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| 1 | <?php |
| 2 | /** |
| 3 | * @license GPL-2.0-or-later |
| 4 | * @file |
| 5 | */ |
| 6 | |
| 7 | namespace MediaWiki\RecentChanges; |
| 8 | |
| 9 | use InvalidArgumentException; |
| 10 | use MediaWiki\Context\IContextSource; |
| 11 | use MediaWiki\Html\FormOptions; |
| 12 | use MediaWiki\RecentChanges\ChangesListQuery\ChangesListQuery; |
| 13 | |
| 14 | /** |
| 15 | * Represents a filter (used on ChangesListSpecialPage and descendants) |
| 16 | * |
| 17 | * @since 1.29 |
| 18 | * @ingroup RecentChanges |
| 19 | * @author Matthew Flaschen |
| 20 | */ |
| 21 | abstract class ChangesListFilter { |
| 22 | /** |
| 23 | * Filter name |
| 24 | * |
| 25 | * @var string |
| 26 | */ |
| 27 | protected $name; |
| 28 | |
| 29 | /** |
| 30 | * CSS class suffix used for attribution, e.g. 'bot'. |
| 31 | * |
| 32 | * In this example, if bot actions are included in the result set, this CSS class |
| 33 | * will then be included in all bot-flagged actions. |
| 34 | * |
| 35 | * @var string|null |
| 36 | */ |
| 37 | protected $cssClassSuffix; |
| 38 | |
| 39 | /** |
| 40 | * Callable that returns true if and only if a row is attributed to this filter |
| 41 | * |
| 42 | * @var callable|null |
| 43 | */ |
| 44 | protected $isRowApplicableCallable; |
| 45 | |
| 46 | /** |
| 47 | * Group. ChangesListFilterGroup this belongs to |
| 48 | * |
| 49 | * @var ChangesListFilterGroup |
| 50 | */ |
| 51 | protected $group; |
| 52 | |
| 53 | /** |
| 54 | * i18n key of label for structured UI |
| 55 | * |
| 56 | * @var string |
| 57 | */ |
| 58 | protected $label; |
| 59 | |
| 60 | /** |
| 61 | * i18n key of description for structured UI |
| 62 | * |
| 63 | * @var string |
| 64 | */ |
| 65 | protected $description; |
| 66 | |
| 67 | /** |
| 68 | * Array of associative arrays with conflict information. See |
| 69 | * setUnidirectionalConflict |
| 70 | * |
| 71 | * @var array |
| 72 | */ |
| 73 | protected $conflictingGroups = []; |
| 74 | |
| 75 | /** |
| 76 | * Array of associative arrays with conflict information. See |
| 77 | * setUnidirectionalConflict |
| 78 | * |
| 79 | * @var array |
| 80 | */ |
| 81 | protected $conflictingFilters = []; |
| 82 | |
| 83 | /** |
| 84 | * Array of associative arrays with subset information |
| 85 | * |
| 86 | * @var array |
| 87 | */ |
| 88 | protected $subsetFilters = []; |
| 89 | |
| 90 | /** |
| 91 | * Priority integer. Higher value means higher up in the group's filter list. |
| 92 | * |
| 93 | * @var int |
| 94 | */ |
| 95 | protected $priority; |
| 96 | |
| 97 | /** |
| 98 | * @var string |
| 99 | */ |
| 100 | protected $defaultHighlightColor; |
| 101 | |
| 102 | /** @var array|null */ |
| 103 | private $action = null; |
| 104 | /** @var array|null */ |
| 105 | private $highlight = null; |
| 106 | |
| 107 | private const RESERVED_NAME_CHAR = '_'; |
| 108 | |
| 109 | /** |
| 110 | * Creates a new filter with the specified configuration, and registers it to the |
| 111 | * specified group. |
| 112 | * |
| 113 | * It infers which UI (it can be either or both) to display the filter on based on |
| 114 | * which messages are provided. |
| 115 | * |
| 116 | * If 'label' is provided, it will be displayed on the structured UI. Thus, |
| 117 | * 'label', 'description', and sub-class parameters are optional depending on which |
| 118 | * UI it's for. |
| 119 | * |
| 120 | * @param array $filterDefinition ChangesListFilter definition |
| 121 | * * $filterDefinition['name'] string Name of filter; use lowercase with no |
| 122 | * punctuation |
| 123 | * * $filterDefinition['cssClassSuffix'] string CSS class suffix, used to mark |
| 124 | * that a particular row belongs to this filter (when a row is included by the |
| 125 | * filter) (optional) |
| 126 | * * $filterDefinition['isRowApplicableCallable'] callable Callable taking two parameters, the |
