feat : update excel

components/admin/extra-sheet-editor.tsx

@@ -6,18 +6,48 @@ import {
   ArrowRightIcon,
   ArrowUpIcon,
   Columns3Icon,
+  GripHorizontalIcon,
+  GripVerticalIcon,
   PlusIcon,
   PencilIcon,
   PaletteIcon,
+  Redo2Icon,
   Rows3Icon,
   Trash2Icon,
+  Undo2Icon,
 } from "lucide-react";
-import Spreadsheet, { type ColumnIndicatorProps, type DataEditorProps, type Point } from "react-spreadsheet";
+import Spreadsheet, {
-import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+  type ColumnIndicatorProps,
+  type DataEditorProps,
+  type Point,
+  type RowIndicatorProps,
+  type SpreadsheetRef,
+} from "react-spreadsheet";
+import { useCallback, useEffect, useMemo, useRef, useState, type KeyboardEvent } from "react";
+import {
+  closestCenter,
+  DndContext,
+  KeyboardSensor,
+  PointerSensor,
+  useSensor,
+  useSensors,
+  type CollisionDetection,
+  type DragEndEvent,
+} from "@dnd-kit/core";
+import {
+  horizontalListSortingStrategy,
+  rectSortingStrategy,
+  sortableKeyboardCoordinates,
+  SortableContext,
+  useSortable,
+  verticalListSortingStrategy,
+} from "@dnd-kit/sortable";
+import { CSS } from "@dnd-kit/utilities";
 
 import { DeleteConfirmationDialog } from "@/components/admin/delete-confirmation-dialog";
 import { RichTextContent } from "@/components/rich-text-content";
 import { RichTextEditor } from "@/components/rich-text-editor";
+import { SimpleTooltip } from "@/components/tooltip";
 import { Button } from "@/components/ui/button";
 import {
   Dialog,
@@ -38,6 +68,7 @@ import {
 } from "@/components/ui/dropdown-menu";
 import { Field, FieldGroup, FieldLabel } from "@/components/ui/field";
 import { Input } from "@/components/ui/input";
+import { Kbd } from "@/components/ui/kbd";
 import {
   addExtraSheetColumn,
   addExtraSheetRow,
@@ -48,15 +79,47 @@ import {
   moveExtraSheetColumn,
   moveExtraSheetRow,
   nextExtraSheetColumnLabel,
+  styleExtraSheetCells,
   updateExtraSheetCell,
   updateExtraSheetCells,
   type ExtraSheet,
   type ExtraSheetMatrix,
 } from "@/lib/guides/extra-sheet";
-import { normalizeExtraRichText } from "@/lib/rich-text";
+import {
+  normalizeExtraRichText,
+  richTextContentSignature,
+  type RichTextStylePatch,
+} from "@/lib/rich-text";
+import { cn } from "@/lib/utils";
 
 type DeleteTarget = "column" | "row" | null;
+interface SheetHistory {
+  items: ExtraSheet[];
+  index: number;
+  value: ExtraSheet;
+}
+
 const DEFAULT_CELL_BACKGROUND = "#16A34A";
+const SHEET_HISTORY_LIMIT = 80;
+const columnDragId = (id: string) => `column:${id}`;
+const rowDragId = (id: string) => `row:${id}`;
+
+const sameAxisCollision: CollisionDetection = (args) => {
+  const axis = String(args.active.id).split(":", 1)[0];
+  return closestCenter({
+    ...args,
+    droppableContainers: args.droppableContainers.filter(
+      (container) => String(container.id).startsWith(`${axis}:`),
+    ),
+  });
+};
+
+function movedIndex(current: number, from: number, to: number): number {
+  if (current === from) return to;
+  if (from < to && current > from && current <= to) return current - 1;
+  if (to < from && current >= to && current < from) return current + 1;
+  return current;
+}
 
 function LiteralDataViewer({ cell }: { cell?: { value?: unknown; backgroundColor?: string } }) {
   return (
@@ -86,18 +149,38 @@ function DialogDataEditor({
 }
 
