| <html> |
| <head> |
| <title>Passing MessagePort to a SharedWorker</title> |
| <script src="worker_utils.js"></script> |
| <script> |
| function log(message) |
| { |
| document.getElementById("result").innerHTML += message + "<br>"; |
| } |
| |
| var worker = null; |
| var message_channel = null; |
| |
| function do_test() { |
| worker = new SharedWorker("messageport_worker.js"); |
| worker.port.onmessage = process_message_from_worker; |
| } |
| |
| function process_message_from_worker(event) { |
| log("Message from worker: " + event.data); |
| if (event.data == "Worker connected.") { |
| log("Sending a port to the worker."); |
| message_channel = new MessageChannel(); |
| worker.port.postMessage({message: "Sending a port.", port: message_channel.port2}, [message_channel.port2]); |
| } else if (event.data == "Worker got a port.") { |
| // Communicate with the worker via the message channel. |
| message_channel.port1.onmessage = function (event) { |
| log("Message from worker (via channel): " + event.data); |
| if (event.data == "Worker got a message via the passed port.") |
| onSuccess(); |
| else |
| onFailure(); |
| }; |
| message_channel.port1.start(); |
| log("Sending a message to the worker via the channel."); |
| message_channel.port1.postMessage({message: "Message via the channel."}); |
| } |
| } |
| |
| </script> |
| </head> |
| <body onload="do_test()"> |
| <div id=statusPanel></div> |
| <div id=result></div> |
| </body> |
| </html> |