| 127 | * IContextSource, and the RecentChange object for the row, and returning true if |
| 128 | * the row is attributed to this filter. The above CSS class will then be |
| 129 | * automatically added (optional, required if cssClassSuffix is used). |
| 130 | * * $filterDefinition['action'] array Array of parameters to pass to |
| 131 | * ChangesListQuery::filter(). The first element is the verb "require" or "exclude", the |
| 132 | * second element is the module name, and the optional third element is the value. |
| 133 | * Or an array of such actions. This supersedes isRowApplicableCallable. |
| 134 | * * $filterDefinition['highlight'] array An action in the same format as |
| 135 | * $filterDefinition['action'] to be used for highlighting. Falls back to 'action' |
| 136 | * if not set. |
| 137 | * * $filterDefinition['group'] ChangesListFilterGroup Group. Filter group this |
| 138 | * belongs to. |
| 139 | * * $filterDefinition['label'] string i18n key of label for structured UI. |
| 140 | * * $filterDefinition['description'] string i18n key of description for structured |
| 141 | * UI. |
| 142 | * * $filterDefinition['priority'] int Priority integer. Higher value means higher |
| 143 | * up in the group's filter list. |
| 144 | * @phpcs:ignore Generic.Files.LineLength |
| 145 | * @phan-param array{name:string,cssClassSuffix?:string,isRowApplicableCallable?:callable,group:ChangesListFilterGroup,label:string,description:string,priority:int} $filterDefinition |
| 146 | */ |
| 147 | public function __construct( array $filterDefinition ) { |
| 148 | if ( isset( $filterDefinition['group'] ) ) { |
| 149 | $this->group = $filterDefinition['group']; |
| 150 | } else { |
| 151 | throw new InvalidArgumentException( 'You must use \'group\' to specify the ' . |
| 152 | 'ChangesListFilterGroup this filter belongs to' ); |
| 153 | } |
| 154 | |
| 155 | if ( str_contains( $filterDefinition['name'], self::RESERVED_NAME_CHAR ) ) { |
| 156 | throw new InvalidArgumentException( 'Filter names may not contain \'' . |
| 157 | self::RESERVED_NAME_CHAR . |
| 158 | '\'. Use the naming convention: \'lowercase\'' |
| 159 | ); |
| 160 | } |
| 161 | |
| 162 | if ( $this->group->getFilter( $filterDefinition['name'] ) ) { |
| 163 | throw new InvalidArgumentException( 'Two filters in a group cannot have the ' . |
| 164 | "same name: '{$filterDefinition['name']}'" ); |
| 165 | } |
| 166 | |
| 167 | $this->name = $filterDefinition['name']; |
| 168 | |
| 169 | if ( isset( $filterDefinition['cssClassSuffix'] ) ) { |
| 170 | $this->cssClassSuffix = $filterDefinition['cssClassSuffix']; |
| 171 | $this->isRowApplicableCallable = $filterDefinition['isRowApplicableCallable'] ?? null; |
| 172 | } |
| 173 | |
| 174 | if ( isset( $filterDefinition['label'] ) ) { |
| 175 | $this->label = $filterDefinition['label']; |
| 176 | $this->description = $filterDefinition['description']; |
| 177 | } |
| 178 | |
| 179 | $this->priority = $filterDefinition['priority']; |
| 180 | $this->action = $filterDefinition['action'] ?? null; |
| 181 | $this->highlight = $filterDefinition['highlight'] ?? null; |
| 182 | |
| 183 | $this->group->registerFilter( $this ); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Marks that the given ChangesListFilterGroup or ChangesListFilter conflicts with this object. |
| 188 | * |
| 189 | * WARNING: This means there is a conflict when both things are *shown* |
| 190 | * (not filtered out), even for the hide-based filters. So e.g. conflicting with |
| 191 | * 'hideanons' means there is a conflict if only anonymous users are *shown*. |
| 192 | * |
| 193 | * @param ChangesListFilterGroup|ChangesListFilter $other |
| 194 | * @param string $globalKey i18n key for top-level conflict message |
| 195 | * @param string $forwardKey i18n key for conflict message in this |
| 196 | * direction (when in UI context of $this object) |
| 197 | * @param string $backwardKey i18n key for conflict message in reverse |
