* $graph = new ezcGraphLineChart(); * $graph->data['example'] = new ezcGraphArrayDataSet( array( * 'Foo' => 23, * 'Bar' => 42, * ) ); * * // Set color for all data points in this data set * $graph->data['example']->color = '#a40000'; * * // Set different color for one special datapoint * $graph->data['example']->color['Foo'] = '#2e3436'; * * $graph->render( 400, 200, 'test.svg' ); * * * @version 1.5 * @package Graph */ abstract class ezcGraphDataSetProperty implements ArrayAccess { /** * Default value for this property * * @var mixed */ protected $defaultValue; /** * Contains specified values for single dataset elements * * @var array */ protected $dataValue; /** * Contains a reference to the dataset to check for availability of data * keys * * @var ezcGraphDataSet */ protected $dataset; /** * Abstract method to contain the check for validity of the value * * @param mixed $value * @return void */ abstract protected function checkValue( &$value ); /** * Constructor * * @param ezcGraphDataSet $dataset * @ignore * @return void */ public function __construct( ezcGraphDataSet $dataset ) { $this->dataset = $dataset; } /** * Set the default value for this property * * @param string $name Property name * @param mixed $value Property value * @return void */ public function __set( $name, $value ) { if ( $name === 'default' && $this->checkValue( $value ) ) { $this->defaultValue = $value; } } /** * Get the default value for this property * * @param string $name Property name * @return mixed */ public function __get( $name ) { if ( $name === 'default' ) { return $this->defaultValue; } } /** * Returns if an option exists. * Allows isset() using ArrayAccess. * * @param string $key The name of the option to get. * @return bool Wether the option exists. */ final public function offsetExists( $key ) { return isset( $this->dataset[$key] ); } /** * Returns an option value. * Get an option value by ArrayAccess. * * @param string $key The name of the option to get. * @return mixed The option value. * * @throws ezcBasePropertyNotFoundException * If a the value for the property options is not an instance of */ final public function offsetGet( $key ) { if ( isset( $this->dataValue[$key] ) ) { return $this->dataValue[$key]; } elseif ( isset( $this->dataset[$key] ) ) { return $this->defaultValue; } else { throw new ezcGraphNoSuchDataException( $key ); } } /** * Set an option. * Sets an option using ArrayAccess. * * @param string $key The option to set. * @param mixed $value The value for the option. * @return void * * @throws ezcBasePropertyNotFoundException * If a the value for the property options is not an instance of * @throws ezcBaseValueException * If a the value for a property is out of range. */ public function offsetSet( $key, $value ) { if ( isset( $this->dataset[$key] ) && $this->checkValue( $value ) ) { $this->dataValue[$key] = $value; } else { throw new ezcGraphNoSuchDataException( $key ); } } /** * Unset an option. * Unsets an option using ArrayAccess. * * @param string $key The options to unset. * @return void * * @throws ezcBasePropertyNotFoundException * If a the value for the property options is not an instance of * @throws ezcBaseValueException * If a the value for a property is out of range. */ final public function offsetUnset( $key ) { if ( isset( $this->dataset[$key] ) ) { unset( $this->dataValue[$key] ); } else { throw new ezcGraphNoSuchDataException( $key ); } } } ?>