xref: /webtrees/app/Elements/AbstractElement.php (revision 4dbb2a39d4ff3907e4739e53d4c0af9bf637bb4d) 
1<?php
2
3/**
4 * webtrees: online genealogy
5 * Copyright (C) 2021 webtrees development team
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 */
17
18declare(strict_types=1);
19
20namespace Fisharebest\Webtrees\Elements;
21
22use Fisharebest\Webtrees\Contracts\ElementInterface;
23use Fisharebest\Webtrees\Html;
24use Fisharebest\Webtrees\I18N;
25use Fisharebest\Webtrees\Tree;
26
27use function array_key_exists;
28use function array_map;
29use function array_search;
30use function e;
31use function is_numeric;
32use function preg_match;
33use function strpos;
34use function trim;
35use function view;
36
37/**
38 * A GEDCOM element is a tag/primitive in a GEDCOM file.
39 */
40abstract class AbstractElement implements ElementInterface
41{
42    protected const REGEX_URL = '~((https?|ftp]):)(//([^\s/?#<>]*))?([^\s?#<>]*)(\?([^\s#<>]*))?(#[^\s?#<>]+)?~';
43
44    // HTML attributes for an <input>
45    protected const MAXIMUM_LENGTH = false;
46    protected const PATTERN        = false;
47
48    // Which child elements can appear under this element.
49    protected const SUBTAGS = [];
50
51    /** @var string A label to describe this element */
52    private $label;
53
54    /** @var array<string,string> */
55    private $subtags;
56
57    /**
58     * AbstractGedcomElement constructor.
59     *
60     * @param string             $label
61     * @param array<string>|null $subtags
62     */
63    public function __construct(string $label, array $subtags = null)
64    {
65        $this->label   = $label;
66        $this->subtags = $subtags ?? static::SUBTAGS;
67    }
68
69    /**
70     * Convert a value to a canonical form.
71     *
72     * @param string $value
73     *
74     * @return string
75     */
76    public function canonical(string $value): string
77    {
78        $value = strtr($value, ["\t" => ' ', "\r" => ' ', "\n" => ' ']);
79
80        while (strpos($value, '  ') !== false) {
81            $value = strtr($value, ['  ' => ' ']);
82        }
83
84        return trim($value);
85    }
86
87    /**
88     * Create a default value for this element.
89     *
90     * @param Tree $tree
91     *
92     * @return string
93     */
94    public function default(Tree $tree): string
95    {
96        return '';
97    }
98
99    /**
100     * An edit control for this data.
101     *
102     * @param string $id
103     * @param string $name
104     * @param string $value
105     * @param Tree   $tree
106     *
107     * @return string
108     */
109    public function edit(string $id, string $name, string $value, Tree $tree): string
110    {
111        $values = $this->values();
112
113        if ($values !== []) {
114            $value = $this->canonical($value);
115
116            // Ensure the current data is in the list.
117            if (!array_key_exists($value, $values)) {
118                $values = [$value => $value] + $values;
119            }
120
121            // We may use markup to display values, but not when editing them.
122            $values = array_map('strip_tags', $values);
123
124            return view('components/select', [
125                'id'       => $id,
126                'name'     => $name,
127                'options'  => $values,
128                'selected' => $value,
129            ]);
130        }
131
132        $attributes = [
133            'class'     => 'form-control',
134            'type'      => 'text',
135            'id'        => $id,
136            'name'      => $name,
137            'value'     => $value,
138            'maxlength' => static::MAXIMUM_LENGTH,
139            'pattern'   => static::PATTERN,
140        ];
141
142        return '<input ' . Html::attributes($attributes) . ' />';
143    }
144
145    /**
146     * An edit control for this data.
147     *
148     * @param string $id
149     * @param string $name
150     * @param string $value
151     *
152     * @return string
153     */
154    public function editHidden(string $id, string $name, string $value): string
155    {
156        return '<input class="form-control" type="hidden" id="' . e($id) . '" name="' . e($name) . '" value="' . e($value) . '" />';
157    }
158
159    /**
160     * An edit control for this data.
