jonkykong
117 lines
3.2 KiB
Swift
117 lines
3.2 KiB
Swift
//
|
|
// Extensions.swift
|
|
// Pods-Example
|
|
//
|
|
// Created by Jon Kent on 7/1/19.
|
|
//
|
|
|
|
import UIKit
|
|
|
|
extension NSObject: InitializableClass {}
|
|
|
|
internal extension UIView {
|
|
|
|
@discardableResult func untransformed(_ block: () -> CGFloat) -> CGFloat {
|
|
let t = transform
|
|
transform = .identity
|
|
let value = block()
|
|
transform = t
|
|
return value
|
|
}
|
|
|
|
func bringToFront() {
|
|
superview?.bringSubviewToFront(self)
|
|
}
|
|
|
|
func untransform(_ block: () -> Void) {
|
|
untransformed { () -> CGFloat in
|
|
block()
|
|
return 0
|
|
}
|
|
}
|
|
|
|
static func animationsEnabled(_ enabled: Bool = true, _ block: () -> Void) {
|
|
let a = areAnimationsEnabled
|
|
setAnimationsEnabled(enabled)
|
|
block()
|
|
setAnimationsEnabled(a)
|
|
}
|
|
}
|
|
|
|
internal extension UIViewController {
|
|
|
|
// View controller actively displayed in that layer. It may not be visible if it's presenting another view controller.
|
|
var activeViewController: UIViewController {
|
|
switch self {
|
|
case let navigationController as UINavigationController:
|
|
return navigationController.topViewController?.activeViewController ?? self
|
|
case let tabBarController as UITabBarController:
|
|
return tabBarController.selectedViewController?.activeViewController ?? self
|
|
case let splitViewController as UISplitViewController:
|
|
return splitViewController.viewControllers.last?.activeViewController ?? self
|
|
default:
|
|
return self
|
|
}
|
|
}
|
|
|
|
// View controller being displayed on screen to the user.
|
|
var topMostViewController: UIViewController {
|
|
let activeViewController = self.activeViewController
|
|
return activeViewController.presentedViewController?.topMostViewController ?? activeViewController
|
|
}
|
|
|
|
var containerViewController: UIViewController {
|
|
return navigationController?.containerViewController ??
|
|
tabBarController?.containerViewController ??
|
|
splitViewController?.containerViewController ??
|
|
self
|
|
}
|
|
|
|
@objc var isHidden: Bool {
|
|
return presentingViewController == nil
|
|
}
|
|
}
|
|
|
|
internal extension UIGestureRecognizer {
|
|
|
|
convenience init(addTo view: UIView, target: Any, action: Selector) {
|
|
self.init(target: target, action: action)
|
|
view.addGestureRecognizer(self)
|
|
}
|
|
|
|
convenience init?(addTo view: UIView?, target: Any, action: Selector) {
|
|
guard let view = view else { return nil }
|
|
self.init(addTo: view, target: target, action: action)
|
|
}
|
|
|
|
func remove() {
|
|
view?.removeGestureRecognizer(self)
|
|
}
|
|
}
|
|
|
|
internal extension UIPanGestureRecognizer {
|
|
|
|
var canSwitch: Bool {
|
|
return !(self is UIScreenEdgePanGestureRecognizer)
|
|
}
|
|
|
|
var xTranslation: CGFloat {
|
|
return view?.untransformed {
|
|
return self.translation(in: view).x
|
|
} ?? 0
|
|
}
|
|
|
|
var xVelocity: CGFloat {
|
|
return view?.untransformed {
|
|
return self.velocity(in: view).x
|
|
} ?? 0
|
|
}
|
|
}
|
|
|
|
internal extension UIApplication {
|
|
|
|
var keyWindow: UIWindow? {
|
|
return UIApplication.shared.windows.filter { $0.isKeyWindow }.first
|
|
}
|
|
}
|