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WWDC23 · 27 min · App Services / Essentials / System Services / SwiftUI & UI Frameworks

What’s new in AppKit

Discover the latest advances in Mac app development. We’ll share improvements to controls and menus and explore the tools that can help you break free from your (view) bounds. Learn how to add motion to your user interface, take advantage of improvements to text input, and integrate your existing code with Swift and SwiftUI.

Watch at developer.apple.com ↗

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Chapters

Code shown on screen · 7 snippets

Configure NSTableView column customization menu swift · at 1:36 ↗ 
func tableView(_ tableView: NSTableView, 
               userCanChangeVisibilityOf column: NSTableColumn) -> Bool {
    return column.identifier != "Name"
}
Configuring NSProgressIndicator to sync with Progress swift · at 1:53 ↗ 
func fetchData() {
    let url = URL(string: "https://developer.apple.com/wwdc23/")!
    let task = URLSession.shared.dataTask(with: .init(url: url))
    progressIndicator.observedProgress = task.progress
    
    task.resume()
}
Adding an inspector to your app swift · at 3:48 ↗ 
let inspectorItem = NSSplitViewItem(inspectorWithViewController: inspectorViewController)
splitViewController.addSplitViewItem(inspectorItem)

func toolbarDefaultItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier] {
    [.toggleSidebar, .sidebarTrackingSeparator, .flexibleSpace, .addPlant, 
     .inspectorTrackingSeparator, .flexibleSpace, .toggleInspector]
}
Show a NSPopover relative to a NSToolbarItem swift · at 4:38 ↗ 
func toolbarAction(_ toolbarItem: NSToolbarItem) {
    let popover = NSPopover()
    popover.contentViewController = PopoverViewController()
    popover.show(relativeTo: toolbarItem)
}
Adding symbol effects to a image view swift · at 18:30 ↗ 
wifiImageView.image = NSImage(systemSymbolName: "wifi", accessibilityDescription: "wifi icon")
wifiImageView.addSymbolEffect(.variableColor.iterative, options: .repeating)
Using @ViewLoading to remove optionality on properties swift · at 24:56 ↗ 
class ViewController: NSViewController {
    @ViewLoading var datePicker: NSDatePicker
    var date = Date() {
        didSet {
            datePicker.dateValue = date
        }
    }

    override func loadView() {
        super.loadView()
        datePicker = NSDatePicker()
        datePicker.dateValue = date
        view.addSubview(datePicker)
    }
}
Preview NSView and NSViewController using the Preview macro swift · at 25:26 ↗ 
#Preview("Tree Species") {
    let treeCellView = TreeCellView()
    treeCellView.species = .spruce
    return treeCellView
}