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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 | namespace MediaWiki\ResourceLoader; |
| 21 | |
| 22 | use InvalidArgumentException; |
| 23 | use MediaWiki\Config\Config; |
| 24 | use MediaWiki\MainConfigNames; |
| 25 | use MediaWiki\Output\OutputPage; |
| 26 | use Wikimedia\Minify\CSSMin; |
| 27 | |
| 28 | /** |
| 29 | * Module for skin stylesheets. |
| 30 | * |
| 31 | * @ingroup ResourceLoader |
| 32 | * @internal |
| 33 | */ |
| 34 | class SkinModule extends LessVarFileModule { |
| 35 | |
| 36 | /** |
| 37 | * Every skin should define which features it would like to reuse for core inside a |
| 38 | * ResourceLoader module that has set the class to SkinModule. |
| 39 | * For a feature to be valid it must be listed here along with the associated resources |
| 40 | * |
| 41 | * The following features are available: |
| 42 | * |
| 43 | * "accessibility": |
| 44 | * Adds universal accessibility rules. |
| 45 | * |
| 46 | * "logo": |
| 47 | * Adds CSS to style an element with class `mw-wiki-logo` using the value of wgLogos['1x']. |
| 48 | * This is enabled by default if no features are added. |
| 49 | * |
| 50 | * "normalize": |
| 51 | * Styles needed to normalize rendering across different browser rendering engines. |
| 52 | * All to address bugs and common browser inconsistencies for skins and extensions. |
| 53 | * Inspired by necolas' normalize.css. This is meant to be kept lean, |
| 54 | * basic styling beyond normalization should live in one of the following modules. |
| 55 | * |
| 56 | * "elements": |
| 57 | * The base level that only contains the most basic of common skin styles. |
| 58 | * Only styles for single elements are included, no styling for complex structures like the |
| 59 | * TOC is present. This level is for skins that want to implement the entire style of even |
| 60 | * content area structures like the TOC themselves. |
| 61 | * |
| 62 | * "content": |
| 63 | * Deprecated. Alias for "content-media". |
| 64 | * |
| 65 | * "content-thumbnails": |
| 66 | * Deprecated. Alias for "content-media". |
| 67 | * |
| 68 | * "content-media": |
| 69 | * Styles for thumbnails and floated elements. |
| 70 | * Will add styles for the new media structure on wikis where $wgParserEnableLegacyMediaDOM is disabled, |
| 71 | * or $wgUseContentMediaStyles is enabled. |
| 72 | * See https://www.mediawiki.org/wiki/Parsing/Media_structure |
| 73 | * |
| 74 | * "content-links": |
| 75 | * The skin will apply optional styling rules for links that should be styled differently |
| 76 | * to the rules in `elements` and `normalize`. It provides support for .mw-selflink, |
| 77 | * a.new (red links), a.stub (stub links) and some basic styles for external links. |
| 78 | * It also provides rules supporting the underline user preference. |
| 79 | * |
| 80 | * "content-links-external": |
| 81 | * The skin will apply optional styling rules to links to provide icons for different file types. |
| 82 | * |
| 83 | * "content-body": |
| 84 | * Styles for the mw-parser-output class. |
| 85 | * |
| 86 | * "content-tables": |
| 87 | * Styles .wikitable style tables. |
| 88 | * |
| 89 | * "interface": |
| 90 | * Shorthand for a set of styles that are common |
| 91 | * to skins like MonoBook, Vector, etc... Essentially this level is for styles that are |
| 92 | * common to MonoBook clones. |
| 93 | * This enables interface-core, interface-indicators, interface-subtitle, |
| 94 | * interface-user-message, interface-site-notice and interface-edit-section-links. |
| 95 | * |
| 96 | * "interface-category": |
| 97 | * Styles used for styling the categories in a horizontal bar at the bottom of the content. |
| 98 | * |
| 99 | * "interface-core": |
| 100 | * Required interface core styles. Disabling these is not recommended. |
| 101 | * |
| 102 | * "interface-edit-section-links": |
| 103 | * Default interface styling for edit section links. |
| 104 | * |
| 105 | * "interface-indicators": |
| 106 | * Default interface styling for indicators. |
| 107 | * |
