michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: "use strict";
michael@0: 
michael@0: /**
michael@0:  * JS module implementation of nsIDOMJSWindow.setTimeout and clearTimeout.
michael@0:  */
michael@0: 
michael@0: this.EXPORTED_SYMBOLS = ["setTimeout", "clearTimeout"];
michael@0: 
michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: const Cu = Components.utils;
michael@0: 
michael@0: Cu.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0: 
michael@0: // This gives us >=2^30 unique timer IDs, enough for 1 per ms for 12.4 days.
michael@0: let gNextTimeoutId = 1; // setTimeout must return a positive integer
michael@0: 
michael@0: let gTimeoutTable = new Map(); // int -> nsITimer
michael@0: 
michael@0: this.setTimeout = function setTimeout(aCallback, aMilliseconds) {
michael@0:   let id = gNextTimeoutId++;
michael@0:   let args = Array.slice(arguments, 2);
michael@0:   let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
michael@0:   timer.initWithCallback(function setTimeout_timer() {
michael@0:     gTimeoutTable.delete(id);
michael@0:     aCallback.apply(null, args);
michael@0:   }, aMilliseconds, timer.TYPE_ONE_SHOT);
michael@0: 
michael@0:   gTimeoutTable.set(id, timer);
michael@0:   return id;
michael@0: }
michael@0: 
michael@0: this.clearTimeout = function clearTimeout(aId) {
michael@0:   if (gTimeoutTable.has(aId)) {
michael@0:     gTimeoutTable.get(aId).cancel();
michael@0:     gTimeoutTable.delete(aId);
michael@0:   }
michael@0: }