HTML Widget interaction with Photoshop

Hey guys,

I'm trying to create a little PS plugin and I consider HTML/CSS/JavaScript the best developing enviroment for me, it would be great if I could use just HTML Widget for the whole project.

But I could't find out if this widget can do some essential things:

1. JavaScript in HTML widget can react on "ThemeChangedEvent", can he do the same for other Photoshop events? For example for rendering name of current layer right after it was selected.
2. I know it's possible to invoke Photoshop API code ("_AdobeInvokeScript()"), but can I actually get some data from this script to my HTML? For example for rendering all layer names in my html.

I hope it's not a problem do this stuff. I look forward for your response.

Thank you,

Adam