background.js

/*
 * This file is part of Adblock Plus <https://adblockplus.org/>,
 * Copyright (C) 2006-present eyeo GmbH
 *
 * Adblock Plus is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 *
 * Adblock Plus 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
 */

"use strict";

const {port} = require("messaging");

port.on("forward", (msg, sender) =>
{
  let targetPage;
  if (msg.targetPageId)
    targetPage = ext.getPage(msg.targetPageId);
  else
    targetPage = sender.page;

  if (targetPage)
  {
    msg.payload.sender = sender.page.id;
    if (msg.expectsResponse)
      return new Promise(targetPage.sendMessage.bind(targetPage, msg.payload));
    targetPage.sendMessage(msg.payload);
  }
});