Sha256: 548f5d12f6125f35ed3e431923af083a88777813482a09edb846380281c783f9
Contents?: true
Size: 1.74 KB
Versions: 41
Compression:
Stored size: 1.74 KB
Contents
; (function () {
// Tell the browser not to handle scrolling when restoring via the history or
// when reloading
if ('scrollRestoration' in history) {
history.scrollRestoration = 'manual'
}
var SCROLL_POSITION = 'scroll-position'
var PAGE_INVALIDATED = 'page-invalidated'
// Persist the scroll position on refresh
addEventListener('beforeunload', function () {
sessionStorage.setItem(SCROLL_POSITION, JSON.stringify(scrollData()))
});
// Invalidate the page when the next page is different from the current page
// Persist scroll information across pages
document.addEventListener('turbolinks:before-visit', function (event) {
if (event.data.url !== location.href) {
sessionStorage.setItem(PAGE_INVALIDATED, 'true')
}
sessionStorage.setItem(SCROLL_POSITION, JSON.stringify(scrollData()))
})
// When a page is fully loaded:
// 1. Get the persisted scroll position
// 2. If the locations match and the load did not originate from a page
// invalidation,
// 3. scroll to the persisted position if there, or to the top otherwise
// 4. Remove the persisted information
addEventListener('turbolinks:load', function (event) {
var scrollPosition = JSON.parse(sessionStorage.getItem(SCROLL_POSITION))
if (shouldScroll(scrollPosition)) {
scrollTo(scrollPosition.scrollX, scrollPosition.scrollY)
} else {
scrollTo(0, 0)
}
sessionStorage.removeItem(PAGE_INVALIDATED)
});
function shouldScroll(scrollPosition) {
return (scrollPosition
&& scrollPosition.location === location.href
&& !JSON.parse(sessionStorage.getItem(PAGE_INVALIDATED)))
}
function scrollData() {
return {
scrollX: scrollX,
scrollY: scrollY,
location: location.href
}
}
})()
Version data entries
41 entries across 41 versions & 2 rubygems