Simple Dark Theme style for any website which you can configure per-site
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// ==UserScript==
// @name Universal Dark Theme Maker
// @namespace uni_dark_theme
// @version 1.32
// @description Simple Dark Theme style for any website which you can configure per-site
// @supportURL https://github.com/Owyn/Universal_Dark_Theme/issues
// @homepage https://github.com/Owyn/Universal_Dark_Theme
// @icon https://images2.imgbox.com/b3/67/Aq5XazuW_o.png
// @author Owyn
// @match *://*/*
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_addElement
// @grant GM_registerMenuCommand
// @grant unsafeWindow
// @sandbox JavaScript
// @run-at document-start
// ==/UserScript==
(function() {
'use strict';
var el;
var css;
var cfg_color;
var cfg_bgclr;
var cfg_bgimg;
var cfg_bgtrans;
var cfg_visclr;
var cfg_excl;
var cfg_css;
var cfg_js;
var cfg_match_pseudo;
var cfg_active;
switch(localStorage.getItem('active'))
{
case "true": // back-compatibility
case "1":
cfg_active = true;
break;
default:
cfg_active = false;
break;
}
function load_settings()
{
cfg_excl = localStorage.getItem('excl') || "";
cfg_css = localStorage.getItem('css') || "";
cfg_js = localStorage.getItem('js') || "";
cfg_bgimg = (localStorage.getItem('bgimg') === '1');
cfg_bgtrans = (localStorage.getItem('bgtrans') === '1');
cfg_match_pseudo = (localStorage.getItem('match_pseudo') === '1');
if (typeof GM_getValue !== "undefined")
{
cfg_color = GM_getValue("Color", "#c0c0c0");
cfg_bgclr = GM_getValue("bgColor", "#2e2e2e");
cfg_visclr = GM_getValue("visitedColor", "#a4a4a4");
}
}
function activate(yes, prev_active)
{
if(prev_active && el){console.debug("Removing dark style..."); el.remove();}
if(yes)
{
make_css();
console.debug("adding dark style...");
el = GM_addElement(document.documentElement, 'style', {textContent: css});
console.debug(el);
if(cfg_js){eval(cfg_js);}
}
}
function toggleDT()
{
load_settings();
cfg_active = !cfg_active;
activate(cfg_active, !cfg_active);
if(!cfg_active)
{
localStorage.removeItem('active');
}
else
{
localStorage.setItem('active', "1");
}
}
function make_css()
{
let exclusions;
let exc_txt = ""
if(cfg_excl !== "")
{
exclusions = cfg_excl.split(",");
for (var i = 0, len = exclusions.length; i < len; i++)
{
exc_txt += ":not("+exclusions[i]+")";
}
}
let bgimg_txt = cfg_bgimg ? "-color" : "";
let match_pseudo = cfg_match_pseudo ? (",*"+exc_txt+"::before"+",*"+exc_txt+"::after") : "";
////////////// Main thing, the style!:
css = (cfg_excl !== "*" ?(cfg_bgtrans ?`
:root`+exc_txt+` {
color: `+cfg_color+` !important;
background`+bgimg_txt+`: `+cfg_bgclr+` !important;
border-color: `+cfg_color+` !important;
color-scheme: dark;
}
:root `:``)+`*`+exc_txt+match_pseudo+` {
color: `+(cfg_bgtrans ? `unset` : cfg_color)+` !important;
background`+bgimg_txt+`: `+(cfg_bgtrans ? `unset` : cfg_bgclr)+` !important;
border-color: `+cfg_color+` !important;
color-scheme: dark;
}
:visited`+exc_txt+`, a:hover`+exc_txt+` {
color: `+cfg_visclr+` !important;
}
input:focus`+exc_txt+`,textarea:focus`+exc_txt+`,select:focus`+exc_txt+`{
outline: 1px solid `+cfg_visclr+` !important;
}
`:"")+cfg_css;
//////////////
}
if(cfg_active)
{
console.debug("Adding dark style...");
load_settings();
make_css();
el = GM_addElement(document.documentElement, 'style', {textContent: css});
console.debug(unsafeWindow);
console.debug(el);
window.addEventListener("DOMContentLoaded", function(){
if (document.documentElement.firstElementChild === el) // very fast browser
{
while (document.documentElement.lastElementChild !== el)
{
document.documentElement.prepend(document.documentElement.lastElementChild);
}
console.debug("moved dark style to the bottom"); // actually not, cuz security restrictions
}
if (cfg_js)
{
eval(cfg_js); // execute custom JS when the page fully loads
}
});
}
if (typeof GM_registerMenuCommand !== "undefined")
{
GM_registerMenuCommand("Dark Theme Configuration", ((typeof GM_addElement !== "undefined") ? cfg : tell_users_they_are_wrong), "D");
GM_registerMenuCommand("Toggle Dark Theme", ((typeof GM_addElement !== "undefined") ? toggleDT : tell_users_they_are_wrong), "T");
}
else
{
tell_users_they_are_wrong();
}
function tell_users_they_are_wrong()
{
let txt = "Sorry, your userscript manager is missing functionality needed for Universal Dark Theme script to work! Install TamperMonkey userscript-manager extension (the №1 most popular userscript-manager extension - how did you miss it?...)"
