objectstack-ai
diff --git a/‎.changeset/11562-detail-textarea-multiline.md‎
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diff --git a/‎packages/plugin-detail/src/InlineFieldInput.tsx‎
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diff --git a/‎packages/plugin-detail/src/__tests__/InlineFieldInput.delegation.test.tsx‎
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diff --git a/‎packages/plugin-detail/src/__tests__/InlineFieldInput.textareaEditor-11562.test.tsx‎
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@@ -0,0 +1,21 @@
+---
+'@object-ui/plugin-detail': patch
+---
+
+`record:details` edit mode edits a `textarea` field in a multi-line textarea,
+so saving it keeps its line breaks (objectui#11562).
+
+Before, a `textarea` row on the record page edited in a one-line text input.
+The browser strips line breaks from the value such an input is given, so a
+stored note with blank lines or a trailing newline was shown flattened, and one
+keystroke made the flattened text the value the Save wrote. Nothing warned.
+
+The detail row now routes `textarea` to `TextAreaField`, the fields package's
+multi-line widget: the one a `textarea` field already edits with in the record
+form and in a data-grid cell, and the one a `markdown` row got in
+objectui#11541. It hands the text back exactly as typed, blank lines and
+trailing newline included. A single-line value saves the same as before.
+
+Unchanged: `text`, `email`, `phone` and `url` rows still edit in the one-line
+input, and a data-grid cell still edits `textarea` with the same widget it used
+before.
@@ -75,21 +75,18 @@ export const INLINE_PLAIN_TEXT_INPUT_TESTID = 'inline-plain-text-input';
  * only its degenerate options-less SINGLE-value form reaches the terminal
  * input — see {@link usesInlinePlainTextInput}.
  *
- * `markdown` is absent although its value is a string (objectui#11541): it is
- * ROUTED, to the multi-line `TextAreaField`, because this terminal input is a
- * single-line `<input type="text">` and the browser strips line breaks from the
- * value it is seeded with — one keystroke and the flattened text is what gets
- * written. `html` / `richtext` are absent because the hosts never open an
- * editor for them at all (they are in the fields package's shared exclusion,
- * consulted since #4228).
- *
- * ⚠️ That line-break loss holds for `textarea`, which IS a member, whenever its
- * stored value spans lines. Recorded here so the "nothing is lost" above is not
- * read as covering it; objectui#11541 does not change `textarea`.
+ * `markdown` (objectui#11541) and `textarea` (objectui#11562) are absent
+ * although their values are strings: they are multi-line by type, so they are
+ * ROUTED, to the multi-line `TextAreaField`. This terminal input is a
+ * single-line `<input type="text">`, and the browser strips line breaks from
+ * the value it is seeded with — one keystroke and the flattened text is what
+ * gets written. The members left here are single-line types, which is what
+ * makes "nothing is lost" true of them. `html` / `richtext` are absent because
+ * the hosts never open an editor for them at all (they are in the fields
+ * package's shared exclusion, consulted since #4228).
  */
 export const INLINE_PLAIN_TEXT_FIELD_TYPES = new Set<string>([
   'text',
-  'textarea',
   'email',
   'phone',
   'url',
@@ -145,6 +142,10 @@ export const INLINE_ROUTED_FIELD_TYPES = new Set<string>([
   // Long-form markup source — the same exemption (objectui#11541): a row can
   // host a multi-line editor, and the terminal input is one line.
   'markdown',
+  // Multi-line plain text (objectui#11562). Not in the shared exclusion, so
+  // the hosts always opened an editor for it; it was class D until the
+  // terminal input's one line was measured to drop its line breaks.
+  'textarea',
 ]);
 
 /**
@@ -412,16 +413,18 @@ export const InlineFieldInput: React.FC<InlineFieldInputProps> = ({
   if (editType === 'file' || editType === 'video' || editType === 'audio') {
     return <FileField field={field as any} value={value} onChange={(v: any) => onChange(v)} error={error} />;
   }
-  // Markdown → `TextAreaField`, the fields package's multi-line widget, the one
-  // a `textarea` field edits with in the record form and in a grid cell
-  // (objectui#11541). The value is the markdown SOURCE, a plain string, and the
-  // textarea hands it back exactly as typed, blank lines and trailing newline
-  // included. The terminal input below cannot: it is one line, and the browser
-  // strips line breaks from the value it is seeded with — "a one-line text box
-  // is lossy", the reason #4228 recorded for keeping markdown out of this row.
