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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\Gadgets; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use MediaWiki\Linker\LinkTarget; |
| 7 | use MediaWiki\MediaWikiServices; |
| 8 | use MediaWiki\Message\Message; |
| 9 | use MediaWiki\Title\Title; |
| 10 | |
| 11 | abstract class GadgetRepo { |
| 12 | |
| 13 | /** |
| 14 | * @var GadgetRepo|null |
| 15 | */ |
| 16 | private static $instance; |
| 17 | |
| 18 | /** @internal */ |
| 19 | public const RESOURCE_TITLE_PREFIX = 'MediaWiki:Gadget-'; |
| 20 | |
| 21 | /** |
| 22 | * Get the ids of the gadgets provided by this repository |
| 23 | * |
| 24 | * It's possible this could be out of sync with what |
| 25 | * getGadget() will return due to caching |
| 26 | * |
| 27 | * @return string[] |
| 28 | */ |
| 29 | abstract public function getGadgetIds(): array; |
| 30 | |
| 31 | /** |
| 32 | * Get the Gadget object for a given gadget ID |
| 33 | * |
| 34 | * @param string $id |
| 35 | * @return Gadget |
| 36 | * @throws InvalidArgumentException For unregistered ID, used by getStructuredList() |
| 37 | */ |
| 38 | abstract public function getGadget( string $id ): Gadget; |
| 39 | |
| 40 | /** |
| 41 | * Invalidate any caches based on the provided page (after create, edit, or delete). |
| 42 | * |
| 43 | * This must be called on create and delete as well (T39228). |
| 44 | * |
| 45 | * @param LinkTarget $target |
| 46 | * @return void |
| 47 | */ |
| 48 | public function handlePageUpdate( LinkTarget $target ): void { |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Given a gadget ID, return the title of the page where the gadget is |
| 53 | * defined (or null if the given repo does not have per-gadget definition |
| 54 | * pages). |
| 55 | * |
| 56 | * @param string $id |
| 57 | * @return Title|null |
| 58 | */ |
| 59 | public function getGadgetDefinitionTitle( string $id ): ?Title { |
| 60 | return null; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Get a lists of Gadget objects by category |
| 65 | * |
| 66 | * @return array<string,Gadget[]> `[ 'category' => [ 'name' => $gadget ] ]` |
| 67 | */ |
| 68 | public function getStructuredList() { |
| 69 | $list = []; |
| 70 | foreach ( $this->getGadgetIds() as $id ) { |
| 71 | try { |
| 72 | $gadget = $this->getGadget( $id ); |
| 73 | } catch ( InvalidArgumentException $e ) { |
| 74 | continue; |
| 75 | } |
| 76 | $list[$gadget->getCategory()][$gadget->getName()] = $gadget; |
| 77 | } |
| 78 | |
| 79 | return $list; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Get the page name without "MediaWiki:Gadget-" prefix. |
| 84 | * |
| 85 | * This name is used by `mw.loader.require()` so that `require("./example.json")` resolves |
| 86 | * to `MediaWiki:Gadget-example.json`. |
| 87 | * |
| 88 | * @param string $titleText |
| 89 | * @param string $gadgetId |
| 90 | * @return string |
| 91 | */ |
| 92 | public function titleWithoutPrefix( string $titleText, string $gadgetId ): string { |
| 93 | // there is only one occurrence of the prefix |
| 94 | $numReplaces = 1; |
| 95 | return str_replace( self::RESOURCE_TITLE_PREFIX, '', $titleText, $numReplaces ); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * @param Gadget $gadget |
| 100 | * @return Message[] |
| 101 | */ |
| 102 | public function validationWarnings( Gadget $gadget ): array { |
| 103 | // Basic checks local to the gadget definition |
| 104 | $warningMsgKeys = $gadget->getValidationWarnings(); |
| 105 | $warnings = array_map( static function ( $warningMsgKey ) { |
| 106 | return wfMessage( $warningMsgKey ); |
| 107 | }, $warningMsgKeys ); |
| 108 | |
| 109 | // Check for invalid values in skins, rights, namespaces, and contentModels |
| 110 | $this->checkInvalidLoadConditions( $gadget, 'skins', $warnings ); |
| 111 | $this->checkInvalidLoadConditions( $gadget, 'rights', $warnings ); |
| 112 | $this->checkInvalidLoadConditions( $gadget, 'namespaces', $warnings ); |
| 113 | $this->checkInvalidLoadConditions( $gadget, 'contentModels', $warnings ); |
| 114 | |
| 115 | // Peer gadgets not being styles-only gadgets, or not being defined at all |
| 116 | foreach ( $gadget->getPeers() as $peer ) { |
| 117 | try { |
| 118 | $peerGadget = $this->getGadget( $peer ); |
| 119 | if ( $peerGadget->getType() !== 'styles' ) { |
| 120 | $warnings[] = wfMessage( "gadgets-validate-invalidpeer", $peer ); |
| 121 | } |
| 122 | } catch ( InvalidArgumentException $ex ) { |
| 123 | $warnings[] = wfMessage( "gadgets-validate-nopeer", $peer ); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | // Check that the gadget pages exist and are of the right content model |
| 128 | $warnings = array_merge( |
| 129 | $warnings, |
| 130 | $this->checkTitles( $gadget->getScripts(), CONTENT_MODEL_JAVASCRIPT, |
| 131 | "gadgets-validate-invalidjs" ), |
| 132 | $this->checkTitles( $gadget->getStyles(), CONTENT_MODEL_CSS, |
