Enabled user js for firefox + global keybindings manager

12 files changed, 1489 insertions, 56 deletions

diff --git a/modules/firefox.home/autoconfig.js b/modules/firefox.home/autoconfig.js
new file mode 100644
index 0000000..cc74675
--- /dev/null
+++ b/modules/firefox.home/autoconfig.js
@@ -0,0 +1,24 @@
+// Autoconfig
+
+pref('general.config.sandbox_enabled', false);
+pref('general.config.obscure_value', 0);
+lockPref('xpinstall.signatures.required', false);
+lockPref('extensions.install_origins.enabled', false);
+lockPref("extensions.experiments.enabled", true);
+
+// Setup user chrome support
+try {
+  const cmanifest = Services.dirsvc.get('UChrm', Ci.nsIFile);
+  cmanifest.append('utils');
+  cmanifest.append('chrome.manifest');
+  Components.manager.QueryInterface(Ci.nsIComponentRegistrar).autoRegister(cmanifest);
+} catch (ex) { };
+
+try {
+  Services.scriptloader.loadSubScript('chrome://userchromejs/content/BootstrapLoader.js');
+} catch (ex) { };
+
+try {
+  ChromeUtils.import('chrome://userchromejs/content/userChrome.jsm');
+} catch (ex) { };
+
diff --git a/modules/firefox.home/chrome/globalKeybindings.uc.js b/modules/firefox.home/chrome/globalKeybindings.uc.js
new file mode 100644
index 0000000..95d8a10
--- /dev/null
+++ b/modules/firefox.home/chrome/globalKeybindings.uc.js
@@ -0,0 +1,102 @@
+// ==UserScript==
+// @name                 Global Keybindings
+// @version              1.0
+// @description          Setup global keybindings on all windows
+// @startup              UC.globalKeybindings.init(win);
+// @shutdown             UC.globalKeybindings.destroy();
+// ==/UserScript==
+
+
+(() => {
+  // Configure global keybindings
+  const KEYBINDINGS = () => ({
+    RELEASE: [
+      [ctrl(key('j')), nextTab()],
+      [ctrl(key('k')), prevTab()],
+      [alt(key('j')), moveSelectedTabBy(+1)],
+      [alt(key('k')), moveSelectedTabBy(-1)],
+      [ctrl(shift(key('J'))), moveSelectedTabBy(+1)],
+      [ctrl(shift(key('K'))), moveSelectedTabBy(-1)],
+
+      ...(Array.from({ length: 10 }, (_, idx) =>
+        [ctrl(key(idx === 9 ? 0 : idx + 1)), tabIndex(idx)],
+      )),
+    ],
+    PRESS: [
+      // Prevent the default browser's action
+      [ctrl(shift(key('J'))), preventDefault()],
+      [ctrl(shift(key('K'))), preventDefault()],
+    ],
+  });
+
+  const nextTab = () => () => updateTabIndex((n, len) => (n + 1) % len);
+  const prevTab = () => () => updateTabIndex((n, len) => n === 0 ? len - 1 : n - 1);
+  const tabIndex = idx => () => updateTabIndex((_n, _len) => idx)
+  const preventDefault = f => e => { e.preventDefault(); f?.(e); };
+  const moveSelectedTabBy = incr => () => updateSelectedTabIndex(incr);
+
+  const ctrl = b => e => b(e) && e.ctrlKey;
+  const alt = b => e => b(e) && e.altKey;
+  const shift = b => e => b(e) && e.shiftKey;
+  const key = key => e => `${e.key}` === `${key}`;
+
+  const updateTabIndex = (f) => {
+    const newIndex = f(gBrowser.tabContainer.selectedIndex, gBrowser.tabs.length)
+    if (typeof newIndex !== 'number') return;
+    if (newIndex >= gBrowser.tabContainer.allTabs.length) return;
+    if (newIndex < 0) return;
+    gBrowser.selectTabAtIndex(newIndex);
+  };
+
+  const updateSelectedTabIndex = (incr) => {
+    if (typeof incr !== 'number') return;
+    if (incr === +1) return gBrowser.moveTabForward();
+    if (incr === -1) return gBrowser.moveTabBackward();
+    const newIndex = gBrowser.tabContainer.selectedIndex + incr;
+    if (newIndex >= gBrowser.tabContainer.allTabs.length) return;
+    if (newIndex < 0) return;
+    gBrowser.moveTabTo(gBrowser.selectedTab, newIndex)
+  };
+
+  const module = {
+    enabled: true,
+
+    evaluateKeybindings: (bindings, e) => {
+      if (!module.enabled) return;
+
+      for (const [isKey, action] of bindings) {
+        if (isKey(e)) {
+          const shouldContinue = action(e);
+          if (!shouldContinue) break;
+        }
+      }
+    },
+
+    handleKeyUpEvent: e => module.evaluateKeybindings(KEYBINDINGS().RELEASE, e),
+    handleKeyDownEvent: e => module.evaluateKeybindings(KEYBINDINGS().PRESS, e),
+
+    init(win) {
+      let observe = () => {
+        Services.obs.removeObserver(observe, 'browser-window-before-show');
+        win.addEventListener('keyup', module.handleKeyUpEvent, true);
+        win.addEventListener('keydown', module.handleKeyDownEvent, true);
+      }
+
+      if (win.__SSi) {
+        win.addEventListener('keyup', module.handleKeyUpEvent, true);
+        win.addEventListener('keydown', module.handleKeyDownEvent, true);
+      } else {
+        Services.obs.addObserver(observe, 'browser-window-before-show');
+      }
+    },
+    destroy() {
+      _uc.windows((_doc, win) => {
+        win.removeEventListener('keyup', module.handleKeyUpEvent, true);
+        win.removeEventListener('keydown', module.handleKeyDownEvent, true);
+      });
+      delete UC.globalKeybindings;
+    },
+  };
+
+  UC.globalKeybindings = module;
+})();
diff --git a/modules/firefox.home/chrome/setupNewTab.uc.js b/modules/firefox.home/chrome/setupNewTab.uc.js
new file mode 100644
index 0000000..1eb971c
--- /dev/null
+++ b/modules/firefox.home/chrome/setupNewTab.uc.js
@@ -0,0 +1,20 @@
+// ==UserScript==
+// @name                 Custom New Tab
+// @version              1.0
+// @description          Load a custom link or local file, instead of the default new tab page (about:newtab).
+// ==/UserScript==
+
+// For Firefox 72 onward, see the autoconfig alternative to this:
+// https://support.mozilla.org/questions/1251199#answer-1199709
+
+globalThis.newtabLinkStarted = true;
+
+if (!AboutNewTab) {
+  globalThis.AboutNewTab = ChromeUtils.import('resource:///modules/AboutNewTab.jsm').AboutNewTab;
+}
+
+const newTabUrl = xPref.get('browser.newtab.url') || 'about:blank';
+
+AboutNewTab.newTabURL = newTabUrl;
+
+console.log('Updated new tab url to', newTabUrl);
diff --git a/modules/firefox.home/userChrome.css b/modules/firefox.home/chrome/userChrome.css
index 67809b0..67809b0 100644
--- a/modules/firefox.home/userChrome.css
+++ b/modules/firefox.home/chrome/userChrome.css
diff --git a/modules/firefox.home/chrome/utils/BootstrapLoader.js b/modules/firefox.home/chrome/utils/BootstrapLoader.js
new file mode 100644
index 0000000..eddc1de
--- /dev/null
+++ b/modules/firefox.home/chrome/utils/BootstrapLoader.js
@@ -0,0 +1,419 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+'use strict';
+
+ChromeUtils.defineESModuleGetters(this, {
+  Blocklist: 'resource://gre/modules/Blocklist.sys.mjs',
+  ConsoleAPI: 'resource://gre/modules/Console.sys.mjs',
+  InstallRDF: 'chrome://userchromejs/content/RDFManifestConverter.sys.mjs',
+});
+
+Services.obs.addObserver(doc => {
+  if (doc.location.protocol + doc.location.pathname === 'about:addons' ||
+      doc.location.protocol + doc.location.pathname === 'chrome:/content/extensions/aboutaddons.html') {
+    const win = doc.defaultView;
+    let handleEvent_orig = win.customElements.get('addon-card').prototype.handleEvent;
+    win.customElements.get('addon-card').prototype.handleEvent = function (e) {
+      if (e.type === 'click' &&
+          e.target.getAttribute('action') === 'preferences' &&
+          this.addon.__AddonInternal__.optionsType == 1/*AddonManager.OPTIONS_TYPE_DIALOG*/) {
+        var windows = Services.wm.getEnumerator(null);
+        while (windows.hasMoreElements()) {
+          var win2 = windows.getNext();
+          if (win2.closed) {
+            continue;
+          }
+          if (win2.document.documentURI == this.addon.optionsURL) {
+            win2.focus();
+            return;
+          }
+        }
+        var features = 'chrome,titlebar,toolbar,centerscreen';
