* @author Trevor Parscal
*/
-defined( 'MEDIAWIKI' ) || die( 1 );
-
/**
* Dynamic JavaScript and CSS resource loading system.
*
- * Most of the documention is on the MediaWiki documentation wiki starting at
+ * Most of the documention is on the MediaWiki documentation wiki starting at:
* http://www.mediawiki.org/wiki/ResourceLoader
*/
class ResourceLoader {
/* Protected Static Members */
- // @var array list of module name/ResourceLoaderModule object pairs
+ /** Array: List of module name/ResourceLoaderModule object pairs */
protected $modules = array();
+ /** Associative array mapping module name to info associative array */
+ protected $moduleInfos = array();
/* Protected Methods */
-
+
/**
- * Loads information stored in the database about modules
+ * Loads information stored in the database about modules.
*
- * This is not inside the module code because it's so much more performant to request all of the information at once
- * than it is to have each module requests it's own information.
- *
- * This method grab modules dependencies from the database and initialize modules object.
- * A first pass compute dependencies, a second one the blob mtime.
- *
- * @param $modules Array List of module names to preload information for
- * @param $context ResourceLoaderContext Context to load the information within
+ * This method grabs modules dependencies from the database and updates modules
+ * objects.
+ *
+ * This is not inside the module code because it is much faster to
+ * request all of the information at once than it is to have each module
+ * requests its own information. This sacrifice of modularity yields a substantial
+ * performance improvement.
+ *
+ * @param $modules Array: List of module names to preload information for
+ * @param $context ResourceLoaderContext: Context to load the information within
*/
protected function preloadModuleInfo( array $modules, ResourceLoaderContext $context ) {
if ( !count( $modules ) ) {
- return; # or Database*::select() will explode
+ return; // or else Database*::select() will explode, plus it's cheaper!
}
- $dbr = wfGetDb( DB_SLAVE );
+ $dbr = wfGetDB( DB_SLAVE );
$skin = $context->getSkin();
$lang = $context->getLanguage();
), __METHOD__
);
- // Set modules dependecies
+ // Set modules' dependecies
$modulesWithDeps = array();
foreach ( $res as $row ) {
- $this->modules[$row->md_module]->setFileDependencies( $skin,
+ $this->getModule( $row->md_module )->setFileDependencies( $skin,
FormatJson::decode( $row->md_deps, true )
);
$modulesWithDeps[] = $row->md_module;
}
+
// Register the absence of a dependency row too
foreach ( array_diff( $modules, $modulesWithDeps ) as $name ) {
- $this->modules[$name]->setFileDependencies( $skin, array() );
+ $this->getModule( $name )->setFileDependencies( $skin, array() );
}
// Get message blob mtimes. Only do this for modules with messages
$modulesWithMessages = array();
$modulesWithoutMessages = array();
foreach ( $modules as $name ) {
- if ( count( $this->modules[$name]->getMessages() ) ) {
+ if ( count( $this->getModule( $name )->getMessages() ) ) {
$modulesWithMessages[] = $name;
} else {
$modulesWithoutMessages[] = $name;
), __METHOD__
);
foreach ( $res as $row ) {
- $this->modules[$row->mr_resource]->setMsgBlobMtime( $lang, $row->mr_timestamp );
+ $this->getModule( $row->mr_resource )->setMsgBlobMtime( $lang, $row->mr_timestamp );
}
}
foreach ( $modulesWithoutMessages as $name ) {
- $this->modules[$name]->setMsgBlobMtime( $lang, 0 );
+ $this->getModule( $name )->setMsgBlobMtime( $lang, 0 );
}
}
/**
- * Runs text (js,CSS) through a filter, caching the filtered result for future calls.
+ * Runs JavaScript or CSS data through a filter, caching the filtered result for future calls.
*
- * Availables filters are:
+ * Available filters are:
* - minify-js \see JSMin::minify
* - minify-css \see CSSMin::minify
* - flip-css \see CSSJanus::transform
- * When the filter names does not exist, text is returned as is.
- *
- * @param $filter String: name of filter to run
- * @param $data String: text to filter, such as JavaScript or CSS text
- * @param $file String: path to file being filtered, (optional: only required for CSS to resolve paths)
- * @return String: filtered data
+ *
+ * If $data is empty, only contains whitespace or the filter was unknown,
+ * $data is returned unmodified.