| 133 | "gadgets-validate-invalidcss" ), |
| 134 | $this->checkTitles( $gadget->getJSONs(), CONTENT_MODEL_JSON, |
| 135 | "gadgets-validate-invalidjson" ) |
| 136 | ); |
| 137 | |
| 138 | return $warnings; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Verify gadget resource pages exist and use the correct content model. |
| 143 | * |
| 144 | * @param string[] $pages Full page names |
| 145 | * @param string $expectedContentModel |
| 146 | * @param string $msg Interface message key |
| 147 | * @return Message[] |
| 148 | */ |
| 149 | private function checkTitles( array $pages, string $expectedContentModel, string $msg ): array { |
| 150 | $warnings = []; |
| 151 | foreach ( $pages as $pageName ) { |
| 152 | $title = Title::newFromText( $pageName ); |
| 153 | if ( !$title ) { |
| 154 | $warnings[] = wfMessage( "gadgets-validate-invalidtitle", $pageName ); |
| 155 | continue; |
| 156 | } |
| 157 | if ( !$title->exists() ) { |
| 158 | $warnings[] = wfMessage( "gadgets-validate-nopage", $pageName ); |
| 159 | continue; |
| 160 | } |
| 161 | $contentModel = $title->getContentModel(); |
| 162 | if ( $contentModel !== $expectedContentModel ) { |
| 163 | $warnings[] = wfMessage( $msg, $pageName, $contentModel ); |
| 164 | } |
| 165 | } |
| 166 | return $warnings; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * @param Gadget $gadget |
| 171 | * @param string $condition |
| 172 | * @param Message[] &$warnings |
| 173 | */ |
| 174 | private function checkInvalidLoadConditions( Gadget $gadget, string $condition, array &$warnings ) { |
| 175 | switch ( $condition ) { |
| 176 | case 'skins': |
| 177 | $allSkins = array_keys( MediaWikiServices::getInstance()->getSkinFactory()->getInstalledSkins() ); |
| 178 | $this->maybeAddWarnings( $gadget->getRequiredSkins(), |
| 179 | static function ( $skin ) use ( $allSkins ) { |
| 180 | return !in_array( $skin, $allSkins, true ); |
| 181 | }, $warnings, "gadgets-validate-invalidskins" ); |
| 182 | break; |
| 183 | |
| 184 | case 'rights': |
| 185 | $allPerms = MediaWikiServices::getInstance()->getPermissionManager()->getAllPermissions(); |
| 186 | $this->maybeAddWarnings( $gadget->getRequiredRights(), |
| 187 | static function ( $right ) use ( $allPerms ) { |
| 188 | return !in_array( $right, $allPerms, true ); |
| 189 | }, $warnings, "gadgets-validate-invalidrights" ); |
| 190 | break; |
| 191 | |
| 192 | case 'namespaces': |
| 193 | $nsInfo = MediaWikiServices::getInstance()->getNamespaceInfo(); |
| 194 | $this->maybeAddWarnings( $gadget->getRequiredNamespaces(), |
| 195 | static function ( $ns ) use ( $nsInfo ) { |
| 196 | return !$nsInfo->exists( $ns ); |
| 197 | }, $warnings, "gadgets-validate-invalidnamespaces" |
| 198 | ); |
| 199 | break; |
| 200 | |
| 201 | case 'contentModels': |
| 202 | $contentHandlerFactory = MediaWikiServices::getInstance()->getContentHandlerFactory(); |
| 203 | $this->maybeAddWarnings( $gadget->getRequiredContentModels(), |
| 204 | static function ( $model ) use ( $contentHandlerFactory ) { |
| 205 | return !$contentHandlerFactory->isDefinedModel( $model ); |
| 206 | }, $warnings, "gadgets-validate-invalidcontentmodels" |
| 207 | ); |
| 208 | break; |
| 209 | default: |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * Iterate over the given $entries, for each check if it is invalid using $isInvalid predicate, |
| 215 | * and if so add the $message to $warnings. |
| 216 | * |
| 217 | * @param array $entries |
| 218 | * @param callable $isInvalid |
| 219 | * @param array &$warnings |
| 220 | * @param string $message |
| 221 | */ |
| 222 | private function maybeAddWarnings( array $entries, callable $isInvalid, array &$warnings, string $message ) { |
| 223 | $invalidEntries = []; |
| 224 | foreach ( $entries as $entry ) { |
| 225 | if ( $isInvalid( $entry ) ) { |
| 226 | $invalidEntries[] = $entry; |
| 227 | } |
| 228 | } |
| 229 | if ( count( $invalidEntries ) ) { |
| 230 | $warnings[] = wfMessage( $message, |
| 231 | Message::listParam( $invalidEntries, 'comma' ), |
| 232 | count( $invalidEntries ) ); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Get the configured default GadgetRepo. |
| 238 | * |
| 239 | * @deprecated Use the GadgetsRepo service instead |
| 240 | * @return GadgetRepo |
| 241 | */ |
| 242 | public static function singleton() { |
| 243 | wfDeprecated( __METHOD__, '1.42' ); |
| 244 | if ( self::$instance === null ) { |
| 245 | return MediaWikiServices::getInstance()->getService( 'GadgetsRepo' ); |
| 246 | } |
| 247 | return self::$instance; |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Should only be used by unit tests |
| 252 | * |
| 253 | * @deprecated Use the GadgetsRepo service instead |
| 254 | * @param GadgetRepo|null $repo |
| 255 | */ |
| 256 | public static function setSingleton( $repo = null ) { |
| 257 | wfDeprecated( __METHOD__, '1.42' ); |
| 258 | self::$instance = $repo; |
| 259 | } |
| 260 | } |