 function EditableColumnIndicator({
+  id,
   column,
   label,
   selected,
   onRename,
-}: ColumnIndicatorProps & { onRename: (column: number) => void }) {
+}: ColumnIndicatorProps & { id: string; onRename: (column: number) => void }) {
+  const { attributes, listeners, setNodeRef, transform, transition, isDragging } = useSortable({
+    id,
+    strategy: horizontalListSortingStrategy,
+  });
   return (
-    <th className={selected ? "Spreadsheet__header Spreadsheet__header--selected" : "Spreadsheet__header"}>
+    <th
+      ref={setNodeRef}
+      className={cn("Spreadsheet__header", selected && "Spreadsheet__header--selected", isDragging && "opacity-60")}
+      style={{ transform: CSS.Transform.toString(transform), transition }}
+    >
+      <Button
+        type="button"
+        variant="ghost"
+        size="icon-sm"
+        className="touch-none"
+        aria-label={`ลากเพื่อย้าย ${String(label ?? `คอลัมน์ ${column + 1}`)}`}
+        {...attributes}
+        {...listeners}
+      >
+        <GripHorizontalIcon />
+      </Button>
       <Button
         type="button"
         variant="ghost"
         size="sm"
-        className="w-full"
+        className="min-w-0 flex-1"
         onClick={() => onRename(column)}
       >
         {label}
@@ -106,6 +189,41 @@ function EditableColumnIndicator({
   );
 }
 