+        win.docShell.rootTreeItem.domWindow.openDialog(this.addon.optionsURL, this.addon.id, features);
+      } else {
+        handleEvent_orig.apply(this, arguments);
+      }
+    }
+    let update_orig = win.customElements.get('addon-options').prototype.update;
+    win.customElements.get('addon-options').prototype.update = function (card, addon) {
+      update_orig.apply(this, arguments);
+      if (addon.__AddonInternal__.optionsType == 1/*AddonManager.OPTIONS_TYPE_DIALOG*/)
+        this.querySelector('panel-item[data-l10n-id="preferences-addon-button"]').hidden = false;
+    }
+  }
+}, 'chrome-document-loaded');
+
+const { AddonManager } = ChromeUtils.importESModule('resource://gre/modules/AddonManager.sys.mjs');
+const { XPIDatabase, AddonInternal } = ChromeUtils.importESModule('resource://gre/modules/addons/XPIDatabase.sys.mjs');
+const { XPIExports } = ChromeUtils.importESModule('resource://gre/modules/addons/XPIExports.sys.mjs');
+
+var orig_verifyBundleSignedState = XPIExports.verifyBundleSignedState;
+XPIExports.verifyBundleSignedState = async (aBundle, aAddon) => {
+  if(!aAddon.isWebExtension && aAddon.type === "extension") return { signedState: undefined, signedTypes: [] };
+  return orig_verifyBundleSignedState(aBundle, aAddon);
+}
+
+XPIDatabase.isDisabledLegacy = () => false;
+
+ChromeUtils.defineLazyGetter(this, 'BOOTSTRAP_REASONS', () => {
+  const { XPIProvider } = ChromeUtils.importESModule('resource://gre/modules/addons/XPIProvider.sys.mjs');
+  return XPIProvider.BOOTSTRAP_REASONS;
+});
+
+const { Log } = ChromeUtils.importESModule('resource://gre/modules/Log.sys.mjs');
+var logger = Log.repository.getLogger('addons.bootstrap');
+
+/**
+ * Valid IDs fit this pattern.
+ */
+var gIDTest = /^(\{[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\}|[a-z0-9-\._]*\@[a-z0-9-\._]+)$/i;
+
+// Properties that exist in the install manifest
+const PROP_METADATA      = ['id', 'version', 'type', 'internalName', 'updateURL',
+                            'optionsURL', 'optionsType', 'aboutURL', 'iconURL'];
+const PROP_LOCALE_SINGLE = ['name', 'description', 'creator', 'homepageURL'];
+const PROP_LOCALE_MULTI  = ['developers', 'translators', 'contributors'];
+
+// Map new string type identifiers to old style nsIUpdateItem types.
+// Retired values:
+// 32 = multipackage xpi file
+// 8 = locale
+// 256 = apiextension
+// 128 = experiment
+// theme = 4
+const TYPES = {
+  extension: 2,
+  dictionary: 64,
+};
+
+const COMPATIBLE_BY_DEFAULT_TYPES = {
+  extension: true,
+  dictionary: true,
+};
+
+const hasOwnProperty = Function.call.bind(Object.prototype.hasOwnProperty);
+
+function isXPI(filename) {
+  let ext = filename.slice(-4).toLowerCase();
+  return ext === '.xpi' || ext === '.zip';
+}
+
+/**
+ * Gets an nsIURI for a file within another file, either a directory or an XPI
+ * file. If aFile is a directory then this will return a file: URI, if it is an
+ * XPI file then it will return a jar: URI.
+ *
+ * @param {nsIFile} aFile
+ *        The file containing the resources, must be either a directory or an
+ *        XPI file
+ * @param {string} aPath
+ *        The path to find the resource at, '/' separated. If aPath is empty
+ *        then the uri to the root of the contained files will be returned
+ * @returns {nsIURI}
+ *        An nsIURI pointing at the resource
+ */
+function getURIForResourceInFile(aFile, aPath) {
+  if (!isXPI(aFile.leafName)) {
+    let resource = aFile.clone();
+    if (aPath)
+      aPath.split('/').forEach(part => resource.append(part));
+
+    return Services.io.newFileURI(resource);
+  }
+
+  return buildJarURI(aFile, aPath);
+}
+
+/**
+ * Creates a jar: URI for a file inside a ZIP file.
+ *
+ * @param {nsIFile} aJarfile
+ *        The ZIP file as an nsIFile
+ * @param {string} aPath
+ *        The path inside the ZIP file
+ * @returns {nsIURI}
+ *        An nsIURI for the file
+ */
+function buildJarURI(aJarfile, aPath) {
+  let uri = Services.io.newFileURI(aJarfile);
+  uri = 'jar:' + uri.spec + '!/' + aPath;
+  return Services.io.newURI(uri);
+}
+
+var BootstrapLoader = {
+  name: 'bootstrap',
+  manifestFile: 'install.rdf',
+  async loadManifest(pkg) {
+    /**
+     * Reads locale properties from either the main install manifest root or
+     * an em:localized section in the install manifest.
+     *
+     * @param {Object} aSource
+     *        The resource to read the properties from.
+     * @param {boolean} isDefault
+     *        True if the locale is to be read from the main install manifest
+     *        root
+     * @param {string[]} aSeenLocales
+     *        An array of locale names already seen for this install manifest.
+     *        Any locale names seen as a part of this function will be added to
+     *        this array
+     * @returns {Object}
+     *        an object containing the locale properties
+     */
+    function readLocale(aSource, isDefault, aSeenLocales) {
+      let locale = {};
+      if (!isDefault) {
+        locale.locales = [];
+        for (let localeName of aSource.locales || []) {
+          if (!localeName) {
+            logger.warn('Ignoring empty locale in localized properties');
+            continue;
+          }
+          if (aSeenLocales.includes(localeName)) {
+            logger.warn('Ignoring duplicate locale in localized properties');
+            continue;
+          }
+          aSeenLocales.push(localeName);
+          locale.locales.push(localeName);
+        }
+
+        if (locale.locales.length == 0) {
+          logger.warn('Ignoring localized properties with no listed locales');
+          return null;
+        }
+      }
+
+      for (let prop of [...PROP_LOCALE_SINGLE, ...PROP_LOCALE_MULTI]) {
+        if (hasOwnProperty(aSource, prop)) {
+          locale[prop] = aSource[prop];
+        }
+      }
+
+      return locale;
+    }
+
+    let manifestData = await pkg.readString('install.rdf');
+    let manifest = InstallRDF.loadFromString(manifestData).decode();
+
+    let addon = new AddonInternal();
+    for (let prop of PROP_METADATA) {
+      if (hasOwnProperty(manifest, prop)) {
+        addon[prop] = manifest[prop];
+      }
+    }
+
+    if (!addon.type) {
+      addon.type = 'extension';
+    } else {
+      let type = addon.type;
+      addon.type = null;
+      for (let name in TYPES) {
+        if (TYPES[name] == type) {
+          addon.type = name;
+          break;
+        }
+      }
+    }
+
+    if (!(addon.type in TYPES))
+      throw new Error('Install manifest specifies unknown type: ' + addon.type);
+
+    if (!addon.id)
+      throw new Error('No ID in install manifest');
+    if (!gIDTest.test(addon.id))
+      throw new Error('Illegal add-on ID ' + addon.id);
+    if (!addon.version)
+      throw new Error('No version in install manifest');
+
+    addon.strictCompatibility = (!(addon.type in COMPATIBLE_BY_DEFAULT_TYPES) ||
+                                 manifest.strictCompatibility == 'true');
+
+    // Only read these properties for extensions.
+    if (addon.type == 'extension') {
+      if (manifest.bootstrap != 'true') {
+        throw new Error('Non-restartless extensions no longer supported');
+      }
+
+      if (addon.optionsType &&
+          addon.optionsType != 1/*AddonManager.OPTIONS_TYPE_DIALOG*/ &&
+          addon.optionsType != AddonManager.OPTIONS_TYPE_INLINE_BROWSER &&
+          addon.optionsType != AddonManager.OPTIONS_TYPE_TAB) {
+            throw new Error('Install manifest specifies unknown optionsType: ' + addon.optionsType);
+      }
+
+      if (addon.optionsType)
+        addon.optionsType = parseInt(addon.optionsType);
+    }
+
+    addon.defaultLocale = readLocale(manifest, true);
