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plg_extension_componentbuil.../script.php

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<?php
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/**
* @package Joomla.Component.Builder
*
* @created 30th April, 2015
* @author Llewellyn van der Merwe <https://dev.vdm.io>
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* @git Joomla Component Builder <https://git.vdm.dev/joomla/Component-Builder>
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* @copyright Copyright (C) 2015 Vast Development Method. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
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*/
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
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use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Filesystem\File;
use Joomla\CMS\Filesystem\Folder;
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/**
* Extension - Componentbuilder Field Ordering Compiler script file.
*
* @package PlgExtensionComponentbuilderFieldOrderingCompiler
*/
class plgExtensionComponentbuilderFieldOrderingCompilerInstallerScript
{
/**
* Called before any type of action
*
* @param string $route Which action is happening (install|uninstall|discover_install|update)
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* @param Joomla\CMS\Installer\InstallerAdapter $adapter The object responsible for running this script
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*
* @return boolean True on success
*/
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public function preflight($route, $adapter)
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{
// get application
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$app = Factory::getApplication();
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// the default for both install and update
$jversion = new JVersion();
if (!$jversion->isCompatible('3.8.0'))
{
$app->enqueueMessage('Please upgrade to at least Joomla! 3.8.0 before continuing!', 'error');
return false;
}
if ('install' === $route)
{
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// check that componentbuilder is installed
$pathToCore = JPATH_ADMINISTRATOR . '/components/com_componentbuilder/helpers/componentbuilder.php';
if (!JFile::exists($pathToCore))
{
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$app->enqueueMessage('Joomla Component Builder must first be installed from <a href="https://www.joomlacomponentbuilder.com/ " target="_blank">Joomla Component Builder</a>.', 'error');
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return false;
}
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// load the helper class
JLoader::register('ComponentbuilderHelper', JPATH_ADMINISTRATOR . '/components/com_componentbuilder/helpers/componentbuilder.php');
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// block install
$blockInstall = true;
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// check the version of JCB
$manifest = ComponentbuilderHelper::manifest();
if (isset($manifest->version) && strpos($manifest->version, '.') !== false)
{
// get the version
$jcbVersion = explode('.', $manifest->version);
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// check that we have JCB 3.0.0 or higher installed
if (count($jcbVersion) == 3 && $jcbVersion[0] >= 3 &&
(
($jcbVersion[0] == 3 && $jcbVersion[1] == 0 && $jcbVersion[2] >= 0) ||
($jcbVersion[0] == 3 && $jcbVersion[1] > 0) ||
$jcbVersion[0] > 3)
)
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{
$blockInstall = false;
}
}
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// allow install if all conditions are met
if ($blockInstall)
{
$app->enqueueMessage('Please upgrade to JCB v3.0.0 or higher before installing this plugin.', 'error');
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return false;
}
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}
return true;
}
}