resources/src/mediawiki.action/mediawiki.action.edit.stash.js

   1 /*!
   2  * Scripts for pre-emptive edit preparing on action=edit
   3  */
   4 ( function ( mw, $ ) {
   5         $( function () {
   6                 var idleTimeout = 4000,
   7                         api = new mw.Api(),
   8                         pending = null,
   9                         $form = $( '#editform' ),
  10                         $text = $form.find( '#wpTextbox1' ),
  11                         data = {},
  12                         timer = null;
  13
  14                 function stashEdit( token ) {
  15                         data = $form.serializeObject();
  16
  17                         pending = api.post( {
  18                                 action: 'stashedit',
  19                                 token: token,
  20                                 title: mw.config.get( 'wgPageName' ),
  21                                 section: data.wpSection,
  22                                 sectiontitle: '',
  23                                 text: data.wpTextbox1,
  24                                 contentmodel: data.model,
  25                                 contentformat: data.format,
  26                                 baserevid: data.parentRevId
  27                         } );
  28                 }
  29
  30                 /* Has the edit body text changed since the last stashEdit() call? */
  31                 function isChanged() {
  32                         // Normalize line endings to CRLF, like $.fn.serializeObject does.
  33                         var newText = $text.val().replace( /\r?\n/g, '\r\n' );
  34                         return newText !== data.wpTextbox1;
  35                 }
  36
  37                 function onEditChanged() {
  38                         if ( !isChanged() ) {
  39                                 return;
  40                         }
  41
  42                         // If a request is in progress, abort it; its payload is stale.
  43                         if ( pending ) {
  44                                 pending.abort();
  45                         }
  46
  47                         api.getToken( 'edit' ).then( stashEdit );
  48                 }
  49
  50                 function onKeyPress( e ) {
  51                         // Ignore keystrokes that don't modify text, like cursor movements.
  52                         // See <http://stackoverflow.com/q/2284844>.
  53                         if ( e.which === 0 ) {
  54                                 return;
  55                         }
  56
  57                         clearTimeout( timer );
  58
  59                         if ( pending ) {
  60                                 pending.abort();
  61                         }
  62
  63                         timer = setTimeout( onEditChanged, idleTimeout );
  64                 }
  65
  66                 // We don't attempt to stash new section edits because in such cases
  67                 // the parser output varies on the edit summary (since it determines
  68                 // the new section's name).
  69                 if ( $form.find( 'input[name=wpSection]' ).val() === 'new' ) {
  70                         return;
  71                 }
  72
  73                 $text.on( { change: onEditChanged, keypress: onKeyPress } );
  74
  75         } );
  76 }( mediaWiki, jQuery ) );