gui-cs.Terminal.Gui/UICatalog/Scenarios/Navigation.cs

using System.Timers;
using Terminal.Gui;

namespace UICatalog.Scenarios;

[ScenarioMetadata ("Navigation", "Navigation Tester")]
[ScenarioCategory ("Mouse and Keyboard")]
[ScenarioCategory ("Layout")]
[ScenarioCategory ("Overlapped")]
public class Navigation : Scenario
{
    private int _hotkeyCount;

    public override void Main ()
    {
        Application.Init ();

        Window app = new ()
        {
            Title = GetQuitKeyAndName (),
            TabStop = TabBehavior.TabGroup
        };

        var editor = new AdornmentsEditor
        {
            X = 0,
            Y = 0,
            AutoSelectViewToEdit = true,
            TabStop = TabBehavior.NoStop
        };
        app.Add (editor);

        FrameView testFrame = new ()
        {
            Title = "_1 Test Frame",
            X = Pos.Right (editor),
            Width = Dim.Fill (),
            Height = Dim.Fill ()
        };

        app.Add (testFrame);

        Button button = new ()
        {
            X = 0,
            Y = 0,
            Title = $"TopButton _{GetNextHotKey ()}"
        };

        testFrame.Add (button);

        View tiledView1 = CreateTiledView (0, 2, 2);
        View tiledView2 = CreateTiledView (1, Pos.Right (tiledView1), Pos.Top (tiledView1));

        testFrame.Add (tiledView1);
        testFrame.Add (tiledView2);

        View tiledView3 = CreateTiledView (1, Pos.Right (tiledView2), Pos.Top (tiledView2));
        tiledView3.TabStop = TabBehavior.TabGroup;
        tiledView3.BorderStyle = LineStyle.Double;
        testFrame.Add (tiledView3);

        View overlappedView1 = CreateOverlappedView (2, 10, Pos.Center ());
        View tiledSubView = CreateTiledView (4, 0, 2);
        overlappedView1.Add (tiledSubView);

        ProgressBar progressBar = new ()
        {
            X = Pos.AnchorEnd (),
            Y = Pos.AnchorEnd (),
            Width = Dim.Fill (),
            Id = "progressBar"
        };
        overlappedView1.Add (progressBar);

        Timer timer = new (10)
        {
            AutoReset = true
        };

        timer.Elapsed += (o, args) =>
                         {
                             if (progressBar.Fraction == 1.0)
                             {
                                 progressBar.Fraction = 0;
                             }

                             progressBar.Fraction += 0.01f;

                             Application.Wakeup ();

                             progressBar.SetNeedsDisplay ();
                         };
        timer.Start ();

        View overlappedView2 = CreateOverlappedView (3, 8, 10);

        View overlappedInOverlapped1 = CreateOverlappedView (4, 1, 4);
        overlappedView2.Add (overlappedInOverlapped1);

        View overlappedInOverlapped2 = CreateOverlappedView (5, 10, 7);
        overlappedView2.Add (overlappedInOverlapped2);

        StatusBar statusBar = new ();

        statusBar.Add (
                       new Shortcut
                       {
                           Title = "Hide",
                           Text = "Hotkey",
                           Key = Key.F4,
                           Action = () =>
                                    {
                                        overlappedView2.Visible = false;
                                        overlappedView2.Enabled = overlappedView2.Visible;
                                    }
                       });

        statusBar.Add (
                       new Shortcut
                       {
                           Title = "Toggle Hide",
                           Text = "App",
                           KeyBindingScope = KeyBindingScope.Application,
                           Key = Key.F4.WithCtrl,
                           Action = () =>
                                    {
                                        overlappedView2.Visible = !overlappedView2.Visible;
                                        overlappedView2.Enabled = overlappedView2.Visible;

                                        if (overlappedView2.Visible)
                                        {
                                            overlappedView2.SetFocus ();
                                        }
                                    }
                       });
        overlappedView2.Add (statusBar);

