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<?php
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/**
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 * PHPExcel
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 *
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 * Copyright (c) 2006 - 2013 PHPExcel
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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 *
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 * @category   PHPExcel
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 * @package    PHPExcel_Writer_Excel2007
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 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
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 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
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 * @version    ##VERSION##, ##DATE##
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 */
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/**
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 * PHPExcel_Writer_Excel2007_Comments
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 *
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 * @category   PHPExcel
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 * @package    PHPExcel_Writer_Excel2007
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 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
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 */
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class PHPExcel_Writer_Excel2007_Comments extends PHPExcel_Writer_Excel2007_WriterPart
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{
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	/**
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	 * Write comments to XML format
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	 *
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	 * @param 	PHPExcel_Worksheet				$pWorksheet
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	 * @return 	string 								XML Output
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	 * @throws 	PHPExcel_Writer_Exception
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	 */
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	public function writeComments(PHPExcel_Worksheet $pWorksheet = null)
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	{
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		// Create XML writer
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		$objWriter = null;
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		if ($this->getParentWriter()->getUseDiskCaching()) {
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			$objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
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		} else {
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			$objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
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		}
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		// XML header
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		$objWriter->startDocument('1.0','UTF-8','yes');
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  		// Comments cache
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  		$comments	= $pWorksheet->getComments();
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  		// Authors cache
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  		$authors	= array();
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  		$authorId	= 0;
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		foreach ($comments as $comment) {
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			if (!isset($authors[$comment->getAuthor()])) {
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				$authors[$comment->getAuthor()] = $authorId++;
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			}
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		}
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		// comments
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		$objWriter->startElement('comments');
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		$objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/spreadsheetml/2006/main');
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			// Loop through authors
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			$objWriter->startElement('authors');
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			foreach ($authors as $author => $index) {
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				$objWriter->writeElement('author', $author);
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			}
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			$objWriter->endElement();
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			// Loop through comments
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			$objWriter->startElement('commentList');
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			foreach ($comments as $key => $value) {
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				$this->_writeComment($objWriter, $key, $value, $authors);
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			}
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			$objWriter->endElement();
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		$objWriter->endElement();
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		// Return
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		return $objWriter->getData();
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	}
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	/**
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	 * Write comment to XML format
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	 *
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	 * @param 	PHPExcel_Shared_XMLWriter		$objWriter 			XML Writer
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	 * @param	string							$pCellReference		Cell reference
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	 * @param 	PHPExcel_Comment				$pComment			Comment
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	 * @param	array							$pAuthors			Array of authors
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	 * @throws 	PHPExcel_Writer_Exception
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	 */
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	public function _writeComment(PHPExcel_Shared_XMLWriter $objWriter = null, $pCellReference = 'A1', PHPExcel_Comment $pComment = null, $pAuthors = null)
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	{
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		// comment
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		$objWriter->startElement('comment');
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		$objWriter->writeAttribute('ref', 		$pCellReference);
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		$objWriter->writeAttribute('authorId', 	$pAuthors[$pComment->getAuthor()]);
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			// text
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			$objWriter->startElement('text');
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			$this->getParentWriter()->getWriterPart('stringtable')->writeRichText($objWriter, $pComment->getText());
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			$objWriter->endElement();
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		$objWriter->endElement();
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	}
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	/**
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	 * Write VML comments to XML format
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	 *
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	 * @param 	PHPExcel_Worksheet				$pWorksheet
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	 * @return 	string 								XML Output
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	 * @throws 	PHPExcel_Writer_Exception
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	 */
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	public function writeVMLComments(PHPExcel_Worksheet $pWorksheet = null)
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	{
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		// Create XML writer
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		$objWriter = null;
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		if ($this->getParentWriter()->getUseDiskCaching()) {
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			$objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
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		} else {
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			$objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
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		}
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		// XML header
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		$objWriter->startDocument('1.0','UTF-8','yes');
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  		// Comments cache
