/// <summary>
/// 以前のソート状態で再ソートする。
/// 実際にソートされるとTRUEが返る。
/// </summary>
public bool SortByMultiHeader(IList itemList0)
{
if (IsExistSortParams == false)
{
return(false);
}
List <object> srcList = itemList0.OfType <object>().ToList();
if (srcList.Count <= 1)
{
return(false);
}
//リフレクション+毎回プロパティ読み出しがかなり重いので、キャッシュを使用する
var gvCache1 = new gvCache(srcList);
//前処理(キャッシュからDictionaryを排除するため)
List <int> idxData = Enumerable.Range(0, srcList.Count).ToList();
string prevPath = "";
// Item1:first index, Item2: last index
List <Tuple <int, int> > sortGroupList1 = null;
for (int i1 = 0; i1 < this._multiHeaderSortDict.Count; i1++)
{
GridViewColumnHeader columnHeader1 = this._multiHeaderSortDict.ElementAt(i1).Key;
ListSortDirection sortDirection1 = this._multiHeaderSortDict.ElementAt(i1).Value;
string path = getHeaderString(columnHeader1);
if (string.IsNullOrEmpty(path) == true)
{
continue;
}
sortGroupList1 = CreateSortedItemGroupList(prevPath, sortGroupList1, idxData, gvCache1);
foreach (var kvp1 in sortGroupList1)
{
idxData.Sort(
kvp1.Item1,
kvp1.Item2 - kvp1.Item1 + 1,
new ItemComparer(path, sortDirection1, gvCache1));
}
prevPath = path;
}
//後処理
itemList0.Clear();
foreach (var idx in idxData)
{
itemList0.Add(srcList[idx]);
}
return(true);
}
public ItemComparer(string sortBy0, ListSortDirection direction0, gvCache cache)
{
direction = direction0 == ListSortDirection.Descending ? -1 : 1;
cache.GetCache(sortBy0, out this.values, out this.dvalues, out this.isnumeric, out this.keys);
}
private List <Tuple <int, int> > CreateSortedItemGroupList(string prevPath
, List <Tuple <int, int> > prevSortGroupList0, List <int> orderdIdxData, gvCache cache)
{
var sortGroupList1 = new List <Tuple <int, int> >();
if (prevSortGroupList0 == null)
{ // 最初
sortGroupList1.Add(new Tuple <int, int>(0, cache.ItemsCount - 1));
}
else
{
IComparable[] values = cache.GetCache(prevPath);
foreach (var kvp1 in prevSortGroupList0)
{
IComparable prevVal1 = null;
int startIndex1 = kvp1.Item1;
int i_First1 = kvp1.Item1;
int i_Last1 = kvp1.Item2;
for (int i1 = i_First1; i1 <= i_Last1; i1++)
{
IComparable val1 = values[orderdIdxData[i1]];
if (i1 != i_First1 && NullableEqualsTo(val1, prevVal1) == false)
{// 値が変化
sortGroupList1.Add(new Tuple <int, int>(startIndex1, i1 - 1));
startIndex1 = i1;
}
prevVal1 = val1;
if (i1 == i_Last1)
{// last
sortGroupList1.Add(new Tuple <int, int>(startIndex1, i1));
}
}
}
}
return(sortGroupList1);
}
