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<?php
/**
* @package Habari
*
*/
/**
* A base class handler for URL-based actions. All ActionHandlers must
* extend this class for the Controller to call their actions.
*
*/
class ActionHandler
{
/**
* Name of action to trigger
*
* @var string
* @see act()
*/
public $action = '';
/**
* Internal array of handler variables (state info)
*
* @var SuperGlobal
*/
public $handler_vars = null;
/**
* Storage for the theme used, if created
*
* @var Theme $theme
*/
public $theme = null;
/**
* All handlers must implement act() to conform to handler API.
* This is the default implementation of act(), which attempts
* to call a class member method of $this->act_$action(). Any
* subclass is welcome to override this default implementation.
*
* @param string $action the action that was in the URL rule
*/
public function act( $action )
{
if ( null === $this->handler_vars ) {
$this->handler_vars = new SuperGlobal( array() );
}
$this->action = $action;
$action_method = 'act_' . $action;
$before_action_method = 'before_' . $action_method;
$after_action_method = 'after_' . $action_method;
if ( method_exists( $this, $action_method ) ) {
if ( method_exists( $this, $before_action_method ) ) {
$this->$before_action_method();
}
/**
* Plugin action to allow plugins to execute before a certain
* action is triggered
*
* @see ActionHandler::$action
* @action before_act_{$action}
*/
Plugins::act( $before_action_method, $this );
$this->$action_method();
/**
* Plugin action to allow plugins to execute after a certain
* action is triggered
*
* @see ActionHandler::$action
* @action before_act_{$action}
*/
Plugins::act( $after_action_method );
if ( method_exists( $this, $after_action_method ) ) {
$this->$after_action_method();
}
}
}
/**
* Helper method to convert calls to $handler->my_action()
* to $handler->act('my_action');
*
* @param string $function function name
* @param array $args function arguments
*/
public function __call( $function, $args )
{
return $this->act( $function );
}
/**
* Helper method to allow RewriteRules to send a redirect. The method will
* redirect to the build_str of the RewriteRule if matched.
*/
public function act_redirect()
{
$vars = isset( $_SERVER['QUERY_STRING'] ) ? Utils::get_params( $_SERVER['QUERY_STRING'] ) : array();
Utils::redirect( URL::get( null, $vars ) );
}
/**
* Load the active theme and create a new Theme instance.
* Also, assign the request variables.
*/
public function setup_theme()
{
$this->theme = Themes::create();
$this->theme->assign( 'matched_rule', URL::get_matched_rule() );
$request = new StdClass();
foreach ( URL::get_active_rules() as $rule ) {
$request->{$rule->name} = false;
}
$request->{$this->theme->matched_rule->name} = true;
$this->theme->assign( 'request', $request );
}
}
?>
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