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/* 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/. */
var EXPORTED_SYMBOLS = ["CalAlarmMonitor"];
var { cal } = ChromeUtils.import("resource:///modules/calendar/calUtils.jsm");
const lazy = {};
ChromeUtils.defineModuleGetter(lazy, "CalEvent", "resource:///modules/CalEvent.jsm");
function peekAlarmWindow() {
return Services.wm.getMostRecentWindow("Calendar:AlarmWindow");
}
/**
* The alarm monitor takes care of playing the alarm sound and opening one copy
* of the calendar-alarm-dialog. Both depend on their respective prefs to be
* set. This monitor is only used for DISPLAY type alarms.
*/
function CalAlarmMonitor() {
this.wrappedJSObject = this;
this.mAlarms = [];
// A map from itemId to item.
this._notifyingItems = new Map();
this.mSound = Cc["@mozilla.org/sound;1"].createInstance(Ci.nsISound);
Services.obs.addObserver(this, "alarm-service-startup");
Services.obs.addObserver(this, "alarm-service-shutdown");
}
var calAlarmMonitorClassID = Components.ID("{4b7ae030-ed79-11d9-8cd6-0800200c9a66}");
var calAlarmMonitorInterfaces = [Ci.nsIObserver, Ci.calIAlarmServiceObserver];
CalAlarmMonitor.prototype = {
mAlarms: null,
// This is a work-around for the fact that there is a delay between when
// we call openWindow and when it appears via getMostRecentWindow. If an
// alarm is fired in that time-frame, it will actually end up in another window.
mWindowOpening: null,
// nsISound instance used for playing all sounds
mSound: null,
classID: calAlarmMonitorClassID,
QueryInterface: cal.generateQI(["nsIObserver", "calIAlarmServiceObserver"]),
classInfo: cal.generateCI({
contractID: "@mozilla.org/calendar/alarm-monitor;1",
classDescription: "Calendar Alarm Monitor",
classID: calAlarmMonitorClassID,
interfaces: calAlarmMonitorInterfaces,
flags: Ci.nsIClassInfo.SINGLETON,
}),
/**
* nsIObserver
*/
observe(aSubject, aTopic, aData) {
let alarmService = Cc["@mozilla.org/calendar/alarm-service;1"].getService(Ci.calIAlarmService);
switch (aTopic) {
case "alarm-service-startup":
alarmService.addObserver(this);
break;
case "alarm-service-shutdown":
alarmService.removeObserver(this);
break;
case "alertclickcallback": {
let item = this._notifyingItems.get(aData);
if (item) {
let calWindow = cal.window.getCalendarWindow();
if (calWindow) {
calWindow.openEventDialogForViewing(item, true);
}
}
break;
}
case "alertfinished":
this._notifyingItems.delete(aData);
break;
}
},
/**
* calIAlarmServiceObserver
*/
onAlarm(aItem, aAlarm) {
if (aAlarm.action != "DISPLAY") {
// This monitor only looks for DISPLAY alarms.
return;
}
this.mAlarms.push([aItem, aAlarm]);
if (Services.prefs.getBoolPref("calendar.alarms.playsound", true)) {
// We want to make sure the user isn't flooded with alarms so we
// limit this using a preference. For example, if the user has 20
// events that fire an alarm in the same minute, then the alarm
// sound will only play 5 times. All alarms will be shown in the
// dialog nevertheless.
let maxAlarmSoundCount = Services.prefs.getIntPref("calendar.alarms.maxsoundsperminute", 5);
let now = new Date();
if (!this.mLastAlarmSoundDate || now - this.mLastAlarmSoundDate >= 60000) {
// Last alarm was long enough ago, reset counters. Note
// subtracting JSDate results in microseconds.
this.mAlarmSoundCount = 0;
this.mLastAlarmSoundDate = now;
} else {
// Otherwise increase the counter
this.mAlarmSoundCount++;
}
if (maxAlarmSoundCount > this.mAlarmSoundCount) {
// Only ring the alarm sound if we haven't hit the max count.
try {
let soundURL;
if (Services.prefs.getIntPref("calendar.alarms.soundType", 0) == 0) {
soundURL = "chrome://calendar/content/sound.wav";
} else {
soundURL = Services.prefs.getStringPref("calendar.alarms.soundURL", null);
}
if (soundURL && soundURL.length > 0) {
soundURL = Services.io.newURI(soundURL);
this.mSound.play(soundURL);
} else {
this.mSound.beep();
}
} catch (exc) {
cal.ERROR("Error playing alarm sound: " + exc);
}
}
}
if (!Services.prefs.getBoolPref("calendar.alarms.show", true)) {
return;
}
let calAlarmWindow = peekAlarmWindow();
if (!calAlarmWindow && (!this.mWindowOpening || this.mWindowOpening.closed)) {
this.mWindowOpening = Services.ww.openWindow(
null,
"chrome://calendar/content/calendar-alarm-dialog.xhtml",
"_blank",
"chrome,dialog=yes,all,resizable",
this
);
}
if (!this.mWindowOpening) {
calAlarmWindow.addWidgetFor(aItem, aAlarm);
}
},
/**
* @see {calIAlarmServiceObserver}
* @param {calIItemBase} item - The item to notify about.
*/
onNotification(item) {
// Don't notify about canceled events.
if (item.status == "CANCELLED") {
return;
}
// Don't notify if you declined this event invitation.
if (
(item instanceof lazy.CalEvent || item instanceof Ci.calIEvent) &&
item.calendar instanceof Ci.calISchedulingSupport &&
item.calendar.isInvitation(item) &&
item.calendar.getInvitedAttendee(item)?.participationStatus == "DECLINED"
) {
return;
}
let alert = Cc["@mozilla.org/alert-notification;1"].createInstance(Ci.nsIAlertNotification);
let alertsService = Cc["@mozilla.org/alerts-service;1"].getService(Ci.nsIAlertsService);
alert.init(
item.id, // name
"chrome://messenger/skin/icons/new-mail-alert.png",
item.title,
item.getProperty("description"),
true, // clickable
item.id // cookie
);
this._notifyingItems.set(item.id, item);
alertsService.showAlert(alert, this);
},
window_onLoad() {
let calAlarmWindow = this.mWindowOpening;
this.mWindowOpening = null;
if (this.mAlarms.length > 0) {
for (let [item, alarm] of this.mAlarms) {
calAlarmWindow.addWidgetFor(item, alarm);
}
} else {
// Uh oh, it seems the alarms were removed even before the window
// finished loading. Looks like we can close it again
calAlarmWindow.closeIfEmpty();
}
},
onRemoveAlarmsByItem(aItem) {
let calAlarmWindow = peekAlarmWindow();
this.mAlarms = this.mAlarms.filter(([thisItem, alarm]) => {
let ret = aItem.hashId != thisItem.hashId;
if (!ret && calAlarmWindow) {
// window is open
calAlarmWindow.removeWidgetFor(thisItem, alarm);
}
return ret;
});
},
onRemoveAlarmsByCalendar(calendar) {
let calAlarmWindow = peekAlarmWindow();
this.mAlarms = this.mAlarms.filter(([thisItem, alarm]) => {
let ret = calendar.id != thisItem.calendar.id;
if (!ret && calAlarmWindow) {
// window is open
calAlarmWindow.removeWidgetFor(thisItem, alarm);
}
return ret;
});
},
onAlarmsLoaded(aCalendar) {
// the alarm dialog won't close while alarms are loading, check again now
let calAlarmWindow = peekAlarmWindow();
if (calAlarmWindow && this.mAlarms.length == 0) {
calAlarmWindow.closeIfEmpty();
}
},
};
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