Edge Local File Enhancer

Enhance the experience of viewing local files on Edge.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Edge Local File Enhancer
// @namespace    http://tampermonkey.net/
// @version      0.1.5
// @description  Enhance the experience of viewing local files on Edge.
// @author       PRO
// @match        file:///*/
// @icon         data:image/png;base64,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
// @grant        none
// @run-at       document-end
// @license      gpl-3.0
// ==/UserScript==

(function() {
    'use strict';
    // Helper functions
    const path = location.href;
    if (!path.startsWith("file:///") || !path.endsWith("/")) return;
    const debug = false;
    const log = debug ? console.log.bind(console, "[ELFE]") : () => {};
    const $ = document.querySelector.bind(document);
    const $$ = document.querySelectorAll.bind(document);
    const getModifier = (e) => (e.ctrlKey << 2 | e.shiftKey << 1 | e.altKey);
    const hasModifier = (e, test = 0b111) => Boolean(getModifier(e) & test);
    const modifierDict = (e) => {
        return {
            "button": e.button || 0,
            "ctrlKey": e.ctrlKey,
            "shiftKey": e.shiftKey,
            "altKey": e.altKey,
            "bubble": false,
        }
    };

    // CSS
    const header = $("h1#header");
    const css = document.createElement("style");
    css.id = "elfe-css";
    css.textContent = `
        html { scroll-behavior: smooth; }
        h1#header > a { color: initial; text-decoration: none; transition: color 0.2s ease-in-out; }
        h1#header > a:hover { color: -webkit-link; }
        table { margin: 0.5rem 0; width: auto; }
        table td, table th { padding: 0.3rem 0.5rem; vertical-align: middle; }
        div#parentDirLinkBox { display: none !important; }
        #parentDir { padding: 0 0.5em 0; }
        thead th { border-left: 1px solid gray; border-right: 1px solid gray; }
        thead th, tbody tr { transition: background-color 0.2s ease-in-out; cursor: pointer; }
        thead th:hover, tbody tr:hover { background-color: #333333; }
        tbody tr.selected { background-color: #4d4d4d; }
    `;
    $("head").appendChild(css);

    // Navigation
    const delimeter = header.textContent.includes("\\") ? "\\" : "/";
    const split = header.textContent.split(delimeter);
    log(split);
    const parts = split.slice(0, -1);
    header.innerHTML = '<a href="../" id="parentDir">↑</a>'
        + parts.map((part, i) =>
            `<a href="${parts.slice(0, i + 1).join(delimeter)}${delimeter}">${part}</a>`
        ).join(delimeter) + delimeter + split.slice(-1)[0];

    // Table
    const rows = $$("tbody tr");
    rows.forEach(row => {
        row.addEventListener("click", e => {
            if (e.button != 0) return true;
            log(e);
            e.preventDefault();
            row.querySelector("a").dispatchEvent(new MouseEvent("click", modifierDict(e)));
            return true;
        });
    });
    $$("td").forEach(td => {
        td.title = td.getAttribute("data-value") || td.textContent;
    });

    // Shortcuts
    const parentDir = $("#parentDir");
    const count = rows.length;
    var selected = 0;
    function select(i) {
        rows[selected].classList.remove("selected");
        selected = i;
        rows[selected].classList.add("selected");
        rows[selected].scrollIntoView({ block: "center" });
    }
    function delta(d) {
        select((selected + d + count) % count);
    }
    document.addEventListener("keydown", e => {
        switch (e.key) {
            case "ArrowUp":
                e.preventDefault();
                if (e.altKey && parentDir) { // Go to parent directory
                    parentDir.click();
                    break;
                }
                if (e.ctrlKey) { // Scroll up
                    window.scrollBy({ top: -window.innerHeight / 2});
                    break;
                }
                if (count == 0) break;
                if (e.shiftKey) { // Select top
                    select(0);
                    break;
                }
                // Select previous
                delta(-1);
                break;
            case "ArrowDown":
                e.preventDefault();
                if (e.ctrlKey) { // Scroll down
                    window.scrollBy({ top: window.innerHeight / 2});
                    break;
                }
                if (count == 0) break;
                if (e.shiftKey) { // Select bottom
                    select(count - 1);
                    break;
                }
                // Select next
                delta(1);
                break;
            case "ArrowLeft":
                if (hasModifier(e)) break; // Try to be none-intrusive
                history.back(); break;
            case "ArrowRight":
                if (hasModifier(e)) break;
                history.forward(); break;
            case "Enter": {
                if (count == 0) break;
                e.preventDefault();
                const link = rows[selected].querySelector("a");
                link.dispatchEvent(new MouseEvent("click", modifierDict(e)));
                break;
            }
            default: break;
        }
    });
})();