// JavaScript Document

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

Star Rating System

First Version: 21 November, 2006

Author: Ritesh Agrawal

Inspriation: Will Stuckey's star rating system (http://sandbox.wilstuckey.com/jquery-ratings/)

Demonstration: http://php.scripts.psu.edu/rja171/widgets/rating.php

Usage: $('#rating').rating('www.url.to.post.com', {maxvalue:5, curvalue:0});



arguments

url : required -- post changes to 

options

	maxvalue: number of stars

	curvalue: number of selected stars

	



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



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

	

	if(url == null) return;

	

	var settings = {

        url       : url, // post changes to 

        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,

            url: settings.url

        });



	for(var i= 0; i <= settings.maxvalue ; i++){

		var size = i

        if (i > 0) {

             var div = '<div class="star"><a href="#'+i+'" title="Give it '+i+'/'+size+'">'+i+'</a></div>';

			 container.append(div);



        }

 

		



	}

	

	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) + 1;

            jQuery.post(container.url, {

                "rating": jQuery(this).children('a')[0].href.split('#')[1] 

            }, function (data){

		if(data.indexOf("ERRO:") == -1 ){

			var spl = data.split("-:-");

			var srated = mulDaghan('<img src="rate/star3.gif">', parseInt(spl[0]));

			var snrated = 5 -  parseInt(spl[0]);

			if(snrated < 5){

				snrated = mulDaghan('<img src="rate/star4.gif">', parseInt(snrated));

			}else{

				snrated = "";

			}



			jQuery("#rate1")[0].innerHTML = srated + snrated;

			jQuery("#rate1")[0].className="nepia";

			jQuery("#votos")[0].innerHTML = '&nbsp;&nbsp;Votos:&nbsp;' + spl[1];



		}else{

			alert(data);



		}

		

		});

			return false;

		}

		else if(settings.maxvalue == 1){

			settings.curvalue = (settings.curvalue == 0) ? 1 : 0;

			$(this).toggleClass('on');

			jQuery.post(container.url, {

                "rating": jQuery(this).children('a')[0].href.split('#')[1] 

            }, function(data){alert(data);});

			return false;

		}

		return true;

			

    });



        

	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).addClass('on').end();

		}

	}        

	event.reset();

	

	return(this);	



}



function mulDaghan(str,count){

    if(count==0) return '';

    var binaryCount = count.toString(2);

    var numDegree = binaryCount.length;

    var resultStr='';

    for(var i=0; i<numDegree; i++){

        resultStr+=resultStr; // for both 0 and 1

        if(binaryCount.charAt(i) == '1'){

            resultStr+=str;

        }

    }

    return resultStr;

}