www.fsf.org/20131028/files/static.fsf.org/plone2012/toc.js

   1
   2 /* - toc.js - */
   3 /* Creates table of contents for pages for h[1234] */
   4
   5 jQuery(function($) {
   6     var dest, content, location, stack, oltoc, numdigits, wlh, target,
   7         targetOffset;
   8
   9     dest = $('dl.toc dd.portletItem');
  10     content = $('#region-content,#content');
  11     if (!content || !dest.length) {return;}
  12
  13     dest.empty();
  14
  15     location = window.location.href;
  16     if (window.location.hash) {
  17         location = location.substring(0, location.lastIndexOf(window.location.hash));
  18     }
  19     stack = [];
  20     // Get headers in document order
  21     $(content).find('*').not('.comment > h3').filter(function() { return (/^h[1234]$/).test(this.tagName.toLowerCase()); })
  22         .not('.documentFirstHeading').each(function(i) {
  23         var level, ol, li;
  24
  25         level = this.nodeName.charAt(1);
  26         // size the stack to the current level
  27         while (stack.length < level) {
  28             ol = $('<ol>');
  29             if (stack.length) {
  30                 li = $(stack[stack.length - 1]).children('li:last');
  31                 if (!li.length) {
  32                     // create a blank li for cases where, e.g., we have a subheading before any headings
  33                     li = $('<li>').appendTo($(stack[stack.length - 1]));
  34                 }
  35                 li.append(ol);
  36             }
  37             stack.push(ol);
  38         }
  39         while (stack.length > level) {stack.pop();}
  40
  41         $(this).before($('<a name="section-' + i + '" />'));
  42         $('<li>').append(
  43             $('<a />').attr('href', location + '#section-' + i)
  44                     .text($(this).text()))
  45             .appendTo($(stack[stack.length - 1]));
  46     });
  47
  48     if (stack.length) {
  49         var oltoc = $(stack[0]);
  50         // first level is a level with at least two entries #11160
  51         var i = 1;
  52         while(oltoc.children('li').length == 1){
  53             oltoc = $(stack[i]);
  54             i += 1;
  55         }
  56
  57         if (i <= stack.length) {
  58             $('dl.toc').show();
  59         }
  60
  61         numdigits = oltoc.children().length.toString().length;
  62         //Use a clever class name to add margin that's MUCH easier to customize
  63         oltoc.addClass("TOC"+numdigits+"Digit");
  64         dest.append(oltoc);
  65
  66         //scroll to element now.
  67         wlh = window.location.hash;
  68         if (wlh) {
  69             target = $(wlh);
  70             target = target.length && target
  71                 || $('[name=' + wlh.slice(1) +']');
  72             targetOffset = target.offset();
  73             if (targetOffset) {
  74                 $('html,body').animate({scrollTop: targetOffset.top}, 0);
  75             }
  76         }
  77     }
  78 });
  79