1/*
2 * Copyright (C) 2012 PrimeBox (info@primebox.co.uk)
3 *
4 * This work is licensed under the Creative Commons
5 * Attribution 3.0 Unported License. To view a copy
6 * of this license, visit
7 * http://creativecommons.org/licenses/by/3.0/.
8 *
9 * Documentation available at:
10 * http://www.primebox.co.uk/projects/cookie-bar/
11 *
12 * When using this software you use it at your own risk. We hold
13 * no responsibility for any damage caused by using this plugin
14 * or the documentation provided.
15 */
16(function($){
17	$.cookieBar = function(options,val){
18		if(options=='cookies'){
19			var doReturn = 'cookies';
20		}else if(options=='set'){
21			var doReturn = 'set';
22		}else{
23			var doReturn = false;
24		}
25		var defaults = {
26			message: 'We use cookies to track usage and preferences.', //Message displayed on bar
27			acceptButton: true, //Set to true to show accept/enable button
28			acceptText: 'I Understand', //Text on accept/enable button
29			acceptFunction: function(cookieValue){if(cookieValue!='enabled' && cookieValue!='accepted') window.location = window.location.href;}, //Function to run after accept
30			declineButton: false, //Set to true to show decline/disable button
31			declineText: 'Disable Cookies', //Text on decline/disable button
32			declineFunction: function(cookieValue){if(cookieValue=='enabled' || cookieValue=='accepted') window.location = window.location.href;}, //Function to run after decline
33			policyButton: false, //Set to true to show Privacy Policy button
34			policyText: 'Privacy Policy', //Text on Privacy Policy button
35			policyURL: '/privacy-policy/', //URL of Privacy Policy
36			autoEnable: true, //Set to true for cookies to be accepted automatically. Banner still shows
37			acceptOnContinue: false, //Set to true to accept cookies when visitor moves to another page
38			acceptOnScroll: false, //Set to true to accept cookies when visitor scrolls X pixels up or down
39			acceptAnyClick: false, //Set to true to accept cookies when visitor clicks anywhere on the page
40			expireDays: 365, //Number of days for cookieBar cookie to be stored for
41			renewOnVisit: false, //Renew the cookie upon revisit to website
42			forceShow: false, //Force cookieBar to show regardless of user cookie preference
43			effect: 'slide', //Options: slide, fade, hide
44			element: 'body', //Element to append/prepend cookieBar to. Remember "." for class or "#" for id.
45			append: false, //Set to true for cookieBar HTML to be placed at base of website. Actual position may change according to CSS
46			fixed: false, //Set to true to add the class "fixed" to the cookie bar. Default CSS should fix the position
47			bottom: false, //Force CSS when fixed, so bar appears at bottom of website
48			zindex: '', //Can be set in CSS, although some may prefer to set here
49			domain: String(window.location.hostname), //Location of privacy policy
50			referrer: String(document.referrer) //Where visitor has come from
51		};
52		var options = $.extend(defaults,options);
53
54		//Sets expiration date for cookie
55		var expireDate = new Date();
56		expireDate.setTime(expireDate.getTime()+(options.expireDays*86400000));
57		expireDate = expireDate.toGMTString();
58
59		var cookieEntry = 'cb-enabled={value}; expires='+expireDate+'; path=/';
60
61		//Retrieves current cookie preference
62		var i,cookieValue='',aCookie,aCookies=document.cookie.split('; ');
63		for (i=0;i<aCookies.length;i++){
64			aCookie = aCookies[i].split('=');
65			if(aCookie[0]=='cb-enabled'){
66    			cookieValue = aCookie[1];
67			}
68		}
69		//Sets up default cookie preference if not already set
70		if(cookieValue=='' && doReturn!='cookies' && options.autoEnable){
71			cookieValue = 'enabled';
72			document.cookie = cookieEntry.replace('{value}','enabled');
73		}else if((cookieValue=='accepted' || cookieValue=='declined') && doReturn!='cookies' && options.renewOnVisit){
74			document.cookie = cookieEntry.replace('{value}',cookieValue);
75		}
76		if(options.acceptOnContinue){
77			if(options.referrer.indexOf(options.domain)>=0 && String(window.location.href).indexOf(options.policyURL)==-1 && doReturn!='cookies' && doReturn!='set' && cookieValue!='accepted' && cookieValue!='declined'){
78				doReturn = 'set';
79				val = 'accepted';
80			}
81		}
82		if(doReturn=='cookies'){
