Revert longPress/Tap and Gallery changes (#17269)

Revert longPress/Tap and Gallery changes

examples/flutter_gallery/lib/gallery/demos.dart

@@ -153,41 +153,17 @@ List<GalleryDemo> _buildGalleryDemos() {
       routeName: BottomNavigationDemo.routeName,
       buildRoute: (BuildContext context) => new BottomNavigationDemo(),
     ),
-    new GalleryDemo(
-      title: 'Bottom sheet: Modal',
-      subtitle: 'A dismissable bottom sheet',
-      icon: GalleryIcons.bottom_sheets,
-      category: _kMaterialComponents,
-      routeName: ModalBottomSheetDemo.routeName,
-      buildRoute: (BuildContext context) => new ModalBottomSheetDemo(),
-    ),
-    new GalleryDemo(
-      title: 'Bottom sheet: Persistent',
-      subtitle: 'A bottom sheet that sticks around',
-      icon: GalleryIcons.bottom_sheet_persistent,
-      category: _kMaterialComponents,
-      routeName: PersistentBottomSheetDemo.routeName,
-      buildRoute: (BuildContext context) => new PersistentBottomSheetDemo(),
-    ),
     new GalleryDemo(
       title: 'Buttons',
-      subtitle: 'Flat, raised, dropdown, and more',
+      subtitle: 'All kinds: flat, raised, dropdown, icon, etc',
       icon: GalleryIcons.generic_buttons,
       category: _kMaterialComponents,
       routeName: ButtonsDemo.routeName,
       buildRoute: (BuildContext context) => new ButtonsDemo(),
     ),
-    new GalleryDemo(
-      title: 'Buttons: Floating Action Button',
-      subtitle: 'FAB with transitions',
-      icon: GalleryIcons.buttons,
-      category: _kMaterialComponents,
-      routeName: TabsFabDemo.routeName,
-      buildRoute: (BuildContext context) => new TabsFabDemo(),
-    ),
     new GalleryDemo(
       title: 'Cards',
-      subtitle: 'Baseline cards with rounded corners',
+      subtitle: 'Material with rounded corners and a drop shadow',
       icon: GalleryIcons.cards,
       category: _kMaterialComponents,
       routeName: CardsDemo.routeName,
@@ -195,7 +171,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Chips',
-      subtitle: 'Labeled with delete buttons and avatars',
+      subtitle: 'Label with an optional delete button and avatar',
       icon: GalleryIcons.chips,
       category: _kMaterialComponents,
       routeName: ChipDemo.routeName,
@@ -210,16 +186,32 @@ List<GalleryDemo> _buildGalleryDemos() {
       buildRoute: (BuildContext context) => new DataTableDemo(),
     ),
     new GalleryDemo(
-      title: 'Dialogs',
-      subtitle: 'Simple, alert, and fullscreen',
+      title: 'Date and time pickers',
+      subtitle: 'Date and time selection widgets',
+      icon: GalleryIcons.event,
+      category: _kMaterialComponents,
+      routeName: DateAndTimePickerDemo.routeName,
+      buildRoute: (BuildContext context) => new DateAndTimePickerDemo(),
+    ),
+    new GalleryDemo(
+      title: 'Dialog',
+      subtitle: 'All kinds: simple, alert, fullscreen, etc',
       icon: GalleryIcons.dialogs,
       category: _kMaterialComponents,
       routeName: DialogDemo.routeName,
       buildRoute: (BuildContext context) => new DialogDemo(),
     ),
+    new GalleryDemo(
+      title: 'Drawer',
+      subtitle: 'Navigation drawer with a standard header',
+      icon: GalleryIcons.menu,
+      category: _kMaterialComponents,
+      routeName: DrawerDemo.routeName,
+      buildRoute: (BuildContext context) => new DrawerDemo(),
+    ),
     new GalleryDemo(
       title: 'Expand/collapse list control',
-      subtitle: 'A list with one sub-list level',
+      subtitle: 'List with one level of sublists',
       icon: GalleryIcons.expand_all,
       category: _kMaterialComponents,
       routeName: TwoLevelListDemo.routeName,
@@ -233,6 +225,14 @@ List<GalleryDemo> _buildGalleryDemos() {
       routeName: ExpansionPanelsDemo.routeName,
       buildRoute: (BuildContext context) => new ExpansionPanelsDemo(),
     ),
+    new GalleryDemo(
+      title: 'Floating action button',
+      subtitle: 'Action buttons with transitions',
