Make TextInputClient a mixin (#104291)
TextInputClient and DeltaTextInputClient are now mixins, which helps with breaking changes and future deltas work
diff --git a/packages/flutter/lib/src/services/text_input.dart b/packages/flutter/lib/src/services/text_input.dart
index 85a3244..52cc6a5 100644
--- a/packages/flutter/lib/src/services/text_input.dart
+++ b/packages/flutter/lib/src/services/text_input.dart
@@ -1086,11 +1086,7 @@
/// * [EditableText], a [TextInputClient] implementation.
/// * [DeltaTextInputClient], a [TextInputClient] extension that receives
/// granular information from the platform's text input.
-abstract class TextInputClient {
- /// Abstract const constructor. This constructor enables subclasses to provide
- /// const constructors so that they can be used in const expressions.
- const TextInputClient();
-
+mixin TextInputClient {
/// The current state of the [TextEditingValue] held by this client.
TextEditingValue? get currentTextEditingValue;
@@ -1225,7 +1221,7 @@
/// * [TextInputConfiguration], to opt-in to receive [TextEditingDelta]'s from
/// the platforms [TextInput] you must set [TextInputConfiguration.enableDeltaModel]
/// to true.
-abstract class DeltaTextInputClient extends TextInputClient {
+mixin DeltaTextInputClient implements TextInputClient {
/// Requests that this client update its editing state by applying the deltas
/// received from the engine.
///
diff --git a/packages/flutter/lib/src/widgets/editable_text.dart b/packages/flutter/lib/src/widgets/editable_text.dart
index 640a7c1..2d201a3 100644
--- a/packages/flutter/lib/src/widgets/editable_text.dart
+++ b/packages/flutter/lib/src/widgets/editable_text.dart
@@ -1676,7 +1676,7 @@
}
/// State for a [EditableText].
-class EditableTextState extends State<EditableText> with AutomaticKeepAliveClientMixin<EditableText>, WidgetsBindingObserver, TickerProviderStateMixin<EditableText>, TextSelectionDelegate implements TextInputClient, AutofillClient {
+class EditableTextState extends State<EditableText> with AutomaticKeepAliveClientMixin<EditableText>, WidgetsBindingObserver, TickerProviderStateMixin<EditableText>, TextSelectionDelegate, TextInputClient implements AutofillClient {
Timer? _cursorTimer;
AnimationController get _cursorBlinkOpacityController {
return _backingCursorBlinkOpacityController ??= AnimationController(
diff --git a/packages/flutter/test/services/text_input_test.dart b/packages/flutter/test/services/text_input_test.dart
index 3e53b67..426ca81 100644
--- a/packages/flutter/test/services/text_input_test.dart
+++ b/packages/flutter/test/services/text_input_test.dart
@@ -701,7 +701,7 @@
});
}
-class FakeTextInputClient implements TextInputClient {
+class FakeTextInputClient with TextInputClient {
FakeTextInputClient(this.currentTextEditingValue);
String latestMethodCall = '';
