/* eslint-disable no-multi-spaces */
// ==UserScript==
// @name         GM_Polyfill
// @namespace    GM_Polyfill
// @version      0.3
// @description  Provide GM_functions in non-ScriptManager-environment
// @author       PY-DNG
// @match        *
// @icon         data:image/png;base64,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
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_deleteValue
// @grant        GM_listValues
// @grant        GM_xmlhttpRequest
// @grant        GM_openInTab
// @grant        GM_setClipboard
// ==/UserScript==
// GM_Polyfill By PY-DNG
// 2021.07.18 - 2021.07.19
// Simply provides the following GM_functions using localStorage, XMLHttpRequest and window.open:
// Returns object GM_POLYFILLED which has the following properties that shows you which GM_functions are actually polyfilled:
// GM_setValue, GM_getValue, GM_deleteValue, GM_listValues, GM_xmlhttpRequest, GM_openInTab, GM_setClipboard, unsafeWindow(object)
// All polyfilled GM_functions are accessable in window object/Global_Scope(only without Tempermonkey Sandboxing environment)
function GM_PolyFill(name = 'default') {
const GM_POLYFILL_KEY_STORAGE = 'GM_STORAGE_POLYFILL';
let GM_POLYFILL_storage;
const GM_POLYFILLED = {
GM_setValue: true,
GM_getValue: true,
GM_deleteValue: true,
GM_listValues: true,
GM_xmlhttpRequest: true,
GM_openInTab: true,
GM_setClipboard: true,
unsafeWindow: true
}
// Ignore GM_PolyFill_Once
window.GM_POLYFILLED && window.GM_POLYFILLED.once && (window.unsafeWindow = window.GM_setClipboard = window.GM_openInTab = window.GM_xmlhttpRequest = window.GM_getValue = window.GM_setValue = window.GM_listValues = window.GM_deleteValue = undefined);
GM_setValue_polyfill();
GM_getValue_polyfill();
GM_deleteValue_polyfill();
GM_listValues_polyfill();
GM_xmlhttpRequest_polyfill();
GM_openInTab_polyfill();
GM_setClipboard_polyfill();
unsafeWindow_polyfill();
function GM_POLYFILL_getStorage() {
let gstorage = localStorage.getItem(GM_POLYFILL_KEY_STORAGE);
gstorage = gstorage ? JSON.parse(gstorage) : {};
let storage = gstorage[name] ? gstorage[name] : {};
return storage;
}
function GM_POLYFILL_saveStorage() {
let gstorage = localStorage.getItem(GM_POLYFILL_KEY_STORAGE);
gstorage = gstorage ? JSON.parse(gstorage) : {};
gstorage[name] = GM_POLYFILL_storage;
localStorage.setItem(GM_POLYFILL_KEY_STORAGE, JSON.stringify(gstorage));
}
// GM_setValue
function GM_setValue_polyfill() {
typeof (GM_setValue) === 'function' ? GM_POLYFILLED.GM_setValue = false: window.GM_setValue = PF_GM_setValue;;
function PF_GM_setValue(name, value) {
GM_POLYFILL_storage = GM_POLYFILL_getStorage();
name = String(name);
GM_POLYFILL_storage[name] = value;
GM_POLYFILL_saveStorage();
}
}
// GM_getValue
function GM_getValue_polyfill() {
typeof (GM_getValue) === 'function' ? GM_POLYFILLED.GM_getValue = false: window.GM_getValue = PF_GM_getValue;
function PF_GM_getValue(name, defaultValue) {
GM_POLYFILL_storage = GM_POLYFILL_getStorage();
name = String(name);
if (GM_POLYFILL_storage.hasOwnProperty(name)) {
return GM_POLYFILL_storage[name];
} else {
return defaultValue;
}
}
}
// GM_deleteValue
function GM_deleteValue_polyfill() {
typeof (GM_deleteValue) === 'function' ? GM_POLYFILLED.GM_deleteValue = false: window.GM_deleteValue = PF_GM_deleteValue;
function PF_GM_deleteValue(name) {
GM_POLYFILL_storage = GM_POLYFILL_getStorage();
name = String(name);
if (GM_POLYFILL_storage.hasOwnProperty(name)) {
