history controller fix for example code

veilid-flutter/example/lib/app.dart

@@ -6,7 +6,7 @@ import 'package:flutter/material.dart';
 import 'package:loggy/loggy.dart';
 import 'package:veilid/veilid.dart';
 
-import 'history_wrapper.dart';
+import 'history_text_editing_controller.dart';
 import 'log.dart';
 import 'log_terminal.dart';
 import 'veilid_theme.dart';
@@ -24,13 +24,13 @@ class _MyAppState extends State<MyApp> with UiLoggy {
   bool _startedUp = false;
   Stream<VeilidUpdate>? _updateStream;
   Future<void>? _updateProcessor;
-  final _debugHistoryWrapper = HistoryWrapper();
+  late final HistoryTextEditingController _historyController;
   String? _errorText;
 
   @override
   void initState() {
     super.initState();
-
+    _historyController = HistoryTextEditingController(setState: setState);
     unawaited(initPlatformState());
   }
 
@@ -177,10 +177,10 @@ class _MyAppState extends State<MyApp> with UiLoggy {
           padding: const EdgeInsets.all(5),
           child: Row(children: [
             Expanded(
-                child: pad(_debugHistoryWrapper.wrap(
+                child: pad(
-              setState,
               TextField(
-                  controller: _debugHistoryWrapper.controller,
+                  controller: _historyController.controller,
+                  focusNode: _historyController.focusNode,
                   decoration: newInputDecoration(
                       'Debug Command', _errorText, _startedUp),
                   textInputAction: TextInputAction.unspecified,
@@ -197,16 +197,14 @@ class _MyAppState extends State<MyApp> with UiLoggy {
                       }
                       final res = await Veilid.instance.debug(v);
                       loggy.info(res);
-                      setState(() {
+                      _historyController.submit(v);
-                        _debugHistoryWrapper.submit(v);
-                      });
                     } on VeilidAPIException catch (e) {
                       setState(() {
                         _errorText = e.toDisplayError();
                       });
                     }
                   }),
-            ))),
+            )),
             pad(
               Column(children: [
                 const Text('Startup'),

veilid-flutter/example/lib/history_wrapper.dart

@@ -1,66 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
-
-// TextField History Wrapper
-class HistoryWrapper {
-  final List<String> _history = [];
-  int _historyPosition = 0;
-  final _historyTextEditingController = TextEditingController();
-  String _historyCurrentEdit = '';
-
-  TextEditingController get controller => _historyTextEditingController;
-
-  void submit(String v) {
-    // add to history
-    if (_history.isEmpty || _history.last != v) {
-      _history.add(v);
-      if (_history.length > 100) {
-        _history.removeAt(0);
-      }
-    }
-    _historyPosition = _history.length;
-    _historyTextEditingController.text = '';
-  }
-
-  Widget wrap(
-      void Function(void Function())? stateSetter, TextField textField) {
-    final setState = stateSetter ?? (x) => x();
-    return KeyboardListener(
-      onKeyEvent: (event) {
-        setState(() {
-          if (event.runtimeType == KeyDownEvent &&
-              event.logicalKey == LogicalKeyboardKey.arrowUp) {
-            if (_historyPosition > 0) {
-              if (_historyPosition == _history.length) {
-                _historyCurrentEdit = _historyTextEditingController.text;
-              }
-              _historyPosition -= 1;
-              _historyTextEditingController.text = _history[_historyPosition];
-            }
-          } else if (event.runtimeType == KeyDownEvent &&
-              event.logicalKey == LogicalKeyboardKey.arrowDown) {
-            if (_historyPosition < _history.length) {
-              _historyPosition += 1;
-              if (_historyPosition == _history.length) {
-                _historyTextEditingController.text = _historyCurrentEdit;
-              } else {
-                _historyTextEditingController.text = _history[_historyPosition];
-              }
-            }
-          } else if (event.runtimeType == KeyDownEvent) {
-            _historyPosition = _history.length;
-            _historyCurrentEdit = _historyTextEditingController.text;
-          }
-        });
-      },
-      focusNode: FocusNode(onKeyEvent: (node, event) {
-        if (event.logicalKey == LogicalKeyboardKey.arrowDown ||
-            event.logicalKey == LogicalKeyboardKey.arrowUp) {
-          return KeyEventResult.handled;
-        }
-        return KeyEventResult.ignored;
-      }),
-      child: textField,
-    );
-  }
-}