feat(Select): add IsAutoClearSearchTextWhenCollapsed parameter

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

@@ -321,6 +321,14 @@ private AttributeItem[] GetAttributes() =>
             DefaultValue = "false"
         },
         new()
+        {
+            Name = "IsAutoClearSearchTextWhenCollapsed",
+            Description = Localizer["SelectsIsAutoClearSearchTextWhenCollapsed"],
+            Type = "bool",
+            ValueList = "true|false",
+            DefaultValue = "false"
+        },
+        new()
         {
             Name = "DisplayText",
             Description = Localizer["SelectsDisplayText"],

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

@@ -3211,7 +3211,7 @@
     "SelectsCustomTemplateTitle": "Custom option templates",
     "SelectsCustomTemplateIntro": "By setting the <code>ItemTemplate</code> you can customize the option rendering style",
     "SelectsShowSearchTitle": "Drop-down box with search box",
-    "SelectsShowSearchIntro": "Controls whether the search box is displayed by setting the <code>ShowSearch</code> property, which is not displayed by default <b>false</b>",
+    "SelectsShowSearchIntro": "Controls whether the search box is displayed by setting the <code>ShowSearch</code> property, which is not displayed by default <b>false</b>. You can set the <code>IsAutoClearSearchTextWhenCollapsed</code> parameter to control whether the text in the search box is automatically cleared after the drop-down box is collapsed. The default value is <b>false</b>.",
     "SelectsConfirmSelectTitle": "Drop-down box with confirmation",
     "SelectsConfirmSelectIntro": "Block changes to the current value by setting the <code>OnBeforeSelectedItemChange</code> delegate.",
     "SelectsTimeZoneTitle": "Timezone",
@@ -3221,6 +3221,7 @@
     "SwalFooter": "Click Confirm to change the option value and select Cancel to leave the value unchanged",
     "SelectsShowLabel": "Whether to display the front label",
     "SelectsShowSearch": "Whether to display the search box",
+    "SelectsIsAutoClearSearchTextWhenCollapsed": "Whether to automatically clear the search bar when the drop-down box is collapsed",
     "SelectsDisplayText": "The front label displays text",
     "SelectsClass": "Style",
     "SelectsColor": "Color",

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

@@ -3211,7 +3211,7 @@
     "SelectsCustomTemplateTitle": "自定义选项模板",
     "SelectsCustomTemplateIntro": "通过设置 <code>ItemTemplate</code> 可以自定义选项渲染样式",
     "SelectsShowSearchTitle": "带搜索框的下拉框",
-    "SelectsShowSearchIntro": "通过设置 <code>ShowSearch</code> 属性控制是否显示搜索框，默认为 <b>false</b> 不显示搜索框",
+    "SelectsShowSearchIntro": "通过设置 <code>ShowSearch</code> 属性控制是否显示搜索框，默认为 <b>false</b> 不显示搜索框，可以通过设置 <code>IsAutoClearSearchTextWhenCollapsed</code> 参数控制下拉框收起后是否自动清空搜索框内文字，默认值为 <b>false</b> 不清空",
     "SelectsConfirmSelectTitle": "带确认的下拉框",
     "SelectsConfirmSelectIntro": "通过设置 <code>OnBeforeSelectedItemChange</code> 委托，阻止当前值的改变",
     "SelectsTimeZoneTitle": "时区下拉框",
@@ -3221,6 +3221,7 @@
     "SwalFooter": "点击确认改变选项值，选择取消后值不变",
     "SelectsShowLabel": "是否显示前置标签",
     "SelectsShowSearch": "是否显示搜索框",
+    "SelectsIsAutoClearSearchTextWhenCollapsed": "下拉框收起时是否自动清空搜索栏",
     "SelectsDisplayText": "前置标签显示文本",
     "SelectsClass": "样式",
     "SelectsColor": "颜色",

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.6.2-beta05</Version>
+    <Version>9.6.2-beta06</Version>
   </PropertyGroup>
 
   <ItemGroup>

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

@@ -18,26 +18,13 @@ public partial class Select<TValue> : ISelect, ILookup
     [NotNull]
     private SwalService? SwalService { get; set; }
 
