Implementing Cut, Copy & Paste in a page having 70 odd widgets

Hi,

I am trying to implement the cut, copy and paste functionality for a
page that has around 70 widgets including text boxes, list boxes,
labels, containers, panels and so on. The cut, copy and paste buttons
are part of these. When a User selects text in some text box in the
page and clicks on copy, the text box loses focus and the copy button
now has it. I need the text to call a method that has some Javascript
call in it like:

$wnd.window.clipboardData.setData("Text",text);

In order for me to do that I need text from the text box and because
the copy button now has it, I do not know where it has been selected
from.

Can anyone let me know if they have done anything similar before using
GWT?

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