Revert "[EditableText] honor the "brieflyShowPassword" system setting (#97769)" (#98089)

This reverts commit 63f48d1.

Author: godofredoc

packages/flutter/lib/src/widgets/editable_text.dart

@@ -1923,13 +1923,13 @@ class EditableTextState extends State<EditableText> with AutomaticKeepAliveClien
       hideToolbar();
       _currentPromptRectRange = null;
 
-      final bool revealObscuredInput = _hasInputConnection
-                                    && widget.obscureText
-                                    && WidgetsBinding.instance!.window.brieflyShowPassword
-                                    && value.text.length == _value.text.length + 1;
+      if (_hasInputConnection) {
+        if (widget.obscureText && value.text.length == _value.text.length + 1) {
+          _obscureShowCharTicksPending = _kObscureShowLatestCharCursorTicks;
+          _obscureLatestCharIndex = _value.selection.baseOffset;
+        }
+      }
 
-      _obscureShowCharTicksPending = revealObscuredInput ? _kObscureShowLatestCharCursorTicks : 0;
-      _obscureLatestCharIndex = revealObscuredInput ? _value.selection.baseOffset : null;
       _formatAndSetValue(value, SelectionChangedCause.keyboard);
     }
 
@@ -2621,9 +2621,7 @@ class EditableTextState extends State<EditableText> with AutomaticKeepAliveClien
 
     if (_obscureShowCharTicksPending > 0) {
       setState(() {
-        _obscureShowCharTicksPending = WidgetsBinding.instance!.window.brieflyShowPassword
-          ? _obscureShowCharTicksPending - 1
-          : 0;
+        _obscureShowCharTicksPending--;
       });
     }
   }
@@ -3247,13 +3245,11 @@ class EditableTextState extends State<EditableText> with AutomaticKeepAliveClien
       String text = _value.text;
       text = widget.obscuringCharacter * text.length;
       // Reveal the latest character in an obscured field only on mobile.
-      const Set<TargetPlatform> mobilePlatforms = <TargetPlatform> {
-        TargetPlatform.android, TargetPlatform.iOS, TargetPlatform.fuchsia,
-      };
-      final bool breiflyShowPassword = WidgetsBinding.instance!.window.brieflyShowPassword
-                                    && mobilePlatforms.contains(defaultTargetPlatform);
-      if (breiflyShowPassword) {
-        final int? o = _obscureShowCharTicksPending > 0 ? _obscureLatestCharIndex : null;
+      if (defaultTargetPlatform == TargetPlatform.android ||
+          defaultTargetPlatform == TargetPlatform.iOS ||
+          defaultTargetPlatform == TargetPlatform.fuchsia) {
+        final int? o =
+            _obscureShowCharTicksPending > 0 ? _obscureLatestCharIndex : null;
         if (o != null && o >= 0 && o < text.length)
           text = text.replaceRange(o, o + 1, _value.text.substring(o, o + 1));
       }

packages/flutter/test/widgets/editable_text_test.dart

@@ -3611,72 +3611,6 @@ void main() {
     expect((findRenderEditable(tester).text! as TextSpan).text, expectedValue);
   });
 
