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<?php |
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/** |
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* Contains class holding and distributing information about all available components. |
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* |
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* @copyright (C) 2018, Tobias Oetterer, Paderborn University |
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* @license https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License, version 3 (or later) |
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* |
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* This file is part of the MediaWiki extension BootstrapComponents. |
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* The BootstrapComponents extension is free software: you can redistribute it |
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* and/or modify it under the terms of the GNU General Public License as published |
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* by the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* The BootstrapComponents extension is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <https://www.gnu.org/licenses/>. |
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* |
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* @file |
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* @ingroup BootstrapComponents |
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* @author Tobias Oetterer |
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*/ |
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namespace BootstrapComponents; |
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use \MediaWiki\MediaWikiServices; |
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use \MWException; |
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/** |
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* Class ComponentLibrary |
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* |
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* Holds information about all registered components |
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* |
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* @since 1.0 |
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*/ |
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class ComponentLibrary { |
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/** |
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* @var array |
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*/ |
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const DEFAULT_ATTRIBUTES = [ 'class', 'id', 'style' ]; |
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/** |
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* File, that holds the component definition list. |
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* |
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* @var string |
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*/ |
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const DEFINITIONS_FILE = __DIR__ . DIRECTORY_SEPARATOR . 'ComponentsDefinition.json'; |
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/** |
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* @var string |
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*/ |
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const HANDLER_TYPE_PARSER_FUNCTION = 'function'; |
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/** |
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* @var string |
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*/ |
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const HANDLER_TYPE_TAG_EXTENSION = 'tag'; |
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/** |
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* @var string |
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*/ |
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const PARSER_HOOK_PREFIX = 'bootstrap_'; |
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/** |
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* This array holds all the data for all known components, whether they are registered or not. |
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* |
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* Array has form |
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* <pre> |
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* "componentIdentifier" => [ |
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* "class" => <className>, |
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* "name" => <componentName> |
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* "handlerType" => <handlerType>, |
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* "attributes" => [ "attr1", "attr2", ... ], |
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* "aliases" => [ "alias" => "attribute", ... ] |
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* "modules" => [ |
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* "default" => [ "module1", "module2", ... ], |
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* "<skin>" => [ "module1", "module2", ... ], |
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* ] |
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* ] |
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* </pre> |
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* |
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* @var array $componentDataStore |
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*/ |
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private $componentDataStore; |
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/** |
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* The list of registered/allowed bootstrap components, name or alias |
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* |
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* @var string[] $registeredComponents |
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*/ |
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private $registeredComponents; |
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/** |
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* @param string $componentName |
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* |
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* @return string |
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*/ |
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public static function compileParserHookStringFor( $componentName ) { |
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return self::PARSER_HOOK_PREFIX . strtolower( $componentName ); |
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} |
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/** |
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* ComponentLibrary constructor. |
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* |
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* Do not instantiate directly, but use {@see ApplicationFactory::getComponentLibrary} instead. |
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* |
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* @param bool|array $componentWhiteList (see {@see \BootstrapComponents\ComponentLibrary::$componentWhiteList}) |
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* |
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* @throws \ConfigException cascading {@see \ConfigFactory::makeConfig} and |
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* @see ApplicationFactory::getComponentLibrary |
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* |
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*/ |
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public function __construct( $componentWhiteList = null ) { |
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if ( is_null( $componentWhiteList ) ) { |
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$myConfig = MediaWikiServices::getInstance()->getConfigFactory()->makeConfig( 'BootstrapComponents' ); |
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$componentWhiteList = $myConfig->has( 'BootstrapComponentsWhitelist' ) |
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? $myConfig->get( 'BootstrapComponentsWhitelist' ) |
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: true; |
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} |
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$componentWhiteList = $this->mangle( $componentWhiteList ); |
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$this->registeredComponents = $this->registerComponents( $componentWhiteList ); |
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} |
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/** |
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* Compiles an array for all bootstrap component parser functions to be uses in the BootstrapComponents.magic.php file. |
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* |
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* @return array |
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*/ |
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public function compileMagicWordsArray() { |
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$magicWords = []; |
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foreach ( $this->getRegisteredComponents() as $componentName ) { |
