feat(centralui): NodeBrowserDialog search + load-more + type column (T15/T16)

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Dialogs/NodeBrowserDialog.razor

@@ -1,3 +1,4 @@
+@using Microsoft.AspNetCore.Components.Web
 @using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Protocol
 @using ZB.MOM.WW.ScadaBridge.Commons.Messages.Management
 @using ZB.MOM.WW.ScadaBridge.CentralUI.Services
@@ -21,6 +22,50 @@
                         </div>
                     }
 
+                    <div class="input-group mb-3">
+                        <input class="form-control" data-test="node-search-input"
+                               @bind="_searchQuery" @bind:event="oninput"
+                               @onkeydown="SearchOnEnter"
+                               placeholder="Search the address space by name or path…" />
+                        <button class="btn btn-outline-primary" data-test="node-search-button" @onclick="SearchAsync">Search</button>
+                    </div>
+
+                    @if (_searchActive)
+                    {
+                        <div class="node-browser-search mb-3">
+                            @if (_searchResults.Count == 0)
+                            {
+                                <em class="text-muted">No matches.</em>
+                            }
+                            else
+                            {
+                                <ul class="list-unstyled mb-0">
+                                    @foreach (var match in _searchResults)
+                                    {
+                                        var node = match.Node;
+                                        <li data-test="node-search-result" class="py-1">
+                                            <a href="javascript:void(0)"
+                                               class="@(node.NodeId == _selectedNodeId ? "fw-bold text-primary" : "")"
+                                               @onclick="() => SelectBrowseNode(node)">
+                                                @node.DisplayName
+                                            </a>
+                                            <small class="text-muted ms-1">@match.Path</small>
+                                            @if (!string.IsNullOrEmpty(node.DataType))
+                                            {
+                                                <span class="badge bg-light text-muted border ms-1">@node.DataType</span>
+                                            }
+                                        </li>
+                                    }
+                                </ul>
+                            }
+                            @if (_searchCapReached)
+                            {
+                                <small class="text-muted">Showing first 100 matches — refine your search.</small>
+                            }
+                        </div>
+                        <hr />
+                    }
+
                     <div class="node-browser-tree">
                         @if (_rootNodes.Count == 0 && _failure is null)
                         {
@@ -31,7 +76,7 @@
                             <ul class="list-unstyled mb-0">
                                 @foreach (var node in _rootNodes)
                                 {
-                                    <TreeRow Node="node" OnToggle="ToggleAsync" OnSelect="Select" SelectedNodeId="@_selectedNodeId" />
+                                    <TreeRow Node="node" OnToggle="ToggleAsync" OnSelect="Select" OnLoadMore="LoadMoreAsync" SelectedNodeId="@_selectedNodeId" />
                                 }
                             </ul>
                         }
@@ -75,6 +120,13 @@
     private string _failureMessage = "";
     private List<TreeNode> _rootNodes = new();
 
+    // Search state (T16): _searchActive distinguishes "ran a search that found
+    // nothing" from "never searched"; a blank query clears the panel entirely.
+    private string _searchQuery = "";
+    private bool _searchActive;
+    private bool _searchCapReached;
+    private List<AddressSpaceMatch> _searchResults = new();
+
     public sealed class TreeNode
     {
         public TreeNode(string nodeId, string displayName, BrowseNodeClass nodeClass, bool hasChildren)
@@ -90,10 +142,24 @@
         public BrowseNodeClass NodeClass { get; }
         public bool HasChildren { get; }
 
+        /// <summary>
+        /// Friendly DataType name for Variable nodes (T15 type column); null when
+        /// not a Variable or the type read failed. Rendered as a muted badge.
+        /// </summary>
+        public string? DataType { get; init; }
+
         public List<TreeNode>? Children { get; set; }   // null = not loaded yet
         public bool Expanded { get; set; }
         public bool Loading { get; set; }
         public bool Truncated { get; set; }
+
+        /// <summary>
+        /// Opaque adapter cursor from the most recent browse of this node's
+        /// children. Non-null when more children remain (drives the "Load more"
+        /// button); null once the browse is exhausted. Echoed back verbatim to
+        /// <c>BrowseChildrenAsync</c> to fetch the next page.
+        /// </summary>
+        public string? ContinuationToken { get; set; }
     }
 
     private string _runtimeSiteId = "";
@@ -124,10 +190,13 @@
             return;
         }
 
-        _rootNodes = result.Children.Select(c => new TreeNode(c.NodeId, c.DisplayName, c.NodeClass, c.HasChildren)).ToList();
+        _rootNodes = result.Children.Select(ToTreeNode).ToList();
         StateHasChanged();
     }
 
+    private static TreeNode ToTreeNode(BrowseNode c) =>
+        new(c.NodeId, c.DisplayName, c.NodeClass, c.HasChildren) { DataType = c.DataType };
+
     private async Task ToggleAsync(TreeNode node)
     {
         if (!node.HasChildren) return;
@@ -151,15 +220,83 @@
                 return;
             }
 
