62 lines
2.1 KiB
Swift
62 lines
2.1 KiB
Swift
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// UIAlertControllerExtensions.swift
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// CapFinder
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//
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// Created by User on 23.03.18.
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// Copyright © 2018 User. All rights reserved.
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//
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import Foundation
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import UIKit
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extension UIAlertController {
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private struct AssociatedKeys {
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static var blurStyleKey = "UIAlertController.blurStyleKey"
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}
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public var blurStyle: UIBlurEffect.Style {
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get {
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return objc_getAssociatedObject(self, &AssociatedKeys.blurStyleKey) as? UIBlurEffect.Style ?? .extraLight
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} set (style) {
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objc_setAssociatedObject(self, &AssociatedKeys.blurStyleKey, style, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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view.setNeedsLayout()
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view.layoutIfNeeded()
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}
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}
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public var cancelButtonColor: UIColor? {
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return blurStyle == .dark ? UIColor(red: 28.0/255.0, green: 28.0/255.0, blue: 28.0/255.0, alpha: 1.0) : nil
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}
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private var visualEffectView: UIVisualEffectView? {
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if let presentationController = presentationController, presentationController.responds(to: Selector(("popoverView"))), let view = presentationController.value(forKey: "popoverView") as? UIView // We're on an iPad and visual effect view is in a different place.
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{
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return view.recursiveSubviews.compactMap({$0 as? UIVisualEffectView}).first
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}
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return view.recursiveSubviews.compactMap({$0 as? UIVisualEffectView}).first
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}
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private var cancelActionView: UIView? {
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return view.recursiveSubviews.compactMap({
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$0 as? UILabel}
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).first(where: {
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$0.text == actions.first(where: { $0.style == .cancel })?.title
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})?.superview?.superview
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}
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public convenience init(title: String?, message: String?, preferredStyle: UIAlertController.Style, blurStyle: UIBlurEffect.Style) {
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self.init(title: title, message: message, preferredStyle: preferredStyle)
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self.blurStyle = blurStyle
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}
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open override func viewWillLayoutSubviews() {
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super.viewWillLayoutSubviews()
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visualEffectView?.effect = UIBlurEffect(style: blurStyle)
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cancelActionView?.backgroundColor = cancelButtonColor
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}
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}
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