Add function to clean copied links

#157

core_js/context_menu.js

@@ -0,0 +1,87 @@
+/*
+* ClearURLs
+* Copyright (c) 2017-2019 Kevin Röbert
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Lesser General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*jshint esversion: 6 */
+/*
+* This script is responsible for context menu cleaning functions.
+*/
+
+browser.contextMenus.create({
+    id: "copy-link-to-clipboard",
+    title: translate("clipboard.copy-link"),
+    contexts: ["link"],
+    icons: {
+        "16": "img/clearurls_16x16.png",
+        "19": "img/clearurls_19x19.png",
+        "20": "img/clearurls_20x20.png",
+        "24": "img/clearurls_24x24.png",
+        "30": "img/clearurls_30x30.png",
+        "32": "img/clearurls_32x32.png",
+        "38": "img/clearurls_38x38.png",
+        "48": "img/clearurls_48x48.png",
+        "64": "img/clearurls_64x64.png",
+        "96": "img/clearurls_96x96.png",
+        "128": "img/clearurls_128x128.png"
+    }
+});
+
+browser.contextMenus.onClicked.addListener((info, tab) => {
+    if (info.menuItemId === "copy-link-to-clipboard") {
+        const url = contextCleaning(info.linkUrl);
+        navigator.clipboard.writeText(url).then(() => {
+            console.log("[ClearURLs] Copied cleaned url to clipboard.");
+        });
+    }
+});
+
+/**
+* Cleans links for the context menue. Also do automatic redirection.
+*
+* @param  {[type]} url url as string
+* @return {Array}     redirectUrl or none
+*/
+function contextCleaning(url) {
+    // The URL is already cleaned
+    if(lastVisited === url) {
+        return url;
+    }
+
+    var cleanURL = url;
+
+    for (var i = 0; i < providers.length; i++) {
+        var result = {
+            "changes": false,
+            "url": "",
+            "redirect": false,
+            "cancel": false
+        };
+
+        if(providers[i].matchURL(cleanURL))
+        {
+            result = removeFieldsFormURL(providers[i], cleanURL);
+            cleanURL = result.url;
+        }
+
+        if(result.redirect)
+        {
+            return result.url;
+        }
+    }
+
+    return cleanURL;
+}