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<?php/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2012 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_Writer_Excel2007
 * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    1.7.8, 2012-10-12
 */
 
 
 /**
 * PHPExcel_Writer_Excel2007_Worksheet
 *
 * @category   PHPExcel
 * @package    PHPExcel_Writer_Excel2007
 * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
 class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_WriterPart
 {
 /**
 * Write worksheet to XML format
 *
 * @param    PHPExcel_Worksheet        $pSheet
 * @param    string[]                $pStringTable
 * @param    boolean                    $includeCharts    Flag indicating if we should write charts
 * @return    string                    XML Output
 * @throws    Exception
 */
 public function writeWorksheet($pSheet = null, $pStringTable = null, $includeCharts = FALSE)
 {
 if (!is_null($pSheet)) {
 // Create XML writer
 $objWriter = null;
 if ($this->getParentWriter()->getUseDiskCaching()) {
 $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());
 } else {
 $objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);
 }
 
 // XML header
 $objWriter->startDocument('1.0','UTF-8','yes');
 
 // Worksheet
 $objWriter->startElement('worksheet');
 $objWriter->writeAttribute('xml:space', 'preserve');
 $objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/spreadsheetml/2006/main');
 $objWriter->writeAttribute('xmlns:r', 'http://schemas.openxmlformats.org/officeDocument/2006/relationships');
 
 // sheetPr
 $this->_writeSheetPr($objWriter, $pSheet);
 
 // Dimension
 $this->_writeDimension($objWriter, $pSheet);
 
 // sheetViews
 $this->_writeSheetViews($objWriter, $pSheet);
 
 // sheetFormatPr
 $this->_writeSheetFormatPr($objWriter, $pSheet);
 
 // cols
 $this->_writeCols($objWriter, $pSheet);
 
 // sheetData
 $this->_writeSheetData($objWriter, $pSheet, $pStringTable);
 
 // sheetProtection
 $this->_writeSheetProtection($objWriter, $pSheet);
 
 // protectedRanges
 $this->_writeProtectedRanges($objWriter, $pSheet);
 
 // autoFilter
 $this->_writeAutoFilter($objWriter, $pSheet);
 
 // mergeCells
 $this->_writeMergeCells($objWriter, $pSheet);
 
 // conditionalFormatting
 $this->_writeConditionalFormatting($objWriter, $pSheet);
 
 // dataValidations
 $this->_writeDataValidations($objWriter, $pSheet);
 
 // hyperlinks
 $this->_writeHyperlinks($objWriter, $pSheet);
 
 // Print options
 $this->_writePrintOptions($objWriter, $pSheet);
 
 // Page margins
 $this->_writePageMargins($objWriter, $pSheet);
 
 // Page setup
 $this->_writePageSetup($objWriter, $pSheet);
 
 // Header / footer
 $this->_writeHeaderFooter($objWriter, $pSheet);
 
 // Breaks
 $this->_writeBreaks($objWriter, $pSheet);
 
 // Drawings and/or Charts
 $this->_writeDrawings($objWriter, $pSheet, $includeCharts);
 
 // LegacyDrawing
 $this->_writeLegacyDrawing($objWriter, $pSheet);
 
 // LegacyDrawingHF
 $this->_writeLegacyDrawingHF($objWriter, $pSheet);
 
 $objWriter->endElement();
 
 // Return
 return $objWriter->getData();
 } else {
 throw new Exception("Invalid PHPExcel_Worksheet object passed.");
 }
 }
 
 /**
 * Write SheetPr
 *
 * @param    PHPExcel_Shared_XMLWriter        $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeSheetPr(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // sheetPr
 $objWriter->startElement('sheetPr');
 //$objWriter->writeAttribute('codeName',        $pSheet->getTitle());
 $autoFilterRange = $pSheet->getAutoFilter()->getRange();
 if (!empty($autoFilterRange)) {
 $objWriter->writeAttribute('filterMode', 1);
 $pSheet->getAutoFilter()->showHideRows();
 }
 
 // tabColor
 if ($pSheet->isTabColorSet()) {
 $objWriter->startElement('tabColor');
 $objWriter->writeAttribute('rgb',    $pSheet->getTabColor()->getARGB());
 $objWriter->endElement();
 }
 
 // outlinePr
 $objWriter->startElement('outlinePr');
 $objWriter->writeAttribute('summaryBelow',    ($pSheet->getShowSummaryBelow() ? '1' : '0'));
 $objWriter->writeAttribute('summaryRight',    ($pSheet->getShowSummaryRight() ? '1' : '0'));
 $objWriter->endElement();
 
 // pageSetUpPr
 if ($pSheet->getPageSetup()->getFitToPage()) {
 $objWriter->startElement('pageSetUpPr');
 $objWriter->writeAttribute('fitToPage',    '1');
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 
 /**
 * Write Dimension
 *
 * @param    PHPExcel_Shared_XMLWriter    $objWriter        XML Writer
 * @param    PHPExcel_Worksheet            $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeDimension(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // dimension
 $objWriter->startElement('dimension');
 $objWriter->writeAttribute('ref', $pSheet->calculateWorksheetDimension());
 $objWriter->endElement();
 }
 
 /**
 * Write SheetViews
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeSheetViews(PHPExcel_Shared_XMLWriter $objWriter = NULL, PHPExcel_Worksheet $pSheet = NULL)
 {
 // sheetViews
 $objWriter->startElement('sheetViews');
 