+ *
+ * @param $filter String: Name of filter to run
+ * @param $data String: Text to filter, such as JavaScript or CSS text
+ * @return String: Filtered data
*/
protected function filter( $filter, $data ) {
- global $wgMemc;
wfProfileIn( __METHOD__ );
- // For empty or whitespace-only things, don't do any processing
- # FIXME: we should return the data unfiltered if $filter is not supported.
- # that would save up a md5 computation and one memcached get.
- if ( trim( $data ) === '' ) {
+ // For empty/whitespace-only data or for unknown filters, don't perform
+ // any caching or processing
+ if ( trim( $data ) === ''
+ || !in_array( $filter, array( 'minify-js', 'minify-css', 'flip-css' ) ) )
+ {
wfProfileOut( __METHOD__ );
return $data;
}
- // Try memcached
+ // Try for cache hit
+ // Use CACHE_ANYTHING since filtering is very slow compared to DB queries
$key = wfMemcKey( 'resourceloader', 'filter', $filter, md5( $data ) );
- $cached = $wgMemc->get( $key );
-
- if ( $cached !== false && $cached !== null ) {
+ $cache = wfGetCache( CACHE_ANYTHING );
+ $cacheEntry = $cache->get( $key );
+ if ( is_string( $cacheEntry ) ) {
wfProfileOut( __METHOD__ );
- return $cached;
+ return $cacheEntry;
}
- // Run the filter
+ // Run the filter - we've already verified one of these will work
try {
switch ( $filter ) {
- # note: if adding a new filter. Please update method documentation above.
case 'minify-js':
$result = JSMin::minify( $data );
break;
case 'flip-css':
$result = CSSJanus::transform( $data, true, false );
break;
- default:
- // Don't cache anything, just pass right through
- wfProfileOut( __METHOD__ );
- return $data;
}
} catch ( Exception $exception ) {
- throw new MWException( 'Filter threw an exception: ' . $exception->getMessage() );
+ throw new MWException( 'ResourceLoader filter error. ' .
+ 'Exception was thrown: ' . $exception->getMessage() );
}
- // Save filtered text to memcached
- $wgMemc->set( $key, $result );
+ // Save filtered text to Memcached
+ $cache->set( $key, $result );
wfProfileOut( __METHOD__ );
+
return $result;
}
/* Methods */
/**
- * Registers core modules and runs registration hooks
+ * Registers core modules and runs registration hooks.
*/
public function __construct() {
- global $IP;
+ global $IP, $wgResourceModules;
wfProfileIn( __METHOD__ );
$this->register( include( "$IP/resources/Resources.php" ) );
// Register extension modules
wfRunHooks( 'ResourceLoaderRegisterModules', array( &$this ) );
+ $this->register( $wgResourceModules );
wfProfileOut( __METHOD__ );
}
/**
* Registers a module with the ResourceLoader system.
- *
- * Note that registering the same object under multiple names is not supported
- * and may silently fail in all kinds of interesting ways.
- *
- * @param $name Mixed: string of name of module or array of name/object pairs
- * @param $object ResourceLoaderModule: module object (optional when using
- * multiple-registration calling style)
- * @return Boolean: false if there were any errors, in which case one or more
- * modules were not registered
- *
- * @todo We need much more clever error reporting, not just in detailing what
- * happened, but in bringing errors to the client in a way that they can
- * easily see them if they want to, such as by using FireBug
+ *
+ * @param $name Mixed: Name of module as a string or List of name/object pairs as an array
+ * @param $info Module info array. For backwards compatibility with 1.17alpha,
+ * this may also be a ResourceLoaderModule object. Optional when using
+ * multiple-registration calling style.
+ * @throws MWException: If a duplicate module registration is attempted
+ * @throws MWException: If something other than a ResourceLoaderModule is being registered
+ * @return Boolean: False if there were any errors, in which case one or more modules were not
+ * registered
*/
- public function register( $name, ResourceLoaderModule $object = null ) {
+ public function register( $name, $info = null ) {
wfProfileIn( __METHOD__ );
-
+
// Allow multiple modules to be registered in one call
- if ( is_array( $name ) && !isset( $object ) ) {
+ if ( is_array( $name ) ) {
foreach ( $name as $key => $value ) {
$this->register( $key, $value );
}
-
- wfProfileOut( __METHOD__ );
return;
}
// Disallow duplicate registrations
- if ( isset( $this->modules[$name] ) ) {
+ if ( isset( $this->moduleInfos[$name] ) ) {
// A module has already been registered by this name
- throw new MWException( 'Another module has already been registered as ' . $name );
- }
-
- // Validate the input (type hinting lets null through)
- if ( !( $object instanceof ResourceLoaderModule ) ) {
- throw new MWException( 'Invalid ResourceLoader module error. Instances of ResourceLoaderModule expected.' );
+ throw new MWException(
+ 'ResourceLoader duplicate registration error. ' .
