130 lines
4.2 KiB
Vue
130 lines
4.2 KiB
Vue
<template>
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<ul ref="nav" class="doc-section-nav">
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<li v-for="doc of docs" :key="doc.label" :class="['navbar-item', { 'active-navbar-item': activeId === doc.id }]">
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<div class="navbar-item-content">
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<NuxtLink :to="`${checkRouteName}/#${doc.id}`">
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<button class="p-link">{{ doc.label }}</button>
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</NuxtLink>
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</div>
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<template v-if="doc.children">
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<ul>
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<li v-for="child of doc.children" :key="child.label" :class="['navbar-item', { 'active-navbar-item': activeId === child.id }]">
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<div class="navbar-item-content">
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<NuxtLink :to="`${checkRouteName}/#${child.id}`">
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<button class="p-link" @click="onButtonClick(child)">
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{{ child.label }}
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</button>
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</NuxtLink>
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</div>
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</li>
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</ul>
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</template>
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</li>
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</ul>
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</template>
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<script>
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import { DomHandler, ObjectUtils } from 'primevue/utils';
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export default {
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props: ['docs'],
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data() {
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return {
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activeId: null,
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isScrollBlocked: false,
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scrollEndTimer: null,
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topbarHeight: 0
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};
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},
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watch: {
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'$route.hash'() {
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this.scrollCurrentUrl();
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}
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},
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mounted() {
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this.scrollCurrentUrl();
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window.addEventListener('scroll', this.onScroll, { passive: true });
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},
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beforeUnmount() {
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window.removeEventListener('scroll', this.onScroll, { passive: true });
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},
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methods: {
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onScroll() {
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if (!this.isScrollBlocked) {
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const labels = document.querySelectorAll(':is(h1,h2,h3).doc-section-label');
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const windowScrollTop = DomHandler.getWindowScrollTop();
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labels.forEach((label) => {
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const { top } = DomHandler.getOffset(label);
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const threshold = this.getThreshold(label);
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if (top - threshold <= windowScrollTop) {
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const link = DomHandler.findSingle(label, 'a');
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this.activeId = link.id;
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}
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});
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}
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clearTimeout(this.scrollEndTimer);
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this.scrollEndTimer = setTimeout(() => {
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this.isScrollBlocked = false;
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const activeItem = DomHandler.findSingle(this.$refs.nav, '.active-navbar-item');
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activeItem && activeItem.scrollIntoView({ block: 'nearest', inline: 'start' });
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}, 50);
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},
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scrollToLabelById(id, behavior = 'smooth') {
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const label = document.getElementById(id);
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label && label.parentElement.scrollIntoView({ block: 'start', behavior });
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},
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onButtonClick(doc) {
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this.activeId = doc.id;
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setTimeout(() => {
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this.scrollToLabelById(doc.id, 'smooth');
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this.isScrollBlocked = true;
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}, 1);
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},
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getThreshold(label) {
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if (!this.topbarHeight) {
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const topbar = DomHandler.findSingle(document.body, '.layout-topbar');
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this.topbarHeight = topbar ? DomHandler.getHeight(topbar) : 0;
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}
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return this.topbarHeight + DomHandler.getHeight(label) * 1.5;
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},
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getIdOfTheSection(section) {
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return section.querySelector('a').getAttribute('id');
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},
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scrollCurrentUrl() {
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const hash = window.location.hash.substring(1);
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const hasHash = ObjectUtils.isNotEmpty(hash);
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const id = hasHash ? hash : (this.docs[0] || {}).id;
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this.activeId = id;
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hasHash &&
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setTimeout(() => {
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this.scrollToLabelById(id);
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}, 1);
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}
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},
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computed: {
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checkRouteName() {
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const path = this.$router.currentRoute.value.path;
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if (path.lastIndexOf('/') === path.length - 1) {
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return path.slice(0, -1);
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}
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return path;
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}
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}
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};
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</script>
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