import $ from 'jquery'; import '~/behaviors/markdown/render_gfm'; import Flash from '../../flash'; import { handleLocationHash } from '../../lib/utils/common_utils'; import axios from '../../lib/utils/axios_utils'; import { __ } from '~/locale'; const loadRichBlobViewer = type => { switch (type) { case 'balsamiq': return import(/* webpackChunkName: 'balsamiq_viewer' */ '../balsamiq_viewer'); case 'notebook': return import(/* webpackChunkName: 'notebook_viewer' */ '../notebook_viewer'); case 'openapi': return import(/* webpackChunkName: 'openapi_viewer' */ '../openapi_viewer'); case 'pdf': return import(/* webpackChunkName: 'pdf_viewer' */ '../pdf_viewer'); case 'sketch': return import(/* webpackChunkName: 'sketch_viewer' */ '../sketch_viewer'); case 'stl': return import(/* webpackChunkName: 'stl_viewer' */ '../stl_viewer'); default: return Promise.resolve(); } }; export const handleBlobRichViewer = (viewer, type) => { if (!viewer || !type) return; loadRichBlobViewer(type) .then(module => module?.default(viewer)) .catch(error => { Flash(__('Error loading file viewer.')); throw error; }); }; export default class BlobViewer { constructor() { const viewer = document.querySelector('.blob-viewer[data-type="rich"]'); const type = viewer?.dataset?.richType; BlobViewer.initAuxiliaryViewer(); handleBlobRichViewer(viewer, type); this.initMainViewers(); } static initAuxiliaryViewer() { const auxiliaryViewer = document.querySelector('.blob-viewer[data-type="auxiliary"]'); if (!auxiliaryViewer) return; BlobViewer.loadViewer(auxiliaryViewer); } initMainViewers() { this.$fileHolder = $('.file-holder'); if (!this.$fileHolder.length) return; this.switcher = document.querySelector('.js-blob-viewer-switcher'); this.switcherBtns = document.querySelectorAll('.js-blob-viewer-switch-btn'); this.copySourceBtn = document.querySelector('.js-copy-blob-source-btn'); this.simpleViewer = this.$fileHolder[0].querySelector('.blob-viewer[data-type="simple"]'); this.richViewer = this.$fileHolder[0].querySelector('.blob-viewer[data-type="rich"]'); this.initBindings(); this.switchToInitialViewer(); } switchToInitialViewer() { const initialViewer = this.$fileHolder[0].querySelector('.blob-viewer:not(.hidden)'); let initialViewerName = initialViewer.getAttribute('data-type'); if (this.switcher && window.location.hash.indexOf('#L') === 0) { initialViewerName = 'simple'; } this.switchToViewer(initialViewerName); } initBindings() { if (this.switcherBtns.length) { Array.from(this.switcherBtns).forEach(el => { el.addEventListener('click', this.switchViewHandler.bind(this)); }); } if (this.copySourceBtn) { this.copySourceBtn.addEventListener('click', () => { if (this.copySourceBtn.classList.contains('disabled')) return this.copySourceBtn.blur(); return this.switchToViewer('simple'); }); } } switchViewHandler(e) { const target = e.currentTarget; e.preventDefault(); this.switchToViewer(target.getAttribute('data-viewer')); } toggleCopyButtonState() { if (!this.copySourceBtn) return; if (this.simpleViewer.getAttribute('data-loaded')) { this.copySourceBtn.setAttribute('title', __('Copy file contents')); this.copySourceBtn.classList.remove('disabled'); } else if (this.activeViewer === this.simpleViewer) { this.copySourceBtn.setAttribute( 'title', __('Wait for the file to load to copy its contents'), ); this.copySourceBtn.classList.add('disabled'); } else { this.copySourceBtn.setAttribute( 'title', __('Switch to the source to copy the file contents'), ); this.copySourceBtn.classList.add('disabled'); } $(this.copySourceBtn).tooltip('_fixTitle'); } switchToViewer(name) { const newViewer = this.$fileHolder[0].querySelector(`.blob-viewer[data-type='${name}']`); if (this.activeViewer === newViewer) return; const oldButton = document.querySelector('.js-blob-viewer-switch-btn.active'); const newButton = document.querySelector(`.js-blob-viewer-switch-btn[data-viewer='${name}']`); const oldViewer = this.$fileHolder[0].querySelector(`.blob-viewer:not([data-type='${name}'])`); if (oldButton) { oldButton.classList.remove('active'); } if (newButton) { newButton.classList.add('active'); newButton.blur(); } if (oldViewer) { oldViewer.classList.add('hidden'); } newViewer.classList.remove('hidden'); this.activeViewer = newViewer; this.toggleCopyButtonState(); BlobViewer.loadViewer(newViewer) .then(viewer => { $(viewer).renderGFM(); this.$fileHolder.trigger('highlight:line'); handleLocationHash(); this.toggleCopyButtonState(); }) .catch(() => new Flash(__('Error loading viewer'))); } static loadViewer(viewerParam) { const viewer = viewerParam; const url = viewer.getAttribute('data-url'); if (!url || viewer.getAttribute('data-loaded') || viewer.getAttribute('data-loading')) { return Promise.resolve(viewer); } viewer.setAttribute('data-loading', 'true'); return axios.get(url).then(({ data }) => { viewer.innerHTML = data.html; viewer.setAttribute('data-loaded', 'true'); return viewer; }); } }