Bug 120218 Right click menu option to apply theme.
We should support the following right click menu. -- User right clicks int he report design layout area. -- The following menu items needs to be supported Theme --> Apply Theme -->Theme1 -->Theme2 ( similar to Apply style menu option )
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
{
			if ( decPlaces > 100 )
			{
				decPlaces = 100;
			}
			int quotient = decPlaces / 10;
			int remainder = decPlaces % 10;
			StringBuffer s = new StringBuffer( 100 );
			for ( int i = 0; i < quotient; i++ )
			{
				s.append( defaultDecs );
			}
			s.append( defaultDecs.substring( 0, remainder ) );
			decStr = s.toString( );
		}
		return decStr;
	}
	/**
	 * @param transferSource
	 * @return true if parameter is parameter group.
	 */
	public static boolean isParameterGroup( Object transferSource )
	{
		return ( transferSource instanceof IDesignElement && ( (IDesignElement) transferSource ).getDefn( )
				.getName( )
				.equals( ReportDesignConstants.PARAMETER_GROUP_ELEMENT ) );
	}
	/**
	 * @return Alphabetically sortted styles list.
	 */