====== EVENTS ======

===== Tipo =====
  * Etiqueta

===== Descripción =====

Los eventos son acciones disparadas automáticamente desde un formulario ([[waine:asl:tag:FORM]]) ante una interacción del usuario. La etiqueta ([[waine:asl:tag:EVENTS]]) es un contenedor de eventos. Los eventos admitidos para un formulario son:
  * [[waine:asl:tag:ONLOAD]]
  * [[waine:asl:tag:ONUNLOAD]]
  * [[waine:asl:tag:BEFORERETRIEVE]]
  * [[waine:asl:tag:AFTERRETRIEVE]]
  * [[waine:asl:tag:BEFOREINSERT]]
  * [[waine:asl:tag:AFTERINSERT]]
  * [[waine:asl:tag:BEFOREUPDATE]]
  * [[waine:asl:tag:AFTERUPDATE]]
  * [[waine:asl:tag:BEFOREDELETE]]
  * [[waine:asl:tag:AFTERDELETE]]

===== Ejemplos =====
<code>

<form id="frm_class" source="Class" caption="Categories">     

   <fields>
      <key source="pk"/>
      <field source="descr" caption="Description" type="string" len="40" maxlen="80" msg="Empty description"/>
   </fields>   

   <events>
       <beforedelete>            
	  <action type="php">
	     <code>return 0;<code>
             <msg>You can not delete this field</msg>                  
          </action>                       
       </beforedelete>   
   </events>                      
                     
</form>
   
</code>

===== DTD =====
<code>

<!ELEMENT events (onload?,onunload?,beforeretrieve?,afterretrieve?,beforeinsert?,afterinsert?,beforeupdate?,afterupdate?,beforedelete?,afterdelete?)>

</code>

===== Notas =====