 // Sheet selected?
 $sheetSelected = false;
 if ($this->getParentWriter()->getPHPExcel()->getIndex($pSheet) == $this->getParentWriter()->getPHPExcel()->getActiveSheetIndex())
 $sheetSelected = true;
 
 
 // sheetView
 $objWriter->startElement('sheetView');
 $objWriter->writeAttribute('tabSelected',        $sheetSelected ? '1' : '0');
 $objWriter->writeAttribute('workbookViewId',    '0');
 
 // Zoom scales
 if ($pSheet->getSheetView()->getZoomScale() != 100) {
 $objWriter->writeAttribute('zoomScale',    $pSheet->getSheetView()->getZoomScale());
 }
 if ($pSheet->getSheetView()->getZoomScaleNormal() != 100) {
 $objWriter->writeAttribute('zoomScaleNormal',    $pSheet->getSheetView()->getZoomScaleNormal());
 }
 
 // View Layout Type
 if ($pSheet->getSheetView()->getView() !== PHPExcel_Worksheet_SheetView::SHEETVIEW_NORMAL) {
 $objWriter->writeAttribute('view',    $pSheet->getSheetView()->getView());
 }
 
 // Gridlines
 if ($pSheet->getShowGridlines()) {
 $objWriter->writeAttribute('showGridLines',    'true');
 } else {
 $objWriter->writeAttribute('showGridLines',    'false');
 }
 
 // Row and column headers
 if ($pSheet->getShowRowColHeaders()) {
 $objWriter->writeAttribute('showRowColHeaders', '1');
 } else {
 $objWriter->writeAttribute('showRowColHeaders', '0');
 }
 
 // Right-to-left
 if ($pSheet->getRightToLeft()) {
 $objWriter->writeAttribute('rightToLeft',    'true');
 }
 
 $activeCell = $pSheet->getActiveCell();
 
 // Pane
 $pane = '';
 $topLeftCell = $pSheet->getFreezePane();
 if (($topLeftCell != '') && ($topLeftCell != 'A1')) {
 $activeCell = $topLeftCell;
 // Calculate freeze coordinates
 $xSplit = $ySplit = 0;
 
 list($xSplit, $ySplit) = PHPExcel_Cell::coordinateFromString($topLeftCell);
 $xSplit = PHPExcel_Cell::columnIndexFromString($xSplit);
 
 // pane
 $pane = 'topRight';
 $objWriter->startElement('pane');
 if ($xSplit > 1)
 $objWriter->writeAttribute('xSplit',    $xSplit - 1);
 if ($ySplit > 1) {
 $objWriter->writeAttribute('ySplit',    $ySplit - 1);
 $pane = ($xSplit > 1) ? 'bottomRight' : 'bottomLeft';
 }
 $objWriter->writeAttribute('topLeftCell',    $topLeftCell);
 $objWriter->writeAttribute('activePane',    $pane);
 $objWriter->writeAttribute('state',        'frozen');
 $objWriter->endElement();
 
 if (($xSplit > 1) && ($ySplit > 1)) {
 //    Write additional selections if more than two panes (ie both an X and a Y split)
 $objWriter->startElement('selection');    $objWriter->writeAttribute('pane', 'topRight');        $objWriter->endElement();
 $objWriter->startElement('selection');    $objWriter->writeAttribute('pane', 'bottomLeft');    $objWriter->endElement();
 }
 }
 
 // Selection
 //                if ($pane != '') {
 //    Only need to write selection element if we have a split pane
 //        We cheat a little by over-riding the active cell selection, setting it to the split cell
 $objWriter->startElement('selection');
 if ($pane != '') {
 $objWriter->writeAttribute('pane', $pane);
 }
 $objWriter->writeAttribute('activeCell', $activeCell);
 $objWriter->writeAttribute('sqref', $activeCell);
 $objWriter->endElement();
 //                }
 
 $objWriter->endElement();
 
 $objWriter->endElement();
 }
 
 /**
 * Write SheetFormatPr
 *
 * @param    PHPExcel_Shared_XMLWriter $objWriter        XML Writer
 * @param    PHPExcel_Worksheet          $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeSheetFormatPr(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // sheetFormatPr
 $objWriter->startElement('sheetFormatPr');
 
 // Default row height
 if ($pSheet->getDefaultRowDimension()->getRowHeight() >= 0) {
 $objWriter->writeAttribute('customHeight',        'true');
 $objWriter->writeAttribute('defaultRowHeight',    PHPExcel_Shared_String::FormatNumber($pSheet->getDefaultRowDimension()->getRowHeight()));
 } else {
 $objWriter->writeAttribute('defaultRowHeight', '14.4');
 }
 
 // Set Zero Height row
 if ((string)$pSheet->getDefaultRowDimension()->getzeroHeight()  == '1' ||
 strtolower((string)$pSheet->getDefaultRowDimension()->getzeroHeight()) == 'true' ) {
 $objWriter->writeAttribute('zeroHeight', '1');
 }
 
 // Default column width
 if ($pSheet->getDefaultColumnDimension()->getWidth() >= 0) {
 $objWriter->writeAttribute('defaultColWidth', PHPExcel_Shared_String::FormatNumber($pSheet->getDefaultColumnDimension()->getWidth()));
 }
 
 // Outline level - row
 $outlineLevelRow = 0;
 foreach ($pSheet->getRowDimensions() as $dimension) {
 if ($dimension->getOutlineLevel() > $outlineLevelRow) {
 $outlineLevelRow = $dimension->getOutlineLevel();
 }
 }
 $objWriter->writeAttribute('outlineLevelRow',    (int)$outlineLevelRow);
 