| 198 | * direction (when in UI context of $other object) |
| 199 | */ |
| 200 | public function conflictsWith( $other, string $globalKey, string $forwardKey, string $backwardKey ) { |
| 201 | $this->setUnidirectionalConflict( |
| 202 | $other, |
| 203 | $globalKey, |
| 204 | $forwardKey |
| 205 | ); |
| 206 | |
| 207 | $other->setUnidirectionalConflict( |
| 208 | $this, |
| 209 | $globalKey, |
| 210 | $backwardKey |
| 211 | ); |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Marks that the given ChangesListFilterGroup or ChangesListFilter conflicts with |
| 216 | * this object. |
| 217 | * |
| 218 | * Internal use ONLY. |
| 219 | * |
| 220 | * @param ChangesListFilterGroup|ChangesListFilter $other |
| 221 | * @param string $globalDescription i18n key for top-level conflict message |
| 222 | * @param string $contextDescription i18n key for conflict message in this |
| 223 | * direction (when in UI context of $this object) |
| 224 | */ |
| 225 | public function setUnidirectionalConflict( $other, $globalDescription, $contextDescription ) { |
| 226 | if ( $other instanceof ChangesListFilterGroup ) { |
| 227 | $this->conflictingGroups[] = [ |
| 228 | 'group' => $other->getName(), |
| 229 | 'groupObject' => $other, |
| 230 | 'globalDescription' => $globalDescription, |
| 231 | 'contextDescription' => $contextDescription, |
| 232 | ]; |
| 233 | } elseif ( $other instanceof ChangesListFilter ) { |
| 234 | $this->conflictingFilters[] = [ |
| 235 | 'group' => $other->getGroup()->getName(), |
| 236 | 'filter' => $other->getName(), |
| 237 | 'filterObject' => $other, |
| 238 | 'globalDescription' => $globalDescription, |
| 239 | 'contextDescription' => $contextDescription, |
| 240 | ]; |
| 241 | } else { |
| 242 | throw new InvalidArgumentException( |
| 243 | 'You can only pass in a ChangesListFilterGroup or a ChangesListFilter' |
| 244 | ); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * Marks that the current instance is (also) a superset of the filter passed in. |
| 250 | * This can be called more than once. |
| 251 | * |
| 252 | * This means that anything in the results for the other filter is also in the |
| 253 | * results for this one. |
| 254 | * |
| 255 | * @param ChangesListFilter $other The filter the current instance is a superset of |
| 256 | */ |
| 257 | public function setAsSupersetOf( ChangesListFilter $other ) { |
| 258 | if ( $other->getGroup() !== $this->getGroup() ) { |
| 259 | throw new InvalidArgumentException( 'Supersets can only be defined for filters in the same group' ); |
| 260 | } |
| 261 | |
| 262 | $this->subsetFilters[] = [ |
| 263 | // It's always the same group, but this makes the representation |
| 264 | // more consistent with conflicts. |
| 265 | 'group' => $other->getGroup()->getName(), |
| 266 | 'filter' => $other->getName(), |
| 267 | ]; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * @return string Name, e.g. hideanons |
| 272 | */ |
| 273 | public function getName() { |
| 274 | return $this->name; |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * @return ChangesListFilterGroup Group this belongs to |
| 279 | */ |
| 280 | public function getGroup() { |
| 281 | return $this->group; |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * @return string i18n key of label for structured UI |
| 286 | */ |
| 287 | public function getLabel() { |
| 288 | return $this->label; |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * @return string i18n key of description for structured UI |
| 293 | */ |
| 294 | public function getDescription() { |
| 295 | return $this->description; |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * Checks whether the filter should display on the unstructured UI |
| 300 | * |
| 301 | * @return bool Whether to display |
| 302 | */ |
| 303 | abstract public function displaysOnUnstructuredUi(); |
| 304 | |
| 305 | /** |
| 306 | * Checks whether the filter should display on the structured UI |