+
+    let seenLocales = [];
+    addon.locales = [];
+    for (let localeData of manifest.localized || []) {
+      let locale = readLocale(localeData, false, seenLocales);
+      if (locale)
+        addon.locales.push(locale);
+    }
+
+    let dependencies = new Set(manifest.dependencies);
+    addon.dependencies = Object.freeze(Array.from(dependencies));
+
+    let seenApplications = [];
+    addon.targetApplications = [];
+    for (let targetApp of manifest.targetApplications || []) {
+      if (!targetApp.id || !targetApp.minVersion ||
+          !targetApp.maxVersion) {
+            logger.warn('Ignoring invalid targetApplication entry in install manifest');
+            continue;
+      }
+      if (seenApplications.includes(targetApp.id)) {
+        logger.warn('Ignoring duplicate targetApplication entry for ' + targetApp.id +
+                    ' in install manifest');
+        continue;
+      }
+      seenApplications.push(targetApp.id);
+      addon.targetApplications.push(targetApp);
+    }
+
+    // Note that we don't need to check for duplicate targetPlatform entries since
+    // the RDF service coalesces them for us.
+    addon.targetPlatforms = [];
+    for (let targetPlatform of manifest.targetPlatforms || []) {
+      let platform = {
+        os: null,
+        abi: null,
+      };
+
+      let pos = targetPlatform.indexOf('_');
+      if (pos != -1) {
+        platform.os = targetPlatform.substring(0, pos);
+        platform.abi = targetPlatform.substring(pos + 1);
+      } else {
+        platform.os = targetPlatform;
+      }
+
+      addon.targetPlatforms.push(platform);
+    }
+
+    addon.userDisabled = false;
+    addon.softDisabled = addon.blocklistState == Blocklist.STATE_SOFTBLOCKED;
+    addon.applyBackgroundUpdates = AddonManager.AUTOUPDATE_DEFAULT;
+
+    addon.userPermissions = null;
+
+    addon.icons = {};
+    if (await pkg.hasResource('icon.png')) {
+      addon.icons[32] = 'icon.png';
+      addon.icons[48] = 'icon.png';
+    }
+
+    if (await pkg.hasResource('icon64.png')) {
+      addon.icons[64] = 'icon64.png';
+    }
+
+    Object.defineProperty(addon, 'appDisabled', {
+      set: _ => {},
+      get: _ => false
+    });
+
+    Object.defineProperty(addon, 'signedState', {
+      set: _ => {},
+      get: _ => AddonManager.SIGNEDSTATE_NOT_REQUIRED
+    });
+
+    return addon;
+  },
+
+  loadScope(addon) {
+    let file = addon.file || addon._sourceBundle;
+    let uri = getURIForResourceInFile(file, 'bootstrap.js').spec;
+    let principal = Services.scriptSecurityManager.getSystemPrincipal();
+
+    let sandbox = new Cu.Sandbox(principal, {
+      sandboxName: uri,
+      addonId: addon.id,
+      wantGlobalProperties: ['ChromeUtils'],
+      metadata: { addonID: addon.id, URI: uri },
+    });
+
+    try {
+      Object.assign(sandbox, BOOTSTRAP_REASONS);
+
+      ChromeUtils.defineLazyGetter(sandbox, 'console', () =>
+        new ConsoleAPI({ consoleID: `addon/${addon.id}` }));
+
+      Services.scriptloader.loadSubScript(uri, sandbox);
+    } catch (e) {
+      logger.warn(`Error loading bootstrap.js for ${addon.id}`, e);
+    }
+
+    function findMethod(name) {
+      if (sandbox[name]) {
+        return sandbox[name];
+      }
+
+      try {
+        let method = Cu.evalInSandbox(name, sandbox);
+        return method;
+      } catch (err) { }
+
+      return () => {
+        logger.warn(`Add-on ${addon.id} is missing bootstrap method ${name}`);
+      };
+    }
+
+    let install = findMethod('install');
+    let uninstall = findMethod('uninstall');
+    let startup = findMethod('startup');
+    let shutdown = findMethod('shutdown');
+
+    return {
+      install(...args) {
+        install(...args);
+        // Forget any cached files we might've had from this extension.
+        Services.obs.notifyObservers(null, 'startupcache-invalidate');
+      },
+
+      uninstall(...args) {
+        uninstall(...args);
+        // Forget any cached files we might've had from this extension.
+        Services.obs.notifyObservers(null, 'startupcache-invalidate');
+      },
+
+      startup(...args) {
+        if (addon.type == 'extension') {
+          logger.debug(`Registering manifest for ${file.path}\n`);
+          Components.manager.addBootstrappedManifestLocation(file);
+        }
+        return startup(...args);
+      },
+
+      shutdown(data, reason) {
+        try {
+          return shutdown(data, reason);
+        } catch (err) {
+          throw err;
+        } finally {
+          if (reason != BOOTSTRAP_REASONS.APP_SHUTDOWN) {
+            logger.debug(`Removing manifest for ${file.path}\n`);
+            Components.manager.removeBootstrappedManifestLocation(file);
+          }
+        }
+      },
+    };
+  },
+};
+
+AddonManager.addExternalExtensionLoader(BootstrapLoader);
+
+if (AddonManager.isReady) {
+  AddonManager.getAllAddons().then(addons => {
+    addons.forEach(addon => {
+      if (addon.type == 'extension' && !addon.isWebExtension && !addon.userDisabled) {
+        addon.reload();
+      };
+    });
+  });
+}
\ No newline at end of file
diff --git a/modules/firefox.home/chrome/utils/RDFDataSource.sys.mjs b/modules/firefox.home/chrome/utils/RDFDataSource.sys.mjs
new file mode 100644
index 0000000..c6380c1
--- /dev/null
+++ b/modules/firefox.home/chrome/utils/RDFDataSource.sys.mjs
@@ -0,0 +1,434 @@
+ /* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * This module creates a new API for accessing and modifying RDF graphs. The
+ * goal is to be able to serialise the graph in a human readable form. Also
+ * if the graph was originally loaded from an RDF/XML the serialisation should
+ * closely match the original with any new data closely following the existing
+ * layout. The output should always be compatible with Mozilla's RDF parser.
+ *
+ * This is all achieved by using a DOM Document to hold the current state of the
+ * graph in XML form. This can be initially loaded and parsed from disk or
+ * a blank document used for an empty graph. As assertions are added to the
+ * graph, appropriate DOM nodes are added to the document to represent them
+ * along with any necessary whitespace to properly layout the XML.
+ *
+ * In general the order of adding assertions to the graph will impact the form
+ * the serialisation takes. If a resource is first added as the object of an
+ * assertion then it will eventually be serialised inside the assertion's
+ * property element. If a resource is first added as the subject of an assertion
+ * then it will be serialised at the top level of the XML.
+ */
+
+const NS_XML = "http://www.w3.org/XML/1998/namespace";
+const NS_XMLNS = "http://www.w3.org/2000/xmlns/";
+const NS_RDF = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+const NS_NC = "http://home.netscape.com/NC-rdf#";
+
+/* eslint prefer-template: 1 */
+
+function isElement(obj) {
+  return Element.isInstance(obj);
+}
+function isText(obj) {
+  return obj && typeof obj == "object" && ChromeUtils.getClassName(obj) == "Text";
+}
+
+/**
+ * Returns either an rdf namespaced attribute or an un-namespaced attribute
+ * value. Returns null if neither exists,
+ */
+function getRDFAttribute(element, name) {
+  if (element.hasAttributeNS(NS_RDF, name))
+    return element.getAttributeNS(NS_RDF, name);
+  if (element.hasAttribute(name))
+    return element.getAttribute(name);
+  return undefined;
+}
+
+/**
+ * Represents an assertion in the datasource
+ */
+class RDFAssertion {
+  constructor(subject, predicate, object) {
+    // The subject on this assertion, an RDFSubject
+    this._subject = subject;
+    // The predicate, a string
+    this._predicate = predicate;
