// 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)
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(url, options) {
	
	if(url == null) return;
	
	var settings = {
    url : url, // post changes to 
    increment : 1, // value to increment by
    maxvalue  : 5,   // max number of stars
    curvalue  : 0,    // number of selected stars
	starid 		:0,
	allowrating : 1,
	rateId		: 'hidrate'
  };
	
  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
  });
  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"><input type="hidden" id="hid'+i+'" name="hid'+i+'" value="'+settings.starid+'"></div>')
        .append('<a class="hovereffect" 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++;
  }	
  
  //alert(jQuery(this).children('hidrate'+settings.starid).val())
  var stars = jQuery(container).children('.star');
  var cancel = jQuery(container).children('.cancel');

  if(settings.allowrating){
	  
	  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;
		  /*jQuery.post(container.url, {
			"rating": jQuery(this).children('a')[0].href.split('#')[1],
			"id" : jQuery(this).children('input').val()
		  
		  });*/
		  jQuery("#"+settings.rateId+settings.starid).val(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');
				jQuery.post(container.url, {
			"rating": jQuery(this).children('a')[0].href.split('#')[1],
			"id" : jQuery(this).children('input').val()
		  });
				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;
      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();
	
	if(!settings.allowrating){		
		jQuery(container).children(".star").children("a").removeClass('hovereffect');
	}

	return(this);	

};