What’s new in AppKit

1:36 - Configure NSTableView column customization menu

func tableView(_ tableView: NSTableView, 
               userCanChangeVisibilityOf column: NSTableColumn) -> Bool {
    return column.identifier != "Name"
}

1:53 - Configuring NSProgressIndicator to sync with Progress

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()
}

3:48 - Adding an inspector to your app

let inspectorItem = NSSplitViewItem(inspectorWithViewController: inspectorViewController)
splitViewController.addSplitViewItem(inspectorItem)

func toolbarDefaultItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier] {
    [.toggleSidebar, .sidebarTrackingSeparator, .flexibleSpace, .addPlant, 
     .inspectorTrackingSeparator, .flexibleSpace, .toggleInspector]
}

4:38 - Show a NSPopover relative to a NSToolbarItem

func toolbarAction(_ toolbarItem: NSToolbarItem) {
    let popover = NSPopover()
    popover.contentViewController = PopoverViewController()
    popover.show(relativeTo: toolbarItem)
}

18:30 - Adding symbol effects to a image view

wifiImageView.image = NSImage(systemSymbolName: "wifi", accessibilityDescription: "wifi icon")
wifiImageView.addSymbolEffect(.variableColor.iterative, options: .repeating)

24:56 - Using @ViewLoading to remove optionality on properties

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)
    }
}

25:26 - Preview NSView and NSViewController using the Preview macro

#Preview("Tree Species") {
    let treeCellView = TreeCellView()
    treeCellView.species = .spruce
    return treeCellView
}