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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Theme\Observer;
use Magento\Framework\Event\Observer as EventObserver;
use Magento\Framework\Event\ObserverInterface;
use Magento\Theme\Model\Theme;
class CleanThemeRelatedContentObserver implements ObserverInterface
{
/**
* @var \Magento\Framework\View\Design\Theme\ImageFactory
*/
protected $themeImageFactory;
/**
* @var \Magento\Widget\Model\ResourceModel\Layout\Update\Collection
*/
protected $updateCollection;
/**
* @var \Magento\Theme\Model\Config\Customization
*/
protected $themeConfig;
/**
* @param \Magento\Framework\View\Design\Theme\ImageFactory $themeImageFactory
* @param \Magento\Widget\Model\ResourceModel\Layout\Update\Collection $updateCollection
* @param \Magento\Theme\Model\Config\Customization $themeConfig
*/
public function __construct(
\Magento\Framework\View\Design\Theme\ImageFactory $themeImageFactory,
\Magento\Widget\Model\ResourceModel\Layout\Update\Collection $updateCollection,
\Magento\Theme\Model\Config\Customization $themeConfig
) {
$this->themeImageFactory = $themeImageFactory;
$this->updateCollection = $updateCollection;
$this->themeConfig = $themeConfig;
}
/**
* Clean related contents to a theme (before save)
*
* @param EventObserver $observer
* @return void
* @throws \Magento\Framework\Exception\LocalizedException
*/
public function execute(EventObserver $observer)
{
$theme = $observer->getEvent()->getData('theme');
if (!($theme instanceof \Magento\Framework\View\Design\ThemeInterface)) {
return;
}
/** @var $theme \Magento\Framework\View\Design\ThemeInterface */
if ($this->themeConfig->isThemeAssignedToStore($theme)) {
throw new \Magento\Framework\Exception\LocalizedException(__('Theme isn\'t deletable.'));
}
$this->themeImageFactory->create(['theme' => $theme])->removePreviewImage();
$this->updateCollection->addThemeFilter($theme->getId())->delete();
}
}