feat(DateTimePicker): support customize disabled date

src/BootstrapBlazor.Server/Components/Samples/DateTimePickers.razor

@@ -39,6 +39,12 @@
     <section ignore>
         <Tips class="mt-3">
             <p>@((MarkupString)Localizer["FeatureIntro"].Value)</p>
+            <ul class="ul-demo mt-3">
+                <li>@((MarkupString)Localizer["FeatureShowLunarIntro"].Value)</li>
+                <li>@((MarkupString)Localizer["FeatureShowSolarTermIntro"].Value)</li>
+                <li>@((MarkupString)Localizer["FeatureShowFestivalsIntro"].Value)</li>
+                <li>@((MarkupString)Localizer["FeatureShowHolidaysIntro"].Value)</li>
+            </ul>
             <div>@((MarkupString)Localizer["FeatureFestivalIntro"].Value)</div>
         </Tips>
     </section>
@@ -51,7 +57,7 @@
                 <DateTimePicker @bind-Value="@ValidateFormValue" />
             </div>
             <div class="col-12 col-sm-auto align-self-end">
-                <Button ButtonType="ButtonType.Submit" Text="@Localizer["SubmitText"]" Icon="fa-solid fa-floppy-disk" />
+                <Button ButtonType="ButtonType.Submit" Text="@Localizer["SubmitText"]" Icon="fa-solid fa-floppy-disk"></Button>
             </div>
         </div>
     </ValidateForm>
@@ -173,10 +179,6 @@
     </div>
 </DemoBlock>
 
-<DemoBlock Title="@Localizer["ShowLunarTitle"]" Introduction="@Localizer["ShowLunarIntro"]" Name="ShowLunar">
-    <DateTimePicker TValue="DateTimeOffset" ShowLunar="true" ShowSolarTerm="true" ShowFestivals="true" ShowHolidays="true"></DateTimePicker>
-</DemoBlock>
-
 <DemoBlock Title="@Localizer["DayTemplateTitle"]" Introduction="@Localizer["DayTemplateIntro"]" Name="DayTemplate">
     <DateTimePicker TValue="DateTimeOffset?" CustomClass="custom-picker">
         <DayTemplate>
@@ -188,6 +190,38 @@
     </DateTimePicker>
 </DemoBlock>
 
+<DemoBlock Title="@Localizer["DisableDayCallbackTitle"]" Introduction="@Localizer["DisableDayCallbackIntro"]" Name="OnDisabledDayCallback">
+    <section ignore>
+        <Tips>
+            @((MarkupString)Localizer["DisableDayCallbackTip"].Value)
+        </Tips>
+        <GroupBox Title="@Localizer["DisableOptions"]">
+            <div class="row g-3 form-inline text-end">
+                <div class="col-12 col-sm-6 col-md-auto">
+                    <Switch DisplayText="@Localizer["DisableWeekend"]" ShowLabel="true" @bind-Value="_disableWeekend" OnValueChanged="OnDisabledDaysChanged" />
+                </div>
+                <div class="col-12 col-sm-6 col-md-auto">
+                    <Switch DisplayText="@Localizer["DisableToday"]" ShowLabel="true" @bind-Value="_disableToday" OnValueChanged="OnDisabledDaysChanged" />
+                </div>
+            </div>
+        </GroupBox>
+    </section>
+    <div class="row form-inline g-3">
+        <div class="col-12 col-sm-6">
+            <DateTimePicker ViewMode="DatePickerViewMode.DateTime" DisplayText="@Localizer["DisableDayCallbackAllowNullDisplayText"]"
+                            ShowLabel="true" @bind-Value="@_disabledNullValue" @ref="_picker1"
+                            OnGetDisabledDaysCallback="OnGetDisabledDaysCallback" DisplayDisabledDayAsEmpty="true">
+            </DateTimePicker>
+        </div>
+        <div class="col-12 col-sm-6">
+            <DateTimePicker ViewMode="DatePickerViewMode.DateTime" DisplayText="@Localizer["DisableDayCallbackNotAllowNullDisplayText"]"
+                            ShowLabel="true" @bind-Value="@_disabledValue" @ref="_picker2"
+                            OnGetDisabledDaysCallback="OnGetDisabledDaysCallback">
+            </DateTimePicker>
+        </div>
+    </div>
+</DemoBlock>
+
 <AttributeTable Items="@GetAttributes()" />
 
