73 lines
3.0 KiB
JavaScript
73 lines
3.0 KiB
JavaScript
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function $parcel$export(e, n, v, s) {
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Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});
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}
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$parcel$export(module.exports, "focusWithoutScrolling", () => $1117b6c0d4c4c164$export$de79e2c695e052f3);
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/*
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* Copyright 2020 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/ function $1117b6c0d4c4c164$export$de79e2c695e052f3(element) {
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if ($1117b6c0d4c4c164$var$supportsPreventScroll()) element.focus({
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preventScroll: true
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});
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else {
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let scrollableElements = $1117b6c0d4c4c164$var$getScrollableElements(element);
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element.focus();
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$1117b6c0d4c4c164$var$restoreScrollPosition(scrollableElements);
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}
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}
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let $1117b6c0d4c4c164$var$supportsPreventScrollCached = null;
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function $1117b6c0d4c4c164$var$supportsPreventScroll() {
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if ($1117b6c0d4c4c164$var$supportsPreventScrollCached == null) {
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$1117b6c0d4c4c164$var$supportsPreventScrollCached = false;
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try {
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let focusElem = document.createElement('div');
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focusElem.focus({
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get preventScroll () {
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$1117b6c0d4c4c164$var$supportsPreventScrollCached = true;
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return true;
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}
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});
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} catch {
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// Ignore
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}
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}
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return $1117b6c0d4c4c164$var$supportsPreventScrollCached;
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}
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function $1117b6c0d4c4c164$var$getScrollableElements(element) {
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let parent = element.parentNode;
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let scrollableElements = [];
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let rootScrollingElement = document.scrollingElement || document.documentElement;
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while(parent instanceof HTMLElement && parent !== rootScrollingElement){
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if (parent.offsetHeight < parent.scrollHeight || parent.offsetWidth < parent.scrollWidth) scrollableElements.push({
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element: parent,
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scrollTop: parent.scrollTop,
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scrollLeft: parent.scrollLeft
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});
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parent = parent.parentNode;
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}
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if (rootScrollingElement instanceof HTMLElement) scrollableElements.push({
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element: rootScrollingElement,
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scrollTop: rootScrollingElement.scrollTop,
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scrollLeft: rootScrollingElement.scrollLeft
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});
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return scrollableElements;
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}
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function $1117b6c0d4c4c164$var$restoreScrollPosition(scrollableElements) {
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for (let { element: element, scrollTop: scrollTop, scrollLeft: scrollLeft } of scrollableElements){
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element.scrollTop = scrollTop;
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element.scrollLeft = scrollLeft;
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}
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}
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//# sourceMappingURL=focusWithoutScrolling.main.js.map
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