// 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(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
    idvalue   : 0  // article id
  };
	
  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"></div>')
        .append('<a href="#'+i+'" title="Click to add a rating of ' + i + '">' + 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++;
  }
	
// Start observers

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

 if( jQuery(container).parent().parent().parent().parent().parent().parent().attr('class') != 'content clear-block scroll-area' ) {
  	
    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, {
          "value": jQuery(this).children('a')[0].href.split('#')[1],
          "id"   : settings.idvalue
        
        },
              function(returnData){
                $(this).parent().parent().find(".rating-count").text(returnData);
              }
        );
        
        // Update Ratings Count      
        ratingCount = $(this).parent().parent().find(".rating-count").text();
        var newCount = Number(ratingCount) + 1;
        $(this).parent().parent().find(".rating-count").text(newCount);      
        $(this).parent().parent().find(".rating-count").removeAttr('class');
  
              
  			return false;
  			
  		} else if (settings.maxvalue == 1) {
  			settings.curvalue = (settings.curvalue == 0) ? 1 : 0;
  			$(this).toggleClass('on');
  			jQuery.post(container.url, {
          "value": jQuery(this).children('a')[0].href.split('#')[1],
          "id"   : settings.idvalue 
        });
  			return false;
  		}
  		return true;
  			
    });
  
  }

// END observers

  // 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();
	
	return(this);	

};