version.php

<?php
/**
 * @package    GJFileds
 *
 * @copyright  0000 Copyright (C) All rights reversed.
 * @license    http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL or later
 */

// No direct access
defined('_JEXEC') or die;

jimport('joomla.form.formfield');

if (!class_exists('GJFieldsFormField'))
{
	include 'gjfields.php';
}

/**
 * Version field
 *
 * @author  Gruz <arygroup@gmail.com>
 * @since   0.0.1
 */
class GJFieldsFormFieldVersion extends GJFieldsFormField
{
	/**
	 * The form field type
	 *
	 * @var		string
	 */
	public $type = 'Version';

	/**
	 * Cap
	 *
	 * @return   void
	 */
	protected function getLabel()
	{
		return;
	}

	/**
	 * Get HTML output
	 *
	 * @return   string
	 */
	public function getInput()
	{
		$return = '';

		/*
		if (version_compare(JVERSION, '3.0', 'ge'))
		{
			// Add CSS and JS once, define base global flag - runc only once
			if (!isset($GLOBALS[$this->type . '_initialized']))
			{
				$path_to_assets = JURI::root() . 'libraries/gjfields/';

				$scriptname = $path_to_assets . 'js/' . JString::strtolower($this->type) . '.js';
				$doc = JFactory::getDocument();
				$doc->addScript($scriptname);
			}

			// This input is used to store active tab position
			$return .= '<input type="hidden" name="' . $this->name
				. '" value="'
				. htmlspecialchars($this->value, ENT_COMPAT, 'UTF-8') . '"' . ' />';
		}
		*/

		$xml = $this->def('xml');

		// Load language
		$jinput = JFactory::getApplication()->input;
		$db = JFactory::getDBO();
		$query = $db->getQuery(true);
		$query
			->select($db->quoteName(array('element','folder','type')))
			->from($db->quoteName('#__extensions'))
			->where($db->quoteName('extension_id') . '=' . $db->Quote($jinput->get('extension_id', null)));
		$db->setQuery($query, 0, 1);
		$row = $db->loadAssoc();

		if ($row['type'] == 'plugin')
		{
			$this->plg_full_name = 'plg_' . $row['folder'] . '_' . $row['element'];

			// Is used for building joomfish links
			$this->langShortCode = null;

			$this->default_lang = JComponentHelper::getParams('com_languages')->get('admin');
			$language = JFactory::getLanguage();
			$language->load($this->plg_full_name, JPATH_ROOT . dirname($xml), 'en-GB', true);
			$language->load($this->plg_full_name, JPATH_ROOT . dirname($xml), $this->default_lang, true);
		}

		$extension = $this->def('extension');

		$user = JFactory::getUser();
		$authorise = $user->authorise('core.manage', 'com_installer');

		if (!JString::strlen($extension) || !JString::strlen($xml) || !$authorise)
		{
			return;
		}

		$version = '';

		if ($xml)
		{
			$xml = JApplicationHelper::parseXMLInstallFile(JPATH_SITE . '/' . $xml);

			if ($xml && isset($xml['version']))
			{
				$version = $xml['version'];
			}
		}

		$document = JFactory::getDocument();
		$css = '';
		$css .= ".version {display:block;text-align:right;color:brown;font-size:10px;}";
		$css .= ".readonly.plg-desc {font-weight:normal;}";
		$css .= "fieldset.radio label {width:auto;}";
		$document->addStyleDeclaration($css);

		$return .= '<span class="version">' . JText::_('JVERSION') . ' ' . $version . "</span>";

		return $return;
	}
}

// Preserve compatibility
if (!class_exists('JFormFieldNN_Version'))
{
	/**
	 * Old-fashioned field name
	 *
	 * @since  1.2.0
	 */
				class JFormFieldNN_Version extends GJFieldsFormFieldVersion
				{
				}
}