        ColorPicker colorPicker = new ()
        {
            Y = 12,
            Width = Dim.Fill (),
            Id = "colorPicker",
            Style = new ()
            {
                ShowTextFields = true,
                ShowColorName = true
            }
        };
        colorPicker.ApplyStyleChanges ();

        colorPicker.SelectedColor = testFrame.ColorScheme.Normal.Background;
        colorPicker.ColorChanged += ColorPicker_ColorChanged;
        overlappedView2.Add (colorPicker);
        overlappedView2.Width = 50;

        testFrame.Add (overlappedView1);
        testFrame.Add (overlappedView2);

        DatePicker datePicker = new ()
        {
            X = 1,
            Y = 7,
            Id = "datePicker",
            ColorScheme = Colors.ColorSchemes ["Toplevel"],
            ShadowStyle = ShadowStyle.Transparent,
            BorderStyle = LineStyle.Double,
            CanFocus = true, // Can't drag without this? BUGBUG
            TabStop = TabBehavior.TabGroup,
            Arrangement = ViewArrangement.Movable | ViewArrangement.Overlapped
        };
        testFrame.Add (datePicker);

        button = new ()
        {
            X = Pos.AnchorEnd (),
            Y = Pos.AnchorEnd (),
            Title = $"TopButton _{GetNextHotKey ()}"
        };

        testFrame.Add (button);

        editor.AutoSelectSuperView = testFrame;
        testFrame.SetFocus ();
        Application.Run (app);
        timer.Close ();
        app.Dispose ();
        Application.Shutdown ();

        return;

        void ColorPicker_ColorChanged (object sender, ColorEventArgs e)
        {
            testFrame.ColorScheme = testFrame.ColorScheme with { Normal = new (testFrame.ColorScheme.Normal.Foreground, e.CurrentValue) };
        }
    }

    private View CreateOverlappedView (int id, Pos x, Pos y)
    {
        var overlapped = new View
        {
            X = x,
            Y = y,
            Height = Dim.Auto (),
            Width = Dim.Auto (),
            Title = $"Overlapped{id} _{GetNextHotKey ()}",
            ColorScheme = Colors.ColorSchemes ["Toplevel"],
            Id = $"Overlapped{id}",
            ShadowStyle = ShadowStyle.Transparent,
            BorderStyle = LineStyle.Double,
            CanFocus = true, // Can't drag without this? BUGBUG
            TabStop = TabBehavior.TabGroup,
            Arrangement = ViewArrangement.Movable | ViewArrangement.Overlapped
        };

        Button button = new ()
        {
            Title = $"Button{id} _{GetNextHotKey ()}"
        };
        overlapped.Add (button);

        button = new ()
        {
            Y = Pos.Bottom (button),
            Title = $"Button{id} _{GetNextHotKey ()}"
        };
        overlapped.Add (button);

        return overlapped;
    }

    private View CreateTiledView (int id, Pos x, Pos y)
    {
        var overlapped = new View
        {
            X = x,
            Y = y,
            Height = Dim.Auto (),
            Width = Dim.Auto (),
            Title = $"Tiled{id} _{GetNextHotKey ()}",
            Id = $"Tiled{id}",
            BorderStyle = LineStyle.Single,
            CanFocus = true, // Can't drag without this? BUGBUG
            TabStop = TabBehavior.TabStop,
            Arrangement = ViewArrangement.Fixed
        };

        Button button = new ()
        {
            Title = $"Tiled Button{id} _{GetNextHotKey ()}"
        };
        overlapped.Add (button);

        button = new ()
        {
            Y = Pos.Bottom (button),
            Title = $"Tiled Button{id} _{GetNextHotKey ()}"
        };
        overlapped.Add (button);

        return overlapped;
    }

    private char GetNextHotKey () { return (char)('A' + _hotkeyCount++); }
}