script.php

<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
use Joomla\CMS\Factory;
use Joomla\CMS\Installer\Installer;
use Joomla\CMS\Installer\InstallerHelper;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Plugin\PluginHelper;

/**
 * Script file of HelloWorld component.
 *
 * The name of this class is dependent on the component being installed.
 * The class name should have the component's name, directly followed by
 * the text InstallerScript (ex:. com_helloWorldInstallerScript).
 *
 * This class will be called by Joomla!'s installer, if specified in your component's
 * manifest file, and is used for custom automation actions in its installation process.
 *
 * In order to use this automation script, you should reference it in your component's
 * manifest file as follows:
 * <scriptfile>script.php</scriptfile>
 *
 * @package     Joomla.Administrator
 * @subpackage  com_helloworld
 *
 * @copyright   Copyright (C) 2005 - 2018 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */
class plgSystemWt_digitally_signed_pdfInstallerScript
{
    /**
     * This method is called after a component is installed.
     *
     * @param  \stdClass $parent - Parent object calling this method.
     *
     * @return void
     */
    public function install($parent)
    {

    }

    /**
     * This method is called after a component is uninstalled.
     *
     * @param  \stdClass $parent - Parent object calling this method.
     *
     * @return void
     */
    public function uninstall($parent) 
    {

		
    }

    /**
     * This method is called after a component is updated.
     *
     * @param  \stdClass $parent - Parent object calling object.
     *
     * @return void
     */
    public function update($parent) 
    {

    }

    /**
     * Runs just before any installation action is performed on the component.
     * Verifications and pre-requisites should run in this function.
     *
     * @param  string    $type   - Type of PreFlight action. Possible values are:
     *                           - * install
     *                           - * update
     *                           - * discover_install
     * @param  \stdClass $parent - Parent object calling object.
     *
     * @return void
     */
    public function preflight($type, $parent) 
    {

    }



    /**
     * Runs right after any installation action is performed on the component.
     *
     * @param  string    $type   - Type of PostFlight action. Possible values are:
     *                           - * install
     *                           - * update
     *                           - * discover_install
     * @param  \stdClass $parent - Parent object calling object.
     *
     * @return void
     */
    function postflight($type, $installer) 
    {

		$jversion = new JVersion();
			
		// only for Joomla 3.x

		if (version_compare($jversion->getShortVersion(), '4.0', '<')) {
			
			$element = strtoupper($installer->get("element")); // ex. "$parent"
			$class = 'span';
			$web_tolk_site_icon = "<i class='icon-share-alt'></i>";

		} else {
			
			$element = strtoupper($installer->getElement());
			$class = 'col-';
			$web_tolk_site_icon = '';
		}

	

		echo "
		<div class='row bg-white m-0' style='margin:25px auto; border:1px solid rgba(0,0,0,0.125); box-shadow:0px 0px 10px rgba(0,0,0,0.125); padding: 10px 20px;'>
		<div class='".$class."8' id='wt_download_id_form_wrapper'>
		<h2>".Text::_("PLG_".$element."_AFTER_".$type)." <br/>".Text::_("PLG_".$element)."</h2>
		".Text::_("PLG_".$element."_DESC");
		
		// On Install user instructions
		echo Text::_("PLG_".$element."_DESC2");
		
		
		echo Text::_("PLG_".$element."_WHATS_NEW");

		echo "</div>
		<div class='".$class."4' style='display:flex; flex-direction:column; justify-content:center;'>
		<img width='200px' src='https://web-tolk.ru/web_tolk_logo_wide.png'>
		<p>Joomla Extensions</p>
		<p class='btn-group'>
			<a class='btn btn-sm btn-outline-primary' href='https://web-tolk.ru' target='_blank'>".$web_tolk_site_icon." https://web-tolk.ru</a>
			<a class='btn btn-sm btn-outline-primary' href='mailto:info@web-tolk.ru'><i class='icon-envelope'></i> info@web-tolk.ru</a>
		</p>
		".Text::_("PLG_".$element."_MAYBE_INTERESTING")."
		</div>

		";	
	
    }
}