+    // The object, an RDFNode
+    this._object = object;
+    // The datasource this assertion exists in
+    this._ds = this._subject._ds;
+    // Marks that _DOMnode is the subject's element
+    this._isSubjectElement = false;
+    // The DOM node that represents this assertion. Could be a property element,
+    // a property attribute or the subject's element for rdf:type
+    this._DOMNode = null;
+  }
+
+  getPredicate() {
+    return this._predicate;
+  }
+
+  getObject() {
+    return this._object;
+  }
+}
+
+class RDFNode {
+  equals(rdfnode) {
+    return (rdfnode.constructor === this.constructor &&
+            rdfnode._value == this._value);
+  }
+}
+
+/**
+ * A simple literal value
+ */
+export class RDFLiteral extends RDFNode {
+  constructor(value) {
+    super();
+    this._value = value;
+  }
+
+  getValue() {
+    return this._value;
+  }
+}
+
+/**
+ * This is an RDF node that can be a subject so a resource or a blank node
+ */
+class RDFSubject extends RDFNode {
+  constructor(ds) {
+    super();
+    // A lookup of the assertions with this as the subject. Keyed on predicate
+    this._assertions = {};
+    // A lookup of the assertions with this as the object. Keyed on predicate
+    this._backwards = {};
+    // The datasource this subject belongs to
+    this._ds = ds;
+    // The DOM elements in the document that represent this subject. Array of Element
+    this._elements = [];
+  }
+
+  /**
+   * Parses the given Element from the DOM document
+   */
+  /* eslint-disable complexity */
+  _parseElement(element) {
+    this._elements.push(element);
+
+    // There might be an inferred rdf:type assertion in the element name
+    if (element.namespaceURI != NS_RDF ||
+        element.localName != "Description") {
+      var assertion = new RDFAssertion(this, RDF_R("type"),
+                                       this._ds.getResource(element.namespaceURI + element.localName));
+      assertion._DOMnode = element;
+      assertion._isSubjectElement = true;
+      this._addAssertion(assertion);
+    }
+
+    // Certain attributes can be literal properties
+    for (let attr of element.attributes) {
+      if (attr.namespaceURI == NS_XML || attr.namespaceURI == NS_XMLNS ||
+          attr.nodeName == "xmlns")
+        continue;
+      if ((attr.namespaceURI == NS_RDF || !attr.namespaceURI) &&
+          (["nodeID", "about", "resource", "ID", "parseType"].includes(attr.localName)))
+        continue;
+      var object = null;
+      if (attr.namespaceURI == NS_RDF) {
+        if (attr.localName == "type")
+          object = this._ds.getResource(attr.nodeValue);
+      }
+      if (!object)
+        object = new RDFLiteral(attr.nodeValue);
+      assertion = new RDFAssertion(this, attr.namespaceURI + attr.localName, object);
+      assertion._DOMnode = attr;
+      this._addAssertion(assertion);
+    }
+
+    var child = element.firstChild;
+    element.listCounter = 1;
+    while (child) {
+      if (isElement(child)) {
+        object = null;
+        var predicate = child.namespaceURI + child.localName;
+        if (child.namespaceURI == NS_RDF) {
+          if (child.localName == "li") {
+            predicate = RDF_R(`_${element.listCounter}`);
+            element.listCounter++;
+          }
+        }
+
+        // Check for and bail out on unknown attributes on the property element
+        for (let attr of child.attributes) {
+          // Ignore XML namespaced attributes
+          if (attr.namespaceURI == NS_XML)
+            continue;
+          // These are reserved by XML for future use
+          if (attr.localName.substring(0, 3).toLowerCase() == "xml")
+            continue;
+          // We can handle these RDF attributes
+          if ((!attr.namespaceURI || attr.namespaceURI == NS_RDF) &&
+              ["resource", "nodeID"].includes(attr.localName))
+            continue;
+          // This is a special attribute we handle for compatibility with Mozilla RDF
+          if (attr.namespaceURI == NS_NC &&
+              attr.localName == "parseType")
+            continue;
+        }
+
+        var parseType = child.getAttributeNS(NS_NC, "parseType");
+
+        var resource = getRDFAttribute(child, "resource");
+        var nodeID = getRDFAttribute(child, "nodeID");
+
+        if (resource !== undefined) {
+          var base = Services.io.newURI(element.baseURI);
+          object = this._ds.getResource(base.resolve(resource));
+        } else if (nodeID !== undefined) {
+          object = this._ds.getBlankNode(nodeID);
+        } else {
+          var hasText = false;
+          var childElement = null;
+          var subchild = child.firstChild;
+          while (subchild) {
+            if (isText(subchild) && /\S/.test(subchild.nodeValue)) {
+              hasText = true;
+            } else if (isElement(subchild)) {
+              childElement = subchild;
+            }
+            subchild = subchild.nextSibling;
+          }
+
+          if (childElement) {
+            object = this._ds._getSubjectForElement(childElement);
+            object._parseElement(childElement);
+          } else
+            object = new RDFLiteral(child.textContent);
+        }
+
+        assertion = new RDFAssertion(this, predicate, object);
+        this._addAssertion(assertion);
+        assertion._DOMnode = child;
+      }
+      child = child.nextSibling;
+    }
+  }
+  /* eslint-enable complexity */
+
+  /**
+   * Adds a new assertion to the internal hashes. Should be called for every
+   * new assertion parsed or created programmatically.
+   */
+  _addAssertion(assertion) {
+    var predicate = assertion.getPredicate();
+    if (predicate in this._assertions)
+      this._assertions[predicate].push(assertion);
+    else
+      this._assertions[predicate] = [ assertion ];
+
+    var object = assertion.getObject();
+    if (object instanceof RDFSubject) {
+      // Create reverse assertion
+      if (predicate in object._backwards)
+        object._backwards[predicate].push(assertion);
+      else
+        object._backwards[predicate] = [ assertion ];
+    }
+  }
+
+  /**
+   * Returns all objects in assertions with this subject and the given predicate.
+   */
+  getObjects(predicate) {
+    if (predicate in this._assertions)
+      return Array.from(this._assertions[predicate],
+                        i => i.getObject());
+
+    return [];
+  }
+
+  /**
+   * Retrieves the first property value for the given predicate.
+   */
+  getProperty(predicate) {
+    if (predicate in this._assertions)
+      return this._assertions[predicate][0].getObject();
+    return null;
+  }
+}
+
+/**
+ * Creates a new RDFResource for the datasource. Private.
+ */
+export class RDFResource extends RDFSubject {
+  constructor(ds, uri) {
+    super(ds);
+    // This is the uri that the resource represents.
+    this._uri = uri;
+  }
+}
+
+/**
+ * Creates a new blank node. Private.
+ */
+export class RDFBlankNode extends RDFSubject {
+  constructor(ds, nodeID) {
+    super(ds);
+    // The nodeID of this node. May be null if there is no ID.
+    this._nodeID = nodeID;
+  }
+
+  /**
+   * Sets attributes on the DOM element to mark it as representing this node
+   */
+  _applyToElement(element) {
+    if (!this._nodeID)
+      return;
+    if (USE_RDFNS_ATTR) {
+      var prefix = this._ds._resolvePrefix(element, RDF_R("nodeID"));
+      element.setAttributeNS(prefix.namespaceURI, prefix.qname, this._nodeID);
+    } else {
+      element.setAttribute("nodeID", this._nodeID);
+    }
+  }
+
+  /**
+   * Creates a new Element in the document for holding assertions about this
+   * subject. The URI controls what tagname to use.
