refactor: Migrate Demo Search to use FluentAutocomplete

examples/Demo/Shared/Microsoft.FluentUI.AspNetCore.Components.xml

@@ -4256,6 +4256,16 @@
             Gets or sets the placeholder value of the element, generally used to provide a hint to the user.
             </summary>
         </member>
+        <member name="P:Microsoft.FluentUI.AspNetCore.Components.FluentAutocomplete`1.ValueText">
+            <summary>
+            Gets or sets the text field value.
+            </summary>
+        </member>
+        <member name="P:Microsoft.FluentUI.AspNetCore.Components.FluentAutocomplete`1.ValueTextChanged">
+            <summary>
+            Gets or sets the callback that is invoked when the text field value changes.
+            </summary>
+        </member>
         <member name="P:Microsoft.FluentUI.AspNetCore.Components.FluentAutocomplete`1.Multiple">
             <summary>
             For <see cref="T:Microsoft.FluentUI.AspNetCore.Components.FluentAutocomplete`1"/>, this property must be True.
@@ -4341,6 +4351,11 @@
             Gets or sets the icon used for the Search button. By default: Search icon.
             </summary>
         </member>
+        <member name="P:Microsoft.FluentUI.AspNetCore.Components.FluentAutocomplete`1.ShowOverlayOnEmptyResults">
+            <summary>
+            Gets or sets whether the dropdown is shown when there are no items.
+            </summary>
+        </member>
         <member name="P:Microsoft.FluentUI.AspNetCore.Components.FluentAutocomplete`1.ListStyleValue">
             <summary />
         </member>

examples/Demo/Shared/Shared/DemoSearch.razor

@@ -1,24 +1,18 @@
-<FluentSearch @bind-Value="@_searchValue"
-              Immediate
-              @bind-Value:after="HandleSearchInput"
-              Id="demo-search"
-              Placeholder="Search everything..."/>
-
-@if (_searchResults is not null)
-{
-    <FluentMenu Anchor="demo-search"
-                HorizontalPosition="HorizontalPosition.Right"
-                @bind-Open="_visible">
-        @foreach (var searchResult in _searchResults)
-        {
-            var item = NavProvider.FlattenedMenuItems.First(x => x.Title == searchResult);
-
-            <FluentMenuItem OnClick="@(() => HandleSearchClicked(item))">
-                <span slot="start">
-                    <FluentIcon Value="@(item.Icon)" Class="search-result-icon" Color="Color.Neutral" Slot="start"/>
-                </span>
-                @item.Title
-            </FluentMenuItem>
-        }
-    </FluentMenu>
-}
+<FluentAutocomplete TOption="NavItem"
+                    Width="200px"
+                    AutoComplete="off"
+                    Placeholder="Search everything..."
+                    MaximumSelectedOptions="1"
+                    OptionText="@(item => item.Title)"
+                    @bind-ValueText="@_searchTerm"
+                    @bind-SelectedOptions="_selectedOptions"
+                    @bind-SelectedOptions:after="HandleSearchClicked"
+                    OnOptionsSearch="@HandleSearchInput"
+                    ShowOverlayOnEmptyResults="false">
+    <OptionTemplate>
+        <span slot="start">
+            <FluentIcon Value="@(context.Icon)" Class="search-result-icon" Color="Color.Neutral" Slot="start"/>
+        </span>
+        @context.Title
+    </OptionTemplate>
+</FluentAutocomplete>

examples/Demo/Shared/Shared/DemoSearch.razor.cs

@@ -4,60 +4,50 @@
 
 using System.Diagnostics;
 using Microsoft.AspNetCore.Components;
+using Microsoft.FluentUI.AspNetCore.Components;
 
 namespace FluentUI.Demo.Shared.Shared;
 
 public partial class DemoSearch
 {
     [Inject]
     protected DemoNavProvider NavProvider { get; set; } = default!;
-    
+
     [Inject]
     protected NavigationManager NavigationManager { get; set; } = default!;
 
-    private string? _searchValue = string.Empty;
-
-    private bool _visible;
+    private string? _searchTerm = "";
+    private IEnumerable<NavItem>? _selectedOptions = [];
 