-    private string? ClassString => CssBuilder.Default("select dropdown")
-        .AddClass("is-clearable", IsClearable)
-        .AddClassFromAttributes(AdditionalAttributes)
-        .Build();
-
-    private string? InputClassString => CssBuilder.Default("form-select form-control")
-        .AddClass($"border-{Color.ToDescriptionString()}", Color != Color.None && !IsDisabled && !IsValid.HasValue)
-        .AddClass($"border-success", IsValid.HasValue && IsValid.Value)
-        .AddClass($"border-danger", IsValid.HasValue && !IsValid.Value)
-        .AddClass(CssClass).AddClass(ValidCss)
-        .Build();
-
-    private string? ActiveItem(SelectedItem item) => CssBuilder.Default("dropdown-item")
-        .AddClass("active", item.Value == CurrentValueAsString)
-        .AddClass("disabled", item.IsDisabled)
-        .Build();
-
-    private readonly List<SelectedItem> _children = [];
+    [Inject]
+    [NotNull]
+    private IStringLocalizer<Select<TValue>>? Localizer { get; set; }
 
-    private string? ScrollIntoViewBehaviorString => ScrollIntoViewBehavior == ScrollIntoViewBehavior.Smooth ? null : ScrollIntoViewBehavior.ToDescriptionString();
+    [Inject]
+    [NotNull]
+    private ILookupService? InjectLookupService { get; set; }
 
     /// <summary>
     /// Gets or sets the display template. Default is null.
@@ -125,31 +112,47 @@ public partial class Select<TValue> : ISelect, ILookup
     public string? DefaultVirtualizeItemText { get; set; }
 
     /// <summary>
-    /// <inheritdoc/>
+    /// Gets or sets whether auto clear the search text when dropdown closed.
     /// </summary>
-    IEnumerable<SelectedItem>? ILookup.Lookup { get; set; }
+    [Parameter]
+    public bool IsAutoClearSearchTextWhenCollapsed { get; set; }
 
     /// <summary>
-    /// <inheritdoc/>
+    /// Gets or sets the dropdown collapsed callback method.
     /// </summary>
-    StringComparison ILookup.LookupStringComparison { get; set; }
+    [Parameter]
+    public Func<Task>? OnCollapsed { get; set; }
 
-    [Inject]
-    [NotNull]
-    private IStringLocalizer<Select<TValue>>? Localizer { get; set; }
+    IEnumerable<SelectedItem>? ILookup.Lookup { get => Items; set => Items = value; }
 
-    /// <summary>
-    /// Gets or sets the injected lookup service instance.
-    /// </summary>
-    [Inject]
-    [NotNull]
-    private ILookupService? InjectLookupService { get; set; }
+    StringComparison ILookup.LookupStringComparison { get => StringComparison; set => StringComparison = value; }
 
     /// <summary>
     /// <inheritdoc/>
     /// </summary>
     protected override string? RetrieveId() => InputId;
 
+    private string? ClassString => CssBuilder.Default("select dropdown")
+        .AddClass("is-clearable", IsClearable)
+        .AddClassFromAttributes(AdditionalAttributes)
+        .Build();
+
+    private string? InputClassString => CssBuilder.Default("form-select form-control")
+        .AddClass($"border-{Color.ToDescriptionString()}", Color != Color.None && !IsDisabled && !IsValid.HasValue)
+        .AddClass($"border-success", IsValid.HasValue && IsValid.Value)
+        .AddClass($"border-danger", IsValid.HasValue && !IsValid.Value)
+        .AddClass(CssClass).AddClass(ValidCss)
+        .Build();
+
+    private string? ActiveItem(SelectedItem item) => CssBuilder.Default("dropdown-item")
+        .AddClass("active", item.Value == CurrentValueAsString)
+        .AddClass("disabled", item.IsDisabled)
+        .Build();
+
+    private readonly List<SelectedItem> _children = [];
+
+    private string? ScrollIntoViewBehaviorString => ScrollIntoViewBehavior == ScrollIntoViewBehavior.Smooth ? null : ScrollIntoViewBehavior.ToDescriptionString();
+
     private string? InputId => $"{Id}_input";
 
     private bool _init = true;
@@ -169,44 +172,6 @@ private SelectedItem? SelectedRow
         }
     }
 
-    private SelectedItem? GetSelectedRow()
-    {
-        if (Value is null)
-        {
-            _lastSelectedValueString = "";
-            _init = false;
-            return null;
-        }
-
-        var item = IsVirtualize ? GetItemByVirtualized() : GetItemByRows();
-        if (item != null)
-        {
-            if (_init && DisableItemChangedWhenFirstRender)
-            {
-
-            }
-            else
-            {
-                _ = SelectedItemChanged(item);
-                _init = false;
-            }
-        }
-        return item;
-    }
-
-    private SelectedItem? GetItemWithEnumValue() => ValueType.IsEnum ? Rows.Find(i => i.Value == Convert.ToInt32(Value).ToString()) : null;
-
-    private SelectedItem GetItemByVirtualized() => new(CurrentValueAsString, _defaultVirtualizedItemText);
-
-    private SelectedItem? GetItemByRows()
-    {
-        var item = GetItemWithEnumValue()
-            ?? Rows.Find(i => i.Value == CurrentValueAsString)
-            ?? Rows.Find(i => i.Active)
-            ?? Rows.FirstOrDefault(i => !i.IsDisabled);
-        return item;
-    }
-
     /// <summary>
     /// <inheritdoc/>
     /// </summary>
@@ -308,9 +273,30 @@ private bool TryParseSelectItem(string value, [MaybeNullWhen(false)] out TValue
     protected override Task InvokeInitAsync() => InvokeVoidAsync("init", Id, Interop, new
     {
         ConfirmMethodCallback = nameof(ConfirmSelectedItem),
-        SearchMethodCallback = nameof(TriggerOnSearch)
+        SearchMethodCallback = nameof(TriggerOnSearch),
+        TriggerCollapsed = (OnCollapsed != null || IsAutoClearSearchTextWhenCollapsed) ? nameof(TriggerCollapsed) : null
     });
 
