summaryrefslogtreecommitdiffstats
path: root/toolkit/components/extensions/parent/ext-alarms.js
diff options
context:
space:
mode:
Diffstat (limited to 'toolkit/components/extensions/parent/ext-alarms.js')
-rw-r--r--toolkit/components/extensions/parent/ext-alarms.js161
1 files changed, 161 insertions, 0 deletions
diff --git a/toolkit/components/extensions/parent/ext-alarms.js b/toolkit/components/extensions/parent/ext-alarms.js
new file mode 100644
index 0000000000..1eea8397e2
--- /dev/null
+++ b/toolkit/components/extensions/parent/ext-alarms.js
@@ -0,0 +1,161 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+// The ext-* files are imported into the same scopes.
+/* import-globals-from ext-toolkit.js */
+
+// Manages an alarm created by the extension (alarms API).
+class Alarm {
+ constructor(api, name, alarmInfo) {
+ this.api = api;
+ this.name = name;
+ this.when = alarmInfo.when;
+ this.delayInMinutes = alarmInfo.delayInMinutes;
+ this.periodInMinutes = alarmInfo.periodInMinutes;
+ this.canceled = false;
+
+ let delay, scheduledTime;
+ if (this.when) {
+ scheduledTime = this.when;
+ delay = this.when - Date.now();
+ } else {
+ if (!this.delayInMinutes) {
+ this.delayInMinutes = this.periodInMinutes;
+ }
+ delay = this.delayInMinutes * 60 * 1000;
+ scheduledTime = Date.now() + delay;
+ }
+
+ this.scheduledTime = scheduledTime;
+
+ let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+ delay = delay > 0 ? delay : 0;
+ timer.init(this, delay, Ci.nsITimer.TYPE_ONE_SHOT);
+ this.timer = timer;
+ }
+
+ clear() {
+ this.timer.cancel();
+ this.api.alarms.delete(this.name);
+ this.canceled = true;
+ }
+
+ observe(subject, topic, data) {
+ if (this.canceled) {
+ return;
+ }
+
+ for (let callback of this.api.callbacks) {
+ callback(this);
+ }
+
+ if (!this.periodInMinutes) {
+ this.clear();
+ return;
+ }
+
+ let delay = this.periodInMinutes * 60 * 1000;
+ this.scheduledTime = Date.now() + delay;
+ this.timer.init(this, delay, Ci.nsITimer.TYPE_ONE_SHOT);
+ }
+
+ get data() {
+ return {
+ name: this.name,
+ scheduledTime: this.scheduledTime,
+ periodInMinutes: this.periodInMinutes,
+ };
+ }
+}
+
+this.alarms = class extends ExtensionAPIPersistent {
+ constructor(extension) {
+ super(extension);
+
+ this.alarms = new Map();
+ this.callbacks = new Set();
+ }
+
+ onShutdown() {
+ for (let alarm of this.alarms.values()) {
+ alarm.clear();
+ }
+ }
+
+ PERSISTENT_EVENTS = {
+ onAlarm({ fire }) {
+ let callback = alarm => {
+ fire.sync(alarm.data);
+ };
+
+ this.callbacks.add(callback);
+
+ return {
+ unregister: () => {
+ this.callbacks.delete(callback);
+ },
+ convert(_fire, context) {
+ fire = _fire;
+ },
+ };
+ },
+ };
+
+ getAPI(context) {
+ const self = this;
+
+ return {
+ alarms: {
+ create: function (name, alarmInfo) {
+ name = name || "";
+ if (self.alarms.has(name)) {
+ self.alarms.get(name).clear();
+ }
+ let alarm = new Alarm(self, name, alarmInfo);
+ self.alarms.set(alarm.name, alarm);
+ },
+
+ get: function (name) {
+ name = name || "";
+ if (self.alarms.has(name)) {
+ return Promise.resolve(self.alarms.get(name).data);
+ }
+ return Promise.resolve();
+ },
+
+ getAll: function () {
+ let result = Array.from(self.alarms.values(), alarm => alarm.data);
+ return Promise.resolve(result);
+ },
+
+ clear: function (name) {
+ name = name || "";
+ if (self.alarms.has(name)) {
+ self.alarms.get(name).clear();
+ return Promise.resolve(true);
+ }
+ return Promise.resolve(false);
+ },
+
+ clearAll: function () {
+ let cleared = false;
+ for (let alarm of self.alarms.values()) {
+ alarm.clear();
+ cleared = true;
+ }
+ return Promise.resolve(cleared);
+ },
+
+ onAlarm: new EventManager({
+ context,
+ module: "alarms",
+ event: "onAlarm",
+ extensionApi: self,
+ }).api(),
+ },
+ };
+ }
+};