Implement shift + click selection

rsconcept/frontend/src/components/ui/DataTable/DataTable.tsx

@@ -100,6 +100,7 @@ function DataTable<TData extends RowData>({
   ...restProps
 }: DataTableProps<TData>) {
   const [sorting, setSorting] = useState<SortingState>(initialSorting ? [initialSorting] : []);
+  const [lastSelected, setLastSelected] = useState<string | undefined>(undefined);
 
   const [pagination, setPagination] = useState<PaginationState>({
     pageIndex: 0,
@@ -147,6 +148,7 @@ function DataTable<TData extends RowData>({
             enableRowSelection={enableRowSelection}
             enableSorting={enableSorting}
             headPosition={headPosition}
+            setLastSelected={setLastSelected}
           />
         ) : null}
 
@@ -155,6 +157,8 @@ function DataTable<TData extends RowData>({
           dense={dense}
           conditionalRowStyles={conditionalRowStyles}
           enableRowSelection={enableRowSelection}
+          lastSelected={lastSelected}
+          setLastSelected={setLastSelected}
           onRowClicked={onRowClicked}
           onRowDoubleClicked={onRowDoubleClicked}
         />

rsconcept/frontend/src/components/ui/DataTable/SelectAll.tsx

@@ -4,9 +4,15 @@ import CheckboxTristate from '@/components/ui/CheckboxTristate';
 
 interface SelectAllProps<TData> {
   table: Table<TData>;
+  setLastSelected: React.Dispatch<React.SetStateAction<string | undefined>>;
 }
 
-function SelectAll<TData>({ table }: SelectAllProps<TData>) {
+function SelectAll<TData>({ table, setLastSelected }: SelectAllProps<TData>) {
+  function handleChange(value: boolean | null) {
+    setLastSelected(undefined);
+    table.toggleAllPageRowsSelected(value !== false);
+  }
+
   return (
     <CheckboxTristate
       tabIndex={-1}
@@ -14,7 +20,7 @@ function SelectAll<TData>({ table }: SelectAllProps<TData>) {
       value={
         !table.getIsAllPageRowsSelected() && table.getIsSomePageRowsSelected() ? null : table.getIsAllPageRowsSelected()
       }
-      setValue={value => table.toggleAllPageRowsSelected(value !== false)}
+      setValue={handleChange}
     />
   );
 }

rsconcept/frontend/src/components/ui/DataTable/SelectRow.tsx

@@ -4,10 +4,16 @@ import Checkbox from '@/components/ui/Checkbox';
 
 interface SelectRowProps<TData> {
   row: Row<TData>;
+  setLastSelected: React.Dispatch<React.SetStateAction<string | undefined>>;
 }
 
-function SelectRow<TData>({ row }: SelectRowProps<TData>) {
-  return <Checkbox tabIndex={-1} value={row.getIsSelected()} setValue={row.getToggleSelectedHandler()} />;
+function SelectRow<TData>({ row, setLastSelected }: SelectRowProps<TData>) {
+  function handleChange(value: boolean) {
+    setLastSelected(row.id);
+    row.toggleSelected(value);
+  }
+
+  return <Checkbox tabIndex={-1} value={row.getIsSelected()} setValue={handleChange} />;
 }
 
 export default SelectRow;

