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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\Style\AbstractStyle as StyleAbstract;
21use PhpOffice\PhpWord\Writer\RTF;
22
23/**
24 * Abstract RTF style writer.
25 *
26 * @since 0.11.0
27 */
28abstract class AbstractStyle
29{
30    /**
31     * Parent writer.
32     *
33     * @var RTF
34     */
35    private $parentWriter;
36
37    /**
38     * Style.
39     *
40     * @var null|array|StyleAbstract
41     */
42    private $style;
43
44    /**
45     * Write style.
46     *
47     * @return mixed
48     */
49    abstract public function write();
50
51    /**
52     * Create new instance.
53     *
54     * @param array|StyleAbstract $style
55     */
56    public function __construct($style = null)
57    {
58        $this->style = $style;
59    }
60
61    /**
62     * Set parent writer.
63     *
64     * @param RTF $writer
65     */
66    public function setParentWriter($writer): void
67    {
68        $this->parentWriter = $writer;
69    }
70
71    /**
72     * Get parent writer.
73     *
74     * @return RTF
75     */
76    public function getParentWriter()
77    {
78        return $this->parentWriter;
79    }
80
81    /**
82     * Get style.
83     *
84     * @return null|array|string|StyleAbstract
85     */
86    public function getStyle()
87    {
88        if (!$this->style instanceof StyleAbstract && !is_array($this->style)) {
89            return '';
90        }
91
92        return $this->style;
93    }
94
95    /**
96     * Get value if ...
97     *
98     * @param null|bool $condition
99     * @param string $value
100     *
101     * @return string
102     */
103    protected function getValueIf($condition, $value)
104    {
105        return $condition == true ? $value : '';
106    }
107}