Bug 120216 Group dialog should be showed even dataset is not set.
- Add a table report item - do not set the data set - try creating a new table group. - An error is shown Expected behavior - As part of the template requirements, we dont want UI to do the validation. User should be able to go and define a group, even if the dataset is not defined.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.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.designer.ui.dialogs;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.birt.report.designer.core.model.views.data.DataSetItemModel;
import org.eclipse.birt.report.designer.internal.ui.dialogs.BaseDialog;
import org.eclipse.birt.report.designer.internal.ui.dnd.InsertInLayoutUtil;
import org.eclipse.birt.report.designer.internal.ui.util.DataSetManager;
import org.eclipse.birt.report.designer.internal.ui.util.ExceptionHandler;
import org.eclipse.birt.report.designer.internal.ui.util.UIUtil;
import org.eclipse.birt.report.designer.internal.ui.views.attributes.page.FilterHandleProvider;
import org.eclipse.birt.report.designer.internal.ui.views.attributes.page.FormPage;
import org.eclipse.birt.report.designer.internal.ui.views.attributes.page.SortingHandleProvider;
import org.eclipse.birt.report.designer.internal.ui.views.attributes.widget.Spinner;
import org.eclipse.birt.report.designer.nls.Messages;
import org.eclipse.birt.report.designer.ui.newelement.DesignElementFactory;