How to show popup of an AutoCompletationBinding by code

**[Original report](https://bitbucket.org/controlsfx/controlsfx/issue/819) by Ahmed (Bitbucket: [ahmedmourad](https://bitbucket.org/ahmedmourad), GitHub: [ahmedmourad](https://github.com/ahmedmourad)).**

----------------------------------------

Hi,

I'm looking for a way to show the Autocompletion popup with the full list of suggestions when the textfield is empty. This should happen when the user clicks the textfield or presses the down key.

This's the code i use to bind autocompletion:

```
#!java

AutoCompletionBinding accountIdBinding = TextFields.bindAutoCompletion(accountIdEditText, accountIdsArrayList);
```

The whole accountIdsArrayList should show on the autocomplete popup when the textfield is empty.

Best regards,

Start with TextFields.bindAutoCompletion and the AutoCompletionBinding API shown in the issue. Trace how the autocomplete popup handles an empty text field and activation by click or the down key. Done means the full accountIdsArrayList appears when either action occurs with no text entered.

Written by the indexing model from the issue text.