81 lines
2.0 KiB
Swift
81 lines
2.0 KiB
Swift
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//
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// TextEditorView.swift
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//
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//
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// Created by MainasuK Cirno on 2021-7-16.
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//
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import UIKit
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import SwiftUI
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public struct TextEditorView: UIViewRepresentable {
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@Binding var string: String
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let width: CGFloat
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let attributedString: NSAttributedString
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public init(
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string: Binding<String>,
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width: CGFloat,
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attributedString: NSAttributedString
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) {
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self._string = string
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self.width = width
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self.attributedString = attributedString
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}
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public func makeUIView(context: Context) -> UITextView {
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let textView = UITextView(frame: .zero)
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textView.isScrollEnabled = false
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textView.font = .preferredFont(forTextStyle: .body)
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textView.textColor = .label
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textView.delegate = context.coordinator
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textView.translatesAutoresizingMaskIntoConstraints = false
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let widthLayoutConstraint = textView.widthAnchor.constraint(equalToConstant: 100)
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widthLayoutConstraint.priority = .required - 1
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context.coordinator.widthLayoutConstraint = widthLayoutConstraint
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return textView
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}
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public func updateUIView(_ textView: UITextView, context: Context) {
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// update content
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// textView.attributedText = attributedString
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textView.text = string
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// update layout
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context.coordinator.updateLayout(width: width)
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}
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public func makeCoordinator() -> Coordinator {
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Coordinator(self)
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}
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public class Coordinator: NSObject, UITextViewDelegate {
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var parent: TextEditorView
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var widthLayoutConstraint: NSLayoutConstraint?
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init(_ parent: TextEditorView) {
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self.parent = parent
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}
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public func textViewDidChange(_ textView: UITextView) {
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parent.string = textView.text
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}
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func updateLayout(width: CGFloat) {
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guard let widthLayoutConstraint = widthLayoutConstraint else { return }
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widthLayoutConstraint.constant = width
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widthLayoutConstraint.isActive = true
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}
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}
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}
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