dterekhov’s gists

dterekhov / URLOpeningUtil.swift

Created November 13, 2025 09:21

URLOpeningUtil: Correctly opens phone, email URLs in the app #uikit #swift-api #real-project

	import UIKit
	import MessageUI

	public final class URLOpeningUtil: NSObject, Sendable {
	// MARK: - Validation
	public enum RegularExpressions: String {
	// swiftlint:disable line_length
	case phone = "^\\s(?:\\+?(\\d{1,3}))?([-. (](\\d{3})[-. )])?((\\d{3})[-. ](\\d{2,4})(?:[-.x ](\\d+))?)\\s$"
	case email = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
	// swiftlint:enable line_length

dterekhov / InvalidFieldDetector.swift

Created November 13, 2025 09:19

InvalidFieldDetector: Detects what the field is invalid/empty, scrolls to it and shakes #uikit #swift-api #real-project

	import Foundation
	import UIKit

	public class InvalidFieldDetector {
	public static func isNumeric(string: String) -> Bool {
	let nums: Set<Character> = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]
	return Set(string).isSubset(of: nums)
	}

	public static func isValidEmail(email: String) -> Bool {

dterekhov / UIViewController+Embed.swift

Created November 13, 2025 09:17

UIViewController+Embed: Embeds a newly created view controller of the given type into a container view #uikit #swift-api #real-project

	import UIKit

	extension UIViewController {
	/// Embeds a newly created view controller of the given type into a container view.
	/// - Parameters:
	/// - vcType: The type of the view controller to embed.
	/// - containerView: The container view that will hold the embedded view.
	/// - setup: Optional configuration closure executed after the view is added.
	public func fw_initEmbedVC(ofType vcType: UIViewController.Type,
	inside containerView: UIView,

dterekhov / UIView+Border.swift

Created November 13, 2025 09:16

UIView+Border: Access to the UIView’s border to mange its width, color, type #uikit #swift-api #real-project

	import UIKit

	@IBDesignable extension UIView {
	@IBInspectable var borderColor: UIColor? {
	set { layer.borderColor = newValue?.cgColor }
	get { return layer.borderColor == nil ? nil : UIColor(cgColor: layer.borderColor!) }
	}
	}

	extension UIView {

dterekhov / UITableViewCell+UITableViewAccess.swift

Created November 13, 2025 09:14

UITableViewCell+UITableViewAccess: An easy access to the parent UITableView from its UITableViewCell #uikit #swift-api #real-project

	import UIKit

	extension UITableViewCell {
	/// Search up the view hierarchy of the table view cell to find the containing table view
	public var fw_tableView: UITableView? {
	var table: UIView? = superview
	while !(table is UITableView) && table != nil {
	table = table?.superview
	}
	return table as? UITableView

dterekhov / UITableViewCell+ClearButton.swift

Created November 13, 2025 09:13

UITableViewCell+ClearButton: Adds clear data button to the cell #uikit #swift-api #real-project

	import UIKit

	extension UITableViewCell {
	// MARK: - Public API
	public var fw_onClearButtonTap: (() -> Void)? {
	get { return objc_getAssociatedObject(self, AssociatedKeys.onClearButtonTap) as? () -> Void }
	set {
	objc_setAssociatedObject(self,
	AssociatedKeys.onClearButtonTap,
	newValue,

dterekhov / UITableView+EmptyData.swift

Created November 13, 2025 09:09

UITableView+EmptyData: Placehoder for UITableView on no data state #uikit #swift-api #real-project

	import UIKit

	extension UITableView {
	// MARK: - Public API
	public func fw_setPlaceholder
	(text: String?,
	fontSize: CGFloat = 21,
	image: UIImage?,
	edgeInsets: UIEdgeInsets = UIEdgeInsets(top: 0, left: 8, bottom: 0, right: 8)) {
	let stackView = fw_placeholderStackView()

dterekhov / String+PercentEncodingFormatting.swift

Created November 13, 2025 09:08

String+PercentEncodingFormatting: Format a string in a way to use correctly for URLQueryItem #utility #swift-api #real-project

	import Foundation

	extension String {
	// Encoding for x-www-form-urlencoded
	// https://useyourloaf.com/blog/how-to-percent-encode-a-url-string/
	public func addingPercentEncodingForFormData(plusForSpace: Bool = true) -> String? {
	let unreserved = "*-._,"
	var allowed = CharacterSet.alphanumerics
	allowed.insert(charactersIn: unreserved)
	if plusForSpace { allowed.insert(charactersIn: " ") }

dterekhov / PaddingLabel.swift

Created November 13, 2025 09:05

PaddingLabel: Simple adding insest for UILabel #uikit #swift-api #real-project

	import UIKit

	@IBDesignable public class PaddingLabel: UILabel {
	// MARK: - Members
	@IBInspectable public var topInset: CGFloat = 0.0
	@IBInspectable public var bottomInset: CGFloat = 0.0
	@IBInspectable public var leftInset: CGFloat = 0.0
	@IBInspectable public var rightInset: CGFloat = 0.0

	// MARK: - Lifecycle

dterekhov / KeyedCodingContainer+UIImage.swift

Created November 13, 2025 09:04

KeyedCodingContainer+UIImage: UImage support for KeyedEncodingContainer #uikit #persistence #swift-api #real-project

	import UIKit.UIImage

	public enum ImageEncodingQuality: CGFloat {
	case png = 0
	case jpegLow = 0.2
	case jpegMid = 0.5
	case jpegHigh = 0.75
	}

	public extension KeyedEncodingContainer {

Dmitry Terekhov dterekhov