Adds Text Direction functionality to the TextField (#23609)

* added textDirection to TextField

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

@@ -106,6 +106,7 @@ class TextField extends StatefulWidget {
     this.textCapitalization = TextCapitalization.none,
     this.style,
     this.textAlign = TextAlign.start,
+    this.textDirection,
     this.autofocus = false,
     this.obscureText = false,
     this.autocorrect = true,
@@ -176,6 +177,9 @@ class TextField extends StatefulWidget {
   /// {@macro flutter.widgets.editableText.textAlign}
   final TextAlign textAlign;
 
+  /// {@macro flutter.widgets.editableText.textDirection}
+  final TextDirection textDirection;
+
   /// {@macro flutter.widgets.editableText.autofocus}
   final bool autofocus;
 
@@ -508,6 +512,7 @@ class _TextFieldState extends State<TextField> with AutomaticKeepAliveClientMixi
         textCapitalization: widget.textCapitalization,
         style: style,
         textAlign: widget.textAlign,
+        textDirection: widget.textDirection,
         autofocus: widget.autofocus,
         obscureText: widget.obscureText,
         autocorrect: widget.autocorrect,

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

@@ -58,6 +58,7 @@ class TextFormField extends FormField<String> {
     TextCapitalization textCapitalization = TextCapitalization.none,
     TextInputAction textInputAction,
     TextStyle style,
+    TextDirection textDirection,
     TextAlign textAlign = TextAlign.start,
     bool autofocus = false,
     bool obscureText = false,
@@ -105,6 +106,7 @@ class TextFormField extends FormField<String> {
         textInputAction: textInputAction,
         style: style,
         textAlign: textAlign,
+        textDirection: textDirection,
         textCapitalization: textCapitalization,
         autofocus: autofocus,
         obscureText: obscureText,

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

@@ -269,6 +269,7 @@ class EditableText extends StatefulWidget {
   /// {@endtemplate}
   final TextAlign textAlign;
 
+  /// {@template flutter.widgets.editableText.textDirection}
   /// The directionality of the text.
   ///
   /// This decides how [textAlign] values like [TextAlign.start] and
@@ -282,6 +283,7 @@ class EditableText extends StatefulWidget {
   /// its left.
   ///
   /// Defaults to the ambient [Directionality], if any.
+  /// {@endtemplate}
   final TextDirection textDirection;
 
   /// {@template flutter.widgets.editableText.textCapitalization}

packages/flutter/test/material/text_field_test.dart

@@ -2928,6 +2928,48 @@ void main() {
     expect(focusNode.hasFocus, isFalse);
   });
 
+  testWidgets('TextField displays text with text direction', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Material(
+          child: TextField(
+            textDirection: TextDirection.rtl,
+          ),
+        ),
+      ),
+    );
+
+    RenderEditable editable = findRenderEditable(tester);
+
+    await tester.enterText(find.byType(TextField), '0123456789101112');
+    await tester.pumpAndSettle();
+    Offset topLeft = editable.localToGlobal(
+      editable.getLocalRectForCaret(const TextPosition(offset: 10)).topLeft,
+    );
+
+    expect(topLeft.dx, equals(701.0));
+
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Material(
+          child: TextField(
+            textDirection: TextDirection.ltr,
+          ),
+        ),
+      ),
+    );
+
+    editable = findRenderEditable(tester);
+
+    await tester.enterText(find.byType(TextField), '0123456789101112');
+    await tester.pumpAndSettle();
+    topLeft = editable.localToGlobal(
+      editable.getLocalRectForCaret(const TextPosition(offset: 10)).topLeft,
+    );
+
+    expect(topLeft.dx, equals(160.0));
+  });
+
   testWidgets('TextField semantics', (WidgetTester tester) async {
     final SemanticsTester semantics = SemanticsTester(tester);
     final TextEditingController controller = TextEditingController();