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<?php
/**
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2009, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2009, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs.controller
* @since CakePHP(tm) v TBD
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* Handler for Controller::$components
*
* @package cake
* @subpackage cake.cake.libs.controller
* @link http://book.cakephp.org/view/62/Components
*/
class Component extends Object {
/**
* Contains various controller variable information (plugin, name, base).
*
* @var object
* @access private
*/
var $__controllerVars = array('plugin' => null, 'name' => null, 'base' => null);
/**
* List of loaded components.
*
* @var object
* @access protected
*/
var $_loaded = array();
/**
* List of components attached directly to the controller, which callbacks
* should be executed on.
*
* @var object
* @access protected
*/
var $_primary = array();
/**
* Settings for loaded components.
*
* @var array
* @access private
*/
var $__settings = array();
/**
* Used to initialize the components for current controller.
*
* @param object $controller Controller with components to load
* @return void
* @access public
*/
function init(&$controller) {
if (!is_array($controller->components)) {
return;
}
$this->__controllerVars = array(
'plugin' => $controller->plugin, 'name' => $controller->name,
'base' => $controller->base
);
$this->_loadComponents($controller);
}
/**
* Called before the Controller::beforeFilter().
*
* @param object $controller Controller with components to initialize
* @return void
* @access public
* @link http://book.cakephp.org/view/65/MVC-Class-Access-Within-Components
*/
function initialize(&$controller) {
foreach (array_keys($this->_loaded) as $name) {
$component =& $this->_loaded[$name];
if (method_exists($component,'initialize') && $component->enabled === true) {
$settings = array();
if (isset($this->__settings[$name])) {
$settings = $this->__settings[$name];
}
$component->initialize($controller, $settings);
}
}
}
/**
* Called after the Controller::beforeFilter() and before the controller action
*
* @param object $controller Controller with components to startup
* @return void
* @access public
* @link http://book.cakephp.org/view/65/MVC-Class-Access-Within-Components
*/
function startup(&$controller) {
foreach ($this->_primary as $name) {
$component =& $this->_loaded[$name];
if ($component->enabled === true && method_exists($component, 'startup')) {
$component->startup($controller);
}
}
}
/**
* Called after the Controller::beforeRender(), after the view class is loaded, and before the
* Controller::render()
*
* @param object $controller Controller with components to beforeRender
* @return void
* @access public
*/
function beforeRender(&$controller) {
foreach ($this->_primary as $name) {
$component =& $this->_loaded[$name];
if ($component->enabled === true && method_exists($component,'beforeRender')) {
$component->beforeRender($controller);
}
}
}
/**
* Called before Controller::redirect().
*
* @param object $controller Controller with components to beforeRedirect
* @return void
* @access public
*/
function beforeRedirect(&$controller, $url, $status = null, $exit = true) {
$response = array();
foreach ($this->_primary as $name) {
$component =& $this->_loaded[$name];
if ($component->enabled === true && method_exists($component, 'beforeRedirect')) {
$resp = $component->beforeRedirect($controller, $url, $status, $exit);
if ($resp === false) {
return false;
}
$response[] = $resp;
}
}
return $response;
}
/**
* Called after Controller::render() and before the output is printed to the browser.
*
* @param object $controller Controller with components to shutdown
* @return void
* @access public
*/
function shutdown(&$controller) {
foreach ($this->_primary as $name) {
$component =& $this->_loaded[$name];
if (method_exists($component,'shutdown') && $component->enabled === true) {
$component->shutdown($controller);
}
}
}
/**
* Loads components used by this component.
*
* @param object $object Object with a Components array
* @param object $parent the parent of the current object
* @return void
* @access protected
*/
function _loadComponents(&$object, $parent = null) {
$base = $this->__controllerVars['base'];
$normal = Set::normalize($object->components);
foreach ((array)$normal as $component => $config) {
$plugin = isset($this->__controllerVars['plugin']) ? $this->__controllerVars['plugin'] . '.' : null;
list($plugin, $component) = pluginSplit($component, true, $plugin);
$componentCn = $component . 'Component';
if (!class_exists($componentCn)) {
if (is_null($plugin) || !App::import('Component', $plugin . $component)) {
if (!App::import('Component', $component)) {
$this->cakeError('missingComponentFile', array(array(
'className' => $this->__controllerVars['name'],
'component' => $component,
'file' => Inflector::underscore($component) . '.php',
'base' => $base,
'code' => 500
)));
return false;
}
}
if (!class_exists($componentCn)) {
$this->cakeError('missingComponentClass', array(array(
'className' => $this->__controllerVars['name'],
'component' => $component,
'file' => Inflector::underscore($component) . '.php',
'base' => $base,
'code' => 500
)));
return false;
}
}
if ($parent === null) {
$this->_primary[] = $component;
}
if (isset($this->_loaded[$component])) {
$object->{$component} =& $this->_loaded[$component];
if (!empty($config) && isset($this->__settings[$component])) {
$this->__settings[$component] = array_merge($this->__settings[$component], $config);
} elseif (!empty($config)) {
$this->__settings[$component] = $config;
}
} else {
if ($componentCn === 'SessionComponent') {
$object->{$component} =& new $componentCn($base);
} else {
$object->{$component} =& new $componentCn();
}
$object->{$component}->enabled = true;
$this->_loaded[$component] =& $object->{$component};
if (!empty($config)) {
$this->__settings[$component] = $config;
}
}
if (isset($object->{$component}->components) && is_array($object->{$component}->components) && (!isset($object->{$component}->{$parent}))) {
$this->_loadComponents($object->{$component}, $component);
}
}
}
}
?>
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