fix: restore passive focus on full-block fields in Zelos

packages/blockly/core/css.ts

@@ -596,6 +596,15 @@ input[type=number] {
       )
   .blocklyPassiveFocus.blocklyField
   > .blocklyFieldRect,
+/* Full-block fields use the block path for their passive focus indicator. */
+.blocklyKeyboardNavigation:not(
+        :has(
+            .blocklyDropDownDiv:focus-within,
+            .blocklyWidgetDiv:focus-within
+          )
+      )
+  .blocklyBlock:has(> .blocklyFullBlockField.blocklyPassiveFocus)
+  > .blocklyPath:not(.blocklyFlyout .blocklyPath),
 /* Icons with passive focus except when widget/dropdown div in use. */
 .blocklyKeyboardNavigation:not(
         :has(

packages/blockly/core/field.ts

@@ -429,6 +429,7 @@ export abstract class Field<T = any>
     // Since full-block fields can be focused from the workspace's tree,
     // they need IDs in the format that the workspace is expecting.
     if (this.isFullBlockField()) {
+      dom.addClass(this.fieldGroup_, 'blocklyFullBlockField');
       this.id_ = idGenerator.getNextUniqueId();
     } else {
       this.id_ = `${sourceBlockSvg.id}_field_${idGenerator.getNextUniqueId()}`;

packages/blockly/tests/mocha/keyboard_navigation_test.ts

@@ -515,6 +515,60 @@ suite('Keyboard navigation on Fields', function () {
   });
 });
 
+suite('Field focus indicators', function () {
+  let workspace: Blockly.WorkspaceSvg;
+
+  setup(function (this: Mocha.Context) {
+    sharedTestSetup.call(this);
+    Blockly.defineBlocksWithJsonArray([
+      {
+        type: 'focus_reporter',
+        message0: '%1',
+        args0: [{type: 'field_input', name: 'TEXT', text: 'value'}],
+        output: null,
+      },
+    ]);
+    workspace = Blockly.inject('blocklyDiv', {
+      ...DEFAULT_INJECT_OPTIONS,
+      renderer: 'zelos',
+      toolbox: {
+        kind: 'categoryToolbox',
+        contents: [
+          {
+            kind: 'category',
+            name: 'Fields',
+            contents: [{kind: 'block', type: 'focus_reporter'}],
+          },
+        ],
+      },
+    });
+    Blockly.keyboardNavigationController.setIsActive(true);
+  });
+
+  teardown(function (this: Mocha.Context) {
+    Blockly.keyboardNavigationController.setIsActive(false);
+    sharedTestTeardown.call(this, workspace);
+    delete Blockly.Blocks['focus_reporter'];
+  });
+
+  test('full-block fields show a passive outline when focus moves to the toolbox', function () {
+    const block = workspace.newBlock('focus_reporter');
+    block.initSvg();
+    block.render();
+    Blockly.getFocusManager().focusNode(block);
+
+    workspace
+      .getInjectionDiv()
+      .dispatchEvent(createKeyDownEvent(Blockly.utils.KeyCodes.T));
+
+    const dashArray = getComputedStyle(
+      block.pathObject.svgPath,
+    ).strokeDasharray;
+    assert.isNotEmpty(dashArray);
+    assert.notEqual(dashArray, 'none');
+  });
+});
+
 suite('Workspace comment navigation', function () {
   let workspace: Blockly.WorkspaceSvg;
   let commentId1: string;