feat(SelectObject): add IsClearable parameter

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

@@ -7,7 +7,10 @@
 <h4>@Localizer["Intro"]</h4>
 
 <DemoBlock Title="@Localizer["NormalTitle"]" Introduction="@Localizer["NormalIntro"]" Name="Normal">
-    <SelectObject @bind-Value="_value" GetTextCallback="GetTextCallback">
+    <section ignore>
+        @((MarkupString)Localizer["NormalDesc"].Value)
+    </section>
+    <SelectObject @bind-Value="_value" GetTextCallback="GetTextCallback" IsClearable>
         <ListView TItem="ListViews.Product" Items="@Products" OnListViewItemClick="item => OnListViewItemClick(item, context)">
             <BodyTemplate Context="value">
                 <Card>

src/BootstrapBlazor.Server/Locales/en-US.json

@@ -6599,6 +6599,7 @@
     "Intro": "Dropdown boxes are used to display the selection requirements for complex types for any component",
     "NormalTitle": "Basic usage",
     "NormalIntro": "Use built in <code>ListView</code> component to select images",
+    "NormalDesc": "You can use <code>IsClearable</code> to control whether to display the clear button. The default value is <code>false</code>",
     "MinWidthTitle": "Min-Width",
     "MinWidthIntro": "Change the minimum width of the dropdown box by setting the <code>DropdownMinWidth</code> value",
     "HeightTitle": "Height",

src/BootstrapBlazor.Server/Locales/zh-CN.json

@@ -6599,6 +6599,7 @@
     "Intro": "下拉框为任意组件用于展示复杂类型的选择需求",
     "NormalTitle": "基本功能",
     "NormalIntro": "内置 <code>ListView</code> 组件选择图片",
+    "NormalDesc": "可通过 <code>IsClearable</code> 控制是否显示清除小按钮，默认值 <code>false</code>",
     "MinWidthTitle": "设置最小宽度",
     "MinWidthIntro": "通过设置 <code>DropdownMinWidth</code> 值，来改变下拉框最小宽度",
     "HeightTitle": "设置高度",

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.2.7-beta01</Version>
+    <Version>9.2.7-beta02</Version>
   </PropertyGroup>
 
   <ItemGroup>

src/BootstrapBlazor/Components/Select/SelectObject.razor

@@ -31,6 +31,10 @@
             <span class="@AppendClassString"><i class="@DropdownIcon"></i></span>
         }
     </div>
+    @if (GetClearable())
+    {
+        <span class="@ClearClassString" @onclick="OnClearValue"><i class="@ClearIcon"></i></span>
+    }
     <div class="dropdown-menu dropdown-object" style="@GetStyleString">
         @ChildContent(_context)
     </div>

src/BootstrapBlazor/Components/Select/SelectObject.razor.cs

@@ -46,6 +46,19 @@ public partial class SelectObject<TItem>
     [NotNull]
     public string? DropdownIcon { get; set; }
 
+    /// <summary>
+    /// 获得/设置 是否可清除 默认 false
+    /// </summary>
+    [Parameter]
+    public bool IsClearable { get; set; }
+
+    /// <summary>
+    /// 获得/设置 右侧清除图标 默认 fa-solid fa-angle-up
+    /// </summary>
+    [Parameter]
+    [NotNull]
+    public string? ClearIcon { get; set; }
+
     /// <summary>
     /// 获得/设置 下拉列表内容模板
     /// </summary>
@@ -66,6 +79,7 @@ public partial class SelectObject<TItem>
     /// </summary>
     private string? ClassName => CssBuilder.Default("select select-object dropdown")
         .AddClass("disabled", IsDisabled)
+        .AddClass("cls", IsClearable)
         .AddClassFromAttributes(AdditionalAttributes)
         .Build();
 
@@ -89,6 +103,12 @@ public partial class SelectObject<TItem>
         .AddClass($"text-danger", IsValid.HasValue && !IsValid.Value)
         .Build();
 