+function SortableRowIndicator({ id, row, label, selected, onSelect }: RowIndicatorProps & { id: string }) {
+  const { attributes, listeners, setNodeRef, transform, transition, isDragging } = useSortable({
+    id,
+    strategy: verticalListSortingStrategy,
+  });
+  return (
+    <th
+      ref={setNodeRef}
+      className={cn("Spreadsheet__header", selected && "Spreadsheet__header--selected", isDragging && "opacity-60")}
+      style={{ transform: CSS.Transform.toString(transform), transition }}
+    >
+      <Button
+        type="button"
+        variant="ghost"
+        size="icon-sm"
+        className="touch-none"
+        aria-label={`ลากเพื่อย้ายแถว ${row + 1}`}
+        {...attributes}
+        {...listeners}
+      >
+        <GripVerticalIcon />
+      </Button>
+      <Button
+        type="button"
+        variant="ghost"
+        size="sm"
+        className="min-w-0 flex-1"
+        onClick={(event) => onSelect(row, event.shiftKey)}
+      >
+        {label ?? row + 1}
+      </Button>
+    </th>
+  );
+}
+
 export function ExtraSheetEditor({
   value,
   createId,
@@ -117,6 +235,11 @@ export function ExtraSheetEditor({
   onChange: (value: ExtraSheet) => void;
   onRemove: () => void;
 }) {
+  const sensors = useSensors(
+    useSensor(PointerSensor),
+    useSensor(KeyboardSensor, { coordinateGetter: sortableKeyboardCoordinates }),
+  );
+  const spreadsheetRef = useRef<SpreadsheetRef>(null);
   const [active, setActive] = useState<Point>({ row: 0, column: 0 });
   const [labelDialogOpen, setLabelDialogOpen] = useState(false);
   const [renaming, setRenaming] = useState(false);
@@ -125,11 +248,107 @@ export function ExtraSheetEditor({
   const [removeOpen, setRemoveOpen] = useState(false);
   const [cellDialogOpen, setCellDialogOpen] = useState(false);
   const [cellDraft, setCellDraft] = useState("");
+  const [originalCellDraft, setOriginalCellDraft] = useState("");
+  const [stylePatch, setStylePatch] = useState<RichTextStylePatch>({});
   const [selectedCount, setSelectedCount] = useState(1);
+  const [history, setHistory] = useState<SheetHistory>({ items: [value], index: 0, value });
   const selectedPointsRef = useRef<Point[]>([active]);
   const matrix = useMemo(() => extraSheetToMatrix(value), [value]);
   const activeColumn = value.columns[active.column];
   const activeRow = value.rows[active.row];
+  const canUndo = history.index > 0;
+  const canRedo = history.index < history.items.length - 1;
+  const sortableIds = useMemo(() => [
+    ...value.columns.map((column) => columnDragId(column.id)),
+    ...value.rows.map((row) => rowDragId(row.id)),
+  ], [value.columns, value.rows]);
+
+  if (history.value !== value) {
+    setHistory(history.items[history.index] === value
+      ? { ...history, value }
+      : { items: [value], index: 0, value });
+  }
+
+  const commitSheet = useCallback((next: ExtraSheet) => {
+    if (JSON.stringify(next) === JSON.stringify(value)) return;
+    setHistory((current) => {
+      const items = [...current.items.slice(0, current.index + 1), next]
+        .slice(-SHEET_HISTORY_LIMIT);
+      return { items, index: items.length - 1, value: next };
+    });
+    onChange(next);
+  }, [onChange, value]);
+
+  const travel = useCallback((direction: -1 | 1) => {
+    const index = history.index + direction;
+    const next = history.items[index];
+    if (!next) return;
+    setHistory((current) => ({ ...current, index, value: next }));
+    onChange(next);
+    const point = {
+      row: Math.min(active.row, next.rows.length - 1),
+      column: Math.min(active.column, next.columns.length - 1),
+    };
+    setActive(point);
+    selectedPointsRef.current = [point];
+    setSelectedCount(1);
+    window.requestAnimationFrame(() => spreadsheetRef.current?.activate(point));
+  }, [active, history, onChange]);
+
+  const activateOnly = useCallback((point: Point) => {
+    setActive(point);
+    selectedPointsRef.current = [point];
+    setSelectedCount(1);
+    window.requestAnimationFrame(() => spreadsheetRef.current?.activate(point));
+  }, []);
+
+  const moveRow = useCallback((from: number, to: number) => {
+    const next = moveExtraSheetRow(value, from, to);
+    if (next === value) return;
+    const point = { ...active, row: movedIndex(active.row, from, to) };
+    commitSheet(next);
+    activateOnly(point);
+  }, [active, activateOnly, commitSheet, value]);
+
+  const moveColumn = useCallback((from: number, to: number) => {
+    const next = moveExtraSheetColumn(value, from, to);
+    if (next === value) return;
+    const point = { ...active, column: movedIndex(active.column, from, to) };
+    commitSheet(next);
+    activateOnly(point);
+  }, [active, activateOnly, commitSheet, value]);
+
+  const handleDragEnd = useCallback(({ active: dragged, over }: DragEndEvent) => {
+    if (!over || dragged.id === over.id) return;
+    const draggedId = String(dragged.id);
+    const overId = String(over.id);
+    if (draggedId.startsWith("row:") && overId.startsWith("row:")) {
+      const from = value.rows.findIndex((row) => rowDragId(row.id) === draggedId);
+      const to = value.rows.findIndex((row) => rowDragId(row.id) === overId);
+      if (from !== -1 && to !== -1) moveRow(from, to);
+    }
+    if (draggedId.startsWith("column:") && overId.startsWith("column:")) {
+      const from = value.columns.findIndex((column) => columnDragId(column.id) === draggedId);
+      const to = value.columns.findIndex((column) => columnDragId(column.id) === overId);
+      if (from !== -1 && to !== -1) moveColumn(from, to);
+    }
+  }, [moveColumn, moveRow, value.columns, value.rows]);
+
+  const handleSheetKeyDown = (event: KeyboardEvent<HTMLDivElement>) => {
+    const target = event.target as HTMLElement;
+    if (target.closest("input, textarea, [contenteditable='true']")) return;
+    const key = event.key.toLowerCase();
+    const undo = (event.metaKey || event.ctrlKey) && !event.shiftKey && key === "z";
+    const redo = (event.metaKey || event.ctrlKey) && event.shiftKey && key === "z"
+      || event.ctrlKey && !event.shiftKey && key === "y";
+    if (undo && canUndo) {
+      event.preventDefault();
+      travel(-1);
+    } else if (redo && canRedo) {
+      event.preventDefault();
+      travel(1);
+    }
+  };
   const normalizedLabel = columnLabel.trim().toLocaleLowerCase();
   const labelInvalid = !normalizedLabel || value.columns.some((column, index) =>
     index !== (renaming ? active.column : -1) &&
@@ -151,7 +370,7 @@ export function ExtraSheetEditor({
   const saveColumnLabel = () => {
     if (labelInvalid) return;
     if (renaming) {
-      onChange({
+      commitSheet({
         ...value,
         columns: value.columns.map((column, index) =>
           index === active.column ? { ...column, label: columnLabel.trim() } : column,
@@ -159,12 +378,12 @@ export function ExtraSheetEditor({
       });
     } else {
       const column = value.columns.length;
-      onChange(addExtraSheetColumn(
+      commitSheet(addExtraSheetColumn(
         value,
         columnLabel.trim(),
         createId("extra-sheet-column"),
       ));
-      setActive((current) => ({ ...current, column }));
+      activateOnly({ ...active, column });
     }
     setLabelDialogOpen(false);
   };
@@ -175,27 +394,66 @@ export function ExtraSheetEditor({
     setCellDraft(normalizeExtraRichText(
       content ?? (column && row ? row.cells[column.id] ?? "" : ""),
     ));
+    setOriginalCellDraft(normalizeExtraRichText(
+      content ?? (column && row ? row.cells[column.id] ?? "" : ""),
+    ));
+    setStylePatch({});
     setCellDialogOpen(true);
   }, [value.columns, value.rows]);
   const openActiveCellEditor = () => openCellEditorAt(active);
   const columnIndicator = useCallback((props: ColumnIndicatorProps) => (
-    <EditableColumnIndicator {...props} onRename={openRenameColumn} />
+    <EditableColumnIndicator
-  ), [openRenameColumn]);
+      {...props}
+      id={columnDragId(value.columns[props.column].id)}
+      onRename={openRenameColumn}
+    />
+  ), [openRenameColumn, value.columns]);
+  const rowIndicator = useCallback((props: RowIndicatorProps) => (
+    <SortableRowIndicator {...props} id={rowDragId(value.rows[props.row].id)} />
+  ), [value.rows]);
   const dataEditor = useCallback((props: DataEditorProps<{ value: string }>) => (
     <DialogDataEditor {...props} onEdit={openCellEditorAt} />
   ), [openCellEditorAt]);
 