-    private List<string>? _searchResults = DefaultResults();
-    private static List<string>? DefaultResults() => null;
-
-    private void HandleSearchInput()
+    private void HandleSearchInput(OptionsSearchEventArgs<NavItem> e)
     {
-        if (string.IsNullOrWhiteSpace(_searchValue))
+        var searchTerm = e.Text;
+
+        if (string.IsNullOrWhiteSpace(searchTerm))
         {
-            _searchResults = DefaultResults();
-            _searchValue = string.Empty;
+            e.Items = null;
         }
         else
         {
-            var searchTerm = _searchValue.ToLower();
-
-            if (searchTerm.Length > 0)
-            {
-                _searchResults = NavProvider.FlattenedMenuItems
-                    .Where(x => x.Href != null) // Ignore Group headers
-                    .Where(x => x.Title.Contains(searchTerm, StringComparison.OrdinalIgnoreCase))
-                    .Select(x => x.Title)
-                    .ToList();
-
-                if (_searchResults.Count == 0)
-                {
-                    _searchResults = DefaultResults();
-                }
-            }
+            e.Items = NavProvider.FlattenedMenuItems
+                .Where(x => x.Href != null) // Ignore Group headers
+                .Where(x => x.Title.Contains(searchTerm, StringComparison.OrdinalIgnoreCase));
         }
-
-        _visible = _searchResults is not null;
     }
 
-    private void HandleSearchClicked(NavItem item)
+    private void HandleSearchClicked()
     {
-        _searchValue = string.Empty;
-        _searchResults = DefaultResults();
-        _visible = false;
+        _searchTerm = null;
+        var targetHref = _selectedOptions?.SingleOrDefault()?.Href;
+        _selectedOptions = [];
         InvokeAsync(StateHasChanged);
 
-        NavigationManager.NavigateTo(item.Href ?? throw new UnreachableException("Item has no href"));
+        // Ignore clearing the search bar
+        if (targetHref is null)
+        {
+            return;
+        }
+
+        NavigationManager.NavigateTo(targetHref ?? throw new UnreachableException("Item has no href"));
     }
 }

src/Core/Components/List/FluentAutocomplete.razor

@@ -14,11 +14,11 @@
                          AutoComplete="@AutoComplete"
                          Appearance="@Appearance"
                          Disabled="@Disabled"
-                         Placeholder="@(this.SelectedOptions?.Any() == false ? Placeholder : string.Empty)"
+                         Placeholder="@(SelectedOptions?.Any() is false ? Placeholder : string.Empty)"
                          aria-expanded="@(IsMultiSelectOpened ? "true" : "false")"
                          aria-controls="@(IsMultiSelectOpened ? IdPopup : string.Empty)"
                          aria-label="@GetAutocompleteAriaLabel()"
-                         Value="@_valueText"
+                         Value="@ValueText"
                          Required="@Required"
                          @onclick="@OnDropDownExpandedAsync"
                          @oninput="@InputHandlerAsync"
@@ -66,7 +66,7 @@
             }
             @if (!Disabled)
             {
-                if (this.SelectedOptions?.Any() == true || !string.IsNullOrEmpty(_valueText))
+                if (this.SelectedOptions?.Any() == true || !string.IsNullOrEmpty(ValueText))
                 {
                     if (IconDismiss != null)
                     {
@@ -94,7 +94,7 @@
         </FluentTextField>
 
         @* List of available items *@
-        @if (IsMultiSelectOpened)
+        @if (IsMultiSelectOpened && (ShowOverlayOnEmptyResults || Items?.Any() == true))
         {
             <FluentOverlay OnClose="@(e => IsMultiSelectOpened = false)" Visible="true" Transparent="true" FullScreen="true" />
             <FluentAnchoredRegion Anchor="@Id"

src/Core/Components/List/FluentAutocomplete.razor.cs

@@ -12,8 +12,6 @@ public partial class FluentAutocomplete<TOption> : ListComponentBase<TOption> wh
     public static string AccessibilityReachedMaxItems = "The maximum number of selected items has been reached.";
     internal const string JAVASCRIPT_FILE = "./_content/Microsoft.FluentUI.AspNetCore.Components/Components/List/FluentAutocomplete.razor.js";
 
