Material Design textField to SwiftUI (SwiftUI Use)

MDTextField.swift

//
//  MDTextField.swift
//  ValidationDemo
//
//  Created by Abdullah Alhomaidhi on 15/06/2021.
//

import SwiftUI

struct MDTextField: View {
    
    @Binding var text: String
    let iconName: String
    let placeholderText: String
    let labelText: String
    @Binding var errorText: String
    let isUndoable: Bool
    let isSecureTextEntry: Bool
    
    let onBeginEditing: (()->())?
    let onEndEditing: (()->())?
    let validateCompletion: (()->())?
    
    init(text: Binding<String>,
         iconName: String,
         placeholderText: String,
         labelText: String,
         errorText: Binding<String>,
         isUndoable: Bool = false,
         isSecureTextEntry: Bool = false,
         onBeginEditing: (()->())? = nil,
         onEndEditing: (()->())? = nil,
         validateCompletion: (()->())? = nil) {
        
        self._text = text
        self.iconName = iconName
        self.placeholderText = placeholderText
        self.labelText = labelText
        self._errorText = errorText
        self.isUndoable = isUndoable
        self.isSecureTextEntry = isSecureTextEntry
        self.onBeginEditing = onBeginEditing
        self.onEndEditing = onEndEditing
        self.validateCompletion = validateCompletion
    }
    
    private func CustomTextField() -> some View {
        
        let textfield = UIMDTextField(iconSystemName: iconName, labelText: labelText, placeholderText: placeholderText, text: $text, errorText: $errorText, isSecureTextEntry: isSecureTextEntry, isUndoable: isUndoable, onBeginEditing: onBeginEditing, onEndEditing: onEndEditing, validateCompletion: validateCompletion) { newString in
            text = newString
        }

        textfield.outlinedNormalOutlineColor = .blue
        
        return textfield
    }
    
    var body: some View {
        
        CustomTextField()
            .padding()
            .frame(height: 100)
    }
}

struct MDTextField_Previews: PreviewProvider {
    
    static var previews: some View {
        
        VStack {
            
            MDTextField(text: .constant("Phone"), iconName: "key", placeholderText: "********", labelText: "Password", errorText: .constant(""), isUndoable: false, isSecureTextEntry: true, onBeginEditing: {
                print("onBeginEditing")
            }, onEndEditing: {
                print("onEndEditing")
            }, validateCompletion: {
                print("onEndEditing")
            })
        }
    }
}