I'm writing a MacOS document app using the SwiftUI App lifecycle, and all the tricks I see here and elsewhere for sending a menu action to the active window depend on using platform specific implementation, which is (mostly) unavailable in a SwiftUI Lifecycle app. What I'm looking for is something like SideBarCommands(), which adds a menu item that, when selected by mouse or command key, toggles the appearance of the sidebar in the active window. All the Command examples I have seen thus far are trivial, none address a multi-document, multi-window use case.
Given a ContentView declared thusly:
struct ContentView: View {
@Binding var document: TickleDocument
var body: some View {
TextEditor(text: $document.text)
}
public func menuTickle() {
document.text = "Wahoo!"
}
}
and a command, which is added via:
struct TickleApp: App {
public static var target:TickleDocument?
var body: some Scene {
let docGroup = DocumentGroup(newDocument: TickleDocument()) { file in
ContentView(document: file.$document)
}
docGroup
.commands {
CommandMenu("App Tickles") {
Button("Tickle The ContentView") {
// Here's where I need to call menuTickle() on the active ContentView
}.keyboardShortcut("t")
}
}
}
}
}
What do I need to do so the button closure can call menuTickle() on the active ContentView? I know it can be done, because SideBarCommands() does it (unless Apple is using some non-public API to do it...).
For bonus points, tell me how I can detect whether or not I'm the active ContentView while body is being evaluated, and how I can detect when it changes! Tracking the Environment variable scenePhase is worthless - it always reports active, and never changes.
