163 lines
4.3 KiB
Swift
163 lines
4.3 KiB
Swift
//
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// LoginForm.swift
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// Login
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//
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// Created by Javier Cicchelli on 01/12/2022.
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// Copyright © 2022 Röck+Cöde. All rights reserved.
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//
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import SwiftUI
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struct LoginForm: View {
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// MARK: States
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@FocusState private var focusedField: Field?
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// MARK: Bindings
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@Binding var username: String
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@Binding var password: String
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@Binding var errorMessage: String?
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// MARK: Properties
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let onReturn: () -> Void
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// MARK: Body
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var body: some View {
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VStack(
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alignment: .leading,
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spacing: 16
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) {
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TextField(
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NSLocalizedString(
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"login.text_field.username.placeholder",
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bundle: .module,
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comment: "The placeholder for the username text field."
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),
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text: $username
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) { isBeginEditing in
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guard isBeginEditing, errorMessage != nil else { return }
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errorMessage = nil
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}
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.textContentType(.username)
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.lineLimit(1)
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.autocapitalization(.none)
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.disableAutocorrection(true)
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.keyboardType(.default)
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.focused($focusedField, equals: .username)
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.onSubmit {
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onUsernameReturnPressed()
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}
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Divider()
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SecureField(
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NSLocalizedString(
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"login.text_field.password.placeholder",
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bundle: .module,
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comment: "The placeholder for the password text field."
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),
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text: $password
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)
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.textContentType(.password)
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.lineLimit(1)
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.autocapitalization(.none)
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.disableAutocorrection(true)
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.keyboardType(.default)
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.focused($focusedField, equals: .password)
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.onSubmit {
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onPasswordReturnPressed()
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}
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if let errorMessage {
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Divider()
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Text(
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NSLocalizedString(
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errorMessage,
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bundle: .module,
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comment: "The error message received from the backend."
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)
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)
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.font(.body)
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.foregroundColor(.red)
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.frame(maxWidth: .infinity)
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.multilineTextAlignment(.center)
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}
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}
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.frame(maxWidth: .infinity, alignment: .leading)
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.padding(16)
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.background(Color.primary.colorInvert())
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.cornerRadius(8)
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.onAppear {
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setClearButtonIfNeeded()
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}
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}
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}
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// MARK: - Helpers
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private extension LoginForm {
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func setClearButtonIfNeeded() {
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let textFieldAppearance = UITextField.appearance()
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guard textFieldAppearance.clearButtonMode != .whileEditing else { return }
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textFieldAppearance.clearButtonMode = .whileEditing
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}
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func onUsernameReturnPressed() {
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guard !username.isEmpty else { return }
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if password.isEmpty {
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focusedField = .password
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} else {
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onReturn()
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}
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}
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func onPasswordReturnPressed() {
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guard !password.isEmpty else { return }
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if username.isEmpty {
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focusedField = .username
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} else {
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onReturn()
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}
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}
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}
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// MARK: - Enumerations
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private extension LoginForm {
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enum Field: Hashable {
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case username
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case password
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}
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}
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// MARK: - Previews
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struct LoginForm_Previews: PreviewProvider {
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static var previews: some View {
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LoginForm(
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username: .constant("Some username"),
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password: .constant("Some Password"),
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errorMessage: .constant(nil),
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onReturn: {}
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)
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.previewDisplayName("Login form with no error message")
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LoginForm(
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username: .constant("Some username"),
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password: .constant("Some Password"),
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errorMessage: .constant("Some error goes in here..."),
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onReturn: {}
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)
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.previewDisplayName("Login form with some error message")
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}
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}
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