-            node.Children = result.Children
+            node.Children = result.Children.Select(ToTreeNode).ToList();
-                .Select(c => new TreeNode(c.NodeId, c.DisplayName, c.NodeClass, c.HasChildren))
-                .ToList();
             node.Truncated = result.Truncated;
+            node.ContinuationToken = result.ContinuationToken;
         }
 
         node.Expanded = true;
     }
 
+    // Load-more / BrowseNext (T15): fetch the next page under a truncated node,
+    // APPEND the children (preserve what's already shown + expanded), and refresh
+    // the stored token (null → exhausted → the button disappears).
+    private async Task LoadMoreAsync(TreeNode node)
+    {
+        if (string.IsNullOrEmpty(node.ContinuationToken)) return;
+
+        node.Loading = true;
+        StateHasChanged();
+        var result = await BrowseService.BrowseChildrenAsync(
+            _runtimeSiteId, _runtimeConnectionName, node.NodeId, node.ContinuationToken);
+        node.Loading = false;
+
+        if (result.Failure is not null)
+        {
+            SetFailure(result.Failure);
+            return;
+        }
+
+        node.Children ??= new();
+        node.Children.AddRange(result.Children.Select(ToTreeNode));
+        node.Truncated = result.Truncated;
+        node.ContinuationToken = result.ContinuationToken;
+        StateHasChanged();
+    }
+
+    private Task SearchOnEnter(KeyboardEventArgs e) =>
+        e.Key == "Enter" ? SearchAsync() : Task.CompletedTask;
+
+    // Address-space search (T16): a blank query clears the panel; otherwise run
+    // the bounded recursive search and render matches as a flat selectable list.
+    private async Task SearchAsync()
+    {
+        if (string.IsNullOrWhiteSpace(_searchQuery))
+        {
+            _searchActive = false;
+            _searchResults = new();
+            _searchCapReached = false;
+            StateHasChanged();
+            return;
+        }
+
+        var result = await BrowseService.SearchAsync(
+            _runtimeSiteId, _runtimeConnectionName, _searchQuery.Trim(),
+            maxDepth: 6, maxResults: 100);
+
+        if (result.Failure is not null)
+        {
+            SetFailure(result.Failure);
+            return;
+        }
+
+        _failure = null;
+        _searchActive = true;
+        _searchResults = result.Matches.ToList();
+        _searchCapReached = result.CapReached;
+        StateHasChanged();
+    }
+
+    // Search result click → SAME selection mechanism the tree uses: set the
+    // selected node id (and mirror it into the manual field) so the footer
+    // Select button confirms and OnSelected fires with this node id.
+    private void SelectBrowseNode(BrowseNode node)
+    {
+        if (node.NodeClass != BrowseNodeClass.Variable) return;
+        _selectedNodeId = node.NodeId;
+        _manualNodeId = node.NodeId;
+    }
+
     private void Select(TreeNode node)
     {
         if (node.NodeClass != BrowseNodeClass.Variable) return;

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Dialogs/TreeRow.razor

@@ -19,6 +19,10 @@
            @ondblclick="() => OnSelect.InvokeAsync(Node)">
             @Node.DisplayName <small class="text-muted">(@Node.NodeId)</small>
         </a>
+        @if (!string.IsNullOrEmpty(Node.DataType))
+        {
+            <span class="badge bg-light text-muted border ms-1" data-test="node-type">@Node.DataType</span>
+        }
     }
     else
     {
@@ -35,9 +39,18 @@
         <ul class="list-unstyled ms-4">
             @foreach (var child in Node.Children)
             {
-                <TreeRow Node="child" OnToggle="OnToggle" OnSelect="OnSelect" SelectedNodeId="@SelectedNodeId" />
+                <TreeRow Node="child" OnToggle="OnToggle" OnSelect="OnSelect" OnLoadMore="OnLoadMore" SelectedNodeId="@SelectedNodeId" />
             }
-            @if (Node.Truncated)
+            @if (!string.IsNullOrEmpty(Node.ContinuationToken))
+            {
+                <li>
+                    <button class="btn btn-sm btn-link p-0" data-test="node-load-more"
+                            @onclick="() => OnLoadMore.InvokeAsync(Node)" disabled="@Node.Loading">
+                        @(Node.Loading ? "Loading…" : "Load more")
+                    </button>
+                </li>
+            }
+            else if (Node.Truncated)
             {
                 <li><small class="text-warning">Results truncated — use manual entry if your tag isn't listed.</small></li>
             }
@@ -49,5 +62,6 @@
     [Parameter] public NodeBrowserDialog.TreeNode Node { get; set; } = default!;
     [Parameter] public EventCallback<NodeBrowserDialog.TreeNode> OnToggle { get; set; }
     [Parameter] public EventCallback<NodeBrowserDialog.TreeNode> OnSelect { get; set; }
+    [Parameter] public EventCallback<NodeBrowserDialog.TreeNode> OnLoadMore { get; set; }
     [Parameter] public string? SelectedNodeId { get; set; }
 }

tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests/Components/NodeBrowserDialogSearchTests.cs

