/**
* Invoke a command by calling all the registered callbacks
*
* @param string|KCommandInterface $command The command name or a KCommandInterface object
* @param array|Traversable $attributes An associative array or a Traversable object
* @param KObjectInterface $subject The command subject
* @return mixed|null If a callback break, returns the break condition. NULL otherwise.
*/
public function invokeCallbacks($command, $attributes = null, $subject = null)
{
//Make sure we have an command object
if (!$command instanceof KCommandInterface) {
if ($attributes instanceof KCommandInterface) {
$name = $command;
$command = $attributes;
$command->setName($name);
} else {
$command = new KCommand($command, $attributes, $subject);
}
}
foreach ($this->getCommandCallbacks($command->getName()) as $handler) {
$method = $handler['method'];
$params = $handler['params'];
if (is_string($method)) {
$result = $this->invokeCommandCallback($method, $command->append($params));
} else {
$result = $method($command->append($params));
}
if ($result !== null && $result === $this->getBreakCondition()) {
return $result;
}
}
}
/**
* Constructor.
*
* @param mixed $dispatcher A dispatcher
* @param array $config An optional KConfig object with configuration options.
*
* @return void
*/
public function __construct($dispatcher = null, $config = array())
{
$config = new KConfig($config);
parent::__construct($config);
$this->_name = $config->name;
KService::get('plg:contentfilter.chain')->addFilter($this);
}
/**
* Initializes the options for the object
*
* Called from {@link __construct()} as a first step of object instantiation.
*
* @param object An optional KConfig object with configuration options
* @return void
*/
protected function _initialize(KConfig $config)
{
$config->append(array(
'dispatcher' => KFactory::get('koowa:event.dispatcher')
));
parent::_initialize($config);
}
/**
* Command handler
*
* @param string The command name
* @param object The command context
* @return boolean Can return both true or false.
*/
public function execute($name, KCommandContext $context)
{
$parts = explode('.', $name);
//Check the token
if ($parts[0] == 'before' && $context->caller->isDispatched()) {
if (!$this->checkToken()) {
throw new KControllerException('Invalid token or session time-out', KHttpResponse::FORBIDDEN);
}
}
//Execute the command
if (parent::execute($name, $context) == false) {
throw new KControllerException(ucfirst($context->action) . ' action not allowed', KHttpResponse::FORBIDDEN);
}
return true;
}
/**
* Initializes the options for the object
*
* Called from {@link __construct()} as a first step of object instantiation.
*
* @param object An optional KConfig object with configuration options
* @return void
*/
protected function _initialize(KConfig $config)
{
$config->append(array('dispatcher' => $this->getService('koowa:event.dispatcher')));
parent::_initialize($config);
}
/**
* Searches a repository to see if it behave as.
*
* If a method has the form of is[Behavior Name] it check if the repository behave
*
* @param string $method The mising method
* @param array $args Method arguments
*
* @return bool|mixed
*/
public function __call($method, $args)
{
// If the method is of the form is[Bahavior] handle it.
$parts = KInflector::explode($method);
if ($parts[0] == 'is' && isset($parts[1])) {
if ($this->hasBehavior(strtolower($parts[1]))) {
return true;
}
return false;
}
return parent::__call($method, $args);
}
/**
* Initializes the options for the object
*
* Called from {@link __construct()} as a first step of object instantiation.
*
* @param object An optional KConfig object with configuration options
* @return void
*/
protected function _initialize(KConfig $config)
{
$config->append(array('event_dispatcher' => null));
parent::_initialize($config);
}