-  // `html` / `richtext` never reach this component: the hosts' gate still
-  // excludes them.
-  if (editType === 'markdown') {
+  // Markdown and textarea → `TextAreaField`, the fields package's multi-line
+  // widget, the one a `textarea` field edits with in the record form and in a
+  // grid cell (objectui#11541 for markdown, objectui#11562 for textarea). The
+  // value is a plain string — for markdown, its SOURCE — and the textarea hands
+  // it back exactly as typed, blank lines and trailing newline included. The
+  // terminal input below cannot: it is one line, and the browser strips line
+  // breaks from the value it is seeded with — "a one-line text box is lossy",
+  // the reason #4228 recorded for keeping markdown out of this row, and the
+  // reason a stored multi-line note lost its line breaks on the first keystroke
+  // while `textarea` still edited there. `html` / `richtext` never reach this
+  // component: the hosts' gate still excludes them.
+  if (editType === 'markdown' || editType === 'textarea') {
     return <TextAreaField field={field as any} value={value} onChange={(v) => onChange(v)} autoFocus={autoFocus} error={error} />;
   }
   // Reference fields (lookup / master_detail / tree / user / owner) store an id
 
@@ -361,7 +361,10 @@ describe('types the fields package edits inline but the switch had no branch for
 // ---------------------------------------------------------------------------
 
 describe('class D — benign string types keep the terminal text input (#4220)', () => {
-  for (const type of ['text', 'textarea', 'email', 'url', 'phone']) {
+  // `textarea` stood in this list until objectui#11562 routed it to the
+  // multi-line `TextAreaField`; its pins are
+  // `InlineFieldInput.textareaEditor-11562.test.tsx`.
+  for (const type of ['text', 'email', 'url', 'phone']) {
     it(`\`${type}\` still edits in the plain input, and emits the typed string`, () => {
       const onChange = vi.fn();
       render(
 
@@ -0,0 +1,235 @@
+/**
+ * ObjectUI
+ * Copyright (c) 2024-present ObjectStack Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * objectui#11562 — `record:details` edit mode edits a `textarea` field in a
+ * MULTI-line editor, so a save writes back the text that was stored, line
+ * breaks included.
+ *
+ * Before, `textarea` was a member of `INLINE_PLAIN_TEXT_FIELD_TYPES` (class D,
+ * objectui#4220: "the stored value is already a string, nothing is lost"), so
+ * the row edited in this component's terminal input, an `<input type="text">`.
+ * That holds for a single-line value only. The browser strips every line break
+ * from the value a text input is seeded with, so a stored note with blank lines
+ * and a trailing newline was shown flattened, and one keystroke made the
+ * flattened string the value the Save batch wrote. Nothing warned.
+ *
+ * The row now routes `textarea` to the fields package's `TextAreaField`, the
+ * widget `markdown` got in objectui#11541 and the one a `textarea` field
+ * already edits with in the record form and in a grid cell. The pins below
+ * compare values BYTE for byte with blank lines and a trailing newline in them:
+ * a single-line editor cannot pass them. A single-line value is pinned beside
+ * them, so the move is shown to change nothing for it.
+ *
+ * The hosts' gate needed no change: `textarea` is not in the fields package's
+ * shared `INLINE_EXCLUDED_FIELD_TYPES`, so both detail hosts already opened an
+ * editor for it. It was the editor that was wrong.
+ */
+
+import * as React from 'react';
+import { describe, it, expect, vi, beforeAll } from 'vitest';
+import { render, screen, fireEvent, waitFor, act } from '@testing-library/react';
+import { InlineEditProvider, useInlineEdit } from '@object-ui/react';
+import type { DetailViewSection } from '@object-ui/types';
+import { FieldEditWidget } from '@object-ui/fields';
+import { DetailSection } from '../DetailSection';
+import { HeaderHighlight } from '../HeaderHighlight';
+import { InlineEditSaveBar } from '../InlineEditSaveBar';
+import { InlineFieldInput, INLINE_PLAIN_TEXT_INPUT_TESTID } from '../InlineFieldInput';
+
+/** A blank line inside and a trailing newline: the bytes a one-line box drops. */
+const MULTI_LINE = 'Call back Monday.\n\nBudget approved, needs legal review.\n';
+/** The control: a value a one-line box already kept intact. */
+const SINGLE_LINE = 'Call back Monday.';
+
+const plainInput = (root: ParentNode = document) =>
+  root.querySelector(`[data-testid="${INLINE_PLAIN_TEXT_INPUT_TESTID}"]`);
+const editors = (root: ParentNode) => root.querySelectorAll('input, textarea');
+const textareaIn = (root: ParentNode) => root.querySelector('textarea') as HTMLTextAreaElement | null;
+const hasPencil = () => screen.queryAllByLabelText('Double-click to edit').length > 0;
+
+beforeAll(() => {
+  // Desktop layout — the mobile branch renders its own read-only row shape.
