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mobile support and click redirect #85

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64 changes: 52 additions & 12 deletions src/swiffy-slider-extensions.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,10 @@ const swiffysliderextensions = function() {
},

initSlider(sliderElement) {
if (sliderElement.classList.contains("slider-nav-mousedrag"))
sliderElement.addEventListener("mousedown", (e) => this.handleMouseDrag(e, sliderElement), { passive: true });
if (sliderElement.classList.contains("slider-nav-mousedrag")) {
sliderElement.addEventListener("mousedown", (e) => this.handleMouseDrag(e, sliderElement), {passive: true});
sliderElement.addEventListener("touchstart", (e) => this.handleMouseDrag(e, sliderElement), {passive: true});
}
},

handleMouseDrag(e, sliderElement) {
Expand All @@ -23,14 +25,14 @@ const swiffysliderextensions = function() {
sliderElement.classList.add("dragging");

const startingLeftPos = container.scrollLeft;
const mouseDownStartingXPos = e.clientX;
const mouseDownStartingXPos = e.clientX ?? e.touches[0].pageX;
const slideWidth = container.children[0].offsetWidth + parseInt(window.getComputedStyle(container).columnGap);
const maxLeftPosition = slideWidth * (container.children.length - 1);
const startLeftScroll = container.scrollLeft;
let nextSlideLeftPos = startLeftScroll;

const moveDelegate = (e) => {
const mouseMovedXpos = e.clientX - mouseDownStartingXPos;
const mouseMovedXpos = (e.clientX ?? e.touches[0].pageX) - mouseDownStartingXPos;
const nextDraggingLeftPosition = startingLeftPos - (mouseMovedXpos * 1.8);

if (nextDraggingLeftPosition > 0 && nextDraggingLeftPosition <= maxLeftPosition) {
Expand All @@ -54,17 +56,55 @@ const swiffysliderextensions = function() {
}
}

container.addEventListener('mousemove', moveDelegate, { passive: true });
document.addEventListener('mouseup', () => {
const getVisibleSliders = (e, sliderElement) => {
const container = sliderElement.querySelector('.slider-container');
//returns an array of slide elements that are fully or partially visible
const visibleSlides = [];
//We are using a grid layout and the slides left and right properties include the width of the gap, so when comparing with container width add a gap for each side of the slide gap.
const gapWidth = parseInt(window.getComputedStyle(container).columnGap);
for (const slide of container.children) {
var slideScrollLeftPosition = slide.getBoundingClientRect().left - container.getBoundingClientRect().left;
var slideScrollRightPosition = slideScrollLeftPosition + slide.offsetWidth - gapWidth;
if (slideScrollLeftPosition >= 0 && slideScrollRightPosition <= container.offsetWidth) {
visibleSlides.push(slide);
}
}
return visibleSlides;
}

const sliderTrigger = (e) => {
container.removeEventListener('mousemove', moveDelegate);
container.removeEventListener('touchmove', moveDelegate);
container.style.cursor = null;
if (nextSlideLeftPos < 0) { nextSlideLeftPos = 0; }
container.scroll({
left: nextSlideLeftPos,
behavior: "smooth"
});

if(nextSlideLeftPos != maxLeftPosition && Math.abs(startingLeftPos - nextSlideLeftPos) <= 10) {
currentSlider = getVisibleSliders(e, sliderElement);
if (currentSlider.length > 0) {
if(currentSlider[0].querySelector('a'))
currentSlider[0].querySelector('a').click();
}
}

if(nextSlideLeftPos == maxLeftPosition) {
nextSlideLeftPos = 0;
window.swiffyslider.slide(sliderElement, true);
}
else if (nextSlideLeftPos <= 0) {
nextSlideLeftPos = 0;
}
else {
container.scroll({
left: nextSlideLeftPos,
behavior: "smooth"
});
}
this.draggingtimer = setTimeout(() => { sliderElement.classList.remove("dragging"); }, 550);
}, { once: true, passive: true });
}

container.addEventListener('mousemove', moveDelegate, { passive: true });
container.addEventListener('touchmove', moveDelegate, { passive: true });
document.addEventListener('mouseup', sliderTrigger, { once: true, passive: true });
document.addEventListener('touchend', sliderTrigger, { once: true, passive: true });
}
};
}();
Expand Down