ListGrid Filtering and grouping ( filtering not working )

[cegottardi]

smartgwtee-2.3
FireFox 3.5.9 ( linux )

No server side.
Client side no javascript errors or warnings

I hope you cant understand me with my poor English.
I have a GRID and the application fetch the data from my mysql DB.
The problem is that when i setGroupByField the filtering stop working but if i disable it, the filtering works again.
Is it possible to Group and filter in a list grid?
wich is my error?

The code is a little messy but i'ts understandable "i I think"

greetings

package com.smartgwt.sample.client;



import com.smartgwt.client.data.Criteria;
import com.smartgwt.client.data.Record;
import com.smartgwt.client.data.RestDataSource;
import com.smartgwt.client.data.fields.DataSourceDateField;
import com.smartgwt.client.data.fields.DataSourceTextField;
import com.smartgwt.client.types.DSDataFormat;
import com.smartgwt.client.widgets.form.SearchForm;
import com.smartgwt.client.widgets.form.fields.ButtonItem;
import com.smartgwt.client.widgets.form.fields.CheckboxItem;
import com.smartgwt.client.widgets.form.fields.HeaderItem;
import com.smartgwt.client.widgets.form.fields.TextItem;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridField;
import com.smartgwt.client.widgets.grid.events.RecordClickEvent;
import com.smartgwt.client.widgets.grid.events.RecordClickHandler;
import com.smartgwt.client.widgets.layout.VStack;
import com.smartgwt.client.widgets.tab.Tab;
import com.smartgwt.client.widgets.tab.TabSet;
import com.smartgwt.client.widgets.viewer.DetailViewer;

public class ConsulPer  {
	
	public static VStack vstack;
	private ButtonItem findItem;
	final SearchForm searchForm = new SearchForm();
	final ListGrid listGrid = new ListGrid();
	
	public static ConsulPer instance = null;
	
	
	public static VStack getInstance() {
		if ( instance == null ){
			instance = new ConsulPer();
		}
		return vstack;
		
	}

		
	public ConsulPer(){
		
		
		// Creo los layouts para el formulario
		// y los botones del formulario
		// 
		
		vstack = new VStack();
	    vstack.setMembersMargin(5);
	    final DetailViewer itemViewer = new DetailViewer();  
	    
	      
	    //
	    // creo el datasource del formulario
	    //
	    
	    RestDataSource dataSource = new RestDataSource();
	    dataSource.setDataFormat(DSDataFormat.JSON);
	    dataSource.setDataURL("http://nuovamed.com/getAfil.php");
	    
	    DataSourceTextField dni = new DataSourceTextField("dni", "DNI", 50, true);
	    dni.setPrimaryKey(true);
        DataSourceTextField nombre = new DataSourceTextField("nombre", "NOMBRE", 50, true);
        DataSourceTextField domicilio = new DataSourceTextField("domicilio", "DOMICILIO", 100, false);
        DataSourceTextField telefono = new DataSourceTextField("telefono", "TELEFONO");
        DataSourceDateField fnac = new DataSourceDateField("fnac", "F.NACIMIENTO", 100, true);
        DataSourceTextField dnititular = new DataSourceTextField("dnit", "DNI Titular", 50, true);
        DataSourceTextField nafilfield = new DataSourceTextField("nafil", "Nš AFIL", 50, false);
        DataSourceTextField empresafield = new DataSourceTextField("empresa", "EMPRESA", 50, true);
        
        dataSource.setFields(dni, nombre, domicilio, fnac, telefono, dnititular, nafilfield, empresafield);
        
        //
        //creo el formulario searchForm
        //
	    
	    
	    vstack.addMember(searchForm);
	    //tabLabel.addChild(searchForm);
	    searchForm.setWidth100();
	    searchForm.setTop(5);
        searchForm.setBackgroundColor("#EEFFFF");
        searchForm.setGroupTitle("Busqueda");
        searchForm.setIsGroup(true);  
        searchForm.setCellPadding(15);
        searchForm.setNumCols(7); 
        searchForm.setDataSource(dataSource);
        searchForm.setUseAllDataSourceFields(false);
        
        TextItem searchFormField = new TextItem("dni");
        searchFormField.setWidth(200);
        
        TextItem searchFormAfil = new TextItem("nafil");
        searchFormAfil.setWidth(200);
        
        CheckboxItem findInCategory = new CheckboxItem("findInCategory");  
        findInCategory.setTitle("Titulares");  
        findInCategory.setDefaultValue(true);  
        findInCategory.setShouldSaveValue(false);  
        
        HeaderItem header = new HeaderItem();
        header.setDefaultValue("Busqueda de afiliados");
	    
        findItem = new ButtonItem("Buscar"); 
        findItem.setWidth(70);  
        findItem.setEndRow(false);
        findItem.addClickHandler(new com.smartgwt.client.widgets.form.fields.events.ClickHandler() {  
            public void onClick(com.smartgwt.client.widgets.form.fields.events.ClickEvent event) {  
                findItems(null);  
            }  
        });
       
	    
                
        searchForm.setItems(findItem, searchFormField, searchFormAfil, findInCategory);
        
        //
        // Creo el ItemListGrid
        //
        
        listGrid.setWidth100();  
        listGrid.setHeight(250);
        listGrid.setGroupByField("empresa");
        listGrid.setDataSource(dataSource);
        listGrid.setCanEdit(true);
        listGrid.setAutoFetchData(true);
        listGrid.addRecordClickHandler(new RecordClickHandler() {  
            public void onRecordClick(RecordClickEvent event) {  
            	Record selectedRecord  = listGrid.getSelectedRecord(); 
            	itemViewer.setData(new Record[]{selectedRecord}); 
            }  
        });  
        vstack.addMember(listGrid);
        ListGridField dniGrid = new ListGridField("dni", "DNI"); 
        ListGridField dnitGrid = new ListGridField("dnit", "DNI Titular");
        ListGridField nafilGrid = new ListGridField("nafil", "Nš AFIL");
        ListGridField nombreGrid = new ListGridField("nombre", "Nombre");
        ListGridField domGrid = new ListGridField("domicilio", "Domicilio");
        ListGridField telGrid = new ListGridField("telefono", "Telefono");
        ListGridField fnacGrid = new ListGridField("fnac", "F.Nacimiento");
        ListGridField empresaGrid = new ListGridField("empresa", "Empresa");
        
        listGrid.setFields(dniGrid, dnitGrid, nafilGrid, nombreGrid, domGrid, telGrid, fnacGrid, empresaGrid);
        
        TabSet tabDetail = new TabSet();
        
          
        itemViewer.setDataSource(dataSource); 
        itemViewer.setWidth100();  
        itemViewer.setMargin(0);  
        itemViewer.setEmptyMessage("Elegir un registro para ver");  
        
        Tab viewTab = new Tab("View");  
        viewTab.setWidth(70);  
        viewTab.setPane(itemViewer);  
  
        Tab editTab = new Tab("Edit");  
        editTab.setWidth(70);  
        //editTab.setPane(editorForm);  
        
        tabDetail.setTabs(viewTab, editTab);  
        tabDetail.setHeight(200);
        
        vstack.addMember(tabDetail);
        
        
        
        
        
        
	    
	}
	
	public void findItems(String categoryName) {  
		  
        Criteria findValues;  
        findValues = searchForm.getValuesAsCriteria();
        listGrid.filterData(findValues);
        
          
    }  
		
		

	
	

}