+      icon: GalleryIcons.buttons,
+      category: _kMaterialComponents,
+      routeName: TabsFabDemo.routeName,
+      buildRoute: (BuildContext context) => new TabsFabDemo(),
+    ),
     new GalleryDemo(
       title: 'Grid',
       subtitle: 'Row and column layout',
@@ -243,28 +243,28 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Icons',
-      subtitle: 'Enabled and disabled icons with opacity',
+      subtitle: 'Enabled and disabled icons with varying opacity',
       icon: GalleryIcons.sentiment_very_satisfied,
       category: _kMaterialComponents,
       routeName: IconsDemo.routeName,
       buildRoute: (BuildContext context) => new IconsDemo(),
     ),
     new GalleryDemo(
-      title: 'Lists',
-      subtitle: 'Scrolling list layouts',
-      icon: GalleryIcons.list_alt,
-      category: _kMaterialComponents,
-      routeName: ListDemo.routeName,
-      buildRoute: (BuildContext context) => const ListDemo(),
-    ),
-    new GalleryDemo(
-      title: 'Lists: leave-behind list items',
+      title: 'Leave-behind list items',
       subtitle: 'List items with hidden actions',
       icon: GalleryIcons.lists_leave_behind,
       category: _kMaterialComponents,
       routeName: LeaveBehindDemo.routeName,
       buildRoute: (BuildContext context) => const LeaveBehindDemo(),
     ),
+    new GalleryDemo(
+      title: 'List',
+      subtitle: 'Layout variations for scrollable lists',
+      icon: GalleryIcons.list_alt,
+      category: _kMaterialComponents,
+      routeName: ListDemo.routeName,
+      buildRoute: (BuildContext context) => const ListDemo(),
+    ),
     new GalleryDemo(
       title: 'Menus',
       subtitle: 'Menu buttons and simple menus',
@@ -274,15 +274,15 @@ List<GalleryDemo> _buildGalleryDemos() {
       buildRoute: (BuildContext context) => const MenuDemo(),
     ),
     new GalleryDemo(
-      title: 'Navigation drawer',
-      subtitle: 'Navigation drawer with standard header',
-      icon: GalleryIcons.menu,
+      title: 'Modal bottom sheet',
+      subtitle: 'Modal sheet that slides up from the bottom',
+      icon: GalleryIcons.bottom_sheets,
       category: _kMaterialComponents,
-      routeName: DrawerDemo.routeName,
-      buildRoute: (BuildContext context) => new DrawerDemo(),
+      routeName: ModalBottomSheetDemo.routeName,
+      buildRoute: (BuildContext context) => new ModalBottomSheetDemo(),
     ),
     new GalleryDemo(
-      title: 'Pagination',
+      title: 'Page selector',
       subtitle: 'PageView with indicator',
       icon: GalleryIcons.page_control,
       category: _kMaterialComponents,
@@ -290,16 +290,16 @@ List<GalleryDemo> _buildGalleryDemos() {
       buildRoute: (BuildContext context) => new PageSelectorDemo(),
     ),
     new GalleryDemo(
-      title: 'Pickers',
-      subtitle: 'Date and time selection widgets',
-      icon: GalleryIcons.event,
+      title: 'Persistent bottom sheet',
+      subtitle: 'Sheet that slides up from the bottom',
+      icon: GalleryIcons.bottom_sheet_persistent,
       category: _kMaterialComponents,
-      routeName: DateAndTimePickerDemo.routeName,
-      buildRoute: (BuildContext context) => new DateAndTimePickerDemo(),
+      routeName: PersistentBottomSheetDemo.routeName,
+      buildRoute: (BuildContext context) => new PersistentBottomSheetDemo(),
     ),
     new GalleryDemo(
       title: 'Progress indicators',
-      subtitle: 'Linear, circular, indeterminate',
+      subtitle: 'All kinds: linear, circular, indeterminate, etc',
       icon: GalleryIcons.progress_activity,
       category: _kMaterialComponents,
       routeName: ProgressIndicatorDemo.routeName,
@@ -313,6 +313,14 @@ List<GalleryDemo> _buildGalleryDemos() {
       routeName: OverscrollDemo.routeName,
       buildRoute: (BuildContext context) => const OverscrollDemo(),
     ),
+    new GalleryDemo(
+      title: 'Scrollable tabs',
+      subtitle: 'Tab bar that scrolls',
+      category: _kMaterialComponents,
+      icon: GalleryIcons.tabs,
