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73 lines
1.9 KiB
73 lines
1.9 KiB
4 years ago
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import SwiftUI
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struct TextViewWrapper: UIViewRepresentable {
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init(text: Binding<String?>, focused: Binding<Bool>, contentHeight: Binding<CGFloat>) {
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self._text = text
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self._focused = focused
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self._contentHeight = contentHeight
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}
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@Binding var text: String?
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@Binding var focused: Bool
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@Binding var contentHeight: CGFloat
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// MARK: - UIViewRepresentable
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func makeUIView(context: Context) -> UITextView {
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let textView = UITextView()
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textView.delegate = context.coordinator
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textView.font = .systemFont(ofSize: 16)
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textView.backgroundColor = .clear
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textView.autocorrectionType = .no
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return textView
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}
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func makeCoordinator() -> Coordinator {
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Coordinator(text: $text, focused: $focused, contentHeight: $contentHeight)
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}
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func updateUIView(_ uiView: UITextView, context: Context) {
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uiView.text = text
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}
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class Coordinator: NSObject, UITextViewDelegate {
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init(text: Binding<String?>, focused: Binding<Bool>, contentHeight: Binding<CGFloat>) {
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self._text = text
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self._focused = focused
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self._contentHeight = contentHeight
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}
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@Binding private var text: String?
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@Binding private var focused: Bool
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@Binding private var contentHeight: CGFloat
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// MARK: - UITextViewDelegate
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func textViewDidChange(_ textView: UITextView) {
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text = textView.text
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contentHeight = textView.contentSize.height
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}
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func textViewDidBeginEditing(_ textView: UITextView) {
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focused = true
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}
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func textViewDidEndEditing(_ textView: UITextView) {
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focused = false
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contentHeight = text == nil ? 0 : textView.contentSize.height
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}
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}
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}
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#if DEBUG
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struct TextViewWrapper_Previews: PreviewProvider {
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@State static var text:String?
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static var previews: some View {
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TextViewWrapper(text: $text, focused: .constant(false), contentHeight: .constant(0))
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}
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}
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#endif
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