Cleanup: stop accepting DiagnosticsNode as input from DevTools. (#129302)

packages/flutter/lib/src/widgets/widget_inspector.dart

@@ -1722,8 +1722,8 @@ mixin WidgetInspectorService {
     return _safeJsonEncode(_getProperties(diagnosticsNodeId, groupName));
   }
 
-  List<Object>  _getProperties(String? diagnosticsOrDiagnosticableId, String groupName) {
-    final DiagnosticsNode? node = _idToDiagnosticsNode(diagnosticsOrDiagnosticableId);
+  List<Object>  _getProperties(String? diagnosticableId, String groupName) {
+    final DiagnosticsNode? node = _idToDiagnosticsNode(diagnosticableId);
     if (node == null) {
       return const <Object>[];
     }
@@ -1760,28 +1760,22 @@ mixin WidgetInspectorService {
     return _safeJsonEncode(_getChildrenSummaryTree(diagnosticsNodeId, groupName));
   }
 
-  DiagnosticsNode? _idToDiagnosticsNode(String? diagnosticsOrDiagnosticableId) {
-    // TODO(polina-c): start always assuming Diagnosticable, when DevTools stops sending DiagnosticsNode to
-    // APIs that invoke this method.
-    // https://github.com/flutter/devtools/issues/3951
-    final Object? object = toObject(diagnosticsOrDiagnosticableId);
+  DiagnosticsNode? _idToDiagnosticsNode(String? diagnosticableId) {
+    final Object? object = toObject(diagnosticableId);
     return objectToDiagnosticsNode(object);
   }
 
-  /// If posiible, returns [DiagnosticsNode] for the object.
+  /// If possible, returns [DiagnosticsNode] for the object.
   @visibleForTesting
   static DiagnosticsNode? objectToDiagnosticsNode(Object? object) {
-    if (object is DiagnosticsNode) {
-      return object;
-    }
     if (object is Diagnosticable) {
       return object.toDiagnosticsNode();
     }
     return null;
   }
 
-  List<Object> _getChildrenSummaryTree(String? diagnosticsOrDiagnosticableId, String groupName) {
-    final DiagnosticsNode? node = _idToDiagnosticsNode(diagnosticsOrDiagnosticableId);
+  List<Object> _getChildrenSummaryTree(String? diagnosticableId, String groupName) {
+    final DiagnosticsNode? node = _idToDiagnosticsNode(diagnosticableId);
     if (node == null) {
       return <Object>[];
     }
@@ -1791,17 +1785,17 @@ mixin WidgetInspectorService {
   }
 
   /// Returns a JSON representation of the children of the [DiagnosticsNode]
-  /// object that [diagnosticsOrDiagnosticableId] references providing information needed
+  /// object that [diagnosticableId] references providing information needed
   /// for the details subtree view.
   ///
   /// The details subtree shows properties inline and includes all children
   /// rather than a filtered set of important children.
-  String getChildrenDetailsSubtree(String diagnosticsOrDiagnosticableId, String groupName) {
-    return _safeJsonEncode(_getChildrenDetailsSubtree(diagnosticsOrDiagnosticableId, groupName));
+  String getChildrenDetailsSubtree(String diagnosticableId, String groupName) {
+    return _safeJsonEncode(_getChildrenDetailsSubtree(diagnosticableId, groupName));
   }
 
-  List<Object> _getChildrenDetailsSubtree(String? diagnosticsOrDiagnosticableId, String groupName) {
-    final DiagnosticsNode? node = _idToDiagnosticsNode(diagnosticsOrDiagnosticableId);
+  List<Object> _getChildrenDetailsSubtree(String? diagnosticableId, String groupName) {
+    final DiagnosticsNode? node = _idToDiagnosticsNode(diagnosticableId);
     // With this value of minDepth we only expand one extra level of important nodes.
     final InspectorSerializationDelegate delegate = InspectorSerializationDelegate(groupName: groupName, includeProperties: true, service: this);
     return _nodesToJson(node == null ? const <DiagnosticsNode>[] : _getChildrenFiltered(node, delegate), delegate, parent: node);
@@ -1913,19 +1907,19 @@ mixin WidgetInspectorService {
   ///  * [getChildrenDetailsSubtree], a method to get children of a node
   ///    in the details subtree.
   String getDetailsSubtree(
-    String diagnosticsOrDiagnosticableId,
+    String diagnosticableId,
     String groupName, {
     int subtreeDepth = 2,
   }) {
-    return _safeJsonEncode(_getDetailsSubtree(diagnosticsOrDiagnosticableId, groupName, subtreeDepth));
+    return _safeJsonEncode(_getDetailsSubtree(diagnosticableId, groupName, subtreeDepth));
   }
 
