Getter, setter si evenimente in PHP

Pentru folosirea setterilor si getterilor :
- se declara proprietatea private
- se declara o functie cu numele "get".nume_properietate
- se declara o functie cu numele "set".nume_properietate

Pentru folosirea evenimentelor
- se creaza o innstanta a clasei
- evenimentele sunt de forma "on".numefunctie = "nume_functie_utilizator"
- functia trebuie declarata private
- (!) valoarea returnata de eveniment este trimisa ca ultim parametru pentru functie

Cod:

<?php class TException extends Exception { public function __construct ( $errorCode, $errorDescription ) { echo htmlspecialchars("<" . $errorCode . "> " . $errorDescription ); } } class generic { # array cu evenimentele private $e = array ( ); public function addEventListener ( $property, $value ) { if ( strpos($property, "on") === FALSE ) throw new TException("addEventListener", "sintaxa eveniment incorecta : " . $property ); if ( is_array($value) ) { $object = each ( $value ); $method = $object["value"]; $object = $object["key"]; if ( ! method_exists($object, $method) ) throw new TException("addEventListener", "metoda '". $method ."' nu exista ( instanta obiectului : '". $object ." )"); } else if ( ! function_exists($value) ) throw new TException("addEventListener", "functia '". $value ."' nu exista"); $this->e[$property] = $value; } // // removeEventListener ? // public function eventExists ( $eventName ) { return ( isset($this->e[$eventName] ) ) ? 1 : 0; } public function getEventListener( $eventName ) { return $this->e[$eventName]; } public function callEvent ( $eventName ) { if ( $this->eventExists($eventName) ) { if ( func_num_args() > 1 ) { $args = func_get_args(); array_shift($args); return call_user_func_array( $this->getEventListener($eventName), $args ) ; } else return call_user_func( $this->getEventListener($eventName) ); } } public function __get ( $a ) { $getter = "get" . $a; if ( method_exists($this, $getter) ) return call_user_func( array(&$this,$getter) ); else throw new TException ( "__get", "proprietatea $a nu are getter"); } public function __set ( $a, $v ) { $setter = "set" . $a; if ( strpos($a,"on") !== FALSE ) $this->addEventListener($a, $v); elseif ( method_exists($this, $setter) ) return call_user_func( array(&$this,$setter), $v ); else throw new TException ( "__set", "proprietatea $a nu are setter"); } public function __call ( $f, $a ) { $eventResult = $this->callEvent("on".$f, $a); $a[count($a)+1] = $eventResult; return call_user_func_array( array( &$this,"_".$f ), $a ) ; } } ?>