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/**
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
"use strict";
if (self.name != "FrameWorker") {
throw new Error("Bad worker name: " + self.name);
}
var registeredPorts = [];
var errorCount = 0;
var storedData;
self.onconnect = function(event) {
var port = event.ports[0];
if (registeredPorts.length) {
var data = {
type: "connect"
};
registeredPorts.forEach(function(registeredPort) {
registeredPort.postMessage(data);
});
}
port.onmessage = function(event) {
switch (event.data.command) {
case "start":
break;
case "error":
throw new Error("Expected");
case "store":
storedData = event.data.data;
break;
case "retrieve":
var data = {
type: "result",
data: storedData
};
port.postMessage(data);
break;
default:
throw new Error("Unknown command '" + error.data.command + "'");
}
};
registeredPorts.push(port);
};
self.onerror = function(message, filename, lineno) {
if (!errorCount++) {
var data = {
type: "worker-error",
message: message,
filename: filename,
lineno: lineno
};
registeredPorts.forEach(function (registeredPort) {
registeredPort.postMessage(data);
});
// Prevent the error from propagating the first time only.
return true;
}
};
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