+      routeName: ScrollableTabsDemo.routeName,
+      buildRoute: (BuildContext context) => new ScrollableTabsDemo(),
+    ),
     new GalleryDemo(
       title: 'Selection controls',
       subtitle: 'Checkboxes, radio buttons, and switches',
@@ -323,7 +331,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Sliders',
-      subtitle: 'Widgets for selecting a value by swiping',
+      subtitle: 'Widgets that select a value by dragging the slider thumb',
       icon: GalleryIcons.sliders,
       category: _kMaterialComponents,
       routeName: SliderDemo.routeName,
@@ -331,7 +339,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Snackbar',
-      subtitle: 'Temporary messaging',
+      subtitle: 'Temporary message that appears at the bottom',
       icon: GalleryIcons.snackbar,
       category: _kMaterialComponents,
       routeName: SnackBarDemo.routeName,
@@ -345,14 +353,6 @@ List<GalleryDemo> _buildGalleryDemos() {
       routeName: TabsDemo.routeName,
       buildRoute: (BuildContext context) => new TabsDemo(),
     ),
-    new GalleryDemo(
-      title: 'Tabs: Scrolling',
-      subtitle: 'Tab bar that scrolls',
-      category: _kMaterialComponents,
-      icon: GalleryIcons.tabs,
-      routeName: ScrollableTabsDemo.routeName,
-      buildRoute: (BuildContext context) => new ScrollableTabsDemo(),
-    ),
     new GalleryDemo(
       title: 'Text fields',
       subtitle: 'Single line of editable text and numbers',
@@ -363,7 +363,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Tooltips',
-      subtitle: 'Short message displayed on long-press',
+      subtitle: 'Short message displayed after a long-press',
       icon: GalleryIcons.tooltip,
       category: _kMaterialComponents,
       routeName: TooltipDemo.routeName,
@@ -373,6 +373,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     // Cupertino Components
     new GalleryDemo(
       title: 'Activity Indicator',
+      subtitle: 'Cupertino styled activity indicator',
       icon: GalleryIcons.cupertino_progress,
       category: _kCupertinoComponents,
       routeName: CupertinoProgressIndicatorDemo.routeName,
@@ -380,6 +381,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Buttons',
+      subtitle: 'Cupertino styled buttons',
       icon: GalleryIcons.generic_buttons,
       category: _kCupertinoComponents,
       routeName: CupertinoButtonsDemo.routeName,
@@ -387,6 +389,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Dialogs',
+      subtitle: 'Cupertino styled dialogs',
       icon: GalleryIcons.dialogs,
       category: _kCupertinoComponents,
       routeName: CupertinoDialogDemo.routeName,
@@ -394,6 +397,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Navigation',
+      subtitle: 'Cupertino styled navigation patterns',
       icon: GalleryIcons.bottom_navigation,
       category: _kCupertinoComponents,
       routeName: CupertinoNavigationDemo.routeName,
@@ -401,6 +405,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Pickers',
+      subtitle: 'Cupertino styled pickers',
       icon: GalleryIcons.event,
       category: _kCupertinoComponents,
       routeName: CupertinoPickerDemo.routeName,
@@ -408,6 +413,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Pull to refresh',
+      subtitle: 'Cupertino styled refresh controls',
       icon: GalleryIcons.cupertino_pull_to_refresh,
       category: _kCupertinoComponents,
       routeName: CupertinoRefreshControlDemo.routeName,
@@ -415,6 +421,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Sliders',
+      subtitle: 'Cupertino styled sliders',
       icon: GalleryIcons.sliders,
       category: _kCupertinoComponents,
       routeName: CupertinoSliderDemo.routeName,
@@ -422,6 +429,7 @@ List<GalleryDemo> _buildGalleryDemos() {
     ),
     new GalleryDemo(
       title: 'Switches',
+      subtitle: 'Cupertino styled switches',
       icon: GalleryIcons.cupertino_switch,
       category: _kCupertinoComponents,
       routeName: CupertinoSwitchDemo.routeName,

