Finally I wrote some IDataEditor component with a multi content picker... As the current provided want doesn't work as expected (related to the $currentPage) ! I nearly through but I would like to know what field I'm currently editing. By example I have this XPAth for a field

$currentPage/ancestor-or-self::* [@level = 2]/descendant::*[fieldTarget='applicationWidgets']/*

This enables me to select some items where the fieldtarget corresponds to the current field I'm editing.  For now I need to create a DataType for each field in my document type wherre I Specify what field I want to edit.

I would like to do this automatically with some variable and replacement, as $currentPage, I would like to use $currentField to use within my xpath.

So the question is simple, how do I get the current field alias I'm editing ? :-)

 Thank you

N.B. :

Comment For the uComponent guy to get the currentNode : This will save life of thousand peoplle

         protected  int   GetCurrentNodeAvailable()
 

         {

             int  nodeId = -1;

             try 

             {

                 if  (Node .GetCurrent() != null )

                 {

                     return  Node .getCurrentNodeId();

                 }

             }

             catch 

             {

                 ;

             }

             try 

             {

                 nodeId = ((umbraco.cms.businesslogic.datatype.DefaultData )data).NodeId;

                 if  (nodeId > 0) return  nodeId; 

             }

             catch 

             {

                 ;

             }

             int .TryParse(base .Page.Request.QueryString["id" ], out  nodeId);

             return  nodeId;

         }