Only modify NewTransferState by reduce_mut

src/components/plates/destination_plate.rs

@@ -1,6 +1,7 @@
 #![allow(non_snake_case)]
 use yew::prelude::*;
 use yewdux::prelude::*;
+use std::intrinsics::discriminant_value;
 use std::rc::Rc;
 
 use super::super::states::NewTransferState;
@@ -36,7 +37,6 @@ pub fn DestinationPlate(props: &DestinationPlateProps) -> Html {
     };
     let dispatch = Dispatch::<NewTransferState>::subscribe(menu_sync_callback);
 
-
     let mouse_callback = {
         let m_start_handle = m_start_handle.clone();
         let m_end_handle = m_end_handle.clone();
@@ -69,13 +69,9 @@ pub fn DestinationPlate(props: &DestinationPlateProps) -> Html {
             if let Some(ul) = *m_start_handle {
                 if let Some(br) = *m_end_handle {
                     if let Ok(rd) = RegionDisplay::try_from((ul.0, ul.1, br.0, br.1)) {
-                        dispatch.set(NewTransferState {
+                        dispatch.reduce_mut(|state| {
-                            source_id: current.source_id,
+                            state.destination_region = rd;
-                            destination_id: current.destination_id,
+                        });
-                            source_region: current.source_region.clone(),
-                            destination_region: rd,
-                            interleave_x: current.interleave_x,
-                            interleave_y: current.interleave_y })
                     }
                 }
             }

src/components/plates/source_plate.rs

@@ -64,18 +64,13 @@ pub fn SourcePlate(props: &SourcePlateProps) -> Html {
         let m_stat_handle = m_stat_handle.clone();
 
         Callback::from(move |_: MouseEvent| {
-        let current = dispatch.get();
         m_stat_handle.set(false);
         if let Some(ul) = *m_start_handle {
             if let Some(br) = *m_end_handle {
                 if let Ok(rd) = RegionDisplay::try_from((ul.0, ul.1, br.0, br.1)) {
-                    dispatch.set(NewTransferState {
+                    dispatch.reduce_mut(|state| {
-                        source_id: current.source_id,
+                        state.source_region = rd;
-                        destination_id: current.destination_id,
+                    });
-                        source_region: rd,
-                        destination_region: current.destination_region.clone(),
-                        interleave_x: current.interleave_x,
-                        interleave_y: current.interleave_y })
                 }
             }
         }

src/components/transfer_menu.rs

@@ -24,13 +24,8 @@ pub fn TransferMenu() -> Html {
             let input = target.and_then(|t| t.dyn_into::<HtmlInputElement>().ok());
             if let Some(input) = input {
                 if let Ok(rd) = RegionDisplay::try_from(input.value()) {
-                    dispatch.set( NewTransferState {
+                    dispatch.reduce_mut(|state| {
-                        source_id: state.source_id,
+                        state.source_region = rd;
-                        destination_id: state.destination_id,
-                        source_region: rd,
-                        destination_region: state.destination_region.clone(),
-                        interleave_x: state.interleave_x,
-                        interleave_y: state.interleave_y
                     });
                     input.set_custom_validity("");
                 } else {
@@ -49,13 +44,8 @@ pub fn TransferMenu() -> Html {
             let input = target.and_then(|t| t.dyn_into::<HtmlInputElement>().ok());
             if let Some(input) = input {
                 if let Ok(rd) = RegionDisplay::try_from(input.value()) {
-                    dispatch.set( NewTransferState {
+                    dispatch.reduce_mut(|state| {
-                        source_id: state.source_id,
+                        state.destination_region = rd;
-                        destination_id: state.destination_id,
-                        source_region: state.source_region.clone(),
-                        destination_region: rd,
-                        interleave_x: state.interleave_x,
-                        interleave_y: state.interleave_y
                     });
                     input.set_custom_validity("");
                 } else {