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1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | */ |
20 | |
21 | namespace MediaWiki\Minerva\Menu; |
22 | |
23 | use DomainException; |
24 | use MediaWiki\Minerva\Menu\Entries\IMenuEntry; |
25 | |
26 | /** |
27 | * Model for a menu that can be presented in a skin. |
28 | */ |
29 | final class Group { |
30 | /** |
31 | * @var IMenuEntry[] |
32 | */ |
33 | private $entries = []; |
34 | |
35 | /** |
36 | * @var string |
37 | */ |
38 | private $id; |
39 | |
40 | /** |
41 | * @param string $id of the menu defaults to null (optional) |
42 | */ |
43 | public function __construct( $id ) { |
44 | $this->id = $id; |
45 | } |
46 | |
47 | /** |
48 | * Get the identifier for the group |
49 | * |
50 | * @return string |
51 | */ |
52 | public function getId() { |
53 | return $this->id; |
54 | } |
55 | |
56 | /** |
57 | * Return entries count |
58 | * |
59 | * @return bool |
60 | */ |
61 | public function hasEntries(): bool { |
62 | return count( $this->entries ) > 0; |
63 | } |
64 | |
65 | /** |
66 | * Get all entries represented as plain old PHP arrays. |
67 | * |
68 | * @return array |
69 | */ |
70 | public function getEntries(): array { |
71 | $entryPresenter = static function ( IMenuEntry $entry ) { |
72 | $result = [ |
73 | 'name' => $entry->getName(), |
74 | 'components' => $entry->getComponents(), |
75 | ]; |
76 | $classes = $entry->getCSSClasses(); |
77 | if ( $classes ) { |
78 | $result[ 'class' ] = implode( ' ', $classes ); |
79 | } |
80 | |
81 | return $result; |
82 | }; |
83 | |
84 | return array_map( $entryPresenter, $this->entries ); |
85 | } |
86 | |
87 | /** |
88 | * Helper method to verify that the $name of entry is unique (do not exists |
89 | * in current Group ) |
90 | * @param string $name |
91 | * @throws DomainException When the entry already exists |
92 | */ |
93 | private function throwIfNotUnique( string $name ): void { |
94 | try { |
95 | $this->search( $name ); |
96 | } catch ( DomainException $exception ) { |
97 | return; |
98 | } |
99 | throw new DomainException( "The \"{$name}\" entry already exists." ); |
100 | } |
101 | |
102 | /** |
103 | * Prepend new menu entry |
104 | * @param IMenuEntry $entry |
105 | * @throws DomainException When the entry already exists |
106 | */ |
107 | public function prependEntry( IMenuEntry $entry ): void { |
108 | $this->throwIfNotUnique( $entry->getName() ); |
109 | array_unshift( $this->entries, $entry ); |
110 | } |
111 | |
112 | /** |
113 | * Insert new menu entry |
114 | * @param IMenuEntry $entry |
115 | * @throws DomainException When the entry already exists |
116 | */ |
117 | public function insertEntry( IMenuEntry $entry ) { |
118 | $this->throwIfNotUnique( $entry->getName() ); |
119 | $this->entries[] = $entry; |
120 | } |
121 | |
122 | /** |
123 | * Searches for a menu entry by name. |
124 | * |
125 | * @param string $name |
126 | * @return int If the menu entry exists, then the 0-based index of the entry; otherwise, -1 |
127 | * @throws DomainException |
128 | */ |
129 | private function search( string $name ): int { |
130 | $count = count( $this->entries ); |
131 | |
132 | for ( $i = 0; $i < $count; ++$i ) { |
133 | if ( $this->entries[$i]->getName() === $name ) { |
134 | return $i; |
135 | } |
136 | } |
137 | throw new DomainException( "The \"{$name}\" entry doesn't exist." ); |
138 | } |
139 | |
140 | /** |
141 | * @param string $targetName |
142 | * @return IMenuEntry |
143 | * @throws DomainException |
144 | */ |
145 | public function getEntryByName( string $targetName ): IMenuEntry { |
146 | $index = $this->search( $targetName ); |
147 | return $this->entries[$index]; |
148 | } |
149 | |
150 | /** |
151 | * Serialize the group for use in a template |
152 | * @return array{entries:array,id:string} |
153 | */ |
154 | public function serialize(): array { |
155 | return [ |
156 | 'entries' => $this->getEntries(), |
157 | 'id' => $this->getId(), |
158 | ]; |
159 | } |
160 | } |