1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5/*
6  Displays a notification with the current time. Requires "notifications"
7  permission in the manifest file (or calling
8  "Notification.requestPermission" beforehand).
9*/
10function show() {
11  var time = /(..)(:..)/.exec(new Date());     // The prettyprinted time.
12  var hour = time[1] % 12 || 12;               // The prettyprinted hour.
13  var period = time[1] < 12 ? 'a.m.' : 'p.m.'; // The period of the day.
14  new Notification(hour + time[2] + ' ' + period, {
15    icon: '48.png',
16    body: 'Time to make the toast.'
17  });
18}
19
20// Conditionally initialize the options.
21if (!localStorage.isInitialized) {
22  localStorage.isActivated = true;   // The display activation.
23  localStorage.frequency = 1;        // The display frequency, in minutes.
24  localStorage.isInitialized = true; // The option initialization.
25}
26
27// Test for notification support.
28if (window.Notification) {
29  // While activated, show notifications at the display frequency.
30  if (JSON.parse(localStorage.isActivated)) { show(); }
31
32  var interval = 0; // The display interval, in minutes.
33
34  setInterval(function() {
35    interval++;
36
37    if (
38      JSON.parse(localStorage.isActivated) &&
39        localStorage.frequency <= interval
40    ) {
41      show();
42      interval = 0;
43    }
44  }, 60000);
45}
46