40 lines
1.3 KiB
JavaScript
40 lines
1.3 KiB
JavaScript
/*
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https://dev.to/konnorrogers/maintain-scroll-position-in-turbo-without-data-turbo-permanent-2b1i
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modified to add support for horizontal scrolling
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*/
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if (!window.scrollPositions) {
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window.scrollPositions = {};
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}
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function preserveScroll() {
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document.querySelectorAll("[data-preserve-scroll]").forEach((element) => {
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scrollPositions[element.id] = {
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top: element.scrollTop,
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left: element.scrollLeft
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};
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});
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}
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function restoreScroll(event) {
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document.querySelectorAll("[data-preserve-scroll]").forEach((element) => {
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if (scrollPositions[element.id]) {
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element.scrollTop = scrollPositions[element.id].top;
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element.scrollLeft = scrollPositions[element.id].left;
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}
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});
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if (!event.detail.newBody) return;
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// event.detail.newBody is the body element to be swapped in.
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// https://turbo.hotwired.dev/reference/events
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event.detail.newBody.querySelectorAll("[data-preserve-scroll]").forEach((element) => {
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if (scrollPositions[element.id]) {
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element.scrollTop = scrollPositions[element.id].top;
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element.scrollLeft = scrollPositions[element.id].left;
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}
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});
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}
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window.addEventListener("turbo:before-cache", preserveScroll);
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window.addEventListener("turbo:before-render", restoreScroll);
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window.addEventListener("turbo:render", restoreScroll);
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