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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
/**
* Helper function to asynchronously call a certain method on the objects passed
* in 'services' in order (i.e wait until the first completes before calling the
* second
*
* @param method The method name to call. Usually startup/shutdown.
* @param services The array of service objects to call on.
*/
function callOrderedServices(method, services) {
const service = services.shift();
if (service) {
service[method]({
onResult() {
callOrderedServices(method, services);
},
});
}
}
export function CalStartupService() {
this.wrappedJSObject = this;
this.setupObservers();
}
CalStartupService.prototype = {
QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
classID: Components.ID("{2547331f-34c0-4a4b-b93c-b503538ba6d6}"),
// Startup Service Methods
/**
* Sets up the needed observers for noticing startup/shutdown
*/
setupObservers() {
Services.obs.addObserver(this, "profile-after-change");
Services.obs.addObserver(this, "profile-before-change");
Services.obs.addObserver(this, "xpcom-shutdown");
},
started: false,
/**
* Gets the startup order of services. This is an array of service objects
* that should be called in order at startup.
*
* @returns The startup order as an array.
*/
getStartupOrder() {
const self = this;
const tzService = Cc["@mozilla.org/calendar/timezone-service;1"]
.getService(Ci.calITimezoneService)
.QueryInterface(Ci.calIStartupService);
const calMgr = Cc["@mozilla.org/calendar/manager;1"]
.getService(Ci.calICalendarManager)
.QueryInterface(Ci.calIStartupService);
// Localization service
const locales = {
startup(aCompleteListener) {
const packaged = Services.locale.packagedLocales;
const fileSrc = new L10nFileSource(
"calendar",
"app",
packaged,
);
L10nRegistry.getInstance().registerSources([fileSrc]);
aCompleteListener.onResult(null, Cr.NS_OK);
},
shutdown(aCompleteListener) {
aCompleteListener.onResult(null, Cr.NS_OK);
},
};
// Notification object
const notify = {
startup(aCompleteListener) {
self.started = true;
Services.obs.notifyObservers(null, "calendar-startup-done");
aCompleteListener.onResult(null, Cr.NS_OK);
},
shutdown(aCompleteListener) {
// Argh, it would have all been so pretty! Since we just reverse
// the array, the shutdown notification would happen before the
// other shutdown calls. For lack of pretty code, I'm
// leaving this out! Users can still listen to xpcom-shutdown.
self.started = false;
aCompleteListener.onResult(null, Cr.NS_OK);
},
};
// We need to spin up the timezone service before the calendar manager
// to ensure we have the timezones initialized. Make sure "notify" is
// last in this array!
return [locales, tzService, calMgr, notify];
},
/**
* Observer notification callback
*/
observe(aSubject, aTopic) {
switch (aTopic) {
case "profile-after-change":
callOrderedServices("startup", this.getStartupOrder());
break;
case "profile-before-change":
callOrderedServices("shutdown", this.getStartupOrder().reverse());
break;
case "xpcom-shutdown":
Services.obs.removeObserver(this, "profile-after-change");
Services.obs.removeObserver(this, "profile-before-change");
Services.obs.removeObserver(this, "xpcom-shutdown");
break;
}
},
};