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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/**
* Class for rendering items using their positions
*
* @package Component.Classes.Renderers
*/
class ItemRenderer extends PositionRenderer {
/**
* The item to render
*
* @var Item The item to render
* @since 2.0
*/
protected $_item;
/**
* Render the item using the give layout
*
* @param string $layout The layout to use for rendering the items
* @param array $args The list of variables to pass on to the layout
*
* @return string The html code rendered
*
* @since 2.0
*/
public function render($layout, $args = array()) {
// set item
$this->_item = isset($args['item']) ? $args['item'] : null;
// init vars
$render = true;
$result = '';
// trigger beforedisplay event
if ($this->_item) {
$this->app->event->dispatcher->notify($this->app->event->create($this->_item, 'item:beforedisplay', array('render' => &$render, 'html' => &$result)));
}
// render layout
if ($render) {
$result .= parent::render($layout, $args);
// trigger afterdisplay event
if ($this->_item) {
$this->app->event->dispatcher->notify($this->app->event->create($this->_item, 'item:afterdisplay', array('html' => &$result)));
}
}
return $result;
}
/**
* Check if a position generates some output
*
* @param string $position The name of the position to check
*
* @return boolean If the position generates some kind of output
*
* @since 2.0
*/
public function checkPosition($position) {
foreach ($this->_getConfigPosition($position) as $index => $data) {
if ($element = $this->_item->getElement($data['element'])) {
$data['_layout'] = $this->_layout;
$data['_position'] = $position;
$data['_index'] = $index;
if ($element->canAccess() && $element->hasValue($this->app->data->create($data))) {
// trigger elements beforedisplay event
$render = true;
$this->app->event->dispatcher->notify($this->app->event->create($this->_item, 'element:beforedisplay', array('render' => &$render, 'element' => $element, 'params' => $data)));
if ($render) {
return true;
}
}
}
}
return false;
}
/**
* Render the output of the position
*
* @param string $position The name of the position to render
* @param array $args The list of arguments to pass on to the layout
*
* @return string The html code generated
*
* @since 2.0
*/
public function renderPosition($position, $args = array()) {
// init vars
$elements = array();
$output = array();
// get style
$style = isset($args['style']) ? $args['style'] : 'default';
// store layout
$layout = $this->_layout;
// render elements
foreach ($this->_getConfigPosition($position) as $index => $data) {
if ($element = $this->_item->getElement($data['element'])) {
if (!$element->canAccess()) {
continue;
}
$data['_layout'] = $this->_layout;
$data['_position'] = $position;
$data['_index'] = $index;
// set params
$params = array_merge($data, $args);
// check value
if ($element->hasValue($this->app->data->create($params))) {
// trigger elements beforedisplay event
$render = true;
$this->app->event->dispatcher->notify($this->app->event->create($this->_item, 'element:beforedisplay', array('render' => &$render, 'element' => $element, 'params' => $params)));
if ($render) {
$elements[] = compact('element', 'params');
}
}
}
}
foreach ($elements as $i => $data) {
$params = array_merge(array('first' => ($i == 0), 'last' => ($i == count($elements)-1)), $data['params']);
$output[$i] = parent::render("element.$style", array('element' => $data['element'], 'params' => $params));
// trigger elements afterdisplay event
$this->app->event->dispatcher->notify($this->app->event->create($this->_item, 'element:afterdisplay', array('html' => &$output[$i], 'element' => $data['element'], 'params' => $params)));
}
// restore layout
$this->_layout = $layout;
return implode("\n", $output);
}
/**
* Get the configuration for the given position
*
* @param string $position The name of the position
*
* @return JSONData The config for this position
*
* @since 2.0
*/
protected function _getConfigPosition($position) {
$config = $this->getConfig('item')->get($this->_item->getApplication()->getGroup().'.'.$this->_item->getType()->id.'.'.$this->_layout);
return $config && isset($config[$position]) ? $config[$position] : array();
}
}