examples/flutter_gallery/lib/gallery/home.dart

@@ -177,25 +177,6 @@ class _DemoItem extends StatelessWidget {
     final bool isDark = theme.brightness == Brightness.dark;
     final double textScaleFactor = MediaQuery.of(context)?.textScaleFactor ?? 1.0;
 
-    final List<Widget> titleChildren = <Widget>[
-      new Text(
-        demo.title,
-        style: theme.textTheme.subhead.copyWith(
-          color: isDark ? Colors.white : const Color(0xFF202124),
-        ),
-      ),
-    ];
-    if (demo.subtitle != null) {
-      titleChildren.add(
-        new Text(
-          demo.subtitle,
-          style: theme.textTheme.body1.copyWith(
-            color: isDark ? Colors.white : const Color(0xFF60646B)
-          ),
-        ),
-      );
-    }
-
     return new RawMaterialButton(
       padding: EdgeInsets.zero,
       splashColor: theme.primaryColor.withOpacity(0.12),
@@ -221,7 +202,19 @@ class _DemoItem extends StatelessWidget {
               child: new Column(
                 mainAxisAlignment: MainAxisAlignment.center,
                 crossAxisAlignment: CrossAxisAlignment.stretch,
-                children: titleChildren,
+                children: <Widget>[
+                  new Text(
+                    demo.title,
+                    style: theme.textTheme.subhead.copyWith(
+                      color: isDark ? Colors.white : const Color(0xFF202124),
+                    ),
+                  ),
+                  new Text(
+                    demo.subtitle,
+                    style: theme.textTheme.body1.copyWith(
+                      color: isDark ? Colors.white : const Color(0xFF60646B)),
+                  ),
+                ],
               ),
             ),
             const SizedBox(width: 44.0),

examples/flutter_gallery/test_driver/transitions_perf_test.dart

@@ -21,8 +21,8 @@ const FileSystem _fs = const LocalFileSystem();
 // --trace-startup, as we do in this test, the VM stores trace events in an
 // endless buffer instead of a ring buffer.
 //
-// These names must match GalleryItem titles from kAllGalleryDemos
-// in examples/flutter_gallery/lib/gallery/demos.dart
+// These names must match GalleryItem titles from  kAllGalleryItems
+// in examples/flutter_gallery/lib/gallery.item.dart
 const List<String> kProfiledDemos = const <String>[
   'Shrine',
   'Contact profile',
@@ -31,14 +31,14 @@ const List<String> kProfiledDemos = const <String>[
   'Buttons',
   'Cards',
   'Chips',
-  'Pickers',
-  'Dialogs',
+  'Date and time pickers',
+  'Dialog',
 ];
 
 // Demos that will be backed out of within FlutterDriver.runUnsynchronized();
 //
-// These names must match GalleryItem titles from kAllGalleryDemos
-// in examples/flutter_gallery/lib/gallery/demos.dart
+// These names must match GalleryItem titles from  kAllGalleryItems
+// in examples/flutter_gallery/lib/gallery.item.dart
 const List<String> kUnsynchronizedDemos = const <String>[
   'Progress indicators',
   'Activity Indicator',

packages/flutter/lib/src/material/feedback.dart

@@ -4,8 +4,6 @@
 
 import 'dart:async';
 
