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| 1 | <?php |
| 2 | |
| 3 | namespace Flow; |
| 4 | |
| 5 | use Article; |
| 6 | use ContextSource; |
| 7 | use Flow\Block\AbstractBlock; |
| 8 | use Flow\Block\Block; |
| 9 | use Flow\Block\TopicBlock; |
| 10 | use Flow\Exception\InvalidActionException; |
| 11 | use Flow\Hooks\HookRunner; |
| 12 | use Flow\Model\Anchor; |
| 13 | use Flow\Model\HtmlRenderingInformation; |
| 14 | use Flow\Model\UUID; |
| 15 | use Flow\Model\Workflow; |
| 16 | use IContextSource; |
| 17 | use MediaWiki\Html\Html; |
| 18 | use MediaWiki\MediaWikiServices; |
| 19 | use MediaWiki\Output\OutputPage; |
| 20 | use MediaWiki\SpecialPage\SpecialPage; |
| 21 | use MediaWiki\Title\Title; |
| 22 | use Message; |
| 23 | |
| 24 | class View extends ContextSource { |
| 25 | /** |
| 26 | * @var UrlGenerator |
| 27 | */ |
| 28 | protected $urlGenerator; |
| 29 | |
| 30 | /** |
| 31 | * @var TemplateHelper |
| 32 | */ |
| 33 | protected $lightncandy; |
| 34 | |
| 35 | /** |
| 36 | * @var FlowActions |
| 37 | */ |
| 38 | protected $actions; |
| 39 | |
| 40 | public function __construct( |
| 41 | UrlGenerator $urlGenerator, |
| 42 | TemplateHelper $lightncandy, |
| 43 | IContextSource $requestContext, |
| 44 | FlowActions $actions |
| 45 | ) { |
| 46 | $this->urlGenerator = $urlGenerator; |
| 47 | $this->lightncandy = $lightncandy; |
| 48 | $this->setContext( $requestContext ); |
| 49 | $this->actions = $actions; |
| 50 | } |
| 51 | |
| 52 | public function show( WorkflowLoader $loader, $action ) { |
| 53 | $blocks = $loader->getBlocks(); |
| 54 | |
| 55 | $parameters = $this->extractBlockParameters( $action, $blocks ); |
| 56 | foreach ( $loader->getBlocks() as $block ) { |
| 57 | $block->init( $this, $action ); |
| 58 | } |
| 59 | |
| 60 | if ( $this->getRequest()->wasPosted() ) { |
| 61 | $retval = $this->handleSubmit( $loader, $action, $parameters ); |
| 62 | // successful submission |
| 63 | if ( $retval === true ) { |
| 64 | $this->redirect( $loader->getWorkflow() ); |
| 65 | return; |
| 66 | // only render the returned subset of blocks |
| 67 | } elseif ( is_array( $retval ) ) { |
| 68 | $blocks = $retval; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | $apiResponse = $this->buildApiResponse( $loader, $blocks, $action, $parameters ); |
| 73 | |
| 74 | $output = $this->getOutput(); |
| 75 | $output->enableOOUI(); |
| 76 | $this->addModules( $output, $action ); |
| 77 | // Please note that all blocks can set page title, which may cause them |
| 78 | // to override one another's titles |
| 79 | foreach ( $blocks as $block ) { |
| 80 | $block->setPageTitle( $output ); |
| 81 | } |
| 82 | |
| 83 | if ( $this->actions->getValue( $action, 'hasUserGeneratedContent' ) ) { |
| 84 | $output->setCopyright( true ); |
| 85 | } |
| 86 | |
| 87 | $robotPolicy = $this->getRobotPolicy( $action, $loader->getWorkflow(), $blocks ); |
| 88 | $this->renderApiResponse( $apiResponse, $robotPolicy ); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * @param string $action |
| 93 | * @param Workflow $workflow |
| 94 | * @param Block[] $blocks |
| 95 | * |
| 96 | * @return string[] |
| 97 | */ |
| 98 | private function getRobotPolicy( $action, Workflow $workflow, array $blocks ) { |
| 99 | if ( $action !== 'view' ) { |