+ 'Another module has already been registered as ' . $name
+ );
}
-
+
// Attach module
- $this->modules[$name] = $object;
- $object->setName( $name );
-
+ if ( is_object( $info ) ) {
+ // Old calling convention
+ // Validate the input
+ if ( !( $info instanceof ResourceLoaderModule ) ) {
+ throw new MWException( 'ResourceLoader invalid module error. ' .
+ 'Instances of ResourceLoaderModule expected.' );
+ }
+
+ $this->moduleInfos[$name] = array( 'object' => $info );
+ $info->setName( $name );
+ $this->modules[$name] = $info;
+ } else {
+ // New calling convention
+ $this->moduleInfos[$name] = $info;
+ }
+
wfProfileOut( __METHOD__ );
}
- /**
- * Gets a map of all modules and their options
+ /**
+ * Get a list of module names
*
- * @return Array: array( modulename => ResourceLoaderModule )
+ * @return Array: List of module names
*/
- public function getModules() {
- return $this->modules;
+ public function getModuleNames() {
+ return array_keys( $this->moduleInfos );
}
/**
- * Get the ResourceLoaderModule object for a given module name
+ * Get the ResourceLoaderModule object for a given module name.
*
- * @param $name String: module name
- * @return mixed ResourceLoaderModule or null if not registered
+ * @param $name String: Module name
+ * @return Mixed: ResourceLoaderModule if module has been registered, null otherwise
*/
public function getModule( $name ) {
- return isset( $this->modules[$name] ) ? $this->modules[$name] : null;
+ if ( !isset( $this->modules[$name] ) ) {
+ if ( !isset( $this->moduleInfos[$name] ) ) {
+ // No such module
+ return null;
+ }
+ // Construct the requested object
+ $info = $this->moduleInfos[$name];
+ if ( isset( $info['object'] ) ) {
+ // Object given in info array
+ $object = $info['object'];
+ } else {
+ if ( !isset( $info['class'] ) ) {
+ $class = 'ResourceLoaderFileModule';
+ } else {
+ $class = $info['class'];
+ }
+ $object = new $class( $info );
+ }
+ $object->setName( $name );
+ $this->modules[$name] = $object;
+ }
+
+ return $this->modules[$name];
}
/**
- * Outputs a response to a resource load-request, including a content-type header
+ * Outputs a response to a resource load-request, including a content-type header.
*
- * @param $context ResourceLoaderContext object
+ * @param $context ResourceLoaderContext: Context in which a response should be formed
*/
public function respond( ResourceLoaderContext $context ) {
global $wgResourceLoaderMaxage, $wgCacheEpoch;
wfProfileIn( __METHOD__ );
-
+
// Split requested modules into two groups, modules and missing
$modules = array();
$missing = array();
-
foreach ( $context->getModules() as $name ) {
- if ( isset( $this->modules[$name] ) ) {
- $modules[$name] = $this->modules[$name];
+ if ( isset( $this->moduleInfos[$name] ) ) {
+ $modules[$name] = $this->getModule( $name );
} else {
$missing[] = $name;
}
}
- // If a version wasn't specified we need a shorter expiry time for updates to
- // propagate to clients quickly
+ // If a version wasn't specified we need a shorter expiry time for updates
+ // to propagate to clients quickly
if ( is_null( $context->getVersion() ) ) {
$maxage = $wgResourceLoaderMaxage['unversioned']['client'];
$smaxage = $wgResourceLoaderMaxage['unversioned']['server'];
// Preload information needed to the mtime calculation below
$this->preloadModuleInfo( array_keys( $modules ), $context );
+ wfProfileIn( __METHOD__.'-getModifiedTime' );
+
// To send Last-Modified and support If-Modified-Since, we need to detect
// the last modified time
- wfProfileIn( __METHOD__.'-getModifiedTime' );
$mtime = wfTimestamp( TS_UNIX, $wgCacheEpoch );
foreach ( $modules as $module ) {
// Bypass squid cache if the request includes any private modules
// Calculate maximum modified time
$mtime = max( $mtime, $module->getModifiedTime( $context ) );
}
+
wfProfileOut( __METHOD__.'-getModifiedTime' );
- header( 'Content-Type: ' . ( $context->getOnly() === 'styles' ? 'text/css' : 'text/javascript' ) );
+ if ( $context->getOnly() === 'styles' ) {
+ header( 'Content-Type: text/css' );
+ } else {
+ header( 'Content-Type: text/javascript' );
+ }
header( 'Last-Modified: ' . wfTimestamp( TS_RFC2822, $mtime ) );
- header( "Cache-Control: public, max-age=$maxage, s-maxage=$smaxage" );
