Bug 312859 The list of operator for Chart filter does not provide 30 visible items
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/dialogs/ChartCubeFilterConditionBuilder.java
{
			logger.log( Level.SEVERE, e.getMessage( ), e );
		}
		selValueList = new ArrayList( );
		while ( iter != null && iter.hasNext( ) )
		{
			Object obj = iter.next( );
			if ( obj != null )
			{
				if ( selValueList.indexOf( obj ) < 0 )
				{
					selValueList.add( obj );
				}
			}
		}
		needRefreshList = false;
		return selValueList;
	}
	/**
	 * Gets chart model from UI context under chart builder case or from report
	 * item under property editor case.
	 * 
	 * @param item
	 * @return
	 */
	protected Chart getChartModel( IReportItem item )
	{
		Chart cm;
		if ( context != null && context.getModel( ) != null )
		{