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1<?php
2/**
3 * This file is part of PHPWord - A pure PHP library for reading and writing
4 * word processing documents.
5 *
6 * PHPWord is free software distributed under the terms of the GNU Lesser
7 * General Public License version 3 as published by the Free Software Foundation.
8 *
9 * For the full copyright and license information, please read the LICENSE
10 * file that was distributed with this source code. For the full list of
11 * contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
12 *
13 * @see         https://github.com/PHPOffice/PHPWord
14 *
15 * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
16 */
17
18namespace PhpOffice\PhpWord\Writer\RTF\Style;
19
20use PhpOffice\PhpWord\SimpleType\Jc;
21
22/**
23 * RTF paragraph style writer.
24 *
25 * @since 0.11.0
26 */
27class Paragraph extends AbstractStyle
28{
29    /**
30     * Depth of table container nested level; Primarily used for RTF writer/reader.
31     *
32     * 0 = Not in a table; 1 = in a table; 2 = in a table inside another table, etc.
33     *
34     * @var int
35     */
36    private $nestedLevel = 0;
37
38    private const LEFT = Jc::LEFT;
39    private const RIGHT = Jc::RIGHT;
40    private const JUSTIFY = Jc::JUSTIFY;
41
42    /**
43     * Write style.
44     *
45     * @return string
46     */
47    public function write()
48    {
49        $style = $this->getStyle();
50        if (!$style instanceof \PhpOffice\PhpWord\Style\Paragraph) {
51            return '';
52        }
53
54        $alignments = [
55            Jc::START => '\ql',
56            Jc::END => '\qr',
57            Jc::CENTER => '\qc',
58            Jc::BOTH => '\qj',
59            self::LEFT => '\ql',
60            self::RIGHT => '\qr',
61            self::JUSTIFY => '\qj',
62        ];
63        $bidiAlignments = [
64            Jc::START => '\qr',
65            Jc::END => '\ql',
66            Jc::CENTER => '\qc',
67            Jc::BOTH => '\qj',
68            self::LEFT => '\ql',
69            self::RIGHT => '\qr',
70            self::JUSTIFY => '\qj',
71        ];
72
73        $spaceAfter = $style->getSpaceAfter();
74        $spaceBefore = $style->getSpaceBefore();
75
76        $content = '';
77        if ($this->nestedLevel == 0) {
78            $content .= '\pard\nowidctlpar ';
79        }
80        $alignment = $style->getAlignment();
81        $bidi = $style->isBidi();
82        if ($alignment === '' && $bidi !== null) {
83            $alignment = Jc::START;
84        }
85        if (isset($alignments[$alignment])) {
86            $content .= $bidi ? $bidiAlignments[$alignment] : $alignments[$alignment];
87        }
88        $content .= $this->writeIndentation($style->getIndentation());
89        $content .= $this->getValueIf($spaceBefore !== null, '\sb' . round($spaceBefore ?? 0));
90        $content .= $this->getValueIf($spaceAfter !== null, '\sa' . round($spaceAfter ?? 0));
91        $lineHeight = $style->getLineHeight();
92        if ($lineHeight) {
93            $lineHeightAdjusted = (int) ($lineHeight * 240);
94            $content .= "\\sl$lineHeightAdjusted\\slmult1";
95        }
96        if ($style->hasPageBreakBefore()) {
97            $content .= '\\page';
98        }
99
100        $styles = $style->getStyleValues();
101        $content .= $this->writeTabs($styles['tabs']);
102
103        return $content;
104    }
105
106    /**
107     * Writes an \PhpOffice\PhpWord\Style\Indentation.
108     *
109     * @param null|\PhpOffice\PhpWord\Style\Indentation $indent
110     *
111     * @return string
112     */
113    private function writeIndentation($indent = null)
114    {
115        if (isset($indent) && $indent instanceof \PhpOffice\PhpWord\Style\Indentation) {
116            $writer = new Indentation($indent);
117
118            return $writer->write();
119        }
120
121        return '';
122    }
123
124    /**
125     * Writes tabs.
126     *
127     * @param \PhpOffice\PhpWord\Style\Tab[] $tabs
128     *
129     * @return string
130     */
131    private function writeTabs($tabs = null)
132    {
133        $content = '';
134        if (!empty($tabs)) {
135            foreach ($tabs as $tab) {
136                $styleWriter = new Tab($tab);
137                $content .= $styleWriter->write();
138            }
139        }
140
141        return $content;
142    }
143
144    /**
145     * Set nested level.
146     *
147     * @param int $value
148     */
149    public function setNestedLevel($value): void
150    {
151        $this->nestedLevel = $value;
152    }
153}