rsconcept/frontend/src/components/ui/DataTable/TableBody.tsx

@@ -8,6 +8,10 @@ interface TableBodyProps<TData> {
   dense?: boolean;
   enableRowSelection?: boolean;
   conditionalRowStyles?: IConditionalStyle<TData>[];
+
+  lastSelected: string | undefined;
+  setLastSelected: React.Dispatch<React.SetStateAction<string | undefined>>;
+
   onRowClicked?: (rowData: TData, event: React.MouseEvent<Element, MouseEvent>) => void;
   onRowDoubleClicked?: (rowData: TData, event: React.MouseEvent<Element, MouseEvent>) => void;
 }
@@ -17,15 +21,34 @@ function TableBody<TData>({
   dense,
   enableRowSelection,
   conditionalRowStyles,
+  lastSelected,
+  setLastSelected,
   onRowClicked,
   onRowDoubleClicked
 }: TableBodyProps<TData>) {
-  function handleRowClicked(row: Row<TData>, event: React.MouseEvent<Element, MouseEvent>) {
+  function handleRowClicked(target: Row<TData>, event: React.MouseEvent<Element, MouseEvent>) {
     if (onRowClicked) {
-      onRowClicked(row.original, event);
+      onRowClicked(target.original, event);
+    }
+    if (enableRowSelection && target.getCanSelect()) {
+      if (event.shiftKey && !!lastSelected && lastSelected !== target.id) {
+        const { rows, rowsById } = table.getRowModel();
+        const lastIndex = rowsById[lastSelected].index;
+        const currentIndex = target.index;
+        const toggleRows = rows.slice(
+          lastIndex > currentIndex ? currentIndex : lastIndex + 1,
+          lastIndex > currentIndex ? lastIndex : currentIndex + 1
+        );
+        const newSelection: { [key: string]: boolean } = {};
+        toggleRows.forEach(row => {
+          newSelection[row.id] = !target.getIsSelected();
+        });
+        table.setRowSelection(prev => ({ ...prev, ...newSelection }));
+        setLastSelected(undefined);
+      } else {
+        setLastSelected(target.id);
+        target.toggleSelected(!target.getIsSelected());
       }
-    if (enableRowSelection && row.getCanSelect()) {
-      row.getToggleSelectedHandler()(!row.getIsSelected());
     }
   }
 
@@ -53,7 +76,7 @@ function TableBody<TData>({
         >
           {enableRowSelection ? (
             <td key={`select-${row.id}`} className='pl-3 pr-1 align-middle border-y'>
-              <SelectRow row={row} />
+              <SelectRow row={row} setLastSelected={setLastSelected} />
             </td>
           ) : null}
           {row.getVisibleCells().map((cell: Cell<TData, unknown>) => (

rsconcept/frontend/src/components/ui/DataTable/TableHeader.tsx

@@ -8,9 +8,16 @@ interface TableHeaderProps<TData> {
   headPosition?: string;
   enableRowSelection?: boolean;
   enableSorting?: boolean;
+  setLastSelected: React.Dispatch<React.SetStateAction<string | undefined>>;
 }
 
-function TableHeader<TData>({ table, headPosition, enableRowSelection, enableSorting }: TableHeaderProps<TData>) {
+function TableHeader<TData>({
+  table,
+  headPosition,
+  enableRowSelection,
+  enableSorting,
+  setLastSelected
+}: TableHeaderProps<TData>) {
   return (
     <thead
       className='clr-app shadow-border'
@@ -23,7 +30,7 @@ function TableHeader<TData>({ table, headPosition, enableRowSelection, enableSor
         <tr key={headerGroup.id}>
           {enableRowSelection ? (
             <th className='pl-3 pr-1 align-middle'>
-              <SelectAll table={table} />
+              <SelectAll table={table} setLastSelected={setLastSelected} />
             </th>
           ) : null}
           {headerGroup.headers.map((header: Header<TData, unknown>) => (

rsconcept/frontend/src/pages/RSFormPage/EditorRSList/EditorRSList.tsx

@@ -3,8 +3,8 @@
 import clsx from 'clsx';
 import { useLayoutEffect, useMemo, useState } from 'react';
 
-import { type RowSelectionState } from '@/components/ui/DataTable';
 import SelectedCounter from '@/components/info/SelectedCounter';
+import { type RowSelectionState } from '@/components/ui/DataTable';
 import { useConceptTheme } from '@/context/ThemeContext';
 import { ConstituentaID, CstType } from '@/models/rsform';