experimental subskin bootstrapper (noia extreme version)

bootstrap.js

/* 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/. */

/* The original author is: Nils Maier <https://tn123.org/> */

"use strict";

const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/AddonManager.jsm");

const lazySvc = XPCOMUtils.defineLazyServiceGetter.bind(XPCOMUtils);

Services = Object.create(Services);
lazySvc(Services, "sss", "@mozilla.org/content/style-sheet-service;1", "nsIStyleSheetService");


const THEME = "noia2_full@gd.noia";
const COMPANION = "noia2_full_xt@gd.noia";
const PREF_BRANCH = "extensions.noia2_full_v3_xt.";
const BASE_URI = "chrome://noia2_full_v3_xt_options/content/";

const BOOL_SHEETS = ["collapse", "newofficexp", "roundtabs", "personas", "noHead", "Cleaner", "BlueDropmarker", "inverse-size", "no-zebra", "reset-inv-bars"];
const RADIO_SHEETS = {
  "color": ["grey", "dark", "lightdark", "blue"],
  "throbber": ["stdThrobber", "bigThrobber", "newThrobber", "defThrobber", "defThrobberBlue"]
};


const Observer = {
  QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver]),
  observe: function(subject, topic, data) {
    reload();
  }
};

let dead = false;
let branch = null;
let applied = Object.create(null);

function install() {}
function uninstall() {}

function startup() {
  // 1. Check the corresponding theme is installed
  AddonManager.getAddonByID(THEME, function queryTheme(theme) {
    // 1.1. If not, uninstall ourselves and exit early
    if (!theme) {
      AddonManager.getAddonByID(COMPANION, function queryAddon(addon) {
        addon && addon.uninstall();
      });
      return;
    }
    // 2. Check the corresponding theme is active
    // 2.1 If Not, exit early
    if (!theme.isActive) {
      return;
    }
    init();
  });
}

function shutdown() {
  if (!branch || dead) {
    // not initialized
    return;
  }

  dead = true;
  branch.removeObserver("", Observer);
  branch = null;

  // unapply all
  for each (let i in Object.keys(applied)) {
    handleSheet(i, false);
  }
}

function init() {
  if (dead) {
    return;
  }

  // apply default prefs
  let defBranch = Services.prefs.getDefaultBranch(PREF_BRANCH);
  for each (let i in Object.keys(RADIO_SHEETS)) {
    defBranch.setIntPref(i, 0);
  }
  for each (let s in BOOL_SHEETS) {
    defBranch.setBoolPref(s, false);
  }

  branch = Services.prefs.getBranch(PREF_BRANCH);
  if ('nsIPrefBranch2' in Ci) {
    branch.QueryInterface(Ci.nsIPrefBranch2);
  }
  branch.addObserver("", Observer, false);
  reload();
}

function uri(sheet) {
  return Services.io.newURI(BASE_URI + sheet + ".css", null, null);
}

function handleSheet(sheet, condition) {
  if (condition) {
    if (sheet in applied) {
      return;
    }
    Services.sss.loadAndRegisterSheet(uri(sheet), Services.sss.AGENT_SHEET);
    applied[sheet] = true;
  }
  else {
    if (!(sheet in applied)) {
      return;
    }
    Services.sss.unregisterSheet(uri(sheet), Services.sss.AGENT_SHEET);
    delete applied[sheet];
  }
}

function reload() {
  if (dead) {
    return;
  }

  for (let [sheet, options] in Iterator(RADIO_SHEETS)) {
    let val = branch.getIntPref(sheet);
    if (val < 0 || val >= options.length) {
      val = 0;
      branch.setIntPref(sheet, val);
      return; // the observer will reload
    }
    for (let i = 0; i < options.length; ++i) {
      handleSheet(options[i], i == val);
    }
  }
  for each (let sheet in BOOL_SHEETS) {
    handleSheet(sheet, branch.getBoolPref(sheet));
  }
}