 // Outline level - column
 $outlineLevelCol = 0;
 foreach ($pSheet->getColumnDimensions() as $dimension) {
 if ($dimension->getOutlineLevel() > $outlineLevelCol) {
 $outlineLevelCol = $dimension->getOutlineLevel();
 }
 }
 $objWriter->writeAttribute('outlineLevelCol',    (int)$outlineLevelCol);
 
 $objWriter->endElement();
 }
 
 /**
 * Write Cols
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeCols(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // cols
 if (count($pSheet->getColumnDimensions()) > 0)  {
 $objWriter->startElement('cols');
 
 $pSheet->calculateColumnWidths();
 
 // Loop through column dimensions
 foreach ($pSheet->getColumnDimensions() as $colDimension) {
 // col
 $objWriter->startElement('col');
 $objWriter->writeAttribute('min',    PHPExcel_Cell::columnIndexFromString($colDimension->getColumnIndex()));
 $objWriter->writeAttribute('max',    PHPExcel_Cell::columnIndexFromString($colDimension->getColumnIndex()));
 
 if ($colDimension->getWidth() < 0) {
 // No width set, apply default of 10
 $objWriter->writeAttribute('width',        '9.10');
 } else {
 // Width set
 $objWriter->writeAttribute('width',        PHPExcel_Shared_String::FormatNumber($colDimension->getWidth()));
 }
 
 // Column visibility
 if ($colDimension->getVisible() == false) {
 $objWriter->writeAttribute('hidden',        'true');
 }
 
 // Auto size?
 if ($colDimension->getAutoSize()) {
 $objWriter->writeAttribute('bestFit',        'true');
 }
 
 // Custom width?
 if ($colDimension->getWidth() != $pSheet->getDefaultColumnDimension()->getWidth()) {
 $objWriter->writeAttribute('customWidth',    'true');
 }
 
 // Collapsed
 if ($colDimension->getCollapsed() == true) {
 $objWriter->writeAttribute('collapsed',        'true');
 }
 
 // Outline level
 if ($colDimension->getOutlineLevel() > 0) {
 $objWriter->writeAttribute('outlineLevel',    $colDimension->getOutlineLevel());
 }
 
 // Style
 $objWriter->writeAttribute('style', $colDimension->getXfIndex());
 
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 }
 
 /**
 * Write SheetProtection
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeSheetProtection(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // sheetProtection
 $objWriter->startElement('sheetProtection');
 
 if ($pSheet->getProtection()->getPassword() != '') {
 $objWriter->writeAttribute('password',                $pSheet->getProtection()->getPassword());
 }
 
 $objWriter->writeAttribute('sheet',                    ($pSheet->getProtection()->getSheet()                ? 'true' : 'false'));
 $objWriter->writeAttribute('objects',                ($pSheet->getProtection()->getObjects()                ? 'true' : 'false'));
 $objWriter->writeAttribute('scenarios',                ($pSheet->getProtection()->getScenarios()            ? 'true' : 'false'));
 $objWriter->writeAttribute('formatCells',            ($pSheet->getProtection()->getFormatCells()            ? 'true' : 'false'));
 $objWriter->writeAttribute('formatColumns',            ($pSheet->getProtection()->getFormatColumns()        ? 'true' : 'false'));
 $objWriter->writeAttribute('formatRows',            ($pSheet->getProtection()->getFormatRows()            ? 'true' : 'false'));
 $objWriter->writeAttribute('insertColumns',            ($pSheet->getProtection()->getInsertColumns()        ? 'true' : 'false'));
 $objWriter->writeAttribute('insertRows',            ($pSheet->getProtection()->getInsertRows()            ? 'true' : 'false'));
 $objWriter->writeAttribute('insertHyperlinks',        ($pSheet->getProtection()->getInsertHyperlinks()    ? 'true' : 'false'));
 $objWriter->writeAttribute('deleteColumns',            ($pSheet->getProtection()->getDeleteColumns()        ? 'true' : 'false'));
 $objWriter->writeAttribute('deleteRows',            ($pSheet->getProtection()->getDeleteRows()            ? 'true' : 'false'));
 $objWriter->writeAttribute('selectLockedCells',        ($pSheet->getProtection()->getSelectLockedCells()    ? 'true' : 'false'));
 $objWriter->writeAttribute('sort',                    ($pSheet->getProtection()->getSort()                ? 'true' : 'false'));
 $objWriter->writeAttribute('autoFilter',            ($pSheet->getProtection()->getAutoFilter()            ? 'true' : 'false'));
 $objWriter->writeAttribute('pivotTables',            ($pSheet->getProtection()->getPivotTables()            ? 'true' : 'false'));
 $objWriter->writeAttribute('selectUnlockedCells',    ($pSheet->getProtection()->getSelectUnlockedCells()    ? 'true' : 'false'));
 $objWriter->endElement();
 }
 
 /**
 * Write ConditionalFormatting
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeConditionalFormatting(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // Conditional id
 $id = 1;
 
 // Loop through styles in the current worksheet
 foreach ($pSheet->getConditionalStylesCollection() as $cellCoordinate => $conditionalStyles) {
 foreach ($conditionalStyles as $conditional) {
 // WHY was this again?
 // if ($this->getParentWriter()->getStylesConditionalHashTable()->getIndexForHashCode( $conditional->getHashCode() ) == '') {
 //    continue;
 // }
 if ($conditional->getConditionType() != PHPExcel_Style_Conditional::CONDITION_NONE) {
 // conditionalFormatting
 $objWriter->startElement('conditionalFormatting');
 $objWriter->writeAttribute('sqref',    $cellCoordinate);
 
