Add enable suggestions

packages/fleather/lib/src/widgets/editor.dart

@@ -160,6 +160,15 @@ class FleatherEditor extends StatefulWidget {
   /// Defaults to `true`.
   final bool autocorrect;
 
+  /// Whether to show input suggestions as the user types.
+  ///
+  /// This flag only affects Android. On iOS, suggestions are tied directly to
+  /// [autocorrect], so that suggestions are only shown when [autocorrect] is
+  /// true. On Android autocorrection and suggestion are controlled separately.
+  ///
+  /// Defaults to true.
+  final bool enableSuggestions;
+
   /// Whether to enable user interface affordances for changing the
   /// text selection.
   ///
@@ -289,6 +298,7 @@ class FleatherEditor extends StatefulWidget {
     this.showCursor = true,
     this.readOnly = false,
     this.autocorrect = true,
+    this.enableSuggestions = true,
     this.enableInteractiveSelection = true,
     this.minHeight,
     this.maxHeight,
@@ -460,6 +470,7 @@ class _FleatherEditorState extends State<FleatherEditor>
       autocorrect: widget.autocorrect,
       showCursor: widget.showCursor,
       readOnly: widget.readOnly,
+      enableSuggestions: widget.enableSuggestions,
       enableInteractiveSelection: widget.enableInteractiveSelection,
       minHeight: widget.minHeight,
       maxHeight: widget.maxHeight,
@@ -559,6 +570,7 @@ class RawEditor extends StatefulWidget {
     bool? showCursor,
     this.readOnly = false,
     this.autocorrect = true,
+    this.enableSuggestions = true,
     this.enableInteractiveSelection = true,
     this.minHeight,
     this.maxHeight,
@@ -615,6 +627,15 @@ class RawEditor extends StatefulWidget {
   /// Defaults to `true`.
   final bool autocorrect;
 
+  /// Whether to show input suggestions as the user types.
+  ///
+  /// This flag only affects Android. On iOS, suggestions are tied directly to
+  /// [autocorrect], so that suggestions are only shown when [autocorrect] is
+  /// true. On Android autocorrection and suggestion are controlled separately.
+  ///
+  /// Defaults to true.
+  final bool enableSuggestions;
+
   /// Callback which is triggered when the user wants to open a URL from
   /// a link in the document.
   final ValueChanged<String?>? onLaunchUrl;
@@ -1405,6 +1426,13 @@ class RawEditorState extends EditorState
     } else {
       if (oldWidget.readOnly && _hasFocus) {
         openConnectionIfNeeded();
+      } else if (oldWidget.autocorrect != widget.autocorrect ||
+          oldWidget.enableSuggestions != widget.enableSuggestions ||
+          oldWidget.keyboardAppearance != widget.keyboardAppearance ||
+          oldWidget.textCapitalization != widget.textCapitalization ||
+          oldWidget.enableInteractiveSelection !=
+              widget.enableInteractiveSelection) {
+        updateConnectionConfig();
       }
     }
   }

packages/fleather/lib/src/widgets/editor_input_client_mixin.dart

@@ -51,26 +51,33 @@ mixin RawEditorStateTextInputClientMixin on EditorState
 
     if (!hasConnection) {
       _lastKnownRemoteTextEditingValue = textEditingValue;
-      _textInputConnection = TextInput.attach(
-        this,
-        TextInputConfiguration(
-          inputType: TextInputType.multiline,
-          readOnly: widget.readOnly,
-          obscureText: false,
-          autocorrect: widget.autocorrect,
-          enableDeltaModel: true,
-          inputAction: TextInputAction.newline,
-          keyboardAppearance: widget.keyboardAppearance,
-          textCapitalization: widget.textCapitalization,
-        ),
-      );
+      _textInputConnection = TextInput.attach(this, _configuration);
 
       _updateSizeAndTransform();
       _textInputConnection!.setEditingState(_lastKnownRemoteTextEditingValue!);
     }
     _textInputConnection!.show();
   }
 
