Web Browser / WebUI input events bubbling

[BBB]

How do I bubble up mouse events from clicked widgets, esp Web Browser?

I’m interested in having mouse drag and click events bubble up to my player controller, even if the cursor is over a widget that is mouse intractable. Specifically, I’d like to make it possible to do my entire UI as a WebBrowser component, with transparency, and still have mouse click and drag events register with my controllers and not be handled and absorbed by the WebBrowser component. But, I don’t have the experience to really know how to get started.