includes/resourceloader/ResourceLoaderStartUpModule.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  * @author Trevor Parscal
  20  * @author Roan Kattouw
  21  */
  22
  23 class ResourceLoaderStartUpModule extends ResourceLoaderModule {
  24
  25         /* Protected Members */
  26
  27         protected $modifiedTime = array();
  28
  29         /* Protected Methods */
  30
  31         protected function getConfig( $context ) {
  32                 global $wgLoadScript, $wgScript, $wgStylePath, $wgScriptExtension,
  33                         $wgArticlePath, $wgScriptPath, $wgServer, $wgContLang, $wgBreakFrames,
  34                         $wgVariantArticlePath, $wgActionPaths, $wgUseAjax, $wgVersion,
  35                         $wgEnableAPI, $wgEnableWriteAPI, $wgDBname, $wgEnableMWSuggest,
  36                         $wgSitename, $wgFileExtensions;
  37
  38                 // Pre-process information
  39                 $separatorTransTable = $wgContLang->separatorTransformTable();
  40                 $separatorTransTable = $separatorTransTable ? $separatorTransTable : array();
  41                 $compactSeparatorTransTable = array(
  42                         implode( "\t", array_keys( $separatorTransTable ) ),
  43                         implode( "\t", $separatorTransTable ),
  44                 );
  45                 $digitTransTable = $wgContLang->digitTransformTable();
  46                 $digitTransTable = $digitTransTable ? $digitTransTable : array();
  47                 $compactDigitTransTable = array(
  48                         implode( "\t", array_keys( $digitTransTable ) ),
  49                         implode( "\t", $digitTransTable ),
  50                 );
  51                 $mainPage = Title::newMainPage();
  52
  53                 // Build list of variables
  54                 $vars = array(
  55                         'wgLoadScript' => $wgLoadScript,
  56                         'debug' => $context->getDebug(),
  57                         'skin' => $context->getSkin(),
  58                         'stylepath' => $wgStylePath,
  59                         'wgUrlProtocols' => wfUrlProtocols(),
  60                         'wgArticlePath' => $wgArticlePath,
  61                         'wgScriptPath' => $wgScriptPath,
  62                         'wgScriptExtension' => $wgScriptExtension,
  63                         'wgScript' => $wgScript,
  64                         'wgVariantArticlePath' => $wgVariantArticlePath,
  65                         'wgActionPaths' => $wgActionPaths,
  66                         'wgServer' => $wgServer,
  67                         'wgUserLanguage' => $context->getLanguage(),
  68                         'wgContentLanguage' => $wgContLang->getCode(),
  69                         'wgBreakFrames' => $wgBreakFrames,
  70                         'wgVersion' => $wgVersion,
  71                         'wgEnableAPI' => $wgEnableAPI,
  72                         'wgEnableWriteAPI' => $wgEnableWriteAPI,
  73                         'wgSeparatorTransformTable' => $compactSeparatorTransTable,
  74                         'wgDigitTransformTable' => $compactDigitTransTable,
  75                         'wgMainPageTitle' => $mainPage ? $mainPage->getPrefixedText() : null,
  76                         'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
  77                         'wgNamespaceIds' => $wgContLang->getNamespaceIds(),
  78                         'wgSiteName' => $wgSitename,
  79                         'wgFileExtensions' => $wgFileExtensions,
  80                         'wgDBname' => $wgDBname,
  81                 );
  82                 if ( $wgContLang->hasVariants() ) {
  83                         $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
  84                 }
  85                 if ( $wgUseAjax && $wgEnableMWSuggest ) {
  86                         $vars['wgMWSuggestTemplate'] = SearchEngine::getMWSuggestTemplate();
  87                 }
  88
  89                 return $vars;
  90         }
  91
  92         /**
  93          * Gets registration code for all modules
  94          *
  95          * @param $context ResourceLoaderContext object
  96          * @return String: JavaScript code for registering all modules with the client loader
  97          */
  98         public static function getModuleRegistrations( ResourceLoaderContext $context ) {
  99                 global $wgCacheEpoch;
 100                 wfProfileIn( __METHOD__ );
 101
 102                 $out = '';
 103                 $registrations = array();
 104                 foreach ( $context->getResourceLoader()->getModules() as $name => $module ) {
 105                         // Support module loader scripts
 106                         $loader = $module->getLoaderScript();
 107                         if ( $loader !== false ) {
 108                                 $deps = $module->getDependencies();
 109                                 $group = $module->getGroup();
 110                                 $version = wfTimestamp( TS_ISO_8601_BASIC,
 111                                         round( $module->getModifiedTime( $context ), -2 ) );
 112                                 $out .= ResourceLoader::makeCustomLoaderScript( $name, $version, $deps, $group, $loader );
 113                         }
 114                         // Automatically register module
 115                         else {
