ui/_docs/02_document/modules/src__features__dataset__DatasetPage.md

Module: src/features/dataset/DatasetPage.tsx

Compact module doc. Spec: _docs/ui_design/README.md (Dataset Explorer Layout) and parent suite ../../../../_docs/09_dataset_explorer.md (API contract). Imports CanvasEditor from ../annotations/ — see cross-feature edge in 00_discovery.md §8.

Purpose

Owns the /dataset route. Read-side surface for the Annotations table: paginated thumbnail grid, date / class / status / objects-only / name filters, inline editing through the Annotations Tab's CanvasEditor, and a class-distribution chart. Mirrors the legacy Azaion.Dataset.DatasetExplorer window (_docs/legacy/wpf-era.md §5).

Public interface

Default-exported page component, no props. Mounts under /dataset in App.tsx.

Internal logic

• Tabs: 'annotations' (grid, default) | 'editor' (hidden until a thumbnail is double-clicked) | 'distribution' (bar chart). State held in component.
• Filters: fromDate, toDate, statusFilter (AnnotationStatus), selectedClassNum (from DetectionClasses), objectsOnly (boolean), search (400 ms debounced via useDebounce).
• Pagination: client page state, server pageSize fixed at 20, totalPages = ceil(totalCount / pageSize).
• Selection: Set<annotationId>. Plain click replaces; Ctrl+click toggles. Validate button appears when set is non-empty.
• Validate: POST /api/annotations/dataset/bulk-status with { annotationIds[], status: Validated }.
• Distribution: lazy-loaded on tab switch via GET /api/annotations/dataset/class-distribution.
• Editor tab mounts <CanvasEditor> with a synthesised Media stub built from editorAnnotation.mediaId (most fields blank). Used so CanvasEditor can fetch the image via /api/annotations/annotations/{id}/image.

Dependencies

• Internal: api/client, useDebounce, useResizablePanel (left panel 250 / 200–400), FlightContext, DetectionClasses, ConfirmDialog (imported but not used here — see Findings), features/annotations/CanvasEditor, types/index.
• External: react, react-i18next.

External integrations

Endpoint	Where	Notes
GET /api/annotations/dataset?...	fetchItems	Filters: page, pageSize, fromDate, toDate, flightId, status, classNum, hasDetections, name.
GET /api/annotations/dataset/{id}	handleDoubleClick	Loads full AnnotationListItem for the editor tab.
POST /api/annotations/dataset/bulk-status	handleValidate	Body: { annotationIds, status }.
GET /api/annotations/dataset/class-distribution	loadDistribution	Class histogram.
GET /api/annotations/annotations/{id}/thumbnail	grid tile <img src=>	One HTTP per visible tile.
GET /api/annotations/annotations/{id}/image	CanvasEditor (delegated)	When the editor is open.

Spec contract is in parent suite _docs/09_dataset_explorer.md.

Findings carried into Step 4 / 6 / 8

1. No keyboard shortcuts implemented: spec demands 1–9 (class), Enter (save), Del (delete), X (delete all), Esc (close editor), V (validate selected), Up/Down/PageUp/PageDown (navigate). Only Ctrl+click for multi-select works. The editor tab has no Save / Delete buttons either. Step 6 problem extraction.
2. Refresh thumbnails button is missing — spec calls for a status-bar action to regenerate the thumbnail database with progress. Step 6.
3. No virtualisation in the grid: spec says "virtualized grid" — current code renders all items returned by the page (max 20 due to pageSize). For larger pages performance would degrade. Today not a problem because pageSize=20. Step 8.
4. Editor tab does not Save: opening an annotation in the editor lets the user edit editorDetections locally but there's no Save / Cancel control wired up. Edits are discarded when the user changes tab. Step 6.
5. editorMedia synthetic stub — mediaType: 1 is a magic number (MediaType.Image = 1); should reuse the enum import already present. Step 4.
6. ConfirmDialog imported but never used — dead import. Step 4 cleanup.
7. fetchItems does catch {} silently — same coderule.mdc violation as elsewhere. Step 4.
8. Empty-state: when items.length === 0 the grid renders nothing; no "No matches" message. Step 4.
9. thumbnail URL does not include a cache-buster; if a thumbnail is regenerated server-side, the browser will keep the stale image. Step 4 / Step 8.
10. isSeed red-ring is correctly rendered, but isSeed is not in AnnotationStatus filters — the user can't filter to seeds-only. Step 6 if intended.
11. Date inputs accept any <input type="date"> string; no validation that fromDate ≤ toDate. Step 4.
12. Status filter buttons skip status None (spec lists None as one of the four buttons) — current code shows All, Created, Edited, Validated, conflating All with "include None". Step 4.
13. selectedClassNum=0 is the "no filter" sentinel but also a real class number (class 0 exists per _docs/ui_design/README.md → military vehicle). Selecting class 0 in DetectionClasses is indistinguishable from "no filter". Step 6.
14. Inherits one cross-cutting UI fix and one cross-repo parent-doc fix (resolved with user 2026-05-10):
    • [STEP 4 — UI FIX] AnnotationStatus values must change from UI 0/1/2 to spec 0/10/20/30/40 (src/types/index.ts:23). Every status filter button in this page (null/null/Created/Edited/Validated) currently sends a wrong integer. The "All" button is value null (no filter) — keep, but also expose a real "None" filter using the new AnnotationStatus.None=0. PRIORITY for Step 4. See annotations doc finding #27.
    • [RESOLVED 2026-05-10] DatasetItem.isSplit is correct on UI; parent ../../../../_docs/09_dataset_explorer.md §1 response schema now includes it. See annotations doc finding #33.

Tests

None.

Cross-doc references

• Parent suite Dataset Explorer API: ../../../../_docs/09_dataset_explorer.md
• UI spec: ../../ui_design/README.md (Dataset Explorer Layout, Keyboard Shortcuts).
• Imports CanvasEditor from features/annotations/ — see 00_discovery.md §8 cross-feature edge.
• Legacy WPF reference: ../../legacy/wpf-era.md §5 (Dataset Explorer window).