text: /*
   * This file is part of Adblock Plus <https://adblockplus.org/>,
   * Copyright (C) 2006-2015 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/>.
   */
  
  let {XPCOMUtils} = Cu.import("resource://gre/modules/XPCOMUtils.jsm", null);
  let {Services} = Cu.import("resource://gre/modules/Services.jsm", null);
  let {
    _MessageProxy: MessageProxy,
    _EventTarget: EventTarget,
    _getSender: getSender
  } = require("ext_common");
  exports.onMessage = new EventTarget();
  
  let messageProxy = new MessageProxy(
      Cc["@mozilla.org/globalmessagemanager;1"]
        .getService(Ci.nsIMessageListenerManager),
      exports.onMessage);
  onShutdown.add(function()
  {
    messageProxy._disconnect();
  });
  
  function Page(sender)
  {
    this._sender = sender;
  }
  Page.prototype = {
    sendMessage: function(message)
    {
      if (this._sender)
        this._sender.sendAsyncMessage("AdblockPlus:Message", {payload: message});
    }
  };
  exports.Page = Page;
  
  function PageMap()
  {
    this._map = new Map();
  
    Services.obs.addObserver(this, "message-manager-disconnect", true);
    onShutdown.add(function()
    {
      Services.obs.removeObserver(this, "message-manager-disconnect");
    }.bind(this));
  }
  PageMap.prototype = {
    QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
  
    observe: function(subject, topic, data)
    {
      if (topic == "message-manager-disconnect")
        this._map.delete(subject);
    },
  
    keys: function()
    {
      let result = [];
      for (let sender of this._map.keys())
        result.push(new Page(sender));
      return result;
    },
  
    get: function(page)
    {
      return this._map.get(page._sender);
    },
  
    set: function(page, value)
    {
      if (page._sender)
        this._map.set(page._sender, value);
    },
  
    has: function(page)
    {
      return this._map.has(page._sender);
    },
  
    delete: function(page)
    {
      this._map.delete(page._sender);
    }
  };
  exports.PageMap = PageMap;
  
  exports.showOptions = function()
  {
    require("ui").UI.openFiltersDialog();
  };
  