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
{
				return OPERATOR[i][0];
			}
		}
		return ""; 
	}
	/**
	 * Returns the index for given operator value in the operator list.
	 * 
	 * @param value
	 */
	protected static int getIndexForOperatorValue( String value )
	{
		for ( int i = 0; i < OPERATOR.length; i++ )
		{
			if ( OPERATOR[i][1].equals( value ) )
			{
				return i;
			}
		}
		return 0;
	}
	protected FilterConditionElementHandle inputHandle;
	protected Combo expression, operator;
	protected Button addBtn, editBtn, delBtn, delAllBtn;
	protected Combo expressionValue1, expressionValue2, addExpressionValue;
	protected Composite valueListComposite;
	protected Label andLable;
	protected DesignElementHandle designHandle;
	protected static final String VALUE_OF_THIS_DATA_ITEM = Messages.getString( "FilterConditionBuilder.choice.ValueOfThisDataItem" );