   Map<String, Object?>? _getDetailsSubtree(
-    String? diagnosticsOrDiagnosticableId,
+    String? diagnosticableId,
     String? groupName,
     int subtreeDepth,
   ) {
-    final DiagnosticsNode? root = _idToDiagnosticsNode(diagnosticsOrDiagnosticableId);
+    final DiagnosticsNode? root = _idToDiagnosticsNode(diagnosticableId);
     if (root == null) {
       return null;
     }
@@ -1941,15 +1935,12 @@ mixin WidgetInspectorService {
   }
 
   /// Returns a [DiagnosticsNode] representing the currently selected [Element].
-  ///
-  /// If the currently selected [Element] is identical to the [Element]
-  /// referenced by `previousSelectionId` then the previous [DiagnosticsNode] is
-  /// reused.
-  // TODO(polina-c): delete [previousSelectionId] when it is not used in DevTools
-  // https://github.com/flutter/devtools/issues/3951
   @protected
   String getSelectedWidget(String? previousSelectionId, String groupName) {
-    return _safeJsonEncode(_getSelectedWidget(previousSelectionId, groupName));
+    if (previousSelectionId != null) {
+      debugPrint('previousSelectionId is deprecated in API');
+    }
+    return _safeJsonEncode(_getSelectedWidget(null, groupName));
   }
 
   /// Captures an image of the current state of an [object] that is a
@@ -2025,11 +2016,11 @@ mixin WidgetInspectorService {
   Future<Map<String, Object?>> _getLayoutExplorerNode(
     Map<String, String> parameters,
   ) {
-    final String? diagnosticsOrDiagnosticableId = parameters['id'];
+    final String? diagnosticableId = parameters['id'];
     final int subtreeDepth = int.parse(parameters['subtreeDepth']!);
     final String? groupName = parameters['groupName'];
     Map<String, dynamic>? result = <String, dynamic>{};
-    final DiagnosticsNode? root = _idToDiagnosticsNode(diagnosticsOrDiagnosticableId);
+    final DiagnosticsNode? root = _idToDiagnosticsNode(diagnosticableId);
     if (root == null) {
       return Future<Map<String, dynamic>>.value(<String, dynamic>{
         'result': result,
@@ -2233,14 +2224,11 @@ mixin WidgetInspectorService {
   /// if the selected [Element] should be shown in the summary tree otherwise
   /// returns the first ancestor of the selected [Element] shown in the summary
   /// tree.
-  ///
-  /// If the currently selected [Element] is identical to the [Element]
-  /// referenced by `previousSelectionId` then the previous [DiagnosticsNode] is
-  /// reused.
-  // TODO(polina-c): delete paramater [previousSelectionId] when it is not used in DevTools
-  // https://github.com/flutter/devtools/issues/3951
-  String getSelectedSummaryWidget(String previousSelectionId, String groupName) {
-    return _safeJsonEncode(_getSelectedSummaryWidget(previousSelectionId, groupName));
+  String getSelectedSummaryWidget(String? previousSelectionId, String groupName) {
+    if (previousSelectionId != null) {
+      debugPrint('previousSelectionId is deprecated in API');
+    }
+    return _safeJsonEncode(_getSelectedSummaryWidget(null, groupName));
   }
 
   _Location? _getSelectedSummaryWidgetLocation(String? previousSelectionId) {
@@ -3609,7 +3597,6 @@ class InspectorSerializationDelegate implements DiagnosticsSerializationDelegate
     final Map<String, Object?> result = <String, Object?>{};
     final Object? value = node.value;
     if (_interactive) {
-      result['objectId'] = service.toId(node, groupName!);
       result['valueId'] = service.toId(value, groupName!);
     }
     if (summaryTree) {