/*
 ### jQuery Star Rating Plugin v2.5 - 2008-09-10 ###
 * http://www.fyneworks.com/ - diego@fyneworks.com
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 ###
 Project: http://plugins.jquery.com/project/MultipleFriendlyStarRating
 Website: http://www.fyneworks.com/jquery/star-rating/
*//*
   Based on http://www.phpletter.com/Demo/Jquery-Star-Rating-Plugin/
 Original comments:
   This is hacked version of star rating created by <a href="http://php.scripts.psu.edu/rja171/widgets/rating.php">Ritesh Agrawal</a>
   It thansform a set of radio type input elements to star rating type and remain the radio element name and value,
   so could be integrated with your form. It acts as a normal radio button.
   modified by : Logan Cai (cailongqun[at]yahoo.com.cn)
*/

/*# AVOID COLLISIONS #*/
;if(window.jQuery) (function($){
/*# AVOID COLLISIONS #*/
   
   // default settings
   $.rating = {
      cancel: 'Cancel Rating',   // advisory title for the 'cancel' link
      cancelValue: '',           // value to submit when user click the 'cancel' link
      split: 0,                  // split the star into how many parts?
      
      // Width of star image in case the plugin can't work it out. This can happen if
      // the jQuery.dimensions plugin is not available OR the image is hidden at installation
      starWidth: 16,
      
      //NB.: These don't need to be defined (can be undefined/null) so let's save some code!
      //half:     false,         // just a shortcut to settings.split = 2
      //required: false,         // disables the 'cancel' button so user can only select one of the specified values
      //readOnly: false,         // disable rating plugin interaction/ values cannot be changed
      //focus:    function(){},  // executed when stars are focused
      //blur:     function(){},  // executed when stars are focused
      //callback: function(){},  // executed when a star is clicked
      
      // required properties:
      groups: {},// allows multiple star ratings on one page
      event: {// plugin event handlers
         fill: function(n, el, settings, state){ // fill to the current mouse position.
            //if(window.console) console.log(['fill', $(el), $(el).prevAll('.star_group_'+n), arguments]);
            this.drain(n);
            $(el).prevAll('.star_group_'+n).andSelf().addClass('star_'+(state || 'hover'));
            // focus handler, as requested by focusdigital.co.uk
            var lnk = $(el).children('a'); val = lnk.text();
            if(settings.focus) settings.focus.apply($.rating.groups[n].valueElem[0], [val, lnk[0]]);
         },
         drain: function(n, el, settings) { // drain all the stars.
            //if(window.console) console.log(['drain', $(el), $(el).prevAll('.star_group_'+n), arguments]);
            $.rating.groups[n].valueElem.siblings('.star_group_'+n).removeClass('star_on').removeClass('star_hover');
         },
         reset: function(n, el, settings){ // Reset the stars to the default index.
            if(!$($.rating.groups[n].current).is('.cancel'))
               $($.rating.groups[n].current).prevAll('.star_group_'+n).andSelf().addClass('star_on');
            // blur handler, as requested by focusdigital.co.uk
            var lnk = $(el).children('a'); val = lnk.text();
            if(settings.blur) settings.blur.apply($.rating.groups[n].valueElem[0], [val, lnk[0]]);
         },
         click: function(n, el, settings){ // Selected a star or cancelled
            $.rating.groups[n].current = el;
            var lnk = $(el).children('a'); val = lnk.text();
            // Set value
            $.rating.groups[n].valueElem.val(val);
            // Update display
            $.rating.event.drain(n, el, settings);
            $.rating.event.reset(n, el, settings);
            // click callback, as requested here: http://plugins.jquery.com/node/1655
            if(settings.callback) settings.callback.apply($.rating.groups[n].valueElem[0], [val, lnk[0]]);
         }      
      }// plugin events
   };
   
   $.fn.rating = function(instanceSettings){
      if(this.length==0) return this; // quick fail
      
      instanceSettings = $.extend(
         {}/* new object */,
         $.rating/* global settings */,
         instanceSettings || {} /* just-in-time settings */
      );
      
      // loop through each matched element
      this.each(function(i){
         
         var settings = $.extend(
            {}/* new object */,
            instanceSettings || {} /* current call settings */,
            ($.metadata? $(this).metadata(): ($.meta?$(this).data():null)) || {} /* metadata settings */
         );
         
