Does any way of «web-page to widget» interaction exist?
I'm developing mash-up widget which use last.fm as music catalog and vkontakte.ru as mp3 library to play music (you can try it).
So i want to use widget as opera search engine: select any text on page and quickly open widget with selected string as parameter. Widgets in sandbox, but there are no any security risks here
Loiking in future: It could looks like ie web-slice but much greater
Does any way of «web-page to widget» interaction exist?
There isn't... at least not in a way you specified... a widget would have to pull data from the page itself with AJAX but that doesn't help you in this case...
I think you could have some kind of a workaround by adding an item to the right-click menu which runs an application with selected text as an argument. But i'm not sure if it's possible to do this only by the means of a widget.