private static Func <T, T, T> BuildAggregateFunction()
{
var type = typeof(T);
var enumType = THelper.GetUnderlyingType <T>();
var underlyingType = Enum.GetUnderlyingType(enumType);
var param1 = Expression.Parameter(type);
var param2 = Expression.Parameter(type);
var body = Expression.Convert(
Expression.Or(
Expression.Convert(param1, underlyingType),
Expression.Convert(param2, underlyingType)),
type);
return(Expression.Lambda <Func <T, T, T> >(body, param1, param2).Compile());
}
protected override void OnInitialized()
{
base.OnInitialized();
Sortable = Sortable || SorterMultiple != default || SorterCompare != default || DefaultSortOrder != default || SortDirections?.Any() == true;
if (IsHeader)
{
if (FieldExpression != null)
{
var paramExp = Expression.Parameter(ItemType);
var member = ColumnExpressionHelper.GetReturnMemberInfo(FieldExpression);
var bodyExp = Expression.MakeMemberAccess(paramExp, member);
GetFieldExpression = Expression.Lambda(bodyExp, paramExp);
}
else if (DataIndex != null)
{
(_, GetFieldExpression) = ColumnDataIndexHelper <TData> .GetDataIndexConfig(this);
}
if (GetFieldExpression != null)
{
var member = ColumnExpressionHelper.GetReturnMemberInfo(GetFieldExpression);
DisplayName = member.GetCustomAttribute <DisplayNameAttribute>(true)?.DisplayName ?? member.GetCustomAttribute <DisplayAttribute>(true)?.GetName() ?? member.Name;
FieldName = DataIndex ?? member.Name;
}
if (Sortable && GetFieldExpression != null)
{
SortModel = new SortModel <TData>(GetFieldExpression, FieldName, SorterMultiple, DefaultSortOrder, SorterCompare);
}
}
else if (IsBody)
{
SortModel = Context.HeaderColumns[ColIndex] is IFieldColumn fieldColumn ? fieldColumn.SortModel : null;
(GetValue, _) = ColumnDataIndexHelper <TData> .GetDataIndexConfig(this);
}
SortDirections ??= Table.SortDirections;
Sortable = Sortable || SortModel != null;
_sortDirection = SortModel?.SortDirection ?? DefaultSortOrder ?? SortDirection.None;
if (Filters?.Any() == true)
{
Filterable = true;
_columnFilterType = TableFilterType.List;
}
else if (Filterable)
{
_columnDataType = THelper.GetUnderlyingType <TData>();
if (_columnDataType == typeof(bool))
{
_columnFilterType = TableFilterType.List;
Filters = new List <TableFilter <TData> >();
var trueFilterOption = GetNewFilter();
trueFilterOption.Text = Table.Locale.FilterOptions.True;
trueFilterOption.Value = THelper.ChangeType <TData>(true);
((List <TableFilter <TData> >)Filters).Add(trueFilterOption);
var falseFilterOption = GetNewFilter();
falseFilterOption.Text = Table.Locale.FilterOptions.False;
falseFilterOption.Value = THelper.ChangeType <TData>(false);
((List <TableFilter <TData> >)Filters).Add(falseFilterOption);
}
else
{
_columnFilterType = TableFilterType.FeildType;
InitFilters();
}
}
ClassMapper
.If("ant-table-column-has-sorters", () => Sortable)
.If($"ant-table-column-sort", () => Sortable && SortModel != null && SortModel.SortDirection.IsIn(SortDirection.Ascending, SortDirection.Descending));
}
static EnumHelper()
{
_enumType = THelper.GetUnderlyingType <T>();
_aggregateFunction = BuildAggregateFunction();
_valueList = Enum.GetValues(_enumType).Cast <T>();
}