How do you restrict the macOS windowing management from restoring a specific window?-CodePudding

I have an app that has a few windows defined as a windows group in the structure conforming to App in the main scene:

      WindowGroup("StandingsView") {

        StandingsView()
          .environmentObject(appServices)
      }
      .handlesExternalEvents(matching: Set(arrayLiteral: "StandingsView"))

The appServices take some time to be configured, so I do not want to automatically restore the windows at start. I create the windows upon user selections being valid, the services being fully configured, and the user pressing a 'start' SwiftUI button:

       if let standingsURL = URL(string: "raceStratLiteApp://StandingsView") {
            NSWorkspace.shared.open(standingsURL)
       }

I've tried closing the windows in the appDelegate's applicationShouldTerminate(). I've also tried setting the isRestorable to false in applicationShouldTerminate:

  func applicationShouldTerminate(_ sender: NSApplication) -> NSApplication.TerminateReply {

    for window in NSApplication.shared.windows {
      window.isRestorable = false
    }
    return .terminateNow
  }

Are there any other methods to not restore a window? or better yet, to be able to programmatically restore it with its previous size, etc but launch only on user direction to 'start'

TIA

CodePudding user response：

From the tip provide by @Asperi, writing the following to defaults will cease the writing of the window states:

$ defaults write <bundleid> NSQuitAlwaysKeepsWindows -bool false

So this is not a code change to the app, but rather an environment config the would be done on install.

I also deleted the savedState directory located at ~/Library/Saved Application State/<bundleid>.savedState for archive builds and at ~/Library/Containers/<App Name>/Data/Library/Saved Application State/<bundleid>.savedState for debug builds. Am not sure if that mattered but once doing these steps it solved the problem. Thanks @Asperi

CodePudding user response：

The code solution as @Asperi suggests in the later comment:

  func applicationDidFinishLaunching(_ notification: Notification) {
    UserDefaults.standard.register(defaults: ["NSQuitAlwaysKeepsWindows" : false])
  }