Bug 390669 [Accessibility]Press 'Tab' doesn't focus on the next report item when adding relative period aggregation.
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/dialogs/CrosstabBindingDialogHelper.java
/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http:www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/
package org.eclipse.birt.report.item.crosstab.internal.ui.dialogs;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import org.eclipse.birt.core.data.ExpressionUtil;
import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.data.engine.api.IBinding;
import org.eclipse.birt.data.engine.api.aggregation.AggregationManager;
import org.eclipse.birt.data.engine.api.aggregation.IAggrFunction;
import org.eclipse.birt.data.engine.api.aggregation.IParameterDefn;
import org.eclipse.birt.report.data.adapter.api.AdapterException;
import org.eclipse.birt.report.data.adapter.api.CubeQueryUtil;
import org.eclipse.birt.report.data.adapter.api.DataAdapterUtil;