| 108 | * "interface-message-box": |
| 109 | * Styles for message boxes. Can be used by skins that do not load Codex styles on page load. |
| 110 | * |
| 111 | * "interface-site-notice": |
| 112 | * Default interface styling for site notices. |
| 113 | * |
| 114 | * "interface-subtitle": |
| 115 | * Default interface styling for subtitle area. |
| 116 | * |
| 117 | * "interface-user-message": |
| 118 | * Default interface styling for html-user-message (you have new talk page messages box) |
| 119 | * |
| 120 | * "i18n-ordered-lists": |
| 121 | * Styles for ordered lists elements that support mixed language content. |
| 122 | * |
| 123 | * "i18n-all-lists-margins": |
| 124 | * Styles for margins of list elements where LTR and RTL are mixed. |
| 125 | * |
| 126 | * "i18n-headings": |
| 127 | * Styles for line-heights of headings across different languages. |
| 128 | * |
| 129 | * "toc" |
| 130 | * Styling rules for the table of contents. |
| 131 | * |
| 132 | * NOTE: The order of the keys defines the order in which the styles are output. |
| 133 | */ |
| 134 | private const FEATURE_FILES = [ |
| 135 | 'accessibility' => [ |
| 136 | 'all' => [ 'resources/src/mediawiki.skinning/accessibility.less' ], |
| 137 | ], |
| 138 | 'normalize' => [ |
| 139 | 'all' => [ 'resources/src/mediawiki.skinning/normalize.less' ], |
| 140 | ], |
| 141 | 'logo' => [ |
| 142 | // Applies the logo and ensures it downloads prior to printing. |
| 143 | 'all' => [ 'resources/src/mediawiki.skinning/logo.less' ], |
| 144 | // Reserves whitespace for the logo in a pseudo element. |
| 145 | 'print' => [ 'resources/src/mediawiki.skinning/logo-print.less' ], |
| 146 | ], |
| 147 | 'content-media' => [], |
| 148 | 'content-links' => [ |
| 149 | 'screen' => [ 'resources/src/mediawiki.skinning/content.links.less' ] |
| 150 | ], |
| 151 | 'content-links-external' => [ |
| 152 | 'screen' => [ 'resources/src/mediawiki.skinning/content.externallinks.less' ] |
| 153 | ], |
| 154 | 'content-body' => [ |
| 155 | 'screen' => [ 'resources/src/mediawiki.skinning/content.body.less' ], |
| 156 | 'print' => [ 'resources/src/mediawiki.skinning/content.body-print.less' ], |
| 157 | ], |
| 158 | 'content-tables' => [ |
| 159 | 'screen' => [ 'resources/src/mediawiki.skinning/content.tables.less' ], |
| 160 | 'print' => [ 'resources/src/mediawiki.skinning/content.tables-print.less' ] |
| 161 | ], |
| 162 | // Legacy shorthand for 6 features: interface-core, interface-edit-section-links, |
| 163 | // interface-indicators, interface-subtitle, interface-site-notice, interface-user-message |
| 164 | 'interface' => [], |
| 165 | 'interface-category' => [ |
| 166 | 'screen' => [ 'resources/src/mediawiki.skinning/interface.category.less' ], |
| 167 | 'print' => [ 'resources/src/mediawiki.skinning/interface.category-print.less' ], |
| 168 | ], |
| 169 | 'interface-core' => [ |
| 170 | 'screen' => [ 'resources/src/mediawiki.skinning/interface.less' ], |
| 171 | 'print' => [ 'resources/src/mediawiki.skinning/interface-print.less' ], |
| 172 | ], |
| 173 | 'interface-edit-section-links' => [ |
| 174 | 'screen' => [ 'resources/src/mediawiki.skinning/interface-edit-section-links.less' ], |
| 175 | ], |
| 176 | 'interface-indicators' => [ |
| 177 | 'screen' => [ 'resources/src/mediawiki.skinning/interface-indicators.less' ], |
| 178 | ], |
| 179 | 'interface-site-notice' => [ |
| 180 | 'screen' => [ 'resources/src/mediawiki.skinning/interface-site-notice.less' ], |
| 181 | ], |
| 182 | 'interface-subtitle' => [ |
| 183 | 'screen' => [ 'resources/src/mediawiki.skinning/interface-subtitle.less' ], |
| 184 | ], |
| 185 | 'interface-message-box' => [ |
| 186 | 'all' => [ 'resources/src/mediawiki.skinning/messageBoxes.less' ], |
| 187 | ], |
| 188 | 'interface-user-message' => [ |
| 189 | 'screen' => [ 'resources/src/mediawiki.skinning/interface-user-message.less' ], |
| 190 | ], |
| 191 | 'elements' => [ |
| 192 | 'screen' => [ 'resources/src/mediawiki.skinning/elements.less' ], |
| 193 | 'print' => [ 'resources/src/mediawiki.skinning/elements-print.less' ], |
