Edit - ModelImage.php

Edit: ModelImage.php

<?php

namespace Nextend\Framework\Image;

use Nextend\Framework\Form\Container\ContainerTable;
use Nextend\Framework\Form\ContainerInterface;
use Nextend\Framework\Form\Element\EmptyArea;
use Nextend\Framework\Form\Element\Text\FieldImage;
use Nextend\Framework\Form\Form;
use Nextend\Framework\Visual\ModelVisual;

class ModelImage extends ModelVisual {

protected $type = 'image';

/** @var ImageStorage */
    protected $storage;

protected function init() {

$this->storage = new ImageStorage();
    }

public function renderForm() {
        $form      = new Form($this, 'n2-image-editor');
        $container = $form->getContainer();

$desktopTable = new ContainerTable($container, 'desktop', n2_('Desktop'));

$previewRow = $desktopTable->createRow('desktop-preview');

new EmptyArea($previewRow, 'desktop-preview', n2_('Preview'));

$this->renderDeviceTab($container, 'desktop-retina', n2_('Desktop retina'));
        $this->renderDeviceTab($container, 'tablet', n2_('Tablet'));
        $this->renderDeviceTab($container, 'mobile', n2_('Mobile'));

$form->render();
    }

/**
     * @param ContainerInterface $container
     */
    private function renderDeviceTab($container, $name, $label) {

$table = new ContainerTable($container, $name, $label);

$row1 = $table->createRow('desktop-row-1');

new FieldImage($row1, $name . '-image', n2_('Image'));

$previewRow = $table->createRow($name . '-preview');
        new EmptyArea($previewRow, $name . '-preview', n2_('Preview'));

}

public function addVisual($image, $visual) {

$visualId = $this->storage->add($image, $visual);

$visual = $this->storage->getById($visualId);
        if (!empty($visual)) {
            return $visual;
        }

return false;
    }

public function getVisual($image) {
        return $this->storage->getByImage($image);
    }

public function deleteVisual($id) {
        $visual = $this->storage->getById($id);
        $this->storage->deleteById($id);

return $visual;
    }

public function changeVisual($id, $value) {
        if ($this->storage->setById($id, $value)) {
            return $this->storage->getById($id);
        }

return false;
    }

public function getVisuals($setId) {
        return $this->storage->getAll();
    }
}

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