resources/mediawiki/mediawiki.user.js

   1 /*
   2  * Implementation for mediaWiki.user
   3  */
   4
   5 ( function ( mw, $ ) {
   6
   7         /**
   8          * User object
   9          */
  10         function User( options, tokens ) {
  11
  12                 /* Private Members */
  13
  14                 var that = this;
  15                 var callbacks = {};
  16
  17                 /**
  18                  * Gets the current user's groups or rights.
  19                  * @param {String} info: One of 'groups' or 'rights'.
  20                  * @param {Function} callback
  21                  */
  22                 function getUserInfo( info, callback ) {
  23                         var api;
  24                         if ( callbacks[info] ) {
  25                                 callbacks[info].add( callback );
  26                                 return;
  27                         }
  28                         callbacks.rights = $.Callbacks('once memory');
  29                         callbacks.groups = $.Callbacks('once memory');
  30                         callbacks[info].add( callback );
  31                         api = new mw.Api();
  32                         api.get( {
  33                                 action: 'query',
  34                                 meta: 'userinfo',
  35                                 uiprop: 'rights|groups'
  36                         } ).always( function ( data ) {
  37                                 var rights, groups;
  38                                 if ( data.query && data.query.userinfo ) {
  39                                         rights = data.query.userinfo.rights;
  40                                         groups = data.query.userinfo.groups;
  41                                 }
  42                                 callbacks.rights.fire( rights || [] );
  43                                 callbacks.groups.fire( groups || [] );
  44                         } );
  45                 }
  46
  47                 /* Public Members */
  48
  49                 this.options = options || new mw.Map();
  50
  51                 this.tokens = tokens || new mw.Map();
  52
  53                 /* Public Methods */
  54
  55                 /**
  56                  * Generates a random user session ID (32 alpha-numeric characters).
  57                  *
  58                  * This information would potentially be stored in a cookie to identify a user during a
  59                  * session or series of sessions. Its uniqueness should not be depended on.
  60                  *
  61                  * @return String: Random set of 32 alpha-numeric characters
  62                  */
  63                 function generateId() {
  64                         var id = '';
  65                         var seed = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
  66                         for ( var i = 0, r; i < 32; i++ ) {
  67                                 r = Math.floor( Math.random() * seed.length );
  68                                 id += seed.substring( r, r + 1 );
  69                         }
  70                         return id;
  71                 }
  72
  73                 /**
  74                  * Gets the current user's name.
  75                  *
  76                  * @return Mixed: User name string or null if users is anonymous
  77                  */
  78                 this.getName = function () {
  79                         return mw.config.get( 'wgUserName' );
  80                 };
  81
  82                 /**
  83                  * @deprecated since 1.20 use mw.user.getName() instead
  84                  */
  85                 this.name = function () {
  86                         return this.getName();
  87                 };
  88
  89                 /**
  90                  * Checks if the current user is anonymous.
  91                  *
  92                  * @return Boolean
  93                  */
  94                 this.isAnon = function () {
  95                         return that.getName() === null;
  96                 };
  97
  98                 /**
  99                  * @deprecated since 1.20 use mw.user.isAnon() instead
 100                  */
 101                 this.anonymous = function () {
 102                         return that.isAnon();
 103                 };
 104
 105                 /**
 106                  * Gets a random session ID automatically generated and kept in a cookie.
 107                  *
 108                  * This ID is ephemeral for everyone, staying in their browser only until they close
 109                  * their browser.
 110                  *
 111                  * @return String: User name or random session ID
 112                  */
 113                 this.sessionId = function () {
 114                         var sessionId = $.cookie( 'mediaWiki.user.sessionId' );
 115                         if ( typeof sessionId === 'undefined' || sessionId === null ) {
 116                                 sessionId = generateId();
 117                                 $.cookie( 'mediaWiki.user.sessionId', sessionId, { 'expires': null, 'path': '/' } );
 118                         }
 119                         return sessionId;
 120                 };
 121
 122                 /**
 123                  * Gets the current user's name or a random ID automatically generated and kept in a cookie.
 124                  *
 125                  * This ID is persistent for anonymous users, staying in their browser up to 1 year. The
 126                  * expiration time is reset each time the ID is queried, so in most cases this ID will
 127                  * persist until the browser's cookies are cleared or the user doesn't visit for 1 year.
