RoundedTextField.swfit

//
//  RoundedTextField.swfit
//
//  Created by Maysam Shahsavari on 2020-07-30.
//  Copyright © 2020 Maysam Shahsavari. All rights reserved.
//

import UIKit

/// Configuration for `RoundedTextField`
struct RoundedTextFieldConfig {
    let font: UIFont?
    let returnType: UIReturnKeyType
    let cornerRadius: CGFloat
    let borderWidth: CGFloat
    let borderColor: UIColor
    let placeholderText: NSAttributedString?
    let cleaButtonOffset: CGFloat?
    let leftSidePadding: CGFloat
    let accessoryView: UIView?
}
/// A customizable `UITextField` with rounded corners
class RoundedTextField: UITextField {
    private var _cleaButtonOffset: CGFloat = 0
    
    override func clearButtonRect(forBounds bounds: CGRect) -> CGRect {
        let originalRect = super.clearButtonRect(forBounds: bounds)
        return originalRect.offsetBy(dx: _cleaButtonOffset * -1, dy: 0)
    }
    
    func config(_ config: RoundedTextFieldConfig) {
        self._cleaButtonOffset = config.cleaButtonOffset ?? 0
        let sideView = UIView(frame: CGRect(x: 0, y: 0,
                                            width: config.leftSidePadding, height: self.bounds.height))
        self.font = config.font
        self.leftView = sideView
        self.leftViewMode = .always
        self.inputAccessoryView = config.accessoryView
        self.clearButtonMode = .whileEditing
        self.returnKeyType = config.returnType
        self.clipsToBounds = true
        self.layer.masksToBounds = true
        self.layer.cornerRadius = self.bounds.height / 2
        self.layer.borderWidth = 5
        self.layer.borderColor = config.borderColor.cgColor
    }
}