   return (
-    <div className="flex min-w-0 flex-col gap-3" aria-label="ตารางข้อมูลเสริม">
+    <div
+      className="flex min-w-0 flex-col gap-3"
+      aria-label="ตารางข้อมูลเสริม"
+      onKeyDown={handleSheetKeyDown}
+    >
       <div className="flex flex-wrap items-center gap-2">
+        <SimpleTooltip text={<>ย้อนกลับ <Kbd>Ctrl/⌘ Z</Kbd></>}>
+          <Button
+            type="button"
+            variant="ghost"
+            size="icon-sm"
+            disabled={!canUndo}
+            aria-label="ย้อนกลับการแก้ไขตาราง"
+            onClick={() => travel(-1)}
+          >
+            <Undo2Icon />
+          </Button>
+        </SimpleTooltip>
+        <SimpleTooltip text={<>ทำซ้ำ <Kbd>Ctrl/⌘ Shift Z</Kbd></>}>
+          <Button
+            type="button"
+            variant="ghost"
+            size="icon-sm"
+            disabled={!canRedo}
+            aria-label="ทำซ้ำการแก้ไขตาราง"
+            onClick={() => travel(1)}
+          >
+            <Redo2Icon />
+          </Button>
+        </SimpleTooltip>
         <Button
           type="button"
           variant="outline"
           size="sm"
           onClick={() => {
             const row = value.rows.length;
-            onChange(addExtraSheetRow(value, createId("extra-sheet-row")));
+            commitSheet(addExtraSheetRow(value, createId("extra-sheet-row")));
-            setActive((current) => ({ ...current, row }));
+            activateOnly({ ...active, row });
           }}
         >
           <PlusIcon data-icon="inline-start" />
@@ -220,7 +478,7 @@ export function ExtraSheetEditor({
             className="absolute inset-0 cursor-pointer opacity-0"
             value={activeRow?.backgrounds?.[activeColumn?.id ?? ""] ?? DEFAULT_CELL_BACKGROUND}
             onChange={(event) => {
-              onChange(updateExtraSheetCells(
+              commitSheet(updateExtraSheetCells(
                 value,
                 selectedPointsRef.current,
                 { backgroundColor: event.target.value },
@@ -232,7 +490,7 @@ export function ExtraSheetEditor({
           type="button"
           variant="ghost"
           size="sm"
-          onClick={() => onChange(updateExtraSheetCells(value, selectedPointsRef.current, { backgroundColor: null }))}
+          onClick={() => commitSheet(updateExtraSheetCells(value, selectedPointsRef.current, { backgroundColor: null }))}
         >
           ล้างสีพื้นหลัง
         </Button>
@@ -249,8 +507,7 @@ export function ExtraSheetEditor({
               <DropdownMenuItem
                 disabled={!activeRow || active.row === 0}
                 onClick={() => {
-                  onChange(moveExtraSheetRow(value, active.row, active.row - 1));
+                  moveRow(active.row, active.row - 1);
-                  setActive((current) => ({ ...current, row: current.row - 1 }));
                 }}
               >
                 <ArrowUpIcon />ย้ายขึ้น
@@ -258,8 +515,7 @@ export function ExtraSheetEditor({
               <DropdownMenuItem
                 disabled={!activeRow || active.row === value.rows.length - 1}
                 onClick={() => {
-                  onChange(moveExtraSheetRow(value, active.row, active.row + 1));
+                  moveRow(active.row, active.row + 1);
-                  setActive((current) => ({ ...current, row: current.row + 1 }));
                 }}
               >
                 <ArrowDownIcon />ย้ายลง
@@ -291,8 +547,7 @@ export function ExtraSheetEditor({
               <DropdownMenuItem
                 disabled={!activeColumn || active.column === 0}
                 onClick={() => {
-                  onChange(moveExtraSheetColumn(value, active.column, active.column - 1));
+                  moveColumn(active.column, active.column - 1);
-                  setActive((current) => ({ ...current, column: current.column - 1 }));
                 }}
               >
                 <ArrowLeftIcon />ย้ายไปทางซ้าย
@@ -300,8 +555,7 @@ export function ExtraSheetEditor({
               <DropdownMenuItem
                 disabled={!activeColumn || active.column === value.columns.length - 1}
                 onClick={() => {
-                  onChange(moveExtraSheetColumn(value, active.column, active.column + 1));
+                  moveColumn(active.column, active.column + 1);
-                  setActive((current) => ({ ...current, column: current.column + 1 }));
                 }}
               >
                 <ArrowRightIcon />ย้ายไปทางขวา
@@ -326,11 +580,19 @@ export function ExtraSheetEditor({
       </div>
 