| 194 | ], |
| 195 | // The styles of the legacy feature was removed in 1.39. This can be removed when no skins are referencing it |
| 196 | // (Dropping this line will trigger InvalidArgumentException: Feature 'legacy' is not recognised) |
| 197 | 'legacy' => [], |
| 198 | 'i18n-ordered-lists' => [ |
| 199 | 'screen' => [ 'resources/src/mediawiki.skinning/i18n-ordered-lists.less' ], |
| 200 | ], |
| 201 | 'i18n-all-lists-margins' => [ |
| 202 | 'screen' => [ 'resources/src/mediawiki.skinning/i18n-all-lists-margins.less' ], |
| 203 | ], |
| 204 | 'i18n-headings' => [ |
| 205 | 'screen' => [ 'resources/src/mediawiki.skinning/i18n-headings.less' ], |
| 206 | ], |
| 207 | 'toc' => [ |
| 208 | 'all' => [ 'resources/src/mediawiki.skinning/toc/common.css' ], |
| 209 | 'screen' => [ 'resources/src/mediawiki.skinning/toc/screen.less' ], |
| 210 | 'print' => [ 'resources/src/mediawiki.skinning/toc/print.css' ], |
| 211 | ], |
| 212 | ]; |
| 213 | |
| 214 | /** @var string[] */ |
| 215 | private $features; |
| 216 | |
| 217 | /** |
| 218 | * Defaults for when a 'features' parameter is specified. |
| 219 | * |
| 220 | * When these apply, they are the merged into the specified options. |
| 221 | * |
| 222 | * @var array<string,bool> |
| 223 | */ |
| 224 | private const DEFAULT_FEATURES_SPECIFIED = [ |
| 225 | 'accessibility' => true, |
| 226 | 'content-body' => true, |
| 227 | 'interface-core' => true, |
| 228 | 'toc' => true |
| 229 | ]; |
| 230 | |
| 231 | /** |
| 232 | * Default for when the 'features' parameter is absent. |
| 233 | * |
| 234 | * For backward-compatibility, when the parameter is not declared |
| 235 | * only 'logo' styles are loaded. |
| 236 | * |
| 237 | * @var string[] |
| 238 | */ |
| 239 | private const DEFAULT_FEATURES_ABSENT = [ |
| 240 | 'logo', |
| 241 | ]; |
| 242 | |
| 243 | private const LESS_MESSAGES = [ |
| 244 | // `toc` feature, used in screen.less |
| 245 | 'hidetoc', |
| 246 | 'showtoc', |
| 247 | ]; |
| 248 | |
| 249 | /** |
| 250 | * @param array $options |
| 251 | * - features: Map from feature keys to boolean indicating whether to load |
| 252 | * or not include the associated styles. |
| 253 | * Keys not specified get their default from self::DEFAULT_FEATURES_SPECIFIED. |
| 254 | * |
| 255 | * If this is set to a list of strings, then the defaults do not apply. |
| 256 | * Use this at your own risk as it means you opt-out from backwards compatibility |
| 257 | * provided through these defaults. For example, when features are migrated |
| 258 | * to the SkinModule system from other parts of MediaWiki, those new feature keys |
| 259 | * may be enabled by default, and opting out means you may be missing some styles |
| 260 | * after an upgrade until you enable them or implement them by other means. |
| 261 | * |
| 262 | * - lessMessages: Interface message keys to export as LESS variables. |
| 263 | * See also LessVarFileModule. |
| 264 | * |
| 265 | * @param string|null $localBasePath |
| 266 | * @param string|null $remoteBasePath |
| 267 | * @see Additonal options at $wgResourceModules |
| 268 | */ |
| 269 | public function __construct( |
| 270 | array $options = [], |
| 271 | $localBasePath = null, |
| 272 | $remoteBasePath = null |
| 273 | ) { |
| 274 | $features = $options['features'] ?? self::DEFAULT_FEATURES_ABSENT; |
| 275 | $listMode = array_keys( $features ) === range( 0, count( $features ) - 1 ); |
| 276 | |
| 277 | $messages = ''; |
| 278 | // NOTE: Compatibility is only applied when features are provided |
| 279 | // in map-form. The list-form does not currently get these. |
| 280 | $features = $listMode ? self::applyFeaturesCompatibility( |
| 281 | array_fill_keys( $features, true ), false, $messages |
| 282 | ) : self::applyFeaturesCompatibility( $features, true, $messages ); |
| 283 | |
| 284 | foreach ( $features as $key => $enabled ) { |
| 285 | if ( !isset( self::FEATURE_FILES[$key] ) ) { |
| 286 | throw new InvalidArgumentException( "Feature '$key' is not recognised" ); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | $this->features = $listMode |
