94 lines
2.7 KiB
Swift
94 lines
2.7 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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import SignalCoreKit
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import SessionUtilitiesKit
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@objc
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public protocol OWSProximityMonitoringManager: AnyObject {
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func add(lifetime: AnyObject)
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func remove(lifetime: AnyObject)
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}
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@objc
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public class OWSProximityMonitoringManagerImpl: NSObject, OWSProximityMonitoringManager {
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var lifetimes: [Weak<AnyObject>] = []
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public override init() {
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super.init()
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AppReadiness.runNowOrWhenAppWillBecomeReady {
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self.setup()
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}
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}
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// MARK:
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var device: UIDevice {
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return UIDevice.current
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}
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// MARK:
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@objc
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public func add(lifetime: AnyObject) {
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objc_sync_enter(self)
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if !lifetimes.contains(where: { $0.value === lifetime }) {
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lifetimes.append(Weak(value: lifetime))
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}
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reconcile()
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objc_sync_exit(self)
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}
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@objc
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public func remove(lifetime: AnyObject) {
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objc_sync_enter(self)
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lifetimes = lifetimes.filter { $0.value !== lifetime }
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reconcile()
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objc_sync_exit(self)
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}
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@objc
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public func setup() {
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NotificationCenter.default.addObserver(self, selector: #selector(proximitySensorStateDidChange(notification:)), name: UIDevice.proximityStateDidChangeNotification, object: nil)
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}
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@objc
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func proximitySensorStateDidChange(notification: Notification) {
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Logger.debug("")
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// This is crazy, but if we disable `device.isProximityMonitoringEnabled` while
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// `device.proximityState` is true (while the device is held to the ear)
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// then `device.proximityState` remains true, even after we bring the phone
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// away from the ear and re-enable monitoring.
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//
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// To resolve this, we wait to disable proximity monitoring until `proximityState`
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// is false.
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if self.device.proximityState {
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self.add(lifetime: self)
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} else {
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self.remove(lifetime: self)
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}
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}
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func reconcile() {
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lifetimes = lifetimes.filter { $0.value != nil }
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if lifetimes.isEmpty {
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DispatchQueue.main.async {
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Logger.debug("disabling proximity monitoring")
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self.device.isProximityMonitoringEnabled = false
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}
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} else {
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let lifetimes = self.lifetimes
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DispatchQueue.main.async {
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Logger.debug("willEnable proximity monitoring for lifetimes: \(lifetimes), proximityState: \(self.device.proximityState)")
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self.device.isProximityMonitoringEnabled = true
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Logger.debug("didEnable proximity monitoring for lifetimes: \(lifetimes), proximityState: \(self.device.proximityState)")
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}
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}
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}
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}
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