83			//Returns true if cookies are enabled, false otherwise
84			if(cookieValue=='enabled' || cookieValue=='accepted'){
85				return true;
86			}else{
87				return false;
88			}
89		}else if(doReturn=='set' && (val=='accepted' || val=='declined')){
90			//Sets value of cookie to 'accepted' or 'declined'
91			document.cookie = cookieEntry.replace('{value}',val);
92			if(val=='accepted'){
93				return true;
94			}else{
95				return false;
96			}
97		}else{
98			//Sets up enable/accept button if required
99			var message = options.message.replace('{policy_url}',options.policyURL);
100
101			if(options.acceptButton){
102				var acceptButton = '<a href="" class="cb-enable">'+options.acceptText+'</a>';
103			}else{
104				var acceptButton = '';
105			}
106			//Sets up disable/decline button if required
107			if(options.declineButton){
108				var declineButton = '<a href="" class="cb-disable">'+options.declineText+'</a>';
109			}else{
110				var declineButton = '';
111			}
112			//Sets up privacy policy button if required
113			if(options.policyButton){
114				var policyButton = '<a href="'+options.policyURL+'" class="cb-policy">'+options.policyText+'</a>';
115			}else{
116				var policyButton = '';
117			}
118			//Whether to add "fixed" class to cookie bar
119			if(options.fixed){
120				if(options.bottom){
121					var fixed = ' class="fixed bottom"';
122				}else{
123					var fixed = ' class="fixed"';
124				}
125			}else{
126				var fixed = '';
127			}
128			if(options.zindex!=''){
129				var zindex = ' style="z-index:'+options.zindex+';"';
130			}else{
131				var zindex = '';
132			}
133
134			//Displays the cookie bar if arguments met
135			if(options.forceShow || cookieValue=='enabled' || cookieValue==''){
136				if(options.append){
137					$(options.element).append('<div id="cookie-bar"'+fixed+zindex+'><p>'+message+'</p><p>'+acceptButton+declineButton+policyButton+'</p></div>');
138				}else{
139					$(options.element).prepend('<div id="cookie-bar"'+fixed+zindex+'><p>'+message+'</p><p>'+acceptButton+declineButton+policyButton+'</p></div>');
140				}
141			}
142
143			var removeBar = function(func){
144				if(options.acceptOnScroll) $(document).off('scroll');
145				if(typeof(func)==='function') func(cookieValue);
146				if(options.effect=='slide'){
147					$('#cookie-bar').slideUp(300,function(){$('#cookie-bar').remove();});
148				}else if(options.effect=='fade'){
149					$('#cookie-bar').fadeOut(300,function(){$('#cookie-bar').remove();});
150				}else{
151					$('#cookie-bar').hide(0,function(){$('#cookie-bar').remove();});
152				}
153				$(document).unbind('click',anyClick);
154			};
155			var cookieAccept = function(){
156				document.cookie = cookieEntry.replace('{value}','accepted');
157				removeBar(options.acceptFunction);
158			};
159			var cookieDecline = function(){
160				var deleteDate = new Date();
161				deleteDate.setTime(deleteDate.getTime()-(864000000));
162				deleteDate = deleteDate.toGMTString();
163				aCookies=document.cookie.split('; ');
164				for (i=0;i<aCookies.length;i++){
165					aCookie = aCookies[i].split('=');
166					if(aCookie[0].indexOf('_')>=0){
167						document.cookie = aCookie[0]+'=0; expires='+deleteDate+'; domain='+options.domain.replace('www','')+'; path=/';
168					}else{
169						document.cookie = aCookie[0]+'=0; expires='+deleteDate+'; path=/';
170					}
171				}
172				document.cookie = cookieEntry.replace('{value}','declined');
173				removeBar(options.declineFunction);
174			};
175			var anyClick = function(e){
176				if(!$(e.target).hasClass('cb-policy')) cookieAccept();
177			};
178
179			$('#cookie-bar .cb-enable').click(function(){cookieAccept();return false;});
180			$('#cookie-bar .cb-disable').click(function(){cookieDecline();return false;});
181			if(options.acceptOnScroll){
182				var scrollStart = $(document).scrollTop(),scrollNew,scrollDiff;
183				$(document).on('scroll',function(){
184					scrollNew = $(document).scrollTop();
185					if(scrollNew>scrollStart){
186						scrollDiff = scrollNew - scrollStart;
187					}else{
188						scrollDiff = scrollStart - scrollNew;
189					}
190					if(scrollDiff>=Math.round(options.acceptOnScroll)) cookieAccept();
191				});
192			}
193			if(options.acceptAnyClick){
194				$(document).bind('click',anyClick);
195			}
196		}
197	};
198})(jQuery);