Returns in candidate in the current page.
Returns the current page index.
Returns the selected candidate.
Returns the selected index.
Sets the selected index.
Returns the total page count.
Moves to the first one of all candidates.
Moves to the last one of all candidates.
Moves to the next candidate.
Moves to the next page.
Moves to the next page. If it is already at the last page, moves to the first page.
Moves to the previous candidate.
Moves to the previous page.
Pass a key and return the corresponding candidate.
The key from the keyboard, such as "1", "2", "a" and so on.
The corresponding candidate or the undefined value.
Helps to control the candidate window.