Add link to view release notes from About dialog

packages/devtools_app/lib/src/app.dart

@@ -330,10 +330,12 @@ class DevToolsAppState extends State<DevToolsApp> with AutoDisposeMixin {
             Provider<HoverCardController>.value(
               value: hoverCardController,
             ),
+            Provider<ReleaseNotesController>.value(
+              value: releaseNotesController,
+            ),
           ],
           child: NotificationsView(
             child: ReleaseNotesViewer(
-              releaseNotesController: releaseNotesController,
               child: child,
             ),
           ),

packages/devtools_app/lib/src/framework/about_dialog.dart

@@ -5,15 +5,21 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 
 import '../../devtools.dart' as devtools;
 import '../analytics/constants.dart' as analytics_constants;
 import '../shared/common_widgets.dart';
 import '../shared/dialogs.dart';
 import '../shared/globals.dart';
 import '../shared/theme.dart';
+import 'release_notes/release_notes.dart';
 
 class DevToolsAboutDialog extends StatelessWidget {
+  const DevToolsAboutDialog(this.releaseNotesController);
+
+  final ReleaseNotesController releaseNotesController;
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
@@ -23,7 +29,20 @@ class DevToolsAboutDialog extends StatelessWidget {
         mainAxisSize: MainAxisSize.min,
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          const SelectableText('DevTools version ${devtools.version}'),
+          Row(
+            children: [
+              const SelectableText('DevTools version ${devtools.version}'),
+              const Text(' - '),
+              InkWell(
+                child: Text(
+                  'release notes',
+                  style: theme.linkTextStyle,
+                ),
+                onTap: () =>
+                    releaseNotesController.toggleReleaseNotesVisible(true),
+              ),
+            ],
+          ),
           const SizedBox(height: defaultSpacing),
           ...dialogSubHeader(theme, 'Feedback'),
           Wrap(
@@ -88,14 +107,15 @@ class _DiscordLink extends StatelessWidget {
 class OpenAboutAction extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
+    final releaseNotesController = Provider.of<ReleaseNotesController>(context);
     return DevToolsTooltip(
       message: 'About DevTools',
       child: InkWell(
         onTap: () async {
           unawaited(
             showDialog(
               context: context,
-              builder: (context) => DevToolsAboutDialog(),
+              builder: (context) => DevToolsAboutDialog(releaseNotesController),
             ),
           );
         },

packages/devtools_app/lib/src/framework/release_notes/release_notes.dart

@@ -10,6 +10,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_markdown/flutter_markdown.dart';
 import 'package:http/http.dart' as http;
+import 'package:provider/provider.dart';
 
 import '../../../devtools.dart' as devtools;
 import '../../config_specific/launch_url/launch_url.dart';
@@ -24,12 +25,9 @@ const debugTestReleaseNotes = false;
 class ReleaseNotesViewer extends StatefulWidget {
   const ReleaseNotesViewer({
     Key? key,
-    required this.releaseNotesController,
     required this.child,
   }) : super(key: key);
 
-  final ReleaseNotesController releaseNotesController;
-
   final Widget? child;
 
   @override
@@ -50,20 +48,23 @@ class _ReleaseNotesViewerState extends State<ReleaseNotesViewer>
 
   late bool isVisible;
 
+  late ReleaseNotesController releaseNotesController;
+
   @override
-  void initState() {
-    super.initState();
-    isVisible = widget.releaseNotesController.releaseNotesVisible.value;
-    markdownData = widget.releaseNotesController.releaseNotesMarkdown.value;
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    releaseNotesController = Provider.of<ReleaseNotesController>(context);
+
+    isVisible = releaseNotesController.releaseNotesVisible.value;
+    markdownData = releaseNotesController.releaseNotesMarkdown.value;
 
     visibilityController = longAnimationController(this);
     visibilityAnimation =
         Tween<double>(begin: 1.0, end: 0).animate(visibilityController);
 