       <div className="overflow-x-auto rounded-lg border">
+        <DndContext
+          sensors={sensors}
+          collisionDetection={sameAxisCollision}
+          onDragEnd={handleDragEnd}
+        >
+          <SortableContext items={sortableIds} strategy={rectSortingStrategy}>
             <Spreadsheet
+              ref={spreadsheetRef}
               className="extra-sheet-grid"
               data={matrix}
               columnLabels={value.columns.map((column) => column.label)}
               ColumnIndicator={columnIndicator}
+              RowIndicator={rowIndicator}
               DataViewer={LiteralDataViewer}
               DataEditor={dataEditor}
               onActivate={(point) => {
@@ -345,12 +607,14 @@ export function ExtraSheetEditor({
                   setSelectedCount(range.size());
                 }
               }}
-          onChange={(next) => onChange(matrixToExtraSheet(
+              onChange={(next) => commitSheet(matrixToExtraSheet(
                 value,
                 next as ExtraSheetMatrix,
                 createId,
               ))}
             />
+          </SortableContext>
+        </DndContext>
       </div>
 
       <Dialog open={cellDialogOpen} onOpenChange={setCellDialogOpen}>
@@ -359,16 +623,30 @@ export function ExtraSheetEditor({
             <DialogTitle>แก้ไขเซลล์</DialogTitle>
             <DialogDescription>
               {selectedCount > 1
-                ? `นำข้อความเดียวกันไปใช้กับ ${selectedCount} เซลล์ที่เลือก`
+                ? `การแก้ข้อความจะแทนที่ทั้ง ${selectedCount} เซลล์ แต่การเปลี่ยนรูปแบบจะเก็บข้อความเดิมของแต่ละเซลล์`
                 : `แถว ${active.row + 1} · ${activeColumn?.label ?? "คอลัมน์"}`}
             </DialogDescription>
           </DialogHeader>
-          <RichTextEditor value={cellDraft} onChange={setCellDraft} showBubbleMenu={false} />
+          <RichTextEditor
+            value={cellDraft}
+            onChange={setCellDraft}
+            showBubbleMenu={false}
+            formatWholeContent={selectedCount > 1}
+            onFormatChange={(patch) => setStylePatch((current) => ({ ...current, ...patch }))}
+          />
           <DialogFooter showCloseButton>
             <Button type="button" onClick={() => {
-              onChange(selectedCount > 1
+              const contentUnchanged = richTextContentSignature(cellDraft)
+                === richTextContentSignature(originalCellDraft);
+              if (selectedCount > 1 && contentUnchanged) {
+                if (Object.keys(stylePatch).length > 0) {
+                  commitSheet(styleExtraSheetCells(value, selectedPointsRef.current, stylePatch));
+                }
+              } else {
+                commitSheet(selectedCount > 1
                   ? updateExtraSheetCells(value, selectedPointsRef.current, { value: cellDraft })
                   : updateExtraSheetCell(value, active.row, active.column, cellDraft));
+              }
               setCellDialogOpen(false);
             }}>บันทึกเซลล์</Button>
           </DialogFooter>
@@ -412,11 +690,11 @@ export function ExtraSheetEditor({
         showSuccessToast={false}
         onConfirm={() => {
           if (deleteTarget === "column") {
-            onChange(deleteExtraSheetColumn(value, active.column));
+            commitSheet(deleteExtraSheetColumn(value, active.column));
-            setActive((current) => ({ ...current, column: Math.max(0, current.column - 1) }));
+            activateOnly({ ...active, column: Math.max(0, active.column - 1) });
           } else if (deleteTarget === "row") {
-            onChange(deleteExtraSheetRow(value, active.row));
+            commitSheet(deleteExtraSheetRow(value, active.row));
-            setActive((current) => ({ ...current, row: Math.max(0, current.row - 1) }));
+            activateOnly({ ...active, row: Math.max(0, active.row - 1) });
           }
           setDeleteTarget(null);
         }}

