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