-  testWidgets('password briefly shows last character when entered on mobile', (WidgetTester tester) async {
-    final bool debugDeterministicCursor = EditableText.debugDeterministicCursor;
-    EditableText.debugDeterministicCursor = false;
-    addTearDown(() {
-      EditableText.debugDeterministicCursor = debugDeterministicCursor;
-    });
-
-    await tester.pumpWidget(MaterialApp(
-      home: EditableText(
-        backgroundCursorColor: Colors.grey,
-        controller: controller,
-        obscureText: true,
-        focusNode: focusNode,
-        style: textStyle,
-        cursorColor: cursorColor,
-      ),
-    ));
-
-    await tester.enterText(find.byType(EditableText), 'AA');
-    await tester.pump();
-    await tester.enterText(find.byType(EditableText), 'AAA');
-    await tester.pump();
-
-    expect((findRenderEditable(tester).text! as TextSpan).text, '••A');
-    await tester.pump(const Duration(milliseconds: 500));
-    await tester.pump(const Duration(milliseconds: 500));
-    await tester.pump(const Duration(milliseconds: 500));
-    expect((findRenderEditable(tester).text! as TextSpan).text, '•••');
-  });
-
-  testWidgets('password briefly does not show last character on Android if turned off', (WidgetTester tester) async {
-    final bool debugDeterministicCursor = EditableText.debugDeterministicCursor;
-    EditableText.debugDeterministicCursor = false;
-    addTearDown(() {
-      EditableText.debugDeterministicCursor = debugDeterministicCursor;
-    });
-
-    await tester.pumpWidget(MaterialApp(
-      home: EditableText(
-        backgroundCursorColor: Colors.grey,
-        controller: controller,
-        obscureText: true,
-        focusNode: focusNode,
-        style: textStyle,
-        cursorColor: cursorColor,
-      ),
-    ));
-
-    await tester.enterText(find.byType(EditableText), 'AA');
-    await tester.pump();
-    await tester.enterText(find.byType(EditableText), 'AAA');
-    await tester.pump();
-
-    tester.binding.window.brieflyShowPasswordTestValue = false;
-    addTearDown(() {
-      tester.binding.window.brieflyShowPasswordTestValue = true;
-    });
-    expect((findRenderEditable(tester).text! as TextSpan).text, '••A');
-    await tester.pump(const Duration(milliseconds: 500));
-    expect((findRenderEditable(tester).text! as TextSpan).text, '•••');
-    await tester.pump(const Duration(milliseconds: 500));
-    await tester.pump(const Duration(milliseconds: 500));
-    await tester.pump(const Duration(milliseconds: 500));
-    expect((findRenderEditable(tester).text! as TextSpan).text, '•••');
-  });
-
   group('a11y copy/cut/paste', () {
     Future<void> _buildApp(MockTextSelectionControls controls, WidgetTester tester) {
       return tester.pumpWidget(MaterialApp(

packages/flutter_test/lib/src/window.dart

@@ -271,15 +271,6 @@ class TestWindow implements ui.SingletonFlutterWindow {
     platformDispatcher.onTextScaleFactorChanged = callback;
   }
 
-  @override
-  bool get brieflyShowPassword => _brieflyShowPasswordTestValue ?? platformDispatcher.brieflyShowPassword;
-  bool? _brieflyShowPasswordTestValue;
-  /// Hides the real [brieflyShowPassword] and reports the given
-  /// `brieflyShowPasswordTestValue` instead.
-  set brieflyShowPasswordTestValue(bool brieflyShowPasswordTestValue) { // ignore: avoid_setters_without_getters
-    _brieflyShowPasswordTestValue = brieflyShowPasswordTestValue;
-  }
-
   @override
   ui.FrameCallback? get onBeginFrame => platformDispatcher.onBeginFrame;
   @override

packages/flutter_test/test/window_test.dart

@@ -127,18 +127,6 @@ void main() {
     );
   });
 
-  testWidgets('TestWindow can fake brieflyShowPassword', (WidgetTester tester) async {
-    verifyThatTestWindowCanFakeProperty<bool>(
-      tester: tester,
-      realValue: ui.window.brieflyShowPassword,
-      fakeValue: !ui.window.brieflyShowPassword,
-      propertyRetriever: () => WidgetsBinding.instance!.window.brieflyShowPassword,
-      propertyFaker: (TestWidgetsFlutterBinding binding, bool fakeValue) {
-        binding.window.brieflyShowPasswordTestValue = fakeValue;
-      },
-    );
-  });
-
   testWidgets('TestWindow can fake default route name', (WidgetTester tester) async {
     verifyThatTestWindowCanFakeProperty<String>(
       tester: tester,