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import $ from 'jquery';
import '~/behaviors/markdown/render_gfm';
import { __ } from '~/locale';
import { fixTitle } from '~/tooltips';
import { deprecatedCreateFlash as Flash } from '../../flash';
import axios from '../../lib/utils/axios_utils';
import { handleLocationHash } from '../../lib/utils/common_utils';
import eventHub from '../../notes/event_hub';
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.$fileHolder[0].querySelector('.blob-viewer:not(.hidden)');
let initialViewerName = initialViewer.getAttribute('data-type');
if (this.switcher && window.location.hash.indexOf('#L') === 0) {
initialViewerName = 'simple';
}
this.switchToViewer(initialViewerName);
}
initBindings() {
if (this.switcherBtns.length) {
Array.from(this.switcherBtns).forEach((el) => {
el.addEventListener('click', this.switchViewHandler.bind(this));
});
}
if (this.copySourceBtn) {
this.copySourceBtn.addEventListener('click', () => {
if (this.copySourceBtn.classList.contains('disabled')) return this.copySourceBtn.blur();
return this.switchToViewer('simple');
});
}
}
switchViewHandler(e) {
const target = e.currentTarget;
e.preventDefault();
this.switchToViewer(target.getAttribute('data-viewer'));
}
toggleCopyButtonState() {
if (!this.copySourceBtn) return;
if (this.simpleViewer.getAttribute('data-loaded')) {
this.copySourceBtn.setAttribute('title', __('Copy file contents'));
this.copySourceBtn.classList.remove('disabled');
} else if (this.activeViewer === this.simpleViewer) {
this.copySourceBtn.setAttribute(
'title',
__('Wait for the file to load to copy its contents'),
);
this.copySourceBtn.classList.add('disabled');
} else {
this.copySourceBtn.setAttribute(
'title',
__('Switch to the source to copy the file contents'),
);
this.copySourceBtn.classList.add('disabled');
}
fixTitle($(this.copySourceBtn));
}
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.selected');
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('selected');
}
if (newButton) {
newButton.classList.add('selected');
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');
eventHub.$emit('showBlobInteractionZones', viewer.dataset.path);
return viewer;
});
}
}
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