Custom UITextfield class for manage image before Textfield and also add secure text hide show button.

IPTextField.swift

//
//  IPTextField.swift
//  
//
//  Created by Ilesh on 06/04/18.
//  Copyright © 2019 Ilesh. All rights reserved.
//

import Foundation
import UIKit

//MARK:- DEAFULT CONFIGURATIONS
class IPTextField: UITextField {
   
    // INIT
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        self.font = UIFont(name: Theme.Font.Regular, size: Theme.Font.size.TxtSize) ?? UIFont.systemFont(ofSize: Theme.Font.size.TxtSize)
        self.leftView?.frame = CGRect(x: 30, y: 0, width: 35, height:35)
        self.leftViewMode = .always
        self.leftView?.contentMode = .scaleAspectFit
        self.layer.masksToBounds = true
        
        if self.tag == 901{
            self.textColor = Theme.color.text
            self.tintColor = Theme.color.text
            self.backgroundColor = UIColor.clear
            self.layer.borderWidth = 1.0
            self.layer.borderColor = Theme.color.text.cgColor
            self.layer.cornerRadius = 8.0
        }
        else if self.tag == 902{
            self.textColor = Theme.color.textPlaceholderDark
            self.backgroundColor = Theme.color.textFieldLightBG
            self.placeHolderColor = Theme.color.textFieldBG
            self.tintColor = Theme.color.textDark
        }
        else if self.tag == 903{
            self.textColor = Theme.color.textPlaceholderDark
            self.backgroundColor = UIColor.white
            self.placeHolderColor = Theme.color.textPlaceholderDark
            self.tintColor = Theme.color.textDark
            self.leftView = UIView()
            self.leftView?.frame = CGRect(x: 5, y: 0, width: 20, height:35)
        }
        else if self.tag == 904{
            self.textColor = Theme.color.textPlaceholderDark
            self.backgroundColor = UIColor.white
            self.placeHolderColor = Theme.color.textPlaceholderDark
            self.tintColor = Theme.color.textDark
            self.leftView = UIView()
            self.leftView?.frame = CGRect(x: 5, y: 0, width: 20, height:35)
            
            self.layer.borderWidth = 1.0
            self.layer.borderColor = Theme.color.textFieldBG.cgColor
        }
        else if self.tag == 904{
            self.textColor = Theme.color.textDark
            self.backgroundColor = Theme.color.textFieldLightBG
            self.placeHolderColor = Theme.color.textPlaceholderDark
            self.tintColor = Theme.color.textDark
            self.leftView = UIView()
            self.leftView?.frame = CGRect(x: 5, y: 0, width: 10, height:35)
        }
        else{
            self.textColor = Theme.color.text
            self.tintColor = Theme.color.text
            self.backgroundColor = Theme.color.textFieldBG
            self.placeHolderColor = Theme.color.textPlaceholder
        }
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
        setUpView()
    }
    override func prepareForInterfaceBuilder() {
        super.prepareForInterfaceBuilder()
        setUpView()
    }
    
    /**
     Sets up the view.
     */
    func setUpView() {
        self.layer.masksToBounds = true
        if self.tag == 902{
            self.backgroundColor = UIColor.clear
            self.placeHolderColor = Theme.color.textPlaceholder
            self.layer.cornerRadius = self.frame.height/2
        }else if self.tag == 901{
            self.placeHolderColor = Theme.color.textPlaceholder
            self.layer.cornerRadius = 8
        }
        else if self.tag == 903{
            self.layer.cornerRadius = 15
            self.placeHolderColor = Theme.color.textPlaceholderDark
        }
        else{
            self.placeHolderColor = Theme.color.textPlaceholder
            self.layer.cornerRadius = self.frame.height/2
        }
    }
    
    /**
      Layout methos
     */
    override func layoutSubviews() {
        super.layoutSubviews()
        self.setUpView()
    }
}


extension UITextField
{
       
    enum Direction
    {
        case Left
        case Right
    }
    
    func AddImage(direction:Direction,imageName:String,Frame:CGRect,backgroundColor:UIColor)
    {
        let View = UIView(frame: Frame)
        View.backgroundColor = backgroundColor
        
        let imageView = UIImageView(frame: Frame)
        imageView.image = UIImage(named: imageName)
        
        View.addSubview(imageView)
        
        if Direction.Left == direction
        {
            self.leftViewMode = .always
            self.leftView = View
        }
        else
        {
            self.rightViewMode = .always
            self.rightView = View
        }
    }
    
    func withImage(direction: Direction, image: UIImage, colorSeparator: UIColor, colorBorder: UIColor){
        let mainView = UIView(frame: CGRect(x: 0, y: 0, width: 50, height: self.frame.height))
        //mainView.layer.cornerRadius = 5
        let view = UIView(frame: CGRect(x: 0, y: 0, width: self.frame.width, height: self.frame.height))
        view.backgroundColor = .clear
        view.clipsToBounds = true
        view.layer.cornerRadius = 5
        view.layer.borderWidth = CGFloat(0.5)
        view.layer.borderColor = colorBorder.cgColor
        mainView.addSubview(view)
        
        let imageView = UIImageView(image: image)
        imageView.contentMode = .center
        imageView.frame = CGRect(x: 10.0, y: (view.frame.size.height/2) - 15, width: 30.0, height: 30.0)
        view.addSubview(imageView)
        
        let seperatorView = UIView()
        seperatorView.backgroundColor = colorSeparator
        mainView.addSubview(seperatorView)

        if(Direction.Left == direction){ // image left
            seperatorView.frame = CGRect(x: 40, y: 0, width: 5, height: self.frame.height)
            self.leftViewMode = .always
            self.leftView = mainView
        } else { // image right
            seperatorView.frame = CGRect(x: 0, y: 0, width: 5, height: self.frame.height)
            self.rightViewMode = .always
            self.rightView = mainView
        }
        
        //self.layer.borderColor = #colorLiteral(red: 0.6431372549, green: 0.6431372549, blue: 0.6431372549, alpha: 1)
        //self.layer.borderWidth = CGFloat(0.5)
        self.layer.cornerRadius = self.frame.height/2
    }
    
    func addRightView(img:UIImage,selected:UIImage){
        if let rightButton = self.rightView, rightButton is UIButton {
          print("Button exist")
          return
        }
        let button = UIButton(type: .custom)
        button.setImage(img, for: .normal)
        button.setImage(selected, for: .selected)
        button.frame = CGRect(x: CGFloat(self.frame.size.width - self.height), y: CGFloat(5), width: self.height, height: self.height)
        button.removeTarget(self, action: nil, for: .allEvents)
        button.addTarget(self, action: #selector(secureMode(_:)), for: .touchUpInside)
        self.rightView = button
        self.rightView?.bringSubviewToFront(self)
        self.rightViewMode = .always
    }
    
    @objc func secureMode(_ sender: UIButton) {
        print("textfield right button")
        DispatchQueue.main.async {
            if sender.isSelected {
                sender.isSelected = false
                self.isSecureTextEntry = true
            }else{
                sender.isSelected = true
                self.isSecureTextEntry = false
            }
        }
    }
}