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
singleDataSet.setText( RADIO_SINGLE );
		singleDataSet.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				refreshValueTable( );
				updateButtons( );
			}
		} );
		multiDataSet = new Button( composite, SWT.RADIO );
		multiDataSet.setText( RADIO_MULTIPLE );
		multiDataSet.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				refreshValueTable( );
				updateButtons( );
			}
		} );
	}
	private void createDynamicParamsPart( Composite parent )
	{
		Composite comp = new Composite( parent, SWT.NULL );
		comp.setLayout( UIUtil.createGridLayoutWithoutMargin( ) );
		comp.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		Label label = new Label( comp, SWT.NULL );
		label.setText( LABEL_PARAMETERS );
		table = new Table( comp, SWT.FULL_SELECTION
				| SWT.HIDE_SELECTION
				| SWT.BORDER );
		GridData data = new GridData( GridData.FILL_HORIZONTAL );
		data.heightHint = 100;