<?php
/**
 * This file is part of PHPWord - A pure PHP library for reading and writing
* word processing documents.
*
* PHPWord is free software distributed under the terms of the GNU Lesser
* General Public License version 3 as published by the Free Software Foundation.
*
* For the full copyright and license information, please read the LICENSE
* file that was distributed with this source code. For the full list of
* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
*
* @link        https://github.com/PHPOffice/PHPWord
* @copyright   2010-2014 PHPWord contributors
* @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
*/

namespace PhpOffice\PhpWord\Writer\Word2007\Style;

use PhpOffice\PhpWord\Style\TextBox as TextBoxStyle;

/**
 * TextBox style writer
 *
 */
class TextBox extends AbstractStyle
{
    /**
     * w10 namespace wrapping type
     *
     * @var string
     */
    private $w10wrap;

    /**
     * Write style
     */
    public function write()
    {
        if (!($this->style instanceof \PhpOffice\PhpWord\Style\TextBox)) {
            return;
        }

        $wrapping = $this->style->getWrappingStyle();
        $positioning = $this->style->getPositioning();

        // Default style array
        $styleArray = array(
            'mso-width-percent' => '0',
            'mso-height-percent' => '0',
            'mso-width-relative' => 'margin',
            'mso-height-relative' => 'margin',
        );
        $styleArray = array_merge($styleArray, $this->getElementStyle());

        // Absolute/relative positioning
        $styleArray['position'] = $positioning;
        if ($positioning == TextBoxStyle::POSITION_ABSOLUTE) {
            $styleArray['mso-position-horizontal-relative'] = 'page';
            $styleArray['mso-position-vertical-relative'] = 'page';
        } elseif ($positioning == TextBoxStyle::POSITION_RELATIVE) {
            $styleArray['mso-position-horizontal'] = $this->style->getPosHorizontal();
            $styleArray['mso-position-vertical'] = $this->style->getPosVertical();
            $styleArray['mso-position-horizontal-relative'] = $this->style->getPosHorizontalRel();
            $styleArray['mso-position-vertical-relative'] = $this->style->getPosVerticalRel();
            $styleArray['margin-left'] = 0;
            $styleArray['margin-top'] = 0;
        }

        // Wrapping style
        if ($wrapping == TextBoxStyle::WRAPPING_STYLE_INLINE) {
            // Nothing to do when inline
        } elseif ($wrapping == TextBoxStyle::WRAPPING_STYLE_BEHIND) {
            $styleArray['z-index'] = -251658752;
        } else {
            $styleArray['z-index'] = 251659264;
            $styleArray['mso-position-horizontal'] = 'absolute';
            $styleArray['mso-position-vertical'] = 'absolute';
        }

        // w10 wrapping
        if ($wrapping == TextBoxStyle::WRAPPING_STYLE_SQUARE) {
            $this->w10wrap = 'square';
        } elseif ($wrapping == TextBoxStyle::WRAPPING_STYLE_TIGHT) {
            $this->w10wrap = 'tight';
        }

        $textboxStyle = $this->assembleStyle($styleArray);

        $this->xmlWriter->writeAttribute('style', $textboxStyle);

        $borderSize = $this->style->getBorderSize();
        if ($borderSize !== null) {
            $this->xmlWriter->writeAttribute('strokeweight', $this->style->getBorderSize().'pt');
        }
        
        $borderColor = $this->style->getBorderColor();
        if (empty($borderColor)) {
            $this->xmlWriter->writeAttribute('stroked', 'f');
        } else {
            $this->xmlWriter->writeAttribute('strokecolor', $borderColor);
        }
        //@todo <v:stroke dashstyle="dashDot" linestyle="thickBetweenThin"/>
        
    }

    /**
     * Write w10 wrapping
     *
     * @return array
     */
    public function writeW10Wrap()
    {
        if (!is_null($this->w10wrap)) {
            $this->xmlWriter->startElement('w10:wrap');
            $this->xmlWriter->writeAttribute('type', $this->w10wrap);
            
            switch ($this->style->getPositioning()) {
                case TextBoxStyle::POSITION_ABSOLUTE:
                    $this->xmlWriter->writeAttribute('anchorx', "page");
                    $this->xmlWriter->writeAttribute('anchory', "page");
                    break;
                case TextBoxStyle::POSITION_RELATIVE:
                    switch ($this->style->getPosVerticalRel()) {
                        case TextBoxStyle::POSITION_RELATIVE_TO_MARGIN:
                            $this->xmlWriter->writeAttribute('anchory', "margin");
                            break;
                        case TextBoxStyle::POSITION_RELATIVE_TO_PAGE:
                            $this->xmlWriter->writeAttribute('anchory', "page");
                            break;
                        case TextBoxStyle::POSITION_RELATIVE_TO_TMARGIN:
                            $this->xmlWriter->writeAttribute('anchory', "margin");
                            break;
                        case TextBoxStyle::POSITION_RELATIVE_TO_BMARGIN:
                            $this->xmlWriter->writeAttribute('anchory', "page");
                            break;
                    }
                    switch ($this->style->getPosHorizontalRel()) {
                        case TextBoxStyle::POSITION_RELATIVE_TO_MARGIN:
                            $this->xmlWriter->writeAttribute('anchorx', "margin");
                            break;
                        case TextBoxStyle::POSITION_RELATIVE_TO_PAGE:
                            $this->xmlWriter->writeAttribute('anchorx', "page");
                            break;
                        case TextBoxStyle::POSITION_RELATIVE_TO_LMARGIN:
                            $this->xmlWriter->writeAttribute('anchorx', "margin");
                            break;
                        case TextBoxStyle::POSITION_RELATIVE_TO_RMARGIN:
                            $this->xmlWriter->writeAttribute('anchorx', "page");
                            break;
                    }
            }
            
            $this->xmlWriter->endElement(); // w10:wrap
        }
    }

    /**
     * Get element style
     *
     * @return array
     */
    private function getElementStyle()
    {
        $styles = array();
        $styleValues = array(
            'width' => $this->style->getWidth(),
            'height' => $this->style->getHeight(),
            'margin-top' => $this->style->getMarginTop(),
            'margin-left' => $this->style->getMarginLeft()
        );
        foreach ($styleValues as $key => $value) {
            if (!is_null($value) && $value != '') {
                $styles[$key] = $value . 'px';
            }
        }

        return $styles;
    }

    /**
     * Assemble style array into style string
     *
     * @param array $styles
     * @return string
     */
    private function assembleStyle($styles = array())
    {
        $style = '';
        foreach ($styles as $key => $value) {
            if (!is_null($value) && $value != '') {
                $style .= "{$key}:{$value}; ";
            }
        }

        return trim($style);
    }
}