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      1 /**
      2  * Copyright (c) 2011 The Chromium Authors. All rights reserved.
      3  * Use of this source code is governed by a BSD-style license that can be
      4  * found in the LICENSE file.
      5  */
      6 
      7 var a1Timer = null;
      8 var a2Timer = null;
      9 var port = null;
     10 var iconFlashTimer = null;
     11 
     12 var HOUR_MS = 1000 * 60 * 60;
     13 
     14 // Override from common.js
     15 window.stopFlashingIcon = function() {
     16   window.clearTimeout(iconFlashTimer);
     17   chrome.browserAction.setIcon({'path': 'clock-19.png'});
     18 };
     19 
     20 // Override from common.js
     21 window.flashIcon = function() {
     22   var flashes = 10;
     23   function flash() {
     24     if (flashes == 0) {
     25       stopFlashingIcon();
     26       return;
     27     }
     28 
     29     if (flashes % 2 == 0) {
     30       chrome.browserAction.setIcon({'path': 'clock-highlighted-19.png'});
     31     } else {
     32       chrome.browserAction.setIcon({'path': 'clock-19.png'});
     33     }
     34     flashes--;
     35     iconFlashTimer = window.setTimeout(flash, 500);
     36   }
     37   flash();
     38 };
     39 
     40 function setTimer(alarmHours, alarmMinutes) {
     41   var alarmTime = (alarmHours * 60 + alarmMinutes) * 60 * 1000;
     42   var d = new Date();
     43   var now = d.getHours() * HOUR_MS +
     44             d.getMinutes() * 60 * 1000 +
     45             d.getSeconds() * 1000;
     46   var delta = (alarmTime - now);
     47 
     48   if (delta >= -5000 && delta < 1000) {
     49     ringAlarm(alarmHours, alarmMinutes);
     50     if (port) {
     51       port.postMessage({'cmd': 'anim'});
     52     }
     53     return null;
     54   }
     55 
     56   if (delta < 0) {
     57     delta += HOUR_MS * 24;
     58   }
     59   if (delta >= 1000) {
     60     if (delta > HOUR_MS) {
     61       delta = HOUR_MS;
     62     }
     63     console.log('Timer set for ' + delta + ' ms');
     64     return window.setTimeout(resetTimers, delta);
     65   }
     66 
     67   return null;
     68 };
     69 
     70 function resetTimers() {
     71   if (a1Timer) {
     72     window.clearTimeout(a1Timer);
     73   }
     74 
     75   try {
     76     var a1_on = (localStorage['a1_on'] == 'true');
     77     var a1_tt = localStorage['a1_tt'] || DEFAULT_A1_TT;
     78     var a1_ampm = localStorage['a1_ampm'] || DEFAULT_A1_AMPM;
     79     if (a1_on) {
     80       var alarmHoursMinutes = parseTime(a1_tt, a1_ampm);
     81       var alarmHours = alarmHoursMinutes[0];
     82       var alarmMinutes = alarmHoursMinutes[1];
     83       a1Timer = setTimer(alarmHours, alarmMinutes);
     84     }
     85   } catch (e) {
     86     console.log(e);
     87   }
     88 
     89   try {
     90     var a2_on = (localStorage['a2_on'] == 'true');
     91     var a2_tt = localStorage['a2_tt'] || DEFAULT_A2_TT;
     92     var a2_ampm = localStorage['a2_ampm'] || DEFAULT_A2_AMPM;
     93     if (a2_on) {
     94       var alarmHoursMinutes = parseTime(a2_tt, a2_ampm);
     95       var alarmHours = alarmHoursMinutes[0];
     96       var alarmMinutes = alarmHoursMinutes[1];
     97       a2Timer = setTimer(alarmHours, alarmMinutes);
     98     }
     99   } catch (e) {
    100     console.log(e);
    101   }
    102 
    103   if (a1_on || a2_on) {
    104     chrome.browserAction.setIcon({'path': 'clock-19.png'});
    105   } else {
    106     chrome.browserAction.setIcon({'path': 'clock-disabled-19.png'});
    107   }
    108 }
    109 
    110 function onLocalStorageChange() {
    111   resetTimers();
    112 }
    113 
    114 function initBackground() {
    115   window.addEventListener('storage', onLocalStorageChange, false);
    116 
    117   chrome.runtime.onConnect.addListener(function(popupPort) {
    118     port = popupPort;
    119     port.onDisconnect.addListener(function() {
    120       port = null;
    121     });
    122   });
    123 }
    124 
    125 initBackground();
    126 resetTimers();
    127