 // cfRule
 $objWriter->startElement('cfRule');
 $objWriter->writeAttribute('type',        $conditional->getConditionType());
 $objWriter->writeAttribute('dxfId',        $this->getParentWriter()->getStylesConditionalHashTable()->getIndexForHashCode( $conditional->getHashCode() ));
 $objWriter->writeAttribute('priority',    $id++);
 
 if (($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CELLIS
 ||
 $conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CONTAINSTEXT)
 && $conditional->getOperatorType() != PHPExcel_Style_Conditional::OPERATOR_NONE) {
 $objWriter->writeAttribute('operator',    $conditional->getOperatorType());
 }
 
 if ($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CONTAINSTEXT
 && !is_null($conditional->getText())) {
 $objWriter->writeAttribute('text',    $conditional->getText());
 }
 
 if ($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CONTAINSTEXT
 && $conditional->getOperatorType() == PHPExcel_Style_Conditional::OPERATOR_CONTAINSTEXT
 && !is_null($conditional->getText())) {
 $objWriter->writeElement('formula',    'NOT(ISERROR(SEARCH("' . $conditional->getText() . '",' . $cellCoordinate . ')))');
 } else if ($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CONTAINSTEXT
 && $conditional->getOperatorType() == PHPExcel_Style_Conditional::OPERATOR_BEGINSWITH
 && !is_null($conditional->getText())) {
 $objWriter->writeElement('formula',    'LEFT(' . $cellCoordinate . ',' . strlen($conditional->getText()) . ')="' . $conditional->getText() . '"');
 } else if ($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CONTAINSTEXT
 && $conditional->getOperatorType() == PHPExcel_Style_Conditional::OPERATOR_ENDSWITH
 && !is_null($conditional->getText())) {
 $objWriter->writeElement('formula',    'RIGHT(' . $cellCoordinate . ',' . strlen($conditional->getText()) . ')="' . $conditional->getText() . '"');
 } else if ($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CONTAINSTEXT
 && $conditional->getOperatorType() == PHPExcel_Style_Conditional::OPERATOR_NOTCONTAINS
 && !is_null($conditional->getText())) {
 $objWriter->writeElement('formula',    'ISERROR(SEARCH("' . $conditional->getText() . '",' . $cellCoordinate . '))');
 } else if ($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CELLIS
 || $conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CONTAINSTEXT
 || $conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_EXPRESSION) {
 foreach ($conditional->getConditions() as $formula) {
 // Formula
 $objWriter->writeElement('formula',    $formula);
 }
 }
 
 $objWriter->endElement();
 
 $objWriter->endElement();
 }
 }
 }
 }
 
 /**
 * Write DataValidations
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeDataValidations(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // Datavalidation collection
 $dataValidationCollection = $pSheet->getDataValidationCollection();
 
 // Write data validations?
 if (!empty($dataValidationCollection)) {
 $objWriter->startElement('dataValidations');
 $objWriter->writeAttribute('count', count($dataValidationCollection));
 
 foreach ($dataValidationCollection as $coordinate => $dv) {
 $objWriter->startElement('dataValidation');
 
 if ($dv->getType() != '') {
 $objWriter->writeAttribute('type', $dv->getType());
 }
 
 if ($dv->getErrorStyle() != '') {
 $objWriter->writeAttribute('errorStyle', $dv->getErrorStyle());
 }
 
 if ($dv->getOperator() != '') {
 $objWriter->writeAttribute('operator', $dv->getOperator());
 }
 
 $objWriter->writeAttribute('allowBlank',        ($dv->getAllowBlank()        ? '1'  : '0'));
 $objWriter->writeAttribute('showDropDown',        (!$dv->getShowDropDown()    ? '1'  : '0'));
 $objWriter->writeAttribute('showInputMessage',    ($dv->getShowInputMessage()    ? '1'  : '0'));
 $objWriter->writeAttribute('showErrorMessage',    ($dv->getShowErrorMessage()    ? '1'  : '0'));
 
 if ($dv->getErrorTitle() !== '') {
 $objWriter->writeAttribute('errorTitle', $dv->getErrorTitle());
 }
 if ($dv->getError() !== '') {
 $objWriter->writeAttribute('error', $dv->getError());
 }
 if ($dv->getPromptTitle() !== '') {
 $objWriter->writeAttribute('promptTitle', $dv->getPromptTitle());
 }
 if ($dv->getPrompt() !== '') {
 $objWriter->writeAttribute('prompt', $dv->getPrompt());
 }
 
 $objWriter->writeAttribute('sqref', $coordinate);
 
 if ($dv->getFormula1() !== '') {
 $objWriter->writeElement('formula1', $dv->getFormula1());
 }
 if ($dv->getFormula2() !== '') {
 $objWriter->writeElement('formula2', $dv->getFormula2());
 }
 
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 }
 
 /**
 * Write Hyperlinks
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeHyperlinks(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // Hyperlink collection
 $hyperlinkCollection = $pSheet->getHyperlinkCollection();
 
 // Relation ID
 $relationId = 1;
 
 // Write hyperlinks?
 if (!empty($hyperlinkCollection)) {
 $objWriter->startElement('hyperlinks');
 
 foreach ($hyperlinkCollection as $coordinate => $hyperlink) {
 $objWriter->startElement('hyperlink');
 