delete GM_POLYFILL_storage[name];
GM_POLYFILL_saveStorage();
}
}
}
// GM_listValues
function GM_listValues_polyfill() {
typeof (GM_listValues) === 'function' ? GM_POLYFILLED.GM_listValues = false: window.GM_listValues = PF_GM_listValues;
function PF_GM_listValues() {
GM_POLYFILL_storage = GM_POLYFILL_getStorage();
return Object.keys(GM_POLYFILL_storage);
}
}
// unsafeWindow
function unsafeWindow_polyfill() {
typeof (unsafeWindow) === 'object' ? GM_POLYFILLED.unsafeWindow = false: window.unsafeWindow = window;
}
// GM_xmlhttpRequest
// not supported properties of details: synchronous binary nocache revalidate context fetch
// not supported properties of response(onload arguments[0]): finalUrl
// ---!IMPORTANT!--- DOES NOT SUPPORT CROSS-ORIGIN REQUESTS!!!!! ---!IMPORTANT!---
function GM_xmlhttpRequest_polyfill() {
typeof (GM_xmlhttpRequest) === 'function' ? GM_POLYFILLED.GM_xmlhttpRequest = false: window.GM_xmlhttpRequest = PF_GM_xmlhttpRequest;
// details.synchronous is not supported as Tempermonkey
function PF_GM_xmlhttpRequest(details) {
const xhr = new XMLHttpRequest();
// open request
const openArgs = [details.method, details.url, true];
if (details.user && details.password) {
openArgs.push(details.user);
openArgs.push(details.password);
}
xhr.open.apply(xhr, openArgs);
// set headers
if (details.headers) {
for (const key of Object.keys(details.headers)) {
xhr.setRequestHeader(key, details.headers[key]);
}
}
details.cookie ? xhr.setRequestHeader('cookie', details.cookie) : function () {};
details.anonymous ? xhr.setRequestHeader('cookie', '') : function () {};
// properties
xhr.timeout = details.timeout;
xhr.responseType = details.responseType;
details.overrideMimeType ? xhr.overrideMimeType(details.overrideMimeType) : function () {};
// events
xhr.onabort = details.onabort;
xhr.onerror = details.onerror;
xhr.onloadstart = details.onloadstart;
xhr.onprogress = details.onprogress;
xhr.onreadystatechange = details.onreadystatechange;
xhr.ontimeout = details.ontimeout;
xhr.onload = function (e) {
const response = {
readyState: xhr.readyState,
status: xhr.status,
statusText: xhr.statusText,
responseHeaders: xhr.getAllResponseHeaders(),
response: xhr.response
};
(details.responseType === '' || details.responseType === 'text') ? (response.responseText = xhr.responseText) : function () {};
(details.responseType === '' || details.responseType === 'document') ? (response.responseXML = xhr.responseXML) : function () {};
details.onload(response);
}
// send request
details.data ? xhr.send(details.data) : xhr.send();
return {
abort: xhr.abort
};
}
}
// NOTE: options(arg2) is NOT SUPPORTED! if provided, then will just be skipped.
function GM_openInTab_polyfill() {
typeof (GM_openInTab) === 'function' ? GM_POLYFILLED.GM_openInTab = false: window.GM_openInTab = PF_GM_openInTab;
function PF_GM_openInTab(url) {
window.open(url);
}
}
// NOTE: needs to be called in an event handler function, and info(arg2) is NOT SUPPORTED!
function GM_setClipboard_polyfill() {
typeof (GM_setClipboard) === 'function' ? GM_POLYFILLED.GM_setClipboard = false: window.GM_setClipboard = PF_GM_setClipboard;
function PF_GM_setClipboard(text) {
// Create a new textarea for copying
const newInput = document.createElement('textarea');
document.body.appendChild(newInput);
newInput.value = text;
newInput.select();
document.execCommand('copy');
document.body.removeChild(newInput);
}
}
return GM_POLYFILLED;
}