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<?php
/**
* File containing the abstract ezcGraphChartSingleDataContainer class
*
* @package Graph
* @version //autogentag//
* @copyright Copyright (C) 2005-2008 eZ systems as. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
*/
/**
* Container class for datasets, which ensures, that only one dataset is used.
* Needed for pie charts which can only display one dataset.
*
* @version //autogentag//
* @package Graph
*/
class ezcGraphChartSingleDataContainer extends ezcGraphChartDataContainer
{
/**
* Adds a dataset to the charts data
*
* @param string $name
* @param ezcGraphDataSet $dataSet
* @throws ezcGraphTooManyDataSetExceptions
* If too many datasets are created
* @return ezcGraphDataSet
*/
protected function addDataSet( $name, ezcGraphDataSet $dataSet )
{
if ( count( $this->data ) >= 1 &&
!isset( $this->data[$name] ) )
{
throw new ezcGraphTooManyDataSetsExceptions( $name );
}
else
{
parent::addDataSet( $name, $dataSet );
// Resette palette color counter
$this->chart->palette->resetColorCounter();
// Colorize each data element
foreach ( $this->data[$name] as $label => $value )
{
$this->data[$name]->color[$label] = $this->chart->palette->dataSetColor;
}
}
}
}
?>
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