+    private string? ClearClassString => CssBuilder.Default("clear-icon")
+        .AddClass($"text-{Color.ToDescriptionString()}", Color != Color.None)
+        .AddClass($"text-success", IsValid.HasValue && IsValid.Value)
+        .AddClass($"text-danger", IsValid.HasValue && !IsValid.Value)
+        .Build();
+
     /// <summary>
     /// 获得 PlaceHolder 属性
     /// </summary>
@@ -107,6 +127,12 @@ public partial class SelectObject<TItem>
     [Parameter]
     public RenderFragment<TItem>? Template { get; set; }
 
+    /// <summary>
+    /// 获得/设置 清除文本内容 OnClear 回调方法 默认 null
+    /// </summary>
+    [Parameter]
+    public Func<Task>? OnClearAsync { get; set; }
+
     [Inject]
     [NotNull]
     private IStringLocalizer<Select<TItem>>? Localizer { get; set; }
@@ -151,6 +177,7 @@ protected override void OnParametersSet()
 
         PlaceHolder ??= Localizer[nameof(PlaceHolder)];
         DropdownIcon ??= IconTheme.GetIconByKey(ComponentIcons.SelectDropdownIcon);
+        ClearIcon ??= IconTheme.GetIconByKey(ComponentIcons.SelectClearIcon);
     }
 
     /// <summary>
@@ -159,6 +186,8 @@ protected override void OnParametersSet()
     /// <returns></returns>
     protected override bool IsRequired() => ValidateForm != null;
 
+    private bool GetClearable() => IsClearable && !IsDisabled;
+
     /// <summary>
     /// 获得 Text 显示文字
     /// </summary>
@@ -170,4 +199,15 @@ protected override void OnParametersSet()
     /// </summary>
     /// <returns></returns>
     public Task CloseAsync() => InvokeVoidAsync("close", Id);
+
+    private async Task OnClearValue()
+    {
+        if (OnClearAsync != null)
+        {
+            await OnClearAsync();
+        }
+
+        Value = default;
+        await CloseAsync();
+    }
 }

test/UnitTest/Components/SelectObjectTest.cs

@@ -48,6 +48,24 @@ public async Task Value_Ok()
         await cut.InvokeAsync(() => item.Click());
         Assert.NotNull(v);
         Assert.Equal(url, v.ImageUrl);
+
+        var isClear = false;
+        cut.SetParametersAndRender(pb =>
+        {
+            pb.Add(a => a.IsClearable, true);
+            pb.Add(a => a.OnClearAsync, () =>
+            {
+                isClear = true;
+                return Task.CompletedTask;
+            });
+        });
+        Assert.Contains("clear-icon", cut.Markup);
+
+        var span = cut.Find(".clear-icon");
+        await cut.InvokeAsync(() => span.Click());
+        var input = cut.Find(".form-select");
+        Assert.Null(input.GetAttribute("value"));
+        Assert.True(isClear);
     }
 
     [Fact]
@@ -61,8 +79,12 @@ public void Color_Ok()
             {
                 pb.AddContent(0, "test");
             });
+            pb.Add(a => a.IsClearable, true);
         });
         cut.Contains("border-danger");
+
+        var span = cut.Find(".clear-icon");
+        Assert.True(span.ClassList.Contains("text-danger"));
     }
 
     [Fact]
@@ -182,6 +204,7 @@ public async Task Validate_Ok()
             builder.Add(a => a.Model, model);
             builder.AddChildContent<SelectObject<string>>(pb =>
             {
+                pb.Add(a => a.IsClearable, true);
                 pb.Add(a => a.Value, model.Name);
                 pb.Add(a => a.ValueExpression, Utility.GenerateValueExpression(model, "Name", typeof(string)));
                 pb.Add(a => a.OnValueChanged, v =>
@@ -205,6 +228,9 @@ await cut.InvokeAsync(() =>
         });
         Assert.True(valid);
 
+        var span = cut.Find(".clear-icon");
+        Assert.True(span.ClassList.Contains("text-success"));
+
         model.Name = null;
         var table = cut.FindComponent<SelectObject<string>>();
         table.SetParametersAndRender();
@@ -214,6 +240,9 @@ await cut.InvokeAsync(() =>
             form.Submit();
         });
         Assert.True(invalid);
+
+        span = cut.Find(".clear-icon");
+        Assert.True(span.ClassList.Contains("text-danger"));
     }
 
     class Product