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// Team Members carousel navigation (scroll-snap based). |
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(function () { |
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function initCarousel(root) { |
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var track = root.querySelector('.bkbg-tm-track'); |
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if (!track) return; |
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|
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var settingsRoot = root.closest('.bkbg-tm-wrap') || root; |
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var infiniteEnabled = settingsRoot.getAttribute('data-bkbg-infinite') !== '0'; |
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var autoScrollEnabled = settingsRoot.getAttribute('data-bkbg-autoscroll') === '1'; |
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var autoScrollSpeed = parseFloat(settingsRoot.getAttribute('data-bkbg-autoscroll-speed') || '40'); |
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if (!isFinite(autoScrollSpeed) || autoScrollSpeed < 0) autoScrollSpeed = 40; |
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var autoScrollPauseOnHover = settingsRoot.getAttribute('data-bkbg-autoscroll-hover') !== '0'; |
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|
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var prev = root.querySelector('[data-bkbg-nav="prev"], .bkbg-tm-prev'); |
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var next = root.querySelector('[data-bkbg-nav="next"], .bkbg-tm-next'); |
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var dots = root.querySelectorAll('[data-bkbg-dot]'); |
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var progressBar = root.querySelector('.bkbg-tm-progress-bar'); |
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var fractionCurrent = root.querySelector('[data-bkbg-fraction="current"]'); |
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var fractionTotal = root.querySelector('[data-bkbg-fraction="total"]'); |
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|
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var baseCount = 0; |
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var didClone = false; |
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var isNormalizing = false; |
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var segmentStart = 0; |
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var segmentWidth = 0; |
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|
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function disableTabbing(el) { |
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try { |
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var focusables = el.querySelectorAll('a, button, input, textarea, select'); |
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for (var i = 0; i < focusables.length; i++) { |
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focusables[i].setAttribute('tabindex', '-1'); |
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} |
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} catch (e) { } |
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} |
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|
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function setupInfinite() { |
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if (!infiniteEnabled) return; |
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var slides = getSlides(); |
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baseCount = slides.length; |
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if (baseCount < 2) return; |
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if (didClone) return; |
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|
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var originals = Array.prototype.slice.call(slides); |
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var before = []; |
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var after = []; |
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for (var i = 0; i < originals.length; i++) { |
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var c1 = originals[i].cloneNode(true); |
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c1.classList.add('is-clone'); |
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c1.setAttribute('aria-hidden', 'true'); |
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disableTabbing(c1); |
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after.push(c1); |
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|
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var c2 = originals[i].cloneNode(true); |
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c2.classList.add('is-clone'); |
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c2.setAttribute('aria-hidden', 'true'); |
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disableTabbing(c2); |
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before.push(c2); |
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} |
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|
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for (var j = before.length - 1; j >= 0; j--) { |
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track.insertBefore(before[j], track.firstChild); |
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} |
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for (var k = 0; k < after.length; k++) { |
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track.appendChild(after[k]); |
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} |
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|
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didClone = true; |
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window.requestAnimationFrame(function () { |
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measureInfinite(true); |
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syncIndicators(); |
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}); |
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} |
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|
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function measureInfinite(recenter) { |
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if (!infiniteEnabled || !didClone || !baseCount) return; |
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var slides = getSlides(); |
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if (!slides || slides.length < baseCount * 3) return; |
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var middleFirst = slides[baseCount]; |
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var afterFirst = slides[baseCount * 2]; |
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if (!middleFirst || !afterFirst) return; |
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|
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var nextStart = middleFirst.offsetLeft; |
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var nextWidth = afterFirst.offsetLeft - middleFirst.offsetLeft; |
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if (!isFinite(nextStart) || !isFinite(nextWidth) || nextWidth <= 0) return; |
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|
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if (recenter) { |
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var local = track.scrollLeft - segmentStart; |
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if (segmentWidth > 0) { |
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local = local % segmentWidth; |
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if (local < 0) local += segmentWidth; |
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} else { |
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local = 0; |
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} |
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segmentStart = nextStart; |
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segmentWidth = nextWidth; |
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track.scrollLeft = segmentStart + local; |
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} else { |
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segmentStart = nextStart; |
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segmentWidth = nextWidth; |
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} |
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} |
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|
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function normalizeInfiniteScroll() { |
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if (!infiniteEnabled || !didClone) return; |
