feat(SelectGeneric): add SelectGeneric component (#4838)

* refactor: 重构 SelectedItem 增加构造函数

* refactor: 移动 SelectedItem 到子类

* refactor: 精简代码移除 SingleSelectBase 类

* refactor: 改造 SelectedItem 泛型

* feat: 增加 SelectGeneric 组件

* feat: 增加 ToSelectList 泛型扩展方法

* refactor: 改造 Select 组件移除对泛型的支持

* doc: 更新泛型 Select 组件示例

* test: 更新单元测试

* test: 更新单元测试

* refactor: 增加排除标签

* chore: bump version 9.1.3-beta06

* test: 增加单元测试

* test: 更新单元测试

* test: 增加 Display 单元测试

* test: 更新 Select 单元测试

* refactor: 更新 SelectGeneric 值不存在时的逻辑

Author: ArgoZhang

src/BootstrapBlazor.Shared/Components/Samples/Selects.razor

@@ -442,7 +442,7 @@
     <section ignore>@((MarkupString)Localizer["SelectsGenericDesc"].Value)</section>
     <div class="row">
         <div class="col-12 col-sm-6">
-            <Select Items="_genericItems" @bind-Value="_selectedFoo" IsEditable="true"></Select>
+            <SelectGeneric Items="_genericItems" @bind-Value="_selectedFoo" IsEditable="true"></SelectGeneric>
         </div>
         <div class="col-12 col-sm-6">
             <Display Value="_selectedFoo?.Address"></Display>

src/BootstrapBlazor.Shared/Components/Samples/Selects.razor.cs

@@ -242,7 +242,7 @@ private Task OnTimeZoneValueChanged(string timeZoneId)
         return Task.CompletedTask;
     }
 
-    private readonly List<SelectedItem<Foo>> _genericItems =
+    private readonly List<SelectedItem<Foo?>> _genericItems =
     [
         new() { Text = "Foo1", Value = new Foo() { Id = 1, Address = "Address_F001" } },
         new() { Text = "Foo2", Value = new Foo() { Id = 2, Address = "Address_F002" } },

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.1.3-beta05</Version>
+    <Version>9.1.3-beta06</Version>
   </PropertyGroup>
 
   <ItemGroup>

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

@@ -36,6 +36,19 @@ public partial class MultiSelect<TValue>
         .AddClass("d-none", SelectedItems.Count != 0)
         .Build();
 
+    /// <summary>
+    /// 获得/设置 绑定数据集
+    /// </summary>
+    [Parameter]
+    [NotNull]
+    public IEnumerable<SelectedItem>? Items { get; set; }
+
+    /// <summary>
+    /// 获得/设置 选项模板
+    /// </summary>
+    [Parameter]
+    public RenderFragment<SelectedItem>? ItemTemplate { get; set; }
+
     /// <summary>
     /// 获得/设置 组件 PlaceHolder 文字 默认为 点击进行多选 ...
     /// </summary>

src/BootstrapBlazor/Components/Select/Select.razor

@@ -1,7 +1,7 @@
 @namespace BootstrapBlazor.Components
 @using Microsoft.AspNetCore.Components.Web.Virtualization
 @typeparam TValue
-@inherits SingleSelectBase<TValue>
+@inherits SelectBase<TValue>
 @attribute [BootstrapModuleAutoLoader(JSObjectReference = true)]
 
 @if (IsShowLabel)

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

@@ -12,6 +12,7 @@ namespace BootstrapBlazor.Components;
 /// Select 组件实现类
 /// </summary>
 /// <typeparam name="TValue"></typeparam>
+[ExcludeFromCodeCoverage]
 public partial class Select<TValue> : ISelect, IModelEqualityComparer<TValue>
 {
     [Inject]
@@ -50,7 +51,7 @@ public partial class Select<TValue> : ISelect, IModelEqualityComparer<TValue>
     /// <param name="item"></param>
     /// <returns></returns>
     private string? ActiveItem(SelectedItem item) => CssBuilder.Default("dropdown-item")
-        .AddClass("active", Match(item))
+        .AddClass("active", item.Value == CurrentValueAsString)
         .AddClass("disabled", item.IsDisabled)
         .Build();
 
@@ -191,6 +192,55 @@ public partial class Select<TValue> : ISelect, IModelEqualityComparer<TValue>
     [NotNull]
     private Virtualize<SelectedItem>? VirtualizeElement { get; set; }
 
+    /// <summary>
+    /// 获得/设置 绑定数据集
+    /// </summary>
+    [Parameter]
+    [NotNull]
+    public IEnumerable<SelectedItem>? Items { get; set; }
+
+    /// <summary>
+    /// 获得/设置 选项模板
+    /// </summary>
+    [Parameter]
+    public RenderFragment<SelectedItem>? ItemTemplate { get; set; }
+
+    /// <summary>
+    /// 获得/设置 下拉框项目改变前回调委托方法 返回 true 时选项值改变，否则选项值不变
+    /// </summary>
+    [Parameter]
+    public Func<SelectedItem, Task<bool>>? OnBeforeSelectedItemChange { get; set; }
+
+    /// <summary>
+    /// SelectedItemChanged 回调方法
+    /// </summary>
+    [Parameter]
+    public Func<SelectedItem, Task>? OnSelectedItemChanged { get; set; }
+
+    /// <summary>
+    /// 获得/设置 Swal 图标 默认 Question
+    /// </summary>
+    [Parameter]
+    public SwalCategory SwalCategory { get; set; } = SwalCategory.Question;
+
+    /// <summary>
+    /// 获得/设置 Swal 标题 默认 null
+    /// </summary>
+    [Parameter]
+    public string? SwalTitle { get; set; }
+
+    /// <summary>
+    /// 获得/设置 Swal 内容 默认 null
+    /// </summary>
+    [Parameter]
+    public string? SwalContent { get; set; }
+
+    /// <summary>
+    /// 获得/设置 Footer 默认 null
+    /// </summary>
+    [Parameter]
+    public string? SwalFooter { get; set; }
+
     [Inject]
     [NotNull]
     private IStringLocalizer<Select<TValue>>? Localizer { get; set; }
@@ -214,6 +264,11 @@ public partial class Select<TValue> : ISelect, IModelEqualityComparer<TValue>
 
     private ItemsProviderResult<SelectedItem> _result;
 
