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-rw-r--r--library/tableofcontents/jquery.tableofcontents.js191
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+/*
+ TableOfContents Plugin for jQuery (by Doug Neiner)
+
+ Version: 0.8
+
+ Based on code and concept by Janko Jovanovic
+ in his article: http://www.jankoatwarpspeed.com/post/2009/08/20/Table-of-contents-using-jQuery.aspx
+
+ This plugin is offered under the MIT license.
+ (c) 2009 by Doug Neiner, http://dougneiner.com
+
+ Iclude in html like this (just an example)
+ <pre>
+ ---
+ <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script>
+ <script src="jquery.tableofcontents.min.js" type="text/javascript" charset="utf-8"></script>
+ <script type="text/javascript" charset="utf-8">
+ $(document).ready(function(){ $("#toc").tableOfContents(); });
+ </script>
+ </head>
+ <body>
+ <ul id="toc"></ul>
+ ...
+ </pre>
+ */
+(function($) {
+ $.TableOfContents = function(el, scope, options) {
+ var base = this;
+ base.$el = $(el);
+ base.el = el;
+ base.toc = "";
+ base.listStyle = null;
+ base.tags = [ "h1", "h2", "h3", "h4", "h5", "h6" ];
+ base.init = function() {
+ base.options = $.extend({}, $.TableOfContents.defaultOptions,
+ options);
+ if (typeof (scope) == "undefined" || scope == null)
+ scope = document.body;
+ base.$scope = $(scope);
+ var $first = base.$scope.find(base.tags.join(', '))
+ .filter(':first');
+ if ($first.length != 1)
+ return;
+ base.starting_depth = base.options.startLevel;
+ if (base.options.depth < 1)
+ base.options.depth = 1;
+ var filtered_tags = base.tags.splice(base.options.startLevel - 1,
+ base.options.depth);
+ base.$headings = base.$scope.find(filtered_tags.join(', '));
+ if (base.options.topLinks !== false) {
+ var id = $(document.body).attr('id');
+ if (id == "") {
+ id = base.options.topBodyId;
+ document.body.id = id
+ }
+ ;
+ base.topLinkId = id
+ }
+ ;
+ if (base.$el.is('ul')) {
+ base.listStyle = 'ul'
+ } else if (base.$el.is('ol')) {
+ base.listStyle = 'ol'
+ }
+ ;
+ base.buildTOC();
+ if (base.options.proportionateSpacing === true
+ && !base.tieredList()) {
+ base.addSpacing()
+ }
+ ;
+ return base
+ };
+ base.tieredList = function() {
+ return (base.listStyle == 'ul' || base.listStyle == 'ol')
+ };
+ base.buildTOC = function() {
+ base.current_depth = base.starting_depth;
+ base.$headings.each(function(i, element) {
+ var depth = this.nodeName.toLowerCase().substr(1, 1);
+ if (i > 0 || (i == 0 && depth != base.current_depth)) {
+ base.changeDepth(depth)
+ }
+ ;
+ base.toc += base.formatLink(this, depth, i) + "\n";
+ if (base.options.topLinks !== false)
+ base.addTopLink(this)
+ });
+ base.changeDepth(base.starting_depth, true);
+ if (base.tieredList())
+ base.toc = "<li>\n" + base.toc + "</li>\n";
+ base.$el.html(base.toc)
+ };
+ base.addTopLink = function(element) {
+ var text = (base.options.topLinks === true ? "Top"
+ : base.options.topLinks);
+ var $a = $(
+ "<a href='#" + base.topLinkId + "' class='"
+ + base.options.topLinkClass + "'></a>").html(text);
+ $(element).append($a)
+ };
+ base.formatLink = function(element, depth, index) {
+ var id = element.id;
+ if (id == "") {
+ id = base.buildSlug($(element).text());
+ element.id = id
+ }
+ ;
+ var a = "<a href='#" + id + "'";
+ if (!base.tieredList())
+ a += " class='" + base.depthClass(depth) + "'";
+ a += ">" + base.options.levelText.replace('%', $(element).text())
+ + '</a>';
+ return a
+ };
+ base.changeDepth = function(new_depth, last) {
+ if (last !== true)
+ last = false;
+ if (!base.tieredList()) {
+ base.current_depth = new_depth;
+ return true
+ }
+ ;
+ if (new_depth > base.current_depth) {
+ var opening_tags = [];
+ for ( var i = base.current_depth; i < new_depth; i++) {
+ opening_tags.push('<' + base.listStyle + '>' + "\n")
+ }
+ ;
+ var li = "<li>\n";
+ base.toc += opening_tags.join(li) + li
+ } else if (new_depth < base.current_depth) {
+ var closing_tags = [];
+ for ( var i = base.current_depth; i > new_depth; i--) {
+ closing_tags.push('</' + base.listStyle + '>' + "\n")
+ }
+ ;
+ base.toc += "</li>\n" + closing_tags.join('</li>' + "\n");
+ if (!last) {
+ base.toc += "</li>\n<li>\n"
+ }
+ } else {
+ if (!last) {
+ base.toc += "</li>\n<li>\n"
+ }
+ }
+ ;
+ base.current_depth = new_depth
+ };
+ base.buildSlug = function(text) {
+ text = text.toLowerCase().replace(/[^a-z0-9 -]/gi, '').replace(
+ / /gi, '-');
+ text = text.substr(0, 50);
+ return text
+ };
+ base.depthClass = function(depth) {
+ return base.options.levelClass.replace('%',
+ (depth - (base.starting_depth - 1)))
+ };
+ base.addSpacing = function() {
+ var start = base.$headings.filter(':first').position().top;
+ base.$headings.each(function(i, el) {
+ var $a = base.$el.find('a:eq(' + i + ')');
+ var pos = (($(this).position().top - start) / (base.$scope
+ .height() - start))
+ * base.$el.height();
+ $a.css({
+ position : "absolute",
+ top : pos
+ })
+ })
+ };
+ return base.init()
+ };
+ $.TableOfContents.defaultOptions = {
+ startLevel : 1,
+ depth : 3,
+ levelClass : "toc-depth-%",
+ levelText : "%",
+ topLinks : false,
+ topLinkClass : "toc-top-link",
+ topBodyId : "toc-top",
+ proportionateSpacing : false
+ };
+ $.fn.tableOfContents = function(scope, options) {
+ return this.each(function() {
+ var toc = new $.TableOfContents(this, scope, options);
+ delete toc
+ })
+ }
+})(jQuery); \ No newline at end of file