mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Gadgets
synced 2024-11-15 03:23:51 +00:00
501 lines
13 KiB
PHP
501 lines
13 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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*
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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 {
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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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* 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) return true;
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$options = array();
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foreach( $gadgets as $section => $thisSection ) {
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if ( $section !== '' ) {
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$section = wfMsgExt( "gadget-section-$section", 'parseinline' );
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$options[$section] = array();
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$destination = &$options[$section];
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} else {
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$destination = &$options;
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}
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foreach( $thisSection as $gadget ) {
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$gname = $gadget->getName();
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$destination[wfMsgExt( "gadget-$gname", 'parseinline' )] = $gname;
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}
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}
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$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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);
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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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if ( $module ) {
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$resourceLoader->register( $g->getModuleName(), $module );
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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 $wgUser;
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if ( !$wgUser->isLoggedIn() ) return true;
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wfProfileIn( __METHOD__ );
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//disable all gadgets on critical special pages
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//NOTE: $out->isUserJsAllowed() is tempting, but always fals if $wgAllowUserJs is false.
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// That would disable gadgets on wikis without user JS. Introducing $out->isJsAllowed()
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// may work, but should that really apply also to MediaWiki:common.js? Even on the preference page?
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// See bug 22929 for discussion.
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$title = $out->getTitle();
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if ( $title->isSpecial( 'Preferences' )
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|| $title->isSpecial( 'Resetpass' )
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|| $title->isSpecial( 'Userlogin' ) )
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{
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wfProfileOut( __METHOD__ );
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return true;
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}
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$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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foreach ( $gadgets as $gadget ) {
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if ( $gadget->isEnabled() ) {
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if ( $gadget->hasModule() ) {
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$out->addModules( $gadget->getModuleName() );
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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[] = $page;
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}
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}
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}
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$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] ) ) continue;
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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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//FIXME: stuff added via $out->addScript appears below usercss and userjs
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// but we'd want it to appear above explicit user stuff, so it can be overwritten.
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$t = Title::makeTitleSafe( NS_MEDIAWIKI, $page );
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if ( !$t ) return;
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$u = $t->getLocalURL( 'action=raw&ctype=' . $wgJsMimeType );
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//switched to addScriptFile call to support scriptLoader
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$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 = 2;
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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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/**
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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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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 = $definition;
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$params = trim( $m[2], ' []' );
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foreach ( preg_split( '/\s*\|\s*/', $params, -1, PREG_SPLIT_NO_EMPTY ) as $option ) {
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if ( $option == 'ResourceLoader' ) {
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$gadget->resourceLoaded = true;
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} elseif ( preg_match( '/dependencies\s*=/', $option ) ) {
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$option = preg_replace( '/dependencies\s*=\s*/', '', $option );
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$deps = preg_split( '/\s*,\s*/', $option, -1, PREG_SPLIT_NO_EMPTY );
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if ( $deps ) {
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$gadget->dependencies = $deps;
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}
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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 $this->name;
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}
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/**
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* @return String: Name of ResourceLoader module for this gadget
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*/
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public function getModuleName() {
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return "ext.gadget.{$this->name}";
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}
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/**
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* 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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* @return Boolean: Whether this gadget is enabled for current user
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*/
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public function isEnabled() {
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global $wgUser;
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return (bool)$wgUser->getOption( "gadget-{$this->name}" );
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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 count( $this->styles )
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+ ( $this->supportsResourceLoader() ? count( $this->scripts ) : 0 )
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> 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, $this->styles );
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}
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/**
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* Returns module for ResourceLoader, see getModuleName() for its name.
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* If our gadget has no scripts or styles suitable for RL, false will be returned.
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* @return Mixed: GadgetResourceLoaderModule or false
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*/
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public function getModule() {
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$pages = array();
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foreach( $this->styles as $style ) {
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$pages[$style] = array( 'ns' => NS_MEDIAWIKI, 'type' => 'style' );
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}
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if ( $this->supportsResourceLoader() ) {
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foreach ( $this->scripts as $script ) {
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$pages[$script] = array( 'ns' => NS_MEDIAWIKI, 'type' => 'script' );
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}
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}
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if ( !count( $pages ) ) {
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return null;
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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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/**
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* Loads and returns a list of all gadgets
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* @return Mixed: Array of gadgets or false
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*/
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public static function loadList() {
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static $gadgets = null;
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if ( $gadgets !== null ) return $gadgets;
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wfProfileIn( __METHOD__ );
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$struct = self::loadStructuredList();
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if ( !$struct ) {
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$gadgets = $struct;
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return $gadgets;
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}
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$gadgets = array();
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foreach ( $struct as $section => $entries ) {
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$gadgets = array_merge( $gadgets, $entries );
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}
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wfProfileOut( __METHOD__ );
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return $gadgets;
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}
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/**
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* Checks whether gadget list from cache can be used.