+    /// <summary>
+    /// 当前选择项实例
+    /// </summary>
+    private SelectedItem? SelectedItem { get; set; }
+
     private List<SelectedItem> Rows
     {
         get
@@ -234,7 +289,7 @@ private SelectedItem? SelectedRow
 
     private SelectedItem? GetSelectedRow()
     {
-        var item = Rows.Find(Match)
+        var item = Rows.Find(i => i.Value == CurrentValueAsString)
             ?? Rows.Find(i => i.Active)
             ?? Rows.Where(i => !i.IsDisabled).FirstOrDefault()
             ?? GetVirtualizeItem();
@@ -374,8 +429,6 @@ private bool TryParseSelectItem(string value, [MaybeNullWhen(false)] out TValue
     /// <returns></returns>
     protected override Task InvokeInitAsync() => InvokeVoidAsync("init", Id, Interop, nameof(ConfirmSelectedItem));
 
-    private bool Match(SelectedItem i) => i is SelectedItem<TValue> d ? Equals(d.Value, Value) : i.Value.Equals(CurrentValueAsString, StringComparison);
-
     /// <summary>
     /// 客户端回车回调方法
     /// </summary>
@@ -453,13 +506,13 @@ private async Task ValueTypeChanged(SelectedItem item)
     {
         if (_lastSelectedValueString != item.Value)
         {
-            _lastSelectedValueString = item.Value;
 
             item.Active = true;
             SelectedItem = item;
 
             // 触发 StateHasChanged
-            CurrentValueAsString = item.Value;
+            _lastSelectedValueString = item.Value ?? "";
+            CurrentValueAsString = _lastSelectedValueString;
 
             // 触发 SelectedItemChanged 事件
             if (OnSelectedItemChanged != null)
@@ -518,41 +571,13 @@ private async Task OnChange(ChangeEventArgs args)
 
             if (item == null)
             {
-                // 判断是否为泛型 SelectedItem
-                var itemType = Items.GetType();
-                var isGeneric = false;
-                if (itemType.IsGenericType)
-                {
-                    isGeneric = itemType.GetGenericArguments()[0].IsGenericType;
-                }
-                if (isGeneric)
-                {
-                    TValue? val = default;
-                    if (TextConvertToValueCallback != null)
-                    {
-                        val = await TextConvertToValueCallback(v);
-                    }
-                    item = new SelectedItem<TValue>() { Text = v, Value = val };
-                }
-                else
-                {
-                    item = new SelectedItem(v, v);
-                }
+                item = new SelectedItem(v, v);
 
                 var items = new List<SelectedItem>() { item };
                 items.AddRange(Items);
                 Items = items;
-                CurrentValueAsString = v;
-            }
-
-            if (item is SelectedItem<TValue> value)
-            {
-                CurrentValue = value.Value;
-            }
-            else
-            {
-                CurrentValueAsString = v;
             }
+            CurrentValueAsString = v;
 
             if (OnInputChangedCallback != null)
             {

src/BootstrapBlazor/Components/Select/SelectBase.cs

@@ -16,13 +16,6 @@ public abstract class SelectBase<TValue> : PopoverSelectBase<TValue>
     [Parameter]
     public Color Color { get; set; }
 
-    /// <summary>
-    /// 获得/设置 绑定数据集
-    /// </summary>
-    [Parameter]
-    [NotNull]
-    public IEnumerable<SelectedItem>? Items { get; set; }
-
     /// <summary>
     /// 获得/设置 是否显示搜索框 默认为 false 不显示
     /// </summary>
@@ -54,12 +47,6 @@ public abstract class SelectBase<TValue> : PopoverSelectBase<TValue>
     [Parameter]
     public StringComparison StringComparison { get; set; } = StringComparison.OrdinalIgnoreCase;
 
-    /// <summary>
-    /// 获得/设置 选项模板
-    /// </summary>
-    [Parameter]
-    public RenderFragment<SelectedItem>? ItemTemplate { get; set; }
-
     /// <summary>
     /// 获得/设置 分组项模板
     /// </summary>

src/BootstrapBlazor/Components/Select/SelectOption.cs

@@ -8,6 +8,7 @@ namespace BootstrapBlazor.Components;
 /// <summary>
 /// SelectOption 组件
 /// </summary>
+[ExcludeFromCodeCoverage]
 public class SelectOption : ComponentBase
 {
     /// <summary>

src/BootstrapBlazor/Components/Select/SingleSelectBase.cs

@@ -0,0 +1,18 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the Apache 2.0 License
+// See the LICENSE file in the project root for more information.
+// Maintainer: Argo Zhang(argo@live.ca) Website: https://www.blazor.zone
+
+namespace BootstrapBlazor.Components;
+
+/// <summary>
+/// ISelect 接口
+/// </summary>
+public interface ISelectGeneric<TValue>
+{
+    /// <summary>
+    /// 增加 SelectedItem 项方法
+    /// </summary>
+    /// <param name="item"></param>
+    void Add(SelectedItem<TValue> item);
+}