feat(editor): support pasting Excel data into database block (#9618)

close: BS-2338

tests/affine-local/e2e/blocksuite/database/utils.ts

@@ -0,0 +1,80 @@
+import {
+  addDatabase,
+  clickNewPageButton,
+} from '@affine-test/kit/utils/page-logic';
+import type { Page } from '@playwright/test';
+import { expect } from '@playwright/test';
+
+/**
+ * Create a new database block in the current page
+ */
+export async function createDatabaseBlock(page: Page) {
+  await clickNewPageButton(page);
+  await page.waitForTimeout(500);
+  await page.keyboard.press('Enter');
+  await addDatabase(page);
+}
+
+/**
+ * Initialize a database with specified number of rows
+ */
+export async function initDatabaseWithRows(page: Page, rowCount: number) {
+  await createDatabaseBlock(page);
+  for (let i = 0; i < rowCount; i++) {
+    await addDatabaseRow(page);
+  }
+}
+
+/**
+ * Add a new row to the database
+ */
+export async function addDatabaseRow(page: Page) {
+  const addButton = page.locator('.data-view-table-group-add-row');
+  await addButton.waitFor();
+  await addButton.click();
+}
+
+/**
+ * Simulate pasting Excel data into database
+ * @param page Playwright page object
+ * @param data Tab-separated text data with newlines for rows
+ */
+export async function pasteExcelData(page: Page, data: string) {
+  await page.evaluate(data => {
+    const clipboardData = new DataTransfer();
+    clipboardData.setData('text/plain', data);
+    const pasteEvent = new ClipboardEvent('paste', {
+      clipboardData,
+      bubbles: true,
+      cancelable: true,
+    });
+    document.activeElement?.dispatchEvent(pasteEvent);
+  }, data);
+}
+
+/**
+ * Select the first cell in the database
+ */
+export async function selectFirstCell(page: Page) {
+  const firstCell = page.locator('affine-database-cell-container').first();
+  await firstCell.waitFor();
+  await firstCell.click();
+}
+
+/**
+ * Verify the contents of multiple cells in sequence
+ * @param page Playwright page object
+ * @param expectedContents Array of expected cell contents in order
+ */
+export async function verifyCellContents(
+  page: Page,
+  expectedContents: string[]
+) {
+  const cells = page.locator('affine-database-cell-container');
+  for (let i = 0; i < expectedContents.length; i++) {
+    const cell = cells.nth(i);
+    await expect(cell.locator('uni-lit > *:first-child')).toHaveText(
+      expectedContents[i]
+    );
+  }
+}