resources/mediawiki.api/mediawiki.api.edit.js

   1 /**
   2  * @class mw.Api.plugin.edit
   3  */
   4 ( function ( mw, $ ) {
   5
   6         // Cache token so we don't have to keep fetching new ones for every single request.
   7         var cachedToken = null;
   8
   9         $.extend( mw.Api.prototype, {
  10
  11                 /**
  12                  * Post to API with edit token. If we have no token, get one and try to post.
  13                  * If we have a cached token try using that, and if it fails, blank out the
  14                  * cached token and start over.
  15                  *
  16                  * @param {Object} params API parameters
  17                  * @param {Function} [ok] Success callback (deprecated)
  18                  * @param {Function} [err] Error callback (deprecated)
  19                  * @return {jQuery.Promise} See #post
  20                  */
  21                 postWithEditToken: function ( params, ok, err ) {
  22                         var useTokenToPost, getTokenIfBad,
  23                                 api = this;
  24                         if ( cachedToken === null ) {
  25                                 // We don't have a valid cached token, so get a fresh one and try posting.
  26                                 // We do not trap any 'badtoken' or 'notoken' errors, because we don't want
  27                                 // an infinite loop. If this fresh token is bad, something else is very wrong.
  28                                 useTokenToPost = function ( token ) {
  29                                         params.token = token;
  30                                         api.post( params, { ok: ok, err: err } );
  31                                 };
  32                                 return api.getEditToken( useTokenToPost, err );
  33                         } else {
  34                                 // We do have a token, but it might be expired. So if it is 'bad' then
  35                                 // start over with a new token.
  36                                 params.token = cachedToken;
  37                                 getTokenIfBad = function ( code, result ) {
  38                                         if ( code === 'badtoken' ) {
  39                                                 // force a new token, clear any old one
  40                                                 cachedToken = null;
  41                                                 api.postWithEditToken( params, ok, err );
  42                                         } else {
  43                                                 err( code, result );
  44                                         }
  45                                 };
  46                                 return api.post( params, { ok: ok, err: getTokenIfBad } );
  47                         }
  48                 },
  49
  50                 /**
  51                  * Api helper to grab an edit token.
  52                  *
  53                  * @param {Function} [ok] Success callback
  54                  * @param {Function} [err] Error callback
  55                  * @return {jQuery.Promise}
  56                  * @return {Function} return.done
  57                  * @return {string} return.done.token Received token.
  58                  */
  59                 getEditToken: function ( ok, err ) {
  60                         var d = $.Deferred(),
  61                                 apiPromise;
  62                         // Backwards compatibility (< MW 1.20)
  63                         d.done( ok );
  64                         d.fail( err );
  65
  66                         apiPromise = this.get( {
  67                                         action: 'tokens',
  68                                         type: 'edit'
  69                                 }, {
  70                                         // Due to the API assuming we're logged out if we pass the callback-parameter,
  71                                         // we have to disable jQuery's callback system, and instead parse JSON string,
  72                                         // by setting 'jsonp' to false.
  73                                         // TODO: This concern seems genuine but no other module has it. Is it still
  74                                         // needed and/or should we pass this by default?
  75                                         jsonp: false
  76                                 } )
  77                                 .done( function ( data ) {
  78                                         var token;
  79                                         // If token type is not available for this user,
  80                                         // key 'edittoken' is missing or can contain Boolean false
  81                                         if ( data.tokens && data.tokens.edittoken ) {
  82                                                 token = data.tokens.edittoken;
  83                                                 cachedToken = token;
  84                                                 d.resolve( token );
  85                                         } else {
  86                                                 d.reject( 'token-missing', data );
  87                                         }
  88                                 } )
  89                                 .fail( d.reject );
  90
  91                         return d.promise( { abort: apiPromise.abort } );
  92                 },
  93
  94                 /**
  95                  * Create a new section of the page.
  96                  * @see #postWithEditToken
  97                  * @param {mw.Title|String} title Target page
  98                  * @param {string} header
  99                  * @param {string} message wikitext message
 100                  * @param {Function} [ok] Success handler
 101                  * @param {Function} [err] Error handler
 102                  * @return {jQuery.Promise}
 103                  */
 104                 newSection: function ( title, header, message, ok, err ) {
 105                         return this.postWithEditToken( {
 106                                 action: 'edit',
 107                                 section: 'new',
 108                                 format: 'json',
 109                                 title: title.toString(),
 110                                 summary: header,
 111                                 text: message
 112                         }, ok, err );
 113                 }
 114
 115          } );
 116
 117         /**
 118          * @class mw.Api
 119          * @mixins mw.Api.plugin.edit
 120          */
 121
 122 }( mediaWiki, jQuery ) );