/**

 * jQuery Ajax Rater Plugin

 *

 * This rater is based on the code Ritesh Agrawal did. Unfortunatly his CSS and the hover technique breaks in some browsers.

 * So i thought, why not use the best CSS star-rater known to man kind and throw it in the mix.

 * I have used the CSS and technique from Komodo Media since it is stable and tested on many, many browsers.

 *

 * This rater compared, has no cancel button. But i think we can live with that :)

 * To avoid conflicts i have changed the function name.

 * 

 * Licensed under The MIT License

 * 

 * @version     1.0

 * @mod         Customized by DDM

 * @since       03.01.2007

 * @author      Kjell Bublitz <m3nt0r.de@gmail.com

 * @link        http://www.m3nt0r.de/devel/raterDemo/ Demonstration and Documentation

 * @link        http://php.scripts.psu.edu/rja171/widgets/rating.php Based on Ritesh Agrawal Star Rating System

 * @link        http://komodomedia.com/blog/index.php/2007/01/20/css-star-rating-redux/ The Komodo Media CSS Rater Blogpost

 * @license     http://www.opensource.org/licenses/mit-license.php MIT 

 * @package     jQuery Plugins

 * @subpackage  Rater

 */ 



/**

 * Usage: $('#rating').rater('your_servlet', {style:'basic', maxvalue:5, curvalue:0});

 *  

 * @param url The address you want to post the result to. 

 * @param options The style and value attributes

 *

 * Valid options:s

 * ---------------------------------------

 *       style:       'basic', 'inline' OR 'small'

 *       maxvalue:    the maximum value / number of stars

 *       curvalue:    the initial value / selected stars

 *       sticky:      boolean true/false

 *       disable:     boolean true/false disable selection

 */ 

jQuery.fn.rater = function(options)

{

	var settings = {

		url            : null,  // post changes to 
		
		style		   : 'small',

		maxvalue       : 5,    // max number of stars

		starwidth      : 25,

		smallstarwidth : 10,

		curvalue       : 0,    // number of selected stars

		disable        : false,  // disable selection

		callback       : function(){},

		result         : 'star-rating-result' // selector to display result

	};

	

	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 });



	if(!settings.style || settings.style == null || settings.style == 'basic') {

		var raterwidth = settings.maxvalue * settings.starwidth;

		var ratingparent = '<ul class="star-rating" style="width:'+raterwidth+'px">';

	}

	if(settings.style == 'small') {

		var raterwidth = settings.maxvalue * settings.smallstarwidth;

		var ratingparent = '<ul class="star-rating small-star" style="width:'+raterwidth+'px">';

	}

	if(settings.style == 'inline') {

		var raterwidth = settings.maxvalue * settings.smallstarwidth;

		var ratingparent = '<span class="inline-rating"><ul class="star-rating small-star" style="width:'+raterwidth+'px">';

	}

	container.append(ratingparent);

	

	// create rater

	var starWidth, starIndex, listitems = '';

	var curvalueWidth = Math.floor(100 / settings.maxvalue * settings.curvalue);

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

		if (i == 0) {

			listitems+='<li class="current-rating" style="width:'+curvalueWidth+'%;">'+settings.curvalue+'/'+settings.maxvalue+'</li>';

		} else {

			starWidth = Math.floor(100 / settings.maxvalue * i);

			starIndex = (settings.maxvalue - i) + 2;

			if (settings.disable)

			{

				listitems+='<li class="star"></li>';

			} else {

				listitems+='<li class="star"><a href="#'+i+'" title="'+i+'/'+settings.maxvalue +'" style="width:'+starWidth+'%;z-index:'+starIndex+'">'+i+'</a></li>';

			}

		}

	}

	container.find('.star-rating').append(listitems); // i am using find here, because the span wrapped in the small style would break children()



	if(settings.maxvalue > 1) // add a container for the ajax result

	{

		container.append('<span class="'+settings.result+'"></span>'); 

	}

	var stars = jQuery(container).find('.star-rating').children('.star');

	stars.click(function()

	{

		if(settings.maxvalue == 1) // on / off

		{

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

			jQuery(container).find('.star-rating').children('.current-rating').css({width:(settings.curvalue*100)+'%'});

			jQuery.post(container.url, { "rating": settings.curvalue });

			return false;

		}

		else

		{

			settings.curvalue = stars.index(this) + 1;

			raterValue = jQuery(this).children('a')[0].href.split('#')[1];

			settings.callback(raterValue);

			if (settings.sticky)

			{

				jQuery(container).find('.star-rating').children('.current-rating').css({width:(Math.floor(100 / settings.maxvalue * raterValue))+'%'});

			}

			if (container.url != null)

			{

				jQuery.post(container.url, { "rating": raterValue }, function(response){

					container.children('.'+settings.result).html(response);

				});

			}

			return false;

		}

		return true;

	});



	return this; // strict warning: anonymous function does not always return a value. fix?

}