third_party/WebKit/LayoutTests/fast/workers/resources/worker-messageport.js

   1 onmessage = function(evt) {
   2     if (evt.data == "port") {
   3         if (evt.ports) {
   4             postMessage("PASS: Received message port");
   5             evt.ports[0].onmessage = pingBack;
   6             evt.ports[0].start();
   7         } else {
   8             postMessage("FAIL: Did not receive expected MessagePort");
   9         }
  10     } else if (evt.data == "noport") {
  11         if (!evt.ports || evt.ports.length) {
  12             postMessage("FAIL: Received message port or null ports array");
  13         } else {
  14             postMessage("PASS: evt.ports = [] as expected");
  15         }
  16     } else if (evt.data == "spam") {
  17         for (var i = 0 ; i < 1000 ; i++) {
  18             evt.ports[0].postMessage(i);
  19         }
  20         postMessage("spamDone");
  21     } else if (evt.data == "getport") {
  22         var channel = new MessageChannel();
  23         postMessage("port", [channel.port1]);
  24         channel.port2.onmessage = pingBack;
  25         channel.port2.start();
  26     } else {
  27         postMessage("Unknown message:" + evt.data);
  28     }
  29
  30 }
  31
  32 function pingBack(evt) {
  33     // Make sure we got the expected data and send a return message over
  34     // the port.
  35     if (evt.data == "ping") {
  36         evt.target.postMessage("pong");
  37     } else {
  38         postMessage("FAIL: unknown message: " + evt.data);
  39     }
  40 }