components/rich-text-editor.tsx

@@ -38,6 +38,7 @@ import { Input } from "@/components/ui/input";
 import { Separator } from "@/components/ui/separator";
 import { ToggleGroup, ToggleGroupItem } from "@/components/ui/toggle-group";
 import {
+  type RichTextStylePatch,
   sanitizeRichTextHtml,
   sanitizeRichTextUrl,
 } from "@/lib/rich-text";
@@ -50,6 +51,8 @@ export interface RichTextEditorProps {
   className?: string;
   invalid?: boolean;
   showBubbleMenu?: boolean;
+  formatWholeContent?: boolean;
+  onFormatChange?: (patch: RichTextStylePatch) => void;
 }
 
 type Format = "bold" | "italic" | "underline" | "strike";
@@ -62,20 +65,39 @@ function normalizedEditorHtml(editor: Editor): string {
 function FormatControls({
   editor,
   onLink,
+  formatWholeContent,
+  onFormatChange,
 }: {
   editor: Editor;
   onLink: () => void;
+  formatWholeContent: boolean;
+  onFormatChange?: (patch: RichTextStylePatch) => void;
 }) {
   const formats: Format[] = ["bold", "italic", "underline", "strike"];
   const active = formats.filter((format) => editor.isActive(format));
   const color = editor.getAttributes("textStyle").color ?? "#FF3B30";
 
   const toggleFormat = (format: Format) => {
+    if (formatWholeContent) editor.commands.selectAll();
+    const enabled = !editor.isActive(format);
     const chain = editor.chain().focus();
-    if (format === "bold") chain.toggleBold().run();
+    if (format === "bold") {
-    if (format === "italic") chain.toggleItalic().run();
+      if (enabled) chain.setBold().run();
-    if (format === "underline") chain.toggleUnderline().run();
+      else chain.unsetBold().run();
-    if (format === "strike") chain.toggleStrike().run();
+    }
+    if (format === "italic") {
+      if (enabled) chain.setItalic().run();
+      else chain.unsetItalic().run();
+    }
+    if (format === "underline") {
+      if (enabled) chain.setUnderline().run();
+      else chain.unsetUnderline().run();
+    }
+    if (format === "strike") {
+      if (enabled) chain.setStrike().run();
+      else chain.unsetStrike().run();
+    }
+    onFormatChange?.({ [format]: enabled });
   };
 
   return (
@@ -113,7 +135,11 @@ function FormatControls({
           type="color"
           value={color}
           className="absolute inset-0 cursor-pointer opacity-0"
-          onChange={(event) => editor.chain().focus().setColor(event.target.value).run()}
+          onChange={(event) => {
+            if (formatWholeContent) editor.commands.selectAll();
+            editor.chain().focus().setColor(event.target.value).run();
+            onFormatChange?.({ color: event.target.value });
+          }}
         />
       </label>
       <Button
@@ -122,7 +148,11 @@ function FormatControls({
         size="icon-sm"
         aria-label="ล้างสีข้อความ"
         title="ล้างสีข้อความ"
-        onClick={() => editor.chain().focus().unsetColor().run()}
+        onClick={() => {
+          if (formatWholeContent) editor.commands.selectAll();
+          editor.chain().focus().unsetColor().run();
+          onFormatChange?.({ color: null });
+        }}
       >
         <RemoveFormattingIcon />
       </Button>
@@ -147,6 +177,8 @@ export function RichTextEditor({
   className,
   invalid = false,
   showBubbleMenu = true,
+  formatWholeContent = false,
+  onFormatChange,
 }: RichTextEditorProps) {
   const [linkOpen, setLinkOpen] = useState(false);
   const [linkText, setLinkText] = useState("");
@@ -241,11 +273,21 @@ export function RichTextEditor({
         aria-invalid={invalid || undefined}
       >
         <div className="border-b bg-muted/50 p-1">
-          <FormatControls editor={editor} onLink={openLinkDialog} />
+          <FormatControls
+            editor={editor}
+            onLink={openLinkDialog}
+            formatWholeContent={formatWholeContent}
+            onFormatChange={onFormatChange}
+          />
         </div>
         {showBubbleMenu ? (
           <BubbleMenu editor={editor} className="rounded-lg border bg-popover p-1 shadow-md">
-            <FormatControls editor={editor} onLink={openLinkDialog} />
+            <FormatControls
+              editor={editor}
+              onLink={openLinkDialog}
+              formatWholeContent={formatWholeContent}
+              onFormatChange={onFormatChange}
+            />
           </BubbleMenu>
         ) : null}
         <EditorContent editor={editor} />