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  		$comments	= $pWorksheet->getComments();
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		// xml
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		$objWriter->startElement('xml');
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		$objWriter->writeAttribute('xmlns:v', 'urn:schemas-microsoft-com:vml');
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		$objWriter->writeAttribute('xmlns:o', 'urn:schemas-microsoft-com:office:office');
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		$objWriter->writeAttribute('xmlns:x', 'urn:schemas-microsoft-com:office:excel');
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			// o:shapelayout
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			$objWriter->startElement('o:shapelayout');
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			$objWriter->writeAttribute('v:ext', 		'edit');
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				// o:idmap
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				$objWriter->startElement('o:idmap');
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				$objWriter->writeAttribute('v:ext', 	'edit');
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				$objWriter->writeAttribute('data', 		'1');
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				$objWriter->endElement();
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			$objWriter->endElement();
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			// v:shapetype
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			$objWriter->startElement('v:shapetype');
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			$objWriter->writeAttribute('id', 		'_x0000_t202');
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			$objWriter->writeAttribute('coordsize', '21600,21600');
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			$objWriter->writeAttribute('o:spt', 	'202');
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			$objWriter->writeAttribute('path', 		'm,l,21600r21600,l21600,xe');
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				// v:stroke
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				$objWriter->startElement('v:stroke');
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				$objWriter->writeAttribute('joinstyle', 	'miter');
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				$objWriter->endElement();
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				// v:path
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				$objWriter->startElement('v:path');
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				$objWriter->writeAttribute('gradientshapeok', 	't');
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				$objWriter->writeAttribute('o:connecttype', 	'rect');
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				$objWriter->endElement();
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			$objWriter->endElement();
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			// Loop through comments
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			foreach ($comments as $key => $value) {
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				$this->_writeVMLComment($objWriter, $key, $value);
182
			}
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		$objWriter->endElement();
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		// Return
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		return $objWriter->getData();
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	}
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190
	/**
191
	 * Write VML comment to XML format
192
	 *
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	 * @param 	PHPExcel_Shared_XMLWriter		$objWriter 			XML Writer
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	 * @param	string							$pCellReference		Cell reference
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	 * @param 	PHPExcel_Comment				$pComment			Comment
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	 * @throws 	PHPExcel_Writer_Exception
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	 */
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	public function _writeVMLComment(PHPExcel_Shared_XMLWriter $objWriter = null, $pCellReference = 'A1', PHPExcel_Comment $pComment = null)
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	{
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 		// Metadata
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 		list($column, $row) = PHPExcel_Cell::coordinateFromString($pCellReference);
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 		$column = PHPExcel_Cell::columnIndexFromString($column);
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 		$id = 1024 + $column + $row;
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 		$id = substr($id, 0, 4);
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		// v:shape
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		$objWriter->startElement('v:shape');
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		$objWriter->writeAttribute('id', 			'_x0000_s' . $id);
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		$objWriter->writeAttribute('type', 			'#_x0000_t202');
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		$objWriter->writeAttribute('style', 		'position:absolute;margin-left:' . $pComment->getMarginLeft() . ';margin-top:' . $pComment->getMarginTop() . ';width:' . $pComment->getWidth() . ';height:' . $pComment->getHeight() . ';z-index:1;visibility:' . ($pComment->getVisible() ? 'visible' : 'hidden'));
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		$objWriter->writeAttribute('fillcolor', 	'#' . $pComment->getFillColor()->getRGB());
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		$objWriter->writeAttribute('o:insetmode', 	'auto');
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			// v:fill
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			$objWriter->startElement('v:fill');
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			$objWriter->writeAttribute('color2', 		'#' . $pComment->getFillColor()->getRGB());
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			$objWriter->endElement();
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			// v:shadow
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			$objWriter->startElement('v:shadow');
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			$objWriter->writeAttribute('on', 			't');
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			$objWriter->writeAttribute('color', 		'black');
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			$objWriter->writeAttribute('obscured', 		't');
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			$objWriter->endElement();
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			// v:path
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			$objWriter->startElement('v:path');
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			$objWriter->writeAttribute('o:connecttype', 'none');
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			$objWriter->endElement();
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			// v:textbox
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			$objWriter->startElement('v:textbox');
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			$objWriter->writeAttribute('style', 'mso-direction-alt:auto');
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				// div
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				$objWriter->startElement('div');
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				$objWriter->writeAttribute('style', 'text-align:left');
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				$objWriter->endElement();
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240
			$objWriter->endElement();
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			// x:ClientData
243
			$objWriter->startElement('x:ClientData');
244
			$objWriter->writeAttribute('ObjectType', 'Note');
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				// x:MoveWithCells
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				$objWriter->writeElement('x:MoveWithCells', '');
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249
				// x:SizeWithCells
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				$objWriter->writeElement('x:SizeWithCells', '');
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				// x:Anchor
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				//$objWriter->writeElement('x:Anchor', $column . ', 15, ' . ($row - 2) . ', 10, ' . ($column + 4) . ', 15, ' . ($row + 5) . ', 18');
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255
				// x:AutoFill
256
				$objWriter->writeElement('x:AutoFill', 'False');
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258
				// x:Row
259
				$objWriter->writeElement('x:Row', ($row - 1));
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261
				// x:Column
262
				$objWriter->writeElement('x:Column', ($column - 1));
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264
			$objWriter->endElement();
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266
		$objWriter->endElement();
267
	}
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}