-import 'package:flutter/rendering.dart';
-import 'package:flutter/semantics.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 
@@ -88,7 +86,6 @@ class Feedback {
   ///  * [wrapForTap] to trigger platform-specific feedback before executing a
   ///    [GestureTapCallback].
   static Future<Null> forTap(BuildContext context) async {
-    context.findRenderObject().sendSemanticsEvent(const TapSemanticEvent());
     switch (_platform(context)) {
       case TargetPlatform.android:
       case TargetPlatform.fuchsia:
@@ -127,7 +124,6 @@ class Feedback {
   ///  * [wrapForLongPress] to trigger platform-specific feedback before
   ///    executing a [GestureLongPressCallback].
   static Future<Null> forLongPress(BuildContext context) {
-    context.findRenderObject().sendSemanticsEvent(const LongPressSemanticsEvent());
     switch (_platform(context)) {
       case TargetPlatform.android:
       case TargetPlatform.fuchsia:

packages/flutter/lib/src/material/toggleable.dart

@@ -285,7 +285,6 @@ abstract class RenderToggleable extends RenderConstrainedBox {
         onChanged(false);
         break;
     }
-    sendSemanticsEvent(const TapSemanticEvent());
   }
 
   void _handleTapUp(TapUpDetails details) {

packages/flutter/lib/src/rendering/object.dart

@@ -2165,25 +2165,6 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
     // Nothing to do by default.
   }
 
-  /// Sends a [SemanticsEvent] associated with this render object's [SemanticsNode].
-  ///
-  /// If this render object has no semantics information, the first parent
-  /// render object with a non-null semantic node is used.
-  /// 
-  /// If semantics are disabled, no events are dispatched.
-  ///
-  /// See [SemanticsNode.sendEvent] for a full description of the behavior.
-  void sendSemanticsEvent(SemanticsEvent semanticsEvent) {
-    if (owner.semanticsOwner == null)
-      return;
-    if (_semantics != null) {
-      _semantics.sendEvent(semanticsEvent);
-    } else if (parent != null) {
-      final RenderObject renderParent = parent;
-      renderParent.sendSemanticsEvent(semanticsEvent);
-    }
-  }
-
   // Use [_semanticsConfiguration] to access.
   SemanticsConfiguration _cachedSemanticsConfiguration;
 

packages/flutter/lib/src/semantics/semantics_event.dart

@@ -90,7 +90,7 @@ class AnnounceSemanticsEvent extends SemanticsEvent {
 }
 
 /// An event for a semantic announcement of a tooltip.
-///
+/// 
 /// This is only used by Android to announce tooltip values.
 class TooltipSemanticsEvent extends SemanticsEvent {
 
@@ -107,29 +107,3 @@ class TooltipSemanticsEvent extends SemanticsEvent {
     };
   }
 }
-
-/// An event which triggers long press semantic feedback.
-///
-/// Currently only honored on Android. Triggers a long-press specific sound
-/// when TalkBack is enabled.
-class LongPressSemanticsEvent extends SemanticsEvent {
-
-  /// Constructs an event that triggers a long-press semantic feedback by the platform.
-  const LongPressSemanticsEvent() : super('longPress');
-
-  @override
-  Map<String, dynamic> getDataMap() => const <String, dynamic>{};
-}
-
-/// An event which triggers tap semantic feedback.
-///
-/// Currently only honored on Android. Triggers a tap specific sound when
-/// TalkBack is enabled.
-class TapSemanticEvent extends SemanticsEvent {
-
-  /// Constructs an event that triggers a long-press semantic feedback by the platform.
-  const TapSemanticEvent() : super('tap');
-
-  @override
-  Map<String, dynamic> getDataMap() => const <String, dynamic>{};
-}

packages/flutter/lib/src/semantics/semantics_service.dart

@@ -34,8 +34,7 @@ class SemanticsService {
 
   /// Sends a semantic announcement of a tooltip.
   /// 
-  /// Currently only honored on Android. The contents of [message] will be
-  /// read by TalkBack.
+  /// This is only used by Android.
   static Future<Null> tooltip(String message) async {
     final TooltipSemanticsEvent event = new TooltipSemanticsEvent(message);
     await SystemChannels.accessibility.send(event.toMap());

packages/flutter/test/material/checkbox_test.dart

@@ -5,7 +5,6 @@
 import 'dart:ui';
 
 import 'package:flutter/rendering.dart';
-import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter/material.dart';
 
