DropObject Event Handler


Is there any DropObject event handler for web ? or is there any way we could have that functionality on some controls , pages ?

Why ? well I need to drop some text on the page and then the code should parse that text and get the proper data from it. and having 3, 5 buttons to be able to do that is to much for a workflow so we need it to be straight forward, have a region , location, page where we can drop that text and then it gets processed.