Cupertino demo improvements (#667)

* add disabled states, other fixes

* delete cupertino refresh demo

* Update code_segments.dart

* Update code_segments_test.dart

* update goldens

lib/data/demos.dart

@@ -1110,26 +1110,6 @@ List<GalleryDemo> cupertinoDemos(GalleryLocalizations localizations) {
       ],
       category: GalleryDemoCategory.cupertino,
     ),
-    GalleryDemo(
-      title: localizations.demoCupertinoPullToRefreshTitle,
-      icon: GalleryIcons.cupertinoPullToRefresh,
-      slug: 'cupertino-pull-to-refresh',
-      subtitle: localizations.demoCupertinoPullToRefreshSubtitle,
-      configurations: [
-        GalleryDemoConfiguration(
-          title: localizations.demoCupertinoPullToRefreshTitle,
-          description: localizations.demoCupertinoPullToRefreshDescription,
-          documentationUrl:
-              '$_docsBaseUrl/cupertino/CupertinoSliverRefreshControl-class.html',
-          buildRoute: (_) => DeferredWidget(
-              cupertinoLoader,
-              // ignore: prefer_const_constructors
-              () => cupertino_demos.CupertinoRefreshControlDemo()),
-          code: CodeSegments.cupertinoRefreshDemo,
-        ),
-      ],
-      category: GalleryDemoCategory.cupertino,
-    ),
     GalleryDemo(
       title: localizations.demoCupertinoSegmentedControlTitle,
       icon: GalleryIcons.tabs,

lib/demos/cupertino/cupertino_button_demo.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:flutter/cupertino.dart';
-
 import 'package:flutter_gen/gen_l10n/gallery_localizations.dart';
 
 // BEGIN cupertinoButtonDemo
@@ -36,6 +35,21 @@ class CupertinoButtonDemo extends StatelessWidget {
                 localizations.cupertinoButtonWithBackground,
               ),
             ),
+            const SizedBox(height: 30),
+            // Disabled buttons
+            CupertinoButton(
+              onPressed: null,
+              child: Text(
+                localizations.cupertinoButton,
+              ),
+            ),
+            const SizedBox(height: 16),
+            CupertinoButton.filled(
+              onPressed: null,
+              child: Text(
+                localizations.cupertinoButtonWithBackground,
+              ),
+            ),
           ],
         ),
       ),

lib/demos/cupertino/cupertino_demos.dart

@@ -4,7 +4,6 @@ export 'package:gallery/demos/cupertino/cupertino_button_demo.dart';
 export 'package:gallery/demos/cupertino/cupertino_context_menu_demo.dart';
 export 'package:gallery/demos/cupertino/cupertino_navigation_bar_demo.dart';
 export 'package:gallery/demos/cupertino/cupertino_picker_demo.dart';
-export 'package:gallery/demos/cupertino/cupertino_refresh_demo.dart';
 export 'package:gallery/demos/cupertino/cupertino_segmented_control_demo.dart';
 export 'package:gallery/demos/cupertino/cupertino_slider_demo.dart';
 export 'package:gallery/demos/cupertino/cupertino_switch_demo.dart';

lib/demos/cupertino/cupertino_picker_demo.dart

@@ -63,13 +63,15 @@ class _CupertinoPickerDemoState extends State<CupertinoPickerDemo> {
             ),
           );
         },
-        child: _Menu(children: [
-          Text(GalleryLocalizations.of(context)!.demoCupertinoPickerDate),
-          Text(
-            DateFormat.yMMMMd().format(date),
-            style: const TextStyle(color: CupertinoColors.inactiveGray),
-          ),
-        ]),
+        child: _Menu(
+          children: [
+            Text(GalleryLocalizations.of(context)!.demoCupertinoPickerDate),
+            Text(
+              DateFormat.yMMMMd().format(date),
+              style: const TextStyle(color: CupertinoColors.inactiveGray),
+            ),
+          ],
+        ),
       ),
     );
   }

lib/demos/cupertino/cupertino_switch_demo.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:flutter/cupertino.dart';
-
 import 'package:flutter_gen/gen_l10n/gallery_localizations.dart';
 
 // BEGIN cupertinoSwitchDemo
@@ -41,13 +40,22 @@ class _CupertinoSwitchDemoState extends State<CupertinoSwitchDemo>
         child: Semantics(
           container: true,
           label: localizations.demoSelectionControlsSwitchTitle,
-          child: CupertinoSwitch(
-            value: _switchValue.value,
-            onChanged: (value) {
-              setState(() {
-                _switchValue.value = value;
-              });
-            },
+          child: Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              CupertinoSwitch(
+                value: _switchValue.value,
+                onChanged: (value) {
+                  setState(() {
+                    _switchValue.value = value;
+                  });
+                },
+              ),
+              CupertinoSwitch(
+                value: _switchValue.value,
+                onChanged: null,
+              ),
+            ],
           ),
         ),
       ),

test/code_segments_test.dart

@@ -8,12 +8,15 @@ import '../tool/codeviewer_cli/segment_generator.dart';
 import 'utils.dart';
 
 void main() {
+  bool _compareCodeSegments(String a, String b) {
+    return standardizeLineEndings(a) == standardizeLineEndings(b);
+  }
+
   test('verify code segments are up to date', () async {
     final currentCodeSegments = readCodeSegments();
     var newCodeSegments = await getCodeSegments();
 
-    expect(standardizeLineEndings(newCodeSegments),
-        standardizeLineEndings(currentCodeSegments),
+    expect(_compareCodeSegments(currentCodeSegments, newCodeSegments), true,
         reason: 'code_segments.dart is not up to date. '
             'Did you forget to run `flutter pub run grinder update-code-segments`?');
   });