149 lines
4.2 KiB
JavaScript
149 lines
4.2 KiB
JavaScript
/* global Flash */
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export default class BlobViewer {
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constructor() {
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BlobViewer.initAuxiliaryViewer();
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this.initMainViewers();
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}
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static initAuxiliaryViewer() {
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const auxiliaryViewer = document.querySelector('.blob-viewer[data-type="auxiliary"]');
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if (!auxiliaryViewer) return;
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BlobViewer.loadViewer(auxiliaryViewer);
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}
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initMainViewers() {
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this.$fileHolder = $('.file-holder');
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if (!this.$fileHolder.length) return;
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this.switcher = document.querySelector('.js-blob-viewer-switcher');
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this.switcherBtns = document.querySelectorAll('.js-blob-viewer-switch-btn');
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this.copySourceBtn = document.querySelector('.js-copy-blob-source-btn');
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this.simpleViewer = this.$fileHolder[0].querySelector('.blob-viewer[data-type="simple"]');
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this.richViewer = this.$fileHolder[0].querySelector('.blob-viewer[data-type="rich"]');
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this.initBindings();
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this.switchToInitialViewer();
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}
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switchToInitialViewer() {
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const initialViewer = this.$fileHolder[0].querySelector('.blob-viewer:not(.hidden)');
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let initialViewerName = initialViewer.getAttribute('data-type');
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if (this.switcher && location.hash.indexOf('#L') === 0) {
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initialViewerName = 'simple';
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}
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this.switchToViewer(initialViewerName);
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}
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initBindings() {
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if (this.switcherBtns.length) {
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Array.from(this.switcherBtns)
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.forEach((el) => {
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el.addEventListener('click', this.switchViewHandler.bind(this));
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});
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}
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if (this.copySourceBtn) {
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this.copySourceBtn.addEventListener('click', () => {
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if (this.copySourceBtn.classList.contains('disabled')) return this.copySourceBtn.blur();
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return this.switchToViewer('simple');
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});
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}
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}
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switchViewHandler(e) {
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const target = e.currentTarget;
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e.preventDefault();
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this.switchToViewer(target.getAttribute('data-viewer'));
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}
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toggleCopyButtonState() {
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if (!this.copySourceBtn) return;
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if (this.simpleViewer.getAttribute('data-loaded')) {
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this.copySourceBtn.setAttribute('title', 'Copy source to clipboard');
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this.copySourceBtn.classList.remove('disabled');
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} else if (this.activeViewer === this.simpleViewer) {
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this.copySourceBtn.setAttribute('title', 'Wait for the source to load to copy it to the clipboard');
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this.copySourceBtn.classList.add('disabled');
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} else {
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this.copySourceBtn.setAttribute('title', 'Switch to the source to copy it to the clipboard');
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this.copySourceBtn.classList.add('disabled');
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}
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$(this.copySourceBtn).tooltip('fixTitle');
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}
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switchToViewer(name) {
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const newViewer = this.$fileHolder[0].querySelector(`.blob-viewer[data-type='${name}']`);
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if (this.activeViewer === newViewer) return;
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const oldButton = document.querySelector('.js-blob-viewer-switch-btn.active');
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const newButton = document.querySelector(`.js-blob-viewer-switch-btn[data-viewer='${name}']`);
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const oldViewer = this.$fileHolder[0].querySelector(`.blob-viewer:not([data-type='${name}'])`);
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if (oldButton) {
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oldButton.classList.remove('active');
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}
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if (newButton) {
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newButton.classList.add('active');
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newButton.blur();
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}
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if (oldViewer) {
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oldViewer.classList.add('hidden');
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}
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newViewer.classList.remove('hidden');
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this.activeViewer = newViewer;
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this.toggleCopyButtonState();
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BlobViewer.loadViewer(newViewer)
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.then((viewer) => {
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$(viewer).renderGFM();
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this.$fileHolder.trigger('highlight:line');
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gl.utils.handleLocationHash();
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this.toggleCopyButtonState();
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})
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.catch(() => new Flash('Error loading viewer'));
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}
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static loadViewer(viewerParam) {
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const viewer = viewerParam;
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const url = viewer.getAttribute('data-url');
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return new Promise((resolve, reject) => {
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if (!url || viewer.getAttribute('data-loaded') || viewer.getAttribute('data-loading')) {
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resolve(viewer);
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return;
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}
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viewer.setAttribute('data-loading', 'true');
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$.ajax({
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url,
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dataType: 'JSON',
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})
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.fail(reject)
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.done((data) => {
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viewer.innerHTML = data.html;
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viewer.setAttribute('data-loaded', 'true');
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resolve(viewer);
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});
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});
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}
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}
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