Antidote/Antidote/UIAlertControllerExtension.swift
2024-02-22 21:43:11 +02:00

64 lines
2.1 KiB
Swift

// 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/.
import UIKit
extension UIAlertController {
class func showErrorWithMessage(_ message: String, retryBlock: (() -> Void)?) {
showWithTitle(String(localized: "error_title"), message: message, retryBlock: retryBlock)
}
class func showWithTitle(_ title: String, message: String? = nil, retryBlock: (() -> Void)?) {
let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
if let retryBlock = retryBlock {
alert.addAction(UIAlertAction(title: String(localized: "error_retry_button"), style: .default) { _ in
retryBlock()
})
alert.addAction(UIAlertAction(title: String(localized: "alert_cancel"), style: .cancel, handler: nil))
}
else {
alert.addAction(UIAlertAction(title: String(localized: "error_ok_button"), style: .cancel, handler: nil))
}
guard let visible = visibleViewController() else {
return
}
visible.present(alert, animated: true, completion: nil)
}
fileprivate class func visibleViewController(_ rootViewController: UIViewController? = nil) -> UIViewController? {
var root: UIViewController
if let rootViewController = rootViewController {
root = rootViewController
}
else {
let appDelegate = UIApplication.shared.delegate as? AppDelegate
guard let controller = appDelegate?.window?.rootViewController else {
return nil
}
root = controller
}
guard let presented = root.presentedViewController else {
return root
}
if let navigation = presented as? UINavigationController {
return visibleViewController(navigation.topViewController)
}
if let tabBar = presented as? UITabBarController {
return visibleViewController(tabBar.selectedViewController)
}
return presented
}
}