52 lines
1.3 KiB
JavaScript
52 lines
1.3 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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function messageListener(event) {
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var exception;
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try {
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event.bubbles = true;
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} catch (e) {
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exception = e;
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}
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if (!(exception instanceof TypeError)) {
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throw exception;
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}
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switch (event.data) {
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case "no-op":
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break;
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case "components":
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postMessage(Components.toString());
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break;
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case "start":
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for (var i = 0; i < 1000; i++) {}
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postMessage("started");
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break;
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case "stop":
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self.postMessage("no-op");
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postMessage("stopped");
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self.removeEventListener("message", messageListener);
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break;
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default:
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throw "Bad message: " + event.data;
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}
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}
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if (!("DedicatedWorkerGlobalScope" in self)) {
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throw new Error("DedicatedWorkerGlobalScope should be visible!");
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}
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if (!(self instanceof DedicatedWorkerGlobalScope)) {
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throw new Error("The global should be a SharedWorkerGlobalScope!");
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}
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if (!(self instanceof WorkerGlobalScope)) {
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throw new Error("The global should be a WorkerGlobalScope!");
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}
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if ("SharedWorkerGlobalScope" in self) {
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throw new Error("SharedWorkerGlobalScope should not be visible!");
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}
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addEventListener("message", { handleEvent: messageListener });
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