UIDesigner Toolbar Extension for 915

Hello,
It have been posted early in guidelines. In 915 JetBrains have add
JPasswordField and new nice icons :) But follow components still expected:

• JSpinner

• JSlider

• JProgressBar

I try to fill this space...
Here the extension with those components:
http://www.intellij.org/twiki/bin/view/Main/IntelliJUIDesignerGuide#Adding_custom_components

Thanks!
--
Alexey Efimov, Software Engineer
Sputnik Labs,
http://www.spklabs.com