mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Gadgets
synced 2024-11-15 19:39:33 +00:00
733 lines
18 KiB
PHP
733 lines
18 KiB
PHP
<?php
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/**
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* Gadgets extension - lets users select custom javascript gadgets
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*
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* For more info see http://mediawiki.org/wiki/Extension:Gadgets
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*
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* @file
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* @ingroup Extensions
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* @author Daniel Kinzler, brightbyte.de
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* @copyright © 2007 Daniel Kinzler
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* @license GNU General Public Licence 2.0 or later
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*/
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class GadgetHooks extends OutputPage {
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/**
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* ArticleSaveComplete hook handler.
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*
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* @param $article Article
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* @param $user User
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* @param $text String: New page text
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*/
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public static function articleSaveComplete( $article, $user, $text ) {
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// update cache if MediaWiki:Gadgets-definition was edited
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$title = $article->mTitle;
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if ( $title->getNamespace() == NS_MEDIAWIKI && $title->getText() == 'Gadgets-definition' ) {
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Gadget::loadStructuredList( $text );
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}
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return true;
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}
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/**
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* UserGetDefaultOptions hook handler
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* @param $defaultOptions Array of default preference keys and values
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*/
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public static function userGetDefaultOptions( &$defaultOptions ) {
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$gadgets = Gadget::loadStructuredList();
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if ( !$gadgets ) return true;
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foreach ( $gadgets as $section => $thisSection ) {
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foreach ( $thisSection as $gadgetId => $gadget ) {
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if ( $gadget->isOnByDefault() ) {
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$defaultOptions['gadget-' . $gadgetId] = 1;
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}
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}
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}
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return true;
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}
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/**
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* GetPreferences hook handler.
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* @param $user User
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* @param $preferences Array: Preference descriptions
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*/
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public static function getPreferences( $user, &$preferences ) {
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$gadgets = Gadget::loadStructuredList();
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if ( !$gadgets ) {
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return true;
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}
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$options = array();
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$default = array();
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foreach ( $gadgets as $section => $thisSection ) {
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$available = array();
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foreach ( $thisSection as $gadget ) {
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if ( $gadget->isAllowed( $user ) ) {
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$gname = $gadget->getName();
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# bug 30182: dir="auto" because it's often not translated
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$desc = '<span dir="auto">' . $gadget->getDescription() . '</span>';
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$available[$desc] = $gname;
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if ( $gadget->isEnabled( $user ) ) {
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$default[] = $gname;
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}
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}
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}
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if ( $section !== '' ) {
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$section = wfMsgExt( "gadget-section-$section", 'parseinline' );
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if ( count ( $available ) ) {
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$options[$section] = $available;
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}
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} else {
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$options = array_merge( $options, $available );
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}
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}
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$preferences['gadgets-intro'] =
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array(
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'type' => 'info',
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'label' => ' ',
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'default' => Xml::tags( 'tr', array(),
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Xml::tags( 'td', array( 'colspan' => 2 ),
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wfMsgExt( 'gadgets-prefstext', 'parse' ) ) ),
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'section' => 'gadgets',
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'raw' => 1,
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'rawrow' => 1,
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);
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$preferences['gadgets'] =
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array(
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'type' => 'multiselect',
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'options' => $options,
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'section' => 'gadgets',
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'label' => ' ',
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'prefix' => 'gadget-',
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'default' => $default,
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);
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return true;
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}
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/**
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* ResourceLoaderRegisterModules hook handler.
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* @param $resourceLoader ResourceLoader
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*/
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public static function registerModules( &$resourceLoader ) {
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$gadgets = Gadget::loadList();
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if ( !$gadgets ) {
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return true;
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}
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foreach ( $gadgets as $g ) {
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$module = $g->getModule();
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$scriptsModule = $g->getScriptsModule();
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$stylesModule = $g->getStylesModule();
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if ( $module ) {
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$resourceLoader->register( $g->getModuleName(), $module );
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}
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if ( $scriptsModule ) {
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$resourceLoader->register( $g->getScriptsModuleName(), $scriptsModule );
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}
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if ( $stylesModule ) {
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$resourceLoader->register( $g->getStylesModuleName(), $stylesModule );
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}
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}
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return true;
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}
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/**
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* BeforePageDisplay hook handler.
