This interface contains all the methods that a class must implement to be
able to handle child trigger events.
Child triggers are setup in the site structure to drill down an element
inheritance hierarchy according to value changes in inputs or cookies. This
will happen both when values are sent by a client and when values are set
by an element.
By registering an instance of a ElementChildTrigger class,
it's possible to only allow the child to be activated according to certain
conditions. This can for instance be used to validate an authentication
session identifier, and only allow the child activation if the identifier
is valid and not expired.
author: Geert Bevin (gbevin[remove] at uwyn dot com) version: $Revision: 3634 $ See Also: ElementSupport.setChildTrigger since: 1.0 |