article-buttoncomponents4.swift

private struct Palette {
    static let foreground = UIColor(named: "color/foreground")!
}

struct ComponentStyle {
    struct Button {
        private static let defaultInsets = UIEdgeInsets(top: 12, left: 16, bottom: 12, right: 16)
        private static let defaultFont = UIFont.preferredFont(forTextStyle: .body)

        static let primary =
            ButtonStyle(font: defaultFont,
                        insets: defaultInsets,
                        enabled: ButtonStateStyle(foreground: Palette.foreground, background: UIImage(named: "button/primary/enabled")!),
                        highlighted: ButtonStateStyle(foreground: Palette.foreground, background: UIImage(named: "button/primary/highlighted")!),
                        disabled: ButtonStateStyle(foreground: Palette.foreground, background: UIImage(named: "button/primary/disabled")!))
    }
}