Userscript version of "Google Translate This" from https://github.com/andreicristianpetcu/google_translate_this for Tampermonkey or Violentmonkey. v0.5 2019-11-06
// ==UserScript==
// @name Inject Google Translate Widget
// @description Userscript version of "Google Translate This" from https://github.com/andreicristianpetcu/google_translate_this for Tampermonkey or Violentmonkey. v0.5 2019-11-06
// @author Jefferson "jscher2000" Scher
// @namespace JeffersonScher
// @version 0.5
// @copyright Copyright 2019 Jefferson Scher. Mostly Copyright 2019 Andrei Cristian Petcu.
// @license GPL-3.0
// @match http*://*/*
// @grant GM_registerMenuCommand
// @grant GM_getValue
// @grant GM_setValue
// ==/UserScript==
var injectedStatus = false, hostarray = [];
function injectGoogleTranslateWidget(){
if (window.self !== window.top) return; // Not in frames
if (injectedStatus !== false) return; // Not if already injected
// From: https://github.com/andreicristianpetcu/google_translate_this/blob/master/scripts/inject_google_translate_content.js as of Sept. 8, 2019 (last line omitted)
var gtdiv = document.createElement("div");
gtdiv.setAttribute("id", "google_translate_element");
gtdiv.style.display="none";
document.body.appendChild(gtdiv);
var googleTranslateElementInitCode = "function(){ \
new google.translate.TranslateElement({pageLanguage: 'auto', autoDisplay: true}, 'google_translate_element'); \
setTimeout(function(){ \
var iframe = document.getElementsByClassName('goog-te-banner-frame')[0]; \
var iframeDocument = iframe.contentDocument || iframe.contentWindow.document; \
iframeDocument.getElementsByClassName('goog-te-button')[0].children[0].children[0].click(); \
}, 1000); \
}";
var globalFunctionScript = document.createElement('script');
globalFunctionScript.text = "googleTranslateElementInit = " + googleTranslateElementInitCode;
globalFunctionScript.type = "text/javascript";
document.getElementsByTagName('head')[0].appendChild(globalFunctionScript);
var bg_script = document.createElement('script');
bg_script.type = "text/javascript";
bg_script.src="https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit";
document.getElementsByTagName('head')[0].appendChild(bg_script);
injectedStatus = true; // not detecting whether it failed due to CSP
}
function addHost(){
hostarray.push(location.hostname);
GM_setValue("autoinjecthosts", JSON.stringify(hostarray));
if (injectedStatus == false) injectGoogleTranslateWidget;
}
function removeHost(){
var index = hostarray.indexOf(location.hostname);
if (index > -1){
hostarray.splice(index, 1);
GM_setValue("autoinjecthosts", JSON.stringify(hostarray));
}
}
// This should work in Violentmonkey and Tampermonkey, but unfortunately not Greasemonkey.
try {
hostarray = JSON.parse(GM_getValue("autoinjecthosts", "[]"));
if (hostarray.includes(location.hostname)){ // auto-inject
if (injectedStatus == false) window.setTimeout(injectGoogleTranslateWidget, 100);
GM_registerMenuCommand("Stop Auto-Injecting Widget", removeHost);
} else { // on-demand
GM_registerMenuCommand("Inject Google Translate Widget", injectGoogleTranslateWidget);
GM_registerMenuCommand("Auto-Inject on " + location.hostname, addHost);
}
} catch (err) {
console.log('Error adding Inject Google Translate Widget menu items: ' + err.message);
}