/**
* Change a capability
*
* @param stdClass $marker
* @param string $name
* @param mixed $value
* @return Capabilities Fluent interface
* @throws Exception\InvalidArgumentException
*/
protected function setCapability(stdClass $marker, $name, $value)
{
if ($this->marker !== $marker) {
throw new Exception\InvalidArgumentException('Invalid marker');
}
$property = '_' . $name;
if ($this->{$property} !== $value) {
$this->{$property} = $value;
// trigger event
if ($this->storage instanceof EventsCapableInterface) {
$this->storage->events()->trigger('capability', $this->storage, new ArrayObject(array($name => $value)));
}
}
return $this;
}
