feat(BootstrapInputNumber): add OnBlurAsync parameter (#4519)

* feat(InputNumber): add OnBlurAsync parameter

* test: 更新单元测试

Author: ArgoZhang

src/BootstrapBlazor/Components/InputNumber/BootstrapInputNumber.razor.cs

@@ -83,6 +83,12 @@ public partial class BootstrapInputNumber<TValue>
     [Parameter]
     public string? PlusIcon { get; set; }
 
+    /// <summary>
+    /// 获得/设置 失去焦点回调方法 默认 null
+    /// </summary>
+    [Parameter]
+    public Func<TValue, Task>? OnBlurAsync { get; set; }
+
     [Inject]
     [NotNull]
     private IStringLocalizer<BootstrapInputNumber<TValue>>? Localizer { get; set; }
@@ -281,6 +287,11 @@ private async Task OnBlur()
             // set component value empty
             await InvokeVoidAsync("clear", Id);
         }
+
+        if (OnBlurAsync != null)
+        {
+            await OnBlurAsync(Value);
+        }
     }
 
     private TValue SetMin(TValue val)

test/UnitTest/Components/InputNumberTest.cs

@@ -138,6 +138,23 @@ await cut.InvokeAsync(() =>
         Assert.Null(cut.Instance.Value);
     }
 
+    [Fact]
+    public async Task OnBlurAsync_Ok()
+    {
+        var blur = false;
+        var cut = Context.RenderComponent<BootstrapInputNumber<int>>(builder =>
+        {
+            builder.Add(a => a.OnBlurAsync, v =>
+            {
+                blur = true;
+                return Task.CompletedTask;
+            });
+        });
+        var input = cut.Find("input");
+        await cut.InvokeAsync(() => { input.Blur(); });
+        Assert.True(blur);
+    }
+
     [Fact]
     public async Task ShowButton_Ok()
     {