attributedstringattributes.swift

import Cocoa

enum NSAttributedStringAttribute {
    case font(NSFont)
    case foregroundColor(NSColor)
    // ...
    
    static func getDictionary(_ attributes: [NSAttributedStringAttribute]) -> [NSAttributedStringKey: Any] {
        var result: [NSAttributedStringKey: Any] = [:]
        
        for attribute in attributes {
            switch attribute {
            case .font(let font):
                result[.font] = font
            case .foregroundColor(let color):
                result[.foregroundColor] = color
            }
        }
        return result
    }
}

extension NSAttributedString {
    convenience init(string: String, attributes: [NSAttributedStringAttribute]) {
        self.init(string: string, attributes: NSAttributedStringAttribute.getDictionary(attributes))
    }
}

let displayName = "foo"
let attributes = [NSAttributedStringAttribute.font(NSFont.systemFont(ofSize: 12))]
let attributedString = NSAttributedString(string: displayName, attributes: attributes)