54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
import Vue from 'vue'
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import xss from 'xss'
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import marked from 'marked'
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const options = {
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whiteList: {
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...xss.whiteList,
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summary: [],
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h1: ['id'],
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h2: ['id'],
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h3: ['id'],
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h4: ['id'],
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h5: ['id'],
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h6: ['id'],
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},
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}
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const configuredXss = new xss.FilterXSS(options)
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const headerPrefix = 'user-defined-'
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function compileMarkdown(target, markdown) {
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target.innerHTML = configuredXss.process(marked(markdown, { headerPrefix }))
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}
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function onHashChange() {
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const fragment = decodeURIComponent(location.hash.substr(1)) // decodeURIComponent prevents issues with emoji and other unicode character
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const fragmentElement = document.getElementById(headerPrefix + fragment)
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if (fragmentElement != null) {
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fragmentElement.scrollIntoView()
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}
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}
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Vue.directive('compiled-markdown', {
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bind(el, binding, vnode) {
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compileMarkdown(el, binding.value)
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window.addEventListener('hashchange', onHashChange)
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// `hashchange` does not get triggered if the link doesn't change the hash.
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el.addEventListener('click', (event) => {
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const hrefLocation = event.target.getAttribute('href')
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if (hrefLocation === decodeURIComponent(location.hash)) {
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onHashChange()
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}
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})
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onHashChange()
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},
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update(el, binding, vnode) {
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compileMarkdown(el, binding.value)
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},
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})
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