lib/guides/extra-sheet.test.ts

@@ -12,6 +12,7 @@ import {
   moveExtraSheetColumn,
   moveExtraSheetRow,
   normalizeExtraSheetRichText,
+  styleExtraSheetCells,
   updateExtraSheetCell,
   updateExtraSheetCells,
   type ExtraSheet,
@@ -124,6 +125,23 @@ describe("Extra sheet", () => {
       .rows[0].backgrounds).toEqual({});
   });
 
+  it("styles selected cells without replacing their individual text", () => {
+    const sheet = createExtraSheet(idFactory());
+    const firstColumn = sheet.columns[0].id;
+    const secondColumn = sheet.columns[1].id;
+    sheet.rows[0].cells[firstColumn] = "<p>Alpha</p>";
+    sheet.rows[1].cells[secondColumn] = "<p><em>Beta</em></p>";
+
+    const styled = styleExtraSheetCells(sheet, [
+      { row: 0, column: 0 },
+      { row: 1, column: 1 },
+    ], { bold: true });
+
+    expect(styled.rows[0].cells[firstColumn]).toBe("<p><strong>Alpha</strong></p>");
+    expect(styled.rows[1].cells[secondColumn]).toBe("<p><em><strong>Beta</strong></em></p>");
+    expect(styled.rows[0].cells[secondColumn]).toBe("");
+  });
+
   it("renders legacy sheets that do not have background metadata yet", () => {
     const sheet = createExtraSheet(idFactory());
     const legacy = {

lib/guides/extra-sheet.ts

@@ -1,6 +1,10 @@
 import * as z from "zod";
 
-import { normalizeExtraRichText } from "@/lib/rich-text";
+import {
+  applyRichTextStylePatch,
+  normalizeExtraRichText,
+  type RichTextStylePatch,
+} from "@/lib/rich-text";
 
 const extraSheetId = z.string().min(1).max(128);
 
@@ -213,6 +217,29 @@ export function updateExtraSheetCells(
   };
 }
 
+export function styleExtraSheetCells(
+  sheet: ExtraSheet,
+  points: Iterable<SheetPoint>,
+  patch: RichTextStylePatch,
+): ExtraSheet {
+  const selected = new Set(Array.from(points, ({ row, column }) => `${row}:${column}`));
+  return {
+    ...sheet,
+    rows: sheet.rows.map((row, rowIndex) => ({
+      ...row,
+      cells: Object.fromEntries(Object.entries(row.cells).map(([columnId, value]) => {
+        const columnIndex = sheet.columns.findIndex((column) => column.id === columnId);
+        return [
+          columnId,
+          selected.has(`${rowIndex}:${columnIndex}`)
+            ? applyRichTextStylePatch(value, patch)
+            : value,
+        ];
+      })),
+    })),
+  };
+}
+
 export function normalizeExtraSheetRichText(sheet: ExtraSheet): ExtraSheet {
   return {
     ...sheet,

lib/rich-text.test.ts

@@ -1,7 +1,9 @@
 import { describe, expect, it } from "vitest";
 
