feat(Layout): add OnCloseTabItemAsync parameter

Author: ArgoZhang

src/BootstrapBlazor/Components/Layout/Layout.razor

@@ -146,7 +146,7 @@
           ShowRefreshToolbarButton="ShowRefreshToolbarButton" ShowFullscreenToolbarButton="ShowFullscreenToolbarButton"
           RefreshToolbarButtonIcon="@RefreshToolbarButtonIcon" FullscreenToolbarButtonIcon="@FullscreenToolbarButtonIcon"
           RefreshToolbarTooltipText="@RefreshToolbarTooltipText" FullscreenToolbarTooltipText="@FullscreenToolbarTooltipText"
-          OnToolbarRefreshCallback="OnToolbarRefreshCallback" TabHeader="TabHeader"
+          OnToolbarRefreshCallback="OnToolbarRefreshCallback" TabHeader="TabHeader" OnCloseTabItemAsync="OnCloseTabItemAsync"
           Body="@Main" NotAuthorized="NotAuthorized!" NotFound="NotFound!" NotFoundTabText="@NotFoundTabText"
           EnableErrorLogger="@EnableLogger" ErrorLoggerToastTitle="@ErrorLoggerToastTitle">
     </Tab>;

src/BootstrapBlazor/Components/Layout/Layout.razor.cs

@@ -78,6 +78,13 @@ public partial class Layout : IHandlerException, ITabHeader
     [Parameter]
     public Func<Task>? OnToolbarRefreshCallback { get; set; }
 
+    /// <summary>
+    /// 获得/设置 关闭标签页前回调方法
+    /// </summary>
+    /// <remarks>返回 false 时不关 <see cref="TabItem"/> 标签页</remarks>
+    [Parameter]
+    public Func<TabItem, Task<bool>>? OnCloseTabItemAsync { get; set; }
+
     /// <summary>
     /// 获得/设置 侧边栏状态
     /// </summary>