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* @return Boolean
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*/
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private static function isValidList( $gadgets ) {
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if ( !is_array( $gadgets ) ) return false;
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// Check if we have 1) array of gadgets 2) the gadgets are up to date
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// One check is enough
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foreach ( $gadgets as $section => $list ) {
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foreach ( $list as $g ) {
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if ( !( $g instanceof Gadget ) || $g->isOutdated() ) {
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return false;
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} else {
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return true;
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}
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}
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}
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return true; // empty array
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}
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/**
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* Loads list of gadgets and returns it as associative array of sections with gadgets
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* e.g. array( 'sectionnname1' => array( $gadget1, $gadget2),
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* 'sectionnname2' => array( $gadget3 ) );
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* @param $forceNewText String: New text of MediaWiki:gadgets-sdefinition. If specified, will
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* force a purge of cache and recreation of the gadget list.
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* @return Mixed: Array or false
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*/
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public static function loadStructuredList( $forceNewText = null ) {
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global $wgMemc;
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static $gadgets = null;
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if ( $gadgets !== null && $forceNewText === null ) return $gadgets;
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wfProfileIn( __METHOD__ );
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$key = wfMemcKey( 'gadgets-definition' );
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if ( $forceNewText === null ) {
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//cached?
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$gadgets = $wgMemc->get( $key );
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if ( self::isValidList( $gadgets ) ) {
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wfProfileOut( __METHOD__ );
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return $gadgets;
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}
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$g = wfMsgForContentNoTrans( "gadgets-definition" );
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if ( wfEmptyMsg( "gadgets-definition", $g ) ) {
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$gadgets = false;
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wfProfileOut( __METHOD__ );
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return $gadgets;
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}
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} else {
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$g = $forceNewText;
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}
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$g = preg_replace( '/<!--.*-->/s', '', $g );
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$g = preg_split( '/(\r\n|\r|\n)+/', $g );
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$gadgets = array();
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$section = '';
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foreach ( $g as $line ) {
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if ( preg_match( '/^==+ *([^*:\s|]+?)\s*==+\s*$/', $line, $m ) ) {
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$section = $m[1];
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}
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else {
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$gadget = self::newFromDefinition( $line );
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if ( $gadget ) {
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$gadgets[$section][$gadget->getName()] = $gadget;
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}
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}
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}
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//cache for a while. gets purged automatically when MediaWiki:Gadgets-definition is edited
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$wgMemc->set( $key, $gadgets, 60*60*24 );
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$source = $forceNewText !== null ? 'input text' : 'MediaWiki:Gadgets-definition';
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wfDebug( __METHOD__ . ": $source parsed, cache entry $key updated\n");
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wfProfileOut( __METHOD__ );
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return $gadgets;
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}
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}
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/**
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* Class representing a list of resources for one gadget
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*/
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class GadgetResourceLoaderModule extends ResourceLoaderWikiModule {
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private $pages, $dependencies;
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/**
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* Creates an instance of this class
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* @param $pages Array: Associative array of pages in ResourceLoaderWikiModule-compatible
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* format, for example:
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* array(
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* 'Gadget-foo.js' => array( 'ns' => NS_MEDIAWIKI, 'type' => 'script' ),
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* 'Gadget-foo.css' => array( 'ns' => NS_MEDIAWIKI, 'type' => 'style' ),
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* )
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* @param $dependencies Array: Names of resources this module depends on
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*/
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public function __construct( $pages, $dependencies ) {
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$this->pages = $pages;
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$this->dependencies = $dependencies;
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}
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/**
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* Overrides the abstract function from ResourceLoaderWikiModule class
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* @return Array: $pages passed to __construct()
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*/
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protected function getPages( ResourceLoaderContext $context ) {
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return $this->pages;
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}
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/**
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* Overrides ResourceLoaderModule::getDependencies()
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* @return Array: Names of resources this module depends on
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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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} |