Component tree parsing in PhaseListener

[Ranadhir Nag]

In the afterphase of the RESPONSE_RENDER of our phaselistener,we parse the component tree to collect some event-specific data.
This data needs to be rendered/dispatched along with the requested page .
A javascript parser on the client will ectract this data to perform certain actions on the components.
How can this data be sent back along with the document?
Can a phaselistener modify the component tree to add a hidden field?
Any help/suggestion in dispatching this data from the phaselistener along with the requested view,will be much appreciated.