/*
 ### 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 #*/

    // IE6 Background Image Fix
    if ($.browser.msie) try { document.execCommand("BackgroundImageCache", false, true)} catch(e) { }
    // Thanks to http://www.visualjquery.com/rating/rating_redux.html

    // 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"' + (settings.required ? ' class="required"' : '') + ' 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 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...
    };

/*# AVOID COLLISIONS #*/
})(jQuery);
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