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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\HTML\Style;
19
20use PhpOffice\PhpWord\Style\AbstractStyle as StyleAbstract;
21use PhpOffice\PhpWord\Writer\HTML;
22
23/**
24 * Style writer.
25 *
26 * @since 0.10.0
27 */
28abstract class AbstractStyle
29{
30    /**
31     * Parent writer.
32     *
33     * @var HTML
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 HTML $writer
65     */
66    public function setParentWriter($writer): void
67    {
68        $this->parentWriter = $writer;
69    }
70
71    /**
72     * Get parent writer.
73     *
74     * @return HTML
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     * Takes array where of CSS properties / values and converts to CSS string.
97     *
98     * @param array $css
99     *
100     * @return string
101     */
102    protected function assembleCss($css)
103    {
104        $pairs = [];
105        $string = '';
106        foreach ($css as $key => $value) {
107            if ($value != '') {
108                $pairs[] = $key . ': ' . $value;
109            }
110        }
111        if (!empty($pairs)) {
112            $string = implode('; ', $pairs) . ';';
113        }
114
115        return $string;
116    }
117
118    /**
119     * Get value if ...
120     *
121     * @param null|bool $condition
122     * @param string $value
123     *
124     * @return string
125     */
126    protected function getValueIf($condition, $value)
127    {
128        return $condition == true ? $value : '';
129    }
130}