| 291 | ? array_keys( array_filter( $features ) ) |
| 292 | : array_keys( array_filter( $features + self::DEFAULT_FEATURES_SPECIFIED ) ); |
| 293 | |
| 294 | // Only the `toc` feature makes use of interface messages. |
| 295 | // For skins not using the `toc` feature, make sure LocalisationCache |
| 296 | // remains untouched (T270027). |
| 297 | if ( in_array( 'toc', $this->features ) ) { |
| 298 | $options['lessMessages'] = array_merge( |
| 299 | $options['lessMessages'] ?? [], |
| 300 | self::LESS_MESSAGES |
| 301 | ); |
| 302 | } |
| 303 | |
| 304 | if ( $messages !== '' ) { |
| 305 | $messages .= 'More information can be found at [[mw:Manual:ResourceLoaderSkinModule]]. '; |
| 306 | $options['deprecated'] = $messages; |
| 307 | } |
| 308 | parent::__construct( $options, $localBasePath, $remoteBasePath ); |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * @internal |
| 313 | * @param array $features |
| 314 | * @param bool $addUnspecifiedFeatures whether to add new features if missing |
| 315 | * @param string &$messages to report deprecations |
| 316 | * @return array |
| 317 | */ |
| 318 | protected static function applyFeaturesCompatibility( |
| 319 | array $features, bool $addUnspecifiedFeatures = true, &$messages = '' |
| 320 | ): array { |
| 321 | // The `content` feature is mapped to `content-media`. |
| 322 | if ( isset( $features[ 'content' ] ) ) { |
| 323 | $features[ 'content-media' ] = $features[ 'content' ]; |
| 324 | unset( $features[ 'content' ] ); |
| 325 | $messages .= '[1.37] The use of the `content` feature with SkinModule' |
| 326 | . ' is deprecated. Use `content-media` instead. '; |
| 327 | } |
| 328 | |
| 329 | // The `content-thumbnails` feature is mapped to `content-media`. |
| 330 | if ( isset( $features[ 'content-thumbnails' ] ) ) { |
| 331 | $features[ 'content-media' ] = $features[ 'content-thumbnails' ]; |
| 332 | $messages .= '[1.37] The use of the `content-thumbnails` feature with SkinModule' |
| 333 | . ' is deprecated. Use `content-media` instead. '; |
| 334 | unset( $features[ 'content-thumbnails' ] ); |
| 335 | } |
| 336 | |
| 337 | // If `content-links` feature is set but no preference for `content-links-external` is set |
| 338 | if ( $addUnspecifiedFeatures && isset( $features[ 'content-links' ] ) |
| 339 | && !isset( $features[ 'content-links-external' ] ) |
| 340 | ) { |
| 341 | // Assume the same true/false preference for both. |
| 342 | $features[ 'content-links-external' ] = $features[ 'content-links' ]; |
| 343 | } |
| 344 | |
| 345 | // The legacy feature no longer exists (T89981) but to avoid fatals in skins is retained. |
| 346 | if ( isset( $features['legacy'] ) && $features['legacy'] ) { |
| 347 | $messages .= '[1.37] The use of the `legacy` feature with SkinModule is deprecated' |
| 348 | . '(T89981) and is a NOOP since 1.39 (T304325). This should be urgently omited to retain compatibility ' |
| 349 | . 'with future MediaWiki versions'; |
| 350 | } |
| 351 | |
| 352 | // The `content-links` feature was split out from `elements`. |
| 353 | // Make sure skins asking for `elements` also get these by default. |
| 354 | if ( $addUnspecifiedFeatures && isset( $features[ 'element' ] ) && !isset( $features[ 'content-links' ] ) ) { |
| 355 | $features[ 'content-links' ] = $features[ 'element' ]; |
| 356 | } |
| 357 | |
| 358 | // `content-parser-output` was renamed to `content-body`. |
| 359 | // No need to go through deprecation process here since content-parser-output added and removed in 1.36. |
| 360 | // Remove this check when no matches for |
| 361 | // https://codesearch.wmcloud.org/search/?q=content-parser-output&i=nope&files=&excludeFiles=&repos= |
| 362 | if ( isset( $features[ 'content-parser-output' ] ) ) { |
| 363 | $features[ 'content-body' ] = $features[ 'content-parser-output' ]; |
| 364 | unset( $features[ 'content-parser-output' ] ); |
| 365 | } |
| 366 | |
| 367 | // The interface module is a short hand for several modules. Enable them now. |
| 368 | if ( isset( $features[ 'interface' ] ) && $features[ 'interface' ] ) { |
