/// <summary>
/// 调用 OnQuery 回调方法获得数据源
/// </summary>
protected async Task QueryData()
{
// 目前设计使用 Items 参数后不回调 OnQueryAsync 方法
if (Items == null)
{
if (OnQueryAsync == null && DynamicContext != null && typeof(TItem).IsAssignableTo(typeof(IDynamicObject)))
{
// 动态数据
SelectedRows.Clear();
QueryItems = DynamicContext.GetItems().Cast <TItem>();
if (DynamicContext.OnGetSelectedRows != null)
{
SelectedRows.AddRange(DynamicContext.OnGetSelectedRows().Cast <TItem>());
}
TotalCount = QueryItems.Count();
}
else
{
// 数据集合
await OnQuery();
}
}
else
{
RowsCache = null;
}
async Task OnQuery()
{
QueryData <TItem>?queryData = null;
var queryOption = new QueryPageOptions()
{
IsPage = IsPagination,
PageIndex = PageIndex,
PageItems = PageItems,
SearchText = SearchText,
SortOrder = SortOrder,
SortName = SortName,
SortList = string.IsNullOrEmpty(SortString) ? null : new List <string>(SortString.Split(",", StringSplitOptions.RemoveEmptyEntries)),
Filters = Filters.Values,
Searchs = GetSearchs(),
AdvanceSearchs = GetAdvanceSearchs(),
CustomerSearchs = GetCustomerSearchs(),
SearchModel = SearchModel,
StartIndex = StartIndex
};
if (CustomerSearchModel != null)
{
queryOption.SearchModel = CustomerSearchModel;
}
queryData = await InternalOnQueryAsync(queryOption);
RowsCache = null;
Items = null;
QueryItems = queryData.Items;
TotalCount = queryData.TotalCount;
IsAdvanceSearch = queryData.IsAdvanceSearch;
// 处理选中行逻辑
ProcessSelectedRows();
// 分页情况下内部不做处理防止页码错乱
if (!queryOption.IsPage)
{
ProcessPageData(queryData, queryOption);
}
if (IsTree)
{
await ProcessTreeData();
}
void ProcessSelectedRows()
{
// 判断模型是否有 [Key] Id 等可识别字段尝试重构
var rows = new List <TItem>();
if (HasKeyAttribute)
{
// 更新选中行逻辑
foreach (var item in SelectedRows)
{
var key = Utility.GetKeyValue <TItem, object>(item);
if (key != null)
{
var row = QueryItems.FirstOrDefault(i => Utility.GetKeyValue <TItem, object>(i).ToString() == key.ToString());
if (row != null)
{
rows.Add(row);
}
}
}
}
else
{
foreach (var row in SelectedRows)
{
if (QueryItems.Any(i => i == row))
{
rows.Add(row);
}
}
}
SelectedRows = rows;
}
void ProcessPageData(QueryData <TItem> queryData, QueryPageOptions queryOption)
{
var filtered = queryData.IsFiltered;
var sorted = queryData.IsSorted;
var searched = queryData.IsSearch;
// 外部未处理 SearchText 模糊查询
if (!searched && queryOption.Searchs.Any())
{
QueryItems = QueryItems.Where(queryOption.Searchs.GetFilterFunc <TItem>(FilterLogic.Or));
TotalCount = QueryItems.Count();
}
// 外部未处理自定义高级搜索 内部进行高级自定义搜索过滤
if (!IsAdvanceSearch && queryOption.CustomerSearchs.Any())
{
QueryItems = QueryItems.Where(queryOption.CustomerSearchs.GetFilterFunc <TItem>());
TotalCount = QueryItems.Count();
IsAdvanceSearch = true;
}
// 外部未过滤，内部自行过滤
if (!filtered && queryOption.Filters.Any())
{
QueryItems = QueryItems.Where(queryOption.Filters.GetFilterFunc <TItem>());
TotalCount = QueryItems.Count();
}
// 外部未处理排序，内部自行排序
// 先处理列头排序 再处理默认多列排序
if (!sorted)
{
if (queryOption.SortOrder != SortOrder.Unset && !string.IsNullOrEmpty(queryOption.SortName))
{
var invoker = Utility.GetSortFunc <TItem>();
QueryItems = invoker(QueryItems, queryOption.SortName, queryOption.SortOrder);
}
else if (queryOption.SortList != null && queryOption.SortList.Any())
{
var invoker = Utility.GetSortListFunc <TItem>();
QueryItems = invoker(QueryItems, queryOption.SortList);
}
}
}
async Task ProcessTreeData()
{
KeySet.Clear();
if (HasKeyAttribute)
{
CheckExpandKeys(TreeRows);
}
if (KeySet.Count > 0)
{
TreeRows = new List <TableTreeNode <TItem> >();
foreach (var item in QueryItems)
{
var node = new TableTreeNode <TItem>(item)
{
HasChildren = CheckTreeChildren(item),
};
node.IsExpand = IsExpandRow(node);
if (node.IsExpand)
{
await RestoreIsExpand(node);
}
TreeRows.Add(node);
}
}
else
{
TreeRows = QueryItems.Select(item => new TableTreeNode <TItem>(item)
{
HasChildren = CheckTreeChildren(item)
}).ToList();
}
}
}
}