+  void updateConnectionConfig() {
+    if (hasConnection) {
+      _textInputConnection!.updateConfig(_configuration);
+    }
+  }
+
+  TextInputConfiguration get _configuration => TextInputConfiguration(
+        inputType: TextInputType.multiline,
+        readOnly: widget.readOnly,
+        obscureText: false,
+        enableDeltaModel: true,
+        autocorrect: widget.autocorrect,
+        enableSuggestions: widget.enableSuggestions,
+        inputAction: TextInputAction.newline,
+        enableInteractiveSelection: widget.enableInteractiveSelection,
+        keyboardAppearance: widget.keyboardAppearance,
+        textCapitalization: widget.textCapitalization,
+      );
+
   /// Closes input connection if it's currently open. Otherwise does nothing.
   void closeConnectionIfNeeded() {
     if (hasConnection) {

packages/fleather/lib/src/widgets/field.dart

@@ -70,6 +70,15 @@ class FleatherField extends StatefulWidget {
   /// Defaults to `true`.
   final bool autocorrect;
 
+  /// Whether to show input suggestions as the user types.
+  ///
+  /// This flag only affects Android. On iOS, suggestions are tied directly to
+  /// [autocorrect], so that suggestions are only shown when [autocorrect] is
+  /// true. On Android autocorrection and suggestion are controlled separately.
+  ///
+  /// Defaults to true.
+  final bool enableSuggestions;
+
   /// Whether to enable user interface affordances for changing the
   /// text selection.
   ///
@@ -181,6 +190,7 @@ class FleatherField extends StatefulWidget {
     this.showCursor = true,
     this.readOnly = false,
     this.autocorrect = true,
+    this.enableSuggestions = true,
     this.enableInteractiveSelection = true,
     this.minHeight,
     this.maxHeight,
@@ -252,6 +262,7 @@ class _FleatherFieldState extends State<FleatherField> {
       showCursor: widget.showCursor,
       readOnly: widget.readOnly,
       autocorrect: widget.autocorrect,
+      enableSuggestions: widget.enableSuggestions,
       enableInteractiveSelection: widget.enableInteractiveSelection,
       minHeight: widget.minHeight,
       maxHeight: widget.maxHeight,

packages/fleather/test/widgets/editor_input_client_mixin_test.dart

@@ -299,28 +299,50 @@ void main() {
     });
   });
 
-  group('send editor options to TextInputConnection', () {
-    testWidgets('send autocorrect option', (tester) async {
-      Map<String, dynamic>? textInputClientProperties;
-      tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
-          SystemChannels.textInput, (MethodCall methodCall) async {
-        if (methodCall.method == 'TextInput.setClient') {
-          textInputClientProperties = methodCall.arguments[1];
-        }
-        return null;
-      });
+  testWidgets('send editor options to TextInputConnection', (tester) async {
+    Map<String, dynamic>? textInputSetClientProperties;
+    Map<String, dynamic>? textInputUpdateConfigProperties;
+    tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+        SystemChannels.textInput, (MethodCall methodCall) async {
+      if (methodCall.method == 'TextInput.setClient') {
+        textInputSetClientProperties = methodCall.arguments[1];
+      } else if (methodCall.method == 'TextInput.updateConfig') {
+        textInputUpdateConfigProperties = methodCall.arguments;
+      }
+      return null;
+    });
 
-      final editor =
-          EditorSandBox(tester: tester, document: ParchmentDocument());
-      await editor.pump();
-      await editor.tap();
+    final controller = FleatherController();
+    Future<void> pumpEditor(bool enable) async {
+      final editor = MaterialApp(
+          home: FleatherField(
+        controller: controller,
+        enableSuggestions: enable,
+        autocorrect: enable,
+      ));
+      await tester.pumpWidget(editor);
+      await tester.tapAt(tester.getCenter(find.byType(RawEditor)));
       tester.binding.scheduleWarmUpFrame();
       await tester.pumpAndSettle();
+    }
 
-      expect(
-        textInputClientProperties?['autocorrect'],
-        true,
-      );
-    });
+    await pumpEditor(true);
+    expect(textInputSetClientProperties?['autocorrect'], true);
+    expect(textInputSetClientProperties?['enableSuggestions'], true);
+    expect(textInputUpdateConfigProperties, isNull);
+
+    await tester.pumpWidget(const SizedBox());
+    await tester.pumpAndSettle();
+
+    await pumpEditor(false);
+    expect(textInputSetClientProperties?['autocorrect'], false);
+    expect(textInputSetClientProperties?['enableSuggestions'], false);
+    expect(textInputUpdateConfigProperties, isNull);
+
+    textInputSetClientProperties = null;
+    await pumpEditor(true);
+    expect(textInputUpdateConfigProperties?['autocorrect'], true);
+    expect(textInputUpdateConfigProperties?['enableSuggestions'], true);
+    expect(textInputSetClientProperties, isNull);
   });
 }