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if (!segmentWidth || !isFinite(segmentWidth)) { |
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measureInfinite(false); |
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} |
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if (!segmentWidth) return; |
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|
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if (track.scrollLeft < (segmentStart - 1) || track.scrollLeft >= (segmentStart + segmentWidth + 1)) { |
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var local = track.scrollLeft - segmentStart; |
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local = local % segmentWidth; |
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if (local < 0) local += segmentWidth; |
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isNormalizing = true; |
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track.scrollLeft = segmentStart + local; |
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isNormalizing = false; |
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} |
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} |
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|
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function getSlides() { |
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return track.querySelectorAll('.bkbg-tm-slide'); |
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} |
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|
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function getCurrentIndex() { |
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var slides = getSlides(); |
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if (!slides.length) return 0; |
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var trackRect = track.getBoundingClientRect(); |
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var currentIndex = 0; |
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for (var i = 0; i < slides.length; i++) { |
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var r = slides[i].getBoundingClientRect(); |
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if (r.left >= trackRect.left - 10) { |
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currentIndex = i; |
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break; |
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} |
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} |
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return currentIndex; |
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} |
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|
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function scrollToIndex(index) { |
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var slides = getSlides(); |
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if (!slides.length) return; |
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var i = Math.max(0, Math.min(slides.length - 1, index)); |
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slides[i].scrollIntoView({ behavior: 'smooth', inline: 'start', block: 'nearest' }); |
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} |
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|
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function scrollToBaseIndex(index) { |
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if (!infiniteEnabled || !didClone || !baseCount) { |
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scrollToIndex(index); |
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return; |
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} |
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var slides = getSlides(); |
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if (!slides.length) return; |
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var idx = index % baseCount; |
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if (idx < 0) idx += baseCount; |
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var target = baseCount + idx; |
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if (target < 0) target = 0; |
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if (target > slides.length - 1) target = slides.length - 1; |
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slides[target].scrollIntoView({ behavior: 'smooth', inline: 'start', block: 'nearest' }); |
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} |
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|
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function scrollByDir(dir) { |
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var slides = getSlides(); |
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if (!slides.length) return; |
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var currentIndex = getCurrentIndex(); |
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scrollToIndex(currentIndex + dir); |
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} |
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|
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function syncIndicators() { |
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var slides = getSlides(); |
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if (!slides.length) return; |
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|
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var idx = getCurrentIndex(); |
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var total = slides.length; |
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if (infiniteEnabled && didClone && baseCount) { |
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total = baseCount; |
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idx = idx % baseCount; |
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if (idx < 0) idx += baseCount; |
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} |
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|
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if (dots && dots.length) { |
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for (var i = 0; i < dots.length; i++) { |
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if (i === idx) dots[i].classList.add('is-active'); |
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else dots[i].classList.remove('is-active'); |
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} |
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} |
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|
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|
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if (progressBar) { |
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var pct = 0; |
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if (infiniteEnabled && didClone) { |
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if (!segmentWidth) measureInfinite(false); |
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var local = track.scrollLeft - segmentStart; |
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if (segmentWidth > 0) { |
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local = local % segmentWidth; |
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if (local < 0) local += segmentWidth; |
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} |
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var maxLocal = segmentWidth - track.clientWidth; |
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pct = maxLocal > 0 ? (local / maxLocal) * 100 : 0; |
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} else { |
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var max = track.scrollWidth - track.clientWidth; |
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pct = max > 0 ? (track.scrollLeft / max) * 100 : 0; |
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} |
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if (pct < 0) pct = 0; |
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if (pct > 100) pct = 100; |
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progressBar.style.width = pct + '%'; |
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} |
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|
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if (fractionCurrent) fractionCurrent.textContent = String(idx + 1); |
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if (fractionTotal) fractionTotal.textContent = String(total); |
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} |
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|
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if (prev) { |
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prev.addEventListener('click', function (e) { |
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e.preventDefault(); |
