Bug 120503 Cascading Parameter can not drop into layout
Details: Cascading Parameter can not drop into layout Step: 1.Open a report design and Create a Sample Data Source and data set by "select * from CLASSICMODELS.CUSTOMERS" 2.New a cascading parameter and create CUSTOMERSNUMBER and CUSTOMERSNAME in parameter named number and name. Press OK 3.Drop parameter name into layout. Actual results: The parameter in Cascading Parameter Group can not drop to layout
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
if ( fontSize.equals( DesignChoiceConstants.FONT_SIZE_LARGER ) )
			{
				return getLargerFontSize( handle.getContainer( ) );
			}
			else if ( fontSize.equals( DesignChoiceConstants.FONT_SIZE_SMALLER ) )
			{
				return getSmallerFontSize( handle.getContainer( ) );
			}
			else
			{
				return fontSize;
			}
		}
		else
		{
			return DesignChoiceConstants.FONT_SIZE_MEDIUM;
		}
	}
	private static String getLargerFontSize( DesignElementHandle handle )
	{
		if ( !( handle instanceof ReportItemHandle ) )
		{
			if ( handle instanceof ModuleHandle )
			{
				for ( int i = 0; i < DesignerConstants.fontSizes.length - 1; i++ )
				{
					if ( DesignChoiceConstants.FONT_SIZE_MEDIUM
							.equals( DesignerConstants.fontSizes[i][0] ) )
					{
						return DesignerConstants.fontSizes[i + 1][0];