RenderEditable should dispose created layers. (#135942)

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

@@ -391,6 +391,7 @@ class RenderEditable extends RenderBox with RelayoutWhenSystemFontsChangeMixin,
 
   @override
   void dispose() {
+    _leaderLayerHandler.layer = null;
     _foregroundRenderObject?.dispose();
     _foregroundRenderObject = null;
     _backgroundRenderObject?.dispose();
@@ -2471,14 +2472,17 @@ class RenderEditable extends RenderBox with RelayoutWhenSystemFontsChangeMixin,
     }
   }
 
+  final LayerHandle<LeaderLayer> _leaderLayerHandler = LayerHandle<LeaderLayer>();
+
   void _paintHandleLayers(PaintingContext context, List<TextSelectionPoint> endpoints, Offset offset) {
     Offset startPoint = endpoints[0].point;
     startPoint = Offset(
       clampDouble(startPoint.dx, 0.0, size.width),
       clampDouble(startPoint.dy, 0.0, size.height),
     );
+    _leaderLayerHandler.layer = LeaderLayer(link: startHandleLayerLink, offset: startPoint + offset);
     context.pushLayer(
-      LeaderLayer(link: startHandleLayerLink, offset: startPoint + offset),
+      _leaderLayerHandler.layer!,
       super.paint,
       Offset.zero,
     );

packages/flutter/test/widgets/editable_text_cursor_test.dart

@@ -287,12 +287,7 @@ void main() {
     await tester.pump(const Duration(milliseconds: 500));
     expect(renderEditable.cursorColor!.alpha, 0);
     expect(renderEditable, paintsExactlyCountTimes(#drawRect, 0));
-  },
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 5},
-  ));
+  });
 
   testWidgetsWithLeakTracking('Cursor does not animates when debugDeterministicCursor is set', (WidgetTester tester) async {
     EditableText.debugDeterministicCursor = true;
@@ -332,11 +327,7 @@ void main() {
     EditableText.debugDeterministicCursor = false;
   },
   variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }),
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 6},
-  ));
+  );
 
   testWidgetsWithLeakTracking('Cursor does not animate on Android when debugDeterministicCursor is set', (WidgetTester tester) async {
     final Color defaultCursorColor = Color(ThemeData.fallback().colorScheme.primary.value);
@@ -375,12 +366,7 @@ void main() {
     expect(renderEditable, paints..rect(color: defaultCursorColor));
 
     EditableText.debugDeterministicCursor = false;
-  },
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 4},
-  ));
+  });
 
   testWidgetsWithLeakTracking('Cursor animation restarts when it is moved using keys on desktop', (WidgetTester tester) async {
     debugDefaultTargetPlatformOverride = TargetPlatform.macOS;
@@ -460,11 +446,7 @@ void main() {
     debugDefaultTargetPlatformOverride = null;
   },
   variant: KeySimulatorTransitModeVariant.all(),
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 18},
-  ));
+  );
 
   testWidgetsWithLeakTracking('Cursor does not show when showCursor set to false', (WidgetTester tester) async {
     const Widget widget = MaterialApp(
@@ -492,12 +474,7 @@ void main() {
 
     await tester.pump(const Duration(milliseconds: 200));
     expect(renderEditable, paintsExactlyCountTimes(#drawRect, 0));
-  },
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 3},
-  ));
+  });
 
   testWidgetsWithLeakTracking('Cursor does not show when not focused', (WidgetTester tester) async {
     // Regression test for https://github.com/flutter/flutter/issues/106512 .
@@ -527,12 +504,7 @@ void main() {
     await tester.pump();
     await tester.pump(const Duration(milliseconds: 100));
     expect(renderEditable, isNot(paintsExactlyCountTimes(#drawRect, 0)));
-  },
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 2},
-  ));
+  });
 
   testWidgetsWithLeakTracking('Cursor radius is 2.0', (WidgetTester tester) async {
     const Widget widget = MaterialApp(
@@ -1031,11 +1003,7 @@ void main() {
     debugDefaultTargetPlatformOverride = null;
   },
   variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS,  TargetPlatform.macOS }),
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 4},
-  ));
+  );
 
   testWidgetsWithLeakTracking('cursor layout', (WidgetTester tester) async {
     EditableText.debugDeterministicCursor = true;
@@ -1287,11 +1255,7 @@ void main() {
     );
   },
   skip: isBrowser && !isCanvasKit, // https://github.com/flutter/flutter/issues/56308
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 1},
-  ));
+  );
 
   testWidgetsWithLeakTracking('getLocalRectForCaret reports the real caret Rect', (WidgetTester tester) async {
     EditableText.debugDeterministicCursor = true;
@@ -1337,9 +1301,5 @@ void main() {
     }
   },
   variant: TargetPlatformVariant.all(),
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 792},
-  ));
+  );
 }

packages/flutter/test/widgets/editable_text_test.dart

@@ -3780,11 +3780,6 @@ void main() {
 
       verifyAutocorrectionRectVisibility(expectVisible: false);
     },
-    leakTrackingTestConfig: const LeakTrackingTestConfig(
-      // TODO(ksokolovskyi): remove after fixing
-      // https://github.com/flutter/flutter/issues/134386
-      notDisposedAllowList: <String, int?> {'LeaderLayer': 5},
-    ),
   );
 
   testWidgetsWithLeakTracking('Changing controller updates EditableText', (WidgetTester tester) async {
@@ -12699,12 +12694,7 @@ void main() {
     ));
 
     EditableText.debugDeterministicCursor = false;
-  },
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 2},
-  ));
+  });
 
   testWidgetsWithLeakTracking('Floating cursor ending with selection', (WidgetTester tester) async {
     EditableText.debugDeterministicCursor = true;
@@ -12884,12 +12874,7 @@ void main() {
     lastSelectionChangedCause = null;
 
     EditableText.debugDeterministicCursor = false;
-  },
-  leakTrackingTestConfig: const LeakTrackingTestConfig(
-    // TODO(ksokolovskyi): remove after fixing
-    // https://github.com/flutter/flutter/issues/134386
-    notDisposedAllowList: <String, int?> {'LeaderLayer': 8},
-  ));
+  });
 
   group('Selection changed scroll into view', () {
     final String text = List<int>.generate(64, (int index) => index).join('\n');