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                 var user, callbacks;
  12
  13                 /* Private Members */
  14
  15                 user = this;
  16                 callbacks = {};
  17
  18                 /**
  19                  * Gets the current user's groups or rights.
  20                  * @param {String} info: One of 'groups' or 'rights'.
  21                  * @param {Function} callback
  22                  */
  23                 function getUserInfo( info, callback ) {
  24                         var api;
  25                         if ( callbacks[info] ) {
  26                                 callbacks[info].add( callback );
  27                                 return;
  28                         }
  29                         callbacks.rights = $.Callbacks('once memory');
  30                         callbacks.groups = $.Callbacks('once memory');
  31                         callbacks[info].add( callback );
  32                         api = new mw.Api();
  33                         api.get( {
  34                                 action: 'query',
  35                                 meta: 'userinfo',
  36                                 uiprop: 'rights|groups'
  37                         } ).always( function ( data ) {
  38                                 var rights, groups;
  39                                 if ( data.query && data.query.userinfo ) {
  40                                         rights = data.query.userinfo.rights;
  41                                         groups = data.query.userinfo.groups;
  42                                 }
  43                                 callbacks.rights.fire( rights || [] );
  44                                 callbacks.groups.fire( groups || [] );
  45                         } );
  46                 }
  47
  48                 /* Public Members */
  49
  50                 this.options = options || new mw.Map();
  51
  52                 this.tokens = tokens || new mw.Map();
  53
  54                 /* Public Methods */
  55
  56                 /**
  57                  * Generates a random user session ID (32 alpha-numeric characters).
  58                  *
  59                  * This information would potentially be stored in a cookie to identify a user during a
  60                  * session or series of sessions. Its uniqueness should not be depended on.
  61                  *
  62                  * @return String: Random set of 32 alpha-numeric characters
  63                  */
  64                 this.generateRandomSessionId = function () {
  65                         var i, r,
  66                                 id = '',
  67                                 seed = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
  68                         for ( i = 0; i < 32; i++ ) {
  69                                 r = Math.floor( Math.random() * seed.length );
  70                                 id += seed.substring( r, r + 1 );
  71                         }
  72                         return id;
  73                 };
  74
  75                 /**
  76                  * Gets the current user's name.
  77                  *
  78                  * @return Mixed: User name string or null if users is anonymous
  79                  */
  80                 this.getName = function () {
  81                         return mw.config.get( 'wgUserName' );
  82                 };
  83
  84                 /**
  85                  * @deprecated since 1.20 use mw.user.getName() instead
  86                  */
  87                 this.name = function () {
  88                         return this.getName();
  89                 };
  90
  91                 /**
  92                  * Get date user registered, if available.
  93                  *
  94                  * @return {Date|false|null} date user registered, or false for anonymous users, or
  95                  *  null when data is not available
  96                  */
  97                 this.getRegistration = function () {
  98                         var registration = mw.config.get( 'wgUserRegistration' );
  99                         if ( this.isAnon() ) {
 100                                 return false;
 101                         } else if ( registration === null ) {
 102                                 // Information may not be available if they signed up before
 103                                 // MW began storing this.
 104                                 return null;
 105                         } else {
 106                                 return new Date( registration );
 107                         }
 108                 };
 109
 110                 /**
 111                  * Checks if the current user is anonymous.
 112                  *
 113                  * @return Boolean
 114                  */
 115                 this.isAnon = function () {
 116                         return user.getName() === null;
 117                 };
 118
 119                 /**
 120                  * @deprecated since 1.20 use mw.user.isAnon() instead
 121                  */
 122                 this.anonymous = function () {
 123                         return user.isAnon();
 124                 };
 125
 126                 /**
 127                  * Gets a random session ID automatically generated and kept in a cookie.
 128                  *
 129                  * This ID is ephemeral for everyone, staying in their browser only until they close
 130                  * their browser.
 131                  *
 132                  * @return String: User name or random session ID
 133                  */
 134                 this.sessionId = function () {
 135                         var sessionId = $.cookie( 'mediaWiki.user.sessionId' );
 136                         if ( typeof sessionId === 'undefined' || sessionId === null ) {
 137                                 sessionId = user.generateRandomSessionId();
 138                                 $.cookie( 'mediaWiki.user.sessionId', sessionId, { 'expires': null, 'path': '/' } );
 139                         }
 140                         return sessionId;
 141                 };
 142
 143                 /**
 144                  * Gets the current user's name or the session ID
 145                  *
 146                  * @return {string} User name or random session ID
 147                  */
 148                 this.id = function () {
 149                         var name = user.getName();
 150                         if ( name ) {
 151                                 return name;
 152                         }
 153                         return user.sessionId();
 154                 };
 155
 156                 /**
 157                  * Gets the user's bucket, placing them in one at random based on set odds if needed.
 158                  *
 159                  * @param key String: Name of bucket
 160                  * @param options Object: Bucket configuration options
 161                  * @param options.buckets Object: List of bucket-name/relative-probability pairs (required,
 162                  * must have at least one pair)
 163                  * @param options.version Number: Version of bucket test, changing this forces rebucketing
 164                  * (optional, default: 0)
 165                  * @param options.expires Number: Length of time (in days) until the user gets rebucketed
 166                  * (optional, default: 30)
 167                  * @return String: Bucket name - the randomly chosen key of the options.buckets object
 168                  *
 169                  * @example
 170                  *     mw.user.bucket( 'test', {
 171                  *         'buckets': { 'ignored': 50, 'control': 25, 'test': 25 },
 172                  *         'version': 1,
 173                  *         'expires': 7
 174                  *     } );
 175                  */
 176                 this.bucket = function ( key, options ) {
 177                         var cookie, parts, version, bucket,
 178                                 range, k, rand, total;
 179
 180                         options = $.extend( {
 181                                 buckets: {},
 182                                 version: 0,
 183                                 expires: 30
 184                         }, options || {} );
 185
 186                         cookie = $.cookie( 'mediaWiki.user.bucket:' + key );
 187
 188                         // Bucket information is stored as 2 integers, together as version:bucket like: "1:2"
 189                         if ( typeof cookie === 'string' && cookie.length > 2 && cookie.indexOf( ':' ) > 0 ) {
 190                                 parts = cookie.split( ':' );
 191                                 if ( parts.length > 1 && Number( parts[0] ) === options.version ) {
 192                                         version = Number( parts[0] );
 193                                         bucket = String( parts[1] );
 194                                 }
 195                         }
 196                         if ( bucket === undefined ) {
 197                                 if ( !$.isPlainObject( options.buckets ) ) {
 198                                         throw 'Invalid buckets error. Object expected for options.buckets.';
 199                                 }
 200                                 version = Number( options.version );
 201                                 // Find range
 202                                 range = 0;
 203                                 for ( k in options.buckets ) {
 204                                         range += options.buckets[k];
 205                                 }
 206                                 // Select random value within range
 207                                 rand = Math.random() * range;
 208                                 // Determine which bucket the value landed in
 209                                 total = 0;
 210                                 for ( k in options.buckets ) {
 211                                         bucket = k;
 212                                         total += options.buckets[k];
 213                                         if ( total >= rand ) {
 214                                                 break;
 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 ) );