| 369 | unset( $features[ 'interface' ] ); |
| 370 | $features[ 'interface-core' ] = true; |
| 371 | $features[ 'interface-indicators' ] = true; |
| 372 | $features[ 'interface-subtitle' ] = true; |
| 373 | $features[ 'interface-user-message' ] = true; |
| 374 | $features[ 'interface-site-notice' ] = true; |
| 375 | $features[ 'interface-edit-section-links' ] = true; |
| 376 | } |
| 377 | return $features; |
| 378 | } |
| 379 | |
| 380 | /** |
| 381 | * Get styles defined in the module definition. |
| 382 | * |
| 383 | * @return array |
| 384 | */ |
| 385 | public function getFeatureFilePaths() { |
| 386 | // Bypass the current module paths so that these files are served from core, |
| 387 | // instead of the individual skin's module directory. |
| 388 | [ $defaultLocalBasePath, $defaultRemoteBasePath ] = |
| 389 | FileModule::extractBasePaths( |
| 390 | [], |
| 391 | null, |
| 392 | $this->getConfig()->get( MainConfigNames::ResourceBasePath ) |
| 393 | ); |
| 394 | |
| 395 | $featureFilePaths = []; |
| 396 | |
| 397 | foreach ( self::FEATURE_FILES as $feature => $featureFiles ) { |
| 398 | if ( in_array( $feature, $this->features ) ) { |
| 399 | foreach ( $featureFiles as $mediaType => $files ) { |
| 400 | foreach ( $files as $filepath ) { |
| 401 | $featureFilePaths[$mediaType][] = new FilePath( |
| 402 | $filepath, |
| 403 | $defaultLocalBasePath, |
| 404 | $defaultRemoteBasePath |
| 405 | ); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | if ( $feature === 'content-media' ) { |
| 410 | if ( $this->getConfig()->get( MainConfigNames::UseLegacyMediaStyles ) ) { |
| 411 | $featureFilePaths['all'][] = new FilePath( |
| 412 | 'resources/src/mediawiki.skinning/content.thumbnails-common.less', |
| 413 | $defaultLocalBasePath, |
| 414 | $defaultRemoteBasePath |
| 415 | ); |
| 416 | $featureFilePaths['screen'][] = new FilePath( |
| 417 | 'resources/src/mediawiki.skinning/content.thumbnails-screen.less', |
| 418 | $defaultLocalBasePath, |
| 419 | $defaultRemoteBasePath |
| 420 | ); |
| 421 | $featureFilePaths['print'][] = new FilePath( |
| 422 | 'resources/src/mediawiki.skinning/content.thumbnails-print.less', |
| 423 | $defaultLocalBasePath, |
| 424 | $defaultRemoteBasePath |
| 425 | ); |
| 426 | } |
| 427 | if ( |
| 428 | !$this->getConfig()->get( MainConfigNames::ParserEnableLegacyMediaDOM ) || |
| 429 | $this->getConfig()->get( MainConfigNames::UseContentMediaStyles ) |
| 430 | ) { |
| 431 | $featureFilePaths['all'][] = new FilePath( |
| 432 | 'resources/src/mediawiki.skinning/content.media-common.less', |
| 433 | $defaultLocalBasePath, |
| 434 | $defaultRemoteBasePath |
| 435 | ); |
| 436 | $featureFilePaths['screen'][] = new FilePath( |
| 437 | 'resources/src/mediawiki.skinning/content.media-screen.less', |
| 438 | $defaultLocalBasePath, |
| 439 | $defaultRemoteBasePath |
| 440 | ); |
| 441 | $featureFilePaths['print'][] = new FilePath( |
| 442 | 'resources/src/mediawiki.skinning/content.media-print.less', |
| 443 | $defaultLocalBasePath, |
| 444 | $defaultRemoteBasePath |
| 445 | ); |
| 446 | } |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | return $featureFilePaths; |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * Combines feature styles and parent skin styles, ensuring that all |
| 455 | * feature styles are output *first*, followed by skin related styles. |
| 456 | * |
| 457 | * @param array $featureStyles |
| 458 | * @param array $parentStyles |
| 459 | * |
| 460 | * @return array |
| 461 | */ |
| 462 | private function combineFeatureAndParentStyles( $featureStyles, $parentStyles ) { |
| 463 | $combinedFeatureStyles = ResourceLoader::makeCombinedStyles( $featureStyles ); |
| 464 | $combinedParentStyles = ResourceLoader::makeCombinedStyles( $parentStyles ); |
| 465 | $combinedStyles = array_merge( $combinedFeatureStyles, $combinedParentStyles ); |
| 466 | return [ '' => $combinedStyles ]; |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * Generates CSS for .mw-logo-logo styles and appends them |
