74 lines
2.2 KiB
Swift
74 lines
2.2 KiB
Swift
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// FocusableTextField.swift
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// Tusker
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//
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// Created by Shadowfacts on 11/2/20.
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// Copyright © 2020 Shadowfacts. All rights reserved.
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//
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import SwiftUI
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struct FocusableTextField: UIViewRepresentable {
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typealias UIViewType = UITextField
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let placeholder: String
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let text: Binding<String>
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let becomeFirstResponder: Binding<Bool>?
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let onCommit: (() -> Void)?
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init(placeholder: String, text: Binding<String>, becomeFirstResponder: Binding<Bool>? = nil, onCommit: (() -> Void)? = nil) {
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self.placeholder = placeholder
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self.text = text
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self.becomeFirstResponder = becomeFirstResponder
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self.onCommit = onCommit
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}
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func makeUIView(context: Context) -> UITextField {
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let field = UITextField()
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field.delegate = context.coordinator
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field.addTarget(context.coordinator, action: #selector(Coordinator.didChange(_:)), for: .editingChanged)
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field.addTarget(context.coordinator, action: #selector(Coordinator.didEnd(_:)), for: .primaryActionTriggered)
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return field
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}
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func updateUIView(_ uiView: UITextField, context: Context) {
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uiView.placeholder = placeholder
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uiView.text = text.wrappedValue
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context.coordinator.text = text
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context.coordinator.onCommit = onCommit
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if becomeFirstResponder?.wrappedValue == true {
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DispatchQueue.main.async {
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uiView.becomeFirstResponder()
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becomeFirstResponder?.wrappedValue = false
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}
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}
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}
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func makeCoordinator() -> Coordinator {
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return Coordinator(text: text)
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}
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class Coordinator: NSObject, UITextFieldDelegate {
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var text: Binding<String>
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var onCommit: (() -> Void)?
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init(text: Binding<String>) {
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self.text = text
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}
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@objc func didChange(_ textField: UITextField) {
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text.wrappedValue = textField.text ?? ""
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}
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@objc func didEnd(_ textField: UITextField) {
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onCommit?()
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}
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func textFieldDidEndEditing(_ textField: UITextField) {
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onCommit?()
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}
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}
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}
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