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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: ElementItemPrevNext
The item prev next element class
*/
class ElementItemPrevNext extends Element {
protected $_items = null;
/*
Function: hasValue
Checks if the element's value is set.
Parameters:
$params - render parameter
Returns:
Boolean - true, on success
*/
public function hasValue($params = array()) {
@list($prev, $next) = $this->_getAdjacentItems();
return $prev || $next;
}
protected function _getAdjacentItems() {
if ($this->_items === null) {
// get category_id
if (!$category_id = $this->app->request->getInt('category_id')) {
$category_id = (int) $this->_item->getPrimaryCategoryId();
}
if ($category = $this->app->table->category->get((int) $category_id)) {
$order = $category->getParams('site')->get('config.item_order');
} else {
$order = $this->_item->getApplication()->getParams('frontpage')->get('config.item_order');
}
$this->_items = $this->app->table->item->getPrevNext($this->_item->getApplication()->id, (int) $category_id, $this->_item->id, true, null, $order);
}
return $this->_items;
}
/*
Function: edit
Renders the edit form field.
Returns:
String - html
*/
public function edit() {
return null;
}
/*
Function: render
Renders the element.
Parameters:
$params - render parameter
Returns:
String - html
*/
public function render($params = array()) {
@list($prev, $next) = $this->_getAdjacentItems();
$category_id = $this->app->request->getInt('category_id');
$prev_link = $prev ? JRoute::_($this->app->route->item($prev, false).($category_id ? '&category_id='.$category_id : '')) : '';
$next_link = $next ? JRoute::_($this->app->route->item($next, false).($category_id ? '&category_id='.$category_id : '')) : '';
// render layout
if ($layout = $this->getLayout()) {
return $this->renderLayout($layout, compact('prev', 'prev_link', 'next', 'next_link'));
}
}
}