[web] a11y support for tables #45205
Description
There are many a11y features for tables which includes:
- Read column header
- Read row
- Read column
- Move up or down in a column
- Move across a row
We should add support for these use cases in Flutter for Web.
https://api.flutter.dev/flutter/widgets/Table-class.html
https://api.flutter.dev/flutter/material/DataTable-class.html
https://api.flutter.dev/flutter/material/PaginatedDataTable-class.html
| OS | role |
|---|---|
| web | table |
| ios | - |
| macos | NSAccessibilityTableRole |
| windows | ROLE_SYSTEM_TABLE |
| android | android.widget.TableLayout |
https://api.flutter.dev/flutter/widgets/TableRow/children.html
https://api.flutter.dev/flutter/material/DataCell-class.html
| OS | role |
|---|---|
| web | cell |
| ios | - |
| macos | NSAccessibilityCellRole |
| windows | ROLE_SYSTEM_CELL |
| android | - |
https://api.flutter.dev/flutter/widgets/TableRow-class.html
https://api.flutter.dev/flutter/material/DataRow-class.html
| OS | role |
|---|---|
| web | row |
| ios | - |
| macos | NSAccessibilityGroupRole, NSAccessibilityTableRowSubrole |
| windows | ROLE_SYSTEM_ROW |
| android | android.widget.TableRow |
https://api.flutter.dev/flutter/material/DataColumn/label.html
| OS | role |
|---|---|
| web | columnheader |
| ios | - |
| macos | NSAccessibilityCellRole |
| windows | ROLE_SYSTEM_COLUMNHEADER |
| android | - |
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