@@ -0,0 +1,127 @@
+using Bunit;
+using Microsoft.AspNetCore.Components;
+using Microsoft.Extensions.DependencyInjection;
+using NSubstitute;
+using ZB.MOM.WW.ScadaBridge.CentralUI.Components.Dialogs;
+using ZB.MOM.WW.ScadaBridge.CentralUI.Services;
+using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Protocol;
+using ZB.MOM.WW.ScadaBridge.Commons.Messages.Management;
+
+namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Components;
+
+/// <summary>
+/// Covers the M7-B6 (T15/T16) additions to <c>NodeBrowserDialog</c>: the
+/// address-space search box that renders <see cref="IBrowseService.SearchAsync"/>
+/// matches as a flat selectable list, and that selecting a search result feeds
+/// the SAME selection mechanism the tree uses (so the dialog's existing
+/// <c>OnSelected</c> callback fires the chosen node id on confirm).
+/// </summary>
+public class NodeBrowserDialogSearchTests : BunitContext
+{
+    private readonly IBrowseService _browse = Substitute.For<IBrowseService>();
+
+    public NodeBrowserDialogSearchTests()
+    {
+        Services.AddSingleton(_browse);
+        // The root load fires on ShowAsync; give it an empty (successful) result
+        // so the dialog renders without a failure banner and the tree is empty.
+        _browse.BrowseChildrenAsync(
+                Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string?>(),
+                Arg.Any<string?>(), Arg.Any<CancellationToken>())
+            .Returns(new BrowseNodeResult(Array.Empty<BrowseNode>(), Truncated: false, Failure: null));
+    }
+
+    private static SearchAddressSpaceResult TwoMatches() => new(
+        Matches: new[]
+        {
+            new AddressSpaceMatch(
+                new BrowseNode("ns=2;s=Pump1.Speed", "Speed", BrowseNodeClass.Variable, HasChildren: false, DataType: "Double"),
+                Path: "Devices/Pump1/Speed"),
+            new AddressSpaceMatch(
+                new BrowseNode("ns=2;s=Pump1.Flow", "Flow", BrowseNodeClass.Variable, HasChildren: false, DataType: "Float"),
+                Path: "Devices/Pump1/Flow"),
+        },
+        CapReached: false,
+        Failure: null);
+
+    private IRenderedComponent<NodeBrowserDialog> RenderShown(out string? selected)
+    {
+        string? captured = null;
+        var cut = Render<NodeBrowserDialog>(p => p
+            .Add(c => c.SiteId, "plant-a")
+            .Add(c => c.ConnectionName, "PLC-OPC")
+            .Add(c => c.OnSelected, EventCallback.Factory.Create<string>(this, id => captured = id)));
+
+        cut.InvokeAsync(() => cut.Instance.ShowAsync("plant-a", "PLC-OPC", null));
+        cut.Render();
+
+        // capture box is read back by the caller after assertions
+        _capturedSelection = () => captured;
+        selected = captured;
+        return cut;
+    }
+
+    private Func<string?> _capturedSelection = () => null;
+
+    [Fact]
+    public void Search_RendersMatchRows_WithDataTestHooks()
+    {
+        _browse.SearchAsync(
+                Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(),
+                Arg.Any<int>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
+            .Returns(TwoMatches());
+
+        var cut = RenderShown(out _);
+
+        var input = cut.Find("[data-test=node-search-input]");
+        input.Input("Pump1");
+        cut.Find("[data-test=node-search-button]").Click();
+
+        var rows = cut.FindAll("[data-test=node-search-result]");
+        Assert.Equal(2, rows.Count);
+        Assert.Contains("Speed", cut.Markup);
+        Assert.Contains("Devices/Pump1/Speed", cut.Markup);
+        Assert.Contains("Double", cut.Markup);
+    }
+
+    [Fact]
+    public void ClickingSearchResult_RaisesSelectionCallback_WithNodeId()
+    {
+        _browse.SearchAsync(
+                Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(),
+                Arg.Any<int>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
+            .Returns(TwoMatches());
+
+        var cut = RenderShown(out _);
+
+        cut.Find("[data-test=node-search-input]").Input("Pump1");
+        cut.Find("[data-test=node-search-button]").Click();
+
+        // Click the first result's link — this drives the SAME selection
+        // mechanism the tree uses, so the footer Select button confirms and
+        // OnSelected fires.
+        cut.FindAll("[data-test=node-search-result] a")[0].Click();
+        cut.Find(".modal-footer .btn-primary").Click();
+
+        Assert.Equal("ns=2;s=Pump1.Speed", _capturedSelection());
+    }
+
+    [Fact]
+    public void BlankQuery_ClearsResults()
+    {
+        _browse.SearchAsync(
+                Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(),
+                Arg.Any<int>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
+            .Returns(TwoMatches());
+
+        var cut = RenderShown(out _);
+
+        cut.Find("[data-test=node-search-input]").Input("Pump1");
+        cut.Find("[data-test=node-search-button]").Click();
+        Assert.Equal(2, cut.FindAll("[data-test=node-search-result]").Count);
+
+        cut.Find("[data-test=node-search-input]").Input("");
+        cut.Find("[data-test=node-search-button]").Click();
+        Assert.Empty(cut.FindAll("[data-test=node-search-result]"));
+    }
+}