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<?php declare(strict_types = 1);
/*
 * Copyright (c) 2020, Josef Kufner  <josef@kufner.cz>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
namespace Smalldb\StateMachine\StyleExtension\Definition;
use Smalldb\StateMachine\Definition\ExtensionInterface;
use Smalldb\StateMachine\Definition\Renderer\StateMachineGraphProcessor;
use Smalldb\StateMachine\Definition\StateMachineGraph\StateMachineGraph;
use Smalldb\StateMachine\Utils\SimpleJsonSerializableTrait;
class GraphLayoutExtension implements ExtensionInterface, StateMachineGraphProcessor
{
    use SimpleJsonSerializableTrait;
    private ?string $layout;
    private ?array $layoutOptions;
    public function __construct(?string $layout, ?array $layoutOptions)
    {
        $this->layout = $layout;
        $this->layoutOptions = $layoutOptions;
    }
    public function getLayout(): ?string
    {
        return $this->layout;
    }
    public function getLayoutOptions(): ?array
    {
        return $this->layoutOptions;
    }
    public function processGraphAttrs(StateMachineGraph $graph, array &$exportedGraph)
    {
        if (($layout = $this->getLayout()) !== null) {
            $exportedGraph['layout'] = $layout;
        }
        if (($layoutOptions = $this->getLayoutOptions()) !== null) {
            $exportedGraph['layoutOptions'] = $layoutOptions;
        }
    }
}