MesenCE/UI/ThirdParty/DataBox/DataBoxRow.cs

using Avalonia.Controls;
using Avalonia.Controls.Primitives;
using Avalonia.Controls.Shapes;
using Avalonia.Styling;
using DataBoxControl.Primitives;
using System;

namespace DataBoxControl;

public class DataBoxRow : ListBoxItem
{
	private Rectangle? _bottomGridLine;

	protected override Type StyleKeyOverride => typeof(DataBoxRow);

	internal DataBox? DataBox { get; set; }

	internal DataBoxCellsPresenter? CellsPresenter { get; set; }

	protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
	{
		base.OnApplyTemplate(e);

		_bottomGridLine = e.NameScope.Find<Rectangle>("PART_BottomGridLine");

		InvalidateBottomGridLine();

		CellsPresenter = e.NameScope.Find<DataBoxCellsPresenter>("PART_CellsPresenter");

		if(CellsPresenter is { }) {
			CellsPresenter.DataBox = DataBox;
			CellsPresenter.Attach();
		}
	}

	private void InvalidateBottomGridLine()
	{
		if(_bottomGridLine is { } && DataBox is { }) {
			bool newVisibility =
				 DataBox.GridLinesVisibility == DataBoxGridLinesVisibility.Horizontal
				 || DataBox.GridLinesVisibility == DataBoxGridLinesVisibility.All;

			if(newVisibility != _bottomGridLine.IsVisible) {
				_bottomGridLine.IsVisible = newVisibility;
			}

			_bottomGridLine.Fill = DataBox.HorizontalGridLinesBrush;
		}
	}
}