// 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(cb, options) {

    if (cb == null) return;

    var settings = {
        cb: cb, // post changes to 
        increment: 1, // value to increment by
        maxvalue: 5,   // max number of stars
        curvalue: 0,    // number of selected stars       
        titles: ['No me Gusta', 'Pasable', 'Me Gusta','Muy Bueno', 'Excelente' ] ,
        cancel: false
    };

    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,
        cb: settings.cb
    });
    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="' + settings.titles[i-1] +'">' + 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() {


        settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;

        if (settings.maxvalue == 1) {
            settings.curvalue = (settings.curvalue == 0) ? 1 : 0;
            $(this).toggleClass('on');
            return false;
        }

        /*
        jQuery.post(container.url, {
            "rating": jQuery(this).children('a')[0].href.split('#')[1]
        });
        */
        if (typeof (settings.cb) == 'function') settings.cb(settings.curvalue);
        stars
            .unbind("click")
            .unbind("mouseover");
        return false;

    });

    // 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;
            /*
            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();
        },
        disable: function() {
            stars.removeClass('hover');
        }
    };
    event.reset();

    return (this);

};