ADF 11G : How to work with Drop functionality?

ADF 11G : How to work with Drop functionality?

package view;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import javax.faces.component.ContextCallback;

import javax.faces.component.UIComponent;

import javax.faces.component.UIViewRoot;

import javax.faces.context.FacesContext;

import oracle.adf.view.rich.component.rich.data.RichTable;

import oracle.adf.view.rich.context.AdfFacesContext;

import oracle.adf.view.rich.datatransfer.DataFlavor;

import oracle.adf.view.rich.datatransfer.Transferable;

import oracle.adf.view.rich.dnd.DnDAction;

import oracle.adf.view.rich.event.DropEvent;

import oracle.jbo.Row;

import oracle.jbo.uicli.binding.JUCtrlHierNodeBinding;

import org.apache.myfaces.trinidad.event.PollEvent;

import org.apache.myfaces.trinidad.model.RowKeySet;

public class NeelmaniDropHandlerBean {

    public NeelmaniDropHandlerBean() {

        super();

    }

    

    public DnDAction neelDropHandler(DropEvent dropEvent) {

        RichTable table = (RichTable) dropEvent.getDragComponent();

        Transferable t = dropEvent.getTransferable();

        DataFlavor df =

            DataFlavor.getDataFlavor(RowKeySet.class, "rowmove");

        RowKeySet rks = t.getData(df);

        Iterator iter = rks.iterator();

        while (iter.hasNext()) {

            //get next selected row key

            List key = (List)iter.next();

            //make row current so we can access it

            table.setRowKey(key);

            //the table model represents its row by the ADF binding class, which is

            //JUCtrlHierNodeBinding

            JUCtrlHierNodeBinding rowBinding = (JUCtrlHierNodeBinding) table.getRowData();

            //DCDataRow is the generic row class representation in in ADF. It is

            //the super class of oracle.jbo.Row, which you use with ADF BC services

            Row row = (Row) rowBinding.getRow();

            //delete row

            row.remove();

            //activate animation           

        }

       

      Map viewScope = AdfFacesContext.getCurrentInstance().getViewScope();

      //show different icon for bin colelctor. The new icon

      //does not take drop payloads and is shown for 1 second

      viewScope.put("binState", "fullRecycle");

      //refresh garbage bin parent (panelGrouplLayout)

      refreshComponentContainer("pgl1"); 

      AdfFacesContext.getCurrentInstance().addPartialTarget(table);

      //table source is manually refreshed, so we ca return NONE

      return DnDAction.NONE;

    }

   

    private void refreshComponentContainer(String id){

      String comp = id;

      //see ADF Code Corner sample #58 to read about the code

      //used in the search below

      FacesContext fctx = FacesContext.getCurrentInstance();

      UIViewRoot root = fctx.getViewRoot();           

         root.invokeOnComponent( fctx,comp,

          new ContextCallback(){

             public void invokeContextCallback(FacesContext facesContext,

                                               UIComponent uiComponent) {

                //refresh parent container                

                 AdfFacesContext.getCurrentInstance().addPartialTarget(uiComponent);

            }        

      });

    }

   

    public void onPoll(PollEvent pollEvent) {

        Map viewScope = AdfFacesContext.getCurrentInstance().getViewScope();

        //show different icon for bin colelctor. The new icon

        //does not take drop payloads and is shown for 1 second

        viewScope.put("binState", "emptyRecycle");

       //refresh garbage bin parent (panelGrouplLayout)

       refreshComponentContainer("pgl1");

    }

}