fix: press enter to create or select option in text field

frontend/app_flowy/lib/plugins/grid/application/cell/select_option_editor_bloc.dart

@@ -54,6 +54,9 @@ class SelectOptionCellEditorBloc
           selectOption: (_SelectOption value) {
             _onSelectOption(value.optionId);
           },
+          trySelectOption: (_TrySelectOption value) {
+            _trySelectOption(value.optionName, emit);
+          },
           filterOption: (_SelectOptionFilter value) {
             _filterOption(value.optionName, emit);
           },
@@ -100,6 +103,36 @@ class SelectOptionCellEditorBloc
     }
   }
 
+  void _trySelectOption(
+      String optionName, Emitter<SelectOptionEditorState> emit) async {
+    SelectOptionPB? matchingOption;
+    bool optionExistsButSelected = false;
+
+    for (final option in state.options) {
+      if (option.name.toLowerCase() == optionName.toLowerCase()) {
+        if (!state.selectedOptions.contains(option)) {
+          matchingOption = option;
+          break;
+        } else {
+          optionExistsButSelected = true;
+        }
+      }
+    }
+
+    // if there isn't a matching option at all, then create it
+    if (matchingOption == null && !optionExistsButSelected) {
+      _createOption(optionName);
+    }
+
+    // if there is an unselected matching option, select it
+    if (matchingOption != null) {
+      _selectOptionService.select(optionId: matchingOption.id);
+    }
+
+    // clear the filter
+    emit(state.copyWith(filter: none()));
+  }
+
   void _filterOption(String optionName, Emitter<SelectOptionEditorState> emit) {
     final _MakeOptionResult result =
         _makeOptions(Some(optionName), state.allOptions);
@@ -187,6 +220,8 @@ class SelectOptionEditorEvent with _$SelectOptionEditorEvent {
       _DeleteOption;
   const factory SelectOptionEditorEvent.filterOption(String optionName) =
       _SelectOptionFilter;
+  const factory SelectOptionEditorEvent.trySelectOption(String optionName) =
+      _TrySelectOption;
 }
 
 @freezed

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/select_option_cell/select_option_editor.dart

@@ -154,10 +154,10 @@ class _TextField extends StatelessWidget {
                   .read<SelectOptionCellEditorBloc>()
                   .add(SelectOptionEditorEvent.filterOption(text));
             },
-            onNewTag: (tagName) {
+            onSubmitted: (tagName) {
               context
                   .read<SelectOptionCellEditorBloc>()
-                  .add(SelectOptionEditorEvent.newOption(tagName));
+                  .add(SelectOptionEditorEvent.trySelectOption(tagName));
             },
           ),
         );

frontend/app_flowy/lib/plugins/grid/presentation/widgets/cell/select_option_cell/text_field.dart

@@ -17,7 +17,7 @@ class SelectOptionTextField extends StatefulWidget {
   final LinkedHashMap<String, SelectOptionPB> selectedOptionMap;
   final double distanceToText;
 
-  final Function(String) onNewTag;
+  final Function(String) onSubmitted;
   final Function(String) newText;
   final VoidCallback? onClick;
 
@@ -26,7 +26,7 @@ class SelectOptionTextField extends StatefulWidget {
     required this.selectedOptionMap,
     required this.distanceToText,
     required this.tagController,
-    required this.onNewTag,
+    required this.onSubmitted,
     required this.newText,
     this.onClick,
     TextEditingController? textController,
@@ -88,7 +88,7 @@ class _SelectOptionTextFieldState extends State<SelectOptionTextField> {
               }
 
               if (text.isNotEmpty) {
-                widget.onNewTag(text);
+                widget.onSubmitted(text);
                 focusNode.requestFocus();
               }
             },