| 307 | * This refers to the exact filter. See also isFeatureAvailableOnStructuredUi. |
| 308 | * |
| 309 | * @return bool Whether to display |
| 310 | */ |
| 311 | public function displaysOnStructuredUi() { |
| 312 | return $this->label !== null; |
| 313 | } |
| 314 | |
| 315 | /** |
| 316 | * Checks whether an equivalent feature for this filter is available on the |
| 317 | * structured UI. |
| 318 | * |
| 319 | * This can either be the exact filter, or a new filter that replaces it. |
| 320 | * @return bool |
| 321 | */ |
| 322 | public function isFeatureAvailableOnStructuredUi() { |
| 323 | return $this->displaysOnStructuredUi(); |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * @return int Priority. Higher value means higher up in the group list |
| 328 | */ |
| 329 | public function getPriority() { |
| 330 | return $this->priority; |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Gets the CSS class |
| 335 | * |
| 336 | * @return string|null CSS class, or null if not defined |
| 337 | */ |
| 338 | public function getCssClass() { |
| 339 | if ( $this->cssClassSuffix !== null ) { |
| 340 | return ChangesList::CSS_CLASS_PREFIX . $this->cssClassSuffix; |
| 341 | } else { |
| 342 | return null; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * Add CSS class if needed |
| 348 | * |
| 349 | * @param IContextSource $ctx Context source |
| 350 | * @param RecentChange $rc Recent changes object |
| 351 | * @param array &$classes Non-associative array of CSS class names; appended to if needed |
| 352 | */ |
| 353 | public function applyCssClassIfNeeded( IContextSource $ctx, RecentChange $rc, array &$classes ) { |
| 354 | if ( $this->isRowApplicableCallable === null ) { |
| 355 | return; |
| 356 | } |
| 357 | |
| 358 | if ( ( $this->isRowApplicableCallable )( $ctx, $rc ) ) { |
| 359 | $classes[] = $this->getCssClass(); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | /** |
| 364 | * Gets the JS data required by the front-end of the structured UI |
| 365 | * |
| 366 | * @return array Associative array Data required by the front-end. messageKeys is |
| 367 | * a special top-level value, with the value being an array of the message keys to |
| 368 | * send to the client. |
| 369 | */ |
| 370 | public function getJsData() { |
| 371 | $output = [ |
| 372 | 'name' => $this->getName(), |
| 373 | 'label' => $this->getLabel(), |
| 374 | 'description' => $this->getDescription(), |
| 375 | 'cssClass' => $this->getCssClass(), |
| 376 | 'priority' => $this->priority, |
| 377 | 'subset' => $this->subsetFilters, |
| 378 | 'conflicts' => [], |
| 379 | 'defaultHighlightColor' => $this->defaultHighlightColor |
| 380 | ]; |
| 381 | |
| 382 | $output['messageKeys'] = [ |
| 383 | $this->getLabel(), |
| 384 | $this->getDescription(), |
| 385 | ]; |
| 386 | |
| 387 | $conflicts = array_merge( |
| 388 | $this->conflictingGroups, |
| 389 | $this->conflictingFilters |
| 390 | ); |
| 391 | |
| 392 | foreach ( $conflicts as $conflictInfo ) { |
| 393 | unset( $conflictInfo['filterObject'] ); |
| 394 | unset( $conflictInfo['groupObject'] ); |
| 395 | $output['conflicts'][] = $conflictInfo; |
| 396 | array_push( |
| 397 | $output['messageKeys'], |
| 398 | $conflictInfo['globalDescription'], |
| 399 | $conflictInfo['contextDescription'] |
| 400 | ); |
| 401 | } |
| 402 | |
| 403 | return $output; |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * Checks whether this filter is selected in the provided options |
| 408 | * |
| 409 | * @param FormOptions $opts |
| 410 | * @return bool |
| 411 | */ |
| 412 | abstract public function isSelected( FormOptions $opts ); |
| 413 | |
| 414 | /** |
| 415 | * @param FormOptions $opts Query parameters merged with defaults |
| 416 | * @param bool $isStructuredUI Whether the structured UI is currently enabled |
| 417 | * @return bool Whether this filter should be considered active |
| 418 | */ |
