michael@0: /**
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/
michael@0:  */
michael@0: "use strict";
michael@0: 
michael@0: if (!("self" in this)) {
michael@0:   throw new Error("No 'self' exists on SharedWorkerGlobalScope!");
michael@0: }
michael@0: if (this !== self) {
michael@0:   throw new Error("'self' not equal to global object!");
michael@0: }
michael@0: if (!(self instanceof SharedWorkerGlobalScope)) {
michael@0:   throw new Error("self not a SharedWorkerGlobalScope instance!");
michael@0: }
michael@0: 
michael@0: var propsToCheck = [
michael@0:   "location",
michael@0:   "navigator",
michael@0:   "close",
michael@0:   "importScripts",
michael@0:   "setTimeout",
michael@0:   "clearTimeout",
michael@0:   "setInterval",
michael@0:   "clearInterval",
michael@0:   "dump",
michael@0:   "atob",
michael@0:   "btoa"
michael@0: ];
michael@0: 
michael@0: for (var index = 0; index < propsToCheck.length; index++) {
michael@0:   var prop = propsToCheck[index];
michael@0:   if (!(prop in self)) {
michael@0:     throw new Error("SharedWorkerGlobalScope has no '" + prop + "' property!");
michael@0:   }
michael@0: }
michael@0: 
michael@0: onconnect = function(event) {
michael@0:   if (!("SharedWorkerGlobalScope" in self)) {
michael@0:     throw new Error("SharedWorkerGlobalScope should be visible!");
michael@0:   }
michael@0:   if (!(self instanceof SharedWorkerGlobalScope)) {
michael@0:     throw new Error("The global should be a SharedWorkerGlobalScope!");
michael@0:   }
michael@0:   if (!(self instanceof WorkerGlobalScope)) {
michael@0:     throw new Error("The global should be a WorkerGlobalScope!");
michael@0:   }
michael@0:   if ("DedicatedWorkerGlobalScope" in self) {
michael@0:     throw new Error("DedicatedWorkerGlobalScope should not be visible!");
michael@0:   }
michael@0:   if (!(event instanceof MessageEvent)) {
michael@0:     throw new Error("'connect' event is not a MessageEvent!");
michael@0:   }
michael@0:   if (!("ports" in event)) {
michael@0:     throw new Error("'connect' event doesn't have a 'ports' property!");
michael@0:   }
michael@0:   if (event.ports.length != 1) {
michael@0:     throw new Error("'connect' event has a 'ports' property with length '" +
michael@0:                     event.ports.length + "'!");
michael@0:   }
michael@0:   if (!event.ports[0]) {
michael@0:     throw new Error("'connect' event has a null 'ports[0]' property!");
michael@0:   }
michael@0:   if (!(event.ports[0] instanceof MessagePort)) {
michael@0:     throw new Error("'connect' event has a 'ports[0]' property that isn't a " +
michael@0:                     "MessagePort!");
michael@0:   }
michael@0:   if (!(event.ports[0] == event.source)) {
michael@0:     throw new Error("'connect' event source property is incorrect!");
michael@0:   }
michael@0:   if (event.data) {
michael@0:     throw new Error("'connect' event has data: " + event.data);
michael@0:   }
michael@0: 
michael@0:   event.ports[0].onmessage = function(event) {
michael@0:     if (!(event instanceof MessageEvent)) {
michael@0:       throw new Error("'message' event is not a MessageEvent!");
michael@0:     }
michael@0:     if (!("ports" in event)) {
michael@0:       throw new Error("'message' event doesn't have a 'ports' property!");
michael@0:     }
michael@0:     if (!(event.ports === null)) {
michael@0:       throw new Error("'message' event has a non-null 'ports' property!");
michael@0:     }
michael@0:     event.target.postMessage(event.data);
michael@0:     throw new Error(event.data);
michael@0:   };
michael@0: };