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April 5, 2024 19:48
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| import SwiftUI | |
| import UIKit | |
| struct EditorView<AccessoryShelf: View>: UIViewRepresentable { | |
| // MARK: - Properties | |
| var placeholderText: String | |
| // MARK: - Binding | |
| @Binding var text: String | |
| @Binding var isFirstResponder: Bool | |
| // MARK: - Properties | |
| let accessoryShelf: AccessoryShelf | |
| let padding: CGFloat = 16 | |
| /// Creates the `UITextView` instance. | |
| func makeUIView(context: Context) -> UITextView { | |
| let textView = UITextView() | |
| textView.delegate = context.coordinator | |
| textView.text = text | |
| textView.font = .rounded(ofSize: 19, weight: .regular) | |
| textView.showsVerticalScrollIndicator = false | |
| textView.textContainer.lineFragmentPadding = 0 | |
| textView.textContainerInset = UIEdgeInsets(top: padding, left: padding, bottom: padding, right: padding) | |
| /// Create our placeholder string | |
| /// This is using a private API, so might get rejected for this... | |
| /// https://twitter.com/SebJVidal/status/1749162638573961383 | |
| let placeholderAttributes: [NSAttributedString.Key: Any] = [ | |
| .font: UIFont.rounded(ofSize: 19, weight: .regular), | |
| .foregroundColor: UIColor.placeholderText | |
| ] | |
| let attributedPlaceholderString = NSAttributedString(string: Strings.EmptyTextFieldPrompt, attributes: placeholderAttributes) | |
| textView.perform(NSSelectorFromString("setAttributedPlaceholder:"), with: attributedPlaceholderString) | |
| return textView | |
| } | |
| /// Updates the `UITextView` instance. | |
| func updateUIView(_ uiView: UITextView, context: Context) { | |
| uiView.text = text | |
| /// Handles if our `TextView` should enter | |
| /// focused or not. | |
| if isFirstResponder && !uiView.isFirstResponder { | |
| uiView.becomeFirstResponder() | |
| } else if !isFirstResponder && uiView.isFirstResponder { | |
| uiView.resignFirstResponder() | |
| } | |
| } | |
| /// Makes the coordinator to handle text changes. | |
| func makeCoordinator() -> Coordinator { | |
| Coordinator(self) | |
| } | |
| class Coordinator: NSObject, UITextViewDelegate { | |
| var parent: EditorView | |
| init(_ parent: EditorView) { | |
| self.parent = parent | |
| } | |
| func textViewDidChange(_ textView: UITextView) { | |
| DispatchQueue.main.async { | |
| self.parent.text = textView.text | |
| } | |
| } | |
| } | |
| } | |
| private extension UIFont { | |
| class func rounded(ofSize size: CGFloat, weight: UIFont.Weight) -> UIFont { | |
| let systemFont = UIFont.systemFont(ofSize: size, weight: weight) | |
| let font: UIFont | |
| if let descriptor = systemFont.fontDescriptor.withDesign(.rounded) { | |
| font = UIFont(descriptor: descriptor, size: size) | |
| } else { | |
| font = systemFont | |
| } | |
| return font | |
| } | |
| } |
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