## Keyboard Shortcuts

| Shortcut | Behavior |
|----------|----------|
| `Down Arrow`| Selects the next available item.|
| `Up Arrow`| Selects the previous available item.|
| `Alt Down` | Opens pop up|
| `Alt 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 should implement the KB specification for a **PopuList** component.

## Resources

https://www.w3.org/TR/wai-aria-practices/#combobox
https://www.w3.org/TR/wai-aria-practices/examples/combobox/aria1.1pattern/listbox-combo.html
https://www.w3.org/TR/wai-aria-practices/#listbox_kbd_interaction