## Keyboard Shortcuts

| Shortcut | Behavior |
| -------- | -------- |
| `Down Arrow` | Selects the next available item. |
| `Up Arrow` | Selects the previous available item. |
| `Alt/Opt(Mac) Down` | Opens pop up |
| `Alt/Opt(Mac) Up` or `Esc` | Closes popup |
| `Esc` | Clears the value if popup is not visible |


Typing in the input should focus matched item.


The Popup element of the component must implement the KB specification for a Popup List component.

| Shortcut | Behavior |
| -------- | -------- |
| `Down Arrow` | Moves the focus to the next item. |
| `Up Arrow` | Moves the focus to the previous item. |
| `Alt` (or `Opt` on Mac) + `Up Arrow` or `Esc` | Closes the popup. |
| `Home` | Moves the focus to the first item. Applicable only when the currently focused element is not an input. When an input is the focused element, the `Home` and `End` keys are used for the cursor position. |
| `End` | Moves the focus to the last item. Applicable only when the currently focused element is not an input. When an input is the focused element, the `Home` and `End` keys are used for the cursor position. |
| `Enter` | Initiates item click. |
| `Page Up` | Scrolls the popup list up. |
| `Page Down` | Scrolls the popup list down. |
| `Tab` | Closes the popup and focuses the next focusable element. |

### ActionSheet Popup


In adaptive mode, the popup element of the MultiColumnComboBox has to implement the keyboard navigation specification for an ActionSheet component.

[ActionSheet  specification]({{actionsheet_kb_link}})


The following rules deviate from the standard ActionSheet behavior:

| Shortcut | Behavior |
| -------- | -------- |
| `Tab` | Closes the actionsheet and focuses the next focusable element. |

## Resources

[ARIA Authoring Practices: Combobox Pattern ](https://www.w3.org/WAI/ARIA/apg/patterns/combobox/)

[ARIA Authoring Practices: Listbox Pattern](https://www.w3.org/WAI/ARIA/apg/patterns/listbox/)

[ARIA Authoring Practices: Editable Combobox](https://www.w3.org/WAI/ARIA/apg/patterns/combobox/examples/combobox-autocomplete-none/)