72 lines
2.2 KiB
C#
72 lines
2.2 KiB
C#
namespace Groceries.Components;
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using Humanizer;
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using Microsoft.AspNetCore.Components;
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using System.Linq.Expressions;
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public class PropertyTableColumn<TItem, TProp> : TableColumn<TItem>
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{
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private Expression<Func<TItem, TProp>>? lastAssignedProperty;
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private Func<TItem, TProp>? compiledPropertyExpression;
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private Func<TItem, string?>? cellTextFunc;
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private DataSort<TItem>? sortBy;
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[Parameter, EditorRequired]
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public required Expression<Func<TItem, TProp>> Property { get; set; }
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[Parameter]
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public RenderFragment<TProp>? ChildContent { get; set; }
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[Parameter]
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public string? Format { get; set; }
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[Parameter]
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public override bool Sortable { get; set; }
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public override DataSort<TItem>? SortBy
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{
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get => sortBy;
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set => throw new NotSupportedException();
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}
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protected internal override RenderFragment<TItem> CellContent
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=> ChildContent != null
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? item => ChildContent(compiledPropertyExpression!(item))
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: item => builder => builder.AddContent(0, cellTextFunc?.Invoke(item));
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protected override void OnParametersSet()
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{
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if (Title is null && Property.Body is MemberExpression memberExpression)
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{
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Title = memberExpression.Member.Name;
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}
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if (Align is null && (typeof(TProp) == typeof(int) || typeof(TProp) == typeof(decimal)))
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{
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Align = Components.Align.End;
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}
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if (lastAssignedProperty == Property)
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{
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return;
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}
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lastAssignedProperty = Property;
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compiledPropertyExpression = Property.Compile();
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if (ChildContent == null)
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{
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if (!string.IsNullOrEmpty(Format) &&
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typeof(IFormattable).IsAssignableFrom(Nullable.GetUnderlyingType(typeof(TProp)) ?? typeof(TProp)))
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{
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cellTextFunc = item => ((IFormattable?)compiledPropertyExpression(item))?.ToString(Format, null);
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}
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else
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{
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cellTextFunc = item => compiledPropertyExpression(item)?.ToString();
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}
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}
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sortBy = DataSort.By(Property, key: Title.Camelize());
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}
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}
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