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* @param $out OutputPage
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*/
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public static function beforePageDisplay( $out ) {
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global $wgUser;
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wfProfileIn( __METHOD__ );
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$gadgets = Gadget::loadList();
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if ( !$gadgets ) {
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wfProfileOut( __METHOD__ );
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return true;
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}
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$lb = new LinkBatch();
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$lb->setCaller( __METHOD__ );
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$pages = array();
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$stylesModules = array();
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foreach ( $gadgets as $gadget ) {
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if ( $gadget->isEnabled( $wgUser ) && $gadget->isAllowed( $wgUser ) ) {
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if ( $gadget->hasModule() ) {
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$out->addModules( $gadget->getModuleName() );
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}
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if ( $gadget->hasStylesModule() ) {
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$stylesModules[] = $gadget->getStylesModuleName();
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}
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foreach ( $gadget->getLegacyScripts() as $page ) {
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$lb->add( NS_MEDIAWIKI, $page );
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$pages[] = $page;
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}
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}
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}
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if ( count( $stylesModules ) ) {
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$out->addHeadItem( 'ext.gadget', $out->makeResourceLoaderLink(
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$stylesModules, ResourceLoaderModule::TYPE_STYLES
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) . Html::inlineScript(
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ResourceLoader::makeLoaderConditionalScript(
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ResourceLoader::makeLoaderStateScript(
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array_fill_keys( $stylesModules, 'ready' )
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)
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)
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) );
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}
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$lb->execute( __METHOD__ );
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$done = array();
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foreach ( $pages as $page ) {
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if ( isset( $done[$page] ) ) {
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continue;
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}
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$done[$page] = true;
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self::applyScript( $page, $out );
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}
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wfProfileOut( __METHOD__ );
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return true;
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}
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/**
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* Adds one legacy script to output.
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*
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* @param $page String: Unprefixed page title
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* @param $out OutputPage
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*/
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private static function applyScript( $page, $out ) {
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global $wgJsMimeType;
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# bug 22929: disable gadgets on sensitive pages. Scripts loaded through the
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# ResourceLoader handle this in OutputPage::getModules()
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# TODO: make this extension load everything via RL, then we don't need to worry
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# about any of this.
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if ( $out->getAllowedModules( ResourceLoaderModule::TYPE_SCRIPTS ) < ResourceLoaderModule::ORIGIN_USER_SITEWIDE ) {
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return;
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}
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$t = Title::makeTitleSafe( NS_MEDIAWIKI, $page );
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if ( !$t ) {
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return;
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}
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$u = $t->getLocalURL( 'action=raw&ctype=' . $wgJsMimeType );
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$out->addScriptFile( $u, $t->getLatestRevID() );
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}
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/**
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* UnitTestsList hook handler
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* @param $files Array: List of extension test files
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*/
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public static function unitTestsList( $files ) {
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$files[] = dirname( __FILE__ ) . '/Gadgets_tests.php';
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return true;
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}
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}
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/**
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* Wrapper for one gadget.
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*/
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class Gadget {
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/**
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* Increment this when changing class structure
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*/
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const GADGET_CLASS_VERSION = 6;
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private $version = self::GADGET_CLASS_VERSION,
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$scripts = array(),
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$styles = array(),
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$dependencies = array(),
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$name,
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$definition,
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$resourceLoaded = false,
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$requiredRights = array(),
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$requiredSkins = array(),
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$onByDefault = false,
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$category;
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/**
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* Creates an instance of this class from definition in MediaWiki:Gadgets-definition
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* @param $definition String: Gadget definition
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* @return Mixed: Instance of Gadget class or false if $definition is invalid
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*/
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public static function newFromDefinition( $definition ) {
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$m = array();
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if ( !preg_match( '/^\*+ *([a-zA-Z](?:[-_:.\w\d ]*[a-zA-Z0-9])?)(\s*\[.*?\])?\s*((\|[^|]*)+)\s*$/', $definition, $m ) ) {
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return false;
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}
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// NOTE: the gadget name is used as part of the name of a form field,
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// and must follow the rules defined in http://www.w3.org/TR/html4/types.html#type-cdata
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// Also, title-normalization applies.