+  Object.defineProperty(window, 'innerWidth', { configurable: true, value: 1280 });
+});
+
+// ---------------------------------------------------------------------------
+// The editor itself
+// ---------------------------------------------------------------------------
+
+describe('objectui#11562 — InlineFieldInput edits textarea in a multi-line textarea', () => {
+  for (const [label, stored] of [['multi-line', MULTI_LINE], ['single-line', SINGLE_LINE]] as const) {
+    it(`a ${label} value seeds a textarea byte for byte, never the terminal input`, () => {
+      const { container } = render(
+        <InlineFieldInput field={{ name: 'notes', type: 'textarea' }} value={stored} onChange={vi.fn()} />,
+      );
+      expect(plainInput(container)).toBeNull();
+      expect(textareaIn(container)).not.toBeNull();
+      expect(textareaIn(container)!.value).toBe(stored);
+    });
+
+    it(`one keystroke on a ${label} value emits the stored text plus that keystroke, exactly`, () => {
+      const onChange = vi.fn();
+      const { container } = render(
+        <InlineFieldInput field={{ name: 'notes', type: 'textarea' }} value={stored} onChange={onChange} />,
+      );
+      // Typed at the end of whatever the editor shows: the issue's repro. A
+      // one-line box shows the flattened text, so it would emit that.
+      const editor = container.querySelector('input, textarea') as HTMLTextAreaElement;
+      fireEvent.change(editor, { target: { value: `${editor.value}!` } });
+      expect(onChange).toHaveBeenCalledTimes(1);
+      expect(onChange.mock.calls[0][0]).toBe(`${stored}!`);
+    });
+  }
+
+  it('takes the entered field’s focus, like the other routed editors', () => {
+    const { container } = render(
+      <InlineFieldInput field={{ name: 'notes', type: 'textarea' }} value={MULTI_LINE} onChange={vi.fn()} autoFocus />,
+    );
+    expect(textareaIn(container)).toBe(document.activeElement);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// The two detail hosts open it
+// ---------------------------------------------------------------------------
+
+const textareaSchema = { fields: { notes: { type: 'textarea', label: 'Notes' } } };
+const notesSection = { fields: [{ name: 'notes', label: 'Notes' }] } as unknown as DetailViewSection;
+
+describe('objectui#11562 — both detail hosts open the multi-line editor', () => {
+  it('the details body shows the inline-edit affordance on a textarea row', () => {
+    render(
+      <DetailSection section={notesSection} data={{ notes: MULTI_LINE }} objectSchema={textareaSchema} onEnterInlineEdit={vi.fn()} />,
+    );
+    expect(hasPencil()).toBe(true);
+  });
+
+  it('the details body renders one editor for the textarea row in edit mode, seeded byte for byte', () => {
+    const { container } = render(
+      <DetailSection
+        section={notesSection}
+        data={{ notes: MULTI_LINE }}
+        objectSchema={textareaSchema}
+        isEditing
+        onEnterInlineEdit={vi.fn()}
+      />,
+    );
+    expect(editors(container)).toHaveLength(1);
+    expect(plainInput(container)).toBeNull();
+    expect(textareaIn(container)!.value).toBe(MULTI_LINE);
+  });
+
+  it('the highlights strip opens the same editor inside the edit session', () => {
+    function EnterEdit() {
+      const inline = useInlineEdit();
+      return <button type="button" onClick={() => inline!.enter('notes')}>enter-edit</button>;
+    }
+    const { container } = render(
+      <InlineEditProvider canEdit>
+        <HeaderHighlight fields={[{ name: 'notes', label: 'Notes' }]} data={{ notes: MULTI_LINE }} objectSchema={textareaSchema} />
+        <EnterEdit />
+      </InlineEditProvider>,
+    );
+    fireEvent.click(screen.getByText('enter-edit'));
+    expect(plainInput(container)).toBeNull();
+    expect(textareaIn(container)!.value).toBe(MULTI_LINE);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// The save reads back unchanged
+// ---------------------------------------------------------------------------
+
+describe('objectui#11562 — a textarea save reads back unchanged, line breaks included', () => {
+  // The multi-line edit appends a line that ends in a newline too; the
+  // single-line control appends words only, so it stays a one-line value.
