components/content-policy.js

   1 /**
   2  * (C) Copyright 2010 John J. Foerch
   3  *
   4  * Use, modification, and distribution are subject to the terms specified in the
   5  * COPYING file.
   6 **/
   7
   8 const Cc = Components.classes;
   9 const Ci = Components.interfaces;
  10 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
  11
  12 var content_policy_listener;
  13
  14 function content_policy () {
  15     this.conkeror = Cc["@conkeror.mozdev.org/application;1"]
  16         .getService()
  17         .wrappedJSObject;
  18     this.conkeror.define_hook("content_policy_hook", "RUN_HOOK_UNTIL_SUCCESS");
  19     this.conkeror.content_policy_listener = this;
  20 }
  21 content_policy.prototype = {
  22     QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentPolicy,
  23                                            Ci.nsIObserverService]),
  24     contractID: "@conkeror.org/content-policy-listener;1",
  25     classID: Components.ID("{2926dd11-4d76-4965-bcdc-4aaad70ada04}"),
  26     classDescription: "content_policy",
  27     _xpcom_factory: {
  28         createInstance: function (outer, iid) {
  29             if (outer)
  30                 throw Cr.NS_ERROR_NO_AGGREGATION;
  31             if (! content_policy_listener)
  32                 content_policy_listener = new content_policy();
  33             return content_policy_listener;
  34         }
  35     },
  36     _xpcom_categories: [{category: "content-policy"}],
  37
  38     enabled: false,
  39     shouldLoad: function (content_type,     //unsigned long
  40                           content_location, //nsIURI
  41                           request_origin,   //nsIURI
  42                           context,          //nsISupports
  43                           mime_type_guess,  //ACString
  44                           extra)            //nsISupports
  45     {
  46         var action;
  47         if (this.enabled)
  48             action = this.conkeror.content_policy_hook.run(
  49                 content_type, content_location, request_origin,
  50                 context, mime_type_guess, extra);
  51         return (action || Ci.nsIContentPolicy.ACCEPT);
  52     },
  53     shouldProcess: function (content_type,     //unsigned long
  54                              content_location, //nsIURI
  55                              request_origin,   //nsIURI
  56                              context,          //nsISupports
  57                              mime_type,        //ACString
  58                              extra)            //nsISupports
  59     {
  60         return Ci.nsIContentPolicy.ACCEPT;
  61     }
  62 };
  63
  64 if (XPCOMUtils.generateNSGetFactory)
  65     var NSGetFactory = XPCOMUtils.generateNSGetFactory([content_policy]); //XULRunner 2.0
  66 else
  67     var NSGetModule = XPCOMUtils.generateNSGetModule([content_policy]);