basic starscript support + a textbox that provides the starscript executed result & compiled script as well as suggestions

src/Ryujinx/Systems/Starscript/StarscriptTextBox.axaml.cs

@@ -0,0 +1,95 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Styling;
+using FluentAvalonia.UI.Controls;
+using Humanizer;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Controls;
+using Ryujinx.Ava.UI.Helpers;
+using Starscript;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Ryujinx.Ava.Systems.Starscript
+{
+    public partial class StarscriptTextBox : RyujinxControl<StarscriptTextBoxViewModel>
+    {
+        public IReadOnlyList<string> CurrentSuggestions => ViewModel.CurrentSuggestions;
+
+        public string CurrentScriptSource => ViewModel.CurrentScriptSource;
+        public Exception Exception => ViewModel.Exception;
+        public Script CurrentScript => ViewModel.CurrentScript;
+        public StringSegment CurrentScriptResult => ViewModel.CurrentScriptResult;
+        
+        public StarscriptTextBox()
+        {
+            InitializeComponent();
+
+            InputBox.TextInput += HandleTextChanged;
+            
+            InputBox.AsyncPopulator = GetSuggestionsAsync;
+            InputBox.MinimumPopulateDelay = 0.Seconds();
+            InputBox.TextFilter = (_, _) => true;
+            InputBox.TextSelector = (text, suggestion) =>
+            {
+                if (text is not null && suggestion is null)
+                    return text;
+                if (text is null && suggestion is not null)
+                    return suggestion;
+                // ReSharper disable once ConditionIsAlwaysTrueOrFalse
+                if (text is null && suggestion is null)
+                    return string.Empty;
+
+                var sb = new StringBuilder(text.Length + suggestion.Length + 1);
+                sb.Append(text);
+
+                for (int i = 0; i < suggestion.Length - 1; i++)
+                {
+                    if (text.EndsWith(suggestion[..(suggestion.Length - i - 1)]))
+                    {
+                        suggestion = suggestion[(suggestion.Length - i - 1)..];
+                        break;
+                    }
+                }
+
+                sb.Append(suggestion);
+
+                return sb.ToString();
+            };
+
+            Style textStyle = new(x => x.OfType<AutoCompleteBox>().Descendant().OfType<TextBlock>());
+            textStyle.Setters.Add(new Setter(MarginProperty, new Thickness(0, 0)));
+            
+            Styles.Add(textStyle);
+        }
+
+        private Task<IEnumerable<object>> GetSuggestionsAsync(string input, CancellationToken token)
+            => Task.FromResult(ViewModel.GetSuggestions(input, token));
+
+        private void HandleTextChanged(object sender, TextInputEventArgs eventArgs)
+        {
+            if (sender is AutoCompleteBox)
+                ViewModel.CurrentScriptSource = eventArgs.Text;
+        }
+
+        public static StarscriptTextBox Create(StarscriptHypervisor hv)
+            => new() { ViewModel = new StarscriptTextBoxViewModel(hv) };
+        
+        public static async Task Show()
+        {
+            ContentDialog contentDialog = new()
+            {
+                PrimaryButtonText = string.Empty,
+                SecondaryButtonText = string.Empty,
+                CloseButtonText = LocaleManager.Instance[LocaleKeys.UserProfilesClose],
+                Content = new StarscriptTextBox { ViewModel = new() }
+            };
+
+            await ContentDialogHelper.ShowAsync(contentDialog.ApplyStyles());
+        }
+    }
+}