         ////if(window.console) console.log([this.name, settings.half, settings.split], '#');
         
         // Generate internal control ID
         // - ignore square brackets in element names
         var n = (this.name || 'unnamed-rating').replace(/\[|\]/, "_");
   
         // Grouping
         if(!$.rating.groups[n]) $.rating.groups[n] = {count: 0};
         i = $.rating.groups[n].count; $.rating.groups[n].count++;
         
         // Accept readOnly setting from 'disabled' property
         $.rating.groups[n].readOnly = $.rating.groups[n].readOnly || settings.readOnly || $(this).attr('disabled');
         
         // Things to do with the first element...
         if(i == 0){
            // Create value element (disabled if readOnly)
            $.rating.groups[n].valueElem = $('<input type="hidden" name="' + n + '" value=""' + (settings.readOnly ? ' disabled="disabled"' : '') + '/>');
            // Insert value element into form
            $(this).before($.rating.groups[n].valueElem);
            
            if($.rating.groups[n].readOnly || settings.required){
               // DO NOT display 'cancel' button
            }
            else{
               // Display 'cancel' button
               //$(this).before(
               // $('<div class="cancel"><a title="' + settings.cancel + '">' + settings.cancelValue + '</a></div>')
               // .mouseover(function(){ $.rating.event.drain(n, this, settings); $(this).addClass('star_on'); })
               // .mouseout(function(){ $.rating.event.reset(n, this, settings); $(this).removeClass('star_on'); })
               // .click(function(){ $.rating.event.click(n, this, settings); })
               //);
            }
         }; // if (i == 0) (first element)
         
         // insert rating option right after preview element
         eStar = $('<div class="star"><a href="' + this.alt + '" title="' + (this.title || this.value) + '">' + this.value + '</a></div>');
         $(this).after(eStar);
         
         // Half-stars?
         if(settings.half) settings.split = 2;
         
         // Prepare division settings
         if(typeof settings.split=='number' && settings.split>0){
            var stw = ($.fn.width ? $(eStar).width() : 0) || settings.starWidth;
            var spi = (i % settings.split), spw = Math.floor(stw/settings.split);
            $(eStar)
            // restrict star's width and hide overflow (already in CSS)
            .width(spw)
            // move the star left by using a negative margin
            // this is work-around to IE's stupid box model (position:relative doesn't work)
            .find('a').css({ 'margin-left':'-'+ (spi*spw) +'px' })
         };
         
         // Remember group name so controls within the same container don't get mixed up
         $(eStar).addClass('star_group_'+n);
         
         // readOnly?
         if($.rating.groups[n].readOnly)//{ //save a byte!
            // Mark star as readOnly so user can customize display
            $(eStar).addClass('star_readonly');
         //}  //save a byte!
         else//{ //save a byte!
            $(eStar)
            // Enable hover css effects
            .addClass('star_live')
            // Attach mouse events
            .mouseover(function(){ $.rating.event.drain(n, this, settings); $.rating.event.fill(n, this, settings, 'hover'); })
            .mouseout(function(){ $.rating.event.drain(n, this, settings); $.rating.event.reset(n, this, settings); })
            .click(function(){ $.rating.event.click(n, this, settings); });
         //}; //save a byte!
         
         ////if(window.console) console.log(['###', n, this.checked, $.rating.groups[n].initial]);
         if(this.checked) $.rating.groups[n].current = eStar;
         
         //remove this checkbox
         $(this).remove();
         
         // reset display if last element
         if(i + 1 == this.length) $.rating.event.reset(n, this, settings);
      
      }); // each element
         
      // initialize groups...
      for(n in $.rating.groups)//{ not needed, save a byte!
         (function(c, v, n){ if(!c) return;
            $.rating.event.fill(n, c, instanceSettings || {}, 'on');
            $(v).val($(c).children('a').text());
         })
         ($.rating.groups[n].current, $.rating.groups[n].valueElem, n);
      //}; not needed, save a byte!
      
      return this; // don't break the chain...
   };
   
   
   
   /*
      ### Default implementation ###
      The plugin will attach itself to file inputs
      with the class 'multi' when the page loads
   */
   $(function(){ $('input[@type=radio].star').rating(); });
   
   
   
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})(jQuery);
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