!2738 fix(#I55J40): datatime view mode incorrect when click datetime cell to switch the view mode

* chore: bump version 6.5.18
* test: 增加代码覆盖率
* test: 增加天溢出单元测试
* test: 增加年溢出单元测试
* refactor: 更新 IsDayOverflow 逻辑
* refactor: 更改为属性
* doc: 格式化文档
* refactor: 重新排序枚举类型增加组件视图默认值
* fix: 修复 Month 视图时点击后进入 DateTime 视图
* doc: 更改文件名与枚举类型一致
* refactor: 排序 DatePickerViewMode 枚举类型

src/BootstrapBlazor.Shared/Samples/DateTimePickers.razor

@@ -101,7 +101,7 @@
             <DateTimePicker TValue="DateTime" IsDisabled="IsDisabled" />
         </div>
         <div class="col-12 col-sm-6">
-			<Switch @bind-Value="@IsDisabled" />
+            <Switch @bind-Value="@IsDisabled" />
         </div>
     </div>
 </DemoBlock>

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>6.5.17</Version>
+    <Version>6.5.18</Version>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net5.0'">

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

@@ -69,7 +69,7 @@ public sealed partial class DatePickerBody
         .AddClass("disabled", IsDisabled(day) || overflow)
         .Build();
 
-    private bool IsDisabled(DateTime day) => (MinValue != null && day < MinValue) || (MaxValue != null && day > MaxValue);
+    private bool IsDisabled(DateTime day) => (MinValue.HasValue && day < MinValue.Value) || (MaxValue.HasValue && day > MaxValue.Value);
 
     /// <summary>
     /// 获得 年月日时分秒视图样式
@@ -333,6 +333,31 @@ public sealed partial class DatePickerBody
     [NotNull]
     private string? Weekago { get; set; }
 
+    private Dictionary<DatePickerViewMode, List<DatePickerViewMode>> AllowSwitchModes { get; } = new Dictionary<DatePickerViewMode, List<DatePickerViewMode>>
+    {
+        [DatePickerViewMode.DateTime] = new List<DatePickerViewMode>()
+        {
+            DatePickerViewMode.DateTime,
+            DatePickerViewMode.Month,
+            DatePickerViewMode.Year
+        },
+        [DatePickerViewMode.Date] = new List<DatePickerViewMode>()
+        {
+            DatePickerViewMode.Date,
+            DatePickerViewMode.Month,
+            DatePickerViewMode.Year
+        },
+        [DatePickerViewMode.Month] = new List<DatePickerViewMode>()
+        {
+            DatePickerViewMode.Month,
+            DatePickerViewMode.Year
+        },
+        [DatePickerViewMode.Year] = new List<DatePickerViewMode>()
+        {
+            DatePickerViewMode.Year
+        }
+    };
+
     /// <summary>
     /// OnInitialized 方法
     /// </summary>
@@ -452,7 +477,10 @@ public sealed partial class DatePickerBody
     private Task SwitchView(DatePickerViewMode view)
     {
         ShowTimePicker = false;
-        CurrentViewMode = view;
+        if (AllowSwitchModes[ViewMode].Contains(view))
+        {
+            CurrentViewMode = view;
+        }
         StateHasChanged();
         return Task.CompletedTask;
     }

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

@@ -105,7 +105,7 @@ public sealed partial class DateTimePicker<TValue>
     /// 获得/设置 组件显示模式 默认为显示年月日模式
     /// </summary>
     [Parameter]
-    public DatePickerViewMode ViewMode { get; set; }
+    public DatePickerViewMode ViewMode { get; set; } = DatePickerViewMode.Date;
 
     /// <summary>
     /// 获得/设置 是否显示快捷侧边栏 默认不显示

src/BootstrapBlazor/Enums/DatePickerViewMode.cs

@@ -9,23 +9,23 @@ namespace BootstrapBlazor.Components;
 /// </summary>
 public enum DatePickerViewMode
 {
-    /// <summary>
-    /// 年月日模式
-    /// </summary>
-    Date,
-
     /// <summary>
     /// 年月日时分秒模式
     /// </summary>
     DateTime,
 
     /// <summary>
-    /// 年视图
+    /// 年月日模式
     /// </summary>
-    Year,
+    Date,
 
     /// <summary>
     /// 月视图
     /// </summary>
-    Month
+    Month,
+
+    /// <summary>
+    /// 年视图
+    /// </summary>
+    Year
 }

src/BootstrapBlazor/Extensions/DateTimeExtensions.cs

@@ -96,19 +96,7 @@ internal static class DateTimeExtensions
     /// <param name="dt"></param>
     /// <param name="day"></param>
     /// <returns></returns>
-    public static bool IsDayOverflow(this DateTime dt, int day)
+    public static bool IsDayOverflow(this DateTime dt, int day) => DateTime.MaxValue.AddDays(0 - day) < dt;
-    {
-        var ret = false;
-        if (day < 0)
-        {
-            ret = DateTime.MinValue.AddDays(0 - day) > dt;
-        }
-        else if (day > 0)
-        {
-            ret = DateTime.MaxValue.AddDays(0 - day) < dt;
-        }
-        return ret;
-    }
 
     /// <summary>
     /// 

test/UnitTest/Components/DateTimePickerTest.cs

@@ -191,6 +191,26 @@ public class DateTimePickerTest : BootstrapBlazorTestBase
         }
     }
 
+    [Fact]
+    public void IsYearOverflow_Ok()
+    {
+        var cut = Context.RenderComponent<DatePickerBody>(builder =>
+        {
+            builder.Add(a => a.Value, DateTime.MinValue.AddDays(1));
+            builder.Add(a => a.ViewMode, DatePickerViewMode.Year);
+        });
+    }
+
+    [Fact]
+    public void IsDayOverflow()
+    {
+        var cut = Context.RenderComponent<DatePickerBody>(builder =>
+        {
+            builder.Add(a => a.Value, DateTime.MaxValue.AddDays(-1));
+            builder.Add(a => a.ViewMode, DatePickerViewMode.Date);
+        });
+    }
+
     [Fact]
     public void ShowSidebar_Ok()
     {
@@ -282,7 +302,12 @@ public class DateTimePickerTest : BootstrapBlazorTestBase
         {
             builder.Add(a => a.Value, DateTime.Now);
             builder.Add(a => a.MinValue, DateTime.Today.AddDays(-1));
-            builder.Add(a => a.MaxValue, DateTime.Today.AddDays(7));
+        });
+
+        cut.SetParametersAndRender(pb =>
+        {
+            pb.Add(a => a.MinValue, null);
+            pb.Add(a => a.MaxValue, DateTime.Today.AddDays(7));
         });
     }