Memory.php in Loft Data Grids 7.2

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vendor/phpoffice/phpexcel/Classes/PHPExcel/CachedObjectStorage/Memory.php

<?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_CachedObjectStorage
 * @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    ##VERSION##, ##DATE##
 */

/**
 * PHPExcel_CachedObjectStorage_Memory
 *
 * @category   PHPExcel
 * @package    PHPExcel_CachedObjectStorage
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {

  /**
   * Dummy method callable from CacheBase, but unused by Memory cache
   *
   * @return	void
   */
  protected function _storeData() {
  }

  //	function _storeData()

  /**
   * Add or Update a cell in cache identified by coordinate address
   *
   * @param	string			$pCoord		Coordinate address of the cell to update
   * @param	PHPExcel_Cell	$cell		Cell to update
   * @return	PHPExcel_Cell
   * @throws	PHPExcel_Exception
   */
  public function addCacheData($pCoord, PHPExcel_Cell $cell) {
    $this->_cellCache[$pCoord] = $cell;

    //	Set current entry to the new/updated entry
    $this->_currentObjectID = $pCoord;
    return $cell;
  }

  //	function addCacheData()

  /**
   * Get cell at a specific coordinate
   *
   * @param 	string 			$pCoord		Coordinate of the cell
   * @throws 	PHPExcel_Exception
   * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
   */
  public function getCacheData($pCoord) {

    //	Check if the entry that has been requested actually exists
    if (!isset($this->_cellCache[$pCoord])) {
      $this->_currentObjectID = NULL;

      //	Return null if requested entry doesn't exist in cache
      return null;
    }

    //	Set current entry to the requested entry
    $this->_currentObjectID = $pCoord;

    //	Return requested entry
    return $this->_cellCache[$pCoord];
  }

  //	function getCacheData()

  /**
   * Clone the cell collection
   *
   * @param	PHPExcel_Worksheet	$parent		The new worksheet
   * @return	void
   */
  public function copyCellCollection(PHPExcel_Worksheet $parent) {
    parent::copyCellCollection($parent);
    $newCollection = array();
    foreach ($this->_cellCache as $k => &$cell) {
      $newCollection[$k] = clone $cell;
      $newCollection[$k]
        ->attach($this);
    }
    $this->_cellCache = $newCollection;
  }

  /**
   * Clear the cell collection and disconnect from our parent
   *
   * @return	void
   */
  public function unsetWorksheetCells() {

    //	Because cells are all stored as intact objects in memory, we need to detach each one from the parent
    foreach ($this->_cellCache as $k => &$cell) {
      $cell
        ->detach();
      $this->_cellCache[$k] = null;
    }
    unset($cell);
    $this->_cellCache = array();

    //	detach ourself from the worksheet, so that it can then delete this object successfully
    $this->_parent = null;
  }

}

Classes

Name	Description
PHPExcel_CachedObjectStorage_Memory	PHPExcel_CachedObjectStorage_Memory