112 lines
3.6 KiB
JavaScript
112 lines
3.6 KiB
JavaScript
/* global KEEP */
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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(
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(element) => {
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const target = document.getElementById(
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decodeURI(element.getAttribute('href')).replace('#', '')
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)
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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.classList.add('hide')
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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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},
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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:
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tocElement.scrollTop -
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tocElement.offsetHeight / 2 +
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target.getBoundingClientRect().top -
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tocElement.getBoundingClientRect().top
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})
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},
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showPageAsideWhenHasTOC() {
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const openHandle = () => {
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const styleStatus = KEEP.getStyleStatus()
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const key = 'isOpenPageAside'
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if (styleStatus && styleStatus.hasOwnProperty(key)) {
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KEEP.utils.leftSideToggle.pageAsideHandleOfTOC(styleStatus[key])
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} else {
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KEEP.utils.leftSideToggle.pageAsideHandleOfTOC(true)
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}
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}
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const initOpenKey = 'init_open'
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if (KEEP.theme_config.toc.hasOwnProperty(initOpenKey)) {
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KEEP.theme_config.toc[initOpenKey]
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? openHandle()
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: KEEP.utils.leftSideToggle.pageAsideHandleOfTOC(false)
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} else {
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openHandle()
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}
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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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const pageAsideDom = document.querySelector('.page-aside')
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pageAsideDom && KEEP.utils.pageContainer_dom.removeChild(pageAsideDom)
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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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