ContextMenu -- Accessibility

Keyboard

Key	Action
Right-click	Opens the context menu at the pointer position.
`ArrowDown` / `ArrowUp`	Navigate through menu items. Focus wraps from last to first and vice versa.
`Enter` / `Space`	Activate the focused item, or toggle a checkbox/radio item.
`Escape`	Close the menu. If a sub-menu is open, closes only the sub-menu first.
`ArrowRight`	Opens a sub-menu when the focused item is a sub-menu trigger.
`ArrowLeft`	Closes the currently open sub-menu and returns focus to its trigger in the parent menu.
`Home` / `End`	Jump to the first or last item in the current menu level.
Type-ahead	Typing a character moves focus to the next item whose label starts with that character.

role="menu" on ContextMenuContent and ContextMenuSubContent.
role="menuitem" on standard ContextMenuItem elements.
role="menuitemcheckbox" on ContextMenuCheckboxItem, with aria-checked reflecting the current state.
role="menuitemradio" on ContextMenuRadioItem, with aria-checked on the selected item.
role="separator" on ContextMenuSeparator to divide groups of related items.
role="group" on ContextMenuGroup with an optional aria-label to label a section.
Sub-menu triggers have aria-haspopup="menu" and aria-expanded indicating whether the sub-menu is open.

When the menu opens, focus moves to the first item and the screen reader announces it along with its role (e.g., "Back, menu item").
Checkbox and radio items announce their checked state (e.g., "Show Bookmarks Bar, menu item checkbox, checked").
Disabled items are announced as "dimmed" or "unavailable" depending on the screen reader.
Keyboard shortcuts rendered with ContextMenuShortcut are announced as part of the item label.
Sub-menu triggers are announced with an indication that they open a sub-menu (e.g., "Share, sub-menu").

On touch devices, the context menu is triggered by a long-press gesture (approximately 500ms).
The component detects pointer type internally -- mouse uses right-click, touch uses long-press.
Once open, items are activated by tapping. There is no hover state on touch.
Tapping outside the menu dismisses it.

Trigger activates on long-press (500ms).
Uses Modal for the overlay to ensure the menu renders above all other content.
accessibilityRole="menu" on the content container.
Each item has accessibilityRole="menuitem".
Checkbox items announce their state via accessibilityState={{ checked }}.

Ensure all important actions exposed in a context menu are also reachable through other visible UI controls. Context menus are a power-user shortcut, not the primary interface.
Group related items with ContextMenuSeparator and ContextMenuLabel to improve scannability.
Use the destructive variant for dangerous or irreversible actions so they are visually distinct.
Keep menus shallow -- avoid nesting sub-menus more than one level deep.
Include keyboard shortcut hints via ContextMenuShortcut so users can learn direct shortcuts over time.
Disabled items should remain visible (not removed) so users understand the full set of available actions.