| 100 | // consistent with 'edit' and other action pages in Core |
| 101 | return [ |
| 102 | 'index' => 'noindex', |
| 103 | 'follow' => 'nofollow', |
| 104 | ]; |
| 105 | } |
| 106 | |
| 107 | if ( $workflow->getType() === 'topic' ) { |
| 108 | /** @var TopicBlock $topic */ |
| 109 | $topic = $blocks[ 'topic' ]; |
| 110 | // @phan-suppress-next-line PhanUndeclaredMethod Cannot infer type |
| 111 | $topicRev = $topic->loadTopicTitle(); |
| 112 | if ( !$topicRev || $topicRev->isHidden() ) { |
| 113 | return [ |
| 114 | 'index' => 'noindex', |
| 115 | 'follow' => 'nofollow', |
| 116 | ]; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | $boardTitle = $workflow->getOwnerTitle(); |
| 121 | $article = Article::newFromTitle( $boardTitle, $this->getContext() ); |
| 122 | return $article->getRobotPolicy( $action ); |
| 123 | } |
| 124 | |
| 125 | protected function addModules( OutputPage $out, $action ) { |
| 126 | if ( $this->actions->hasValue( $action, 'modules' ) ) { |
| 127 | $out->addModules( $this->actions->getValue( $action, 'modules' ) ); |
| 128 | } else { |
| 129 | $out->addModules( [ 'ext.flow' ] ); |
| 130 | } |
| 131 | |
| 132 | if ( $this->actions->hasValue( $action, 'moduleStyles' ) ) { |
| 133 | $out->addModuleStyles( $this->actions->getValue( $action, 'moduleStyles' ) ); |
| 134 | } else { |
| 135 | $out->addModuleStyles( [ |
| 136 | 'mediawiki.ui', |
| 137 | 'mediawiki.ui.button', |
| 138 | 'mediawiki.ui.input', |
| 139 | 'mediawiki.ui.icon', |
| 140 | 'mediawiki.special.changeslist', |
| 141 | 'mediawiki.interface.helpers.styles', |
| 142 | 'mediawiki.editfont.styles', |
| 143 | 'ext.flow.styles.base', |
| 144 | 'ext.flow.mediawiki.ui.form', |
| 145 | 'oojs-ui.styles.icons-alerts', |
| 146 | 'oojs-ui.styles.icons-content', |
| 147 | 'oojs-ui.styles.icons-layout', |
| 148 | 'oojs-ui.styles.icons-movement', |
| 149 | 'oojs-ui.styles.icons-indicators', |
| 150 | 'oojs-ui.styles.icons-interactions', |
| 151 | 'oojs-ui.styles.icons-editing-core', |
| 152 | 'oojs-ui.styles.icons-moderation', |
| 153 | ] ); |
| 154 | } |
| 155 | |
| 156 | // Add Parsoid modules if necessary |
| 157 | Conversion\Utils::onFlowAddModules( $out ); |
| 158 | // Allow other extensions to add modules |
| 159 | ( new HookRunner( MediaWikiServices::getInstance()->getHookContainer() ) )->onFlowAddModules( $out ); |
| 160 | } |
| 161 | |
| 162 | protected function handleSubmit( WorkflowLoader $loader, $action, array $parameters ) { |
| 163 | $this->getOutput()->disableClientCache(); |
| 164 | |
| 165 | $blocksToCommit = $loader->handleSubmit( $this, $action, $parameters ); |
| 166 | if ( !$blocksToCommit ) { |
| 167 | return false; |
| 168 | } |
| 169 | |
| 170 | if ( !$this->getUser()->matchEditToken( $this->getRequest()->getVal( 'wpEditToken' ) ) ) { |
| 171 | // this uses the above $blocksToCommit reference to only render the failed blocks |
| 172 | foreach ( $blocksToCommit as $block ) { |
| 173 | $block->addError( 'edit-token', $this->msg( 'sessionfailure' ) ); |
| 174 | } |
| 175 | return $blocksToCommit; |
| 176 | } |
| 177 | |
| 178 | $loader->commit( $blocksToCommit ); |
| 179 | return true; |
| 180 | } |
| 181 | |
| 182 | protected function buildApiResponse( WorkflowLoader $loader, array $blocks, $action, array $parameters ) { |
| 183 | $workflow = $loader->getWorkflow(); |
