/// <summary>
/// 通过指定 Model 获得 IEditorItem 集合方法
/// </summary>
/// <param name="source"></param>
/// <param name="predicate"></param>
/// <returns></returns>
public static IEnumerable <IEditorItem> GenerateColumns <TModel>(this TModel source, Func <IEditorItem, bool>?predicate = null)
where TModel : class
{
if (predicate == null)
{
predicate = p => true;
}
return(InternalTableColumn.GetProperties <TModel>().Where(predicate));
}
public static IEnumerable <ITableColumn> GetProperties <TModel>(IEnumerable <ITableColumn>?source = null)
{
var cols = new List <ITableColumn>(50);
var type = typeof(TModel);
var attrModel = type.GetCustomAttribute <AutoGenerateClassAttribute>();
var props = type.GetProperties();
foreach (var prop in props)
{
ITableColumn?tc;
var attr = prop.GetCustomAttribute <AutoGenerateColumnAttribute>();
// Issue: 增加定义设置标签 AutoGenerateClassAttribute
// https://gitee.com/LongbowEnterprise/BootstrapBlazor/issues/I381ED
var displayName = attr?.Text ?? Utility.GetDisplayName(type, prop.Name);
if (attr == null)
{
tc = new InternalTableColumn(prop.Name, prop.PropertyType, displayName);
if (attrModel != null)
{
InheritValue(attrModel, tc);
}
}
else
{
if (attr.Ignore)
{
continue;
}
attr.Text = displayName;
attr.FieldName = prop.Name;
attr.PropertyType = prop.PropertyType;
if (attrModel != null)
{
InheritValue(attrModel, attr);
}
tc = attr;
}
// 替换属性 手写优先
var col = source?.FirstOrDefault(c => c.GetFieldName() == tc.GetFieldName());
if (col != null)
{
CopyValue(col, tc);
}
cols.Add(tc);
}
return(cols.Where(a => a.Order > 0).OrderBy(a => a.Order)
.Concat(cols.Where(a => a.Order == 0))
.Concat(cols.Where(a => a.Order < 0).OrderBy(a => a.Order)));
}
/// <summary>
/// OnAfterRenderAsync 方法
/// </summary>
/// <param name="firstRender"></param>
/// <returns></returns>
protected override async Task OnAfterRenderAsync(bool firstRender)
{
await base.OnAfterRenderAsync(firstRender);
if (firstRender)
{
FirstRender = false;
if (CascadeEditorItems != null)
{
// 通过级联参数渲染组件
FormItems.AddRange(CascadeEditorItems);
}
else
{
// 如果 EditorItems 有值表示 用户自定义列
if (AutoGenerateAllItem)
{
// 获取绑定模型所有属性
var items = InternalTableColumn.GetProperties <TModel>().ToList();
// 通过设定的 FieldItems 模板获取项进行渲染
foreach (var el in EditorItems)
{
var item = items.FirstOrDefault(i => i.GetFieldName() == el.GetFieldName());
if (item != null)
{
// 过滤掉不编辑的列
if (!el.Editable)
{
items.Remove(item);
}
else
{
// 设置只读属性与列模板
item.Readonly = el.Readonly;
item.EditTemplate = el.EditTemplate;
item.Text = el.Text;
item.Data = el.Data;
}
}
}
FormItems.AddRange(items);
}
else
{
FormItems.AddRange(EditorItems);
}
}
StateHasChanged();
}
}
public static IEnumerable <ITableColumn> GetProperties <TModel>(IEnumerable <ITableColumn>?source = null)
{
var cols = new List <ITableColumn>(50);
var type = typeof(TModel);
var props = type.GetProperties();
foreach (var prop in props)
{
ITableColumn?tc;
var attr = prop.GetCustomAttribute <AutoGenerateColumnAttribute>();
if (attr == null)
{
tc = new InternalTableColumn(prop.Name, prop.PropertyType, type.GetDisplayName(prop.Name));
}
else
{
if (attr.Ignore)
{
continue;
}
attr.Text = type.GetDisplayName(prop.Name);
attr.FieldName = prop.Name;
attr.PropertyType = prop.PropertyType;
tc = attr;
}
// 替换属性 手写优先
var col = source?.FirstOrDefault(c => c.GetFieldName() == tc.GetFieldName());
if (col != null)
{
CopyValue(col, tc);
}
cols.Add(tc);
}
return(cols.Where(a => a.Order > 0).OrderBy(a => a.Order)
.Concat(cols.Where(a => a.Order == 0))
.Concat(cols.Where(a => a.Order < 0).OrderBy(a => a.Order)));
}
public static void GetProperties <TModel>(List <ITableColumn> columns)
{
var cols = new List <ITableColumn>(50);
var type = typeof(TModel);
var props = type.GetProperties();
foreach (var prop in props)
{
ITableColumn?tc;
var attr = prop.GetCustomAttribute <AutoGenerateColumnAttribute>();
if (attr == null)
{
tc = new InternalTableColumn(prop.Name, prop.PropertyType, type.GetDisplayName(prop.Name));