 $objWriter->writeAttribute('ref', $coordinate);
 if (!$hyperlink->isInternal()) {
 $objWriter->writeAttribute('r:id',    'rId_hyperlink_' . $relationId);
 ++$relationId;
 } else {
 $objWriter->writeAttribute('location',    str_replace('sheet://', '', $hyperlink->getUrl()));
 }
 
 if ($hyperlink->getTooltip() != '') {
 $objWriter->writeAttribute('tooltip', $hyperlink->getTooltip());
 }
 
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 }
 
 /**
 * Write ProtectedRanges
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeProtectedRanges(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 if (count($pSheet->getProtectedCells()) > 0) {
 // protectedRanges
 $objWriter->startElement('protectedRanges');
 
 // Loop protectedRanges
 foreach ($pSheet->getProtectedCells() as $protectedCell => $passwordHash) {
 // protectedRange
 $objWriter->startElement('protectedRange');
 $objWriter->writeAttribute('name',        'p' . md5($protectedCell));
 $objWriter->writeAttribute('sqref',    $protectedCell);
 $objWriter->writeAttribute('password',    $passwordHash);
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 }
 
 /**
 * Write MergeCells
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeMergeCells(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 if (count($pSheet->getMergeCells()) > 0) {
 // mergeCells
 $objWriter->startElement('mergeCells');
 
 // Loop mergeCells
 foreach ($pSheet->getMergeCells() as $mergeCell) {
 // mergeCell
 $objWriter->startElement('mergeCell');
 $objWriter->writeAttribute('ref', $mergeCell);
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 }
 
 /**
 * Write PrintOptions
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writePrintOptions(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // printOptions
 $objWriter->startElement('printOptions');
 
 $objWriter->writeAttribute('gridLines',    ($pSheet->getPrintGridlines() ? 'true': 'false'));
 $objWriter->writeAttribute('gridLinesSet',    'true');
 
 if ($pSheet->getPageSetup()->getHorizontalCentered()) {
 $objWriter->writeAttribute('horizontalCentered', 'true');
 }
 
 if ($pSheet->getPageSetup()->getVerticalCentered()) {
 $objWriter->writeAttribute('verticalCentered', 'true');
 }
 
 $objWriter->endElement();
 }
 
 /**
 * Write PageMargins
 *
 * @param    PHPExcel_Shared_XMLWriter                $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                        $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writePageMargins(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // pageMargins
 $objWriter->startElement('pageMargins');
 $objWriter->writeAttribute('left',        PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getLeft()));
 $objWriter->writeAttribute('right',        PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getRight()));
 $objWriter->writeAttribute('top',        PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getTop()));
 $objWriter->writeAttribute('bottom',    PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getBottom()));
 $objWriter->writeAttribute('header',    PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getHeader()));
 $objWriter->writeAttribute('footer',    PHPExcel_Shared_String::FormatNumber($pSheet->getPageMargins()->getFooter()));
 $objWriter->endElement();
 }
 
 /**
 * Write AutoFilter
 *
 * @param    PHPExcel_Shared_XMLWriter                $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                        $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeAutoFilter(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 $autoFilterRange = $pSheet->getAutoFilter()->getRange();
 if (!empty($autoFilterRange)) {
 // autoFilter
 $objWriter->startElement('autoFilter');
 
 // Strip any worksheet reference from the filter coordinates
 $range = PHPExcel_Cell::splitRange($autoFilterRange);
 $range = $range[0];
 //    Strip any worksheet ref
 if (strpos($range[0],'!') !== false) {
 list($ws,$range[0]) = explode('!',$range[0]);
 }
 $range = implode(':', $range);
 
 $objWriter->writeAttribute('ref',    str_replace('$','',$range));
 
 $columns = $pSheet->getAutoFilter()->getColumns();
 if (count($columns > 0)) {
 foreach($columns as $columnID => $column) {
 $rules = $column->getRules();
 if (count($rules > 0)) {
 $objWriter->startElement('filterColumn');
 $objWriter->writeAttribute('colId',    $pSheet->getAutoFilter()->getColumnOffset($columnID));
 
 $objWriter->startElement( $column->getFilterType());
 if ($column->getJoin() == PHPExcel_Worksheet_AutoFilter_Column::AUTOFILTER_COLUMN_JOIN_AND) {
 $objWriter->writeAttribute('and',    1);
 }
 
 foreach ($rules as $rule) {
 if (($column->getFilterType() === PHPExcel_Worksheet_AutoFilter_Column::AUTOFILTER_FILTERTYPE_FILTER) &&
 ($rule->getOperator() === PHPExcel_Worksheet_AutoFilter_Column_Rule::AUTOFILTER_COLUMN_RULE_EQUAL) &&
 ($rule->getValue() === '')) {
 //    Filter rule for Blanks
 $objWriter->writeAttribute('blank',    1);
 } elseif($rule->getRuleType() === PHPExcel_Worksheet_AutoFilter_Column_Rule::AUTOFILTER_RULETYPE_DYNAMICFILTER) {
 //    Dynamic Filter Rule
 $objWriter->writeAttribute('type', $rule->getGrouping());
 $val = $column->getAttribute('val');
 if ($val !== NULL) {
 $objWriter->writeAttribute('val', $val);
 }
 $maxVal = $column->getAttribute('maxVal');
 if ($maxVal !== NULL) {
 $objWriter->writeAttribute('maxVal', $maxVal);
 }
 } elseif($rule->getRuleType() === PHPExcel_Worksheet_AutoFilter_Column_Rule::AUTOFILTER_RULETYPE_TOPTENFILTER) {
 //    Top 10 Filter Rule
 $objWriter->writeAttribute('val',    $rule->getValue());
 $objWriter->writeAttribute('percent',    (($rule->getOperator() === PHPExcel_Worksheet_AutoFilter_Column_Rule::AUTOFILTER_COLUMN_RULE_TOPTEN_PERCENT) ? '1' : '0'));
 $objWriter->writeAttribute('top',    (($rule->getGrouping() === PHPExcel_Worksheet_AutoFilter_Column_Rule::AUTOFILTER_COLUMN_RULE_TOPTEN_TOP) ? '1': '0'));
 } else {
 //    Filter, DateGroupItem or CustomFilter
 $objWriter->startElement($rule->getRuleType());
 
