How can I get a JQL search bar in my plugin?

[Duane Sitte]

I want to use a user supplied JQL query to create a subset of Issues before processing them within my plugin. Is it possible to get the same search bar used in the Advanced Issue Search in my plugin, or any type of JQL auto-completing textbox? 

[Petar Petrov (Appfire)]

I don't think there is an out-of-the-box AUI component for this, but it is fairly simple to implement - it is just a text box with some CSS styles. The most important part is the service for automatic completion on key stroke - luckily it is part of the REST API:

GET /rest/api/2/jql/autocompletedata