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scrollByDir(-1); |
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}); |
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} |
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|
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if (next) { |
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next.addEventListener('click', function (e) { |
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e.preventDefault(); |
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scrollByDir(1); |
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}); |
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} |
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|
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if (dots && dots.length) { |
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for (var i = 0; i < dots.length; i++) { |
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(function (btn) { |
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btn.addEventListener('click', function (e) { |
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e.preventDefault(); |
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var idx = parseInt(btn.getAttribute('data-bkbg-dot') || '0', 10); |
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scrollToBaseIndex(idx); |
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}); |
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})(dots[i]); |
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} |
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} |
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|
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// Auto-scroll (continuous) |
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var rafId = null; |
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var lastTs = 0; |
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var autoPaused = false; |
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var originalSnap = track.style.scrollSnapType; |
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|
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function tick(ts) { |
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if (!autoScrollEnabled) return; |
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if (!lastTs) lastTs = ts; |
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var dt = ts - lastTs; |
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lastTs = ts; |
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if (!document.hidden && !autoPaused) { |
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track.scrollLeft += (autoScrollSpeed * dt) / 1000; |
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normalizeInfiniteScroll(); |
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syncIndicators(); |
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} |
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rafId = window.requestAnimationFrame(tick); |
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} |
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|
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function startAutoScroll() { |
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if (!autoScrollEnabled) return; |
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if (rafId) return; |
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track.style.scrollSnapType = 'none'; |
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lastTs = 0; |
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rafId = window.requestAnimationFrame(tick); |
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} |
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|
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function stopAutoScroll() { |
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if (rafId) { |
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window.cancelAnimationFrame(rafId); |
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rafId = null; |
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} |
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track.style.scrollSnapType = originalSnap; |
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lastTs = 0; |
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} |
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|
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if (autoScrollEnabled) { |
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startAutoScroll(); |
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if (autoScrollPauseOnHover) { |
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root.addEventListener('mouseenter', function () { autoPaused = true; }); |
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root.addEventListener('mouseleave', function () { autoPaused = false; }); |
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} |
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document.addEventListener('visibilitychange', function () { |
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if (document.hidden) stopAutoScroll(); |
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else startAutoScroll(); |
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}); |
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} |
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|
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setupInfinite(); |
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|
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try { |
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var imgs = track.querySelectorAll('img'); |
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for (var ii = 0; ii < imgs.length; ii++) { |
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(function (img) { |
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if (!img) return; |
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if (img.complete) return; |
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img.addEventListener('load', function () { |
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window.requestAnimationFrame(function () { |
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measureInfinite(true); |
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syncIndicators(); |
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}); |
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}, { passive: true }); |
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})(imgs[ii]); |
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} |
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} catch (e) { } |
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|
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window.addEventListener('resize', function () { |
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window.requestAnimationFrame(function () { |
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measureInfinite(true); |
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syncIndicators(); |
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}); |
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}, { passive: true }); |
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|
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syncIndicators(); |
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track.addEventListener('scroll', function () { |
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normalizeInfiniteScroll(); |
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if (isNormalizing) return; |
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syncIndicators(); |
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}, { passive: true }); |
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} |
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|
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function initAll() { |
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var blocks = document.querySelectorAll('.wp-block-blockenberg-team-members .bkbg-tm-carousel'); |
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for (var i = 0; i < blocks.length; i++) initCarousel(blocks[i]); |
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} |
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|
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if (document.readyState === 'loading') { |
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document.addEventListener('DOMContentLoaded', initAll); |
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} else { |
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initAll(); |
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} |
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})(); |
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|