@@ -186,44 +185,4 @@ void main() {
     await tester.pumpAndSettle();
     expect(checkBoxValue, null);
   });
-
-  testWidgets('has semantic events', (WidgetTester tester) async {
-    dynamic semanticEvent;
-    bool checkboxValue = false;
-    SystemChannels.accessibility.setMockMessageHandler((dynamic message) {
-      semanticEvent = message;
-    });
-    final SemanticsTester semanticsTester = new SemanticsTester(tester);
-
-    await tester.pumpWidget(
-      new Material(
-        child: new StatefulBuilder(
-          builder: (BuildContext context, StateSetter setState) {
-            return new Checkbox(
-              value: checkboxValue,
-              onChanged: (bool value) {
-                setState(() {
-                  checkboxValue = value;
-                });
-              },
-            );
-          },
-        ),
-      ),
-    );
-
-    await tester.tap(find.byType(Checkbox));
-    final RenderObject object = tester.firstRenderObject(find.byType(Checkbox));
-
-    expect(checkboxValue, true);
-    expect(semanticEvent, <String, dynamic>{
-      'type': 'tap',
-      'nodeId': object.debugSemantics.id,
-      'data': <String, dynamic>{},
-    });
-    expect(object.debugSemantics.getSemanticsData().hasAction(SemanticsAction.tap), true);
-
-    SystemChannels.accessibility.setMockMessageHandler(null);
-    semanticsTester.dispose();
-  });
 }

packages/flutter/test/material/feedback_test.dart

-import 'dart:ui';
-
 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'package:flutter/material.dart';
-import 'package:flutter/rendering.dart';
-import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-import '../widgets/semantics_tester.dart';
 import 'feedback_tester.dart';
 
 void main () {
@@ -26,23 +21,8 @@ void main () {
   });
 
   group('Feedback on Android', () {
-    List<Map<String, Object>> semanticEvents;
-
-    setUp(() {
-      semanticEvents = <Map<String, Object>>[];
-      SystemChannels.accessibility.setMockMessageHandler((dynamic message) {
-        final Map<dynamic, dynamic> typedMessage = message;
-        semanticEvents.add(typedMessage.cast<String, Object>());
-      });
-    });
-
-    tearDown(() {
-      SystemChannels.accessibility.setMockMessageHandler(null);
-    });
 
     testWidgets('forTap', (WidgetTester tester) async {
-      final SemanticsTester semanticsTester = new SemanticsTester(tester);
-
       await tester.pumpWidget(new TestWidget(
         tapHandler: (BuildContext context) {
           return () => Feedback.forTap(context);
@@ -51,27 +31,14 @@ void main () {
       await tester.pumpAndSettle(kWaitDuration);
       expect(feedback.hapticCount, 0);
       expect(feedback.clickSoundCount, 0);
-      expect(semanticEvents, isEmpty);
 
       await tester.tap(find.text('X'));
       await tester.pumpAndSettle(kWaitDuration);
-      final RenderObject object = tester.firstRenderObject(find.byType(GestureDetector));
-
       expect(feedback.hapticCount, 0);
       expect(feedback.clickSoundCount, 1);
-      expect(semanticEvents.single, <String, dynamic>{
-        'type': 'tap',
-        'nodeId': object.debugSemantics.id,
-        'data': <String, dynamic>{},
-      });
-      expect(object.debugSemantics.getSemanticsData().hasAction(SemanticsAction.tap), true);
-
-      semanticsTester.dispose();
     });
 
     testWidgets('forTap Wrapper', (WidgetTester tester) async {
-      final SemanticsTester semanticsTester = new SemanticsTester(tester);
-
       int callbackCount = 0;
       final VoidCallback callback = () {
         callbackCount++;
@@ -82,7 +49,6 @@ void main () {
           return Feedback.wrapForTap(callback, context);
         },
       ));
-
       await tester.pumpAndSettle(kWaitDuration);
       expect(feedback.hapticCount, 0);
       expect(feedback.clickSoundCount, 0);
@@ -90,24 +56,12 @@ void main () {
 
