!3747 fix(#I69VFA): update RibbonTab make sure have IsActive item

* chore: bump version 7.2.3-beta02
* fix: 修复 RibbonTab 可能导致二级菜单不显示问题

Author: ArgoZhang

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>7.2.3-beta01</Version>
+    <Version>7.2.3-beta02</Version>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net5.0'">

src/BootstrapBlazor/Components/RibbonTab/RibbonTab.razor

@@ -4,7 +4,7 @@
 <div @attributes="@AdditionalAttributes" id="@Id" class="@HeaderClassString">
     <div class="ribbon-header">
         <Tab IsBorderCard="true" OnClickTab="OnClickTab">
-            @foreach (var item in GetItems())
+            @foreach (var item in Items)
             {
                 <TabItem @key="item" Text="@item.Text" IsActive="item.IsActive">
                     <div class="tab-commands">

src/BootstrapBlazor/Components/RibbonTab/RibbonTab.razor.cs

@@ -52,6 +52,7 @@ public partial class RibbonTab
     /// 获得/设置 数据源
     /// </summary>
     [Parameter]
+    [NotNull]
 #if NET6_0_OR_GREATER
     [EditorRequired]
 #endif
@@ -106,6 +107,24 @@ public partial class RibbonTab
     /// <returns></returns>
     protected override Task ModuleInitAsync() => InvokeInitAsync(Id, nameof(SetExpand));
 
+    /// <summary>
+    /// <inheritdoc/>
+    /// </summary>
+    protected override void OnParametersSet()
+    {
+        base.OnParametersSet();
+
+        Items ??= Enumerable.Empty<RibbonTabItem>();
+        if (!Items.Any(i => i.IsActive))
+        {
+            var item = Items.FirstOrDefault();
+            if (item != null)
+            {
+                item.IsActive = true;
+            }
+        }
+    }
+
     /// <summary>
     /// SetExpand 方法
     /// </summary>
@@ -126,12 +145,12 @@ private async Task OnClick(RibbonTabItem item)
 
     private async Task OnClickTab(TabItem item)
     {
-        var tab = GetItems().FirstOrDefault(i => i.IsActive);
+        var tab = Items.FirstOrDefault(i => i.IsActive);
         if (tab != null)
         {
             tab.IsActive = false;
         }
-        tab = GetItems().First(i => i.Text == item.Text);
+        tab = Items.First(i => i.Text == item.Text);
         tab.IsActive = true;
         if (OnMenuClickAsync != null)
         {
@@ -144,8 +163,6 @@ private async Task OnClickTab(TabItem item)
         }
     }
 
-    private IEnumerable<RibbonTabItem> GetItems() => Items ?? Enumerable.Empty<RibbonTabItem>();
-
     private async Task OnToggleFloat()
     {
         IsFloat = !IsFloat;