bootstrap.js

// see:
// https://developer.mozilla.org/en-US/Add-ons/Firefox_for_Android/Walkthrough
// https://developer.mozilla.org/en-US/Add-ons/Firefox_for_Android/Initialization_and_Cleanup#template_code

const { classes: Cc, interfaces: Ci, utils: Cu } = Components;

Cu.import('resource://gre/modules/Services.jsm');


var menuId;

function loadIntoWindow(window) {
  if (!window)
    return;
  menuId = window.NativeWindow.menu.add("Nice reader mode", null, function() {
    hideReaderToolbar(window);
  });
}

function unloadFromWindow(window) {
  if (!window)
    return;
  window.NativeWindow.menu.remove(menuId);
}


function hideReaderToolbar(window) {
    // fjkejiofjweofj fjewofjwoefji;
    var readerToolbar = window.content.document.getElementById("reader-toolbar");
    readerToolbar.style.display = "none";
}


var windowListener = {
  onOpenWindow: function(aWindow) {
    // Wait for the window to finish loading
    let domWindow = aWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowInternal || Ci.nsIDOMWindow);
    domWindow.addEventListener("UIReady", function onLoad() {
      domWindow.removeEventListener("UIReady", onLoad, false);
      loadIntoWindow(domWindow);
    }, false);
  },
 
  onCloseWindow: function(aWindow) {},
  onWindowTitleChange: function(aWindow, aTitle) {}
};

function startup(aData, aReason) {
  // Load into any existing windows
  let windows = Services.wm.getEnumerator("navigator:browser");
  while (windows.hasMoreElements()) {
    let domWindow = windows.getNext().QueryInterface(Ci.nsIDOMWindow);
    loadIntoWindow(domWindow);
  }

  // Load into any new windows
  Services.wm.addListener(windowListener);
}

function shutdown(aData, aReason) {
  // When the application is shutting down we normally don't have to clean
  // up any UI changes made
  if (aReason == APP_SHUTDOWN)
    return;

  // Stop listening for new windows
  Services.wm.removeListener(windowListener);

  // Unload from any existing windows
  let windows = Services.wm.getEnumerator("navigator:browser");
  while (windows.hasMoreElements()) {
    let domWindow = windows.getNext().QueryInterface(Ci.nsIDOMWindow);
    unloadFromWindow(domWindow);
  }
}

function install(aData, aReason) {}
function uninstall(aData, aReason) {}