Preserve focus inside grid editors

tests/circuit-grid-model.test.ts

@@ -5,6 +5,7 @@ import {
   buildCircuitEditPatch,
   buildDeviceRowEditPatch,
   formatValue,
+  isGridEditorControlTarget,
   getBlockSortValue,
   getCellKind,
   getCircuitValue,
@@ -50,6 +51,18 @@ const circuit: CircuitTreeCircuitDto = {
 };
 
 describe("circuit grid model", () => {
+  it("does not route clicks from active editor controls back to the grid cell", () => {
+    const inputTarget = {
+      closest: (selector: string) =>
+        selector === "input, select, textarea" ? {} : null,
+    };
+    const cellTarget = { closest: () => null };
+
+    assert.equal(isGridEditorControlTarget(inputTarget), true);
+    assert.equal(isGridEditorControlTarget(cellTarget), false);
+    assert.equal(isGridEditorControlTarget(null), false);
+  });
+
   it("keeps the equipment identifier locked as the first column", () => {
     assert.equal(allColumns[0].key, "equipmentIdentifier");
     assert.equal(allColumns[0].locked, true);