+  const CASES = [
+    ['multi-line', MULTI_LINE, 'Follow-up booked.\n'],
+    ['single-line', SINGLE_LINE, ' Follow-up booked.'],
+  ] as const;
+  for (const [label, stored, typed] of CASES) {
+    it(`a ${label} value: the PATCH body carries the edit byte for byte, and the refetched record seeds it back`, async () => {
+      /** The server's copy of the record; `update` writes through the wire's JSON. */
+      const store: Record<string, unknown> = { id: 'r1', notes: stored, updated_at: 'v1' };
+      const wire: string[] = [];
+      const update = vi.fn(async (_object: string, _id: string, patch: Record<string, unknown>) => {
+        const body = JSON.stringify(patch);
+        wire.push(body);
+        Object.assign(store, JSON.parse(body), { updated_at: 'v2' });
+        return {};
+      });
+      const edited = `${stored}${typed}`;
+
+      /** Stand-in for `DetailView`: the fetched record overlaid with the draft. */
+      function Body({ record }: { record: Record<string, unknown> }) {
+        const inline = useInlineEdit()!;
+        return (
+          <>
+            <button type="button" onClick={() => inline.enter()}>enter-edit</button>
+            <DetailSection
+              section={notesSection}
+              data={{ ...record, ...inline.draft }}
+              objectSchema={textareaSchema}
+              isEditing={inline.editing}
+              onFieldChange={inline.setField}
+            />
+          </>
+        );
+      }
+      function Page() {
+        const [record, setRecord] = React.useState<Record<string, unknown>>(() => ({ ...store }));
+        const refresh = React.useCallback(async () => setRecord({ ...store }), []);
+        return (
+          <InlineEditProvider canEdit>
+            <Body record={record} />
+            <InlineEditSaveBar dataSource={{ update }} objectName="lead" recordId="r1" data={record} refresh={refresh} />
+          </InlineEditProvider>
+        );
+      }
+
+      const { container } = render(<Page />);
+      fireEvent.click(screen.getByText('enter-edit'));
+      // Whatever editor the row renders, the user types onto what it SHOWS.
+      const editor = container.querySelector('input, textarea') as HTMLTextAreaElement;
+      expect(editor.value).toBe(stored);
+      fireEvent.change(editor, { target: { value: `${editor.value}${typed}` } });
+
+      await act(async () => {
+        fireEvent.click(screen.getByRole('button', { name: 'Save' }));
+      });
+      await waitFor(() => expect(update).toHaveBeenCalledTimes(1));
+      expect(wire).toHaveLength(1);
+      expect(JSON.parse(wire[0])).toEqual({ notes: edited });
+      expect(store.notes).toBe(edited);
+      // Save leaves edit mode; re-entering seeds the editor from the refetched
+      // record. Editor-agnostic on purpose, like the reads above: the editor's
+      // KIND is pinned by the first describe, and this case is about bytes, so
+      // the single-line control reads the same before the fix and after it.
+      await waitFor(() => expect(container.querySelector('input, textarea')).toBeNull());
+      fireEvent.click(screen.getByText('enter-edit'));
+      expect((container.querySelector('input, textarea') as HTMLTextAreaElement).value).toBe(edited);
+    });
+  }
+});
+
+// ---------------------------------------------------------------------------
+// The grid cell: unchanged, and now the same editor as the row
+// ---------------------------------------------------------------------------
+
+describe('objectui#11562 — the grid cell editor is the same TextAreaField, unchanged', () => {
+  it('`FieldEditWidget`, which the grid cell editor delegates to, seeds a textarea byte for byte', () => {
+    // `ObjectGrid`'s `renderCellEditor` hands a `textarea` cell to
+    // `FieldEditWidget`; this file's change does not touch that path. The pin
+    // records that the row and the cell now edit with one widget.
+    const { container } = render(
+      <FieldEditWidget field={{ name: 'notes', type: 'textarea' }} value={MULTI_LINE} onChange={vi.fn()} />,
+    );
+    expect(textareaIn(container)!.value).toBe(MULTI_LINE);
+  });
+});