| 184 | $title = $workflow->getArticleTitle(); |
| 185 | $user = $this->getUser(); |
| 186 | $categories = array_keys( $title->getParentCategories() ); |
| 187 | $categoryObject = []; |
| 188 | $linkedCategories = []; |
| 189 | |
| 190 | // Transform the raw category names into links |
| 191 | foreach ( $categories as $value ) { |
| 192 | $categoryTitle = Title::newFromText( $value ); |
| 193 | $categoryObject[ $value ] = [ |
| 194 | 'name' => $value, |
| 195 | 'exists' => $categoryTitle->exists() |
| 196 | ]; |
| 197 | $linkedCategories[] = MediaWikiServices::getInstance()->getLinkRenderer()->makeLink( |
| 198 | $categoryTitle, |
| 199 | $categoryTitle->getText() |
| 200 | ); |
| 201 | } |
| 202 | |
| 203 | // @todo This and API should use same code |
| 204 | $apiResponse = [ |
| 205 | 'title' => $title->getPrefixedText(), |
| 206 | 'categories' => $categoryObject, |
| 207 | // We need to store the link to the Special:Categories page from the |
| 208 | // back end php script, because there is no way in JS front end to |
| 209 | // get the localized link of a special page |
| 210 | 'specialCategoryLink' => SpecialPage::getTitleFor( 'Categories' )->getLocalURL(), |
| 211 | 'workflow' => $workflow->isNew() ? '' : $workflow->getId()->getAlphadecimal(), |
| 212 | 'blocks' => [], |
| 213 | // see https://phabricator.wikimedia.org/T223165 |
| 214 | 'isWatched' => MediaWikiServices::getInstance()->getWatchlistManager()->isWatched( $user, $title ), |
| 215 | 'watchable' => $user->isRegistered(), |
| 216 | 'links' => [ |
| 217 | 'watch-board' => [ |
| 218 | 'url' => $title->getLocalURL( 'action=watch' ), |
| 219 | ], |
| 220 | 'unwatch-board' => [ |
| 221 | 'url' => $title->getLocalURL( 'action=unwatch' ), |
| 222 | ], |
| 223 | ] |
| 224 | ]; |
| 225 | |
| 226 | $editToken = $user->getEditToken(); |
| 227 | $userOptionsLookup = MediaWikiServices::getInstance()->getUserOptionsLookup(); |
| 228 | $editFont = $userOptionsLookup->getOption( $user, 'editfont' ); |
| 229 | $wasPosted = $this->getRequest()->wasPosted(); |
| 230 | $topicListBlock = null; |
| 231 | foreach ( $blocks as $block ) { |
| 232 | if ( $wasPosted ? $block->canSubmit( $action ) : $block->canRender( $action ) ) { |
| 233 | $apiResponse['blocks'][$block->getName()] = $block->renderApi( $parameters[$block->getName()] ) |
| 234 | + [ |
| 235 | 'title' => $apiResponse['title'], |
| 236 | 'block-action-template' => $block->getTemplate( $action ), |
| 237 | 'editToken' => $editToken, |
| 238 | 'editFont' => $editFont, |
| 239 | ]; |
| 240 | if ( $block->getName() == 'topiclist' ) { |
| 241 | $topicListBlock = $block; |
| 242 | } |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | // Add category items to the header if they exist |
| 247 | if ( count( $linkedCategories ) > 0 && isset( $apiResponse['blocks']['header'] ) ) { |
| 248 | $apiResponse['blocks']['header']['categories'] = [ |
| 249 | 'link' => MediaWikiServices::getInstance()->getLinkRenderer()->makeLink( |
| 250 | SpecialPage::getTitleFor( 'Categories' ), |
| 251 | $this->msg( 'pagecategories' )->params( count( $linkedCategories ) )->text() |
| 252 | ) . $this->msg( 'colon-separator' )->escaped(), |
| 253 | 'items' => $linkedCategories |
| 254 | ]; |
| 255 | } |
| 256 | |
