139 lines
3.9 KiB
Swift
139 lines
3.9 KiB
Swift
//
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// Swiftfin is subject to the terms of the Mozilla Public
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// License, v2.0. If a copy of the MPL was not distributed with this
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// file, you can obtain one at https://mozilla.org/MPL/2.0/.
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//
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// Copyright (c) 2025 Jellyfin & Jellyfin Contributors
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//
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import SwiftUI
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// TODO: use _UIHostingView for button animation workaround?
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// - have a nice animation for toggle
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struct UnmaskSecureField: UIViewRepresentable {
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@Binding
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private var text: String
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private let onReturn: () -> Void
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private let title: String
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init(
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_ title: String,
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text: Binding<String>,
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onReturn: @escaping () -> Void = {}
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) {
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self._text = text
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self.title = title
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self.onReturn = onReturn
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}
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func makeUIView(context: Context) -> UITextField {
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let textField = UITextField()
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textField.font = context.environment.font?.uiFont ?? UIFont.preferredFont(forTextStyle: .body)
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textField.adjustsFontForContentSizeCategory = true
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textField.isSecureTextEntry = true
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textField.keyboardType = .asciiCapable
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textField.placeholder = title
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textField.text = text
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textField.addTarget(
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context.coordinator,
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action: #selector(Coordinator.textDidChange),
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for: .editingChanged
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)
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let button = UIButton(type: .custom)
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button.translatesAutoresizingMaskIntoConstraints = false
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button.addTarget(
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context.coordinator,
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action: #selector(Coordinator.buttonPressed),
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for: .touchUpInside
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)
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button.setImage(
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UIImage(systemName: "eye.fill"),
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for: .normal
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)
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NSLayoutConstraint.activate([
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button.heightAnchor.constraint(equalToConstant: 50),
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button.widthAnchor.constraint(equalToConstant: 50),
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])
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textField.rightView = button
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textField.rightViewMode = .always
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context.coordinator.button = button
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context.coordinator.onReturn = onReturn
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context.coordinator.textField = textField
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context.coordinator.textDidChange()
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context.coordinator.textBinding = _text
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textField.delegate = context.coordinator
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return textField
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}
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func updateUIView(_ textField: UITextField, context: Context) {
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if text != textField.text {
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textField.text = text
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}
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}
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func makeCoordinator() -> Coordinator {
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Coordinator()
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}
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class Coordinator: NSObject, UITextFieldDelegate {
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weak var button: UIButton?
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weak var textField: UITextField?
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var textBinding: Binding<String> = .constant("")
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var onReturn: () -> Void = {}
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@objc
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func buttonPressed() {
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guard let textField else { return }
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textField.toggleSecureEntry()
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let eye = textField.isSecureTextEntry ? "eye.fill" : "eye.slash"
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button?.setImage(UIImage(systemName: eye), for: .normal)
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}
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@objc
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func textDidChange() {
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guard let textField, let text = textField.text else { return }
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button?.isEnabled = !text.isEmpty
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textBinding.wrappedValue = text
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}
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func textFieldShouldReturn(_ textField: UITextField) -> Bool {
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onReturn()
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return true
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}
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}
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}
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private extension UITextField {
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// https://stackoverflow.com/a/48115361
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func toggleSecureEntry() {
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isSecureTextEntry.toggle()
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if let existingText = text, isSecureTextEntry {
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deleteBackward()
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if let textRange = textRange(from: beginningOfDocument, to: endOfDocument) {
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replace(textRange, withText: existingText)
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}
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}
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if let existingSelectedTextRange = selectedTextRange {
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selectedTextRange = nil
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selectedTextRange = existingSelectedTextRange
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}
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}
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}
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