- header( 'Expires: ' . wfTimestamp( TS_RFC2822, min( $maxage, $smaxage ) + time() ) );
+ if ( $context->getDebug() ) {
+ header( 'Cache-Control: must-revalidate' );
+ } else {
+ header( "Cache-Control: public, max-age=$maxage, s-maxage=$smaxage" );
+ header( 'Expires: ' . wfTimestamp( TS_RFC2822, min( $maxage, $smaxage ) + time() ) );
+ }
// If there's an If-Modified-Since header, respond with a 304 appropriately
$ims = $context->getRequest()->getHeader( 'If-Modified-Since' );
wfProfileOut( __METHOD__ );
return;
}
-
+
+ // Generate a response
$response = $this->makeModuleResponse( $context, $modules, $missing );
+
+ // Tack on PHP warnings as a comment in debug mode
if ( $context->getDebug() && strlen( $warnings = ob_get_contents() ) ) {
$response .= "/*\n$warnings\n*/";
}
+
// Clear any warnings from the buffer
ob_clean();
echo $response;
}
/**
- *
- * @param $context ResourceLoaderContext
- * @param $modules Array array( modulename => ResourceLoaderModule )
- * @param $missing Unavailables modules (Default null)
+ * Generates code for a response
+ *
+ * @param $context ResourceLoaderContext: Context in which to generate a response
+ * @param $modules Array: List of module objects keyed by module name
+ * @param $missing Array: List of unavailable modules (optional)
+ * @return String: Response data
*/
- public function makeModuleResponse( ResourceLoaderContext $context, array $modules, $missing = null ) {
+ public function makeModuleResponse( ResourceLoaderContext $context,
+ array $modules, $missing = array() )
+ {
// Pre-fetch blobs
- $blobs = $context->shouldIncludeMessages() ?
- MessageBlobStore::get( $this, $modules, $context->getLanguage() ) : array();
+ if ( $context->shouldIncludeMessages() ) {
+ $blobs = MessageBlobStore::get( $this, $modules, $context->getLanguage() );
+ } else {
+ $blobs = array();
+ }
// Generate output
$out = '';
foreach ( $modules as $name => $module ) {
+
wfProfileIn( __METHOD__ . '-' . $name );
// Scripts
// Styles
$styles = array();
- if ( $context->shouldIncludeStyles() && ( count( $styles = $module->getStyles( $context ) ) ) ) {
+ if ( $context->shouldIncludeStyles() ) {
+ $styles = $module->getStyles( $context );
// Flip CSS on a per-module basis
- if ( $this->modules[$name]->getFlip( $context ) ) {
+ if ( $styles && $module->getFlip( $context ) ) {
foreach ( $styles as $media => $style ) {
$styles[$media] = $this->filter( 'flip-css', $style );
}
}
// Messages
- $messages = isset( $blobs[$name] ) ? $blobs[$name] : '{}';
+ $messagesBlob = isset( $blobs[$name] ) ? $blobs[$name] : array();
// Append output
switch ( $context->getOnly() ) {
$out .= self::makeCombinedStyles( $styles );
break;
case 'messages':
- $out .= self::makeMessageSetScript( $messages );
+ $out .= self::makeMessageSetScript( new XmlJsCode( $messagesBlob ) );
break;
default:
- // Minify CSS before embedding in mediaWiki.loader.implement call (unless in debug mode)
+ // Minify CSS before embedding in mediaWiki.loader.implement call
+ // (unless in debug mode)
if ( !$context->getDebug() ) {
foreach ( $styles as $media => $style ) {
$styles[$media] = $this->filter( 'minify-css', $style );
}
}
- $out .= self::makeLoaderImplementScript( $name, $scripts, $styles, $messages );
+ $out .= self::makeLoaderImplementScript( $name, $scripts, $styles,
+ new XmlJsCode( $messagesBlob ) );
break;
}
-
+
wfProfileOut( __METHOD__ . '-' . $name );
}
// Update module states
if ( $context->shouldIncludeScripts() ) {
// Set the state of modules loaded as only scripts to ready
- if ( count( $modules ) && $context->getOnly() === 'scripts' && !isset( $modules['startup'] ) ) {
- $out .= self::makeLoaderStateScript( array_fill_keys( array_keys( $modules ), 'ready' ) );
+ if ( count( $modules ) && $context->getOnly() === 'scripts'
+ && !isset( $modules['startup'] ) )
+ {
+ $out .= self::makeLoaderStateScript(
+ array_fill_keys( array_keys( $modules ), 'ready' ) );
}
// Set the state of modules which were requested but unavailable as missing
if ( is_array( $missing ) && count( $missing ) ) {
}
}
}
-
+
/* Static Methods */
-
+
+ /**
+ * Returns JS code to call to mediaWiki.loader.implement for a module with
+ * given properties.
