NodeBeginnerBook/TOC.js at master · buro71a/NodeBeginnerBook · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
/*
---
description: TOC is a MooTools Plugin which turn a HTML headings into a Table of Content.

authors:
- Adrian Statescu (http://thinkphp.ro).

license:
- MIT-style license.

requires:
core/1.2.1: '*'

provides: [TOC]
...
*/

var TOC = new Class({

          /* public method - constructor of class initialize */

          initialize: function(elem) {

               this.toc = $(elem);

               if(!this.toc) {return};

               this.createToc();
          },

          /* private method */
          createToc: function() {

               var out = '<ul>';

               var nodes = this.getElementsByTagNamess('h2,h3,h4,h5');

               var weight, oldweight, nextweight;

               nodes.each(function(o,k){

                     var id = o.id;

                         if(id == '') {

                              id = 'head' + k;

                              o.id = id;
                         }

                      weight = o.nodeName.substr(1,1);

                      if(k>0 && weight>oldweight) {

                             out += '<ul>';
                      }

                      out += '<li><a href="#'+o.id+'">'+o.innerHTML+'</a>';

                         if(nodes[k+1]) {

                                nextweight = nodes[k+1].nodeName.substr(1,1);

                                if(weight > nextweight) {

                                     out += '</li></ul></li>';
                                }

                                if(weight == nextweight) {

                                     out += '</li>';
                                }
                         }//endif

                         oldweight = weight;

               });//end each nodes

               out += '</li></ul>';

               this.toc.set('html',this.toc.get('html') + out);

          },

          /* private method */
          getElementsByTagNamess: function(list,obj) {

               if (!obj) var obj = document;

                   var tagNames = list.split(',');

                   var resultArray = new Array();

                   for (var i=0;i<tagNames.length;i++) {

                          var tags = obj.getElementsByTagName(tagNames[i]);

                              for (var j=0;j<tags.length;j++) {

                                       resultArray.push(tags[j]);
                              }
                    }

                    var testNode = resultArray[0];

                    if (!testNode) return [];

                    if (testNode.sourceIndex) {

                          resultArray.sort(function (a,b) {

                                return a.sourceIndex - b.sourceIndex;
                           });
                     }

                     else if (testNode.compareDocumentPosition) {

                                 resultArray.sort(function (a,b) {

                                     return 3 - (a.compareDocumentPosition(b) & 6);

                                 });
                      }
               return resultArray;
          }
});//end class TOC