1 files changed, 88 insertions, 0 deletions
diff --git a/packages/frontend/src/components/grid/cell.ts b/packages/frontend/src/components/grid/cell.ts
new file mode 100644
index 0000000000..71b7a3e3f1
--- /dev/null
+++ b/packages/frontend/src/components/grid/cell.ts
@@ -0,0 +1,88 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { ValidateViolation } from '@/components/grid/cell-validators.js';
+import { Size } from '@/components/grid/grid.js';
+import { GridColumn } from '@/components/grid/column.js';
+import { GridRow } from '@/components/grid/row.js';
+import { MenuItem } from '@/types/menu.js';
+import { GridContext } from '@/components/grid/grid-event.js';
+
+export type CellValue = string | boolean | number | undefined | null | Array<unknown> | NonNullable<unknown>;
+
+export type CellAddress = {
+	row: number;
+	col: number;
+}
+
+export const CELL_ADDRESS_NONE: CellAddress = {
+	row: -1,
+	col: -1,
+};
+
+export type GridCell = {
+	address: CellAddress;
+	value: CellValue;
+	column: GridColumn;
+	row: GridRow;
+	selected: boolean;
+	ranged: boolean;
+	contentSize: Size;
+	setting: GridCellSetting;
+	violation: ValidateViolation;
+}
+
+export type GridCellContextMenuFactory = (col: GridColumn, row: GridRow, value: CellValue, context: GridContext) => MenuItem[];
+
+export type GridCellSetting = {
+	contextMenuFactory?: GridCellContextMenuFactory;
+}
+
+export function createCell(
+	column: GridColumn,
+	row: GridRow,
+	value: CellValue,
+	setting: GridCellSetting,
+): GridCell {
+	const newValue = (row.using && column.setting.valueTransformer)
+		? column.setting.valueTransformer(row, column, value)
+		: value;
+
+	return {
+		address: { row: row.index, col: column.index },
+		value: newValue,
+		column,
+		row,
+		selected: false,
+		ranged: false,
+		contentSize: { width: 0, height: 0 },
+		violation: {
+			valid: true,
+			params: {
+				column,
+				row,
+				value,
+				allCells: [],
+			},
+			violations: [],
+		},
+		setting,
+	};
+}
+
+export function resetCell(cell: GridCell): void {
+	cell.selected = false;
+	cell.ranged = false;
+	cell.violation = {
+		valid: true,
+		params: {
+			column: cell.column,
+			row: cell.row,
+			value: cell.value,
+			allCells: [],
+		},
+		violations: [],
+	};
+}