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$gadget = new Gadget();
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$gadget->name = trim( str_replace( ' ', '_', $m[1] ) );
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$gadget->definition = $definition;
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$options = trim( $m[2], ' []' );
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foreach ( preg_split( '/\s*\|\s*/', $options, -1, PREG_SPLIT_NO_EMPTY ) as $option ) {
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$arr = preg_split( '/\s*=\s*/', $option, 2 );
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$option = $arr[0];
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if ( isset( $arr[1] ) ) {
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$params = explode( ',', $arr[1] );
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$params = array_map( 'trim', $params );
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} else {
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$params = array();
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}
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switch ( $option ) {
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case 'ResourceLoader':
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$gadget->resourceLoaded = true;
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break;
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case 'dependencies':
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$gadget->dependencies = $params;
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break;
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case 'rights':
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$gadget->requiredRights = $params;
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break;
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case 'skins':
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$gadget->requiredSkins = array_intersect( array_keys( Skin::getSkinNames() ), $params );
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break;
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case 'default':
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$gadget->onByDefault = true;
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break;
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}
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}
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foreach ( preg_split( '/\s*\|\s*/', $m[3], -1, PREG_SPLIT_NO_EMPTY ) as $page ) {
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$page = "Gadget-$page";
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if ( preg_match( '/\.js/', $page ) ) {
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$gadget->scripts[] = $page;
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} elseif ( preg_match( '/\.css/', $page ) ) {
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$gadget->styles[] = $page;
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}
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}
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return $gadget;
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}
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/**
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* @return String: Gadget name
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*/
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public function getName() {
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return $this->name;
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}
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/**
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* @return String: Gadget description parsed into HTML
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*/
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public function getDescription() {
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return wfMessage( "gadget-{$this->getName()}" )->parse();
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}
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/**
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* @return String: Wikitext of gadget description
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*/
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public function getRawDescription() {
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return wfMessage( "gadget-{$this->getName()}" )->plain();
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}
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/**
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* @return String: Name of category (aka section) our gadget belongs to. Empty string if none.
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*/
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public function getCategory() {
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return $this->category;
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}
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/**
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* @return String: Name of meta ResourceLoader module for this gadget
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*/
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public function getModuleName() {
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return "ext.gadget.{$this->name}";
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}
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/**
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* @return String: Name of scripts ResourceLoader module for this gadget
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*/
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public function getScriptsModuleName() {
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return "ext.gadget.{$this->name}.scripts";
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}
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/**
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* @return String: Name of styles ResourceLoader module for this gadget
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*/
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public function getStylesModuleName() {
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return "ext.gadget.{$this->name}.styles";
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}
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/**
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* Checks whether this is an instance of an older version of this class deserialized from cache
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* @return Boolean
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*/
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public function isOutdated() {
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return $this->version != self::GADGET_CLASS_VERSION;
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}
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/**
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* Checks whether this gadget is enabled for given user
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*
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* @param $user User: user to check against
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* @return Boolean
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*/
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public function isEnabled( $user ) {
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return (bool)$user->getOption( "gadget-{$this->name}", $this->onByDefault );
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}
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/**
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* Checks whether given user has permissions to use this gadget
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*
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* @param $user User: user to check against
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* @return Boolean
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*/
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public function isAllowed( $user ) {
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return count( array_intersect( $this->requiredRights, $user->getRights() ) ) == count( $this->requiredRights )
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&& ( !count( $this->requiredSkins ) || in_array( $user->getOption( 'skin' ), $this->requiredSkins ) );
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}
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/**
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* @return Boolean: Whether this gadget is on by default for everyone (but can be disabled in preferences)
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*/
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public function isOnByDefault() {
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return $this->onByDefault;
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}
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/**
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* @return Boolean: Whether all of this gadget's JS components support ResourceLoader
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*/
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public function supportsResourceLoader() {
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return $this->resourceLoaded;
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}
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/**
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* @return Boolean: Whether this gadget has resources that can be loaded via ResourceLoader
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*/
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public function hasModule() {
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return $this->hasScriptsModule() || $this->hasStylesModule() || count( $this->dependencies );
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}
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/**
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* @return Boolean: Whether this gadget has scripts module to be loaded via ResourceLoader
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*/
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public function hasScriptsModule() {
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return $this->supportsResourceLoader() && ( count( $this->scripts ) > 0 );
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}
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/**
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* @return Boolean: Whether this gadget has styles module to be loaded via ResourceLoader
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*/
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public function hasStylesModule() {
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return count( $this->styles ) > 0;
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}
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/**
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* @return String: Definition for this gadget from MediaWiki:gadgets-definition
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*/
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public function getDefinition() {
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return $this->definition;
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}
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/**
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* @return Array: Array of pages with JS not prefixed with namespace
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*/
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public function getScripts() {
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return $this->scripts;
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}
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/**
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* @return Array: Array of pages with CSS not prefixed with namespace
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*/
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public function getStyles() {
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return $this->styles;
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}
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/**
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* @return Array: Array of all of this gadget's resources
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*/
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public function getScriptsAndStyles() {
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return array_merge( $this->scripts, $this->styles );
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}
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/**
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* Returns meta module for ResourceLoader, see getModuleName() for its name.