-    private string _valueText = string.Empty;
-
     public new FluentTextField? Element { get; set; } = default!;
 
     /// <summary>
@@ -39,6 +37,18 @@ public FluentAutocomplete()
     [Parameter]
     public string? Placeholder { get; set; }
 
+    /// <summary>
+    /// Gets or sets the text field value.
+    /// </summary>
+    [Parameter]
+    public string ValueText { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the callback that is invoked when the text field value changes.
+    /// </summary>
+    [Parameter]
+    public EventCallback<string> ValueTextChanged { get; set; }
+
     /// <summary>
     /// For <see cref="FluentAutocomplete{TOption}"/>, this property must be True.
     /// Set the <see cref="MaximumSelectedOptions"/> property to 1 to select just one item.
@@ -155,6 +165,12 @@ public override bool Multiple
     [Parameter]
     public Icon? IconSearch { get; set; } = new CoreIcons.Regular.Size16.Search();
 
+    /// <summary>
+    /// Gets or sets whether the dropdown is shown when there are no items.
+    /// </summary>
+    [Parameter]
+    public bool ShowOverlayOnEmptyResults { get; set; } = true;
+
     /// <summary />
     private string? ListStyleValue => new StyleBuilder()
         .AddStyle("width", Width, when: !string.IsNullOrEmpty(Width))
@@ -202,7 +218,8 @@ private string ComponentWidth
     /// <summary />
     protected async Task InputHandlerAsync(ChangeEventArgs e)
     {
-        _valueText = e.Value?.ToString() ?? string.Empty;
+        ValueText = e.Value?.ToString() ?? string.Empty;
+        await ValueTextChanged.InvokeAsync(ValueText);
 
         if (MaximumSelectedOptions > 0 && SelectedOptions?.Count() >= MaximumSelectedOptions)
         {
@@ -216,13 +233,15 @@ protected async Task InputHandlerAsync(ChangeEventArgs e)
         var args = new OptionsSearchEventArgs<TOption>()
         {
             Items = Items ?? Array.Empty<TOption>(),
-            Text = _valueText,
+            Text = ValueText,
         };
 
         await OnOptionsSearch.InvokeAsync(args);
 
-        Items = args.Items.Take(MaximumOptionsSearch);
-        SelectableItem = Items.FirstOrDefault();
+        Items = args.Items?.Take(MaximumOptionsSearch);
+        SelectableItem = Items != null
+            ? Items.FirstOrDefault()
+            : default;
     }
 
     private static readonly KeyCode[] CatchOnly = new[] { KeyCode.Escape, KeyCode.Enter, KeyCode.Backspace, KeyCode.Down, KeyCode.Up };
@@ -289,7 +308,7 @@ Task KeyDown_Escape()
         async Task KeyDown_Backspace()
         {
             // Remove last selected item
-            if (string.IsNullOrEmpty(_valueText) &&
+            if (string.IsNullOrEmpty(ValueText) &&
                 SelectedOptions != null && SelectedOptions.Any())
             {
                 await RemoveSelectedItemAsync(SelectedOptions.LastOrDefault());
@@ -298,11 +317,11 @@ async Task KeyDown_Backspace()
             }
 
             // Remove last char
-            if (!string.IsNullOrEmpty(_valueText))
+            if (!string.IsNullOrEmpty(ValueText))
             {
                 await InputHandlerAsync(new ChangeEventArgs()
                 {
-                    Value = _valueText.Substring(0, _valueText.Length - 1),
+                    Value = ValueText[..^1],
                 });
                 return;
             }
@@ -388,22 +407,25 @@ protected Task OnDropDownExpandedAsync()
     {
         return InputHandlerAsync(new ChangeEventArgs()
         {
-            Value = _valueText,
+            Value = ValueText,
         });
     }
 
     /// <summary />
-    protected Task OnClearAsync()
+    protected async Task OnClearAsync()
     {
         RemoveAllSelectedItems();
-        _valueText = string.Empty;
-        return RaiseChangedEventsAsync();
+        ValueText = string.Empty;
+        await ValueTextChanged.InvokeAsync(ValueText);
+        await RaiseChangedEventsAsync();
     }
 
