getPrefixSpecial(true) instead of
* $event->getPrefixSpecial() as usual. This is due PHP
* is converting "." symbols in variable names during
* submit info "_". $event->getPrefixSpecial optional
* 1st parameter returns correct current Prefix_Special
* for variables being submitted such way (e.g. variable
* name that will be converted by PHP: "users.read_only_id"
* will be submitted as "users_read_only_id".
*
* 2. When using $this->Application->LinkVar on variables submitted
* from the form which contains $Prefix_Special then note 1st item.
* Example: LinkVar($event->getPrefixSpecial(true).'_varname', $event->getPrefixSpecial().'_varname')
*
*/
/**
* Default event handler. Mostly abstract class
*
*/
class kEventHandler extends kBase {
/**
* In case if event should be handled with method, which name differs from
* event name, then it should be specified here.
* key - event name, value - event method
*
* @var Array
* @access protected
*/
protected $eventMethods = Array ();
/**
* Defines mapping vs event names and permission names
*
* @var Array
* @access protected
*/
protected $permMapping = Array ();
public function __construct()
{
parent::__construct();
$this->mapEvents();
$this->mapPermissions();
}
/**
* Define alternative event processing method names
*
* @return void
* @see kEventHandler::$eventMethods
* @access protected
*/
protected function mapEvents()
{
}
/**
* Allows to override standard permission mapping
*
* @return void
* @access protected
* @see kEventHandler::$permMapping
*/
protected function mapPermissions()
{
}
/**
* Returns prefix and special (when present) joined by a "."
*
* @return string
* @access private
*/
public function getPrefixSpecial()
{
throw new Exception('Usage of getPrefixSpecial() method is forbidden in kEventHandler class children. Use $event->getPrefixSpecial(true); instead');
}
/**
* Executes event, specified in $event variable
*
* @param kEvent $event
* @access public
*/
public function processEvent(kEvent $event)
{
$event_name = $event->Name;
if ( array_key_exists($event_name, $this->eventMethods) ) {
$event_name = $this->eventMethods[$event_name];
}
if ( method_exists($this, $event_name) ) {
$this->$event_name($event);
}
else {
throw new Exception('Event ' . $event->Name . ' not implemented in class ' . get_class($this) . '');
}
}
/**
* Sample dummy event
*
* @param kEvent $event
* @return void
* @access protected
*/
protected function OnBuild(kEvent $event)
{
}
/**
* Returns to previous template in opener stack
*
* @param kEvent $event
* @return void
* @access protected
*/
protected function OnGoBack(kEvent $event)
{
$url = $this->Application->RecallVar('export_finish_url');
if ( $url ) {
$this->Application->Redirect('external:' . $url);
}
$event->SetRedirectParam('opener', 'u');
}
/**
* Apply some special processing to object being
* recalled before using it in other events that
* call prepareObject
*
* @param kDBItem|kDBList $object
* @param kEvent $event
* @return void
* @access protected
*/
protected function prepareObject(&$object, kEvent $event)
{
}
/**
* Checks user permission to execute given $event
*
* @param kEvent $event
* @return bool
* @access public
*/
public function CheckPermission(kEvent $event)
{
$perm_helper =& $this->Application->recallObject('PermissionsHelper');
/* @var $perm_helper kPermissionsHelper */
return $perm_helper->CheckEventPermission($event, $this->permMapping);
}
/**
* Occurs, when config was parsed, allows to change config data dynamically
*
* @param kEvent $event
* @return void
* @access protected
*/
protected function OnAfterConfigRead(kEvent $event)
{
}
}