| 471 | * to the skin feature styles array. |
| 472 | * @param array $featureStyles |
| 473 | * @param Context $context |
| 474 | * @return array |
| 475 | */ |
| 476 | public function generateAndAppendLogoStyles( $featureStyles, $context ) { |
| 477 | $logo = $this->getLogoData( $this->getConfig(), $context->getLanguage() ); |
| 478 | $default = !is_array( $logo ) ? $logo : ( $logo['svg'] ?? $logo['1x'] ?? null ); |
| 479 | |
| 480 | // Can't add logo CSS if no logo defined. |
| 481 | if ( !$default ) { |
| 482 | return $featureStyles; |
| 483 | } |
| 484 | |
| 485 | $featureStyles['all'][] = '.mw-wiki-logo { background-image: ' . |
| 486 | CSSMin::buildUrlValue( $default ) . |
| 487 | '; }'; |
| 488 | |
| 489 | if ( is_array( $logo ) ) { |
| 490 | if ( isset( $logo['svg'] ) ) { |
| 491 | $featureStyles['all'][] = '.mw-wiki-logo { ' . |
| 492 | 'background-size: 135px auto; }'; |
| 493 | } else { |
| 494 | if ( isset( $logo['1.5x'] ) ) { |
| 495 | $featureStyles[ |
| 496 | '(-webkit-min-device-pixel-ratio: 1.5), ' . |
| 497 | '(min-resolution: 1.5dppx), ' . |
| 498 | '(min-resolution: 144dpi)' |
| 499 | ][] = '.mw-wiki-logo { background-image: ' . |
| 500 | CSSMin::buildUrlValue( $logo['1.5x'] ) . ';' . |
| 501 | 'background-size: 135px auto; }'; |
| 502 | } |
| 503 | if ( isset( $logo['2x'] ) ) { |
| 504 | $featureStyles[ |
| 505 | '(-webkit-min-device-pixel-ratio: 2), ' . |
| 506 | '(min-resolution: 2dppx), ' . |
| 507 | '(min-resolution: 192dpi)' |
| 508 | ][] = '.mw-wiki-logo { background-image: ' . |
| 509 | CSSMin::buildUrlValue( $logo['2x'] ) . ';' . |
| 510 | 'background-size: 135px auto; }'; |
| 511 | } |
| 512 | } |
| 513 | } |
| 514 | return $featureStyles; |
| 515 | } |
| 516 | |
| 517 | /** |
| 518 | * @param Context $context |
| 519 | * @return array |
| 520 | */ |
| 521 | public function getStyles( Context $context ) { |
| 522 | $parentStyles = parent::getStyles( $context ); |
| 523 | $featureFilePaths = $this->getFeatureFilePaths(); |
| 524 | $featureStyles = $this->readStyleFiles( $featureFilePaths, $context ); |
| 525 | |
| 526 | $this->normalizeStyles( $featureStyles ); |
| 527 | $this->normalizeStyles( $parentStyles ); |
| 528 | |
| 529 | $isLogoFeatureEnabled = in_array( 'logo', $this->features ); |
| 530 | if ( $isLogoFeatureEnabled ) { |
| 531 | $featureStyles = $this->generateAndAppendLogoStyles( $featureStyles, $context ); |
| 532 | } |
| 533 | |
| 534 | return $this->combineFeatureAndParentStyles( $featureStyles, $parentStyles ); |
| 535 | } |
| 536 | |
| 537 | /** |
| 538 | * @param Context $context |
| 539 | * @return array |
| 540 | */ |
| 541 | public function getPreloadLinks( Context $context ): array { |
| 542 | if ( !in_array( 'logo', $this->features ) ) { |
| 543 | return []; |
| 544 | } |
| 545 | |
| 546 | $logo = $this->getLogoData( $this->getConfig(), $context->getLanguage() ); |
| 547 | |
| 548 | if ( !is_array( $logo ) ) { |
| 549 | // No media queries required if we only have one variant |
| 550 | return [ $logo => [ 'as' => 'image' ] ]; |
| 551 | } |
| 552 | |
| 553 | if ( isset( $logo['svg'] ) ) { |
| 554 | // No media queries required if we only have a 1x and svg variant |
| 555 | // because all preload-capable browsers support SVGs |
| 556 | return [ $logo['svg'] => [ 'as' => 'image' ] ]; |
| 557 | } |
| 558 | |
| 559 | $logosPerDppx = []; |
| 560 | foreach ( $logo as $dppx => $src ) { |
| 561 | // Keys are in this format: "1.5x" |
| 562 | $dppx = substr( $dppx, 0, -1 ); |
| 563 | $logosPerDppx[$dppx] = $src; |
| 564 | } |
| 565 | |
| 566 | // Because PHP can't have floats as array keys |
| 567 | uksort( $logosPerDppx, static function ( $a, $b ) { |
| 568 | $a = floatval( $a ); |
| 569 | $b = floatval( $b ); |
| 570 | // Sort from smallest to largest (e.g. 1x, 1.5x, 2x) |
| 571 | return $a <=> $b; |
| 572 | } ); |
| 573 | |
| 574 | $logos = []; |
| 575 | foreach ( $logosPerDppx as $dppx => $src ) { |
| 576 | $logos[] = [ |
| 577 | 'dppx' => $dppx, |
| 578 | 'src' => $src |
| 579 | ]; |
| 580 | } |
| 581 | |
| 582 | $logosCount = count( $logos ); |