 import {
+  applyRichTextStylePatch,
   normalizeExtraRichText,
+  richTextContentSignature,
   sanitizeRichTextHtml,
   sanitizeRichTextUrl,
 } from "@/lib/rich-text";
@@ -46,3 +48,35 @@ describe("legacy Extra rich text conversion", () => {
     ])).toBe("<p><em>Ready</em></p>");
   });
 });
+
+describe("bulk rich-text styles", () => {
+  it("applies a style to every text node without replacing structure or links", () => {
+    expect(applyRichTextStylePatch(
+      '<p>First <a href="https://example.com">link</a></p><ul><li>Second</li></ul>',
+      { bold: true },
+    )).toBe(
+      '<p><strong>First </strong><a href="https://example.com" target="_blank" rel="noopener noreferrer"><strong>link</strong></a></p><ul><li><strong>Second</strong></li></ul>',
+    );
+  });
+
+  it("removes only requested styles and applies normalized colors", () => {
+    expect(applyRichTextStylePatch(
+      '<p><strong>Bold <em>and italic</em></strong></p>',
+      { bold: false },
+    )).toBe("<p>Bold <em>and italic</em></p>");
+    expect(applyRichTextStylePatch("<p>Red</p>", { color: "#00ff00" }))
+      .toBe('<p><span style="color: #00FF00">Red</span></p>');
+    expect(applyRichTextStylePatch(
+      '<p><span style="color: #00FF00">Green</span></p>',
+      { color: null },
+    )).toBe("<p>Green</p>");
+  });
+
+  it("compares content independently from visual formatting", () => {
+    expect(richTextContentSignature(
+      '<p><strong>Same</strong> <span style="color: #FF0000">text</span></p>',
+    )).toBe("<p>Same text</p>");
+    expect(richTextContentSignature("<p>Changed text</p>"))
+      .not.toBe(richTextContentSignature("<p>Original text</p>"));
+  });
+});

lib/rich-text.ts

@@ -24,6 +24,14 @@ const ATTRIBUTE = /([a-zA-Z_:][a-zA-Z0-9_:.-]*)\s*=\s*("[^"]*"|'[^']*'|[^\s"'=<>
 const HEX_COLOR = /^#[0-9a-fA-F]{6}$/;
 const RGB_COLOR = /^rgb\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)$/i;
 
+export interface RichTextStylePatch {
+  bold?: boolean;
+  italic?: boolean;
+  underline?: boolean;
+  strike?: boolean;
+  color?: string | null;
+}
+
 function normalizeRichTextColor(value: string): string | null {
   const color = value.trim();
   if (HEX_COLOR.test(color)) return color.toUpperCase();
@@ -120,3 +128,58 @@ export function normalizeExtraRichText(
 
   return content ? `<p>${content}</p>` : "";
 }
+
+const RICH_TEXT_MARK_TAGS = {
+  bold: "strong",
+  italic: "em",
+  underline: "u",
+  strike: "s",
+} as const;
+
+function removeRichTextTag(value: string, tag: string): string {
+  return value.replace(new RegExp(`</?${tag}(?:\\s[^>]*)?>`, "gi"), "");
+}
+
+function wrapRichTextNodes(value: string, tag: string, attributes = ""): string {
+  return value
+    .split(/(<[^>]+>)/g)
+    .map((part) => part && !part.startsWith("<")
+      ? `<${tag}${attributes}>${part}</${tag}>`
+      : part)
+    .join("");
+}
+
+/** Returns rich-text structure with visual marks removed for content comparisons. */
+export function richTextContentSignature(value: string): string {
+  let result = normalizeExtraRichText(value);
+  Object.values(RICH_TEXT_MARK_TAGS).forEach((tag) => {
+    result = removeRichTextTag(result, tag);
+  });
+  return removeRichTextTag(result, "span");
+}
+
+/** Applies uniform visual formatting without replacing a cell's own content. */
+export function applyRichTextStylePatch(
+  value: string,
+  patch: RichTextStylePatch,
+): string {
+  let result = normalizeExtraRichText(value);
+
+  (Object.entries(RICH_TEXT_MARK_TAGS) as Array<
+    [keyof Omit<RichTextStylePatch, "color">, string]
+  >).forEach(([format, tag]) => {
+    if (patch[format] === undefined) return;
+    result = removeRichTextTag(result, tag);
+    if (patch[format]) result = wrapRichTextNodes(result, tag);
+  });
+
+  if (patch.color !== undefined) {
+    result = removeRichTextTag(result, "span");
+    const color = patch.color ? normalizeRichTextColor(patch.color) : null;
+    if (color) {
+      result = wrapRichTextNodes(result, "span", ` style="color: ${color}"`);
+    }
+  }
+
+  return sanitizeRichTextHtml(result);
+}