myTextField.wantsLayer = true
myTextField.layer?.cornerRadius = 2.0
myTextField.layer?.borderWidth = 1.0
myTextField.layer?.borderColor = CGColor(red: 0.69, green: 0.69, blue: 0.69, alpha: 1.0)

class CustomTextFieldCell: NSTextFieldCell {

    private static let padding: CGFloat = 3.0

    override func cellSize(forBounds rect: NSRect) -> NSSize {
        var size = super.cellSize(forBounds: rect)
        size.height += (CustomTextFieldCell.padding * 2)
        return size
    }

    override func titleRect(forBounds rect: NSRect) -> NSRect {
        return rect.insetBy(dx: CustomTextFieldCell.padding, dy: CustomTextFieldCell.padding)
    }

    override func edit(withFrame rect: NSRect, in controlView: NSView, editor textObj: NSText, delegate: Any?, event: NSEvent?) {
        let insetRect = rect.insetBy(dx: CustomTextFieldCell.padding, dy: CustomTextFieldCell.padding)
        super.edit(withFrame: insetRect, in: controlView, editor: textObj, delegate: delegate, event: event)
    }

    override func select(withFrame rect: NSRect, in controlView: NSView, editor textObj: NSText, delegate: Any?, start selStart: Int, length selLength: Int) {
        let insetRect = rect.insetBy(dx: CustomTextFieldCell.padding, dy: CustomTextFieldCell.padding)
        super.select(withFrame: insetRect, in: controlView, editor: textObj, delegate: delegate, start: selStart, length: selLength)
    }

    override func drawInterior(withFrame cellFrame: NSRect, in controlView: NSView) {
        let insetRect = cellFrame.insetBy(dx: CustomTextFieldCell.padding, dy: CustomTextFieldCell.padding)
        super.drawInterior(withFrame: insetRect, in: controlView)
    }

}