native macOS codings agent orchestrator prowl.onev.cat
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Swift
at main
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extension View { func persistentPopover<Content: View>( isPresented: Binding<Bool>, @ViewBuilder content: @escaping () -> Content ) -> some View { modifier(PersistentPopoverModifier(isPresented: isPresented, popoverContent: content)) }}
private struct PersistentPopoverModifier<PopoverContent: View>: ViewModifier { @Binding var isPresented: Bool @ViewBuilder var popoverContent: () -> PopoverContent
func body(content: Content) -> some View { content .background { PersistentPopoverAnchor( isPresented: $isPresented, popoverContent: popoverContent ) .frame(width: 1, height: 1) .accessibilityHidden(true) } }}
private struct PersistentPopoverAnchor<PopoverContent: View>: NSViewRepresentable { @Binding var isPresented: Bool @ViewBuilder var popoverContent: () -> PopoverContent
func makeNSView(context: Context) -> NSView { NSView(frame: NSRect(x: 0, y: 0, width: 1, height: 1)) }
func updateNSView(_ nsView: NSView, context: Context) { if isPresented { if context.coordinator.popover == nil { context.coordinator.show(anchorHint: nsView, content: popoverContent()) } else { context.coordinator.updateContent(popoverContent()) } } else { context.coordinator.close() } }
func makeCoordinator() -> Coordinator { Coordinator(isPresented: $isPresented) }
final class Coordinator: NSObject, NSPopoverDelegate { private(set) var popover: NSPopover? private var hostingController: NSHostingController<AnyView>? private let isPresented: Binding<Bool>
init(isPresented: Binding<Bool>) { self.isPresented = isPresented }
@MainActor func show(anchorHint: NSView, content: some View) { let hosting = NSHostingController(rootView: AnyView(content)) let popover = NSPopover() popover.behavior = .semitransient popover.contentViewController = hosting popover.delegate = self
let anchor: NSView let rect: NSRect
if anchorHint.window != nil { anchor = anchorHint rect = anchorHint.bounds } else if let window = NSApp.keyWindow, let contentView = window.contentView { anchor = contentView rect = NSRect(x: 10, y: contentView.bounds.height - 10, width: 1, height: 1) } else { return }
popover.show(relativeTo: rect, of: anchor, preferredEdge: .minY) self.popover = popover self.hostingController = hosting }
@MainActor func updateContent(_ content: some View) { hostingController?.rootView = AnyView(content) }
@MainActor func close() { let ref = popover popover = nil hostingController = nil ref?.close() }
nonisolated func popoverDidClose(_ notification: Notification) { Task { @MainActor in self.popover = nil self.hostingController = nil if self.isPresented.wrappedValue { self.isPresented.wrappedValue = false } } } }}