https://camaradediputados.gob.do/wp-content/themes/diputados/assets/js/jquery.nav.js?ver=2.2.1

1/*
2 * jQuery One Page Nav Plugin
3 * http://github.com/davist11/jQuery-One-Page-Nav
4 *
5 * Copyright (c) 2010 Trevor Davis (http://trevordavis.net)
6 * Dual licensed under the MIT and GPL licenses.
7 * Uses the same license as jQuery, see:
8 * http://jquery.org/license
9 *
10 * @version 3.0.0
11 *
12 * Example usage:
13 * $('#nav').onePageNav({
14 *   currentClass: 'current',
15 *   changeHash: false,
16 *   scrollSpeed: 750
17 * });
18 */
19
20;(function($, window, document, undefined){
21
22    // our plugin constructor
23    var OnePageNav = function(elem, options){
24        this.elem = elem;
25        this.$elem = $(elem);
26        this.options = options;
27        this.metadata = this.$elem.data('plugin-options');
28        this.$win = $(window);
29        this.sections = {};
30        this.didScroll = false;
31        this.$doc = $(document);
32        this.docHeight = this.$doc.height();
33    };
34
35    // the plugin prototype
36    OnePageNav.prototype = {
37        defaults: {
38            navItems: 'a',
39            currentClass: 'current',
40            changeHash: false,
41            easing: 'swing',
42            filter: '',
43            scrollSpeed: 750,
44            scrollThreshold: 0.5,
45            begin: false,
46            end: false,
47            scrollChange: false
48        },
49
50        init: function() {
51            // Introduce defaults that can be extended either
52            // globally or using an object literal.
53            this.config = $.extend({}, this.defaults, this.options, this.metadata);
54
55            this.$nav = this.$elem.find(this.config.navItems);
56
57            //Filter any links out of the nav
58            if(this.config.filter !== '') {
59                this.$nav = this.$nav.filter(this.config.filter);
60            }
61
62            //Handle clicks on the nav
63            this.$nav.on('click.onePageNav', $.proxy(this.handleClick, this));
64
65            //Get the section positions
66            this.getPositions();
67
68            //Handle scroll changes
69            this.bindInterval();
70
71            //Update the positions on resize too
72            this.$win.on('resize.onePageNav', $.proxy(this.getPositions, this));
73
74            return this;
75        },
76
77        adjustNav: function(self, $parent) {
78            self.$elem.find('.' + self.config.currentClass).removeClass(self.config.currentClass);
79            $parent.addClass(self.config.currentClass);
80        },
81
82        bindInterval: function() {
83            var self = this;
84            var docHeight;
85
86            self.$win.on('scroll.onePageNav', function() {
87                self.didScroll = true;
88            });
89
90            self.t = setInterval(function() {
91                docHeight = self.$doc.height();
92
93                //If it was scrolled
94                if(self.didScroll) {
95                    self.didScroll = false;
96                    self.scrollChange();
97                }
98
99                //If the document height changes
100                if(docHeight !== self.docHeight) {
101                    self.docHeight = docHeight;
102                    self.getPositions();
103                }
104            }, 250);
105        },
106
107        getHash: function($link) {
108            var href = $link.attr('href');
109            if(href){
110                return href.split('#')[1];
111            }
112            else{
113                return '';
114            }
115        },
116
117        getPositions: function() {
118            var self = this;
119            var linkHref;
120            var topPos;
121            var $target;
122
123            self.$nav.each(function() {
124                linkHref = self.getHash($(this));
125                $target = $('#' + linkHref);
126
127                if($target.length) {
128                    topPos = $target.offset().top;
129                    self.sections[linkHref] = Math.round(topPos);
130                }
131            });
132        },
133
134        getSection: function(windowPos) {
135            var returnValue = null;
136            var windowHeight = Math.round(this.$win.height() * this.config.scrollThreshold);
137
138            for(var section in this.sections) {
139                if((this.sections[section] - windowHeight) < windowPos) {
140                    returnValue = section;
141                }
142            }
143
144            return returnValue;
145        },
146
147        handleClick: function(e) {
148            var self = this;
149            var $link = $(e.currentTarget);
150            var $parent = $link.parent();
151            var newLoc = '#' + self.getHash($link);
152
153            if(!$parent.hasClass(self.config.currentClass)) {
154                //Start callback
155                if(self.config.begin) {
156                    self.config.begin();
157                }
158
159                //Change the highlighted nav item
160                self.adjustNav(self, $parent);
161
162                //Removing the auto-adjust on scroll
163                self.unbindInterval();
164
165                //Scroll to the correct position
166                self.scrollTo(newLoc, function() {
167                    //Do we need to change the hash?
168                    if(self.config.changeHash) {
169                        window.location.hash = newLoc;
170                    }
171
172                    //Add the auto-adjust on scroll back in
173                    self.bindInterval();
174
175                    //End callback
176                    if(self.config.end) {
177                        self.config.end();
178                    }
179                });
180            }
181
182            e.preventDefault();
183        },
184
185        scrollChange: function() {
186            var windowTop = this.$win.scrollTop();

187            var position = this.getSection(windowTop);
188            var $parent;
189
190            //If the position is set
191            if(position !== null) {
192                $parent = this.$elem.find('a[href$="#' + position + '"]').parent();
193
194                //If it's not already the current section
195                if(!$parent.hasClass(this.config.currentClass)) {
196                    //Change the highlighted nav item
197                    this.adjustNav(this, $parent);
198
199                    //If there is a scrollChange callback
200                    if(this.config.scrollChange) {
201                        this.config.scrollChange($parent);
202                    }
203                }
204            }
205        },
206
207        scrollTo: function(target, callback) {
208            var offset = $(target).offset().top;
209
210            $('html, body').animate({
211                scrollTop: offset
212            }, this.config.scrollSpeed, this.config.easing, callback);
213        },
214
215        unbindInterval: function() {
216            clearInterval(this.t);
217            this.$win.unbind('scroll.onePageNav');
218        }
219    };
220
221    OnePageNav.defaults = OnePageNav.prototype.defaults;
222
223    $.fn.onePageNav = function(options) {
224        return this.each(function() {
225            new OnePageNav(this, options).init();
226        });
227    };
228
229})( jQuery, window , document );