     /// <summary />
     protected override async Task OnSelectedItemChangedHandlerAsync(TOption? item)
     {
-        _valueText = string.Empty;
+        ValueText = string.Empty;
+        await ValueTextChanged.InvokeAsync(ValueText);
+
         IsMultiSelectOpened = false;
         await base.OnSelectedItemChangedHandlerAsync(item);
         await DisplayLastSelectedItemAsync();

tests/Core/List/FluentAutocompleteTests.FluentAutocomplete_OnClearWithOverlayHiddenOnEmpty_HasNoOverlay.verified.html

@@ -0,0 +1,9 @@
+
+<div class=" fluent-autocomplete-multiselect" style="width: 100%;" b-hg72r5b4ox="">
+  <fluent-text-field style="width: 100%; min-width: 100%;" placeholder="" id="xxx" value="" current-value="" appearance="outline" blazor:onchange="1" role="combobox" aria-expanded="true" aria-controls="myComponent-popup" aria-label="No items found" blazor:onclick="2" blazor:oninput="3" blazor:onfocusout="4" blazor:elementreference="">
+    <svg slot="end" style="width: 16px; fill: var(--accent-fill-rest); cursor: pointer;" focusable="false" viewBox="0 0 16 16" aria-hidden="true" blazor:onclick="6">
+      <title>Search</title>
+      <path d="M9.1 10.17a4.5 4.5 0 1 1 1.06-1.06l3.62 3.61a.75.75 0 1 1-1.06 1.06l-3.61-3.61Zm.4-3.67a3 3 0 1 0-6 0 3 3 0 0 0 6 0Z"></path>
+    </svg>
+  </fluent-text-field>
+</div>

tests/Core/List/FluentAutocompleteTests.FluentAutocomplete_OnClear_ShowOverlay.verified.html

@@ -0,0 +1,17 @@
+
+<div class=" fluent-autocomplete-multiselect" style="width: 100%;" b-hg72r5b4ox="">
+  <fluent-text-field style="width: 100%; min-width: 100%;" placeholder="" id="xxx" value="" current-value="" appearance="outline" blazor:onchange="1" role="combobox" aria-expanded="true" aria-controls="myComponent-popup" aria-label="No items found" blazor:onclick="2" blazor:oninput="3" blazor:onfocusout="4" blazor:elementreference="">
+    <svg slot="end" style="width: 16px; fill: var(--accent-fill-rest); cursor: pointer;" focusable="false" viewBox="0 0 16 16" aria-hidden="true" blazor:onclick="6">
+      <title>Search</title>
+      <path d="M9.1 10.17a4.5 4.5 0 1 1 1.06-1.06l3.62 3.61a.75.75 0 1 1-1.06 1.06l-3.61-3.61Zm.4-3.67a3 3 0 1 0-6 0 3 3 0 0 0 6 0Z"></path>
+    </svg>
+  </fluent-text-field>
+  <div class="fluent-overlay" style="cursor: auto; position: fixed; z-index: 9900;" blazor:onclick="7" blazor:oncontextmenu="8" blazor:oncontextmenu:preventdefault="" b-xkrr7evqik="">
+    <div style="display: flex; align-items:center; justify-content: center; width: 100%; height: 100%" b-xkrr7evqik=""></div>
+  </div>
+  <fluent-anchored-region anchor="xxx" horizontal-positioning-mode="dynamic" horizontal-default-position="right" horizontal-inset="" horizontal-threshold="0" horizontal-scaling="content" vertical-positioning-mode="dynamic" vertical-default-position="unset" vertical-threshold="0" vertical-scaling="content" auto-update-mode="auto" style="z-index: 9999;" b-2ov9fhztky="" blazor:elementreference="xxx">
+    <div style="z-index: 9999; background-color: var(--neutral-layer-floating); box-shadow: var(--elevation-shadow-flyout); margin-top: 10px; border-radius: calc(var(--control-corner-radius) * 2px); background-color: var(--neutral-layer-floating);" b-2ov9fhztky="">
+      <div id="xxx" role="listbox" style="width: 100%;" tabindex="0" b-hg72r5b4ox=""></div>
+    </div>
+  </fluent-anchored-region>
+</div>

tests/Core/List/FluentAutocompleteTests.FluentAutocomplete_ValueText.verified.html