 if ($rule->getOperator() !== PHPExcel_Worksheet_AutoFilter_Column_Rule::AUTOFILTER_COLUMN_RULE_EQUAL) {
 $objWriter->writeAttribute('operator',    $rule->getOperator());
 }
 if ($rule->getRuleType() === PHPExcel_Worksheet_AutoFilter_Column_Rule::AUTOFILTER_RULETYPE_DATEGROUP) {
 // Date Group filters
 foreach($rule->getValue() as $key => $value) {
 if ($value > '') $objWriter->writeAttribute($key,    $value);
 }
 $objWriter->writeAttribute('dateTimeGrouping',    $rule->getGrouping());
 } else {
 $objWriter->writeAttribute('val',    $rule->getValue());
 }
 
 $objWriter->endElement();
 }
 }
 
 $objWriter->endElement();
 
 $objWriter->endElement();
 }
 }
 }
 
 $objWriter->endElement();
 }
 }
 
 /**
 * Write PageSetup
 *
 * @param    PHPExcel_Shared_XMLWriter            $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                    $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writePageSetup(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // pageSetup
 $objWriter->startElement('pageSetup');
 $objWriter->writeAttribute('paperSize',        $pSheet->getPageSetup()->getPaperSize());
 $objWriter->writeAttribute('orientation',    $pSheet->getPageSetup()->getOrientation());
 
 if (!is_null($pSheet->getPageSetup()->getScale())) {
 $objWriter->writeAttribute('scale',                 $pSheet->getPageSetup()->getScale());
 }
 if (!is_null($pSheet->getPageSetup()->getFitToHeight())) {
 $objWriter->writeAttribute('fitToHeight',         $pSheet->getPageSetup()->getFitToHeight());
 } else {
 $objWriter->writeAttribute('fitToHeight',         '0');
 }
 if (!is_null($pSheet->getPageSetup()->getFitToWidth())) {
 $objWriter->writeAttribute('fitToWidth',         $pSheet->getPageSetup()->getFitToWidth());
 } else {
 $objWriter->writeAttribute('fitToWidth',         '0');
 }
 if (!is_null($pSheet->getPageSetup()->getFirstPageNumber())) {
 $objWriter->writeAttribute('firstPageNumber',    $pSheet->getPageSetup()->getFirstPageNumber());
 $objWriter->writeAttribute('useFirstPageNumber', '1');
 }
 
 $objWriter->endElement();
 }
 
 /**
 * Write Header / Footer
 *
 * @param    PHPExcel_Shared_XMLWriter        $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeHeaderFooter(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // headerFooter
 $objWriter->startElement('headerFooter');
 $objWriter->writeAttribute('differentOddEven',    ($pSheet->getHeaderFooter()->getDifferentOddEven() ? 'true' : 'false'));
 $objWriter->writeAttribute('differentFirst',    ($pSheet->getHeaderFooter()->getDifferentFirst() ? 'true' : 'false'));
 $objWriter->writeAttribute('scaleWithDoc',        ($pSheet->getHeaderFooter()->getScaleWithDocument() ? 'true' : 'false'));
 $objWriter->writeAttribute('alignWithMargins',    ($pSheet->getHeaderFooter()->getAlignWithMargins() ? 'true' : 'false'));
 
 $objWriter->writeElement('oddHeader',        $pSheet->getHeaderFooter()->getOddHeader());
 $objWriter->writeElement('oddFooter',        $pSheet->getHeaderFooter()->getOddFooter());
 $objWriter->writeElement('evenHeader',        $pSheet->getHeaderFooter()->getEvenHeader());
 $objWriter->writeElement('evenFooter',        $pSheet->getHeaderFooter()->getEvenFooter());
 $objWriter->writeElement('firstHeader',    $pSheet->getHeaderFooter()->getFirstHeader());
 $objWriter->writeElement('firstFooter',    $pSheet->getHeaderFooter()->getFirstFooter());
 $objWriter->endElement();
 }
 
 /**
 * Write Breaks
 *
 * @param    PHPExcel_Shared_XMLWriter        $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeBreaks(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // Get row and column breaks
 $aRowBreaks = array();
 $aColumnBreaks = array();
 foreach ($pSheet->getBreaks() as $cell => $breakType) {
 if ($breakType == PHPExcel_Worksheet::BREAK_ROW) {
 $aRowBreaks[] = $cell;
 } else if ($breakType == PHPExcel_Worksheet::BREAK_COLUMN) {
 $aColumnBreaks[] = $cell;
 }
 }
 