       await tester.tap(find.text('X'));
       await tester.pumpAndSettle(kWaitDuration);
-      final RenderObject object = tester.firstRenderObject(find.byType(GestureDetector));
-
       expect(feedback.hapticCount, 0);
       expect(feedback.clickSoundCount, 1);
       expect(callbackCount, 1);
-      expect(semanticEvents.single, <String, dynamic>{
-        'type': 'tap',
-        'nodeId': object.debugSemantics.id,
-        'data': <String, dynamic>{},
-      });
-      expect(object.debugSemantics.getSemanticsData().hasAction(SemanticsAction.tap), true);
-      
-      semanticsTester.dispose();
     });
 
     testWidgets('forLongPress', (WidgetTester tester) async {
-      final SemanticsTester semanticsTester = new SemanticsTester(tester);
-      
       await tester.pumpWidget(new TestWidget(
         longPressHandler: (BuildContext context) {
           return () => Feedback.forLongPress(context);
@@ -119,23 +73,11 @@ void main () {
 
       await tester.longPress(find.text('X'));
       await tester.pumpAndSettle(kWaitDuration);
-      final RenderObject object = tester.firstRenderObject(find.byType(GestureDetector));
-
       expect(feedback.hapticCount, 1);
       expect(feedback.clickSoundCount, 0);
-      expect(semanticEvents.single, <String, dynamic>{
-        'type': 'longPress',
-        'nodeId': object.debugSemantics.id,
-        'data': <String, dynamic>{},
-      });
-      expect(object.debugSemantics.getSemanticsData().hasAction(SemanticsAction.longPress), true);
-
-      semanticsTester.dispose();
     });
 
     testWidgets('forLongPress Wrapper', (WidgetTester tester) async {
-      final SemanticsTester semanticsTester = new SemanticsTester(tester);
-
       int callbackCount = 0;
       final VoidCallback callback = () {
         callbackCount++;
@@ -147,26 +89,15 @@ void main () {
         },
       ));
       await tester.pumpAndSettle(kWaitDuration);
-      final RenderObject object = tester.firstRenderObject(find.byType(GestureDetector));
-
       expect(feedback.hapticCount, 0);
       expect(feedback.clickSoundCount, 0);
       expect(callbackCount, 0);
 
       await tester.longPress(find.text('X'));
       await tester.pumpAndSettle(kWaitDuration);
-      
       expect(feedback.hapticCount, 1);
       expect(feedback.clickSoundCount, 0);
       expect(callbackCount, 1);
-      expect(semanticEvents.single, <String, dynamic>{
-        'type': 'longPress',
-        'nodeId': object.debugSemantics.id,
-        'data': <String, dynamic>{},
-      });
-      expect(object.debugSemantics.getSemanticsData().hasAction(SemanticsAction.longPress), true);
-
-      semanticsTester.dispose();
     });
 
   });

packages/flutter/test/material/radio_test.dart

@@ -5,7 +5,6 @@
 import 'dart:ui';
 
 import 'package:flutter/rendering.dart';
-import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:flutter/material.dart';
 
@@ -163,39 +162,4 @@ void main() {
 
     semantics.dispose();
   });
-
-  testWidgets('has semantic events', (WidgetTester tester) async {
-    final SemanticsTester semantics = new SemanticsTester(tester);
-    final Key key = new UniqueKey();
-    dynamic semanticEvent;
-    int radioValue = 2;
-    SystemChannels.accessibility.setMockMessageHandler((dynamic message) {
-      semanticEvent = message;
-    });
-
-    await tester.pumpWidget(new Material(
-      child: new Radio<int>(
-        key: key,
-        value: 1,
-        groupValue: radioValue,
-        onChanged: (int i) {
-          radioValue = i;
-        },
-      ),
-    ));
-
-    await tester.tap(find.byKey(key));
-    final RenderObject object = tester.firstRenderObject(find.byKey(key));
-
-    expect(radioValue, 1);
-    expect(semanticEvent, <String, dynamic>{
-      'type': 'tap',
-      'nodeId': object.debugSemantics.id,
-      'data': <String, dynamic>{},
-    });
-    expect(object.debugSemantics.getSemanticsData().hasAction(SemanticsAction.tap), true);
-
-    semantics.dispose();
-    SystemChannels.accessibility.setMockMessageHandler(null);
-  });
 }

