Change text of buttonCell in celltable

Hi,

I have a celltable which has one column as ButtonCell.

I am doing some server side work on click of this button. 

Now, i want that the text should change to 'Loading...' when clicked on this button and should again to its original text after i finish server side work.

The point is to show the user that the click has happened and to wait till work in progress.

col.setFieldUpdater() has nothing to achieve this.

Can you pls give me some solution ...

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Deepak Singh

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