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 | Getter, setter si evenimente PHP |  |
 Trimis: 19/07/2007 16:52 |
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| Ad_Infinitum |
| Administrator |
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| Data inscrierii: 23/Iun/2007 |
| Mesaje: 212 |
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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 utilizarea 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
| Citat: |
<?php
/**
* @file generic.php
* @version 1.3
* @author Kaminsky Andrei < kaminsky.andrei@yahoo.com >
*/
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 ) ;
}
}
?>
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