| 257 | if ( isset( $topicListBlock ) && isset( $parameters['topiclist'] ) ) { |
| 258 | $apiResponse['toc'] = $topicListBlock->renderTocApi( |
| 259 | // @phan-suppress-next-line PhanTypeArraySuspiciousNullable,PhanTypePossiblyInvalidDimOffset |
| 260 | $apiResponse['blocks']['topiclist'], |
| 261 | $parameters['topiclist'] |
| 262 | ); |
| 263 | } |
| 264 | |
| 265 | // @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset |
| 266 | if ( count( $apiResponse['blocks'] ) === 0 ) { |
| 267 | throw new InvalidActionException( "No blocks accepted action: $action", 'invalid-action' ); |
| 268 | } |
| 269 | |
| 270 | array_walk_recursive( $apiResponse, static function ( &$value ) { |
| 271 | if ( $value instanceof Anchor ) { |
| 272 | $anchor = $value; |
| 273 | $value = $value->toArray(); |
| 274 | |
| 275 | // TODO: We're looking into another approach for this |
| 276 | // using a parser function, so the URL doesn't have to be |
| 277 | // fully qualified. |
| 278 | // See https://bugzilla.wikimedia.org/show_bug.cgi?id=66746 |
| 279 | $value['url'] = $anchor->getFullURL(); |
| 280 | |
| 281 | } elseif ( $value instanceof Message ) { |
| 282 | $value = $value->text(); |
| 283 | } elseif ( $value instanceof UUID ) { |
| 284 | $value = $value->getAlphadecimal(); |
| 285 | } |
| 286 | } ); |
| 287 | |
| 288 | return $apiResponse; |
| 289 | } |
| 290 | |
| 291 | protected function renderApiResponse( array $apiResponse, array $robotPolicy ) { |
| 292 | // Render the flow-component wrapper |
| 293 | if ( empty( $apiResponse['blocks'] ) ) { |
| 294 | return []; |
| 295 | } |
| 296 | |
| 297 | $out = $this->getOutput(); |
| 298 | $config = $this->getConfig(); |
| 299 | |
| 300 | $jsonBlobResponse = $apiResponse; |
| 301 | |
| 302 | // Temporary fix for T107170 |
| 303 | array_walk_recursive( $jsonBlobResponse, static function ( &$value, $key ) { |
| 304 | if ( stristr( $key, 'Token' ) !== false ) { |
| 305 | $value = null; |
| 306 | } |
| 307 | } ); |
| 308 | |
| 309 | // Add JSON blob for OOUI widgets |
| 310 | $out->addJsConfigVars( 'wgFlowData', $jsonBlobResponse ); |
| 311 | $out->addJsConfigVars( 'wgEditSubmitButtonLabelPublish', |
| 312 | $config->get( 'EditSubmitButtonLabelPublish' ) ); |
| 313 | |
| 314 | $renderedBlocks = []; |
| 315 | foreach ( $apiResponse['blocks'] as $block ) { |
| 316 | // @todo find a better way to do this; potentially make all blocks their own components |
| 317 | switch ( $block['type'] ) { |
| 318 | case 'board-history': |
| 319 | $flowComponent = 'boardHistory'; |
| 320 | $page = 'history'; |
| 321 | break; |
| 322 | case 'topic': |
| 323 | if ( $block['submitted']['action'] === 'history' ) { |
| 324 | $page = 'history'; |
| 325 | $flowComponent = 'boardHistory'; |
| 326 | } else { |
| 327 | $page = 'topic'; |
| 328 | $flowComponent = 'board'; |
| 329 | } |
| 330 | break; |
| 331 | default: |
| 332 | $flowComponent = 'board'; |
| 333 | $page = 'board'; |
| 334 | } |
| 335 | |
| 336 | if ( isset( $block['errors'] ) ) { |
| 337 | foreach ( $block['errors'] as $error ) { |
| 338 | if ( isset( $error['extra']['details'] ) && |
| 339 | $error['extra']['details'] instanceof HtmlRenderingInformation |
| 340 | ) { |
| 341 | $renderingInfo = $error['extra']['details']; |
| 342 | |
| 343 | $out->addHeadItems( $renderingInfo->getHeadItems() ); |
