GM_Polyfill

Provide GM_functions in non-ScriptManager-environment

بۇ قوليازمىنى بىۋاسىتە قاچىلاشقا بولمايدۇ. بۇ باشقا قوليازمىلارنىڭ ئىشلىتىشى ئۈچۈن تەمىنلەنگەن ئامبار بولۇپ، ئىشلىتىش ئۈچۈن مېتا كۆرسەتمىسىگە قىستۇرىدىغان كود: // @require https://update.greasyfork.org/scripts/429613/975941/GM_Polyfill.js

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!)

/* 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;
}