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* Meta module contains no real data to be loaded but has dependencies of
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* this gadget's scripts and styles module as well as other dependencies.
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* If our gadget has no scripts or styles or dependencies suitable for RL,
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* false will be returned.
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* @return Mixed: GadgetResourceLoaderModule or false
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*/
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public function getModule() {
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// Don't omit this. Styles module may be marked as ready with
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// mw.loader.state() without dependencies fully resolved.
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$dependencies = $this->dependencies;
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if ( $this->hasScriptsModule() ) {
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$dependencies[] = $this->getScriptsModuleName();
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}
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if ( $this->hasStylesModule() ) {
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$dependencies[] = $this->getStylesModuleName();
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}
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if ( !count( $dependencies ) ) {
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return false;
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}
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return new GadgetResourceLoaderModule( array(), $dependencies );
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}
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/**
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* Returns scripts module for ResourceLoader, see getScriptsModuleName()
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* for its name. This module contains all scripts in the gadget if this
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* gadget support ResourceLoader, or false if it doesn't, or there's no
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* script at all.
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* @return Mixed: GadgetResourceLoaderModule or false
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*/
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public function getScriptsModule() {
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$pages = array();
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if ( $this->supportsResourceLoader() ) {
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foreach ( $this->scripts as $script ) {
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$pages['MediaWiki:' . $script] = array( 'type' => 'script' );
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}
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}
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if ( !count( $pages ) ) {
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return false;
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}
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return new GadgetResourceLoaderModule( $pages, $this->dependencies );
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}
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/**
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* Returns styles module for ResourceLoader, see getStylesModuleName()
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* for its name. This module contains all styles in the gadget, or
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* false if there's no style.
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* @return Mixed: GadgetResourceLoaderModule or false
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*/
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public function getStylesModule() {
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$pages = array();
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foreach ( $this->styles as $style ) {
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$pages['MediaWiki:' . $style] = array( 'type' => 'style' );
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}
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if ( !count( $pages ) ) {
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return false;
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}
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return new GadgetResourceLoaderModule( $pages, $this->dependencies );
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}
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/**
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* Returns list of scripts that don't support ResourceLoader
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* @return Array
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*/
|
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public function getLegacyScripts() {
|
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if ( $this->supportsResourceLoader() ) {
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return array();
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}
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return $this->scripts;
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}
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/**
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* Returns names of resources this gadget depends on
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* @return Array
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*/
|
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public function getDependencies() {
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return $this->dependencies;
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}
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/**
|
|
* Returns array of permissions required by this gadget
|
|
* @return Array
|
|
*/
|
|
public function getRequiredRights() {
|
|
return $this->requiredRights;
|
|
}
|
|
|
|
/**
|
|
* Returns array of skins where this gadget works
|
|
* @return Array
|
|
*/
|
|
public function getRequiredSkins() {
|
|
return $this->requiredSkins;
|
|
}
|
|
|
|
/**
|
|
* Loads and returns a list of all gadgets
|
|
* @return Mixed: Array of gadgets or false
|
|
*/
|
|
public static function loadList() {
|
|
static $gadgets = null;
|
|
|
|
if ( $gadgets !== null ) {
|
|
return $gadgets;
|
|
}
|
|
|
|
wfProfileIn( __METHOD__ );
|
|
$struct = self::loadStructuredList();
|
|
|
|
if ( !$struct ) {
|
|
$gadgets = $struct;
|
|
wfProfileOut( __METHOD__ );
|
|
return $gadgets;
|
|
}
|
|
|
|
$gadgets = array();
|
|
foreach ( $struct as $section => $entries ) {
|
|
$gadgets = array_merge( $gadgets, $entries );
|
|
}
|
|
wfProfileOut( __METHOD__ );
|
|
|
|
return $gadgets;
|
|
}
|
|
|
|
/**
|
|
* Checks whether gadget list from cache can be used.
