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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_RichText
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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_RichText
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 *
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 * @category   PHPExcel
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 * @package    PHPExcel_RichText
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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_RichText implements PHPExcel_IComparable
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{
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    /**
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     * Rich text elements
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     *
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     * @var PHPExcel_RichText_ITextElement[]
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     */
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    private $_richTextElements;
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    /**
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     * Create a new PHPExcel_RichText instance
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     *
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     * @param PHPExcel_Cell $pCell
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     * @throws PHPExcel_Exception
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     */
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    public function __construct(PHPExcel_Cell $pCell = null)
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    {
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        // Initialise variables
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        $this->_richTextElements = array();
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        // Rich-Text string attached to cell?
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        if ($pCell !== NULL) {
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            // Add cell text and style
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            if ($pCell->getValue() != "") {
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                $objRun = new PHPExcel_RichText_Run($pCell->getValue());
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                $objRun->setFont(clone $pCell->getParent()->getStyle($pCell->getCoordinate())->getFont());
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                $this->addText($objRun);
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            }
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            // Set parent value
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            $pCell->setValueExplicit($this, PHPExcel_Cell_DataType::TYPE_STRING);
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        }
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    }
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    /**
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     * Add text
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     *
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     * @param PHPExcel_RichText_ITextElement $pText Rich text element
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     * @throws PHPExcel_Exception
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     * @return PHPExcel_RichText
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     */
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    public function addText(PHPExcel_RichText_ITextElement $pText = null)
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    {
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        $this->_richTextElements[] = $pText;
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        return $this;
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    }
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    /**
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     * Create text
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     *
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     * @param string $pText Text
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     * @return PHPExcel_RichText_TextElement
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     * @throws PHPExcel_Exception
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     */
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    public function createText($pText = '')
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    {
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        $objText = new PHPExcel_RichText_TextElement($pText);
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        $this->addText($objText);
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        return $objText;
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    }
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    /**
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     * Create text run
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     *
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     * @param string $pText Text
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     * @return PHPExcel_RichText_Run
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     * @throws PHPExcel_Exception
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     */
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    public function createTextRun($pText = '')
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    {
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        $objText = new PHPExcel_RichText_Run($pText);
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        $this->addText($objText);
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        return $objText;
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    }
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    /**
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     * Get plain text
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     *
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     * @return string
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     */
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    public function getPlainText()
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    {
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        // Return value
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        $returnValue = '';
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        // Loop through all PHPExcel_RichText_ITextElement
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        foreach ($this->_richTextElements as $text) {
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            $returnValue .= $text->getText();
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        }
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        // Return
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        return $returnValue;
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    }
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    /**
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     * Convert to string
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     *
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     * @return string
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     */
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    public function __toString()
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    {
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        return $this->getPlainText();
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    }
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    /**
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     * Get Rich Text elements
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     *
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     * @return PHPExcel_RichText_ITextElement[]
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     */
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    public function getRichTextElements()
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    {
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        return $this->_richTextElements;
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    }
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    /**
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     * Set Rich Text elements
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     *
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     * @param PHPExcel_RichText_ITextElement[] $pElements Array of elements
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     * @throws PHPExcel_Exception
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     * @return PHPExcel_RichText
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     */
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    public function setRichTextElements($pElements = null)
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    {
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        if (is_array($pElements)) {
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            $this->_richTextElements = $pElements;
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        } else {
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            throw new PHPExcel_Exception("Invalid PHPExcel_RichText_ITextElement[] array passed.");
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        }
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        return $this;
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    }
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    /**
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     * Get hash code
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     *
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     * @return string    Hash code
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     */
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    public function getHashCode()
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    {
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        $hashElements = '';
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        foreach ($this->_richTextElements as $element) {
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            $hashElements .= $element->getHashCode();
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        }
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        return md5(
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              $hashElements
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            . __CLASS__
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        );
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    }
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    /**
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     * Implement PHP __clone to create a deep clone, not just a shallow copy.
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     */
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    public function __clone()
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    {
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        $vars = get_object_vars($this);
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        foreach ($vars as $key => $value) {
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            if (is_object($value)) {
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                $this->$key = clone $value;
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            } else {
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                $this->$key = $value;
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            }
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        }
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    }
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}