//
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// UITextFieldExtensions.swift
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// SwifterSwift
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//
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// Created by Omar Albeik on 8/5/16.
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// Copyright © 2016 SwifterSwift
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//
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#if canImport(UIKit) && !os(watchOS)
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import UIKit
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// MARK: - Enums
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public extension UITextField {
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/// SwifterSwift: UITextField text type.
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///
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/// - emailAddress: UITextField is used to enter email addresses.
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/// - password: UITextField is used to enter passwords.
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/// - generic: UITextField is used to enter generic text.
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enum TextType {
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/// SwifterSwift: UITextField is used to enter email addresses.
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case emailAddress
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/// SwifterSwift: UITextField is used to enter passwords.
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case password
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/// SwifterSwift: UITextField is used to enter generic text.
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case generic
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}
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}
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// MARK: - Properties
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public extension UITextField {
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/// SwifterSwift: Set textField for common text types.
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var textType: TextType {
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get {
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if keyboardType == .emailAddress {
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return .emailAddress
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} else if isSecureTextEntry {
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return .password
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}
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return .generic
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}
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set {
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switch newValue {
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case .emailAddress:
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keyboardType = .emailAddress
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autocorrectionType = .no
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autocapitalizationType = .none
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isSecureTextEntry = false
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placeholder = "Email Address"
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case .password:
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keyboardType = .asciiCapable
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autocorrectionType = .no
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autocapitalizationType = .none
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isSecureTextEntry = true
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placeholder = "Password"
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case .generic:
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isSecureTextEntry = false
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}
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}
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}
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/// SwifterSwift: Check if text field is empty.
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var isEmpty: Bool {
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return text?.isEmpty == true
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}
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/// SwifterSwift: Return text with no spaces or new lines in beginning and end.
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var trimmedText: String? {
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return text?.trimmingCharacters(in: .whitespacesAndNewlines)
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}
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/// SwifterSwift: Check if textFields text is a valid email format.
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///
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/// textField.text = "john@doe.com"
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/// textField.hasValidEmail -> true
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///
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/// textField.text = "swifterswift"
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/// textField.hasValidEmail -> false
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///
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var hasValidEmail: Bool {
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// http://stackoverflow.com/questions/25471114/how-to-validate-an-e-mail-address-in-swift
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return text!.range(of: "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}",
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options: String.CompareOptions.regularExpression,
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range: nil, locale: nil) != nil
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}
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/// SwifterSwift: Left view tint color.
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@IBInspectable var leftViewTintColor: UIColor? {
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get {
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guard let iconView = leftView as? UIImageView else { return nil }
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return iconView.tintColor
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}
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set {
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guard let iconView = leftView as? UIImageView else { return }
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iconView.image = iconView.image?.withRenderingMode(.alwaysTemplate)
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iconView.tintColor = newValue
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}
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}
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/// SwifterSwift: Right view tint color.
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@IBInspectable var rightViewTintColor: UIColor? {
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get {
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guard let iconView = rightView as? UIImageView else { return nil }
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return iconView.tintColor
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}
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set {
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guard let iconView = rightView as? UIImageView else { return }
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iconView.image = iconView.image?.withRenderingMode(.alwaysTemplate)
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iconView.tintColor = newValue
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}
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}
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}
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// MARK: - Methods
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public extension UITextField {
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/// SwifterSwift: Clear text.
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func clear() {
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text = ""
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attributedText = NSAttributedString(string: "")
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}
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/// SwifterSwift: Set placeholder text color.
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///
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/// - Parameter color: placeholder text color.
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func setPlaceHolderTextColor(_ color: UIColor) {
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guard let holder = placeholder, !holder.isEmpty else { return }
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attributedPlaceholder = NSAttributedString(string: holder, attributes: [.foregroundColor: color])
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}
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/// SwifterSwift: Add padding to the left of the textfield rect.
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///
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/// - Parameter padding: amount of padding to apply to the left of the textfield rect.
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func addPaddingLeft(_ padding: CGFloat) {
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let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: padding, height: frame.height))
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leftView = paddingView
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leftViewMode = .always
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}
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/// SwifterSwift: Add padding to the left of the textfield rect.
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///
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/// - Parameters:
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/// - image: left image
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/// - padding: amount of padding between icon and the left of textfield
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func addPaddingLeftIcon(_ image: UIImage, padding: CGFloat) {
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let imageView = UIImageView(image: image)
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imageView.contentMode = .center
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leftView = imageView
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leftView?.frame.size = CGSize(width: image.size.width + padding, height: image.size.height)
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leftViewMode = .always
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}
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}
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#endif
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