The Tor Browser: dom/workers/test/extensions/bootstrap/bootstrap.js@6474c204b198 (annotated)

dom/workers/test/extensions/bootstrap/bootstrap.js@6474c204b198 (annotated)

dom/workers/test/extensions/bootstrap/bootstrap.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /**
  * Any copyright is dedicated to the Public Domain.
  * http://creativecommons.org/publicdomain/zero/1.0/
  */
 const Ci = Components.interfaces;
 const Cu = Components.utils;
 Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 function testForExpectedSymbols(stage, data) {
   const expectedSymbols = [ "Worker", "ChromeWorker" ];
   for each (var symbol in expectedSymbols) {
     Services.prefs.setBoolPref("workertest.bootstrap." + stage + "." + symbol,
                                symbol in this);
   }
 }
 var gWorkerAndCallback = {
   _ensureStarted: function() {
     if (!this._worker) {
       throw new Error("Not yet started!");
     }
   },
   start: function(data) {
     if (!this._worker) {
       var file = data.installPath;
       var fileuri = file.isDirectory() ?
                     Services.io.newFileURI(file) :
                     Services.io.newURI('jar:' + file.path + '!/', null, null);
       var resourceName = encodeURIComponent(data.id);
       Services.io.getProtocolHandler("resource").
                   QueryInterface(Ci.nsIResProtocolHandler).
                   setSubstitution(resourceName, fileuri);
       this._worker = new Worker("resource://" + resourceName + "/worker.js");
       this._worker.onerror = function(event) {
         Cu.reportError(event.message);
         event.preventDefault();
       };
     }
   },
   stop: function() {
     if (this._worker) {
       this._worker.terminate();
       delete this._worker;
     }
   },
   set callback(val) {
     this._ensureStarted();
     var callback = val.QueryInterface(Ci.nsIObserver);
     if (this._callback != callback) {
       if (callback) {
         this._worker.onmessage = function(event) {
           callback.observe(this, event.type, event.data);
         };
         this._worker.onerror = function(event) {
           callback.observe(this, event.type, event.message);
           event.preventDefault();
         };
       }
       else {
         this._worker.onmessage = null;
         this._worker.onerror = null;
       }
       this._callback = callback;
     }
   },
   get callback() {
     return this._callback;
   },
   postMessage: function(data) {
     this._ensureStarted();
     this._worker.postMessage(data);
   },
   terminate: function() {
     this._ensureStarted();
     this._worker.terminate();
     delete this._callback;
   }
 };
 function WorkerTestBootstrap() {
 }
 WorkerTestBootstrap.prototype = {
   observe: function(subject, topic, data) {
     gWorkerAndCallback.callback = subject;
     switch (topic) {
       case "postMessage":
         gWorkerAndCallback.postMessage(data);
         break;
       case "terminate":
         gWorkerAndCallback.terminate();
         break;
       default:
         throw new Error("Unknown worker command");
     }
   },
   QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver])
 };
 var gFactory = {
   register: function() {
     var registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
     var classID = Components.ID("{36b5df0b-8dcf-4aa2-9c45-c51d871295f9}");
     var description = "WorkerTestBootstrap";
     var contractID = "@mozilla.org/test/workertestbootstrap;1";
     var factory = XPCOMUtils._getFactory(WorkerTestBootstrap);
     registrar.registerFactory(classID, description, contractID, factory);
     this.unregister = function() {
       registrar.unregisterFactory(classID, factory);
       delete this.unregister;
     };
   }
 };
 function install(data, reason) {
   testForExpectedSymbols("install");
 }
 function startup(data, reason) {
   testForExpectedSymbols("startup");
   gFactory.register();
   gWorkerAndCallback.start(data);
 }
 function shutdown(data, reason) {
   testForExpectedSymbols("shutdown");
   gWorkerAndCallback.stop();
   gFactory.unregister();
 }
 function uninstall(data, reason) {
   testForExpectedSymbols("uninstall");
 }