 // rowBreaks
 if (!empty($aRowBreaks)) {
 $objWriter->startElement('rowBreaks');
 $objWriter->writeAttribute('count',            count($aRowBreaks));
 $objWriter->writeAttribute('manualBreakCount',    count($aRowBreaks));
 
 foreach ($aRowBreaks as $cell) {
 $coords = PHPExcel_Cell::coordinateFromString($cell);
 
 $objWriter->startElement('brk');
 $objWriter->writeAttribute('id',    $coords[1]);
 $objWriter->writeAttribute('man',    '1');
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 
 // Second, write column breaks
 if (!empty($aColumnBreaks)) {
 $objWriter->startElement('colBreaks');
 $objWriter->writeAttribute('count',            count($aColumnBreaks));
 $objWriter->writeAttribute('manualBreakCount',    count($aColumnBreaks));
 
 foreach ($aColumnBreaks as $cell) {
 $coords = PHPExcel_Cell::coordinateFromString($cell);
 
 $objWriter->startElement('brk');
 $objWriter->writeAttribute('id',    PHPExcel_Cell::columnIndexFromString($coords[0]) - 1);
 $objWriter->writeAttribute('man',    '1');
 $objWriter->endElement();
 }
 
 $objWriter->endElement();
 }
 }
 
 /**
 * Write SheetData
 *
 * @param    PHPExcel_Shared_XMLWriter        $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                $pSheet            Worksheet
 * @param    string[]                        $pStringTable    String table
 * @throws    Exception
 */
 private function _writeSheetData(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $pStringTable = null)
 {
 if (is_array($pStringTable)) {
 // Flipped stringtable, for faster index searching
 $aFlippedStringTable = $this->getParentWriter()->getWriterPart('stringtable')->flipStringTable($pStringTable);
 
 // sheetData
 $objWriter->startElement('sheetData');
 
 // Get column count
 $colCount = PHPExcel_Cell::columnIndexFromString($pSheet->getHighestColumn());
 
 // Highest row number
 $highestRow = $pSheet->getHighestRow();
 
 // Loop through cells
 $cellsByRow = array();
 foreach ($pSheet->getCellCollection() as $cellID) {
 $cellAddress = PHPExcel_Cell::coordinateFromString($cellID);
 $cellsByRow[$cellAddress[1]][] = $cellID;
 }
 
 $currentRow = 0;
 while($currentRow++ < $highestRow) {
 // Get row dimension
 $rowDimension = $pSheet->getRowDimension($currentRow);
 
 // Write current row?
 $writeCurrentRow =    isset($cellsByRow[$currentRow]) ||
 $rowDimension->getRowHeight() >= 0 ||
 $rowDimension->getVisible() == false ||
 $rowDimension->getCollapsed() == true ||
 $rowDimension->getOutlineLevel() > 0 ||
 $rowDimension->getXfIndex() !== null;
 
 if ($writeCurrentRow) {
 // Start a new row
 $objWriter->startElement('row');
 $objWriter->writeAttribute('r',    $currentRow);
 $objWriter->writeAttribute('spans',    '1:' . $colCount);
 
 // Row dimensions
 if ($rowDimension->getRowHeight() >= 0) {
 $objWriter->writeAttribute('customHeight',    '1');
 $objWriter->writeAttribute('ht',            PHPExcel_Shared_String::FormatNumber($rowDimension->getRowHeight()));
 }
 
 // Row visibility
 if ($rowDimension->getVisible() == false) {
 $objWriter->writeAttribute('hidden',        'true');
 }
 
 // Collapsed
 if ($rowDimension->getCollapsed() == true) {
 $objWriter->writeAttribute('collapsed',        'true');
 }
 
 // Outline level
 if ($rowDimension->getOutlineLevel() > 0) {
 $objWriter->writeAttribute('outlineLevel',    $rowDimension->getOutlineLevel());
 }
 
 // Style
 if ($rowDimension->getXfIndex() !== null) {
 $objWriter->writeAttribute('s',    $rowDimension->getXfIndex());
 $objWriter->writeAttribute('customFormat', '1');
 }
 
 // Write cells
 if (isset($cellsByRow[$currentRow])) {
 foreach($cellsByRow[$currentRow] as $cellAddress) {
 // Write cell
 $this->_writeCell($objWriter, $pSheet, $cellAddress, $pStringTable, $aFlippedStringTable);
 }
 }
 
 // End row
 $objWriter->endElement();
 }
 }
 
 $objWriter->endElement();
 } else {
 throw new Exception("Invalid parameters passed.");
 }
 }
 
 /**
 * Write Cell
 *
 * @param    PHPExcel_Shared_XMLWriter    $objWriter                XML Writer
 * @param    PHPExcel_Worksheet            $pSheet                    Worksheet
 * @param    PHPExcel_Cell                $pCellAddress            Cell Address
 * @param    string[]                    $pStringTable            String table
 * @param    string[]                    $pFlippedStringTable    String table (flipped), for faster index searching
 * @throws    Exception
 */
 private function _writeCell(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $pCellAddress = null, $pStringTable = null, $pFlippedStringTable = null)
 {
 if (is_array($pStringTable) && is_array($pFlippedStringTable)) {
 // Cell
 $pCell = $pSheet->getCell($pCellAddress);
 $objWriter->startElement('c');
 $objWriter->writeAttribute('r', $pCellAddress);
 
 // Sheet styles
 if ($pCell->getXfIndex() != '') {
 $objWriter->writeAttribute('s', $pCell->getXfIndex());
 }
 
 // If cell value is supplied, write cell value
 $cellValue = $pCell->getValue();
 if (is_object($cellValue) || $cellValue !== '') {
 // Map type
 $mappedType = $pCell->getDataType();
 
