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
}
		}
		updateButtons( );
	}
	/**
	 * Sets the model input.
	 * 
	 * @param input
	 */
	public void setInput( Object inputHandle )
	{
		if ( inputHandle instanceof FilterConditionElementHandle )
		{
			this.inputHandle = (FilterConditionElementHandle) inputHandle;
		}
		else
		{
			this.inputHandle = null;
		}
	}
	private void refreshList( )
	{
		if ( refreshItems )
		{
			ArrayList<String> finalItems = new ArrayList<String>( 10 );
			for ( int n = 0; n < actions.length; n++ )
			{
				finalItems.add( actions[n] );
			}
			if ( currentItem != null )