feat(centralui): BindingGroupBuilder.ApplyObject — per-module bulk rewrite to <object>.<member>, blank clears

src/ZB.MOM.WW.ScadaBridge.CentralUI/Services/BindingGroupBuilder.cs

@@ -114,4 +114,22 @@ public static class BindingGroupBuilder
         }
         return any ? (candidate, false) : (null, false);
     }
+
+    /// <summary>Result of a bulk apply for one member.</summary>
+    public sealed record BindingChange(string CanonicalName, int? ConnectionId, string? Override);
+
+    /// <summary>
+    /// Rewrites every member of <paramref name="group"/> to
+    /// <c>{objectPath}.{memberTail}</c> on <paramref name="connectionId"/>. A blank
+    /// <paramref name="objectPath"/> clears the overrides (template default applies) and
+    /// leaves the connection as given. Surrounding whitespace and a trailing '.' are tolerated.
+    /// </summary>
+    public static IReadOnlyList<BindingChange> ApplyObject(BindingGroup group, int? connectionId, string? objectPath)
+    {
+        var obj = (objectPath ?? string.Empty).Trim().TrimEnd('.');
+        return group.Members
+            .Select(m => new BindingChange(m.Row.CanonicalName, connectionId,
+                obj.Length == 0 ? null : obj + "." + m.MemberTail))
+            .ToList();
+    }
 }

tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests/Services/BindingGroupBuilderTests.cs

@@ -111,4 +111,35 @@ public class BindingGroupBuilderTests
         var rows = new[] { Row("M.A", "A", 1, "Obj.A"), Row("M.B", "B", 1, "Obj.Other") };
         Assert.True(Assert.Single(BindingGroupBuilder.Build(rows)).IsObjectMixed);
     }
+
+    [Fact]
+    public void ApplyObject_RewritesEveryMember_AndSetsConnection()
+    {
+        var g = Assert.Single(BindingGroupBuilder.Build(new[]
+        {
+            Row("RightMESReceiver.MoveInFlag", "MoveInFlag", 1, "MESReceiver_024.MoveInFlag"),
+            Row("RightMESReceiver.ScanStateCmd", "ScanStateCmd", null, null),
+        }));
+        var changes = BindingGroupBuilder.ApplyObject(g, connectionId: 1, objectPath: " MESReceiver_022. ");
+        Assert.Equal(2, changes.Count);
+        Assert.Equal(("RightMESReceiver.MoveInFlag", 1, "MESReceiver_022.MoveInFlag"), (changes[0].CanonicalName, changes[0].ConnectionId, changes[0].Override));
+        Assert.Equal(("RightMESReceiver.ScanStateCmd", 1, "MESReceiver_022.ScanStateCmd"), (changes[1].CanonicalName, changes[1].ConnectionId, changes[1].Override));
+    }
+
+    [Fact]
+    public void ApplyObject_NestedTail_KeepsNesting()
+    {
+        var g = Assert.Single(BindingGroupBuilder.Build(new[] { Row("LeftReactorSide.LeakTest.DeltaVac", "DeltaVac", 1, null) }));
+        var c = Assert.Single(BindingGroupBuilder.ApplyObject(g, 1, "Left_002"));
+        Assert.Equal("Left_002.LeakTest.DeltaVac", c.Override);
+    }
+
+    [Fact]
+    public void ApplyObject_EmptyObject_ClearsOverrides_KeepsConnection()
+    {
+        var g = Assert.Single(BindingGroupBuilder.Build(new[] { Row("M.A", "A", 1, "Obj.A") }));
+        var c = Assert.Single(BindingGroupBuilder.ApplyObject(g, 2, ""));
+        Assert.Null(c.Override);
+        Assert.Equal(2, c.ConnectionId);
+    }
 }