/**
*
*/
package org.richfaces.event.sort;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import org.richfaces.component.UIScrollableDataTable;
import org.richfaces.component.util.ColumnUtil;
import org.richfaces.model.SortField;
import org.richfaces.model.SortOrder;
import org.richfaces.model.selection.SimpleSelection;
/**
* @author Maksim Kaszynski
*
*/
public class SingleColumnSortListener extends AbstractSortListener {
public static final SingleColumnSortListener INSTANCE = new SingleColumnSortListener();
private SingleColumnSortListener() {
}
/* (non-Javadoc)
* @see org.richfaces.event.sort.SortListener#processSort(org.richfaces.event.sort.SortEvent)
*/
public void processSort(SortEvent e) {
UIScrollableDataTable grid = (UIScrollableDataTable) e.getComponent();
//fix https://jira.jboss.org/jira/browse/RF-4368
SimpleSelection selection = (SimpleSelection) grid.getSelection();
if (selection != null) {
selection.clear();
}
String sortColumn = e.getSortColumn();
UIComponent column = grid.findComponent(sortColumn);
String name = ColumnUtil.getColumnSorting(column);
SortOrder sortOrder = grid.getSortOrder();
if (sortOrder == null) {
sortOrder = new SortOrder();
grid.setSortOrder(sortOrder);
if (grid.getValueExpression("sortOrder") != null) {
grid.getValueExpression("sortOrder").setValue(FacesContext.getCurrentInstance().getELContext(), sortOrder);
}
}
SortField[] fields = sortOrder.getFields();
SortField newField = new SortField(name, nextSortOrder(null, e.getSuggestedOrder()));
if (fields != null) {
for (int i = 0; i < fields.length; i++) {
SortField sortField = fields[i];
if (name != null && name.equals(sortField.getName())) {
Boolean asc = nextSortOrder(sortField.getAscending(), e.getSuggestedOrder()) ;
newField = new SortField(name, asc);
break;
}
}
}
sortOrder.setFields(new SortField[] {newField});
}
}