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if ( $this->isParserFunction( $componentName ) ) { |
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$magicWords[self::compileParserHookStringFor( $componentName )] |
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= [ 0, self::compileParserHookStringFor( $componentName ) ]; |
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} |
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1 |
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} |
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return $magicWords; |
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} |
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/** |
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* Checks, if component $componentIdentifier is registered |
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* |
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* @param string $componentIdentifier |
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* |
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* @return bool |
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*/ |
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public function isRegistered( $componentIdentifier ) { |
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return in_array( $componentIdentifier, $this->registeredComponents, true ); |
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} |
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/** |
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* Returns the defined/allowed attribute aliases for component/alias $componentIdentifier. |
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* |
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* @param string $componentIdentifier |
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* |
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* @return array |
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* @throws MWException provided component is not known |
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*/ |
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public function getAliasesFor( $componentIdentifier ) { |
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return $this->accessComponentDataStore( $componentIdentifier, 'aliases' ); |
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} |
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/** |
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* Returns the defined/allowed attributes for component/alias $componentIdentifier. |
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* |
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* @param string $componentIdentifier |
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* |
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* @return array |
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* @throws MWException provided component is not known |
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*/ |
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public function getAttributesFor( $componentIdentifier ) { |
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return $this->accessComponentDataStore( $componentIdentifier, 'attributes' ); |
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} |
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/** |
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* Returns class name for a registered component/alias. |
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* |
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* @param string $componentIdentifier |
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* |
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* @return string |
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*/ |
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public function getClassFor( $componentIdentifier ) { |
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return $this->accessComponentDataStore( $componentIdentifier, 'class' ); |
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} |
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/** |
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* Returns handler type for a registered component/alias. 'UNKNOWN' if unknown component. |
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* |
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* @param string $componentIdentifier |
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* |
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* @return string |
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* @see \BootstrapComponents\ComponentLibrary::HANDLER_TYPE_PARSER_FUNCTION, |
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* \BootstrapComponents\ComponentLibrary::HANDLER_TYPE_TAG_EXTENSION |
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* |
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*/ |
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public function getHandlerTypeFor( $componentIdentifier ) { |
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try { |
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return $this->accessComponentDataStore( $componentIdentifier, 'handlerType' ); |
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} catch ( MWException $e ) { |
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return 'UNKNOWN'; |
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} |
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} |
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/** |
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* Returns an array of all the known components' names, _excluding_ aliases, |
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* |
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* @return array |
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*/ |
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public function getKnownComponents() { |
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return array_keys( $this->getComponentDataStore() ); |
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} |
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/** |
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* Returns all the needed modules for a component/alias. False, if there are none. |
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* If skin is set, returns all modules especially registered for that skin as well |
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* |
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* @param string $componentIdentifier |
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* @param string $skin |
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* |
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* @return array |
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*/ |
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public function getModulesFor( $componentIdentifier, $skin = null ) { |
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$allModules = $this->accessComponentDataStore( $componentIdentifier, 'modules' ); |
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$modules = isset( $allModules['default'] ) |
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? (array) $allModules['default'] |
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: []; |
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if ( $skin === null || !isset( $allModules[$skin] ) ) { |
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return $modules; |
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} |
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return array_merge( |
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$modules, |
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(array) $allModules[$skin] |
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); |
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} |
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/** |
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* Returns the component name for a given class. |
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* |
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* @param string $componentClass |
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* |
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* @throws MWException if supplied class is not registered |
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* |
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* @return string |
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*/ |
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public function getNameFor( $componentClass ) { |
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$component = null; |
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// if $componentClass is not in values in $this->registeredComponentClasses, this has to fail |
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foreach ( $this->getComponentDataStore() as $componentIdentifier => $componentData ) { |
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if ( isset( $componentData['class'] ) && ( $componentData['class'] == $componentClass ) && isset( $componentData['name'] ) ) { |
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$component = $componentData['name']; |
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break; |
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} |