+   */
+  _createNewElement(uri) {
+    // If there are already nodes representing this in the document then we need
+    // a nodeID to match them
+    if (!this._nodeID && this._elements.length > 0) {
+      this._ds._createNodeID(this);
+      for (let element of this._elements)
+        this._applyToElement(element);
+    }
+
+    return super._createNewElement.call(uri);
+  }
+
+  /**
+   * Adds a reference to this node to the given property Element.
+   */
+  _addReferenceToElement(element) {
+    if (this._elements.length > 0 && !this._nodeID) {
+      // In document elsewhere already
+      // Create a node ID and update the other nodes referencing
+      this._ds._createNodeID(this);
+      for (let element of this._elements)
+        this._applyToElement(element);
+    }
+
+    if (this._nodeID) {
+      if (USE_RDFNS_ATTR) {
+        let prefix = this._ds._resolvePrefix(element, RDF_R("nodeID"));
+        element.setAttributeNS(prefix.namespaceURI, prefix.qname, this._nodeID);
+      } else {
+        element.setAttribute("nodeID", this._nodeID);
+      }
+    } else {
+      // Add the empty blank node, this is generally right since further
+      // assertions will be added to fill this out
+      var newelement = this._ds._addElement(element, RDF_R("Description"));
+      newelement.listCounter = 1;
+      this._elements.push(newelement);
+    }
+  }
+
+    /**
+     * Removes any reference to this node from the given property Element.
+     */
+    _removeReferenceFromElement(element) {
+      if (element.hasAttributeNS(NS_RDF, "nodeID"))
+        element.removeAttributeNS(NS_RDF, "nodeID");
+      if (element.hasAttribute("nodeID"))
+        element.removeAttribute("nodeID");
+    }
+
+  getNodeID() {
+    return this._nodeID;
+  }
+}
+
+/**
+ * Creates a new RDFDataSource from the given document. The document will be
+ * changed as assertions are added and removed to the RDF. Pass a null document
+ * to start with an empty graph.
+ */
+export class RDFDataSource {
+  constructor(document) {
+    // All known resources, indexed on URI
+    this._resources = {};
+    // All blank nodes
+    this._allBlankNodes = [];
+
+    // The underlying DOM document for this datasource
+    this._document = document;
+    this._parseDocument();
+  }
+
+  static loadFromString(text) {
+    let parser = new DOMParser();
+    let document = parser.parseFromString(text, "application/xml");
+
+    return new this(document);
+  }
+
+  /**
+   * Returns an rdf subject for the given DOM Element. If the subject has not
+   * been seen before a new one is created.
+   */
+  _getSubjectForElement(element) {
+    var about = getRDFAttribute(element, "about");
+
+    if (about !== undefined) {
+      let base = Services.io.newURI(element.baseURI);
+      return this.getResource(base.resolve(about));
+    }
+    return this.getBlankNode(null);
+  }
+
+  /**
+   * Parses the document for subjects at the top level.
+   */
+  _parseDocument() {
+    var domnode = this._document.documentElement.firstChild;
+    while (domnode) {
+      if (isElement(domnode)) {
+        var subject = this._getSubjectForElement(domnode);
+        subject._parseElement(domnode);
+      }
+      domnode = domnode.nextSibling;
+    }
+  }
+
+  /**
+   * Gets a blank node. nodeID may be null and if so a new blank node is created.
+   * If a nodeID is given then the blank node with that ID is returned or created.
+   */
+  getBlankNode(nodeID) {
+    var rdfnode = new RDFBlankNode(this, nodeID);
+    this._allBlankNodes.push(rdfnode);
+    return rdfnode;
+  }
+
+  /**
+   * Gets the resource for the URI. The resource is created if it has not been
+   * used already.
+   */
+  getResource(uri) {
+    if (uri in this._resources)
+      return this._resources[uri];
+
+    var resource = new RDFResource(this, uri);
+    this._resources[uri] = resource;
+    return resource;
+  }
+}
\ No newline at end of file
diff --git a/modules/firefox.home/chrome/utils/RDFManifestConverter.sys.mjs b/modules/firefox.home/chrome/utils/RDFManifestConverter.sys.mjs
new file mode 100644
index 0000000..25cae7e
--- /dev/null
+++ b/modules/firefox.home/chrome/utils/RDFManifestConverter.sys.mjs
@@ -0,0 +1,99 @@
+ /* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+import { RDFDataSource } from "chrome://userchromejs/content/RDFDataSource.sys.mjs";
+
+const RDFURI_INSTALL_MANIFEST_ROOT = "urn:mozilla:install-manifest";
+
+function EM_R(aProperty) {
+  return `http://www.mozilla.org/2004/em-rdf#${aProperty}`;
+}
+
+function getValue(literal) {
+  return literal && literal.getValue();
+}
+
+function getProperty(resource, property) {
+  return getValue(resource.getProperty(EM_R(property)));
+}
+
+class Manifest {
+  constructor(ds) {
+    this.ds = ds;
+  }
+
+  static loadFromString(text) {
+    return new this(RDFDataSource.loadFromString(text));
+  }
+}
+
+export class InstallRDF extends Manifest {
+  _readProps(source, obj, props) {
+    for (let prop of props) {
+      let val = getProperty(source, prop);
+      if (val != null) {
+        obj[prop] = val;
+      }
+    }
+  }
+
+  _readArrayProp(source, obj, prop, target, decode = getValue) {
+    let result = Array.from(source.getObjects(EM_R(prop)),
+                            target => decode(target));
+    if (result.length) {
+      obj[target] = result;
+    }
+  }
+
+  _readArrayProps(source, obj, props, decode = getValue) {
+    for (let [prop, target] of Object.entries(props)) {
+      this._readArrayProp(source, obj, prop, target, decode);
+    }
+  }
+
+  _readLocaleStrings(source, obj) {
+    this._readProps(source, obj, ["name", "description", "creator", "homepageURL"]);
+    this._readArrayProps(source, obj, {
+      locale: "locales",
+      developer: "developers",
+      translator: "translators",
+      contributor: "contributors",
+    });
+  }
+
+  decode() {
+    let root = this.ds.getResource(RDFURI_INSTALL_MANIFEST_ROOT);
+    let result = {};
+
+    let props = ["id", "version", "type", "updateURL", "optionsURL",
+                 "optionsType", "aboutURL", "iconURL",
+                 "bootstrap", "unpack", "strictCompatibility"];
+    this._readProps(root, result, props);
+
+    let decodeTargetApplication = source => {
+      let app = {};
+      this._readProps(source, app, ["id", "minVersion", "maxVersion"]);
+      return app;
+    };
+
+    let decodeLocale = source => {
+      let localized = {};
+      this._readLocaleStrings(source, localized);
+      return localized;
+    };
+
+    this._readLocaleStrings(root, result);
+
+    this._readArrayProps(root, result, {"targetPlatform": "targetPlatforms"});
+    this._readArrayProps(root, result, {"targetApplication": "targetApplications"},
+                         decodeTargetApplication);
+    this._readArrayProps(root, result, {"localized": "localized"},
+                         decodeLocale);
+    this._readArrayProps(root, result, {"dependency": "dependencies"},
+                         source => getProperty(source, "id"));
+
+    return result;
+  }
+}
\ No newline at end of file
diff --git a/modules/firefox.home/chrome/utils/chrome.manifest b/modules/firefox.home/chrome/utils/chrome.manifest
new file mode 100644
index 0000000..d9076b2
--- /dev/null
+++ b/modules/firefox.home/chrome/utils/chrome.manifest
@@ -0,0 +1,2 @@
+content userchromejs ./
+resource userchromejs ../
diff --git a/modules/firefox.home/chrome/utils/userChrome.jsm b/modules/firefox.home/chrome/utils/userChrome.jsm
new file mode 100644
index 0000000..17a9224
--- /dev/null
+++ b/modules/firefox.home/chrome/utils/userChrome.jsm
@@ -0,0 +1,231 @@
+let EXPORTED_SYMBOLS = [];

