gui-cs.Terminal.Gui/Tests/UnitTests/View/Navigation/EnabledTests.cs

#nullable enable
namespace UnitTests.ViewBaseTests;

public class EnabledTests
{

    [Fact]
    [AutoInitShutdown]
    public void _Enabled_Sets_Also_Sets_SubViews ()
    {
        var wasClicked = false;
        var button = new Button { Text = "Click Me" };
        button.IsDefault = true;
        button.Accepting += (s, e) => wasClicked = !wasClicked;
        var win = new Window { Width = Dim.Fill (), Height = Dim.Fill () };
        win.Add (button);
        var top = new Runnable ();
        top.Add (win);

        var iterations = 0;

        Application.Iteration += OnApplicationOnIteration;

        Application.Run (top);
        Application.Iteration -= OnApplicationOnIteration;

        Assert.Equal (1, iterations);
        top.Dispose ();

        return;

        void OnApplicationOnIteration (object? s, EventArgs<IApplication?> a)
        {
            iterations++;

            win.NewKeyDownEvent (Key.Enter);
            Assert.True (wasClicked);
            button.NewMouseEvent (new () { Flags = MouseFlags.Button1Clicked });
            Assert.False (wasClicked);
            Assert.True (button.Enabled);
            Assert.True (button.CanFocus);
            Assert.True (button.HasFocus);
            Assert.True (win.Enabled);
            Assert.True (win.CanFocus);
            Assert.True (win.HasFocus);

            Assert.True (button.HasFocus);
            win.Enabled = false;
            Assert.False (button.HasFocus);
            button.NewKeyDownEvent (Key.Enter);
            Assert.False (wasClicked);
            button.NewMouseEvent (new () { Flags = MouseFlags.Button1Clicked });
            Assert.False (wasClicked);
            Assert.False (button.Enabled);
            Assert.True (button.CanFocus);
            Assert.False (button.HasFocus);
            Assert.False (win.Enabled);
            Assert.True (win.CanFocus);
            Assert.False (win.HasFocus);
            button.SetFocus ();
            Assert.False (button.HasFocus);
            Assert.False (win.HasFocus);
            win.SetFocus ();
            Assert.False (button.HasFocus);
            Assert.False (win.HasFocus);

            win.Enabled = true;
            win.FocusDeepest (NavigationDirection.Forward, null);
            Assert.True (button.HasFocus);
            Assert.True (win.HasFocus);

            Application.RequestStop ();
        }
    }
}