StatusBar Multiple Instances

I’m starting to work with Terminal.Gui and right now have implemented several instances of Toplevel for different “screens” in my program. (I don’t want borders/title drawn as would happen with a Window, but I do want a StatusBar for each Toplevel.)

The first Toplevel that gets created with a new StatusBar() looks fine, but all subsequent Toplevel views do not have a visible new StatusBar(); additionally, hot-key functions are usable even without a visible StatusBar.

I see there’s StatusBar property on the Toplevel. If I try assigning a new StatusBar() to this property, all views get a visible StatusBar but the first view has an “extra” blank line which ends up with a “ghost” StatusBar when the views are switched.

[rmorales87atx]

Thank you all for the code samples! This looks decent 👍

[BDisp]

You are right. See the demo.cs in the Example project which has a similar approach.

Sorry @tznind. I gave you wrong information. Application.Init (); doesn’t do nothing to acquire the needed behavior, because the driver and Appliaction.Top are already setup. It’s the var top = Application.Top; who do what it’s intended to do, because only the Application.Top can have a MenuBar and a StatusBar. But we must be careful to cleanup all the Application.Top subviews, before assign it to a new Toplevel. So, here is a changed example:

class Program {
	static void Main (string [] args)
	{
		Application.Init ();

		Load (MainTop ());

		Application.Shutdown ();
	}

	private static Toplevel MainTop ()
	{
		var top = NewTop ();

		top.Add (new Label ("Window1"));

		var sb = new StatusBar (new [] {
			new StatusItem(Key.CtrlMask | Key.Q, "~^Q~ Exit", () => Application.RequestStop()),
			new StatusItem(Key.CtrlMask | Key.T, "~^T~ Next", () => Load(SecondTop()))
		});
		top.Add (sb);

		return top;
	}

	private static Toplevel SecondTop ()
	{
		var top = NewTop ();

		top.Add (new Label ("Window2"));

		var sb = new StatusBar (new [] {
			new StatusItem(Key.CtrlMask | Key.Q, "~^Q~ Exit", () => Application.RequestStop()),
			new StatusItem(Key.CtrlMask | Key.P, "~^P~ Previous", () => Load(MainTop())),
			new StatusItem(Key.CtrlMask | Key.T, "~^T~ Next", () => Load(ThirdTop()))
		});
		top.Add (sb);

		return top;
	}

	private static Toplevel ThirdTop ()
	{
		var top = NewTop ();

		top.Add (new Label ("Window3"));

		var sb = new StatusBar (new [] {
			new StatusItem(Key.CtrlMask | Key.Q, "~^Q~ Exit", () => Application.RequestStop()),
				new StatusItem(Key.CtrlMask | Key.P, "~^P~ Previous", () => Load(SecondTop()))
		});
		top.Add (sb);

		return top;
	}

	private static void Load (Toplevel top)
	{
		Application.Run (top);
	}

	private static Toplevel NewTop ()
	{
		Application.Top.RemoveAll ();
		return Application.Top;
	}
}