Show widget file path in inspector

packages/devtools_app/lib/src/screens/inspector/inspector_controller.dart

@@ -31,6 +31,7 @@ import '../../shared/console/primitives/simple_items.dart';
 import '../../shared/diagnostics/diagnostics_node.dart';
 import '../../shared/diagnostics/inspector_service.dart';
 import '../../shared/diagnostics/primitives/instance_ref.dart';
+import '../../shared/diagnostics/primitives/source_location.dart';
 import '../../shared/framework/screen_controllers.dart';
 import '../../shared/globals.dart';
 import '../../shared/managers/notifications.dart';
@@ -55,6 +56,9 @@ typedef WidgetTreeNodeProperties = ({
 
   /// Layout properties for the widget.
   LayoutProperties? layoutProperties,
+
+  /// Source location where the selected widget was created.
+  InspectorSourceLocation? creationLocation,
 });
 
 /// This class is based on the InspectorPanel class from the Flutter IntelliJ
@@ -255,6 +259,7 @@ class InspectorController extends DisposableController
     widgetProperties: [],
     renderProperties: [],
     layoutProperties: null,
+    creationLocation: null,
   ));
 
   /// Whether the implementation widgets are hidden in the widget tree.
@@ -817,14 +822,15 @@ class InspectorController extends DisposableController
     final widgetProperties = <RemoteDiagnosticsNode>[];
     final renderProperties = <RemoteDiagnosticsNode>[];
     LayoutProperties? layoutProperties;
+    InspectorSourceLocation? creationLocation;
     final diagnostic = node?.diagnostic;
     final objectGroupApi = diagnostic?.objectGroupApi;
     if (diagnostic != null && objectGroupApi != null) {
       try {
         // Fetch widget properties:
         final wProperties = await diagnostic.getProperties(objectGroupApi);
         // Check if the selected node has changed, and if so return early:
-        if (_selectedNode.value != node) {
+        if (disposed || _selectedNode.value != node) {
           return;
         }
         widgetProperties.addAll(
@@ -838,11 +844,22 @@ class InspectorController extends DisposableController
           diagnostic,
           forFlexLayout: false,
         );
+        // Fetch creation location from the details subtree. Summary tree nodes
+        // omit creationLocation when loaded with fullDetails: false.
+        final detailsNode = await objectGroupApi.getDetailsSubtree(
+          diagnostic,
+          subtreeDepth: 0,
+        );
+        // Check if the selected node has changed, and if so return early:
+        if (disposed || _selectedNode.value != node) {
+          return;
+        }
+        creationLocation = detailsNode?.creationLocation;
         // Fetch RenderObject properties:
         for (final renderObject in renderProperties) {
           final rProperties = await renderObject.getProperties(objectGroupApi);
           // Check if the selected node has changed, and if so return early:
-          if (_selectedNode.value != node) {
+          if (disposed || _selectedNode.value != node) {
             return;
           }
           renderProperties.addAll(rProperties);
@@ -851,10 +868,12 @@ class InspectorController extends DisposableController
         _log.warning(e, st);
       }
     }
+    if (disposed) return;
     _selectedNodeProperties.value = (
       widgetProperties: widgetProperties,
       renderProperties: renderProperties,
       layoutProperties: layoutProperties,
+      creationLocation: creationLocation,
     );
   }
 

packages/devtools_app/lib/src/screens/inspector/widget_properties/properties_view.dart

@@ -10,6 +10,7 @@ import 'package:flutter/material.dart';
 import '../../../shared/analytics/constants.dart' as gac;
 import '../../../shared/console/widgets/description.dart';
 import '../../../shared/diagnostics/diagnostics_node.dart';
+import '../../../shared/diagnostics/primitives/source_location.dart';
 import '../../../shared/primitives/utils.dart';
 import '../../../shared/ui/tab.dart';
 import '../inspector_controller.dart';
@@ -76,47 +77,56 @@ class _DetailsTableState extends State<DetailsTable> {
         final widgetProperties = properties.widgetProperties;
         final renderProperties = properties.renderProperties;
         final layoutProperties = properties.layoutProperties;
+        final creationLocation = properties.creationLocation;
 
         final renderTabExists = renderProperties.isNotEmpty;
         final flexExplorerTabExists = selectedNode?.isFlexLayout ?? false;
 
