<?php

/*
 * © 2016 IRSTEA
 * Guillaume Perréal <guillaume.perreal@irstea.fr>
 * Tous droits réservés.
 */

namespace Irstea\PlantUmlBundle\Model\Namespace_;

use Irstea\PlantUmlBundle\Model\NamespaceInterface;
use Irstea\PlantUmlBundle\Model\NodeInterface;
use Irstea\PlantUmlBundle\Writer\WritableInterface;
use Irstea\PlantUmlBundle\Writer\WriterInterface;

/**
 * Description of Namespace
 *
 * @author Guillaume Perréal <guillaume.perreal@irstea.fr>
 */
abstract class AbstractNamespace implements WritableInterface, NamespaceInterface
{
    /**
     * @var NodeInterface[]
     */
    private $nodes = [];

    /**
     *
     * @param NodeInterface $node
     */
    public function addNode(NodeInterface $node)
    {
        $this->nodes[] = $node;
        return $this;
    }

    /**
     * @param WriterInterface $writer
     * @return self
     */
    protected function writeNodesTo(WriterInterface $writer)
    {
        foreach ($this->nodes as $node) {
            $node->writeTo($writer);
        }
        return $this;
    }

    /**
     * @return bool
     */
    protected function isEmpty()
    {
        return empty($this->nodes);
    }

    public function toConfig(array &$conf)
    {
        $conf['namespace'] = static::CONF_TYPE;
    }
}