Bug 180864 Change Allow Null option in Cascading Group.[0705]
Description: Change Allow Null option in Cascading Group. Build number:2.2.0.v20070404 Steps to reproduce: 1. New a cascading group and add sub parameter. Expected result: Is Required option in cascading group definition dialog. Actual result: Allow null value option in Cascading Group definition dialog Error log:N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.events.VerifyListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import com.ibm.icu.util.ULocale;
/**
 * Cascading Parameter Dialog.
 */
public class CascadingParametersDialog extends BaseDialog
{
	private static final String LABEL_PARAMTER_PROMPT_TEXT = Messages.getString( "CascadingParametersDialog.Label.parameterPromptText" ); 
	private static final String LABEL_VALUES = Messages.getString( "CascadingParametersDialog.Label.values" ); 
	private static final String LABEL_GROUP_GENERAL = Messages.getString( "CascadingParametersDialog.Label.group.general" ); 
	private static final String LABEL_CASCADING_PARAMETER_NAME = Messages.getString( "CascadingParametersDialog.Label.cascadingParam.name" ); 
	private static final String LABEL_GROUP_PROMPT_TEXT = Messages.getString( "CascadingParametersDialog.Label.groupPromptText" );