+    /// <summary>
+    /// Trigger <see cref="OnCollapsed"/> event callback method. called by JavaScript.
+    /// </summary>
+    /// <returns></returns>
+    [JSInvokable]
+    public async Task TriggerCollapsed()
+    {
+        if (OnCollapsed != null)
+        {
+            await OnCollapsed();
+        }
+
+        if (IsAutoClearSearchTextWhenCollapsed)
+        {
+            SearchText = string.Empty;
+            _itemsCache = null;
+            StateHasChanged();
+        }
+    }
+
     /// <summary>
     /// <inheritdoc/>
     /// </summary>
@@ -440,4 +426,42 @@ private async Task OnChange(ChangeEventArgs args)
             }
         }
     }
+
+    private SelectedItem? GetSelectedRow()
+    {
+        if (Value is null)
+        {
+            _lastSelectedValueString = "";
+            _init = false;
+            return null;
+        }
+
+        var item = IsVirtualize ? GetItemByVirtualized() : GetItemByRows();
+        if (item != null)
+        {
+            if (_init && DisableItemChangedWhenFirstRender)
+            {
+
+            }
+            else
+            {
+                _ = SelectedItemChanged(item);
+                _init = false;
+            }
+        }
+        return item;
+    }
+
+    private SelectedItem? GetItemWithEnumValue() => ValueType.IsEnum ? Rows.Find(i => i.Value == Convert.ToInt32(Value).ToString()) : null;
+
+    private SelectedItem GetItemByVirtualized() => new(CurrentValueAsString, _defaultVirtualizedItemText);
+
+    private SelectedItem? GetItemByRows()
+    {
+        var item = GetItemWithEnumValue()
+            ?? Rows.Find(i => i.Value == CurrentValueAsString)
+            ?? Rows.Find(i => i.Active)
+            ?? Rows.FirstOrDefault(i => !i.IsDisabled);
+        return item;
+    }
 }

src/BootstrapBlazor/Components/Select/Select.razor.js

@@ -10,7 +10,13 @@ export function init(id, invoke, options) {
     }
 
     const search = el.querySelector(".search-text")
-    const popover = Popover.init(el)
+    const popover = Popover.init(el, {
+        hideCallback: () => {
+            if (options.triggerCollapsed) {
+                invoke.invokeMethodAsync(options.triggerCollapsed);
+            }
+        }
+    });
     const input = el.querySelector(`#${id}_input`);
     const select = {
         el, invoke, options,

test/UnitTest/Components/SelectTest.cs

@@ -428,6 +428,34 @@ public void Color_Ok()
         Assert.Contains("border-danger", cut.Markup);
     }
 
+    [Fact]
+    public async Task OnCollapsed_Ok()
+    {
+        var collapsed = false;
+        var cut = Context.RenderComponent<Select<string>>(pb =>
+        {
+            pb.Add(a => a.OnCollapsed, () => { collapsed = true; return Task.CompletedTask; });
+        });
+        await cut.InvokeAsync(() => cut.Instance.TriggerCollapsed());
+        Assert.True(collapsed);
+    }
+
+    [Fact]
+    public async Task IsAutoClearSearchTextWhenCollapsed_Ok()
+    {
+        var cut = Context.RenderComponent<Select<string>>(pb =>
+        {
+            pb.Add(a => a.ShowSearch, true);
+            pb.Add(a => a.IsAutoClearSearchTextWhenCollapsed, true);
+        });
+
+        await cut.InvokeAsync(() => cut.Instance.TriggerOnSearch("123"));
+        cut.Contains("value=\"123\"");
+
+        await cut.InvokeAsync(() => cut.Instance.TriggerCollapsed());
+        cut.Contains("value=\"\"");
+    }
+
     [Fact]
     public void Validate_Ok()
     {