Hello,

I am looking for examples of "undo/redo using the Command pattern, I
did not find any example that helps explain the use of this pattern
for this case .

Suppose I have a text box, when the user changes the value of this
area and tap "Enter" an RPC is launched to the server to save the
change. I wanted to add a button "undo"so that when the user clicks
over the text area takes the previous value and an RPC is lunched to
update the value in the server and take into account the undo.

I also wanted to add a button "redo" for the opposite behavior.

Could you give me an idea about how to implement this behavior with
the Command Pattern?

Thank you in advance for your help

I use GWT 2.3 on Eclipse 3.6.

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