/**
* Delivers the event to the registered event listeners for the type
* specified by the event from the subject.
* If a listeners is an object fire attempts to invoke the methods
* defined by concatenating 'on' with the id of the source object
* and the type of the method. For example if:
* the source id = test
* the type of ONVALUECHANGE
* the method name would be -> onTestChange
* If that method does not exist and the listener is an instanceof
* ZFormElementEventListenerInterface the general handleEvent is
* invoked.
* Finally if the object listener is a string and a callable the
* function is invoked with the event as an argument
*
* @return boolean true no listeners found or the the result of
* invoking the listeners method/function.
*/
public function fire()
{
$listeners = $this->_source->getEventListeners($this->_type);
if ($listeners) {
foreach ($listeners as $listener) {
$methodName = 'on' . ucfirst($this->_source->getID()) . $this->_type;
/**
* @todo check visibility - method_exists() returns true on priv/prot as well
*/
if (is_object($listener)) {
if (is_callable(array($listener, $methodName))) {
return $listener->{$methodName}($this);
} else {
if ($listener instanceof ZFormElementEventListenerInterface) {
return $listener->handleEvent($this);
} else {
throw new ZFormElementException("Event handler not found for ");
}
}
} elseif (is_string($listener) && is_callable($listener)) {
// @todo can this work?
return $listener($this);
}
}
}
return true;
}