+

+const { xPref } = ChromeUtils.import('chrome://userchromejs/content/xPref.jsm');

+const { Management } = ChromeUtils.import('resource://gre/modules/Extension.jsm');

+const { AppConstants } = ChromeUtils.import('resource://gre/modules/AppConstants.jsm');

+

+let UC = {

+  webExts: new Map(),

+  sidebar: new Map()

+};

+

+let _uc = {

+  ALWAYSEXECUTE: 'rebuild_userChrome.uc.js',

+  BROWSERCHROME: AppConstants.MOZ_APP_NAME == 'thunderbird' ? 'chrome://messenger/content/messenger.xhtml' : 'chrome://browser/content/browser.xhtml',

+  BROWSERTYPE: AppConstants.MOZ_APP_NAME == 'thunderbird' ? 'mail:3pane' : 'navigator:browser',

+  BROWSERNAME: AppConstants.MOZ_APP_NAME.charAt(0).toUpperCase() + AppConstants.MOZ_APP_NAME.slice(1),

+  PREF_ENABLED: 'userChromeJS.enabled',

+  PREF_SCRIPTSDISABLED: 'userChromeJS.scriptsDisabled',

+

+  chromedir: Services.dirsvc.get('UChrm', Ci.nsIFile),

+  scriptsDir: '',

+

+  sss: Cc["@mozilla.org/content/style-sheet-service;1"].getService(Ci.nsIStyleSheetService),

+

+  getScripts: function () {

+    this.scripts = {};

+    let files = this.chromedir.directoryEntries.QueryInterface(Ci.nsISimpleEnumerator);

+    while (files.hasMoreElements()) {

+      let file = files.getNext().QueryInterface(Ci.nsIFile);

+      if (/\.uc\.js$/i.test(file.leafName)) {

+        _uc.getScriptData(file);

+      }

+    }

+  },

+

+  getScriptData: function (aFile) {

+    let aContent = this.readFile(aFile);

+    let header = (aContent.match(/^\/\/ ==UserScript==\s*\n(?:.*\n)*?\/\/ ==\/UserScript==\s*\n/m) || [''])[0];

+    let match, rex = {

+      include: [],

+      exclude: []

+    };

+    let findNextRe = /^\/\/ @(include|exclude)\s+(.+)\s*$/gm;

+    while ((match = findNextRe.exec(header))) {

+      rex[match[1]].push(match[2].replace(/^main$/i, _uc.BROWSERCHROME).replace(/\*/g, '.*?'));

+    }

+    if (!rex.include.length) {

+      rex.include.push(_uc.BROWSERCHROME);

+    }

+    let exclude = rex.exclude.length ? '(?!' + rex.exclude.join('$|') + '$)' : '';

+

+    let def = ['', ''];

+    let author = (header.match(/\/\/ @author\s+(.+)\s*$/im) || def)[1];

+    let filename = aFile.leafName || '';

+

+    return this.scripts[filename] = {

+      filename: filename,

+      file: aFile,

+      url: Services.io.getProtocolHandler('file').QueryInterface(Ci.nsIFileProtocolHandler).getURLSpecFromDir(this.chromedir) + filename,

+      name: (header.match(/\/\/ @name\s+(.+)\s*$/im) || def)[1],

+      description: (header.match(/\/\/ @description\s+(.+)\s*$/im) || def)[1],

+      version: (header.match(/\/\/ @version\s+(.+)\s*$/im) || def)[1],

+      author: (header.match(/\/\/ @author\s+(.+)\s*$/im) || def)[1],

+      regex: new RegExp('^' + exclude + '(' + (rex.include.join('|') || '.*') + ')$', 'i'),

+      id: (header.match(/\/\/ @id\s+(.+)\s*$/im) || ['', filename.split('.uc.js')[0] + '@' + (author || 'userChromeJS')])[1],

+      homepageURL: (header.match(/\/\/ @homepageURL\s+(.+)\s*$/im) || def)[1],

+      downloadURL: (header.match(/\/\/ @downloadURL\s+(.+)\s*$/im) || def)[1],

+      updateURL: (header.match(/\/\/ @updateURL\s+(.+)\s*$/im) || def)[1],

+      optionsURL: (header.match(/\/\/ @optionsURL\s+(.+)\s*$/im) || def)[1],

+      startup: (header.match(/\/\/ @startup\s+(.+)\s*$/im) || def)[1],

+      shutdown: (header.match(/\/\/ @shutdown\s+(.+)\s*$/im) || def)[1],

+      onlyonce: /\/\/ @onlyonce\b/.test(header),

+      isRunning: false,

+      get isEnabled() {

+        return (xPref.get(_uc.PREF_SCRIPTSDISABLED) || '').split(',').indexOf(this.filename) == -1;

+      }

+    }

+  },

+

+  readFile: function (aFile, metaOnly = false) {

+    let stream = Cc['@mozilla.org/network/file-input-stream;1'].createInstance(Ci.nsIFileInputStream);

+    stream.init(aFile, 0x01, 0, 0);

+    let cvstream = Cc['@mozilla.org/intl/converter-input-stream;1'].createInstance(Ci.nsIConverterInputStream);

+    cvstream.init(stream, 'UTF-8', 1024, Ci.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER);

+    let content = '',

+        data = {};

+    while (cvstream.readString(4096, data)) {

+      content += data.value;

+      if (metaOnly && content.indexOf('// ==/UserScript==') > 0) {

+        break;

+      }

+    }

+    cvstream.close();

+    return content.replace(/\r\n?/g, '\n');

+  },

+

+  everLoaded: [],

+  

+  loadScript: function (script, win) {

+    if (!script.regex.test(win.location.href) || (script.filename != this.ALWAYSEXECUTE && !script.isEnabled)) {

+      return;

+    }

+

+    if (script.onlyonce && script.isRunning) {

+      if (script.startup) {

+        eval(script.startup);

+      }

+      return;

+    }

+

+    try {

+      Services.scriptloader.loadSubScript(script.url + '?' + script.file.lastModifiedTime,

+                                          script.onlyonce ? { window: win } : win);

+      script.isRunning = true;

+      if (script.startup) {

+        eval(script.startup);

+      }

+      if (!script.shutdown) {

+        this.everLoaded.push(script.id);

+      }

+    } catch (ex) {

+      Cu.reportError(ex);

+    }

+  },

+

+  windows: function (fun, onlyBrowsers = true) {

+    let windows = Services.wm.getEnumerator(onlyBrowsers ? this.BROWSERTYPE : null);

+    while (windows.hasMoreElements()) {

+      let win = windows.getNext();

+      if (!win._uc)

+        continue;

+      if (!onlyBrowsers) {

+        let frames = win.docShell.getAllDocShellsInSubtree(Ci.nsIDocShellTreeItem.typeAll, Ci.nsIDocShell.ENUMERATE_FORWARDS);

+        let res = frames.some(frame => {

+          let fWin = frame.domWindow;

+          let {document, location} = fWin;

+          if (fun(document, fWin, location))

+            return true;

+        });

+        if (res)

+          break;

+      } else {

+        let {document, location} = win;