 128                  *
 129                  * @return String: User name or random session ID
 130                  */
 131                 this.id = function() {
 132                         var name = that.getName();
 133                         if ( name ) {
 134                                 return name;
 135                         }
 136                         var id = $.cookie( 'mediaWiki.user.id' );
 137                         if ( typeof id === 'undefined' || id === null ) {
 138                                 id = generateId();
 139                         }
 140                         // Set cookie if not set, or renew it if already set
 141                         $.cookie( 'mediaWiki.user.id', id, {
 142                                 expires: 365,
 143                                 path: '/'
 144                         } );
 145                         return id;
 146                 };
 147
 148                 /**
 149                  * Gets the user's bucket, placing them in one at random based on set odds if needed.
 150                  *
 151                  * @param key String: Name of bucket
 152                  * @param options Object: Bucket configuration options
 153                  * @param options.buckets Object: List of bucket-name/relative-probability pairs (required,
 154                  * must have at least one pair)
 155                  * @param options.version Number: Version of bucket test, changing this forces rebucketing
 156                  * (optional, default: 0)
 157                  * @param options.tracked Boolean: Track the event of bucketing through the API module of
 158                  * the ClickTracking extension (optional, default: false)
 159                  * @param options.expires Number: Length of time (in days) until the user gets rebucketed
 160                  * (optional, default: 30)
 161                  * @return String: Bucket name - the randomly chosen key of the options.buckets object
 162                  *
 163                  * @example
 164                  *     mw.user.bucket( 'test', {
 165                  *         'buckets': { 'ignored': 50, 'control': 25, 'test': 25 },
 166                  *         'version': 1,
 167                  *         'tracked': true,
 168                  *         'expires': 7
 169                  *     } );
 170                  */
 171                 this.bucket = function ( key, options ) {
 172                         options = $.extend( {
 173                                 'buckets': {},
 174                                 'version': 0,
 175                                 'tracked': false,
 176                                 'expires': 30
 177                         }, options || {} );
 178                         var cookie = $.cookie( 'mediaWiki.user.bucket:' + key );
 179                         var bucket = null;
 180                         var version = 0;
 181                         // Bucket information is stored as 2 integers, together as version:bucket like: "1:2"
 182                         if ( typeof cookie === 'string' && cookie.length > 2 && cookie.indexOf( ':' ) > 0 ) {
 183                                 var parts = cookie.split( ':' );
 184                                 if ( parts.length > 1 && Number( parts[0] ) === options.version ) {
 185                                         version = Number( parts[0] );
 186                                         bucket = String( parts[1] );
 187                                 }
 188                         }
 189                         if ( bucket === null ) {
 190                                 if ( !$.isPlainObject( options.buckets ) ) {
 191                                         throw 'Invalid buckets error. Object expected for options.buckets.';
 192                                 }
 193                                 version = Number( options.version );
 194                                 // Find range
 195                                 var     range = 0, k;
 196                                 for ( k in options.buckets ) {
 197                                         range += options.buckets[k];
 198                                 }
 199                                 // Select random value within range
 200                                 var rand = Math.random() * range;
 201                                 // Determine which bucket the value landed in
 202                                 var total = 0;
 203                                 for ( k in options.buckets ) {
 204                                         bucket = k;
 205                                         total += options.buckets[k];
 206                                         if ( total >= rand ) {
 207                                                 break;
 208                                         }
 209                                 }
 210                                 if ( options.tracked ) {
 211                                         mw.loader.using( 'jquery.clickTracking', function () {
 212                                                 $.trackAction(
 213                                                         'mediaWiki.user.bucket:' + key + '@' + version + ':' + bucket
 214                                                 );
 215                                         } );
 216                                 }
 217                                 $.cookie(
 218                                         'mediaWiki.user.bucket:' + key,
 219                                         version + ':' + bucket,
 220                                         { 'path': '/', 'expires': Number( options.expires ) }
 221                                 );
 222                         }
 223                         return bucket;
 224                 };
 225
 226                 /**
 227                  * Gets the current user's groups.
 228                  */
 229                 this.getGroups = function ( callback ) {
 230                         getUserInfo( 'groups', callback );
 231                 };
 232
 233                 /**
 234                  * Gets the current user's rights.
 235                  */
 236                 this.getRights = function ( callback ) {
 237                         getUserInfo( 'rights', callback );
 238                 };
 239         }
 240
 241         // Extend the skeleton mw.user from mediawiki.js
 242         // This is kind of ugly but we're stuck with this for b/c reasons
 243         mw.user = new User( mw.user.options, mw.user.tokens );
 244
 245 }( mediaWiki, jQuery ) );