resources/src/mediawiki.special/mediawiki.special.userlogin.signup.js

   1 /*!
   2  * JavaScript for signup form.
   3  */
   4 ( function ( mw, $ ) {
   5         // When sending password by email, hide the password input fields.
   6         $( function () {
   7                 // Always required if checked, otherwise it depends, so we use the original
   8                 var $emailLabel = $( 'label[for="wpEmail"]' ),
   9                         originalText = $emailLabel.text(),
  10                         requiredText = mw.message( 'createacct-emailrequired' ).text(),
  11                         $createByMailCheckbox = $( '#wpCreateaccountMail' ),
  12                         $beforePwds = $( '.mw-row-password:first' ).prev(),
  13                         $pwds;
  14
  15                 function updateForCheckbox() {
  16                         var checked = $createByMailCheckbox.prop( 'checked' );
  17                         if ( checked ) {
  18                                 $pwds = $( '.mw-row-password' ).detach();
  19                                 $emailLabel.text( requiredText );
  20                         } else {
  21                                 if ( $pwds ) {
  22                                         $beforePwds.after( $pwds );
  23                                         $pwds = null;
  24                                 }
  25                                 $emailLabel.text( originalText );
  26                         }
  27                 }
  28
  29                 $createByMailCheckbox.on( 'change', updateForCheckbox );
  30                 updateForCheckbox();
  31         } );
  32
  33         // Check if the username is invalid or already taken
  34         $( function () {
  35                 var
  36                         // We need to hook to all of these events to be sure we are notified of all changes to the
  37                         // value of an <input type=text> field.
  38                         events = 'keyup keydown change mouseup cut paste focus blur',
  39                         $input = $( '#wpName2' ),
  40                         $statusContainer = $( '#mw-createacct-status-area' ),
  41                         api = new mw.Api(),
  42                         currentRequest;
  43
  44                 // Hide any present status messages.
  45                 function clearStatus() {
  46                         $statusContainer.slideUp( function () {
  47                                 $statusContainer
  48                                         .removeAttr( 'class' )
  49                                         .empty();
  50                         } );
  51                 }
  52
  53                 // Returns a promise receiving a { state:, username: } object, where:
  54                 // * 'state' is one of 'invalid', 'taken', 'ok'
  55                 // * 'username' is the validated username if 'state' is 'ok', null otherwise (if it's not
  56                 //   possible to register such an account)
  57                 function checkUsername( username ) {
  58                         // We could just use .then() if we didn't have to pass on .abort()…
  59                         var d, apiPromise;
  60
  61                         d = $.Deferred();
  62                         apiPromise = api.get( {
  63                                 action: 'query',
  64                                 list: 'users',
  65                                 ususers: username // '|' in usernames is handled below
  66                         } )
  67                                 .done( function ( resp ) {
  68                                         var userinfo = resp.query.users[0];
  69
  70                                         if ( resp.query.users.length !== 1 ) {
  71                                                 // Happens if the user types '|' into the field
  72                                                 d.resolve( { state: 'invalid', username: null } );
  73                                         } else if ( userinfo.invalid !== undefined ) {
  74                                                 d.resolve( { state: 'invalid', username: null } );
  75                                         } else if ( userinfo.userid !== undefined ) {
  76                                                 d.resolve( { state: 'taken', username: null } );
  77                                         } else {
  78                                                 d.resolve( { state: 'ok', username: username } );
  79                                         }
  80                                 } )
  81                                 .fail( d.reject );
  82
  83                         return d.promise( { abort: apiPromise.abort } );
  84                 }
  85
  86                 function updateUsernameStatus() {
  87                         var
  88                                 username = $.trim( $input.val() ),
  89                                 currentRequestInternal;
  90
  91                         // Abort any pending requests.
  92                         if ( currentRequest ) {
  93                                 currentRequest.abort();
  94                         }
  95
  96                         if ( username === '' ) {
  97                                 clearStatus();
  98                                 return;
  99                         }
 100
 101                         currentRequest = currentRequestInternal = checkUsername( username ).done( function ( info ) {
 102                                 var message;
 103
 104                                 // Another request was fired in the meantime, the result we got here is no longer current.
 105                                 // This shouldn't happen as we abort pending requests, but you never know.
 106                                 if ( currentRequest !== currentRequestInternal ) {
 107                                         return;
 108                                 }
 109                                 // If we're here, then the current request has finished, avoid calling .abort() needlessly.
 110                                 currentRequest = undefined;
 111
 112                                 if ( info.state === 'ok' ) {
 113                                         clearStatus();
 114                                 } else {
 115                                         if ( info.state === 'invalid' ) {
 116                                                 message = mw.message( 'noname' ).text();
 117                                         } else if ( info.state === 'taken' ) {
 118                                                 message = mw.message( 'userexists' ).text();
 119                                         }
 120
 121                                         $statusContainer
 122                                                 .attr( 'class', 'errorbox' )
 123                                                 .empty()
 124                                                 .append(
 125                                                         // Ugh…
 126                                                         // @todo Change the HTML structure in includes/templates/Usercreate.php
 127                                                         $( '<strong>' ).text( mw.message( 'createacct-error' ).text() ),
 128                                                         $( '<br>' ),
 129                                                         document.createTextNode( message )
 130                                                 )
 131                                                 .slideDown();
 132                                 }
 133                         } ).fail( function () {
 134                                 clearStatus();
 135                         } );
 136                 }
 137
 138                 $input.on( events, $.debounce( 250, updateUsernameStatus ) );
 139         } );
 140 }( mediaWiki, jQuery ) );