+        if (fun(document, win, location))

+          break;

+      }

+    }

+  },

+

+  createElement: function (doc, tag, atts, XUL = true) {

+    let el = XUL ? doc.createXULElement(tag) : doc.createElement(tag);

+    for (let att in atts) {

+      el.setAttribute(att, atts[att]);

+    }

+    return el

+  }

+};

+

+if (xPref.get(_uc.PREF_ENABLED) === undefined) {

+  xPref.set(_uc.PREF_ENABLED, true, true);

+}

+

+if (xPref.get(_uc.PREF_SCRIPTSDISABLED) === undefined) {

+  xPref.set(_uc.PREF_SCRIPTSDISABLED, '', true);

+}

+

+let UserChrome_js = {

+  observe: function (aSubject) {

+    aSubject.addEventListener('DOMContentLoaded', this, {once: true});

+  },

+

+  handleEvent: function (aEvent) {

+    let document = aEvent.originalTarget;

+    let window = document.defaultView;

+    this.load(window);

+  },

+

+  load: function (window) {

+    let location = window.location;

+

+    if (!this.sharedWindowOpened && location.href == 'chrome://extensions/content/dummy.xhtml') {

+      this.sharedWindowOpened = true;

+

+      Management.on('extension-browser-inserted', function (topic, browser) {

+        browser.messageManager.addMessageListener('Extension:BackgroundViewLoaded', this.messageListener.bind(this));

+      }.bind(this));

+    } else if (/^(chrome:(?!\/\/global\/content\/commonDialog\.x?html)|about:(?!blank))/i.test(location.href)) {

+      window.UC = UC;

+      window._uc = _uc;

+      window.xPref = xPref;

+      if (window._gBrowser) // bug 1443849

+        window.gBrowser = window._gBrowser;

+

+      if (xPref.get(_uc.PREF_ENABLED)) {

+        Object.values(_uc.scripts).forEach(script => {

+          _uc.loadScript(script, window);

+        });

+      } else if (!UC.rebuild) {

+        _uc.loadScript(_uc.scripts[_uc.ALWAYSEXECUTE], window);

+      }

+    }

+  },

+

+  messageListener: function (msg) {

+    const browser = msg.target;

+    const { addonId } = browser._contentPrincipal;

+

+    browser.messageManager.removeMessageListener('Extension:BackgroundViewLoaded', this.messageListener);

+

+    if (browser.ownerGlobal.location.href == 'chrome://extensions/content/dummy.xhtml') {

+      UC.webExts.set(addonId, browser);

+      Services.obs.notifyObservers(null, 'UCJS:WebExtLoaded', addonId);

+    } else {

+      let win = browser.ownerGlobal.windowRoot.ownerGlobal;

+      UC.sidebar.get(addonId)?.set(win, browser) || UC.sidebar.set(addonId, new Map([[win, browser]]));

+      Services.obs.notifyObservers(win, 'UCJS:SidebarLoaded', addonId);

+    }

+  }

+};

+

+if (!Services.appinfo.inSafeMode) {

+  _uc.chromedir.append(_uc.scriptsDir);

+  _uc.getScripts();

+  let windows = Services.wm.getEnumerator(null);

+  while (windows.hasMoreElements()) {

+    let win = windows.getNext();

+    if (!('UC' in win))

+      UserChrome_js.load(win)

+  }

+  Services.obs.addObserver(UserChrome_js, 'chrome-document-global-created', false);

+}

diff --git a/modules/firefox.home/chrome/utils/xPref.jsm b/modules/firefox.home/chrome/utils/xPref.jsm
new file mode 100644
index 0000000..dcb44b3
--- /dev/null
+++ b/modules/firefox.home/chrome/utils/xPref.jsm
@@ -0,0 +1,85 @@
+let EXPORTED_SYMBOLS = ['xPref'];

+

+var xPref = {

+  get: function(prefPath, def = false, valueIfUndefined, setDefault = true) {

+    let sPrefs = def ?

+      Services.prefs.getDefaultBranch(null) :

+      Services.prefs;

+

+    try {

+      switch (sPrefs.getPrefType(prefPath)) {

+        case 0:

+          if (valueIfUndefined != undefined)

+            return this.set(prefPath, valueIfUndefined, setDefault);

+          else

+            return undefined;

+        case 32:

+          return sPrefs.getStringPref(prefPath);

+        case 64:

+          return sPrefs.getIntPref(prefPath);

+        case 128:

+          return sPrefs.getBoolPref(prefPath);

+      }

+    } catch (ex) {

+      return undefined;

+    }

+    return;

+  },

+

+  set: function(prefPath, value, def = false) {

+    let sPrefs = def ?

+      Services.prefs.getDefaultBranch(null) :

+      Services.prefs;

+

+    try {

+      switch (typeof value) {

+        case 'string':

+          return sPrefs.setStringPref(prefPath, value) || value;

+        case 'number':

+          return sPrefs.setIntPref(prefPath, value) || value;

+        case 'boolean':

+          return sPrefs.setBoolPref(prefPath, value) || value;

+      }

+    } catch (e) { console.error(e) }

+    return;

+  },

+

+  lock: function(prefPath, value) {

+    let sPrefs = Services.prefs;

+    this.lockedBackupDef[prefPath] = this.get(prefPath, true);

+    if (sPrefs.prefIsLocked(prefPath))

+      sPrefs.unlockPref(prefPath);

+

+    this.set(prefPath, value, true);

+    sPrefs.lockPref(prefPath);

+  },

+

+  lockedBackupDef: {},

+

+  unlock: function(prefPath) {

+    Services.prefs.unlockPref(prefPath);

+    let bkp = this.lockedBackupDef[prefPath];

+    if (bkp == undefined)

+      Services.prefs.deleteBranch(prefPath);

+    else

+      this.set(prefPath, bkp, true);

+  },

+

+  clear: Services.prefs.clearUserPref,

+

+  addListener: function(prefPath, trat) {

+    this.observer = function(aSubject, aTopic, prefPath) {

+      return trat(xPref.get(prefPath), prefPath);

+    }

+

+    Services.prefs.addObserver(prefPath, this.observer);

+    return {

+      prefPath,

+      observer: this.observer

+    };

+  },

+

+  removeListener: function(obs) {

+    Services.prefs.removeObserver(obs.prefPath, obs.observer);

+  }

+}

diff --git a/modules/firefox.home/default.nix b/modules/firefox.home/default.nix
index b315a36..e6f5aad 100644
--- a/modules/firefox.home/default.nix
+++ b/modules/firefox.home/default.nix
@@ -12,15 +12,17 @@ let
     "https://addons.mozilla.org/firefox/downloads/file/4218479/font_inspect-0.5.8.xpi"
     "https://addons.mozilla.org/firefox/downloads/file/4314064/react_devtools-5.3.1.xpi"
 
-    # content
+    # others
     "https://addons.mozilla.org/firefox/downloads/file/4332776/languagetool-8.11.6.xpi"
     "https://addons.mozilla.org/firefox/downloads/file/4317971/darkreader-4.9.88.xpi"
+    "https://addons.mozilla.org/firefox/downloads/file/3970625/screen_recorder-0.1.8.xpi"
   ];
 
   # about:config
   preferences = {
     "browser.newtabpage.enabled" = false;
     "browser.startup.homepage" = homepage-url;
+    "browser.newtab.url" = homepage-url;
 
     "browser.startup.blankWindow" = false;
     "browser.tabs.drawInTitlebar" = true;
@@ -29,17 +31,21 @@ let
     "browser.theme.toolbar-theme" = 0;
     "browser.aboutConfig.showWarning" = false;
     "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
-    "devtools.theme" = "dark";
-    "devtools.toolbox.alwaysOnTop" = true;
-    "devtools.toolbox.host" = "window";
+    # "devtools.theme" = "dark";
+    "ui.systemUsesDarkTheme" = 2;
+    # "devtools.toolbox.alwaysOnTop" = true;
+    # "devtools.toolbox.host" = "window";
     "layers.acceleration.force-enabled" = true;
     "gfx.webrender.all" = true;
-    "svg.context-properties.content.enabled" = true;
+    # "svg.context-properties.content.enabled" = true;
+    "widget.gtk.rounded-bottom-corners.enabled" = true;
+    "browser.urlbar.suggest.calculator" = true;
+    "browser.urlbar.unitConversion.enabled" = true;
 
