resources/mediawiki/mediawiki.toc.js

   1 /**
   2  * @private
   3  * @singleton
   4  * @class mw.toc
   5  */
   6 ( function ( mw, $ ) {
   7         'use strict';
   8
   9         // Table of contents toggle
  10         mw.hook( 'wikipage.content' ).add( function ( $content ) {
  11
  12                 /**
  13                  * Hide/show the table of contents element
  14                  *
  15                  * @param {jQuery} $toggleLink A jQuery object of the toggle link.
  16                  */
  17                 function toggleToc( $toggleLink ) {
  18                         var $tocList = $content.find( '#toc ul:first' );
  19
  20                         // This function shouldn't be called if there's no TOC,
  21                         // but just in case...
  22                         if ( $tocList.length ) {
  23                                 if ( $tocList.is( ':hidden' ) ) {
  24                                         $tocList.slideDown( 'fast' );
  25                                         $toggleLink.text( mw.msg( 'hidetoc' ) );
  26                                         $content.find( '#toc' ).removeClass( 'tochidden' );
  27                                         $.cookie( 'mw_hidetoc', null, {
  28                                                 expires: 30,
  29                                                 path: '/'
  30                                         } );
  31                                 } else {
  32                                         $tocList.slideUp( 'fast' );
  33                                         $toggleLink.text( mw.msg( 'showtoc' ) );
  34                                         $content.find( '#toc' ).addClass( 'tochidden' );
  35                                         $.cookie( 'mw_hidetoc', '1', {
  36                                                 expires: 30,
  37                                                 path: '/'
  38                                         } );
  39                                 }
  40                         }
  41                 }
  42
  43                 var $tocTitle, $tocToggleLink, hideTocCookie;
  44                 $tocTitle = $content.find( '#toctitle' );
  45                 $tocToggleLink = $content.find( '#togglelink' );
  46                 // Only add it if there is a TOC and there is no toggle added already
  47                 if ( $content.find( '#toc' ).length && $tocTitle.length && !$tocToggleLink.length ) {
  48                         hideTocCookie = $.cookie( 'mw_hidetoc' );
  49                         $tocToggleLink = $( '<a href="#" class="internal" id="togglelink"></a>' )
  50                                 .text( mw.msg( 'hidetoc' ) )
  51                                 .click( function ( e ) {
  52                                         e.preventDefault();
  53                                         toggleToc( $( this ) );
  54                                 } );
  55                         $tocTitle.append(
  56                                 $tocToggleLink
  57                                         .wrap( '<span class="toctoggle"></span>' )
  58                                         .parent()
  59                                                 .prepend( '&nbsp;[' )
  60                                                 .append( ']&nbsp;' )
  61                         );
  62
  63                         if ( hideTocCookie === '1' ) {
  64                                 toggleToc( $tocToggleLink );
  65                         }
  66                 }
  67         } );
  68
  69 }( mediaWiki, jQuery ) );