-        return AnalyticsTabbedView(
-          gaScreen: gac.inspector,
-          onTabChanged: (int tabIndex) {
-            _lastSelectedTab = _getTabForIndex(
-              tabIndex,
-              renderTabExists: renderTabExists,
-              flexExplorerTabExists: flexExplorerTabExists,
-            );
-          },
-          initialSelectedIndex: _getIndexForTab(
-            _lastSelectedTab ?? _widgetPropertiesTab,
-            renderTabExists: renderTabExists,
-            flexExplorerTabExists: flexExplorerTabExists,
-          ),
-          tabs: [
-            (
-              tab: _widgetPropertiesTab,
-              tabView: PropertiesView(
-                properties: widgetProperties,
-                layoutProperties: layoutProperties,
-                controller: widget.controller,
-                scrollController: _widgetPropertiesScrollController,
-              ),
-            ),
-            if (renderTabExists)
-              (
-                tab: _renderObjectTab,
-                tabView: PropertiesTable(
-                  properties: renderProperties,
-                  scrollController: _renderPropertiesScrollController,
+        return Column(
+          children: [
+            if (_shouldShowCreationLocation(creationLocation))
+              WidgetCreationLocationHeader(location: creationLocation!),
+            Expanded(
+              child: AnalyticsTabbedView(
+                gaScreen: gac.inspector,
+                onTabChanged: (int tabIndex) {
+                  _lastSelectedTab = _getTabForIndex(
+                    tabIndex,
+                    renderTabExists: renderTabExists,
+                    flexExplorerTabExists: flexExplorerTabExists,
+                  );
+                },
+                initialSelectedIndex: _getIndexForTab(
+                  _lastSelectedTab ?? _widgetPropertiesTab,
+                  renderTabExists: renderTabExists,
+                  flexExplorerTabExists: flexExplorerTabExists,
                 ),
+                tabs: [
+                  (
+                    tab: _widgetPropertiesTab,
+                    tabView: PropertiesView(
+                      properties: widgetProperties,
+                      layoutProperties: layoutProperties,
+                      controller: widget.controller,
+                      scrollController: _widgetPropertiesScrollController,
+                    ),
+                  ),
+                  if (renderTabExists)
+                    (
+                      tab: _renderObjectTab,
+                      tabView: PropertiesTable(
+                        properties: renderProperties,
+                        scrollController: _renderPropertiesScrollController,
+                      ),
+                    ),
+                  if (flexExplorerTabExists)
+                    (
+                      tab: _flexExplorerTab,
+                      tabView: FlexLayoutExplorerWidget(widget.controller),
+                    ),
+                ],
               ),
-            if (flexExplorerTabExists)
-              (
-                tab: _flexExplorerTab,
-                tabView: FlexLayoutExplorerWidget(widget.controller),
-              ),
+            ),
           ],
         );
       },
@@ -158,6 +168,48 @@ class _DetailsTableState extends State<DetailsTable> {
     if (renderTabExists) _renderObjectTab,
     if (flexExplorerTabExists) _flexExplorerTab,
   ];
+
+  bool _shouldShowCreationLocation(InspectorSourceLocation? location) {
+    return location?.getFile() != null;
+  }
+}
+
+/// Displays the source file path for the selected widget.
+///
+/// Matches the legacy inspector format: `filename.dart:line:column`.
+class WidgetCreationLocationHeader extends StatelessWidget {
+  const WidgetCreationLocationHeader({super.key, required this.location});
+
+  final InspectorSourceLocation location;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final file = location.getFile();
+    final line = location.getLine();
+    final column = location.getColumn();
+    final shortLocation = '${fileNameFromUri(file)}:$line:$column';
+    final fullLocation = '$file:$line:$column';
+
+    return Container(
+      width: double.infinity,
+      height: defaultHeaderHeight,
+      padding: const EdgeInsets.symmetric(horizontal: denseSpacing),
+      alignment: Alignment.centerLeft,
+      decoration: BoxDecoration(
+        border: Border(bottom: defaultBorderSide(theme)),
+      ),
+      child: DevToolsTooltip(
+        message: fullLocation,
+        child: Text(
+          shortLocation,
+          style: theme.subtleTextStyle,
+          overflow: TextOverflow.ellipsis,
+          maxLines: 1,
+        ),
+      ),
+    );
+  }
 }
 
 /// Displays a widget's properties, including the layout properties and a

packages/devtools_app/lib/src/shared/diagnostics/inspector_service.dart

@@ -921,6 +921,24 @@ abstract class InspectorObjectGroupBase
     );
   }
 
+  @override
+  Future<RemoteDiagnosticsNode?> getDetailsSubtree(
+    RemoteDiagnosticsNode? node, {
+    int subtreeDepth = 2,
+  }) async {
+    if (node == null || node.valueRef.id == null) return null;
+    return parseDiagnosticsNodeDaemon(
+      invokeServiceMethodDaemonParams(
+        WidgetInspectorServiceExtensions.getDetailsSubtree.name,
+        {
+          'objectGroup': groupName,
+          'arg': node.valueRef.id,
+          'subtreeDepth': subtreeDepth.toString(),
+        },
+      ),
+    );
+  }
+
   @override
   bool isLocalClass(RemoteDiagnosticsNode node) =>
       inspectorService.isLocalClass(node);

packages/devtools_app/lib/src/shared/diagnostics/object_group_api.dart

@@ -39,4 +39,10 @@ abstract class InspectorObjectGroupApi<T extends DiagnosticableTree>
   );
 
