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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
import Foundation
import UIKit
private typealias GleanBaseline = GleanMetrics.GleanBaseline
class GleanLifecycleObserver {
init() {
NotificationCenter.default.addObserver(
self,
selector: #selector(GleanLifecycleObserver.appWillEnterForeground(notification:)),
name: UIApplication.willEnterForegroundNotification,
object: nil
)
NotificationCenter.default.addObserver(
self,
selector: #selector(GleanLifecycleObserver.appDidEnterBackground(notification:)),
name: UIApplication.didEnterBackgroundNotification,
object: nil
)
// We handle init the same as an foreground event,
// as we won't get the enter-foreground notification.
Glean.shared.handleForegroundEvent()
}
@objc func appWillEnterForeground(notification _: NSNotification) {
// Note that this is sending the length of the last foreground session
// because it belongs to the baseline ping and that ping is sent every
// time the app goes to background.
Glean.shared.handleForegroundEvent()
}
@objc func appDidEnterBackground(notification _: NSNotification) {
Glean.shared.handleBackgroundEvent()
}
}