344 lines
12 KiB
C#
344 lines
12 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.ComponentModel;
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using System.Linq;
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using Avalonia.Controls.Primitives;
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using Avalonia.PropertyGrid.Models;
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using Avalonia.PropertyGrid.Services;
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namespace Avalonia.PropertyGrid.Controls;
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/// <summary>
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/// A PropertyGrid control for editing object properties with Xceed-like functionality
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/// </summary>
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public class PropertyGrid : TemplatedControl
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{
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private object? _selectedObject;
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private string _searchText = string.Empty;
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/// <summary>
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/// Defines the SelectedObject property.
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/// </summary>
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public static readonly StyledProperty<object?> SelectedObjectProperty =
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AvaloniaProperty.Register<PropertyGrid, object?>(nameof(SelectedObject));
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/// <summary>
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/// Defines the SearchText property.
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/// </summary>
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public static readonly StyledProperty<string> SearchTextProperty =
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AvaloniaProperty.Register<PropertyGrid, string>(nameof(SearchText), string.Empty);
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/// <summary>
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/// Defines the ShowCategories property.
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/// </summary>
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public static readonly StyledProperty<bool> ShowCategoriesProperty =
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AvaloniaProperty.Register<PropertyGrid, bool>(nameof(ShowCategories), true);
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/// <summary>
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/// Defines the ShowDescriptions property.
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/// </summary>
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public static readonly StyledProperty<bool> ShowDescriptionsProperty =
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AvaloniaProperty.Register<PropertyGrid, bool>(nameof(ShowDescriptions), true);
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/// <summary>
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/// Defines the FilteredProperties property.
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/// </summary>
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public static readonly StyledProperty<ObservableCollection<PropertyItem>> FilteredPropertiesProperty =
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AvaloniaProperty.Register<PropertyGrid, ObservableCollection<PropertyItem>>(
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nameof(FilteredProperties),
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new ObservableCollection<PropertyItem>());
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/// <summary>
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/// Defines the CategoryGroups property.
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/// </summary>
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public static readonly StyledProperty<ObservableCollection<CategoryGroup>> CategoryGroupsProperty =
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AvaloniaProperty.Register<PropertyGrid, ObservableCollection<CategoryGroup>>(
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nameof(CategoryGroups),
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new ObservableCollection<CategoryGroup>());
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static PropertyGrid()
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{
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SelectedObjectProperty.Changed.AddClassHandler<PropertyGrid>((grid, args) =>
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grid.OnSelectedObjectChanged(args));
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SearchTextProperty.Changed.AddClassHandler<PropertyGrid>((grid, args) =>
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grid.OnSearchTextChanged(args));
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}
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/// <summary>
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/// Initializes a new instance of the PropertyGrid class.
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/// </summary>
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public PropertyGrid()
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{
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FilteredProperties = new ObservableCollection<PropertyItem>();
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}
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/// <summary>
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/// The object whose properties are being edited
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/// </summary>
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public object? SelectedObject
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{
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get => GetValue(SelectedObjectProperty);
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set => SetValue(SelectedObjectProperty, value);
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}
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/// <summary>
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/// The search/filter text
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/// </summary>
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public string SearchText
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{
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get => GetValue(SearchTextProperty);
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set => SetValue(SearchTextProperty, value);
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}
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/// <summary>
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/// Whether to show properties grouped by categories
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/// </summary>
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public bool ShowCategories
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{
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get => GetValue(ShowCategoriesProperty);
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set => SetValue(ShowCategoriesProperty, value);
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}
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/// <summary>
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/// Whether to show property descriptions
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/// </summary>
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public bool ShowDescriptions
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{
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get => GetValue(ShowDescriptionsProperty);
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set => SetValue(ShowDescriptionsProperty, value);
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}
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/// <summary>
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/// The filtered list of properties to display
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/// </summary>
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public ObservableCollection<PropertyItem> FilteredProperties
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{
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get => GetValue(FilteredPropertiesProperty);
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set => SetValue(FilteredPropertiesProperty, value);
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}
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/// <summary>
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/// The category groups to display
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/// </summary>
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public ObservableCollection<CategoryGroup> CategoryGroups
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{
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get => GetValue(CategoryGroupsProperty);
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set => SetValue(CategoryGroupsProperty, value);
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}
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private List<PropertyItem> _allProperties = new();
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private void OnSelectedObjectChanged(AvaloniaPropertyChangedEventArgs args)
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{
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_selectedObject = args.NewValue;
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System.Diagnostics.Debug.WriteLine($"PropertyGrid: SelectedObject changed to {_selectedObject?.GetType().Name ?? "null"}");
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RefreshProperties();
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}
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private void OnSearchTextChanged(AvaloniaPropertyChangedEventArgs args)
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{
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_searchText = args.NewValue as string ?? string.Empty;
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FilterProperties();
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}
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/// <summary>
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/// Refreshes the property list from the selected object
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/// </summary>
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public void RefreshProperties()
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{
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_allProperties.Clear();
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FilteredProperties.Clear();
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if (_selectedObject == null)
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{
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System.Diagnostics.Debug.WriteLine("PropertyGrid: RefreshProperties - SelectedObject is null");
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return;
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}
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_allProperties = PropertyItemFactory.CreatePropertyItems(_selectedObject);
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System.Diagnostics.Debug.WriteLine($"PropertyGrid: Created {_allProperties.Count} property items");
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// Subscribe to property changes
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foreach (var item in _allProperties)
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{
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item.PropertyChanged += OnPropertyItemChanged;
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}
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FilterProperties();
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System.Diagnostics.Debug.WriteLine($"PropertyGrid: FilteredProperties count = {FilteredProperties.Count}");
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}
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private void OnPropertyItemChanged(object? sender, PropertyChangedEventArgs e)
