Code completion for tag names of Seam config xml

For example

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:s="urn:java:ee" 
       xmlns:r="urn:java:org.example.reports">

 	<r:Report>  
 		<s:modifies/>
 		<r:filename>sales.jrxml<r:filename>
 		<r:datasource>
 			<r:SalesQualifier/>
 		</r:datasource>
  	</r:Report>
  	
 	<r:Report filename="billing.jrxml">
 		<s:replaces/>
 		<r:datasource>
 			<s:Inject/>
 			<s:Exact>org.example.reports.BillingDatasource</s:Exact>
 		</r:datasource>
  	</r:Report>  	
</beans>

<r:| - here we can propose a list of all the classes available in org.example.reports package.

See http://docs.jboss.org/seam/3/config/latest/reference/en-US/html/index.html

The full list of all types of such a code completion is TBD.

1. In context of <beans> ... </beans>
   Suggest all classes and annotation types in available packages.
2. In context of tag header <r:Report | >
   Suggest all fields available if Report is class;
   Suggest all methods available if Report is annotation type.
3. In context of tag content <r:Report> | </r:Report>
   Suggest <s:replaces/> and <s:modifies/> if Report is class;
   Suggest <s:parameters> if Report is class;
   Suggest all fields and methods available if Report is class;
   Suggest all methods available if Report is annotation type;
   Suggest all annotation types in available packages.
4. In context of <r:Report> <r:address> | </r:address> </r:Report>
   Suggest <s:value> if 'address' is class field or annotation type method;
   Suggest <s:entry> if 'address' is class field or annotation type method (maybe we should check that it is map);
   Suggest <s:parameters> if 'address' is class method;
   Suggest all annotation types in available packages.
5. In context of <s:entry> | </s:entry>
   Suggest <s:value> and <s:key>
6. In context of <s:value> | </s:value> or <s:key> | </s:key>
   Suggest all classes in available packages since value may be set as an inline bean.
7. In context of <s:parameters> | <s:parameters>
   Suggest types in available packages as types of parameters.
8. In context of xmlns:*="|"
   Suggest "urn:java:" with available packages.