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} |
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if ( is_null( $component ) ) { |
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throw new MWException( 'Trying to get a component name for unregistered class "' . (string) $componentClass . '"!' ); |
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} |
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return $this->accessComponentDataStore( $component, 'name' ); |
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} |
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/** |
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* Returns an array of all the registered component's names. Including aliases. |
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* |
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* @return string[] |
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*/ |
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public function getRegisteredComponents() { |
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return $this->registeredComponents; |
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} |
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/** |
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* True, if referenced component is registered as parser function. |
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* |
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* @param string $componentName |
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* |
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* @return bool |
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*/ |
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public function isParserFunction( $componentName ) { |
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return $this->getHandlerTypeFor( $componentName ) == self::HANDLER_TYPE_PARSER_FUNCTION; |
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} |
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/** |
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* True, if referenced component is registered as tag extension. |
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* |
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* @param string $componentName |
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* |
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* @return bool |
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*/ |
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public function isTagExtension( $componentName ) { |
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return $this->getHandlerTypeFor( $componentName ) == self::HANDLER_TYPE_TAG_EXTENSION; |
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} |
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/** |
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* @param string $componentIdentifier |
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* @param string $field |
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* |
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* @throws MWException on non existing $componentIdentifier or $field |
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* @return mixed |
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*/ |
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protected function accessComponentDataStore( $componentIdentifier, $field ) { |
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if ( !isset( $this->getComponentDataStore()[$componentIdentifier][$field] ) ) { |
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throw new MWException( |
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'Trying to access undefined field \'' . $field . '\' of component \'' . $componentIdentifier . '\'. Aborting' |
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); |
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} |
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return $this->getComponentDataStore()[$componentIdentifier][$field]; |
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} |
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/** |
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* Sees to it, that the whitelist (if it is an array) contains only lowercase strings. |
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* |
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* @param bool|array $componentWhiteList |
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* |
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319
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* @return bool|array |
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320
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*/ |
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321
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private function mangle( $componentWhiteList ) { |
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322
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if ( !is_array( $componentWhiteList ) ) { |
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87 |
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return $componentWhiteList; |
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87 |
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} |
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87 |
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$newWhiteList = []; |
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326
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87 |
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foreach ( $componentWhiteList as $element ) { |
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87 |
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$newWhiteList[] = strtolower( trim( $element ) ); |
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} |
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329
|
87 |
|
return $newWhiteList; |
|
330
|
87 |
|
} |
|
331
|
|
|
|
|
332
|
87 |
|
/** |
|
333
|
|
|
* This adds the default attributes to the attribute list. |
|
334
|
4 |
|
* |
|
335
|
|
|
* @param array $componentAttributes |
|
336
|
|
|
* |
|
337
|
86 |
|
* @return array |
|
338
|
86 |
|
*/ |
|
339
|
87 |
|
private function normalizeAttributes( $componentAttributes ) { |
|
340
|
|
|
$componentAttributes = (array) $componentAttributes; |
|
341
|
87 |
|
$componentAttributes = array_unique( |
|
342
|
|
|
array_merge( |
|
343
|
|
|
$componentAttributes, |
|
344
|
|
|
self::DEFAULT_ATTRIBUTES |
|
345
|
|
|
) |
|
346
|
|
|
); |
|
347
|
|
|
return $componentAttributes; |
|
348
|
|
|
} |
|
349
|
87 |
|
|
|
350
|
|
|
/** |
|
351
|
|
|
* Generates the array for registered components containing all whitelisted component identifiers |
|
352
|
87 |
|
* |
|
353
|
87 |
|
* @param bool|array $componentWhiteList |
|
354
|
|
|
* |
|
355
|
87 |
|
* @return string[] list of registered component identifiers |
|
356
|
87 |
|
*/ |
|
357
|
87 |
|
private function registerComponents( $componentWhiteList ) { |
|
358
|
|
|
$registeredComponents = []; |
|
359
|
87 |
|
foreach ( $this->getKnownComponents() as $componentIdentifier ) { |
|
360
|
87 |
|
|
|
361
|
|
|
if ( !$componentWhiteList || (is_array( $componentWhiteList ) && !in_array( $componentIdentifier, $componentWhiteList )) ) { |
|
362
|
87 |
|
// if $componentWhiteList is false, or and array and does not contain the $componentIdentifier, we will not register it |
|
363
|
87 |
|
continue; |
|
364
|
87 |
|
} |
|
365
|
87 |
|
$registeredComponents[] = $componentIdentifier; |
|
366
|
|
|
} |
|
367
|
87 |
|
return $registeredComponents; |
|
368
|
87 |
|
} |
|
369
|
87 |
|
|
|
370
|
|
|
/** |
|
371
|
87 |
|
* Raw library data used in registration process. |
|
372
|
87 |
|
* |
|
373
|
|
|
* @return array |
|
374
|
87 |
|
*/ |
|
375
|
87 |
|
private function getComponentDataStore() { |
|
376
|
87 |
|
if ( !empty( $this->componentDataStore ) ) { |
|
377
|
|
|
return $this->componentDataStore; |
|
378
|
87 |
|
} |
|
379
|
87 |
|
$rawData = json_decode( file_get_contents( self::DEFINITIONS_FILE ), JSON_OBJECT_AS_ARRAY ); |
|
380
|
|
|
|
|
381
|
87 |
|
$componentAliases = []; |
|
382
|
87 |
|
$componentDataStore = []; |
|
383
|
87 |
|
foreach ( $rawData as $componentName => $componentData ) { |
|
384
|
87 |
|
|
|
385
|
87 |
|
if ( !is_array( $componentData ) ) { |
|
386
|
87 |
|
$componentAliases[$componentName] = trim( (string) $componentData ); |
|
387
|
87 |
|
continue; |
|
388
|
|
|
} |
|
389
|
87 |
|
|
|
390
|
87 |
|
$componentData['name'] = $componentName; |
|
391
|
87 |
|
$componentData['attributes'] = $this->normalizeAttributes( |
|
392
|
|
|
(isset( $componentData['attributes'] ) ? $componentData['attributes'] : []) |
|
393
|
87 |
|
); |
|
394
|
87 |
|
$componentData['aliases'] = isset( $componentData['aliases'] ) ? $componentData['aliases'] : []; |
|
395
|
|
|
$componentData['modules'] = isset( $componentData['modules'] ) ? $componentData['modules'] : []; |
|
396
|
87 |
|
$componentDataStore[$componentName] = $componentData; |
|
397
|
87 |
|
} |
|
398
|
|
|
|
|
399
|
87 |
|
foreach ( $componentAliases as $alias => $componentName ) { |
|
400
|
87 |
|
if ( isset( $componentDataStore[$componentName] ) ) { |
|
401
|
87 |
|
$componentDataStore[$alias] = $componentDataStore[$componentName]; |
|
402
|
|
|
} |
|
403
|
87 |
|
} |
|
404
|
87 |
|
|
|
405
|
|
|
return $this->componentDataStore = $componentDataStore; |
|
406
|
87 |
|
} |
|
407
|
|
|
} |
|
408
|
|
|
|