initial commit

Avalonia.PropertyGrid/Models/CategoryGroup.cs

@@ -0,0 +1,54 @@
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+
+namespace Avalonia.PropertyGrid.Models;
+
+/// <summary>
+/// Represents a category group in the PropertyGrid
+/// </summary>
+public class CategoryGroup : INotifyPropertyChanged
+{
+    private bool _isExpanded = true;
+
+    /// <summary>
+    /// Occurs when a property value changes.
+    /// </summary>
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    /// <summary>
+    /// The category name
+    /// </summary>
+    public string CategoryName { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Properties in this category
+    /// </summary>
+    public ObservableCollection<PropertyItem> Properties { get; set; } = new();
+
+    /// <summary>
+    /// Whether the category is expanded
+    /// </summary>
+    public bool IsExpanded
+    {
+        get => _isExpanded;
+        set
+        {
+            if (_isExpanded != value)
+            {
+                _isExpanded = value;
+                OnPropertyChanged(nameof(IsExpanded));
+            }
+        }
+    }
+
+    /// <summary>
+    /// Number of properties in this category
+    /// </summary>
+    public int PropertyCount => Properties.Count;
+
+    protected virtual void OnPropertyChanged(string propertyName)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+    }
+}