 <EventTable Items="@GetEvents()" />

src/BootstrapBlazor.Server/Components/Samples/DateTimePickers.razor.cs

@@ -90,6 +90,54 @@ private string BindValueString
     private bool _showSolarTerm = true;
     private bool _showFestivals = true;
     private bool _showHolidays = true;
+    private bool _disableWeekend = true;
+    private bool _disableToday = true;
+    private DateTime? _disabledNullValue = DateTime.Today;
+    private DateTime _disabledValue = DateTime.Today;
+
+    private async Task<List<DateTime>> OnGetDisabledDaysCallback(DateTime start, DateTime end)
+    {
+        var ret = new List<DateTime>();
+        if (_disableWeekend)
+        {
+            var day = start;
+            while (day <= end)
+            {
+                if (day.DayOfWeek is DayOfWeek.Sunday or DayOfWeek.Saturday)
+                {
+                    ret.Add(day);
+                }
+                day = day.AddDays(1);
+            }
+
+            if (DateTime.Today.DayOfWeek is DayOfWeek.Sunday or DayOfWeek.Saturday)
+            {
+                // 处理今天是否禁用
+                ret.Add(DateTime.Today);
+            }
+        }
+
+        if (_disableToday)
+        {
+            // 处理今天是否禁用
+            ret.Add(DateTime.Today);
+        }
+
+        // 模拟异步延迟
+        await Task.Delay(100);
+        return ret;
+    }
+
+    private DateTimePicker<DateTime?> _picker1 = default!;
+
+    private DateTimePicker<DateTime> _picker2 = default!;
+
+    private Task OnDisabledDaysChanged(bool v)
+    {
+        _picker1.ClearDisabledDays();
+        _picker2.ClearDisabledDays();
+        return Task.CompletedTask;
+    }
 
     /// <summary>
     /// 获得事件方法
@@ -108,6 +156,12 @@ private EventItem[] GetEvents() =>
             Name = "ValueChanged",
             Description = Localizer["Event2"],
             Type ="EventCallback<DateTime?>"
+        },
+        new()
+        {
+            Name = "OnGetDisabledDaysCallback",
+            Description = Localizer["OnGetDisabledDaysCallbackEvent"],
+            Type ="Func<DateTime, DateTime, Task<List<DateTime>>>"
         }
     ];
 
@@ -214,6 +268,13 @@ private AttributeItem[] GetAttributes() =>
             Type = "bool",
             ValueList = "true/false",
             DefaultValue = "false"
+        },
+        new() {
+            Name = "EnableDisabledDaysCache",
+            Description = Localizer["AttrEnableDisabledDaysCache"],
+            Type = "bool",
+            ValueList = "true/false",
+            DefaultValue = "true"
         }
     ];
 }

src/BootstrapBlazor.Server/Components/Samples/Toggles.razor.cs

@@ -71,15 +71,15 @@ private AttributeItem[] GetAttributes() =>
             Description = Localizer["OffTextAttr"],
             Type = "string",
             ValueList = "—",
-            DefaultValue = Localizer["OffTextDefautValue"]!
+            DefaultValue = Localizer["OffTextDefaultValue"]!
         },
         new()
         {
             Name = "OnText",
             Description = Localizer["OnTextAttr"],
             Type = "string",
             ValueList = "—",
-            DefaultValue = Localizer["OnTextDefautValue"]!
+            DefaultValue = Localizer["OnTextDefaultValue"]!
         },
         new()
         {