+ *
+ * @param $name Module name
+ * @param $scripts Array: List of JavaScript code snippets to be executed after the
+ * module is loaded
+ * @param $styles Array: List of CSS strings keyed by media type
+ * @param $messages Mixed: List of messages associated with this module. May either be an
+ * associative array mapping message key to value, or a JSON-encoded message blob containing
+ * the same data, wrapped in an XmlJsCode object.
+ */
public static function makeLoaderImplementScript( $name, $scripts, $styles, $messages ) {
if ( is_array( $scripts ) ) {
$scripts = implode( $scripts, "\n" );
}
- if ( is_array( $styles ) ) {
- $styles = count( $styles ) ? FormatJson::encode( $styles ) : 'null';
- }
- if ( is_array( $messages ) ) {
- $messages = count( $messages ) ? FormatJson::encode( $messages ) : 'null';
- }
- return "mediaWiki.loader.implement( '$name', function() {{$scripts}},\n$styles,\n$messages );\n";
+ return Xml::encodeJsCall(
+ 'mediaWiki.loader.implement',
+ array(
+ $name,
+ new XmlJsCode( "function() {{$scripts}}" ),
+ (object)$styles,
+ (object)$messages
+ ) );
}
+ /**
+ * Returns JS code which, when called, will register a given list of messages.
+ *
+ * @param $messages Mixed: Either an associative array mapping message key to value, or a
+ * JSON-encoded message blob containing the same data, wrapped in an XmlJsCode object.
+ */
public static function makeMessageSetScript( $messages ) {
- if ( is_array( $messages ) ) {
- $messages = count( $messages ) ? FormatJson::encode( $messages ) : 'null';
- }
- return "mediaWiki.msg.set( $messages );\n";
+ return Xml::encodeJsCall( 'mediaWiki.messages.set', array( (object)$messages ) );
}
+ /**
+ * Combines an associative array mapping media type to CSS into a
+ * single stylesheet with @media blocks.
+ *
+ * @param $styles Array: List of CSS strings keyed by media type
+ */
public static function makeCombinedStyles( array $styles ) {
$out = '';
foreach ( $styles as $media => $style ) {
return $out;
}
+ /**
+ * Returns a JS call to mediaWiki.loader.state, which sets the state of a
+ * module or modules to a given value. Has two calling conventions:
+ *
+ * - ResourceLoader::makeLoaderStateScript( $name, $state ):
+ * Set the state of a single module called $name to $state
+ *
+ * - ResourceLoader::makeLoaderStateScript( array( $name => $state, ... ) ):
+ * Set the state of modules with the given names to the given states
+ */
public static function makeLoaderStateScript( $name, $state = null ) {
if ( is_array( $name ) ) {
- $statuses = FormatJson::encode( $name );
- return "mediaWiki.loader.state( $statuses );\n";
+ return Xml::encodeJsCall( 'mediaWiki.loader.state', array( $name ) );
} else {
- $name = Xml::escapeJsString( $name );
- $state = Xml::escapeJsString( $state );
- return "mediaWiki.loader.state( '$name', '$state' );\n";
+ return Xml::encodeJsCall( 'mediaWiki.loader.state', array( $name, $state ) );
}
}
+ /**
+ * Returns JS code which calls the script given by $script. The script will
+ * be called with local variables name, version, dependencies and group,
+ * which will have values corresponding to $name, $version, $dependencies
+ * and $group as supplied.
