63 lines
1.8 KiB
JavaScript
63 lines
1.8 KiB
JavaScript
import Vue from 'vue';
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import DiagramPerformanceWarning from '../components/diagram_performance_warning.vue';
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import { unrestrictedPages } from './constants';
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/**
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* Create alert element.
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*
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* @param {Element} krokiImage Kroki `img` element
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* @return {Element} Alert element
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*/
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function createAlert(krokiImage) {
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const app = new Vue({
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el: document.createElement('div'),
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name: 'DiagramPerformanceWarningRoot',
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render(createElement) {
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return createElement(DiagramPerformanceWarning, {
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on: {
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closeAlert() {
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app.$destroy();
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app.$el.remove();
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},
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showImage() {
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krokiImage.removeAttribute('hidden');
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app.$destroy();
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app.$el.remove();
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},
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},
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});
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},
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});
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return app.$el;
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}
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/**
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* Add warning alert to hidden Kroki images,
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* or show Kroki image if on an unrestricted page.
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*
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* Kroki images are given a hidden attribute by the
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* backend when the original markdown source is large.
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*
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* @param {Array<Element>} krokiImages Array of hidden Kroki `img` elements
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*/
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export function renderKroki(krokiImages) {
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const pageName = document.querySelector('body').dataset.page;
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const isUnrestrictedPage = unrestrictedPages.includes(pageName);
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krokiImages.forEach((krokiImage) => {
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if (isUnrestrictedPage) {
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krokiImage.removeAttribute('hidden');
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return;
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}
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const parent = krokiImage.parentElement;
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// A single Kroki image is processed multiple times for some reason,
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// so this condition ensures we only create one alert per Kroki image
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if (!Object.prototype.hasOwnProperty.call(parent.dataset, 'krokiProcessed')) {
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parent.dataset.krokiProcessed = 'true';
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parent.after(createAlert(krokiImage));
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}
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});
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}
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