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1 | <?php |
2 | /** |
3 | * Base content handler class for flat text contents. |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
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 | * |
15 | * You should have received a copy of the GNU General Public License along |
16 | * with this program; if not, write to the Free Software Foundation, Inc., |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
18 | * http://www.gnu.org/copyleft/gpl.html |
19 | * |
20 | * @since 1.36 (As UnknownContentHandler in 1.34) |
21 | * |
22 | * @file |
23 | * @ingroup Content |
24 | */ |
25 | |
26 | namespace MediaWiki\Content; |
27 | |
28 | use MediaWiki\Content\Renderer\ContentParseParams; |
29 | use MediaWiki\Context\IContextSource; |
30 | use MediaWiki\Html\Html; |
31 | use MediaWiki\Parser\ParserOutput; |
32 | use SlotDiffRenderer; |
33 | use UnsupportedSlotDiffRenderer; |
34 | |
35 | /** |
36 | * Content handler implementation for unknown content. |
37 | * |
38 | * This can be used to handle content for which no ContentHandler exists on the system, |
39 | * perhaps because the extension that provided it has been removed. |
40 | * |
41 | * @ingroup Content |
42 | */ |
43 | class FallbackContentHandler extends ContentHandler { |
44 | |
45 | /** |
46 | * Constructs an FallbackContentHandler. Since FallbackContentHandler can be registered |
47 | * for multiple model IDs on a system, multiple instances of FallbackContentHandler may |
48 | * coexist. |
49 | * |
50 | * To preserve the serialization format of the original content model, it must be supplied |
51 | * to the constructor via the $formats parameter. If not given, the default format is |
52 | * reported as 'application/octet-stream'. |
53 | * |
54 | * @param string $modelId |
55 | * @param string[]|null $formats |
56 | */ |
57 | public function __construct( $modelId, $formats = null ) { |
58 | parent::__construct( |
59 | $modelId, |
60 | $formats ?? [ |
61 | 'application/octet-stream', |
62 | 'application/unknown', |
63 | 'application/x-binary', |
64 | 'text/unknown', |
65 | 'unknown/unknown', |
66 | ] |
67 | ); |
68 | } |
69 | |
70 | /** |
71 | * Returns the content's data as-is. |
72 | * |
73 | * @param Content $content |
74 | * @param string|null $format The serialization format to check |
75 | * |
76 | * @return mixed |
77 | */ |
78 | public function serializeContent( Content $content, $format = null ) { |
79 | /** @var FallbackContent $content */ |
80 | '@phan-var FallbackContent $content'; |
81 | return $content->getData(); |
82 | } |
83 | |
84 | /** |
85 | * Constructs an FallbackContent instance wrapping the given data. |
86 | * |
87 | * @since 1.21 |
88 | * |
89 | * @param string $blob serialized content in an unknown format |
90 | * @param string|null $format ignored |
91 | * |
92 | * @return Content The FallbackContent object wrapping $data |
93 | */ |
94 | public function unserializeContent( $blob, $format = null ) { |
95 | return new FallbackContent( $blob, $this->getModelID() ); |
96 | } |
97 | |
98 | /** |
99 | * Creates an empty FallbackContent object. |
100 | * |
101 | * @since 1.21 |
102 | * |
103 | * @return Content A new FallbackContent object with empty text. |
104 | */ |
105 | public function makeEmptyContent() { |
106 | return $this->unserializeContent( '' ); |
107 | } |
108 | |
109 | /** |
110 | * @return false |
111 | */ |
112 | public function supportsDirectEditing() { |
113 | return false; |
114 | } |
115 | |
116 | /** |
117 | * Fills the ParserOutput with an error message. |
118 | * @since 1.38 |
119 | * @param Content $content |
120 | * @param ContentParseParams $cpoParams |
121 | * @param ParserOutput &$output The output object to fill (reference). |
122 | * |
123 | */ |
124 | protected function fillParserOutput( |
125 | Content $content, |
126 | ContentParseParams $cpoParams, |
127 | ParserOutput &$output |
128 | ) { |
129 | '@phan-var FallbackContent $content'; |
130 | $msg = wfMessage( 'unsupported-content-model', [ $content->getModel() ] ); |
131 | $html = Html::rawElement( 'div', [ 'class' => 'error' ], $msg->inContentLanguage()->parse() ); |
132 | $output->setRawText( $html ); |
133 | } |
134 | |
135 | /** |
136 | * @param IContextSource $context |
137 | * |
138 | * @return SlotDiffRenderer |
139 | */ |
140 | protected function getSlotDiffRendererInternal( IContextSource $context ) { |
141 | return new UnsupportedSlotDiffRenderer( $context ); |
142 | } |
143 | } |
144 | /** @deprecated class alias since 1.43 */ |
145 | class_alias( FallbackContentHandler::class, 'FallbackContentHandler' ); |