/**
* Loads helpers, with their dependencies.
*
* @param array $loaded List of helpers that are already loaded.
* @param array $helpers List of helpers to load.
* @return array
* @access protected
*/
function &_loadHelpers(&$loaded, $helpers)
{
static $tags;
$helpers[] = 'Session';
if (empty($tags)) {
$helperTags = new Helper();
$tags = $helperTags->loadConfig();
}
foreach ($helpers as $helper) {
$parts = preg_split('/\\/|\\./', $helper);
if (count($parts) === 1) {
$plugin = $this->plugin;
} else {
$plugin = Inflector::underscore($parts['0']);
$helper = $parts[count($parts) - 1];
}
$helperCn = $helper . 'Helper';
if (in_array($helper, array_keys($loaded)) !== true) {
if (!class_exists($helperCn)) {
if (is_null($plugin) || !loadPluginHelper($plugin, $helper)) {
if (!loadHelper($helper)) {
$this->cakeError('missingHelperFile', array(array('helper' => $helper, 'file' => Inflector::underscore($helper) . '.php', 'base' => $this->base)));
exit;
}
}
if (!class_exists($helperCn)) {
$this->cakeError('missingHelperClass', array(array('helper' => $helper, 'file' => Inflector::underscore($helper) . '.php', 'base' => $this->base)));
exit;
}
}
$camelBackedHelper = Inflector::variable($helper);
${$camelBackedHelper} =& new $helperCn();
${$camelBackedHelper}->view =& $this;
${$camelBackedHelper}->tags = $tags;
$vars = array('base', 'webroot', 'here', 'params', 'action', 'data', 'themeWeb', 'plugin');
$c = count($vars);
for ($j = 0; $j < $c; $j++) {
${$camelBackedHelper}->{$vars[$j]} = $this->{$vars[$j]};
}
if (!empty($this->validationErrors)) {
${$camelBackedHelper}->validationErrors = $this->validationErrors;
}
$loaded[$helper] =& ${$camelBackedHelper};
if (isset(${$camelBackedHelper}->helpers) && is_array(${$camelBackedHelper}->helpers)) {
$loaded =& $this->_loadHelpers($loaded, ${$camelBackedHelper}->helpers);
}
}
}
return $loaded;
}
/**
* Load dependencies for given element (controller/component/helper)
*
* @param string $element Element to load dependency for
* @access private
*/
function __loadDependencies($element)
{
switch (low($element)) {
case 'behavior':
loadModel(null);
loadBehavior(null);
break;
case 'controller':
loadController(null);
break;
case 'component':
loadComponent(null);
break;
case 'helper':
uses('view' . DS . 'helper');
loadHelper(null);
break;
case 'model':
loadModel(null);
break;
}
}
/**
* Loads a plugin's helper
*
* @param string $plugin Name of plugin
* @param string $helper Name of helper to load
* @return boolean Success
* @deprecated
*/
function loadPluginHelper($plugin, $helper)
{
loadHelper(null);
if (!class_exists($helper . 'Helper')) {
$helper = Inflector::underscore($helper);
$file = APP . 'plugins' . DS . $plugin . DS . 'views' . DS . 'helpers' . DS . $helper . '.php';
if (file_exists($file)) {
require $file;
return true;
} else {
return false;
}
}
return true;
}