console.error(txt);
alert(txt);
}
var t;
function cfg()
{
function saveCfg()
{
GM_setValue("Color", document.getElementById("color").value);
GM_setValue("bgColor", document.getElementById("bgclr").value);
GM_setValue("visitedColor", document.getElementById("visitedColor").value);
localStorage.setItem('excl', document.getElementById("excl").value);
localStorage.setItem('css', document.getElementById("css").value);
localStorage.setItem('js', document.getElementById("js").value);
localStorage.setItem('active', document.getElementById("active").checked ? "1" : "0");
localStorage.setItem('match_pseudo', document.getElementById("match_pseudo").checked ? "1" : "0");
localStorage.setItem('bgimg', document.getElementById("bgimg").checked ? "1" : "0");
localStorage.setItem('bgtrans', document.getElementById("bgtrans").checked ? "1" : "0");
// pretty text "saved"
document.getElementById("cfg_save").value = "SAVED !";
clearTimeout(t);
t = setTimeout(function() {document.getElementById("cfg_save").value = "Save configuration";},1500)
// update active configuration
cfg_color = document.getElementById("color").value;
cfg_bgclr = document.getElementById("bgclr").value;
cfg_bgimg = document.getElementById("bgimg").checked;
cfg_bgtrans = document.getElementById("bgtrans").checked;
cfg_match_pseudo = document.getElementById("match_pseudo").checked;
cfg_visclr = document.getElementById("visitedColor").value;
cfg_excl = document.getElementById("excl").value;
cfg_css = document.getElementById("css").value;
cfg_js = document.getElementById("js").value;
activate(document.getElementById("active").checked, cfg_active );
cfg_active = document.getElementById("active").checked;
// clean up
if(!document.getElementById("active").checked) { localStorage.removeItem('active'); }
if(!document.getElementById("match_pseudo").checked) { localStorage.removeItem('match_pseudo'); }
if(!document.getElementById("bgimg").checked) { localStorage.removeItem('bgimg'); }
if(!document.getElementById("bgtrans").checked) { localStorage.removeItem('bgtrans'); }
if(!document.getElementById("excl").value) { localStorage.removeItem('excl'); }
if(!document.getElementById("css").value) { localStorage.removeItem('css'); }
if(!document.getElementById("js").value) { localStorage.removeItem('js'); }
}
load_settings();
var div = document.createElement("div");
div.style = "all:revert; margin: auto !important; width: fit-content !important; height: fit-content !important; border: 1px solid black; color: "+cfg_color+"; !important; background: "+cfg_bgclr+" !important; position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 2147483647; line-height: 1 !important;";
div.innerHTML = "<b><br><center>Configuration</center></b>"
+ "<div style='margin: auto; display: table;'>"
+ "<br><input id='color' type='text' size='7' style='all:revert; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important; padding:initial !important; margin:2px !important;'> Text color (empty = site default)"
+ "<br><input id='bgclr' type='text' size='7' style='all:revert; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important; padding:initial !important; margin:2px !important;'> Background color"
+ "<br><input id='visitedColor' type='text' size='7' style='all:revert; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important; padding:initial !important; margin:2px !important;'> <a href='' onclick='return false;'>Visited & hovered links color</a>"
+ "<br><br></div><center><b>Per-site settings (stored in browser cookies called LocalStorage):</b>"
+ "<table style='all:revert;'><tr style='all:revert; padding:1px !important;'><td style='all:revert; padding:1px !important;'><input id='active' type='checkbox' style='all:revert; margin:initial !important;'> Enabled for this website"
+ "</td><td style='all:revert; padding:1px !important;'><input id='match_pseudo' type='checkbox' style='all:revert; margin:initial !important;'> Also color pseudo-elements"
+ "</td></tr><br><br><tr style='all:revert; padding:1px !important;'><td style='all:revert; padding:1px !important;'><input id='bgimg' type='checkbox' style='all:revert; margin:initial !important;'> Keep background-images"
+ "</td><td style='all:revert; padding:1px !important;'><input id='bgtrans' type='checkbox' style='all:revert; margin:initial !important;'> Make background transparent </td></tr></table>"
+ "<br>Excluded css elements (e.g. \"#id1,.class2,input\"):<br><textarea id='excl' style='all:revert; margin: 0px; width: 400px; height: 50px; resize:both !important; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important; padding:initial !important;'></textarea>"
+ "<br><br>Custom CSS style:<br><textarea id='css' style='all:revert; margin: 0px; width: 400px; height: 50px; resize:both !important; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important; padding:initial !important;'></textarea>"
+ "<br><br>Custom JS Action:<br><textarea id='js' style='all:revert; margin: 0px; width: 400px; height: 50px; resize:both !important; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important; padding:initial !important;'></textarea>"
+ "<br><input id='cfg_save' type='button' value='Save configuration' style='all:revert; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important;'> <input id='cfg_close' type='button' value='Close' style='all:revert; color: "+cfg_color+" !important; background-color: "+cfg_bgclr+" !important; padding:initial !important;'></center>";
document.body.appendChild(div);
document.getElementById("color").value = cfg_color;
document.getElementById("bgclr").value = cfg_bgclr;
document.getElementById("bgimg").checked = cfg_bgimg;
document.getElementById("bgtrans").checked = cfg_bgtrans;
document.getElementById("visitedColor").value = cfg_visclr;
//
document.getElementById("active").checked = cfg_active;
document.getElementById("match_pseudo").checked = cfg_match_pseudo;
document.getElementById("excl").value = cfg_excl;
document.getElementById("css").value = cfg_css;
document.getElementById("js").value = cfg_js;
document.getElementById("cfg_save").addEventListener("click", saveCfg, true);
document.getElementById("cfg_close").addEventListener("click", function(){div.remove();clearTimeout(t);}, true);
}
})();