88 lines
3.1 KiB
JavaScript
88 lines
3.1 KiB
JavaScript
function initTOC() {
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KEEP.utils.navItems = document.querySelectorAll('.post-toc-wrap .post-toc li');
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if (KEEP.utils.navItems.length > 0) {
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KEEP.utils = {
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...KEEP.utils,
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findActiveIndexByTOC() {
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if (!Array.isArray(KEEP.utils.sections)) return;
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let index = KEEP.utils.sections.findIndex(element => {
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return element && element.getBoundingClientRect().top - 20 > 0;
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});
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if (index === -1) {
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index = KEEP.utils.sections.length - 1;
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} else if (index > 0) {
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index--;
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}
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this.activateNavByIndex(index);
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},
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registerSidebarTOC() {
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KEEP.utils.sections = [...document.querySelectorAll('.post-toc li a.nav-link')].map(element => {
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const target = document.getElementById(decodeURI(element.getAttribute('href')).replace('#', ''));
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element.addEventListener('click', event => {
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event.preventDefault();
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const offset = target.getBoundingClientRect().top + window.scrollY;
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window.anime({
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targets: document.scrollingElement,
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duration: 500,
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easing: 'linear',
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scrollTop: offset - 10,
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complete: function () {
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setTimeout(() => {
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KEEP.utils.pageTop_dom.style.transform = 'translateY(-100%)';
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}, 100)
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}
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});
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});
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return target;
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});
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},
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activateNavByIndex(index) {
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const target = document.querySelectorAll('.post-toc li a.nav-link')[index];
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if (!target || target.classList.contains('active-current')) return;
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document.querySelectorAll('.post-toc .active').forEach(element => {
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element.classList.remove('active', 'active-current');
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});
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target.classList.add('active', 'active-current');
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let parent = target.parentNode;
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while (!parent.matches('.post-toc')) {
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if (parent.matches('li')) parent.classList.add('active');
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parent = parent.parentNode;
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}
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// Scrolling to center active TOC element if TOC content is taller then viewport.
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const tocElement = document.querySelector('.post-toc-wrap');
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window.anime({
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targets: tocElement,
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duration: 200,
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easing: 'linear',
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scrollTop: tocElement.scrollTop - (tocElement.offsetHeight / 2) + target.getBoundingClientRect().top - tocElement.getBoundingClientRect().top
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});
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},
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showPageAsideWhenHasTOC() {
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KEEP.utils.leftSideToggle.toggleBar.style.display = 'flex';
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KEEP.utils.leftSideToggle.isOpenPageAside = true;
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KEEP.utils.leftSideToggle.changePageLayoutWhenOpenToggle(KEEP.utils.leftSideToggle.isOpenPageAside);
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}
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}
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KEEP.utils.showPageAsideWhenHasTOC();
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KEEP.utils.registerSidebarTOC();
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} else {
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KEEP.utils.pageContainer_dom.removeChild(document.querySelector('.page-aside'));
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}
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}
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if (KEEP.theme_config.pjax.enable === true && KEEP.utils) {
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initTOC();
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} else {
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window.addEventListener('DOMContentLoaded', initTOC);
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}
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