Terminal.Gui/UICatalog/Scenarios/WindowsAndFrameViews.cs

using System.Collections.Generic;
using System.Linq;
using Terminal.Gui;

namespace UICatalog.Scenarios;
[ScenarioMetadata (Name: "Windows & FrameViews", Description: "Stress Tests Windows, sub-Windows, and FrameViews.")]
[ScenarioCategory ("Layout")]
public class WindowsAndFrameViews : Scenario {

	public override void Setup ()
	{
		static int About ()
		{
			return MessageBox.Query ("About UI Catalog", "UI Catalog is a comprehensive sample library for Terminal.Gui", "Ok");
		}

		int margin = 2;
		int padding = 1;
		int contentHeight = 7;

		// list of Windows we create
		var listWin = new List<View> ();

		//Ignore the Win that UI Catalog created and create a new one
		Application.Top.Remove (Win);
		Win?.Dispose ();

		Win = new Window () {
			Title = $"{listWin.Count} - Scenario: {GetName ()}",
			X = Pos.Center (),
			Y = 1,
			Width = Dim.Fill (15),
			Height = 10,
			ColorScheme = Colors.Dialog
		};
		Win.Padding.Thickness = new Thickness (padding);
		Win.Margin.Thickness = new Thickness (margin);

		var paddingButton = new Button ($"Padding of container is {padding}") {
			X = Pos.Center (),
			Y = 0,
			ColorScheme = Colors.Error,
		};
		paddingButton.Clicked += (s, e) => About ();
		Win.Add (paddingButton);
		Win.Add (new Button ("Press ME! (Y = Pos.AnchorEnd(1))") {
			X = Pos.Center (),
			Y = Pos.AnchorEnd (1),
			ColorScheme = Colors.Error
		});
		Application.Top.Add (Win);

		// add it to our list
		listWin.Add (Win);

		// create 3 more Windows in a loop, adding them Application.Top
		// Each with a
		//	button
		//  sub Window with
		//		TextField
		//	sub FrameView with
		// 
		for (var pad = 0; pad < 3; pad++) {
			Window win = null;
			win = new Window () {
				Title = $"{listWin.Count} - Window Loop - padding = {pad}",
				X = margin,
				Y = Pos.Bottom (listWin.Last ()) + (margin),
				Width = Dim.Fill (margin),
				Height = contentHeight + (pad * 2) + 2,
			};
			win.Padding.Thickness = new Thickness (pad);

			win.ColorScheme = Colors.Dialog;
			var pressMeButton = new Button ("Press me! (Y = 0)") {
				X = Pos.Center (),
				Y = 0,
				ColorScheme = Colors.Error,
			};
			pressMeButton.Clicked += (s, e) =>
				MessageBox.ErrorQuery (win.Title, "Neat?", "Yes", "No");
			win.Add (pressMeButton);
			var subWin = new Window () {
				Title = "Sub Window",
				X = Pos.Percent (0),
				Y = 1,
				Width = Dim.Percent (50),
				Height = 5,
				ColorScheme = Colors.Base,
				Text = "The Text in the Window",
			};
			subWin.Add (new TextField ("Edit me! " + win.Title) {
				Y = 1,
				ColorScheme = Colors.Error
			});
			win.Add (subWin);
			var frameView = new FrameView ("This is a Sub-FrameView") {
				X = Pos.Percent (50),
				Y = 1,
				Width = Dim.Percent (100, true), // Or Dim.Percent (50)
				Height = 5,
				ColorScheme = Colors.Base,
				Text = "The Text in the FrameView",

			};
			frameView.Add (new TextField ("Edit Me!") {
				Y = 1,
			});
			win.Add (frameView);

			Application.Top.Add (win);
			listWin.Add (win);
		}

		// Add a FrameView (frame) to Application.Top
		// Position it at Bottom, using the list of Windows we created above.
		// Fill it with
		//   a label
		//   a SubWindow containing (subWinofFV)
		//      a TextField
		//	    two checkboxes
		//   a Sub FrameView containing (subFrameViewofFV)
		//      a TextField
		//      two CheckBoxes	
		//   a checkbox
		//   a checkbox
		FrameView frame = null;
		frame = new FrameView ($"This is a FrameView") {
			X = margin,
			Y = Pos.Bottom (listWin.Last ()) + (margin / 2),
			Width = Dim.Fill (margin),
			Height = contentHeight + 2,  // 2 for default padding
		};
		frame.ColorScheme = Colors.Dialog;
		frame.Add (new Label ("This is a Label! (Y = 0)") {
			X = Pos.Center (),
			Y = 0,
			ColorScheme = Colors.Error,
			//Clicked = () => MessageBox.ErrorQuery (frame.Title, "Neat?", "Yes", "No")
		});
		var subWinofFV = new Window () {
			Title = "This is a Sub-Window",
			X = Pos.Percent (0),
			Y = 1,
			Width = Dim.Percent (50),
			Height = Dim.Fill () - 1,
			ColorScheme = Colors.Base,
			Text = "The Text in the Window",
		};
		subWinofFV.Add (new TextField ("Edit Me") {
			ColorScheme = Colors.Error
		});

		subWinofFV.Add (new CheckBox ("Check me") { Y = 1 });
		subWinofFV.Add (new CheckBox ("Or, Check me") { Y = 2 });

		frame.Add (subWinofFV);
		var subFrameViewofFV = new FrameView ("this is a Sub-FrameView") {
			X = Pos.Percent (50),
			Y = 1,
			Width = Dim.Percent (100),
			Height = Dim.Fill () - 1,
			ColorScheme = Colors.Base,
			Text = "The Text in the FrameView",
		};
		subFrameViewofFV.Add (new TextField (0, 0, 15, "Edit Me"));

		subFrameViewofFV.Add (new CheckBox ("Check me") { Y = 1 });
		// BUGBUG: This checkbox is not shown even though frameViewFV has 3 rows in 
		// its client area. #522
		subFrameViewofFV.Add (new CheckBox ("Or, Check me") { Y = 2 });

		frame.Add (new CheckBox ("Btn1 (Y = Pos.AnchorEnd (1))") {
			X = 0,
			Y = Pos.AnchorEnd (1),
		});
		CheckBox c = new CheckBox ("Btn2 (Y = Pos.AnchorEnd (1))") {
			Y = Pos.AnchorEnd (1),
		};
		c.X = Pos.AnchorEnd () - (Pos.Right (c) - Pos.Left (c));
		frame.Add (c);

		frame.Add (subFrameViewofFV);

		Application.Top.Add (frame);
		listWin.Add (frame);

		Application.Top.ColorScheme = Colors.Base;
	}
}