/
next.js
54 lines (41 loc) · 1.85 KB
/
next.js
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export default (shower) => {
const { stepSelector, activeSlideClass, visitedSlideClass } = shower.options;
let innerSteps;
let activeIndex;
const isActive = (step) => step.classList.contains(activeSlideClass);
const isVisited = (step) => step.classList.contains(visitedSlideClass);
const setInnerStepsState = () => {
if (shower.isListMode) return;
const slide = shower.activeSlide;
innerSteps = [...slide.element.querySelectorAll(stepSelector)];
activeIndex =
innerSteps.length && innerSteps.every(isVisited)
? innerSteps.length
: innerSteps.filter(isActive).length - 1;
slide.state.innerStepCount = innerSteps.length;
};
shower.addEventListener('start', setInnerStepsState);
shower.addEventListener('modechange', setInnerStepsState);
shower.addEventListener('slidechange', setInnerStepsState);
shower.addEventListener('next', (event) => {
if (shower.isListMode || event.defaultPrevented || !event.cancelable) return;
activeIndex++;
innerSteps.forEach((step, index) => {
step.classList.toggle(visitedSlideClass, index < activeIndex);
step.classList.toggle(activeSlideClass, index === activeIndex);
});
if (activeIndex < innerSteps.length) {
event.preventDefault();
}
});
shower.addEventListener('prev', (event) => {
if (shower.isListMode || event.defaultPrevented || !event.cancelable) return;
if (activeIndex === -1 || activeIndex === innerSteps.length) return;
activeIndex--;
innerSteps.forEach((step, index) => {
step.classList.toggle(visitedSlideClass, index < activeIndex + 1);
step.classList.toggle(activeSlideClass, index === activeIndex);
});
event.preventDefault();
});
};