refactor: 支持 OnCloseAsync 回调方法

Author: ArgoZhang

src/BootstrapBlazor/Components/SweetAlert/SweetAlert.razor.cs

@@ -93,6 +93,11 @@ protected override async Task OnAfterRenderAsync(bool firstRender)
                     }
                     await Task.Delay(Delay, DelayToken.Token);
                     await ModalContainer.Close();
+
+                    if (OnCloseCallbackAsync != null)
+                    {
+                        await OnCloseCallbackAsync();
+                    }
                 }
                 catch (TaskCanceledException) { }
             }
@@ -101,6 +106,8 @@ protected override async Task OnAfterRenderAsync(bool firstRender)
 
     private bool AutoHideCheck() => IsAutoHide && Delay > 0;
 
+    private Func<Task>? OnCloseCallbackAsync = null;
+
     private async Task Show(SwalOption option)
     {
         if (!IsShowDialog)
@@ -122,6 +129,8 @@ private async Task Show(SwalOption option)
 
             DialogParameter = parameters;
 
+            OnCloseCallbackAsync = AutoHideCheck() ? option.OnCloseAsync : null;
+
             // 渲染 UI 准备弹窗 Dialog
             await InvokeAsync(StateHasChanged);
         }