// JavaScript Document
/*************************************************
 Star Rating System
 First Version: 21 November, 2006
 Second Version: 17 May, 2007
 Author: Ritesh Agrawal (http://php.scripts.psu.edu/rja171/widgets/rating.php)
 email: ragrawal [at] gmail (dot) com
 Inspiration: Will Stuckey's star rating system (http://sandbox.wilstuckey.com/jquery-ratings/)
 Half-Star Addition: Karl Swedberg
 Demonstration: http://examples.learningjquery.com/rating/
 Usage: $('#rating').rating('url-to-post.php', {maxvalue:5, curvalue:0});

 arguments
 url : required -- post changes to 
 options
 increment : 1, // value to increment by
 maxvalue: number of stars
 curvalue: number of selected stars


 ************************************************/

jQuery.fn.rating = function(inputId, options) {

	if (inputId == null)
		return;

	var settings = {
		inputId : inputId, // post changes to 
		increment : 1, // value to increment by
		maxvalue : 5, // max number of stars
		curvalue : 0
	// number of selected stars
	};

	if (options) {
		jQuery.extend(settings, options);
	}
	;
	jQuery.extend(settings, {
		cancel : (settings.maxvalue > 1) ? true : false
	});

	var container = jQuery(this);

	jQuery.extend(container, {
		averageRating : settings.curvalue,
		inputId : settings.inputId
	});
	settings.increment = (settings.increment < .75) ? .5 : 1;
	var s = 0;
	for ( var i = 0; i <= settings.maxvalue; i++) {
		if (i == 0) {
			if (settings.cancel == true) {
				var div = '<div class="cancel"><a href="#0" title="Cancel Rating">Cancel Rating</a></div>';
				container.empty().append(div);
			}
		} else {
			var $div = $('<div class="star"></div>').append(
					'<a href="#' + i + '" title="Give it ' + i + '/'
							+ settings.maxvalue + '">' + i + '</a>').appendTo(
					container);
			if (settings.increment == .5) {
				if (s % 2) {
					$div.addClass('star-left');
				} else {
					$div.addClass('star-right');
				}
			}
		}
		i = i - 1 + settings.increment;
		s++;
	}

	var stars = jQuery(container).children('.star');
	var cancel = jQuery(container).children('.cancel');

	stars.mouseover(function() {
		event.drain();
		event.fill(this);
	}).mouseout(function() {
		event.drain();
		event.reset();
	}).focus(function() {
		event.drain();
		event.fill(this);
	}).blur(function() {
		event.drain();
		event.reset();
	});

	stars.click(function() {
		if (settings.cancel == true) {
			settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;
			$('#' + container.inputId).val(settings.curvalue);
			/*jQuery.post(container.url, {
				"rating" : jQuery(this).children('a')[0].href.split('#')[1]

			});*/
			return false;
		} else if (settings.maxvalue == 1) {
			settings.curvalue = (settings.curvalue == 0) ? 1 : 0;
			$(this).toggleClass('on');
			$('#' + container.inputId).val(settings.curvalue);
			/*jQuery.post(container.url, {
				"rating" : jQuery(this).children('a')[0].href.split('#')[1]
			});*/
			return false;
		}
		return true;

	});

	// cancel button events
	if (cancel) {
		cancel.mouseover(function() {
			event.drain();
			jQuery(this).addClass('on');
		}).mouseout(function() {
			event.reset();
			jQuery(this).removeClass('on');
		}).focus(function() {
			event.drain();
			jQuery(this).addClass('on');
		}).blur(function() {
			event.reset();
			jQuery(this).removeClass('on');
		});

		// click events.
		cancel.click(function() {
			event.drain();
			settings.curvalue = 0;
			$('#' + container.inputId).val(settings.curvalue);
			/*jQuery.post(container.url, {
				"rating" : jQuery(this).children('a')[0].href.split('#')[1]
			});*/
			return false;
		});
	}

	var event = {
		fill : function(el) { // fill to the current mouse position.
			var index = stars.index(el) + 1;
			stars.children('a').css('width', '100%').end().slice(0, index)
					.addClass('hover').end();
		},
		drain : function() { // drain all the stars.
			stars.filter('.on').removeClass('on').end().filter('.hover')
					.removeClass('hover').end();
		},
		reset : function() { // Reset the stars to the default index.
			stars.slice(0, settings.curvalue / settings.increment).addClass(
					'on').end();
		}
	};
	event.reset();

	return (this);

};