perf(DateTimePicker): update cache when click year button (#4381)

* fix: 年视图切换时获得禁用日期数据

* test: 增加单元测试

* refactor: 更新单元测试

Author: ArgoZhang

src/BootstrapBlazor/Components/DateTimePicker/DatePickerBody.razor.cs

@@ -576,6 +576,10 @@ private async Task OnClickPrevYear()
             ? GetSafeYearDateTime(CurrentDate, -20)
             : GetSafeYearDateTime(CurrentDate, -1);
 
+        _render = false;
+        await UpdateDisabledDaysCache(false);
+        _render = true;
+
         if (OnDateChanged != null)
         {
             await OnDateChanged(CurrentDate);
@@ -608,6 +612,10 @@ private async Task OnClickNextYear()
             ? GetSafeYearDateTime(CurrentDate, 20)
             : GetSafeYearDateTime(CurrentDate, 1);
 
+        _render = false;
+        await UpdateDisabledDaysCache(false);
+        _render = true;
+
         if (OnDateChanged != null)
         {
             await OnDateChanged(CurrentDate);

test/UnitTest/Components/DateTimePickerTest.cs

@@ -1177,31 +1177,32 @@ public void MinValueToEmpty_Ok()
     public async Task OnGetDisabledDaysCallback_Ok()
     {
         var fetched = false;
-
+        var dtm = new DateTime(2024, 9, 25);
         // 禁用当天
         var cut = Context.RenderComponent<DateTimePicker<DateTime?>>(pb =>
         {
             pb.Add(a => a.OnGetDisabledDaysCallback, async (start, end) =>
             {
                 fetched = true;
                 await Task.Yield();
-                return [DateTime.Today];
+                return [dtm];
             });
-            pb.Add(a => a.Value, DateTime.Today);
+            pb.Add(a => a.Value, dtm);
         });
 
         // 组件值为 null
         Assert.True(fetched);
-        Assert.Equal(DateTime.Today, cut.Instance.Value);
+        Assert.Equal(dtm, cut.Instance.Value);
 
-        fetched = false;
         // 设置组件值不为当前天
+        // 相同月数据已缓存不会触发回调
+        fetched = false;
         cut.SetParametersAndRender(pb =>
         {
-            pb.Add(a => a.Value, DateTime.Today.AddDays(1));
+            pb.Add(a => a.Value, dtm.AddDays(1));
         });
         Assert.False(fetched);
-        Assert.Equal(DateTime.Today.AddDays(1), cut.Instance.Value);
+        Assert.Equal(dtm.AddDays(1), cut.Instance.Value);
 
         // 禁用缓存
         // 每次组件渲染都会触发回调
@@ -1210,11 +1211,29 @@ public async Task OnGetDisabledDaysCallback_Ok()
             pb.Add(a => a.EnableDisabledDaysCache, false);
         });
 
+        // 获得所有按钮
         var buttons = cut.FindAll(".picker-panel-header button");
+
         // 下一月
         await cut.InvokeAsync(() => buttons[2].Click());
         Assert.True(fetched);
 
+        // 上一月
+        // 数据已缓存不会触发回调
+        fetched = false;
+        await cut.InvokeAsync(() => buttons[1].Click());
+        Assert.False(fetched);
+
+        // 上一年
+        await cut.InvokeAsync(() => buttons[0].Click());
+        Assert.True(fetched);
+
+        // 下一年
+        // 数据已缓存不会触发回调
+        fetched = false;
+        await cut.InvokeAsync(() => buttons[3].Click());
+        Assert.False(fetched);
+
         // 调用清除缓存方法
         cut.Instance.ClearDisabledDays();
     }