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https://gitee.com/ant-design-blazor/ant-design-blazor.git
synced 2024-12-02 12:07:44 +08:00
603 lines
20 KiB
C#
603 lines
20 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.ComponentModel;
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using System.ComponentModel.DataAnnotations;
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using System.Linq.Expressions;
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using System.Reflection;
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using AntDesign.Internal;
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using AntDesign.TableModels;
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using Microsoft.AspNetCore.Components;
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using System.Text.Json;
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using AntDesign.Core.Helpers;
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using AntDesign.Filters;
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using System.Threading.Tasks;
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using AntDesign.Core.Extensions;
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using Microsoft.JSInterop;
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namespace AntDesign
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{
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public partial class Column<TData> : ColumnBase, IFieldColumn
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{
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[CascadingParameter(Name = "AntDesign.Column.Blocked")]
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public bool Blocked { get; set; }
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[CascadingParameter(Name = "ItemType")]
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public Type ItemType { get; set; }
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[Parameter]
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public EventCallback<TData> FieldChanged { get; set; }
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[Parameter]
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public Expression<Func<TData>> FieldExpression { get; set; }
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[Parameter]
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public RenderFragment FilterDropdown { get; set; }
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[Parameter]
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public TData Field
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{
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get
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{
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return GetValue != null ? GetValue(RowData) : _field;
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}
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set
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{
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if (GetValue == null)
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{
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_field = value;
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}
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}
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}
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private TData _field;
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public override string Title { get => base.Title ?? DisplayName ?? FieldName; set => base.Title = value; }
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[Parameter]
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public string DataIndex { 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 bool Sortable { get; set; }
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[Parameter]
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public Func<TData, TData, int> SorterCompare { get; set; }
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[Parameter]
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public int SorterMultiple { get; set; }
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[Parameter]
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public bool ShowSorterTooltip { get; set; } = true;
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[Parameter]
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public SortDirection[] SortDirections { get; set; }
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[Parameter]
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public SortDirection DefaultSortOrder { get; set; }
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[Parameter]
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public Func<CellData, Dictionary<string, object>> OnCell { get; set; }
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[Parameter]
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public Func<Dictionary<string, object>> OnHeaderCell { get; set; }
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private bool _filterable;
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private bool _hasFilterableAttribute;
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[Parameter]
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public bool Filterable
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{
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get => _filterable;
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set
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{
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_filterable = value;
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_hasFilterableAttribute = true;
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}
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}
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[Parameter]
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public bool Grouping { get; set; }
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[Parameter]
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public virtual Func<TData, object> GroupBy { get; set; }
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private IEnumerable<TableFilter> _filters;
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private bool _hasFiltersAttribute;
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[Parameter]
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public IEnumerable<TableFilter<TData>> Filters
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{
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get => _filters as IEnumerable<TableFilter<TData>>;
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set
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{
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_filters = value;
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_hasFiltersAttribute = true;
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}
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}
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[Parameter]
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public IEnumerable<TableFilter> DefaultFilters { get; set; }
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[Parameter]
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public bool FilterMultiple { get; set; } = true;
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[Parameter]
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public IFieldFilterType FieldFilterType { get; set; }
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/// <summary>
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/// Function that determines if the row is displayed when filtered
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/// <para>
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/// Parameter 1: The value of the filter item
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/// </para>
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/// <para>
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/// Parameter 2: The value of the column
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/// </para>
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/// </summary>
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[Parameter]
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public Expression<Func<TData, TData, bool>> OnFilter { get; set; }
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/// <summary>
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/// Whether the dataSource is filtered. Filter icon will be actived when it is true.
