/*
 ### jQuery Star Rating Plugin v2.4 - 2008-07-15 ###
 * 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: 'Not Applicable',   // advisory title for the 'cancel' link
        cancelValue: '0',           // 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(){
            // remove validation message if present
            validation = $(this).parent().parent().children("label.error");
            if (validation.length != 0)
                $(validation[0]).remove(); 
        },
        
        // 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.
                var lnk = $(el).children('a'); val = lnk.text();
                // if(window.console) console.log(['fill', $(el), $(el).prevAll('.star_group_'+n), arguments]);
                this.drain(n);
                if( val == '0' )
                    $(el).prevAll('.star_group_'+n).andSelf().addClass('star_'+(state || 'hover'));
                else
                    $(el).prevAll('.star_group_'+n).andSelf().not('.cancel').addClass('star_'+(state || 'hover'));
                // focus handler, as requested by focusdigital.co.uk
                if(settings.focus) settings.focus.apply($.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.
                var lnk = $(el).children('a'); val = lnk.text();
                if( val == '0' )
                    $($.rating.groups[n].current).prevAll('.star_group_'+n).andSelf().addClass('star_on');
                else
                    $($.rating.groups[n].current).prevAll('.star_group_'+n).andSelf().not('.cancel').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.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
                    eStar = $('<div class="cancel"><a title="' + (this.title || this.value) + '">' + this.value + '</a></div>');
                }
            }
            else{
            
                // insert rating option right after value element
                eStar = $('<div class="star"><a 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){
                // Mark star as readOnly so user can customize display
                $(eStar)
                .addClass('star_readonly');
                //alert([this.name,this.value,this.checked].join('\n'));
            }
            else{
                $(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); });
            };
            
            ////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(); });
    
    
    
/*# AVOID COLLISIONS #*/
})(jQuery);
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