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1 | <?php |
2 | |
3 | namespace MediaWiki\ParamValidator\TypeDef; |
4 | |
5 | use MediaWiki\Linker\LinkTarget; |
6 | use MediaWiki\Title\TitleFactory; |
7 | use Wikimedia\Message\MessageValue; |
8 | use Wikimedia\ParamValidator\Callbacks; |
9 | use Wikimedia\ParamValidator\ParamValidator; |
10 | use Wikimedia\ParamValidator\TypeDef; |
11 | |
12 | /** |
13 | * Type definition for page titles. |
14 | * |
15 | * Failure codes: |
16 | * - 'badtitle': invalid title (e.g. containing disallowed characters). No data. |
17 | * - 'missingtitle': the page with this title does not exist (when PARAM_MUST_EXIST |
18 | * was specified). No data. |
19 | * |
20 | * @since 1.36 |
21 | */ |
22 | class TitleDef extends TypeDef { |
23 | |
24 | /** |
25 | * (bool) Whether the page with the given title needs to exist. |
26 | * |
27 | * Defaults to false. |
28 | */ |
29 | public const PARAM_MUST_EXIST = 'param-must-exist'; |
30 | |
31 | /** |
32 | * (bool) Whether to return a LinkTarget. |
33 | * |
34 | * If false, the validated title is returned as a string (in getPrefixedText() format). |
35 | * Default is false. |
36 | * |
37 | * Avoid setting true with PARAM_ISMULTI, as it may result in excessive DB |
38 | * lookups. If you do combine them, consider setting low values for |
39 | * PARAM_ISMULTI_LIMIT1 and PARAM_ISMULTI_LIMIT2 to mitigate it. |
40 | */ |
41 | public const PARAM_RETURN_OBJECT = 'param-return-object'; |
42 | |
43 | /** @var TitleFactory */ |
44 | private $titleFactory; |
45 | |
46 | /** |
47 | * @param Callbacks $callbacks |
48 | * @param TitleFactory $titleFactory |
49 | */ |
50 | public function __construct( Callbacks $callbacks, TitleFactory $titleFactory ) { |
51 | parent::__construct( $callbacks ); |
52 | $this->titleFactory = $titleFactory; |
53 | } |
54 | |
55 | /** |
56 | * @inheritDoc |
57 | * @return string|LinkTarget Depending on the PARAM_RETURN_OBJECT setting. |
58 | */ |
59 | public function validate( $name, $value, array $settings, array $options ) { |
60 | $mustExist = !empty( $settings[self::PARAM_MUST_EXIST] ); |
61 | $returnObject = !empty( $settings[self::PARAM_RETURN_OBJECT] ); |
62 | |
63 | $title = $this->titleFactory->newFromText( $value ); |
64 | |
65 | if ( !$title ) { |
66 | // Message used: paramvalidator-badtitle |
67 | $this->failure( 'badtitle', $name, $value, $settings, $options ); |
68 | } elseif ( $mustExist && !$title->exists() ) { |
69 | // Message used: paramvalidator-missingtitle |
70 | $this->failure( 'missingtitle', $name, $value, $settings, $options ); |
71 | } |
72 | |
73 | if ( $returnObject ) { |
74 | return $title->getTitleValue(); |
75 | } else { |
76 | return $title->getPrefixedText(); |
77 | } |
78 | } |
79 | |
80 | /** @inheritDoc */ |
81 | public function stringifyValue( $name, $value, array $settings, array $options ) { |
82 | if ( $value instanceof LinkTarget ) { |
83 | return $this->titleFactory->newFromLinkTarget( $value )->getPrefixedText(); |
84 | } |
85 | return parent::stringifyValue( $name, $value, $settings, $options ); |
86 | } |
87 | |
88 | /** @inheritDoc */ |
89 | public function checkSettings( string $name, $settings, array $options, array $ret ): array { |
90 | $ret = parent::checkSettings( $name, $settings, $options, $ret ); |
91 | |
92 | $ret['allowedKeys'] = array_merge( $ret['allowedKeys'], [ |
93 | self::PARAM_MUST_EXIST, self::PARAM_RETURN_OBJECT, |
94 | ] ); |
95 | |
96 | if ( !is_bool( $settings[self::PARAM_MUST_EXIST] ?? false ) ) { |
97 | $ret['issues'][self::PARAM_MUST_EXIST] = 'PARAM_MUST_EXIST must be boolean, got ' |
98 | . gettype( $settings[self::PARAM_MUST_EXIST] ); |
99 | } |
100 | |
101 | if ( !is_bool( $settings[self::PARAM_RETURN_OBJECT] ?? false ) ) { |
102 | $ret['issues'][self::PARAM_RETURN_OBJECT] = 'PARAM_RETURN_OBJECT must be boolean, got ' |
103 | . gettype( $settings[self::PARAM_RETURN_OBJECT] ); |
104 | } |
105 | |
106 | if ( !empty( $settings[ParamValidator::PARAM_ISMULTI] ) && |
107 | !empty( $settings[self::PARAM_RETURN_OBJECT] ) && |
108 | ( |
109 | ( $settings[ParamValidator::PARAM_ISMULTI_LIMIT1] ?? 100 ) > 10 || |
110 | ( $settings[ParamValidator::PARAM_ISMULTI_LIMIT2] ?? 100 ) > 10 |
111 | ) |
112 | ) { |
113 | $ret['issues'][] = 'Multi-valued title-type parameters with PARAM_RETURN_OBJECT ' |
114 | . 'should set low values (<= 10) for PARAM_ISMULTI_LIMIT1 and PARAM_ISMULTI_LIMIT2.' |
115 | . ' (Note that "<= 10" is arbitrary. If something hits this, we can investigate a real limit ' |
116 | . 'once we have a real use case to look at.)'; |
117 | } |
118 | |
119 | return $ret; |
120 | } |
121 | |
122 | /** @inheritDoc */ |
123 | public function getParamInfo( $name, array $settings, array $options ) { |
124 | $info = parent::getParamInfo( $name, $settings, $options ); |
125 | |
126 | $info['mustExist'] = !empty( $settings[self::PARAM_MUST_EXIST] ); |
127 | |
128 | return $info; |
129 | } |
130 | |
131 | /** @inheritDoc */ |
132 | public function getHelpInfo( $name, array $settings, array $options ) { |
133 | $info = parent::getParamInfo( $name, $settings, $options ); |
134 | |
135 | $info[ParamValidator::PARAM_TYPE] = MessageValue::new( 'paramvalidator-help-type-title' ); |
136 | |
137 | $mustExist = !empty( $settings[self::PARAM_MUST_EXIST] ); |
138 | $info[self::PARAM_MUST_EXIST] = $mustExist |
139 | ? MessageValue::new( 'paramvalidator-help-type-title-must-exist' ) |
140 | : MessageValue::new( 'paramvalidator-help-type-title-no-must-exist' ); |
141 | |
142 | return $info; |
143 | } |
144 | |
145 | } |