<?php

/**

 * PHPExcel

 *

 * Copyright (c) 2006 - 2014 PHPExcel

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *

 * @category   PHPExcel

 * @package    PHPExcel_Shared_Escher

 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)

 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

 * @version    1.8.0, 2014-03-02

 */



/**

 * PHPExcel_Shared_Escher_DgContainer_SpgrContainer

 *

 * @category   PHPExcel

 * @package    PHPExcel_Shared_Escher

 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)

 */

class PHPExcel_Shared_Escher_DgContainer_SpgrContainer

{

	/**

	 * Parent Shape Group Container

	 *

	 * @var PHPExcel_Shared_Escher_DgContainer_SpgrContainer

	 */

	private $_parent;



	/**

	 * Shape Container collection

	 *

	 * @var array

	 */

	private $_children = array();



	/**

	 * Set parent Shape Group Container

	 *

	 * @param PHPExcel_Shared_Escher_DgContainer_SpgrContainer $parent

	 */

	public function setParent($parent)

	{

		$this->_parent = $parent;

	}



	/**

	 * Get the parent Shape Group Container if any

	 *

	 * @return PHPExcel_Shared_Escher_DgContainer_SpgrContainer|null

	 */

	public function getParent()

	{

		return $this->_parent;

	}



	/**

	 * Add a child. This will be either spgrContainer or spContainer

	 *

	 * @param mixed $child

	 */

	public function addChild($child)

	{

		$this->_children[] = $child;

		$child->setParent($this);

	}



	/**

	 * Get collection of Shape Containers

	 */

	public function getChildren()

	{

		return $this->_children;

	}



	/**

	 * Recursively get all spContainers within this spgrContainer

	 *

	 * @return PHPExcel_Shared_Escher_DgContainer_SpgrContainer_SpContainer[]

	 */

	public function getAllSpContainers()

	{

		$allSpContainers = array();



		foreach ($this->_children as $child) {

			if ($child instanceof PHPExcel_Shared_Escher_DgContainer_SpgrContainer) {

				$allSpContainers = array_merge($allSpContainers, $child->getAllSpContainers());

			} else {

				$allSpContainers[] = $child;

			}

		}



		return $allSpContainers;

	}

}

