Build an AppKit app with the new design

// Removing toolbar item glass

toolbarItem.isBordered = false

// Tints the glass with the accent color.
toolbarItem.style = .prominent

// Tints the glass with a specific color.
toolbarItem.backgroundTintColor = .systemGreen

// Numeric badge
NSItemBadge.count(4)

// Text badge
NSItemBadge.text("New")

// Badge indicator
NSItemBadge.indicator

// Content under the sidebar

splitViewItem.automaticallyAdjustsSafeAreaInsets = true

// Avoiding a window corner


func updateConstraints() {
    guard !installedButtonConstraints else { return }

    let safeArea = layoutGuide(for: .safeArea(cornerAdaptation: .horizontal))

    NSLayoutConstraint.activate([
        safeArea.leadingAnchor.constraint(equalTo: button.leadingAnchor),
        safeArea.trailingAnchor.constraint(greaterThanOrEqualTo: button.trailingAnchor),
        safeArea.bottomAnchor.constraint(equalTo: button.bottomAnchor)
    ])
    installedButtonConstraints = true
}

// Create buttons with varying levels of prominence

// Prefer a “secondary” tinted appearance for the shuffle and enqueue buttons
shuffleButton.tintProminence = .secondary
playNextButton.tintProminence = .secondary

// The "play" will automatically use primary prominence because it is the default button
playButton.keyEquivalent = "\r"

// Adopting NSGlassEffectView

let userInfoView = UserInfoView()
let activityPickerView = ActivityPickerView()

let userInfoGlass = NSGlassEffectView()
userInfoGlass.contentView = userInfoView

let activityPickerGlass = NSGlassEffectView()
activityPickerGlass.contentView = activityPickerView

let stack = NSStackView(views: [userInfoGlass, 
                                activityPickerGlass])
stack.orientation = .horizontal

// Adopting NSGlassEffectContainerView

let userInfoView = UserInfoView()
let activityPickerView = ActivityPickerView()

let userInfoGlass = NSGlassEffectView()
userInfoGlass.contentView = userInfoView
userInfoGlass.cornerRadius = 999

let activityPickerGlass = NSGlassEffectView()
activityPickerGlass.contentView = activityPickerView
activityPickerGlass.cornerRadius = 999

let stack = NSStackView(views: [userInfoGlass, 
                                activityPickerGlass])
stack.orientation = .horizontal

let glassContainer = NSGlassEffectContainerView()
glassContainer.contentView = stack