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$$plugins.define('scrollShadowVert', function (element, options) {
var scrollElm = element.querySelector('.scrollbar'),
listInner = element.querySelector('.scrollbar__inner');
//observer for adding/removing children elements
const observer = new MutationObserver(function (mutations) {
var childrenMutations = mutations.filter((x) => x.type === "childList");
if (childrenMutations.length > 0) {
checkScrollPos(scrollElm);
}
});
observer.observe(listInner, { subtree: true, childList: true });
//observer for initialized class
if (options.initialize == true) {
const targetNode = element;
const observer2 = new MutationObserver(function (mutations) {
var classMutations = mutations.filter((x) => x.type === "attributes");
if (classMutations.length > 0 && targetNode.classList.contains('initialized')) {
checkScrollPos(scrollElm);
observer2.disconnect();
}
});
observer2.observe(targetNode, { attributes: true, attributeFilter: ['class'] });
}
checkScrollPos(scrollElm);
scrollElm.addEventListener("scroll", function () {
checkScrollPos(this);
});
function checkScrollPos(scrollContainer) {
if (scrollContainer.scrollTop + element.offsetHeight > listInner.offsetHeight - 8) {
element.classList.add('scrollbarShadow--bottom');
} else {
element.classList.remove('scrollbarShadow--bottom');
}
if (scrollContainer.scrollTop < 8) {
element.classList.add('scrollbarShadow--top');
} else {
element.classList.remove('scrollbarShadow--top');
}
}
//checkScrollInit();
//function checkScrollInit() {
// if (element.offsetHeight >= listInner.offsetHeight) {
// element.classList.add('scrollbarShadow--noScroll');
// } else {
// element.classList.remove('scrollbarShadow--noScroll');
// }
//}
});
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