161     *
162     * @param string $id
163     * @param string $name
164     * @param string $value
165     *
166     * @return string
167     */
168    public function editTextArea(string $id, string $name, string $value): string
169    {
170        return '<textarea class="form-control" id="' . e($id) . '" name="' . e($name) . '" rows="5" dir="auto">' . e($value) . '</textarea>';
171    }
172
173    /**
174     * Escape @ signs in a GEDCOM export.
175     *
176     * @param string $value
177     *
178     * @return string
179     */
180    public function escape(string $value): string
181    {
182        return strtr($value, ['@' => '@@']);
183    }
184
185    /**
186     * Create a label for this element.
187     *
188     * @return string
189     */
190    public function label(): string
191    {
192        return $this->label;
193    }
194
195    /**
196     * Create a label/value pair for this element.
197     *
198     * @param string $value
199     * @param Tree   $tree
200     *
201     * @return string
202     */
203    public function labelValue(string $value, Tree $tree): string
204    {
205        $label = '<span class="label">' . $this->label() . '</span>';
206        $value = '<span class="value">' . $this->value($value, $tree) . '</span>';
207        $html  = I18N::translate(/* I18N: e.g. "Occupation: farmer" */ '%1$s: %2$s', $label, $value);
208
209        return '<div>' . $html . '</div>';
210    }
211
212    /**
213     * Set, remove or replace a subtag.
214     *
215     * @param string $subtag
216     * @param string $repeat
217     * @param string $after
218     *
219     * @return void
220     */
221    public function subtag(string $subtag, string $repeat = '', string $after = ''): void
222    {
223        if ($repeat === '') {
224            unset($this->subtags[$subtag]);
225        } elseif ($after === '' || ($this->subtags[$subtag] ?? null) === null) {
226            $this->subtags[$subtag] = $repeat;
227        } else {
228            $tmp = [];
229
230            foreach ($this->subtags as $key => $value) {
231                $tmp[$key] = $value;
232
233                if ($key === $after) {
234                    $tmp[] = $repeat;
235                }
236            }
237
238            $this->subtags = $tmp;
239        }
240
241
242    }
243
244    /**
245     * @return array<string,string>
246     */
247    public function subtags(): array
248    {
249        return $this->subtags;
250    }
251
252    /**
253     * Display the value of this type of element.
254     *
255     * @param string $value
256     * @param Tree   $tree
257     *
258     * @return string
259     */
260    public function value(string $value, Tree $tree): string
261    {
262        $values = $this->values();
263
264        if ($values === []) {
265            if (str_contains($value, "\n")) {
266                return '<span dir="auto" class="d-inline-block" style="white-space: pre-wrap;">' . e($value) . '</span>';
267            }
268
269            return '<span dir="auto">' . e($value) . '</span>';
270        }
271
272        $canonical = $this->canonical($value);
273
274        return $values[$canonical] ?? '<span dir="auto">' . e($value) . '</span>';
275    }
276
277    /**
278     * A list of controlled values for this element
279     *
280     * @return array<int|string,string>
281     */
282    public function values(): array
283    {
284        return [];
285    }
286
287    /**
288     * Display the value of this type of element - convert URLs to links
289     *
290     * @param string $value
291     *
292     * @return string
293     */
294    protected function valueAutoLink(string $value): string
295    {
296        $canonical = $this->canonical($value);
297
298        if (preg_match(static::REGEX_URL, $canonical)) {
299            return '<a href="' . e($canonical) . '" rel="no-follow">' . e($canonical) . '</a>';
300        }
301
302        return e($canonical);
303    }
304
305    /**
306     * Display the value of this type of element.
307     *
308     * @param string $value
309     *
310     * @return string
311     */
312    public function valueNumeric(string $value): string
313    {
314        $canonical = $this->canonical($value);
315
316        if (is_numeric($canonical)) {
317            return I18N::number((int) $canonical);
318        }
319
320        return e($value);
321    }
322}
323