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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 | use MediaWiki\Content\Renderer\ContentParseParams; |
27 | use MediaWiki\Context\IContextSource; |
28 | use MediaWiki\Html\Html; |
29 | use MediaWiki\Parser\ParserOutput; |
30 | |
31 | /** |
32 | * Content handler implementation for unknown content. |
33 | * |
34 | * This can be used to handle content for which no ContentHandler exists on the system, |
35 | * perhaps because the extension that provided it has been removed. |
36 | * |
37 | * @ingroup Content |
38 | */ |
39 | class FallbackContentHandler extends ContentHandler { |
40 | |
41 | /** |
42 | * Constructs an FallbackContentHandler. Since FallbackContentHandler can be registered |
43 | * for multiple model IDs on a system, multiple instances of FallbackContentHandler may |
44 | * coexist. |
45 | * |
46 | * To preserve the serialization format of the original content model, it must be supplied |
47 | * to the constructor via the $formats parameter. If not given, the default format is |
48 | * reported as 'application/octet-stream'. |
49 | * |
50 | * @param string $modelId |
51 | * @param string[]|null $formats |
52 | */ |
53 | public function __construct( $modelId, $formats = null ) { |
54 | parent::__construct( |
55 | $modelId, |
56 | $formats ?? [ |
57 | 'application/octet-stream', |
58 | 'application/unknown', |
59 | 'application/x-binary', |
60 | 'text/unknown', |
61 | 'unknown/unknown', |
62 | ] |
63 | ); |
64 | } |
65 | |
66 | /** |
67 | * Returns the content's data as-is. |
68 | * |
69 | * @param Content $content |
70 | * @param string|null $format The serialization format to check |
71 | * |
72 | * @return mixed |
73 | */ |
74 | public function serializeContent( Content $content, $format = null ) { |
75 | /** @var FallbackContent $content */ |
76 | '@phan-var FallbackContent $content'; |
77 | return $content->getData(); |
78 | } |
79 | |
80 | /** |
81 | * Constructs an FallbackContent instance wrapping the given data. |
82 | * |
83 | * @since 1.21 |
84 | * |
85 | * @param string $blob serialized content in an unknown format |
86 | * @param string|null $format ignored |
87 | * |
88 | * @return Content The FallbackContent object wrapping $data |
89 | */ |
90 | public function unserializeContent( $blob, $format = null ) { |
91 | return new FallbackContent( $blob, $this->getModelID() ); |
92 | } |
93 | |
94 | /** |
95 | * Creates an empty FallbackContent object. |
96 | * |
97 | * @since 1.21 |
98 | * |
99 | * @return Content A new FallbackContent object with empty text. |
100 | */ |
101 | public function makeEmptyContent() { |
102 | return $this->unserializeContent( '' ); |
103 | } |
104 | |
105 | /** |
106 | * @return false |
107 | */ |
108 | public function supportsDirectEditing() { |
109 | return false; |
110 | } |
111 | |
112 | /** |
113 | * Fills the ParserOutput with an error message. |
114 | * @since 1.38 |
115 | * @param Content $content |
116 | * @param ContentParseParams $cpoParams |
117 | * @param ParserOutput &$output The output object to fill (reference). |
118 | * |
119 | */ |
120 | protected function fillParserOutput( |
121 | Content $content, |
122 | ContentParseParams $cpoParams, |
123 | ParserOutput &$output |
124 | ) { |
125 | '@phan-var FallbackContent $content'; |
126 | $msg = wfMessage( 'unsupported-content-model', [ $content->getModel() ] ); |
127 | $html = Html::rawElement( 'div', [ 'class' => 'error' ], $msg->inContentLanguage()->parse() ); |
128 | $output->setRawText( $html ); |
129 | } |
130 | |
131 | /** |
132 | * @param IContextSource $context |
133 | * |
134 | * @return SlotDiffRenderer |
135 | */ |
136 | protected function getSlotDiffRendererInternal( IContextSource $context ) { |
137 | return new UnsupportedSlotDiffRenderer( $context ); |
138 | } |
139 | } |