     "extensions.pocket.enabled" = false;
     "extensions.pocket.showHome" = false;
     "browser.urlbar.suggest.pocket" = false;
-    "privacy.donottrackheader.enabled" = true;
+    # "privacy.donottrackheader.enabled" = true;
     "privacy.globalprivacycontrol.enabled" = true;
     "browser.search.suggest.enabled" = false;
     "browser.urlbar.suggest.searches" = false;
@@ -48,11 +54,23 @@ let
     "browser.dataFeatureRecommendations.enabled" = false;
     "extensions.htmlaboutaddons.recommendations.enabled" = false;
 
+    "layout.css.has-selector.enabled" = true; 
     "browser.toolbars.bookmarks.visibility" = "never";
-    "identity.fxaccounts.toolbar.enabled" = false;
+    # "identity.fxaccounts.toolbar.enabled" = false;
     "browser.tabs.insertAfterCurrent" = true;
     "browser.urlbar.shortcuts.bookmarks" = false;
     "browser.urlbar.suggest.bookmark" = false;
+    "browser.newtab.privateAllowed" = true;
+
+    "browser.download.forbid_open_with" = true;
+    "browser.download.autohideButton" = true;
+    "browser.download.useDownloadDir" = false;
+
+    # HAcky stuff
+    # "general.config.sandbox_enabled" = false;
+    # "general.config.obscure_value" = false;
+    "xpinstall.signatures.required" = false;
+    "extensions.install_origins.enabled" = false;
   };
 
   # https://mozilla.github.io/policy-templates
@@ -60,30 +78,40 @@ let
     ManagedBookmarks = [
       { toplevel_name = "Managed bookmarks"; }
       { name = "Daily Dev"; url = "https://app.daily.dev"; }
+      { name = "Email: Microsoft Outlook"; url = "https://outlook.office365.com/mail/"; }
+      { name = "Email: GMail"; url = "https://mail.google.com/mail/u/0/"; }
       # { name = "Shtuff"; children = [] }
     ];
     DisplayBookmarksToolbar = "never";
     NoDefaultBookmarks = true;
 
-    DisableTelemetry = true;
+    DisableAppUpdate = true;
+    DisableSystemAddonUpdate = true;
+    DisableProfileImport = true;
     DisableFirefoxStudies = true;
+    DisableTelemetry = true;
+    DisableFeedbackCommands = true;
+    DisablePocket = true;
     DisableAccounts = true;
     DontCheckDefaultBrowser = true;
     OfferToSaveLogins = false;
     PasswordManagerEnabled = false;
-    DefaultDownloadDirectory = "\${home}/Downloads/firefox";
+    DefaultDownloadDirectory = "${config.home.homeDirectory}/Downloads/firefox";
     NewTabPage = false;
     Homepage = { URL = homepage-url; StartPage = "previous-session"; };
+    OverrideFirstRunPage = "";
 
     # PopupBlocking = [];
     SearchEngines = {
       Default = "DuckDuckGo";
       SearchSuggestEnabled = false;
+      Remove = [ "Google" "Bing" "Amazon.com" "eBay" "Wikipedia" ];
+      PreventInstalls = false;
       Add = [
         {
           Name = "DuckDuckGo";
           URLTemplate = "https://duckduckgo.com/?q={searchTerms}";
-          Alias = "google";
+          Alias = "ddg";
         }
         {
           Name = "Google";
@@ -107,12 +135,30 @@ let
     #   };
     # };
 
-    Extensions = { Install = extensions; };
+    Extensions = {
+      Install = extensions;
+      Uninstall = [
+        "google@search.mozilla.org"
+        "bing@search.mozilla.org"
+        "amazondotcom@search.mozilla.org"
+        "ebay@search.mozilla.org"
+        "wikipedia@search.mozilla.org"
+      ];
+    };
+    ExtensionSettings = {
+      "google@search.mozilla.org".installation_mode = "blocked";
+      "bing@search.mozilla.org".installation_mode = "blocked";
+      "amazondotcom@search.mozilla.org".installation_mode = "blocked";
+      "ebay@search.mozilla.org".installation_mode = "blocked";
+      "wikipedia@search.mozilla.org".installation_mode = "blocked";
+    };
 
     Preferences = lib.mapAttrs (_key: val: { Status = "locked"; Value = val; }) preferences;
   };
 
-  firefox = pkgs.wrapFirefox unwrapped-firefox-package {};
+  firefox = pkgs.wrapFirefox unwrapped-firefox-package {
+    extraPrefs = builtins.readFile ./autoconfig.js;
+  };
 
   profilePath = "default";
 in {
@@ -121,14 +167,13 @@ in {
     package = firefox;
 
     nativeMessagingHosts = [ pkgs.tridactyl-native ];
-
     policies = policies;
   };
 
   home.file = {
     ".config/tridactyl".source = ./tridactyl;
 
-    ".mozilla/firefox/${profilePath}/chrome/userChrome.css".text = builtins.readFile ./userChrome.css;
+    ".mozilla/firefox/${profilePath}/chrome".source = ./chrome;
 
     ".mozilla/firefox/profiles.ini".text = lib.generators.toINI {} {
       Profile1 = {
diff --git a/modules/firefox.home/tridactyl/tridactylrc b/modules/firefox.home/tridactyl/tridactylrc
index cb1a043..2fe7075 100644
--- a/modules/firefox.home/tridactyl/tridactylrc
+++ b/modules/firefox.home/tridactyl/tridactylrc
@@ -1,56 +1,28 @@
 colorscheme phenax
 
-bind o fillcmdline tabopen
-bind O fillcmdline open
-bind p clipboard tabopen
-bind P clipboard open
-
 set hintnames numeric
+set hintfiltermode vimperator-reflow
 set editorcmd sensible-terminal -e nvim
 set newtab about:blank
 set viewsource default
-set browsermaps { "<c-//>": "escapehatch", "<c-,>": "escapehatch" }
+set browsermaps { "<C-,>": "escapehatch", "<C-6>": "noh" }
 
-" Tab control
+" Unbind default keys
 unbind d
 unbind D
-unbind <c-s-j>
-unbind <c-s-k>
-bind <c-d> tabclose
-bind <c-j> tabnext
-bind <c-k> tabprev
-bind <cs-j> tabmove +1
-bind <cs-k> tabmove -1
-
+unbind <C-j>
+unbind <C-k>
 unbind t
+unbind tt
 unbind T
-" unbind tt
-" bind tt tabopen file:///home/imsohexy/.config/qutebrowser/homepage/index.html
+unbind J
+unbind K
 
-unbind <s-j>
-unbind <s-k>
-bind <s-j> scrollpx 0 200
-bind <s-k> scrollpx 0 -200
+bind o fillcmdline tabopen
+bind O fillcmdline open
+bind p clipboard tabopen
+bind P clipboard open
 
-" Open tab by index
-bind <space>1 tab 1
-bind <c-1> tab 1
-bind <space>2 tab 2
-bind <c-2> tab 2
-bind <space>3 tab 3
-bind <c-3> tab 3
-bind <space>4 tab 4
-bind <c-4> tab 4
-bind <space>5 tab 5
-bind <c-5> tab 5
-bind <space>6 tab 6
-bind <c-6> tab 6
-bind <space>7 tab 7
-bind <c-7> tab 7
-bind <space>8 tab 8
-bind <c-8> tab 8
-bind <space>9 tab 9
-bind <c-9> tab 9
-bind <space>0 tab 10
-bind <c-0> tab 10
+bind --mode=normal J scrollpx 0 200
+bind --mode=normal K scrollpx 0 -200