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/// </summary>
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[Parameter]
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public bool Filtered { get; set; }
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[Parameter]
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public virtual RenderFragment<CellData<TData>> CellRender { get; set; }
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private TableFilterType _columnFilterType;
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private IFieldFilterType _fieldFilterType;
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private Type _columnDataType;
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public string DisplayName { get; private set; }
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public string FieldName { get; private set; }
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public ITableSortModel SortModel { get; private set; }
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public ITableFilterModel FilterModel { get; private set; }
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private SortDirection _sortDirection;
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protected Func<RowData, TData> GetValue { get; set; }
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protected LambdaExpression GetFieldExpression { get; set; }
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void IFieldColumn.ClearSorter()
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{
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SetSorter(SortDirection.None);
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if (FieldExpression == null)
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{
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StateHasChanged();
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}
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}
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private static readonly EventCallbackFactory _callbackFactory = new();
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private bool _filterOpened;
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private bool _hasFilterSelected;
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private string[] _selectedFilterValues;
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private RenderFragment _renderDefaultFilterDropdown;
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private bool IsFiexedEllipsis => Ellipsis && Fixed is "left" or "right";
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private bool IsFiltered => _hasFilterSelected || Filtered;
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protected override void OnInitialized()
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{
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base.OnInitialized();
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Sortable = Sortable || SorterMultiple != default || SorterCompare != default || DefaultSortOrder != default || SortDirections?.Any() == true;
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if (IsHeader)
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{
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if (FieldExpression != null)
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{
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if (FieldExpression.Body is not MemberExpression memberExp)
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{
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throw new ArgumentException("'Field' parameter must be child member");
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}
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var paramExp = Expression.Parameter(ItemType);
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var bodyExp = Expression.MakeMemberAccess(paramExp, memberExp.Member);
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GetFieldExpression = Expression.Lambda(bodyExp, paramExp);
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}
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else if (DataIndex != null)
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{
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(_, GetFieldExpression) = ColumnDataIndexHelper<TData>.GetDataIndexConfig(this);
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}
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if (GetFieldExpression != null)
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{
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var member = ColumnExpressionHelper.GetReturnMemberInfo(GetFieldExpression);
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DisplayName = member?.GetCustomAttribute<DisplayNameAttribute>(true)?.DisplayName
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?? member?.GetCustomAttribute<DisplayAttribute>(true)?.GetName()
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?? member?.Name;
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FieldName = DataIndex ?? member?.Name;
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}
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if (Sortable && GetFieldExpression != null)
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{
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SortModel = new SortModel<TData>(this, GetFieldExpression, FieldName, SorterMultiple, DefaultSortOrder, SorterCompare);
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}
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if (Grouping)
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{
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Table.AddGroupColumn(this);
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}
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else
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{
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Table.RemoveGroupColumn(this);
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}
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}
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else if (IsBody)
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{
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if (!Table.HasRowTemplate)
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{
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SortModel = (Context.HeaderColumns.LastOrDefault(x => x.ColIndex == ColIndex) as IFieldColumn)?.SortModel;
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}
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if (DataIndex != null)
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{
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(GetValue, _) = ColumnDataIndexHelper<TData>.GetDataIndexConfig(this);
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}
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if (RowData.IsGrouping)
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{
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ColSpan = ColIndex == Table.TreeExpandIconColumnIndex ? Context.Columns.Count + 1 : 0;
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}
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}
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SortDirections ??= Table.SortDirections;
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Sortable = Sortable || SortModel != null;
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_sortDirection = SortModel?.SortDirection ?? DefaultSortOrder ?? SortDirection.None;
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_filterable = _filterable || FilterDropdown != null;
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if (IsHeader)
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{
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if (_hasFiltersAttribute)
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{
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if (!_hasFilterableAttribute) Filterable = true;
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_columnFilterType = TableFilterType.List;
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}
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else if (_hasFilterableAttribute)
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{
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_columnDataType = THelper.GetUnderlyingType<TData>();
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_columnFilterType = TableFilterType.FieldType;
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if (FieldFilterType is null)
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{
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if (_columnDataType == typeof(bool))
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{
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_columnFilterType = TableFilterType.List;
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_filters = new List<TableFilter>();
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var trueFilterOption = GetNewFilter();
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trueFilterOption.Text = Table.Locale.FilterOptions.True;
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trueFilterOption.Value = true;
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((List<TableFilter>)_filters).Add(trueFilterOption);
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var falseFilterOption = GetNewFilter();
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falseFilterOption.Text = Table.Locale.FilterOptions.False;
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falseFilterOption.Value = false;
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((List<TableFilter>)_filters).Add(falseFilterOption);
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}
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else if (_columnDataType.IsEnum && _columnDataType.GetCustomAttribute<FlagsAttribute>() == null)
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{
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_columnFilterType = TableFilterType.List;
