sbox-public/game/addons/base/code/UI/ControlSheet/ControlSheet.cs

using Sandbox.Internal;
namespace Sandbox.UI;

/// <summary>
/// A controlsheet is a panel that you can populate with a SerializedObject's properties.
/// </summary>
public class ControlSheet : Panel, IControlSheet
{
	/// <summary>
	/// The object we're trying to display properties for.
	/// </summary>
	[Parameter] public object Target { get; set; }

	/// <summary>
	/// body panel. Gets deleted and recreated on Rebuild()
	/// </summary>
	Panel _body;

	/// <summary>
	/// Filter any properties that are added to this
	/// </summary>
	[Parameter] public Func<SerializedProperty, bool> PropertyFilter { get; set; }

	/// <summary>
	/// Rebuild these controls. This will delete the current body panel and recreate it, then add all properties from the target object.
	/// </summary>
	public void Rebuild()
	{
		IControlSheet sheet = this;
		_body?.Delete();

		_body = AddChild<Panel>();
		_body.AddClass( "body" );

		if ( Target is null ) return;

		var so = Game.TypeLibrary.GetSerializedObject( Target );
		IControlSheet.FilterSortAndAdd( sheet, so.ToList() );
	}

	int _hash;

	public override void Tick()
	{
		base.Tick();

		var hash = HashCode.Combine( Target );
		if ( hash != _hash )
		{
			_hash = hash;
			Rebuild();
		}
	}

	/// <summary>
	/// Called by IControlSheet logic to add a feature
	/// </summary>
	void IControlSheet.AddFeature( IControlSheet.Feature feature )
	{
		// Add feature tab
		Log.Warning( "TODO: TODO handle Feature Sheet" );

	}

	/// <summary>
	/// Called by IControlSheet logic to add a group
	/// </summary>
	void IControlSheet.AddGroup( IControlSheet.Group group )
	{
		var g = _body.AddChild<ControlSheetGroup>();

		var title = g.Header.AddChild<Label>( "title" );
		title.Text = group.Name;

		foreach ( var prop in group.Properties )
		{
			var row = g.Body.AddChild<ControlSheetRow>();
			row.Initialize( prop );
		}
	}

	/// <summary>
	/// Called by IControlSheet logic to filter properties.
	/// </summary>
	bool IControlSheet.TestFilter( SerializedProperty prop )
	{
		return PropertyFilter?.Invoke( prop ) ?? true;
	}
}