-    addAutoDisposeListener(widget.releaseNotesController.releaseNotesVisible,
-        () {
+    addAutoDisposeListener(releaseNotesController.releaseNotesVisible, () {
       setState(() {
-        isVisible = widget.releaseNotesController.releaseNotesVisible.value;
+        isVisible = releaseNotesController.releaseNotesVisible.value;
         if (isVisible) {
           visibilityController.forward();
         } else {
@@ -72,11 +73,10 @@ class _ReleaseNotesViewerState extends State<ReleaseNotesViewer>
       });
     });
 
-    markdownData = widget.releaseNotesController.releaseNotesMarkdown.value;
-    addAutoDisposeListener(widget.releaseNotesController.releaseNotesMarkdown,
-        () {
+    markdownData = releaseNotesController.releaseNotesMarkdown.value;
+    addAutoDisposeListener(releaseNotesController.releaseNotesMarkdown, () {
       setState(() {
-        markdownData = widget.releaseNotesController.releaseNotesMarkdown.value;
+        markdownData = releaseNotesController.releaseNotesMarkdown.value;
       });
     });
   }
@@ -96,7 +96,7 @@ class _ReleaseNotesViewerState extends State<ReleaseNotesViewer>
             children: [
               if (child != null) child,
               ReleaseNotes(
-                releaseNotesController: widget.releaseNotesController,
+                releaseNotesController: releaseNotesController,
                 visibilityAnimation: visibilityAnimation,
                 markdownData: markdownData,
                 width: width,
@@ -197,19 +197,19 @@ class ReleaseNotesController {
   final _releaseNotesVisible = ValueNotifier<bool>(false);
 
   void _init() {
-    if (server.isDevToolsServerAvailable) {
+    if (debugTestReleaseNotes || server.isDevToolsServerAvailable) {
       _maybeFetchReleaseNotes();
     }
   }
 
   void _maybeFetchReleaseNotes() async {
-    final lastReleaseNotesShownVersion =
-        await server.getLastShownReleaseNotesVersion();
-    SemanticVersion previousVersion;
-    if (debugTestReleaseNotes || lastReleaseNotesShownVersion.isEmpty) {
-      previousVersion = SemanticVersion();
-    } else {
-      previousVersion = SemanticVersion.parse(lastReleaseNotesShownVersion);
+    SemanticVersion previousVersion = SemanticVersion();
+    if (server.isDevToolsServerAvailable) {
+      final lastReleaseNotesShownVersion =
+          await server.getLastShownReleaseNotesVersion();
+      if (lastReleaseNotesShownVersion.isNotEmpty) {
+        previousVersion = SemanticVersion.parse(lastReleaseNotesShownVersion);
+      }
     }
     // Parse the current version instead of using [devtools.version] directly to
     // strip off any build metadata (any characters following a '+' character).

packages/devtools_app/test/shared/about_dialog_test.dart

@@ -7,6 +7,7 @@ import 'package:devtools_app/src/config_specific/ide_theme/ide_theme.dart';
 import 'package:devtools_app/src/extension_points/extensions_base.dart';
 import 'package:devtools_app/src/extension_points/extensions_external.dart';
 import 'package:devtools_app/src/framework/about_dialog.dart';
+import 'package:devtools_app/src/framework/release_notes/release_notes.dart';
 import 'package:devtools_app/src/service/service_manager.dart';
 import 'package:devtools_app/src/shared/globals.dart';
 import 'package:devtools_test/devtools_test.dart';
@@ -18,7 +19,7 @@ void main() {
 
   group('About Dialog', () {
     setUp(() {
-      aboutDialog = DevToolsAboutDialog();
+      aboutDialog = DevToolsAboutDialog(ReleaseNotesController());
       final fakeServiceManager = FakeServiceManager();
       when(fakeServiceManager.vm.version).thenReturn('1.9.1');
       mockConnectedApp(
@@ -41,6 +42,7 @@ void main() {
       await tester.pumpWidget(wrap(aboutDialog));
       expect(find.text('About DevTools'), findsOneWidget);
       expect(findSubstring(aboutDialog, devtools.version), findsOneWidget);
+      expect(find.text('release notes'), findsOneWidget);
     });
 
     testWidgets('Feedback section', (WidgetTester tester) async {