 // Write data type depending on its type
 switch (strtolower($mappedType)) {
 case 'inlinestr':    // Inline string
 case 's':            // String
 case 'b':            // Boolean
 $objWriter->writeAttribute('t', $mappedType);
 break;
 case 'f':            // Formula
 $calculatedValue = null;
 if ($this->getParentWriter()->getPreCalculateFormulas()) {
 $calculatedValue = $pCell->getCalculatedValue();
 } else {
 $calculatedValue = $cellValue;
 }
 if (is_string($calculatedValue)) {
 $objWriter->writeAttribute('t', 'str');
 }
 break;
 case 'e':            // Error
 $objWriter->writeAttribute('t', $mappedType);
 }
 
 // Write data depending on its type
 switch (strtolower($mappedType)) {
 case 'inlinestr':    // Inline string
 if (! $cellValue instanceof PHPExcel_RichText) {
 $objWriter->writeElement('t', PHPExcel_Shared_String::ControlCharacterPHP2OOXML( htmlspecialchars($cellValue) ) );
 } else if ($cellValue instanceof PHPExcel_RichText) {
 $objWriter->startElement('is');
 $this->getParentWriter()->getWriterPart('stringtable')->writeRichText($objWriter, $cellValue);
 $objWriter->endElement();
 }
 
 break;
 case 's':            // String
 if (! $cellValue instanceof PHPExcel_RichText) {
 if (isset($pFlippedStringTable[$cellValue])) {
 $objWriter->writeElement('v', $pFlippedStringTable[$cellValue]);
 }
 } else if ($cellValue instanceof PHPExcel_RichText) {
 $objWriter->writeElement('v', $pFlippedStringTable[$cellValue->getHashCode()]);
 }
 
 break;
 case 'f':            // Formula
 $attributes = $pCell->getFormulaAttributes();
 if($attributes['t'] == 'array') {
 $objWriter->startElement('f');
 $objWriter->writeAttribute('t', 'array');
 $objWriter->writeAttribute('ref', $pCellAddress);
 $objWriter->writeAttribute('aca', '1');
 $objWriter->writeAttribute('ca', '1');
 $objWriter->text(substr($cellValue, 1));
 $objWriter->endElement();
 } else {
 $objWriter->writeElement('f', substr($cellValue, 1));
 }
 if ($this->getParentWriter()->getOffice2003Compatibility() === false) {
 if ($this->getParentWriter()->getPreCalculateFormulas()) {
 $calculatedValue = $pCell->getCalculatedValue();
 if (!is_array($calculatedValue) && substr($calculatedValue, 0, 1) != '#') {
 $objWriter->writeElement('v', PHPExcel_Shared_String::FormatNumber($calculatedValue));
 } else {
 $objWriter->writeElement('v', '0');
 }
 } else {
 $objWriter->writeElement('v', '0');
 }
 }
 break;
 case 'n':            // Numeric
 // force point as decimal separator in case current locale uses comma
 $objWriter->writeElement('v', str_replace(',', '.', $cellValue));
 break;
 case 'b':            // Boolean
 $objWriter->writeElement('v', ($cellValue ? '1' : '0'));
 break;
 case 'e':            // Error
 if (substr($cellValue, 0, 1) == '=') {
 $objWriter->writeElement('f', substr($cellValue, 1));
 $objWriter->writeElement('v', substr($cellValue, 1));
 } else {
 $objWriter->writeElement('v', $cellValue);
 }
 
 break;
 }
 }
 
 $objWriter->endElement();
 } else {
 throw new Exception("Invalid parameters passed.");
 }
 }
 
 /**
 * Write Drawings
 *
 * @param    PHPExcel_Shared_XMLWriter    $objWriter        XML Writer
 * @param    PHPExcel_Worksheet            $pSheet            Worksheet
 * @param    boolean                        $includeCharts    Flag indicating if we should include drawing details for charts
 * @throws    Exception
 */
 private function _writeDrawings(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $includeCharts = FALSE)
 {
 $chartCount = ($includeCharts) ? $pSheet->getChartCollection()->count() : 0;
 // If sheet contains drawings, add the relationships
 if (($pSheet->getDrawingCollection()->count() > 0) ||
 ($chartCount > 0)) {
 $objWriter->startElement('drawing');
 $objWriter->writeAttribute('r:id', 'rId1');
 $objWriter->endElement();
 }
 }
 
 /**
 * Write LegacyDrawing
 *
 * @param    PHPExcel_Shared_XMLWriter        $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeLegacyDrawing(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // If sheet contains comments, add the relationships
 if (count($pSheet->getComments()) > 0) {
 $objWriter->startElement('legacyDrawing');
 $objWriter->writeAttribute('r:id', 'rId_comments_vml1');
 $objWriter->endElement();
 }
 }
 
 /**
 * Write LegacyDrawingHF
 *
 * @param    PHPExcel_Shared_XMLWriter        $objWriter        XML Writer
 * @param    PHPExcel_Worksheet                $pSheet            Worksheet
 * @throws    Exception
 */
 private function _writeLegacyDrawingHF(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 {
 // If sheet contains images, add the relationships
 if (count($pSheet->getHeaderFooter()->getImages()) > 0) {
 $objWriter->startElement('legacyDrawingHF');
 $objWriter->writeAttribute('r:id', 'rId_headerfooter_vml1');
 $objWriter->endElement();
 }
 }
 }
 
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