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44 lines
1.2 KiB
44 lines
1.2 KiB
6 years ago
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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/**
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* JS module implementation of nsIDOMJSWindow.setTimeout and clearTimeout.
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*/
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this.EXPORTED_SYMBOLS = ["setTimeout", "clearTimeout"];
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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// This gives us >=2^30 unique timer IDs, enough for 1 per ms for 12.4 days.
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let gNextTimeoutId = 1; // setTimeout must return a positive integer
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let gTimeoutTable = new Map(); // int -> nsITimer
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this.setTimeout = function setTimeout(aCallback, aMilliseconds) {
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let id = gNextTimeoutId++;
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let args = Array.slice(arguments, 2);
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let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
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timer.initWithCallback(function setTimeout_timer() {
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gTimeoutTable.delete(id);
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aCallback.apply(null, args);
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}, aMilliseconds, timer.TYPE_ONE_SHOT);
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gTimeoutTable.set(id, timer);
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return id;
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}
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this.clearTimeout = function clearTimeout(aId) {
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if (gTimeoutTable.has(aId)) {
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gTimeoutTable.get(aId).cancel();
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gTimeoutTable.delete(aId);
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}
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}
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