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Event.php
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Event.php
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<?php
/**
* User: Paris Theofanidis
* Date: 05/06/16
* Time: 13:02
*/
namespace ptheofan\statemachine;
use ptheofan\statemachine\interfaces\StateMachineContext;
use ptheofan\statemachine\interfaces\StateMachineEvent;
use ptheofan\statemachine\interfaces\StateMachineState;
use SimpleXMLElement;
use yii\base\BaseObject;
/**
* Class Event
*
* @package ptheofan\statemachine
*/
class Event extends BaseObject implements StateMachineEvent
{
/**
* @var string
*/
protected $label;
/**
* @var string
*/
protected $target;
/**
* @var StateMachine
*/
protected $sm;
/**
* @var State - the state the event belongs to
*/
protected $state;
/**
* @var array
*/
protected $data;
/**
* @var Condition[]
*/
protected $conditions = [];
/**
* @return string
*/
public function getLabel()
{
return $this->label;
}
/**
* @return string
*/
public function getTarget()
{
return $this->target;
}
/**
* @return State
* @throws exceptions\InvalidSchemaException
* @throws exceptions\StateMachineNotFoundException
* @throws exceptions\StateNotFoundException
*/
public function getTargetState()
{
return $this->sm->getState($this->target);
}
/**
* @return State
*/
public function getState()
{
return $this->state;
}
/**
* @param StateMachineContext $context
* @return bool
*/
public function isValid(StateMachineContext $context)
{
foreach ($this->conditions as $condition) {
if (!$condition->isValid($context)) {
return false;
}
}
return true;
}
/**
* @return bool
*/
public function isRefresh()
{
return $this->getTarget() === $this->getState()->getValue();
}
/**
* @deprecated replaced with getDataValue
* @param string $name
* @param mixed $default
* @return string
*/
public function getValue($name, $default)
{
return (array_key_exists($name, $this->data)) ? $this->data[$name] : $default;
}
/**
* @param string $name
* @param mixed $default
* @return string
*/
public function getDataValue($name, $default)
{
return (array_key_exists($name, $this->data)) ? $this->data[$name] : $default;
}
/**
* @param SimpleXMLElement $xml
* @param StateMachine $sm
* @param StateMachineState $state
* @return static
* @throws \yii\base\InvalidConfigException
* @throws exceptions\InvalidSchemaException
*/
public static function fromXml(SimpleXMLElement $xml, StateMachine $sm, StateMachineState $state)
{
$rVal = new static();
$rVal->sm = $sm;
$rVal->state = $state;
$rVal->target = (string)$xml->attributes()->target;
$rVal->label = (string)$xml->attributes()->label;
$rVal->data = [];
foreach ($xml->attributes() as $k => $v) {
if (!in_array($k, ['target', 'label'])) {
$rVal->data[$k] = (string)$v;
}
}
if (!empty($xml->conditions)) {
foreach ($xml->conditions->children() as $condition) {
$rVal->conditions[] = Condition::fromXml($condition, $sm);
}
}
return $rVal;
}
}