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_filters = EnumHelper<TData>.GetValueLabelList().Select(item =>
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{
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var filterOption = GetNewFilter();
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filterOption.Text = item.Label;
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filterOption.Value = item.Value;
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return filterOption;
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}).ToList();
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}
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}
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if (_columnFilterType == TableFilterType.List && THelper.IsTypeNullable<TData>())
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{
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var nullFilterOption = GetNewFilter();
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nullFilterOption.Text = Table.Locale.FilterOptions.Operator(TableFilterCompareOperator.IsNull);
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nullFilterOption.Value = null;
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((List<TableFilter>)_filters).Add(nullFilterOption);
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}
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}
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Context.HeaderColumnInitialed(this);
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_renderDefaultFilterDropdown = RenderDefaultFilterDropdown;
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}
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ClassMapper
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.If("ant-table-column-has-sorters", () => Sortable)
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.If($"ant-table-column-sort", () => Sortable && SortModel != null && SortModel.SortDirection.IsIn(SortDirection.Ascending, SortDirection.Descending));
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}
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protected override void OnParametersSet()
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{
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base.OnParametersSet();
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if (IsHeader)
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{
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if (_columnFilterType == TableFilterType.FieldType && _fieldFilterType == null && Filterable)
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{
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_fieldFilterType = FieldFilterType ?? Table.FieldFilterTypeResolver.Resolve<TData>();
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if (DefaultFilters is null)
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ResetFieldFilters();
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else
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{
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_filters = DefaultFilters;
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_hasFilterSelected = DefaultFilters.Any(f => f.Selected);
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}
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}
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FilterModel = _filterable && _filters?.Any(x => x.Selected) == true ?
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new FilterModel<TData>(this, GetFieldExpression, FieldName, OnFilter, _filters.Where(x => x.Selected).ToList(), _columnFilterType, _fieldFilterType) :
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null;
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}
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}
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protected override bool ShouldRender()
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{
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if (Blocked) return false;
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return true;
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}
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private void HandleSort()
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{
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if (Sortable)
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{
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SetSorter(NextSortDirection());
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Table.ColumnSorterChange(this);
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}
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}
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private string SorterTooltip
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{
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get
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{
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var next = NextSortDirection();
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return next?.Value switch
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{
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0 => Table.Locale.CancelSort,
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1 => Table.Locale.TriggerAsc,
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2 => Table.Locale.TriggerDesc,
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_ => Table.Locale.CancelSort
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};
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}
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}
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private SortDirection NextSortDirection()
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{
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if (_sortDirection == SortDirection.None)
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{
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return SortDirections[0];
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}
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else
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{
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var index = Array.IndexOf(SortDirections, _sortDirection);
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if (index >= SortDirections.Length - 1)
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{
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return SortDirection.None;
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}
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return SortDirections[index + 1];
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}
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}
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IQueryable<IGrouping<object, TItem>> IFieldColumn.Group<TItem>(IQueryable<TItem> source)
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{
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var param = Expression.Parameter(typeof(TItem), "item");
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Expression field = Expression.Invoke(GetFieldExpression, param);
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if (GroupBy != null)
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{
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var instance = Expression.Constant(GroupBy.Target);
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field = Expression.Call(instance, GroupBy.Method, field);
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}
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var body = Expression.Convert(field, typeof(object));
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var lambda = Expression.Lambda<Func<TItem, object>>(body, param);
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return source.GroupBy(lambda);
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}
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private void SetSorter(SortDirection sortDirection)
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{
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_sortDirection = sortDirection;
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SortModel?.SetSortDirection(sortDirection);
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}
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private void SetFilterCompareOperator(TableFilter filter, TableFilterCompareOperator compareOperator)
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{
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filter.FilterCompareOperator = compareOperator;
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}
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private void SetFilterCondition(TableFilter filter, TableFilterCondition filterCondition)
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{
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filter.FilterCondition = filterCondition;
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}
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private void FilterSelected(TableFilter filter)
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{
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if (_columnFilterType == TableFilterType.FieldType) return;
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if (!FilterMultiple)
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{
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_filters.ForEach(x => x.Selected = false);
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filter.Selected = true;
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}
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else
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{
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filter.Selected = !filter.Selected;
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}
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_selectedFilterValues = _filters.Where(x => x.Selected).Select(x => x.Value?.ToString()).ToArray();
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StateHasChanged();