packages/flutter/test/material/switch_test.dart

@@ -4,11 +4,9 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
-import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 import '../rendering/mock_canvas.dart';
-import '../widgets/semantics_tester.dart';
 
 void main() {
   testWidgets('Switch can toggle on tap', (WidgetTester tester) async {
@@ -189,48 +187,4 @@ void main() {
         ..circle(color: Colors.red[500])
     );
   });
-
-  testWidgets('switch has semantic events', (WidgetTester tester) async {
-    dynamic semanticEvent;
-    bool value = false;
-    SystemChannels.accessibility.setMockMessageHandler((dynamic message) {
-      semanticEvent = message;
-    });
-    final SemanticsTester semanticsTester = new SemanticsTester(tester);
-
-    await tester.pumpWidget(
-      new Directionality(
-        textDirection: TextDirection.ltr,
-        child: new StatefulBuilder(
-          builder: (BuildContext context, StateSetter setState) {
-            return new Material(
-              child: new Center(
-                child: new Switch(
-                  value: value,
-                  onChanged: (bool newValue) {
-                    setState(() {
-                      value = newValue;
-                    });
-                  },
-                ),
-              ),
-            );
-          },
-        ),
-      ),
-    );
-    await tester.tap(find.byType(Switch));
-    final RenderObject object = tester.firstRenderObject(find.byType(Switch));
-    
-    expect(value, true);
-    expect(semanticEvent, <String, dynamic>{
-      'type': 'tap',
-      'nodeId': object.debugSemantics.id,
-      'data': <String, dynamic>{},
-    });
-    expect(object.debugSemantics.getSemanticsData().hasAction(SemanticsAction.tap), true);
-
-    semanticsTester.dispose();
-    SystemChannels.accessibility.setMockMessageHandler(null);
-  });
 }

packages/flutter/test/material/tooltip_test.dart

 import 'dart:ui';
 
-import 'package:flutter/services.dart';
 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
@@ -606,48 +605,6 @@ void main() {
     feedback.dispose();
   });
 
-  testWidgets('has semantic events', (WidgetTester tester) async {
-    final List<dynamic> semanticEvents = <dynamic>[];
-    SystemChannels.accessibility.setMockMessageHandler((dynamic message) {
-      semanticEvents.add(message);
-    });
-    final SemanticsTester semantics = new SemanticsTester(tester);
-
-    await tester.pumpWidget(
-      new MaterialApp(
-        home: new Center(
-          child: new Tooltip(
-            message: 'Foo',
-            child: new Container(
-              width: 100.0,
-              height: 100.0,
-              color: Colors.green[500],
-            ),
-          ),
-        ),
-      ),
-    );
-
-    await tester.longPress(find.byType(Tooltip));
-    final RenderObject object = tester.firstRenderObject(find.byType(Tooltip));
-
-    expect(semanticEvents, unorderedEquals(<dynamic>[
-      <String, dynamic>{
-        'type': 'longPress',
-        'nodeId': findDebugSemantics(object).id,
-        'data': <String, dynamic>{},
-      },
-      <String, dynamic>{
-        'type': 'tooltip',
-        'data': <String, dynamic>{
-          'message': 'Foo',
-        },
-      },
-    ]));
-    semantics.dispose();
-    SystemChannels.accessibility.setMockMessageHandler(null);
-  });
-
   testWidgets('Semantics included', (WidgetTester tester) async {
     final SemanticsTester semantics = new SemanticsTester(tester);
 
@@ -720,9 +677,3 @@ void main() {
   });
 
 }
-
-SemanticsNode findDebugSemantics(RenderObject object) {
-  if (object.debugSemantics != null)
-    return object.debugSemantics;
-  return findDebugSemantics(object.parent);
-}
\ No newline at end of file