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/* Post Slider — frontend.js */ |
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( function () { |
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function initSlider( wrap ) { |
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const track = wrap.querySelector( '.bkps-track' ); |
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const slides = Array.from( track ? track.querySelectorAll( '.bkps-slide' ) : [] ); |
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if ( slides.length < 2 ) return; |
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|
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const autoplay = wrap.dataset.autoplay === '1'; |
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const speed = parseInt( wrap.dataset.speed ) || 4000; |
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const isSlide = wrap.classList.contains( 'bkps-transition-slide' ); |
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const showDots = wrap.dataset.dots === '1'; |
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|
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let current = 0; |
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let timer = null; |
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|
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/* Build dots dynamically */ |
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if ( showDots ) { |
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const dotsWrap = wrap.querySelector( '.bkps-dots' ); |
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if ( dotsWrap ) { |
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slides.forEach( (_, i) => { |
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const dot = document.createElement( 'button' ); |
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dot.className = 'bkps-dot' + ( i === 0 ? ' bkps-dot-active' : '' ); |
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dot.addEventListener( 'click', () => { clearInterval(timer); goTo(i); startAutoplay(); } ); |
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dotsWrap.appendChild( dot ); |
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} ); |
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} |
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} |
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|
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function updateDots() { |
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wrap.querySelectorAll( '.bkps-dot' ).forEach( (d,i) => d.classList.toggle('bkps-dot-active', i === current) ); |
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} |
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|
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function goTo( idx ) { |
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const prev = current; |
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current = ( idx + slides.length ) % slides.length; |
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|
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if ( isSlide ) { |
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slides[prev].classList.add('bkps-prev-slide'); |
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slides[prev].classList.remove('bkps-active'); |
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slides[current].classList.add('bkps-active'); |
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setTimeout( () => slides[prev].classList.remove('bkps-prev-slide'), 650 ); |
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} else { |
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slides[prev].classList.remove('bkps-active'); |
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slides[current].classList.add('bkps-active'); |
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} |
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updateDots(); |
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} |
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|
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/* Arrows */ |
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const prevBtn = wrap.querySelector('.bkps-prev'); |
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const nextBtn = wrap.querySelector('.bkps-next'); |
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if ( prevBtn ) prevBtn.addEventListener('click', () => { clearInterval(timer); goTo(current-1); startAutoplay(); }); |
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if ( nextBtn ) nextBtn.addEventListener('click', () => { clearInterval(timer); goTo(current+1); startAutoplay(); }); |
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|
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/* Touch swipe */ |
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let touchX = 0; |
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wrap.addEventListener('touchstart', e => { touchX = e.changedTouches[0].clientX; }, {passive:true}); |
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wrap.addEventListener('touchend', e => { |
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const dx = e.changedTouches[0].clientX - touchX; |
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if ( Math.abs(dx) > 50 ) { clearInterval(timer); goTo( dx < 0 ? current+1 : current-1 ); startAutoplay(); } |
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}, {passive:true}); |
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|
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/* Keyboard */ |
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wrap.setAttribute('tabindex', '0'); |
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wrap.addEventListener('keydown', e => { |
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if (e.key==='ArrowLeft') { clearInterval(timer); goTo(current-1); startAutoplay(); } |
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if (e.key==='ArrowRight') { clearInterval(timer); goTo(current+1); startAutoplay(); } |
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}); |
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|
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function startAutoplay() { |
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if ( !autoplay ) return; |
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clearInterval(timer); |
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timer = setInterval( () => goTo(current+1), speed ); |
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} |
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|
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wrap.addEventListener('mouseenter', () => clearInterval(timer)); |
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wrap.addEventListener('mouseleave', startAutoplay); |
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|
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startAutoplay(); |
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} |
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|
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function init() { |
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document.querySelectorAll('.bkps-wrap[data-autoplay]').forEach( initSlider ); |
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} |
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|
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if ( document.readyState === 'loading' ) { |
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document.addEventListener('DOMContentLoaded', init); |
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} else { |
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init(); |
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} |
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}() ); |
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