   Future<List<T>> getProperties(InspectorInstanceRef instanceRef);
+
+  /// Returns a details subtree for [node], including creation location data.
+  ///
+  /// Pass a small [subtreeDepth] (for example `0`) when only node-level details
+  /// such as creation location are needed.
+  Future<T?> getDetailsSubtree(T? node, {int subtreeDepth = 2});
 }

packages/devtools_app/release_notes/NEXT_RELEASE_NOTES.md

@@ -21,7 +21,10 @@ To learn more about DevTools, check out the
 
 ## Inspector updates
 
-TODO: Remove this section if there are not any updates.
+* Added the widget source file path to the Inspector details pane
+  (`filename.dart:line:column`), matching legacy Inspector behavior. -
+  [#9972](https://github.com/flutter/devtools/pull/9972),
+  [#9922](https://github.com/flutter/devtools/issues/9922)
 
 ## Performance updates
 

packages/devtools_app/test/screens/inspector/inspector_integration_test.dart

@@ -708,22 +708,3 @@ Future<void> _resetPubRootDirectories(InspectorService inspectorService) async {
     await inspectorService.addPubRootDirectories([rootLibrary]);
   }
 }
-
-extension _ObjectGroupTestExtension on ObjectGroup {
-  Future<RemoteDiagnosticsNode?> getDetailsSubtree(
-    RemoteDiagnosticsNode? node, {
-    int subtreeDepth = 2,
-  }) async {
-    if (node == null) return null;
-    final args = {
-      'objectGroup': groupName,
-      'arg': node.valueRef.id,
-      'subtreeDepth': subtreeDepth.toString(),
-    };
-    final json = await invokeServiceMethodDaemonParams(
-      WidgetInspectorServiceExtensions.getDetailsSubtree.name,
-      args,
-    );
-    return parseDiagnosticsNodeHelper(json as Map<String, Object?>?);
-  }
-}

packages/devtools_app/test/screens/inspector/widget_creation_location_header_test.dart

@@ -0,0 +1,64 @@
+// Copyright 2026 The Flutter Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file or at https://developers.google.com/open-source/licenses/bsd.
+
+import 'package:devtools_app/src/screens/inspector/widget_properties/properties_view.dart';
+import 'package:devtools_app/src/shared/diagnostics/primitives/source_location.dart';
+import 'package:devtools_app_shared/ui.dart';
+import 'package:devtools_app_shared/utils.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  setUp(() {
+    setGlobal(IdeTheme, IdeTheme());
+  });
+
+  Widget wrapHeader(Widget child) {
+    return MaterialApp(
+      theme: themeFor(
+        isDarkTheme: false,
+        ideTheme: IdeTheme(),
+        theme: ThemeData(useMaterial3: true, colorScheme: lightColorScheme),
+      ),
+      home: Scaffold(body: child),
+    );
+  }
+
+  testWidgets('shows file name with line and column', (
+    WidgetTester tester,
+  ) async {
+    final location = InspectorSourceLocation({
+      'file': 'file:///Users/prismo/flutter_app/lib/main.dart',
+      'line': 109,
+      'column': 23,
+    }, null);
+
+    await tester.pumpWidget(
+      wrapHeader(WidgetCreationLocationHeader(location: location)),
+    );
+
+    expect(find.text('main.dart:109:23'), findsOneWidget);
+  });
+
+  testWidgets('tooltip includes the full file URI', (
+    WidgetTester tester,
+  ) async {
+    final location = InspectorSourceLocation({
+      'file': 'file:///Users/prismo/flutter_app/lib/main.dart',
+      'line': 109,
+      'column': 23,
+    }, null);
+
+    await tester.pumpWidget(
+      wrapHeader(WidgetCreationLocationHeader(location: location)),
+    );
+
+    final tooltip =
+        tester.widget(find.byType(DevToolsTooltip)) as DevToolsTooltip;
+    expect(
+      tooltip.message,
+      'file:///Users/prismo/flutter_app/lib/main.dart:109:23',
+    );
+  });
+}

packages/devtools_test/lib/src/mocks/mocks.dart

@@ -81,6 +81,7 @@ class TestInspectorController extends Fake implements InspectorController {
         widgetProperties: [],
         renderProperties: [],
         layoutProperties: null,
+        creationLocation: null,
       ));
 
   @override