Using Nebula TextAssist from Glimmer DSL for SWT

Recently, I received a support request concerning Glimmer DSL for SWT (JRuby Desktop Development GUI Framework) and the use of Nebula Custom Widgets, specifically the text_assist widget (auto-complete text field).

For a quick background about Nebula, it is a collection of 55+ enterprise-grade high-quality SWT (Standard Widget Toolkit) custom widgets, including a progress circle, a password revealer, and an oscilloscope. Thanks to Glimmer DSL for SWT, they are usable from Ruby.