73 lines
2.1 KiB
C#
73 lines
2.1 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Threading.Tasks;
|
|
|
|
namespace LibationWinForms
|
|
{
|
|
class SortableBindingList2<T> : BindingList<T> where T : IObjectMemberComparable
|
|
{
|
|
private ObjectMemberComparer<T> Comparer = new();
|
|
|
|
private bool isSorted;
|
|
private ListSortDirection listSortDirection;
|
|
private PropertyDescriptor propertyDescriptor;
|
|
|
|
public SortableBindingList2() : base(new List<T>()) { }
|
|
|
|
public SortableBindingList2(IEnumerable<T> enumeration) : base(new List<T>(enumeration)) { }
|
|
|
|
protected override bool SupportsSortingCore => true;
|
|
|
|
protected override bool IsSortedCore => isSorted;
|
|
|
|
protected override PropertyDescriptor SortPropertyCore => propertyDescriptor;
|
|
|
|
protected override ListSortDirection SortDirectionCore => listSortDirection;
|
|
|
|
protected override bool SupportsSearchingCore => true;
|
|
|
|
protected override void ApplySortCore(PropertyDescriptor property, ListSortDirection direction)
|
|
{
|
|
List<T> itemsList = (List<T>)Items;
|
|
|
|
Comparer.PropertyName = property.Name;
|
|
Comparer.Direction = direction;
|
|
|
|
itemsList.Sort(Comparer);
|
|
|
|
propertyDescriptor = property;
|
|
listSortDirection = direction;
|
|
isSorted = true;
|
|
|
|
OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1));
|
|
}
|
|
|
|
protected override void RemoveSortCore()
|
|
{
|
|
isSorted = false;
|
|
propertyDescriptor = base.SortPropertyCore;
|
|
listSortDirection = base.SortDirectionCore;
|
|
|
|
OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1));
|
|
}
|
|
|
|
protected override int FindCore(PropertyDescriptor property, object key)
|
|
{
|
|
int count = Count;
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
T element = this[i];
|
|
if (property.GetValue(element).Equals(key))
|
|
{
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
}
|
|
}
|