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/home/develito/httpdocs/plugins/system/nnframework/fields/components.php

<?php
/**
 * @package         NoNumber Framework
 * @version         16.3.3874
 * 
 * @author          Peter van Westen <peter@nonumber.nl>
 * @link            http://www.nonumber.nl
 * @copyright       Copyright © 2016 NoNumber All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

defined('_JEXEC') or die;

require_once dirname(__DIR__) . '/helpers/field.php';

class JFormFieldNN_Components extends NNFormField
{
	public $type = 'Components';

protected function getInput()
	{
		$this->params = $this->element->attributes();

$options = $this->getComponents();

if (empty($options))
		{
			return '';
		}

$size = (int) $this->get('size');

require_once dirname(__DIR__) . '/helpers/html.php';

return NNHtml::selectlistsimple($options, $this->name, $this->value, $this->id, $size, 1);
	}

function getComponents()
	{
		$frontend = $this->get('frontend', 1);
		$admin    = $this->get('admin', 1);

if (!$frontend && !$admin)
		{
			return array();
		}

jimport('joomla.filesystem.folder');
		jimport('joomla.filesystem.file');

$query = $this->db->getQuery(true)
			->select('e.name, e.element')
			->from('#__extensions AS e')
			->where('e.type = ' . $this->db->quote('component'))
			->where('e.name != ""')
			->where('e.element != ""')
			->group('e.element')
			->order('e.element, e.name');
		$this->db->setQuery($query);
		$components = $this->db->loadObjectList();

$comps = array();
		$lang  = JFactory::getLanguage();

foreach ($components as $i => $component)
		{
			if (empty($component->element))
			{
				continue;
			}

$component_folder = ($frontend ? JPATH_SITE : JPATH_ADMINISTRATOR) . '/components/' . $component->element;

// return if there is no main component folder
			if (!JFolder::exists($component_folder))
			{
				continue;
			}

// return if there is no view(s) folder
			if (!JFolder::exists($component_folder . '/views') && !JFolder::exists($component_folder . '/view'))
			{
				continue;
			}

if (strpos($component->name, ' ') === false)
			{
				// Load the core file then
				// Load extension-local file.
				$lang->load($component->element . '.sys', JPATH_BASE, null, false, false)
				|| $lang->load($component->element . '.sys', JPATH_ADMINISTRATOR . '/components/' . $component->element, null, false, false)
				|| $lang->load($component->element . '.sys', JPATH_BASE, $lang->getDefault(), false, false)
				|| $lang->load($component->element . '.sys', JPATH_ADMINISTRATOR . '/components/' . $component->element, $lang->getDefault(), false, false);

$component->name = JText::_(strtoupper($component->name));
			}

$comps[preg_replace('#[^a-z0-9_]#i', '', $component->name . '_' . $component->element)] = $component;
		}

ksort($comps);

$options = array();

foreach ($comps as $component)
		{
			$options[] = JHtml::_('select.option', $component->element, $component->name);
		}

return $options;
	}
}