dom/workers/test/errorPropagation_iframe.html

   1 <!--
   2   Any copyright is dedicated to the Public Domain.
   3   http://creativecommons.org/publicdomain/zero/1.0/
   4 -->
   5 <!DOCTYPE HTML>
   6 <html>
   7   <meta charset="utf-8">
   8   <body>
   9     <script type="text/javascript">
  10       var worker;
  11
  12       function start(workerCount, messageCallback) {
  13         var seenWindowError;
  14         window.onerror = function(message, filename, lineno) {
  15           if (!seenWindowError) {
  16             seenWindowError = true;
  17             messageCallback({
  18               type: "window",
  19               data: { message, filename, lineno }
  20             });
  21             return true;
  22           }
  23           return undefined;
  24         };
  25
  26         worker = new Worker("errorPropagation_worker.js");
  27
  28         worker.onmessage = function(event) {
  29           messageCallback(event.data);
  30         };
  31
  32         var seenWorkerError;
  33         worker.onerror = function(event) {
  34           if (!seenWorkerError) {
  35             seenWorkerError = true;
  36             messageCallback({
  37               type: "worker",
  38               data: {
  39                 message: event.message,
  40                 filename: event.filename,
  41                 lineno: event.lineno
  42               }
  43             });
  44             event.preventDefault();
  45           }
  46         };
  47
  48         worker.postMessage(workerCount);
  49       }
  50
  51       function stop() {
  52         worker.terminate();
  53       }
  54     </script>
  55   </body>
  56 </html>