+ *
+ * @param $name String: Module name
+ * @param $version Integer: Module version number as a timestamp
+ * @param $dependencies Array: List of module names on which this module depends
+ * @param $group String: Group which the module is in.
+ * @param $script String: JavaScript code
+ */
public static function makeCustomLoaderScript( $name, $version, $dependencies, $group, $script ) {
- $name = Xml::escapeJsString( $name );
- $version = (int) $version > 1 ? (int) $version : 1;
- $dependencies = FormatJson::encode( $dependencies );
- $group = FormatJson::encode( $group );
$script = str_replace( "\n", "\n\t", trim( $script ) );
- return "( function( name, version, dependencies, group ) {\n\t$script\n} )" .
- "( '$name', $version, $dependencies, $group );\n";
+ return Xml::encodeJsCall(
+ "( function( name, version, dependencies, group ) {\n\t$script\n} )",
+ array( $name, $version, $dependencies, $group ) );
}
- public static function makeLoaderRegisterScript( $name, $version = null, $dependencies = null, $group = null ) {
+ /**
+ * Returns JS code which calls mediaWiki.loader.register with the given
+ * parameters. Has three calling conventions:
+ *
+ * - ResourceLoader::makeLoaderRegisterScript( $name, $version, $dependencies, $group ):
+ * Register a single module.
+ *
+ * - ResourceLoader::makeLoaderRegisterScript( array( $name1, $name2 ) ):
+ * Register modules with the given names.
+ *
+ * - ResourceLoader::makeLoaderRegisterScript( array(
+ * array( $name1, $version1, $dependencies1, $group1 ),
+ * array( $name2, $version2, $dependencies1, $group2 ),
+ * ...
+ * ) ):
+ * Registers modules with the given names and parameters.
+ *
+ * @param $name String: Module name
+ * @param $version Integer: Module version number as a timestamp
+ * @param $dependencies Array: List of module names on which this module depends
+ * @param $group String: group which the module is in.
+ */
+ public static function makeLoaderRegisterScript( $name, $version = null,
+ $dependencies = null, $group = null )
+ {
if ( is_array( $name ) ) {
- $registrations = FormatJson::encode( $name );
- return "mediaWiki.loader.register( $registrations );\n";
+ return Xml::encodeJsCall( 'mediaWiki.loader.register', array( $name ) );
} else {
- $name = Xml::escapeJsString( $name );
$version = (int) $version > 1 ? (int) $version : 1;
- $dependencies = FormatJson::encode( $dependencies );
- $group = FormatJson::encode( $group );
- return "mediaWiki.loader.register( '$name', $version, $dependencies, $group );\n";
+ return Xml::encodeJsCall( 'mediaWiki.loader.register',
+ array( $name, $version, $dependencies, $group ) );
}
}
+ /**
+ * Returns JS code which runs given JS code if the client-side framework is
+ * present.
+ *
+ * @param $script String: JavaScript code
+ */
public static function makeLoaderConditionalScript( $script ) {
$script = str_replace( "\n", "\n\t", trim( $script ) );
return "if ( window.mediaWiki ) {\n\t$script\n}\n";
}
+ /**
+ * Returns JS code which will set the MediaWiki configuration array to
+ * the given value.
+ *
+ * @param $configuration Array: List of configuration values keyed by variable name
+ */
public static function makeConfigSetScript( array $configuration ) {
- $configuration = FormatJson::encode( $configuration );
- return "mediaWiki.config.set( $configuration );\n";
+ return Xml::encodeJsCall( 'mediaWiki.config.set', array( $configuration ) );
+ }
+
+ /**
+ * Determine whether debug mode was requested
+ * Order of priority is 1) request param, 2) cookie, 3) $wg setting
+ * @return bool
+ */
+ public static function inDebugMode() {
+ global $wgRequest, $wgResourceLoaderDebug;
+ static $retval = null;
+ if ( !is_null( $retval ) )
+ return $retval;
+ return $retval = $wgRequest->getFuzzyBool( 'debug',
+ $wgRequest->getCookie( 'resourceLoaderDebug', '', $wgResourceLoaderDebug ) );
}
}