| 419 | abstract public function isActive( FormOptions $opts, $isStructuredUI ); |
| 420 | |
| 421 | /** |
| 422 | * Get the action to apply to the ChangesListQuery for filtering. This may |
| 423 | * also return an array of actions. |
| 424 | * |
| 425 | * @see ChangesListQuery::applyAction |
| 426 | * |
| 427 | * @return array|null |
| 428 | */ |
| 429 | public function getAction(): ?array { |
| 430 | return $this->action; |
| 431 | } |
| 432 | |
| 433 | /** |
| 434 | * Get the action to apply to the ChangesListQuery for highlighting. |
| 435 | * |
| 436 | * @return array|null |
| 437 | */ |
| 438 | public function getHighlightAction(): ?array { |
| 439 | return $this->highlight ?? $this->action; |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * Get groups conflicting with this filter |
| 444 | * |
| 445 | * @return ChangesListFilterGroup[] |
| 446 | */ |
| 447 | public function getConflictingGroups() { |
| 448 | return array_column( $this->conflictingGroups, 'groupObject' ); |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Get filters conflicting with this filter |
| 453 | * |
| 454 | * @return ChangesListFilter[] |
| 455 | */ |
| 456 | public function getConflictingFilters() { |
| 457 | return array_column( $this->conflictingFilters, 'filterObject' ); |
| 458 | } |
| 459 | |
| 460 | /** |
| 461 | * Check if the conflict with a group is currently "active" |
| 462 | * |
| 463 | * @param ChangesListFilterGroup $group |
| 464 | * @param FormOptions $opts |
| 465 | * @return bool |
| 466 | */ |
| 467 | public function activelyInConflictWithGroup( ChangesListFilterGroup $group, FormOptions $opts ) { |
| 468 | if ( $group->anySelected( $opts ) && $this->isSelected( $opts ) ) { |
| 469 | /** @var ChangesListFilter $siblingFilter */ |
| 470 | foreach ( $this->getSiblings() as $siblingFilter ) { |
| 471 | if ( $siblingFilter->isSelected( $opts ) && !$siblingFilter->hasConflictWithGroup( $group ) ) { |
| 472 | return false; |
| 473 | } |
| 474 | } |
| 475 | return true; |
| 476 | } |
| 477 | return false; |
| 478 | } |
| 479 | |
| 480 | private function hasConflictWithGroup( ChangesListFilterGroup $group ): bool { |
| 481 | return in_array( $group, $this->getConflictingGroups() ); |
| 482 | } |
| 483 | |
| 484 | /** |
| 485 | * Check if the conflict with a filter is currently "active" |
| 486 | * |
| 487 | * @param ChangesListFilter $filter |
| 488 | * @param FormOptions $opts |
| 489 | * @return bool |
| 490 | */ |
| 491 | public function activelyInConflictWithFilter( ChangesListFilter $filter, FormOptions $opts ) { |
| 492 | if ( $this->isSelected( $opts ) && $filter->isSelected( $opts ) ) { |
| 493 | /** @var ChangesListFilter $siblingFilter */ |
| 494 | foreach ( $this->getSiblings() as $siblingFilter ) { |
| 495 | if ( |
| 496 | $siblingFilter->isSelected( $opts ) && |
| 497 | !$siblingFilter->hasConflictWithFilter( $filter ) |
| 498 | ) { |
| 499 | return false; |
| 500 | } |
| 501 | } |
| 502 | return true; |
| 503 | } |
| 504 | return false; |
| 505 | } |
| 506 | |
| 507 | private function hasConflictWithFilter( ChangesListFilter $filter ): bool { |
| 508 | return in_array( $filter, $this->getConflictingFilters() ); |
| 509 | } |
| 510 | |
| 511 | /** |
| 512 | * Get filters in the same group |
| 513 | * |
| 514 | * @return ChangesListFilter[] |
| 515 | */ |
| 516 | protected function getSiblings() { |
| 517 | return array_filter( |
| 518 | $this->getGroup()->getFilters(), |
| 519 | function ( $filter ) { |
| 520 | return $filter !== $this; |
| 521 | } |
| 522 | ); |
| 523 | } |
| 524 | |
| 525 | /** |
| 526 | * @param string $defaultHighlightColor |
| 527 | */ |
| 528 | public function setDefaultHighlightColor( $defaultHighlightColor ) { |
| 529 | $this->defaultHighlightColor = $defaultHighlightColor; |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | /** @deprecated class alias since 1.44 */ |
| 534 | class_alias( ChangesListFilter::class, 'ChangesListFilter' ); |