yattee/Vendor/RefreshControl/Extensions/UIView+Extensions.swift

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//
// UIView+Extensions.swift
// SwiftUI_Pull_to_Refresh
//
// Created by Geri Borbás on 19/09/2021.
//
import Foundation
import UIKit
extension UIView {
/// Returs frame in screen coordinates.
var globalFrame: CGRect {
if let window = window {
return convert(bounds, to: window.screen.coordinateSpace)
} else {
return .zero
}
}
/// Returns with all the instances of the given view type in the view hierarchy.
func viewsInHierarchy<ViewType: UIView>() -> [ViewType]? {
var views: [ViewType] = []
viewsInHierarchy(views: &views)
return views.isEmpty ? nil : views
}
private func viewsInHierarchy<ViewType: UIView>(views: inout [ViewType]) {
subviews.forEach { eachSubView in
if let matchingView = eachSubView as? ViewType {
views.append(matchingView)
}
eachSubView.viewsInHierarchy(views: &views)
}
}
/// Search ancestral view hierarcy for the given view type.
func searchViewAnchestorsFor<ViewType: UIView>(
_ onViewFound: (ViewType) -> Void
) {
if let matchingView = superview as? ViewType {
onViewFound(matchingView)
} else {
superview?.searchViewAnchestorsFor(onViewFound)
}
}
/// Search ancestral view hierarcy for the given view type.
func searchViewAnchestorsFor<ViewType: UIView>() -> ViewType? {
if let matchingView = superview as? ViewType {
return matchingView
} else {
return superview?.searchViewAnchestorsFor()
}
}
func printViewHierarchyInformation(_ level: Int = 0) {
printViewInformation(level)
subviews.forEach { $0.printViewHierarchyInformation(level + 1) }
}
func printViewInformation(_ level: Int) {
let leadingWhitespace = String(repeating: " ", count: level)
let className = "\(Self.self)"
let superclassName = "\(superclass!)"
let frame = "\(self.frame)"
let id = (accessibilityIdentifier == nil) ? "" : " `\(accessibilityIdentifier!)`"
print("\(leadingWhitespace)\(className): \(superclassName)\(id) \(frame)")
}
}