@@ -0,0 +1,9 @@
+
+<div class=" fluent-autocomplete-multiselect" style="width: 100%;" b-hg72r5b4ox="">
+  <fluent-text-field style="width: 100%; min-width: 100%;" placeholder="" id="xxx" value="Preselected value" current-value="Preselected value" appearance="outline" blazor:onchange="1" role="combobox" aria-expanded="false" aria-controls="" blazor:onclick="2" blazor:oninput="3" blazor:onfocusout="4" blazor:elementreference="xxx">
+    <svg slot="end" style="width: 12px; fill: var(--accent-fill-rest); cursor: pointer;" focusable="false" viewBox="0 0 16 16" aria-hidden="true" blazor:onclick="5">
+      <title>Clear</title>
+      <path d="m2.59 2.72.06-.07a.5.5 0 0 1 .63-.06l.07.06L8 7.29l4.65-4.64a.5.5 0 0 1 .7.7L8.71 8l4.64 4.65c.18.17.2.44.06.63l-.06.07a.5.5 0 0 1-.63.06l-.07-.06L8 8.71l-4.65 4.64a.5.5 0 0 1-.7-.7L7.29 8 2.65 3.35a.5.5 0 0 1-.06-.63l.06-.07-.06.07Z"></path>
+    </svg>
+  </fluent-text-field>
+</div>

tests/Core/List/FluentAutocompleteTests.FluentAutocomplete_ValueText_Clears.verified.html

@@ -0,0 +1,17 @@
+
+<div class=" fluent-autocomplete-multiselect" style="width: 100%;" b-hg72r5b4ox="">
+  <fluent-text-field style="width: 100%; min-width: 100%;" placeholder="" id="xxx" value="" current-value="" appearance="outline" blazor:onchange="1" role="combobox" aria-expanded="true" aria-controls="myComponent-popup" aria-label="No items found" blazor:onclick="2" blazor:oninput="3" blazor:onfocusout="4" blazor:elementreference="">
+    <svg slot="end" style="width: 16px; fill: var(--accent-fill-rest); cursor: pointer;" focusable="false" viewBox="0 0 16 16" aria-hidden="true" blazor:onclick="6">
+      <title>Search</title>
+      <path d="M9.1 10.17a4.5 4.5 0 1 1 1.06-1.06l3.62 3.61a.75.75 0 1 1-1.06 1.06l-3.61-3.61Zm.4-3.67a3 3 0 1 0-6 0 3 3 0 0 0 6 0Z"></path>
+    </svg>
+  </fluent-text-field>
+  <div class="fluent-overlay" style="cursor: auto; position: fixed; z-index: 9900;" blazor:onclick="7" blazor:oncontextmenu="8" blazor:oncontextmenu:preventdefault="" b-xkrr7evqik="">
+    <div style="display: flex; align-items:center; justify-content: center; width: 100%; height: 100%" b-xkrr7evqik=""></div>
+  </div>
+  <fluent-anchored-region anchor="xxx" horizontal-positioning-mode="dynamic" horizontal-default-position="right" horizontal-inset="" horizontal-threshold="0" horizontal-scaling="content" vertical-positioning-mode="dynamic" vertical-default-position="unset" vertical-threshold="0" vertical-scaling="content" auto-update-mode="auto" style="z-index: 9999;" b-2ov9fhztky="" blazor:elementreference="xxx">
+    <div style="z-index: 9999; background-color: var(--neutral-layer-floating); box-shadow: var(--elevation-shadow-flyout); margin-top: 10px; border-radius: calc(var(--control-corner-radius) * 2px); background-color: var(--neutral-layer-floating);" b-2ov9fhztky="">
+      <div id="xxx" role="listbox" style="width: 100%;" tabindex="0" b-hg72r5b4ox=""></div>
+    </div>
+  </fluent-anchored-region>
+</div>