toolkit/modules/Timer.jsm

branch
TOR_BUG_9701
changeset 15
b8a032363ba2
equal deleted inserted replaced
-1:000000000000 0:062b63098c07
1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5 "use strict";
6
7 /**
8 * JS module implementation of nsIDOMJSWindow.setTimeout and clearTimeout.
9 */
10
11 this.EXPORTED_SYMBOLS = ["setTimeout", "clearTimeout"];
12
13 const Cc = Components.classes;
14 const Ci = Components.interfaces;
15 const Cu = Components.utils;
16
17 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
18
19 // This gives us >=2^30 unique timer IDs, enough for 1 per ms for 12.4 days.
20 let gNextTimeoutId = 1; // setTimeout must return a positive integer
21
22 let gTimeoutTable = new Map(); // int -> nsITimer
23
24 this.setTimeout = function setTimeout(aCallback, aMilliseconds) {
25 let id = gNextTimeoutId++;
26 let args = Array.slice(arguments, 2);
27 let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
28 timer.initWithCallback(function setTimeout_timer() {
29 gTimeoutTable.delete(id);
30 aCallback.apply(null, args);
31 }, aMilliseconds, timer.TYPE_ONE_SHOT);
32
33 gTimeoutTable.set(id, timer);
34 return id;
35 }
36
37 this.clearTimeout = function clearTimeout(aId) {
38 if (gTimeoutTable.has(aId)) {
39 gTimeoutTable.get(aId).cancel();
40 gTimeoutTable.delete(aId);
41 }
42 }

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