapper.appendChild(tip); |
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} |
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|
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dotEls.push(wrapper); |
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nav.appendChild(wrapper); |
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|
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// Click + keyboard |
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function scrollToSection() { |
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var el = document.getElementById(item.targetId); |
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if (!el) return; |
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var top = el.getBoundingClientRect().top + window.pageYOffset + scrollOff; |
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window.scrollTo({ top: top, behavior: 'smooth' }); |
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} |
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wrapper.addEventListener('click', scrollToSection); |
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wrapper.addEventListener('keydown', function (e) { |
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if (e.key === 'Enter' || e.key === ' ') scrollToSection(); |
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}); |
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}); |
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|
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document.body.appendChild(nav); |
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|
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// ---- Active dot tracking ---- // |
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var ticking = false; |
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var activeIndex = 0; |
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|
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function findActiveIndex() { |
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var winH = window.innerHeight; |
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var scrollY = window.pageYOffset; |
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var best = 0; |
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|
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items.forEach(function (item, i) { |
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var el = document.getElementById(item.targetId); |
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if (!el) return; |
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var top = el.getBoundingClientRect().top + scrollY; |
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// Activate when section top is in upper 60% of viewport |
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if (scrollY + winH * 0.4 >= top) { |
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best = i; |
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} |
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}); |
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return best; |
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} |
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|
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function updateNav() { |
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var idx = findActiveIndex(); |
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if (idx === activeIndex && ticking === false) { |
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// no change but still update progress if first time |
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} |
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activeIndex = idx; |
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|
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dotEls.forEach(function (el, i) { |
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if (i === idx) { el.classList.add('bkbg-opn-active'); } |
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else { el.classList.remove('bkbg-opn-active'); } |
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}); |
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|
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// Progress line: fill from first dot to active dot |
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if (trackFill && dotEls.length > 1) { |
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var pct = idx / (dotEls.length - 1) * 100; |
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trackFill.style.height = pct + '%'; |
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} |
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|
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ticking = false; |
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} |
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|
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window.addEventListener('scroll', function () { |
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if (!ticking) { |
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requestAnimationFrame(updateNav); |
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ticking = true; |
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} |
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}, { passive: true }); |
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|
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// Initial call |
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updateNav(); |
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} |
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|
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document.querySelectorAll('.bkbg-opn-app').forEach(function (root) { |
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initBlock(root); |
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}); |
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})(); |
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|
