chore: add date cell handler

Author: appflowy

frontend/app_flowy/lib/workspace/application/grid/cell/cell_service.dart

@@ -344,7 +344,7 @@ class CellService {
       ..gridId = gridId
       ..fieldId = fieldId
       ..rowId = rowId
-      ..data = data;
+      ..cellContentChangeset = data;
     return GridEventUpdateCell(payload).send();
   }
 

frontend/app_flowy/lib/workspace/application/grid/cell/date_cal_bloc.dart

@@ -51,7 +51,9 @@ class DateCalBloc extends Bloc<DateCalEvent, DateCalState> {
           setTimeFormat: (_TimeFormat value) async {
             await _updateTypeOption(emit, timeFormat: value.timeFormat);
           },
-          setTime: (_Time value) {},
+          setTime: (_Time value) {
+            //
+          },
         );
       },
     );

frontend/app_flowy/lib/workspace/application/grid/cell/select_option_service.dart

@@ -60,27 +60,18 @@ class SelectOptionService {
   Future<Either<Unit, FlowyError>> update({
     required SelectOption option,
   }) {
-    final cellIdentifier = CellIdentifierPayload.create()
-      ..gridId = gridId
-      ..fieldId = fieldId
-      ..rowId = rowId;
     final payload = SelectOptionChangesetPayload.create()
       ..updateOption = option
-      ..cellIdentifier = cellIdentifier;
+      ..cellIdentifier = _cellIdentifier();
     return GridEventUpdateSelectOption(payload).send();
   }
 
   Future<Either<Unit, FlowyError>> delete({
     required SelectOption option,
   }) {
-    final cellIdentifier = CellIdentifierPayload.create()
-      ..gridId = gridId
-      ..fieldId = fieldId
-      ..rowId = rowId;
-
     final payload = SelectOptionChangesetPayload.create()
       ..deleteOption = option
-      ..cellIdentifier = cellIdentifier;
+      ..cellIdentifier = _cellIdentifier();
 
     return GridEventUpdateSelectOption(payload).send();
   }
@@ -96,19 +87,22 @@ class SelectOptionService {
 
   Future<Either<void, FlowyError>> select({required String optionId}) {
     final payload = SelectOptionCellChangesetPayload.create()
-      ..gridId = gridId
-      ..fieldId = fieldId
-      ..rowId = rowId
+      ..cellIdentifier = _cellIdentifier()
       ..insertOptionId = optionId;
-    return GridEventUpdateCellSelectOption(payload).send();
+    return GridEventUpdateSelectOptionCell(payload).send();
   }
 
   Future<Either<void, FlowyError>> unSelect({required String optionId}) {
     final payload = SelectOptionCellChangesetPayload.create()
+      ..cellIdentifier = _cellIdentifier()
+      ..deleteOptionId = optionId;
+    return GridEventUpdateSelectOptionCell(payload).send();
+  }
+
+  CellIdentifierPayload _cellIdentifier() {
+    return CellIdentifierPayload.create()
       ..gridId = gridId
       ..fieldId = fieldId
-      ..rowId = rowId
-      ..deleteOptionId = optionId;
-    return GridEventUpdateCellSelectOption(payload).send();
+      ..rowId = rowId;
   }
 }

frontend/app_flowy/lib/workspace/presentation/plugins/grid/src/widgets/cell/date_cell/calendar.dart

@@ -309,6 +309,7 @@ class _CalDateTimeSetting extends StatefulWidget {
       identifier: _CalDateTimeSetting.identifier(),
       anchorContext: context,
       anchorDirection: AnchorDirection.rightWithCenterAligned,
+      anchorOffset: const Offset(20, 0),
     );
   }
 }
@@ -369,7 +370,7 @@ class _CalDateTimeSettingState extends State<_CalDateTimeSetting> {
       anchorContext: context,
       anchorDirection: AnchorDirection.rightWithCenterAligned,
       style: FlowyOverlayStyle(blur: false),
-      anchorOffset: const Offset(-20, 0),
+      anchorOffset: const Offset(20, 0),
     );
   }
 }

frontend/app_flowy/packages/flowy_sdk/lib/dispatch/dart_event/flowy-grid/dart_event.dart

@@ -358,13 +358,30 @@ class GridEventUpdateCell {
     }
 }
 
-class GridEventUpdateCellSelectOption {
+class GridEventUpdateSelectOptionCell {
      SelectOptionCellChangesetPayload request;
-     GridEventUpdateCellSelectOption(this.request);
+     GridEventUpdateSelectOptionCell(this.request);
 
     Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
-          ..event = GridEvent.UpdateCellSelectOption.toString()
+          ..event = GridEvent.UpdateSelectOptionCell.toString()
+          ..payload = requestToBytes(this.request);
+
+    return Dispatch.asyncRequest(request)
+        .then((bytesResult) => bytesResult.fold(
+           (bytes) => left(unit),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
+        ));
+    }
+}
+
+class GridEventUpdateDateCell {
+     DateChangesetPayload request;
+     GridEventUpdateDateCell(this.request);
+
+    Future<Either<Unit, FlowyError>> send() {
+    final request = FFIRequest.create()
+          ..event = GridEvent.UpdateDateCell.toString()
           ..payload = requestToBytes(this.request);
 
     return Dispatch.asyncRequest(request)