| 344 | $out->addModuleStyles( $renderingInfo->getModuleStyles() ); |
| 345 | $out->addModules( $renderingInfo->getModules() ); |
| 346 | } |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | // Don't re-render a block type twice in one page |
| 351 | if ( isset( $renderedBlocks[$flowComponent] ) ) { |
| 352 | continue; |
| 353 | } |
| 354 | $renderedBlocks[$flowComponent] = true; |
| 355 | |
| 356 | // Get the block loop template |
| 357 | $template = $this->lightncandy->getTemplate( 'flow_block_loop' ); |
| 358 | |
| 359 | $classes = [ 'flow-component', "flow-$page-page" ]; |
| 360 | |
| 361 | // Always add mw-content-{ltr,rtl} class |
| 362 | $title = Title::newFromText( $apiResponse['title'] ); |
| 363 | $classes[] = 'mw-content-' . $title->getPageLanguage()->getDir(); |
| 364 | |
| 365 | $action = $this->getRequest()->getVal( 'action', 'view' ); |
| 366 | $classes[] = "flow-action-$action"; |
| 367 | |
| 368 | // Output the component, with the rendered blocks inside it |
| 369 | $out->addHTML( Html::rawElement( |
| 370 | 'div', |
| 371 | [ |
| 372 | 'class' => implode( ' ', $classes ), |
| 373 | 'data-flow-component' => $flowComponent, |
| 374 | 'data-flow-id' => $apiResponse['workflow'], |
| 375 | ], |
| 376 | $template( $apiResponse ) |
| 377 | ) ); |
| 378 | $out->setIndexPolicy( $robotPolicy[ 'index' ] ); |
| 379 | $out->setFollowPolicy( $robotPolicy[ 'follow' ] ); |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | protected function redirect( Workflow $workflow ) { |
| 384 | $link = $this->urlGenerator->workflowLink( |
| 385 | $workflow->getArticleTitle(), |
| 386 | $workflow->getId() |
| 387 | ); |
| 388 | $this->getOutput()->redirect( $link->getFullURL() ); |
| 389 | } |
| 390 | |
| 391 | /** |
| 392 | * Helper function extracts parameters from a WebRequest. |
| 393 | * |
| 394 | * @param string $action |
| 395 | * @param AbstractBlock[] $blocks |
| 396 | * @return array |
| 397 | */ |
| 398 | public function extractBlockParameters( $action, array $blocks ) { |
| 399 | $request = $this->getRequest(); |
| 400 | $result = []; |
| 401 | // BC for old parameters enclosed in square brackets |
| 402 | foreach ( $blocks as $block ) { |
| 403 | $name = $block->getName(); |
| 404 | $result[$name] = $request->getArray( $name, [] ); |
| 405 | } |
| 406 | // BC for topic_list renamed to topiclist |
| 407 | if ( isset( $result['topiclist'] ) && !$result['topiclist'] ) { |
| 408 | $result['topiclist'] = $request->getArray( 'topic_list', [] ); |
| 409 | } |
| 410 | $globalData = [ 'action' => $action ]; |
| 411 | foreach ( $request->getValues() as $name => $value ) { |
| 412 | // between urls only allowing [-_.] as unencoded special chars and |
| 413 | // php mangling all of those into '_', we have to split on '_' |
| 414 | if ( strpos( $name, '_' ) !== false ) { |
| 415 | [ $block, $var ] = explode( '_', $name, 2 ); |
| 416 | // flow_xxx is global data for all blocks |
| 417 | if ( $block === 'flow' ) { |
| 418 | $globalData[$var] = $value; |
| 419 | } else { |
| 420 | $result[$block][$var] = $value; |
| 421 | } |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | foreach ( $blocks as $block ) { |
| 426 | $result[$block->getName()] += $globalData; |
| 427 | } |
| 428 | |
| 429 | return $result; |
| 430 | } |
| 431 | } |