135 lines
4.1 KiB
JavaScript
135 lines
4.1 KiB
JavaScript
/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2022
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* @license Apache-2.0
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*/
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import {showSidePanel} from "./sidePanel.mjs";
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import Utils from "../../core/Utils.mjs";
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import {isImage} from "../../core/lib/FileType.mjs";
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/**
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* A File Details extension for CodeMirror
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*/
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class FileDetailsPanel {
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/**
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* FileDetailsPanel constructor
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* @param {Object} opts
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*/
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constructor(opts) {
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this.fileDetails = opts.fileDetails;
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this.progress = opts.progress;
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this.status = opts.status;
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this.buffer = opts.buffer;
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this.renderPreview = opts.renderPreview;
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this.dom = this.buildDOM();
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this.renderFileThumb();
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}
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/**
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* Builds the file details DOM tree
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* @returns {DOMNode}
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*/
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buildDOM() {
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const dom = document.createElement("div");
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dom.className = "cm-file-details";
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const fileThumb = require("../static/images/file-128x128.png");
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dom.innerHTML = `
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<p class="file-details-heading">File details</p>
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<img aria-hidden="true" src="${fileThumb}" alt="File icon" class="file-details-thumbnail"/>
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<table class="file-details-data">
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<tr>
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<td>Name:</td>
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<td class="file-details-name" title="${Utils.escapeHtml(this.fileDetails.name)}">
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${Utils.escapeHtml(this.fileDetails.name)}
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</td>
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</tr>
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<tr>
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<td>Size:</td>
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<td class="file-details-size" title="${Utils.escapeHtml(this.fileDetails.size)} bytes">
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${Utils.escapeHtml(this.fileDetails.size)} bytes
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</td>
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</tr>
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<tr>
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<td>Type:</td>
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<td class="file-details-type" title="${Utils.escapeHtml(this.fileDetails.type)}">
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${Utils.escapeHtml(this.fileDetails.type)}
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</td>
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</tr>
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<tr>
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<td>Loaded:</td>
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<td class="file-details-${this.status === "error" ? "error" : "loaded"}">
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${this.status === "error" ? "Error" : this.progress + "%"}
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</td>
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</tr>
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</table>
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`;
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return dom;
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}
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/**
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* Render the file thumbnail
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*/
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renderFileThumb() {
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if (!this.renderPreview) {
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this.resetFileThumb();
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return;
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}
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const fileThumb = this.dom.querySelector(".file-details-thumbnail");
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const fileType = this.dom.querySelector(".file-details-type");
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const fileBuffer = new Uint8Array(this.buffer);
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const type = isImage(fileBuffer);
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if (type && type !== "image/tiff" && fileBuffer.byteLength <= 512000) {
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// Most browsers don't support displaying TIFFs, so ignore them
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// Don't render images over 512,000 bytes
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const blob = new Blob([fileBuffer], {type: type}),
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url = URL.createObjectURL(blob);
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fileThumb.src = url;
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} else {
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this.resetFileThumb();
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}
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fileType.textContent = type;
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}
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/**
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* Reset the file thumbnail to the default icon
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*/
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resetFileThumb() {
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const fileThumb = this.dom.querySelector(".file-details-thumbnail");
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fileThumb.src = require("../static/images/file-128x128.png");
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}
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}
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/**
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* A panel constructor factory building a panel that displays file details
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* @param {Object} opts
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* @returns {Function<PanelConstructor>}
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*/
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function makePanel(opts) {
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const fdPanel = new FileDetailsPanel(opts);
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return (view) => {
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return {
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dom: fdPanel.dom,
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width: 200,
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update(update) {
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}
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};
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};
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}
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/**
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* A function that build the extension that enables the panel in an editor.
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* @param {Object} opts
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* @returns {Extension}
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*/
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export function fileDetailsPanel(opts) {
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const panelMaker = makePanel(opts);
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return showSidePanel.of(panelMaker);
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}
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