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{
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if (e.PropertyName == nameof(PropertyItem.IsExpanded) && sender is PropertyItem item)
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{
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HandlePropertyExpansion(item);
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}
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}
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private void HandlePropertyExpansion(PropertyItem item)
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{
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System.Diagnostics.Debug.WriteLine($"HandlePropertyExpansion: {item.DisplayName}, IsExpanded={item.IsExpanded}, Children.Count={item.Children.Count}");
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if (item.IsExpanded && item.Value != null)
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{
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// Load child properties if not already loaded
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if (item.Children.Count == 0)
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{
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item.Children = PropertyItemFactory.CreatePropertyItems(item.Value, item.IndentLevel + 1);
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System.Diagnostics.Debug.WriteLine($" Loaded {item.Children.Count} children for {item.DisplayName}");
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// Subscribe to property changes for children
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foreach (var child in item.Children)
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{
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child.PropertyChanged += OnPropertyItemChanged;
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}
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}
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// Insert children after the parent in the filtered list
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var parentIndex = FilteredProperties.IndexOf(item);
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if (parentIndex >= 0)
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{
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int insertedCount = 0;
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for (int i = 0; i < item.Children.Count; i++)
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{
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// Only insert if not already in the list
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if (!FilteredProperties.Contains(item.Children[i]))
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{
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FilteredProperties.Insert(parentIndex + i + 1, item.Children[i]);
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insertedCount++;
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}
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}
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System.Diagnostics.Debug.WriteLine($" Inserted {insertedCount} children into FilteredProperties at index {parentIndex + 1}");
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}
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// Also insert into CategoryGroups if ShowCategories is enabled
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if (ShowCategories)
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{
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foreach (var categoryGroup in CategoryGroups)
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{
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var itemIndexInCategory = categoryGroup.Properties.IndexOf(item);
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if (itemIndexInCategory >= 0)
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{
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// Insert children after the parent in the category
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for (int i = 0; i < item.Children.Count; i++)
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{
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if (!categoryGroup.Properties.Contains(item.Children[i]))
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{
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categoryGroup.Properties.Insert(itemIndexInCategory + i + 1, item.Children[i]);
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}
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}
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System.Diagnostics.Debug.WriteLine($" Inserted {item.Children.Count} children into category '{categoryGroup.CategoryName}'");
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break;
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}
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}
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}
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}
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else if (!item.IsExpanded)
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{
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// Remove children from the filtered list (but keep them in item.Children for re-expansion)
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int removedCount = 0;
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foreach (var child in item.Children)
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{
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if (FilteredProperties.Remove(child))
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{
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removedCount++;
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}
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// If child is also expanded, recursively collapse it
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if (child.IsExpanded)
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{
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child.IsExpanded = false;
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}
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}
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System.Diagnostics.Debug.WriteLine($" Removed {removedCount} children from FilteredProperties");
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// Also remove from CategoryGroups if ShowCategories is enabled
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if (ShowCategories)
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{
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foreach (var categoryGroup in CategoryGroups)
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{
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if (categoryGroup.Properties.Contains(item))
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{
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int categoryRemovedCount = 0;
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foreach (var child in item.Children)
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{
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if (categoryGroup.Properties.Remove(child))
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{
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categoryRemovedCount++;
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}
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}
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System.Diagnostics.Debug.WriteLine($" Removed {categoryRemovedCount} children from category '{categoryGroup.CategoryName}'");
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break;
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}
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}
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}
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}
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}
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private void FilterProperties()
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{
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FilteredProperties.Clear();
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CategoryGroups.Clear();
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var filtered = _allProperties.AsEnumerable();
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// Apply search filter
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if (!string.IsNullOrWhiteSpace(_searchText))
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{
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var searchLower = _searchText.ToLowerInvariant();
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filtered = filtered.Where(p =>
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p.DisplayName.ToLowerInvariant().Contains(searchLower) ||
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(p.Category?.ToLowerInvariant().Contains(searchLower) ?? false) ||
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(p.Description?.ToLowerInvariant().Contains(searchLower) ?? false));
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}
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// Populate flat list
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foreach (var item in filtered)
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{
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FilteredProperties.Add(item);
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}
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System.Diagnostics.Debug.WriteLine($"PropertyGrid: FilterProperties - ShowCategories={ShowCategories}, filtered count={filtered.Count()}");
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// Group by category for category view
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if (ShowCategories)
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{
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var groupedByCategory = filtered
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.GroupBy(p => p.Category ?? "Misc")
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.OrderBy(g => g.Key);
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foreach (var group in groupedByCategory)
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{
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var categoryGroup = new CategoryGroup
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{
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CategoryName = group.Key
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};
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foreach (var item in group.OrderBy(p => p.Order).ThenBy(p => p.DisplayName))
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{
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categoryGroup.Properties.Add(item);
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}
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CategoryGroups.Add(categoryGroup);
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System.Diagnostics.Debug.WriteLine($"PropertyGrid: Added category '{categoryGroup.CategoryName}' with {categoryGroup.PropertyCount} properties");
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}
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System.Diagnostics.Debug.WriteLine($"PropertyGrid: Total CategoryGroups={CategoryGroups.Count}");
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}
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}
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/// <summary>
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/// Refreshes all property values from the source object
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/// </summary>
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public void RefreshValues()
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{
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foreach (var item in _allProperties)
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{
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item.RefreshValue();
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}
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}
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}
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