}
else
{
if (attr.Ignore)
{
continue;
}
attr.Text = type.GetDisplayName(prop.Name);
attr.FieldName = prop.Name;
attr.PropertyType = prop.PropertyType;
tc = attr;
}
// 替换属性 手写优先
var col = columns.FirstOrDefault(c => c.GetFieldName() == tc.GetFieldName());
if (col != null)
{
CopyValue(col, tc);
}
cols.Add(tc);
}
columns.Clear();
columns.AddRange(cols.OrderBy(c => c.Order));
}
/// <summary>
/// OnAfterRenderAsync 方法
/// </summary>
/// <param name="firstRender"></param>
protected override async Task OnAfterRenderAsync(bool firstRender)
{
await base.OnAfterRenderAsync(firstRender);
if (firstRender)
{
FirstRender = false;
methodName = Height.HasValue ? "fixTableHeader" : "init";
ScreenSize = await RetrieveWidth();
// 初始化列
if (AutoGenerateColumns)
{
InternalTableColumn.GetProperties <TItem>(Columns);
}
ColumnVisibles = Columns.Select(i => new ColumnVisibleItem {
FieldName = i.GetFieldName(), Visible = i.Visible
}).ToList();
// set default sortName
var col = Columns.FirstOrDefault(i => i.Sortable && i.DefaultSort);
if (col != null)
{
SortName = col.GetFieldName();
SortOrder = col.DefaultSortOrder;
}
await QueryAsync();
}
if (!firstRender)
{
IsRendered = true;
}
if (IsRendered)
{
if (!string.IsNullOrEmpty(methodName))
{
// 固定表头脚本关联
await JSRuntime.InvokeVoidAsync(TableElement, "bb_table", methodName);
methodName = null;
}
if (IsAutoRefresh && AutoRefreshInterval > 500 && AutoRefreshCancelTokenSource == null)
{
AutoRefreshCancelTokenSource = new CancellationTokenSource();
// 自动刷新功能
_ = Task.Run(async() =>
{
while (!AutoRefreshCancelTokenSource.IsCancellationRequested)
{
await InvokeAsync(QueryAsync);
await Task.Delay(AutoRefreshInterval, AutoRefreshCancelTokenSource.Token);
}
});
}
}
}
/// <summary>
/// OnAfterRenderAsync 方法
/// </summary>
/// <param name="firstRender"></param>
protected override async Task OnAfterRenderAsync(bool firstRender)
{
await base.OnAfterRenderAsync(firstRender);
if (firstRender)
{
if (ShowSearch)
{
// 注册 SeachBox 回调事件
Interop = new JSInterop <Table <TItem> >(JSRuntime);
await Interop.Invoke(this, TableElement, "bb_table_search", nameof(OnSearch), nameof(OnClearSearch));
}
FirstRender = false;
methodName = Height.HasValue ? "fixTableHeader" : "init";
ScreenSize = await RetrieveWidth();
// 初始化列
if (AutoGenerateColumns)
{
var cols = InternalTableColumn.GetProperties <TItem>(Columns);
Columns.Clear();
Columns.AddRange(cols);
}
ColumnVisibles = Columns.Select(i => new ColumnVisibleItem {
FieldName = i.GetFieldName(), Visible = i.Visible
}).ToList();
// set default sortName
var col = Columns.FirstOrDefault(i => i.Sortable && i.DefaultSort);
if (col != null)
{
SortName = col.GetFieldName();
SortOrder = col.DefaultSortOrder;
}
await QueryAsync();
}
if (!firstRender)
{
IsRendered = true;
}
if (IsRendered)
{
if (IsLoading)
{
IsLoading = false;
var _ = JSRuntime.InvokeVoidAsync(TableElement, "bb_table_load", "hide");
}
// fix: https://gitee.com/LongbowEnterprise/BootstrapBlazor/issues/I2AYEH
// PR: https://gitee.com/LongbowEnterprise/BootstrapBlazor/pulls/818
if (Columns.Any(col => col.ShowTips) && string.IsNullOrEmpty(methodName))
{
methodName = "tooltip";
}
if (!string.IsNullOrEmpty(methodName))
{
await JSRuntime.InvokeVoidAsync(TableElement, "bb_table", methodName);
methodName = null;
}
if (IsAutoRefresh && AutoRefreshInterval > 500 && AutoRefreshCancelTokenSource == null)
{
AutoRefreshCancelTokenSource = new CancellationTokenSource();
// 自动刷新功能
_ = Task.Run(async() =>
{
try
{
while (!(AutoRefreshCancelTokenSource?.IsCancellationRequested ?? true))
{
await InvokeAsync(QueryAsync);
await Task.Delay(AutoRefreshInterval, AutoRefreshCancelTokenSource?.Token ?? new CancellationToken(true));
}
}
catch (TaskCanceledException) { }
});
}
}
}
/// <summary> /// 获得指定泛型的 IEditorItem 集合 /// </summary> /// <returns></returns> public static IEnumerable <IEditorItem> GenerateEditorItems() => InternalTableColumn.GetProperties <TValue>();