Editable combobox (text input + role="listbox" popup) implementing the APG
pattern: aria-expanded, aria-activedescendant, arrow/Home/End/PageUp/
PageDown navigation, type-to-filter, Enter to commit, Escape/outside-click
to dismiss. Selection emits a cancelable hl:select followed by
hl:change; the committed value is controllable through the returned API.
Editable combobox (text input +
role="listbox"popup) implementing the APG pattern:aria-expanded,aria-activedescendant, arrow/Home/End/PageUp/ PageDown navigation, type-to-filter, Enter to commit, Escape/outside-click to dismiss. Selection emits a cancelablehl:selectfollowed byhl:change; the committed value is controllable through the returned API.