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  * Copyright 2009 Google Inc.
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  * use this file except in compliance with the License. You may obtain a copy of
  * the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
Represents the top level object for a Web Worker. Runs inside the webworker, so this class cannot assume that Window or Document exists.
public class WorkerGlobalScope extends JavaScriptObject {
  protected WorkerGlobalScope() {
    // protected constructor required for JavaScriptObject overlay.
  public final native void close() /*-{
  public final native WorkerLocation getLocation() /*-{
    return this.location;
  public final native void importScript(String url/*-{

Caveat!! If this array has more than one entry, importscript may not work. It should eventually.

  public final native void importScripts(JsArrayString urls/*-{
  public final void importScripts(String[] urls) {
    JsArrayString jsUrls = JsArrayString.createArray().cast();
    for (int i = 0, l = urls.lengthi < l; ++i) {
  public final native WorkerGlobalScope self() /*-{
    return self;

A handler that will be called if the worker encounters an error. Replaces any existing handler.

handler handler to set when a worker encounters an error.
  // TODO(zundel): use UncaughtExceptionHandler... chain more than one handler?
  // May not be needed until hosted mode can support webworkers.
  public final native void setOnError(ErrorHandler handler/*-{
    this.onerror = function(event) {;)(event);
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