1 files changed, 110 insertions, 0 deletions
diff --git a/packages/frontend/src/components/grid/cell-validators.ts b/packages/frontend/src/components/grid/cell-validators.ts
new file mode 100644
index 0000000000..949cab2ec6
--- /dev/null
+++ b/packages/frontend/src/components/grid/cell-validators.ts
@@ -0,0 +1,110 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { CellValue, GridCell } from '@/components/grid/cell.js';
+import { GridColumn } from '@/components/grid/column.js';
+import { GridRow } from '@/components/grid/row.js';
+import { i18n } from '@/i18n.js';
+
+export type ValidatorParams = {
+	column: GridColumn;
+	row: GridRow;
+	value: CellValue;
+	allCells: GridCell[];
+};
+
+export type ValidatorResult = {
+	valid: boolean;
+	message?: string;
+}
+
+export type GridCellValidator = {
+	name?: string;
+	ignoreViolation?: boolean;
+	validate: (params: ValidatorParams) => ValidatorResult;
+}
+
+export type ValidateViolation = {
+	valid: boolean;
+	params: ValidatorParams;
+	violations: ValidateViolationItem[];
+}
+
+export type ValidateViolationItem = {
+	valid: boolean;
+	validator: GridCellValidator;
+	result: ValidatorResult;
+}
+
+export function cellValidation(allCells: GridCell[], cell: GridCell, newValue: CellValue): ValidateViolation {
+	const { column, row } = cell;
+	const validators = column.setting.validators ?? [];
+
+	const params: ValidatorParams = {
+		column,
+		row,
+		value: newValue,
+		allCells,
+	};
+
+	const violations: ValidateViolationItem[] = validators.map(validator => {
+		const result = validator.validate(params);
+		return {
+			valid: result.valid,
+			validator,
+			result,
+		};
+	});
+
+	return {
+		valid: violations.every(v => v.result.valid),
+		params,
+		violations,
+	};
+}
+
+class ValidatorPreset {
+	required(): GridCellValidator {
+		return {
+			name: 'required',
+			validate: ({ value }): ValidatorResult => {
+				return {
+					valid: value !== null && value !== undefined && value !== '',
+					message: i18n.ts._gridComponent._error.requiredValue,
+				};
+			},
+		};
+	}
+
+	regex(pattern: RegExp): GridCellValidator {
+		return {
+			name: 'regex',
+			validate: ({ value }): ValidatorResult => {
+				return {
+					valid: (typeof value !== 'string') || pattern.test(value.toString() ?? ''),
+					message: i18n.tsx._gridComponent._error.patternNotMatch({ pattern: pattern.source }),
+				};
+			},
+		};
+	}
+
+	unique(): GridCellValidator {
+		return {
+			name: 'unique',
+			validate: ({ column, row, value, allCells }): ValidatorResult => {
+				const bindTo = column.setting.bindTo;
+				const isUnique = allCells
+					.filter(it => it.column.setting.bindTo === bindTo && it.row.index !== row.index)
+					.every(cell => cell.value !== value);
+				return {
+					valid: isUnique,
+					message: i18n.ts._gridComponent._error.notUnique,
+				};
+			},
+		};
+	}
+}
+
+export const validators = new ValidatorPreset();