 116                                 $mtime = max( $module->getModifiedTime( $context ), wfTimestamp( TS_UNIX, $wgCacheEpoch ) );
 117                                 // Modules without dependencies or a group pass two arguments (name, timestamp) to
 118                                 // mediaWiki.loader.register()
 119                                 if ( !count( $module->getDependencies() && $module->getGroup() === null ) ) {
 120                                         $registrations[] = array( $name, $mtime );
 121                                 }
 122                                 // Modules with dependencies but no group pass three arguments
 123                                 // (name, timestamp, dependencies) to mediaWiki.loader.register()
 124                                 else if ( $module->getGroup() === null ) {
 125                                         $registrations[] = array(
 126                                                 $name, $mtime,  $module->getDependencies() );
 127                                 }
 128                                 // Modules with dependencies pass four arguments (name, timestamp, dependencies, group)
 129                                 // to mediaWiki.loader.register()
 130                                 else {
 131                                         $registrations[] = array(
 132                                                 $name, $mtime,  $module->getDependencies(), $module->getGroup() );
 133                                 }
 134                         }
 135                 }
 136                 $out .= ResourceLoader::makeLoaderRegisterScript( $registrations );
 137
 138                 wfProfileOut( __METHOD__ );
 139                 return $out;
 140         }
 141
 142         /* Methods */
 143
 144         public function getScript( ResourceLoaderContext $context ) {
 145                 global $IP, $wgLoadScript;
 146
 147                 $out = file_get_contents( "$IP/resources/startup.js" );
 148                 if ( $context->getOnly() === 'scripts' ) {
 149                         // Build load query for jquery and mediawiki modules
 150                         $query = array(
 151                                 'modules' => implode( '|', array( 'jquery', 'mediawiki' ) ),
 152                                 'only' => 'scripts',
 153                                 'lang' => $context->getLanguage(),
 154                                 'skin' => $context->getSkin(),
 155                                 'debug' => $context->getDebug() ? 'true' : 'false',
 156                                 'version' => wfTimestamp( TS_ISO_8601_BASIC, round( max(
 157                                         $context->getResourceLoader()->getModule( 'jquery' )->getModifiedTime( $context ),
 158                                         $context->getResourceLoader()->getModule( 'mediawiki' )->getModifiedTime( $context )
 159                                 ), -2 ) )
 160                         );
 161                         // Ensure uniform query order
 162                         ksort( $query );
 163
 164                         // Startup function
 165                         $configuration = $this->getConfig( $context );
 166                         $registrations = self::getModuleRegistrations( $context );
 167                         $out .= "var startUp = function() {\n" .
 168                                 "\t$registrations\n" .
 169                                 "\t" . Xml::encodeJsCall( 'mediaWiki.config.set', array( $configuration ) ) .
 170                                 "};\n";
 171
 172                         // Conditional script injection
 173                         $scriptTag = Html::linkedScript( $wgLoadScript . '?' . wfArrayToCGI( $query ) );
 174                         $out .= "if ( isCompatible() ) {\n" .
 175                                 "\t" . Xml::encodeJsCall( 'document.write', array( $scriptTag ) ) .
 176                                 "}\n" .
 177                                 "delete isCompatible;";
 178                 }
 179
 180                 return $out;
 181         }
 182
 183         public function getModifiedTime( ResourceLoaderContext $context ) {
 184                 global $IP, $wgCacheEpoch;
 185
 186                 $hash = $context->getHash();
 187                 if ( isset( $this->modifiedTime[$hash] ) ) {
 188                         return $this->modifiedTime[$hash];
 189                 }
 190                 $this->modifiedTime[$hash] = filemtime( "$IP/resources/startup.js" );
 191
 192                 // ATTENTION!: Because of the line above, this is not going to cause
 193                 // infinite recursion - think carefully before making changes to this
 194                 // code!
 195                 $time = wfTimestamp( TS_UNIX, $wgCacheEpoch );
 196                 foreach ( $context->getResourceLoader()->getModules() as $module ) {
 197                         $time = max( $time, $module->getModifiedTime( $context ) );
 198                 }
 199                 return $this->modifiedTime[$hash] = $time;
 200         }
 201
 202         public function getFlip( $context ) {
 203                 global $wgContLang;
 204
 205                 return $wgContLang->getDir() !== $context->getDirection();
 206         }
 207
 208         /* Methods */
 209
 210         public function getGroup() {
 211                 return 'startup';
 212         }
 213 }