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}
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private void FilterConfirm(bool isReset = false)
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{
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_filterOpened = false;
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if (!isReset && _columnFilterType == TableFilterType.FieldType)
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{
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_filters?.ForEach(f =>
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{
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f.Selected =
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f.Value != null ||
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f.FilterCompareOperator == TableFilterCompareOperator.IsNotNull ||
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f.FilterCompareOperator == TableFilterCompareOperator.IsNull;
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});
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}
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_hasFilterSelected = _filters?.Any(x => x.Selected) == true;
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FilterModel = _hasFilterSelected
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? new FilterModel<TData>(this, GetFieldExpression, FieldName, OnFilter,
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_filters.Where(x => x.Selected).ToList(), _columnFilterType, _fieldFilterType)
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: null;
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Table?.ColumnFilterChange();
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}
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private void ResetFilters()
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{
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if (_columnFilterType == TableFilterType.List)
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{
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_filters.ForEach(x => x.Selected = false);
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}
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else
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{
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ResetFieldFilters();
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}
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FilterConfirm(true);
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}
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private void AddFilter()
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{
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((List<TableFilter>)_filters).Add(GetNewFilter());
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}
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private void RemoveFilter(TableFilter filter)
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{
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((List<TableFilter>)_filters).Remove(filter);
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}
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private TableFilter GetNewFilter()
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{
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if (_columnFilterType == TableFilterType.FieldType)
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{
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return new TableFilter()
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{
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FilterCondition = TableFilterCondition.And,
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FilterCompareOperator = _fieldFilterType.DefaultCompareOperator
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};
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}
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else
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{
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return new TableFilter()
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{
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FilterCondition = TableFilterCondition.Or,
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FilterCompareOperator = TableFilterCompareOperator.Equals
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};
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}
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}
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private void ResetFieldFilters()
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{
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_filters = new List<TableFilter>() { GetNewFilter() };
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}
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void IFieldColumn.ClearFilters() => ResetFilters();
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void IFieldColumn.SetFilterModel(ITableFilterModel filterModel)
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{
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foreach (var filter in filterModel.Filters)
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{
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if (filter.Value is JsonElement jsonElement)
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{
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filter.Value = JsonElementHelper<TData>.GetValue(jsonElement);
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}
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}
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if (_columnFilterType == TableFilterType.List)
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{
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foreach (var filter in _filters.Where(f => filterModel.Filters.Any(x => x.Value.Equals(f.Value))))
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{
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filter.Selected = true;
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}
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}
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else
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{
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_filters = filterModel.Filters;
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}
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FilterModel = new FilterModel<TData>(this, GetFieldExpression, FieldName, OnFilter,
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_filters.Where(x => x.Selected).ToList(), _columnFilterType, _fieldFilterType);
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_hasFilterSelected = true;
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}
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void IFieldColumn.SetSortModel(ITableSortModel sortModel)
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{
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SortModel = new SortModel<TData>(this, GetFieldExpression, FieldName, SorterMultiple, SortDirection.Parse(sortModel.Sort), SorterCompare);
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this.SetSorter(SortDirection.Parse(sortModel.Sort));
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}
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protected object _filterInputRef;
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private void FilterDropdownOnVisibleChange(bool visible)
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{
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#if NET5_0_OR_GREATER
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if (!visible ||
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_filterInputRef is not AntDomComponentBase baseDomComponent ||
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baseDomComponent.GetType().GetGenericTypeDefinition() != typeof(Input<>) ||
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baseDomComponent.Ref.Context == null) return;
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_ = Task.Run(async () =>
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{
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var filterInputFocused = false;
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var attemptCount = 0;
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do
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{
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await Task.Delay(50);
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try
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{
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await Js.FocusAsync(baseDomComponent.Ref, FocusBehavior.FocusAtLast);
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await Task.Delay(50);
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filterInputFocused = await JsInvokeAsync<string>(JSInteropConstants.GetActiveElement) == baseDomComponent.Id;
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}
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catch (JSException jsex)
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{
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Console.WriteLine(jsex.ToString());
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break;
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}
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catch
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{
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throw;
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}
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finally
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{
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attemptCount++;
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}
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if (attemptCount > 2) break;
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} while (!filterInputFocused);
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});
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|
#endif
|
|
}
|
|
}
|
|
}
|