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+using NStack;
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+using System;
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+using System.Collections.Generic;
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+using System.Linq;
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+using System.Reflection;
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+using System.Text;
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+using Terminal.Gui;
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+
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+namespace UICatalog {
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+ /// <summary>
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+ /// This Scenario demonstrates how to use Termina.gui's Dim and Pos Layout System.
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+ /// [x] - Using Dim.Fill to fill a window
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+ /// [x] - Using Dim.Fill and Dim.Pos to automatically align controls based on an initial control
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+ /// [ ] - ...
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+ /// </summary>
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+ [ScenarioMetadata (Name: "All Views Tester", Description: "Provides a test UI for all classes derived from View")]
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+ [ScenarioCategory ("Layout")]
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+ class AllViewsTester : Scenario {
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+ private static Window _leftPane;
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+ private static ListView _classListView;
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+ private static FrameView _settingsPane;
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+ private static FrameView _hostPane;
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+
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+ Dictionary<string, Type> _viewClasses;
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+ Type _curClass = null;
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+ View _curView = null;
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+ StatusItem _currentClassStatusItem;
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+
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+
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+ // Settings
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+ CheckBox _computedCheckBox;
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+
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+
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+ public override void Init (Toplevel top)
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+ {
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+ Application.Init ();
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+
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+ Top = top;
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+ if (Top == null) {
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+ Top = Application.Top;
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+ }
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+
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+ //Win = new Window ($"CTRL-Q to Close - Scenario: {GetName ()}") {
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+ // X = 0,
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+ // Y = 0,
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+ // Width = Dim.Fill (),
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+ // Height = Dim.Fill ()
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+ //};
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+ //Top.Add (Win);
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+ }
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+
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+ public override void Setup ()
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+ {
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+ _currentClassStatusItem = new StatusItem (Key.Unknown, "Class:", null);
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+ var statusBar = new StatusBar (new StatusItem [] {
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+ new StatusItem(Key.ControlQ, "~^Q~ Quit", () => Quit()),
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+ _currentClassStatusItem,
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+ });
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+ Top.Add (statusBar);
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+
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+ _viewClasses = GetAllViewClassesCollection ()
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+ .OrderBy (t => t.Name)
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+ .Select (t => new KeyValuePair<string, Type> (t.Name, t))
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+ .ToDictionary (t => t.Key, t => t.Value);
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+
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+ _leftPane = new Window ("Classes") {
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+ X = 0,
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+ Y = 0, // for menu
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+ Width = 15,
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+ Height = Dim.Fill (),
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+ CanFocus = false,
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+ ColorScheme = Colors.TopLevel,
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+ };
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+
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+ _classListView = new ListView (_viewClasses.Keys.ToList()) {
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+ X = 0,
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+ Y = 0,
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+ Width = Dim.Fill (0),
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+ Height = Dim.Fill (), // for status bar
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+ AllowsMarking = false,
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+ ColorScheme = Colors.TopLevel,
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+ };
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+ _classListView.OpenSelectedItem += (o, a) => {
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+ Top.SetFocus (_settingsPane);
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+ };
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+ _classListView.SelectedChanged += (sender, args) => {
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+ _curClass = _viewClasses.Values.ToArray()[_classListView.SelectedItem];
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+ SetCurrentClass ();
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+ };
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+ _leftPane.Add (_classListView);
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+
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+ _settingsPane = new FrameView ("Settings") {
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+ X = Pos.Right(_leftPane),
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+ Y = 0, // for menu
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+ Width = Dim.Fill (),
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+ Height = 10,
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+ CanFocus = false,
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+ ColorScheme = Colors.TopLevel,
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+ };
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+ _computedCheckBox = new CheckBox ("Computed Layout", true) { X = 0, Y = 0 };
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+ _computedCheckBox.Toggled += (sender, previousState) => {
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+ if (_curView != null) {
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+ _curView.LayoutStyle = previousState ? LayoutStyle.Absolute : LayoutStyle.Computed;
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+ _hostPane.LayoutSubviews ();
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+ }
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+
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+ };
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+ _settingsPane.Add (_computedCheckBox);
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+
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+ _hostPane = new FrameView ("") {
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+ X = Pos.Right (_leftPane) + 2,
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+ Y = Pos.Bottom(_settingsPane) + 2,
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+ Width = Dim.Fill (2),
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+ Height = Dim.Fill (3), // + 1 for status bar
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+ ColorScheme = Colors.Dialog,
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+ };
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+
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+ Top.Add (_leftPane, _settingsPane, _hostPane);
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+
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+ _curClass = _viewClasses.First().Value;
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+ SetCurrentClass ();
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+ }
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+
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+ List<Type> GetAllViewClassesCollection ()
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+ {
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+ List<Type> types = new List<Type> ();
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+ foreach (Type type in typeof (View).Assembly.GetTypes ()
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+ .Where (myType => myType.IsClass && !myType.IsAbstract && myType.IsPublic && myType.IsSubclassOf (typeof (View)))) {
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+ types.Add (type);
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+ }
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+ return types;
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+ }
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+
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+ void SetCurrentClass ()
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+ {
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+ _hostPane.Title = _currentClassStatusItem.Title = $"Class: {_curClass.Name}";
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+
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+ // Remove existing class, if any
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+ if (_curView != null) {
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+ _hostPane.Remove (_curView);
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+ _hostPane.Clear ();
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+ _curView = null;
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+ }
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+
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+ // Instantiate view
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+ _curView = (View)Activator.CreateInstance (_curClass);
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+
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+ _curView.X = Pos.Center ();
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+ _curView.Y = Pos.Center ();
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+ _curView.Width = Dim.Fill (5);
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+ _curView.Height = Dim.Fill (5);
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+
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+ // Set the colorscheme to make it stand out
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+ _curView.ColorScheme = Colors.Base;
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+
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+ // If the view supports a Text property, set it so we have something to look at
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+ if (_curClass.GetProperty ("Text") != null) {
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+ try {
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+ _curView.GetType ().GetProperty ("Text")?.GetSetMethod ()?.Invoke (_curView, new [] { ustring.Make ("Test Text") });
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+ }
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+ catch (TargetInvocationException e) {
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+ MessageBox.ErrorQuery ("Exception", e.InnerException.Message, "Ok");
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+ _hostPane.Remove (_curView);
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+ _hostPane.Clear ();
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+ _curView = null;
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+ }
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+ }
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+
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+ if (_curView == null) return;
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+
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+ // If the view supports a Title property, set it so we have something to look at
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+ if (_curClass.GetProperty ("Title") != null) {
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+ _curView?.GetType ().GetProperty ("Title")?.GetSetMethod ()?.Invoke (_curView, new [] { ustring.Make ("Test Title") });
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+ }
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+
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+ // Set Settings
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+ _computedCheckBox.Checked = _curView.LayoutStyle == LayoutStyle.Computed;
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+
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+
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+ // Add
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+ _hostPane.Add (_curView);
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+ _hostPane.LayoutSubviews ();
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+ _hostPane.Clear ();
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+ _hostPane.SetNeedsDisplay ();
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+ }
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+
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+ public override void Run ()
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+ {
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+ base.Run ();
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+ }
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+
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+ private void Quit ()
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+ {
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+ Application.RequestStop ();
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+ }
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+ }
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+}
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Charlie Kindel