add back shift+enter for newline

lib/widgets/composer/composer.dart

@@ -1,5 +1,6 @@
 import "package:fast_immutable_collections/fast_immutable_collections.dart";
 import "package:flutter/material.dart";
+import "package:flutter/services.dart";
 import "package:flutter_hooks/flutter_hooks.dart";
 import "package:fluttertagger/fluttertagger.dart";
 import "package:hooks_riverpod/hooks_riverpod.dart";
@@ -135,7 +136,23 @@ class Composer extends HookConsumerWidget {
                               query.value = newQuery;
                             },
                             triggerCharacterAndStyles: {"@": style, "#": style},
-                            builder: (context, key) => TextField(
+                            builder: (context, key) => Focus(
+                              onKeyEvent: (_, event) {
+                                if (event is KeyDownEvent &&
+                                    event.logicalKey ==
+                                        LogicalKeyboardKey.enter) {
+                                  final shiftPressed =
+                                      HardwareKeyboard.instance.isShiftPressed;
+
+                                  if (!shiftPressed) {
+                                    send();
+                                    return KeyEventResult.handled;
+                                  }
+                                }
+
+                                return KeyEventResult.ignored;
+                              },
+                              child: TextField(
                                 maxLines: 12,
                                 minLines: 1,
                                 autofocus: true,
@@ -145,14 +162,11 @@ class Composer extends HookConsumerWidget {
                                 ),
                                 controller: controller.value,
                                 key: key,
-                              onSubmitted: (_) => send(),
-                              // Don't defocus on submit
-                              onEditingComplete: () {},
-                              textInputAction: .done,
                                 focusNode: node,
                               ),
                             ),
                           ),
+                        ),
                         IconButton(
                           onPressed: send,
                           icon: Icon(Icons.send),