| 583 | $preloadLinks = []; |
| 584 | // Logic must match SkinModule: |
| 585 | // - 1x applies to resolution < 1.5dppx |
| 586 | // - 1.5x applies to resolution >= 1.5dppx && < 2dppx |
| 587 | // - 2x applies to resolution >= 2dppx |
| 588 | // Note that min-resolution and max-resolution are both inclusive. |
| 589 | for ( $i = 0; $i < $logosCount; $i++ ) { |
| 590 | if ( $i === 0 ) { |
| 591 | // Smallest dppx |
| 592 | // min-resolution is ">=" (larger than or equal to) |
| 593 | // "not min-resolution" is essentially "<" |
| 594 | $media_query = 'not all and (min-resolution: ' . $logos[1]['dppx'] . 'dppx)'; |
| 595 | } elseif ( $i !== $logosCount - 1 ) { |
| 596 | // In between |
| 597 | // Media query expressions can only apply "not" to the entire expression |
| 598 | // (e.g. can't express ">= 1.5 and not >= 2). |
| 599 | // Workaround: Use <= 1.9999 in place of < 2. |
| 600 | $upper_bound = floatval( $logos[$i + 1]['dppx'] ) - 0.000001; |
| 601 | $media_query = '(min-resolution: ' . $logos[$i]['dppx'] . |
| 602 | 'dppx) and (max-resolution: ' . $upper_bound . 'dppx)'; |
| 603 | } else { |
| 604 | // Largest dppx |
| 605 | $media_query = '(min-resolution: ' . $logos[$i]['dppx'] . 'dppx)'; |
| 606 | } |
| 607 | |
| 608 | $preloadLinks[$logos[$i]['src']] = [ |
| 609 | 'as' => 'image', |
| 610 | 'media' => $media_query |
| 611 | ]; |
| 612 | } |
| 613 | |
| 614 | return $preloadLinks; |
| 615 | } |
| 616 | |
| 617 | /** |
| 618 | * Ensure all media keys use array values. |
| 619 | * |
| 620 | * Normalises arrays returned by the FileModule::getStyles() method. |
| 621 | * |
| 622 | * @param array &$styles Associative array, keys are strings (media queries), |
| 623 | * values are strings or arrays |
| 624 | */ |
| 625 | private function normalizeStyles( array &$styles ): void { |
| 626 | foreach ( $styles as $key => $val ) { |
| 627 | if ( !is_array( $val ) ) { |
| 628 | $styles[$key] = [ $val ]; |
| 629 | } |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * Modifies configured logo width/height to ensure they are present and scalable |
| 635 | * with different font-sizes. |
| 636 | * @param array $logoElement with width, height and src keys. |
| 637 | * @return array modified version of $logoElement |
| 638 | */ |
| 639 | private static function getRelativeSizedLogo( array $logoElement ) { |
| 640 | $width = $logoElement['width']; |
| 641 | $height = $logoElement['height']; |
| 642 | $widthRelative = $width / 16; |
| 643 | $heightRelative = $height / 16; |
| 644 | // Allow skins to scale the wordmark with browser font size (T207789) |
| 645 | $logoElement['style'] = 'width: ' . $widthRelative . 'em; height: ' . $heightRelative . 'em;'; |
| 646 | return $logoElement; |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * Return an array of all available logos that a skin may use. |
| 651 | * @since 1.35 |
| 652 | * @param Config $conf |
| 653 | * @param string|null $lang Language code for logo variant, since 1.39 |
| 654 | * @return array with the following keys: |
| 655 | * - 1x(string): a square logo composing the `icon` and `wordmark` (required) |
| 656 | * - 2x (string): a square logo for HD displays (optional) |
| 657 | * - wordmark (object): a rectangle logo (wordmark) for print media and skins which desire |
| 658 | * horizontal logo (optional). Must declare width and height fields, defined in pixels |
| 659 | * which will be converted to ems based on 16px font-size. |
| 660 | * - tagline (object): replaces `tagline` message in certain skins. Must declare width and |
| 661 | * height fields defined in pixels, which are converted to ems based on 16px font-size. |
| 662 | * - icon (string): a square logo similar to 1x, but without the wordmark. SVG recommended. |
| 663 | */ |
| 664 | public static function getAvailableLogos( Config $conf, string $lang = null ): array { |
| 665 | $logos = $conf->get( MainConfigNames::Logos ); |
| 666 | if ( $logos === false ) { |
| 667 | // no logos were defined... this will either |
| 668 | // 1. Load from wgLogo |