|
|
* @return Boolean
|
|
*/
|
|
private static function isValidList( $gadgets ) {
|
|
if ( !is_array( $gadgets ) ) return false;
|
|
// Check if we have 1) array of gadgets 2) the gadgets are up to date
|
|
// One check is enough
|
|
foreach ( $gadgets as $section => $list ) {
|
|
foreach ( $list as $g ) {
|
|
if ( !( $g instanceof Gadget ) || $g->isOutdated() ) {
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true; // empty array
|
|
}
|
|
|
|
/**
|
|
* Loads list of gadgets and returns it as associative array of sections with gadgets
|
|
* e.g. array( 'sectionnname1' => array( $gadget1, $gadget2),
|
|
* 'sectionnname2' => array( $gadget3 ) );
|
|
* @param $forceNewText String: New text of MediaWiki:gadgets-sdefinition. If specified, will
|
|
* force a purge of cache and recreation of the gadget list.
|
|
* @return Mixed: Array or false
|
|
*/
|
|
public static function loadStructuredList( $forceNewText = null ) {
|
|
global $wgMemc;
|
|
|
|
static $gadgets = null;
|
|
if ( $gadgets !== null && $forceNewText === null ) {
|
|
return $gadgets;
|
|
}
|
|
|
|
wfProfileIn( __METHOD__ );
|
|
$key = wfMemcKey( 'gadgets-definition', self::GADGET_CLASS_VERSION );
|
|
|
|
if ( $forceNewText === null ) {
|
|
// cached?
|
|
$gadgets = $wgMemc->get( $key );
|
|
if ( self::isValidList( $gadgets ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $gadgets;
|
|
}
|
|
|
|
$g = wfMessage( "gadgets-definition" )->inContentLanguage();
|
|
if ( !$g->exists() ) {
|
|
$gadgets = false;
|
|
wfProfileOut( __METHOD__ );
|
|
return $gadgets;
|
|
}
|
|
$g = $g->plain();
|
|
} else {
|
|
$g = $forceNewText;
|
|
}
|
|
|
|
$g = preg_replace( '/<!--.*-->/s', '', $g );
|
|
$g = preg_split( '/(\r\n|\r|\n)+/', $g );
|
|
|
|
$gadgets = array();
|
|
$section = '';
|
|
|
|
foreach ( $g as $line ) {
|
|
$m = array();
|
|
if ( preg_match( '/^==+ *([^*:\s|]+?)\s*==+\s*$/', $line, $m ) ) {
|
|
$section = $m[1];
|
|
}
|
|
else {
|
|
$gadget = self::newFromDefinition( $line );
|
|
if ( $gadget ) {
|
|
$gadgets[$section][$gadget->getName()] = $gadget;
|
|
$gadget->category = $section;
|
|
}
|
|
}
|
|
}
|
|
|
|
// cache for a while. gets purged automatically when MediaWiki:Gadgets-definition is edited
|
|
$wgMemc->set( $key, $gadgets, 60 * 60 * 24 );
|
|
$source = $forceNewText !== null ? 'input text' : 'MediaWiki:Gadgets-definition';
|
|
wfDebug( __METHOD__ . ": $source parsed, cache entry $key updated\n" );
|
|
wfProfileOut( __METHOD__ );
|
|
|
|
return $gadgets;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Class representing a list of resources for one gadget
|
|
*/
|
|
class GadgetResourceLoaderModule extends ResourceLoaderWikiModule {
|
|
private $pages, $dependencies;
|
|
|
|
/**
|
|
* Creates an instance of this class
|
|
* @param $pages Array: Associative array of pages in ResourceLoaderWikiModule-compatible
|
|
* format, for example:
|
|
* array(
|
|
* 'MediaWiki:Gadget-foo.js' => array( 'type' => 'script' ),
|
|
* 'MediaWiki:Gadget-foo.css' => array( 'type' => 'style' ),
|
|
* )
|
|
* @param $dependencies Array: Names of resources this module depends on
|
|
*/
|
|
public function __construct( $pages, $dependencies ) {
|
|
$this->pages = $pages;
|
|
$this->dependencies = $dependencies;
|
|
}
|
|
|
|
/**
|
|
* Overrides the abstract function from ResourceLoaderWikiModule class
|
|
* @return Array: $pages passed to __construct()
|
|
*/
|
|
protected function getPages( ResourceLoaderContext $context ) {
|
|
return $this->pages;
|
|
}
|
|
|
|
/**
|
|
* Overrides ResourceLoaderModule::getDependencies()
|
|
* @return Array: Names of resources this module depends on
|
|
*/
|
|
public function getDependencies() {
|
|
return $this->dependencies;
|
|
}
|
|
}
|