| 669 | // 2. Trigger runtime exception if those are not defined. |
| 670 | $logos = []; |
| 671 | } |
| 672 | if ( $lang && isset( $logos['variants'][$lang] ) ) { |
| 673 | foreach ( $logos['variants'][$lang] as $type => $value ) { |
| 674 | $logos[$type] = $value; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | // If logos['1x'] is not defined, see if we can use wgLogo |
| 679 | if ( !isset( $logos[ '1x' ] ) ) { |
| 680 | $logo = $conf->get( MainConfigNames::Logo ); |
| 681 | if ( $logo ) { |
| 682 | $logos['1x'] = $logo; |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | if ( isset( $logos['wordmark'] ) ) { |
| 687 | // Allow skins to scale the wordmark with browser font size (T207789) |
| 688 | $logos['wordmark'] = self::getRelativeSizedLogo( $logos['wordmark'] ); |
| 689 | } |
| 690 | if ( isset( $logos['tagline'] ) ) { |
| 691 | $logos['tagline'] = self::getRelativeSizedLogo( $logos['tagline'] ); |
| 692 | } |
| 693 | |
| 694 | return $logos; |
| 695 | } |
| 696 | |
| 697 | /** |
| 698 | * @since 1.31 |
| 699 | * @param Config $conf |
| 700 | * @param string|null $lang Language code for logo variant, since 1.39 |
| 701 | * @return string|array Single url if no variants are defined, |
| 702 | * or an array of logo urls keyed by dppx in form "<float>x". |
| 703 | * Key "1x" is always defined. Key "svg" may also be defined, |
| 704 | * in which case variants other than "1x" are omitted. |
| 705 | */ |
| 706 | protected function getLogoData( Config $conf, string $lang = null ) { |
| 707 | $logoHD = self::getAvailableLogos( $conf, $lang ); |
| 708 | $logo = $logoHD['1x']; |
| 709 | |
| 710 | $logo1Url = OutputPage::transformResourcePath( $conf, $logo ); |
| 711 | |
| 712 | $logoUrls = [ |
| 713 | '1x' => $logo1Url, |
| 714 | ]; |
| 715 | |
| 716 | if ( isset( $logoHD['svg'] ) ) { |
| 717 | $logoUrls['svg'] = OutputPage::transformResourcePath( |
| 718 | $conf, |
| 719 | $logoHD['svg'] |
| 720 | ); |
| 721 | } elseif ( isset( $logoHD['1.5x'] ) || isset( $logoHD['2x'] ) ) { |
| 722 | // Only 1.5x and 2x are supported |
| 723 | if ( isset( $logoHD['1.5x'] ) ) { |
| 724 | $logoUrls['1.5x'] = OutputPage::transformResourcePath( |
| 725 | $conf, |
| 726 | $logoHD['1.5x'] |
| 727 | ); |
| 728 | } |
| 729 | if ( isset( $logoHD['2x'] ) ) { |
| 730 | $logoUrls['2x'] = OutputPage::transformResourcePath( |
| 731 | $conf, |
| 732 | $logoHD['2x'] |
| 733 | ); |
| 734 | } |
| 735 | } else { |
| 736 | // Return a string rather than a one-element array, getLogoPreloadlinks depends on this |
| 737 | return $logo1Url; |
| 738 | } |
| 739 | |
| 740 | return $logoUrls; |
| 741 | } |
| 742 | |
| 743 | /** |
| 744 | * @param Context $context |
| 745 | * @return bool |
| 746 | */ |
| 747 | public function isKnownEmpty( Context $context ) { |
| 748 | // Regardless of whether the files are specified, we always |
| 749 | // provide mw-wiki-logo styles. |
| 750 | return false; |
| 751 | } |
| 752 | |
| 753 | /** |
| 754 | * Get language-specific LESS variables for this module. |
| 755 | * |
| 756 | * @param Context $context |
| 757 | * @return array |
| 758 | */ |
| 759 | protected function getLessVars( Context $context ) { |
| 760 | $lessVars = parent::getLessVars( $context ); |
| 761 | $logos = self::getAvailableLogos( $this->getConfig() ); |
| 762 | |
| 763 | if ( isset( $logos['wordmark'] ) ) { |
| 764 | $logo = $logos['wordmark']; |
| 765 | $lessVars[ 'logo-enabled' ] = true; |
| 766 | $lessVars[ 'logo-wordmark-url' ] = CSSMin::buildUrlValue( $logo['src'] ); |
| 767 | $lessVars[ 'logo-wordmark-width' ] = intval( $logo['width'] ); |
| 768 | $lessVars[ 'logo-wordmark-height' ] = intval( $logo['height'] ); |
| 769 | } else { |
| 770 | $lessVars[ 'logo-enabled' ] = false; |
| 771 | } |
| 772 | return $lessVars; |
| 773 | } |
| 774 | |
| 775 | public function getDefinitionSummary( Context $context ) { |
| 776 | $summary = parent::getDefinitionSummary( $context ); |
| 777 | $summary[] = [ |
| 778 | 'logos' => self::getAvailableLogos( $this->getConfig() ), |
| 779 | ]; |
| 780 | return $summary; |
| 781 | } |
| 782 | } |