/*
 *  easyAccordion 0.1 - jQuery plugin
 *  written by Andrea Cima Serniotti
 *  http://www.madeincima.eu
 *
 *  Copyright (c) 2010 Andrea Cima Serniotti (http://www.madeincima.eu)
 *  Dual licensed under the MIT (MIT-LICENSE.txt) and GPL (GPL-LICENSE.txt) licenses.
 *  Built for jQuery library http://jquery.com
 */

(function(jQuery) {
    jQuery.fn.easyAccordion = function(options) {

    var defaults = {
        slideNum: true,
        autoStart: false,
        slideInterval: 3000
    };

    this.each(function() {

        var settings = jQuery.extend(defaults, options);
        jQuery(this).find('dl').addClass('easy-accordion');


        // -------- Set the variables ------------------------------------------------------------------------------

        jQuery.fn.setVariables = function() {
            dlWidth = jQuery(this).width();
            dlHeight = jQuery(this).height();
            dtWidth = jQuery(this).find('dt').outerHeight();
            if (jQuery.browser.msie){ dtWidth = $(this).find('dt').outerWidth();}
            dtHeight = dlHeight - (jQuery(this).find('dt').outerWidth()-jQuery(this).find('dt').width());
            slideTotal = jQuery(this).find('dt').size();
            ddWidth = dlWidth - (dtWidth*slideTotal) - (jQuery(this).find('dd').outerWidth(true)-jQuery(this).find('dd').width());
            ddHeight = dlHeight - (jQuery(this).find('dd').outerHeight(true)-jQuery(this).find('dd').height());
        };
        jQuery(this).setVariables();


        // -------- Fix some weird cross-browser issues due to the CSS rotation -------------------------------------

        if (jQuery.browser.safari){ var dtTop = (dlHeight-dtWidth)/2; var dtOffset = -dtTop;  /* Safari and Chrome */ }
        if (jQuery.browser.mozilla){ var dtTop = dlHeight - 20; var dtOffset = - 20; /* FF */ }
        if (jQuery.browser.msie){ var dtTop = 0; var dtOffset = 0; /* IE */ }


        // -------- Getting things ready ------------------------------------------------------------------------------

        var f = 1;
        jQuery(this).find('dt').each(function(){
            jQuery(this).css({'width':dtHeight,'top':dtTop,'margin-left':dtOffset});
            if(settings.slideNum == true){
                jQuery('<span class="slide-number">'+0+f+'</span>').appendTo(this);
                if(jQuery.browser.msie){
                    var slideNumLeft = parseInt(jQuery(this).find('.slide-number').css('left')) - 14;
                    jQuery(this).find('.slide-number').css({'left': slideNumLeft})
                    if(jQuery.browser.version == 6.0 || jQuery.browser.version == 7.0){
                        jQuery(this).find('.slide-number').css({'bottom':'auto'});
                    }
                    if(jQuery.browser.version == 8.0){
                    var slideNumTop = jQuery(this).find('.slide-number').css('bottom');
                    var slideNumTopVal = parseInt(slideNumTop) + parseInt(jQuery(this).css('padding-top'))  - 12;
                    jQuery(this).find('.slide-number').css({'bottom': slideNumTopVal});
                    }
                } else {
                    var slideNumTop = jQuery(this).find('.slide-number').css('bottom');
                    var slideNumTopVal = parseInt(slideNumTop) + parseInt(jQuery(this).css('padding-top'));
                    jQuery(this).find('.slide-number').css({'bottom': slideNumTopVal});
                }
            }
            f = f + 1;
        });

        if(jQuery(this).find('.active').size()) {
            jQuery(this).find('.active').next('dd').addClass('active');
        } else {
            jQuery(this).find('dt:first').addClass('active').next('dd').addClass('active');
        }

        jQuery(this).find('dt:first').css({'left':'0'}).next().css({'left':dtWidth});
        jQuery(this).find('dd').css({'width':ddWidth,'height':ddHeight});


        // -------- Functions ------------------------------------------------------------------------------

        jQuery.fn.findActiveSlide = function() {
                var i = 1;
                this.find('dt').each(function(){
                if(jQuery(this).hasClass('active')){
                    activeID = i; // Active slide
                } else if (jQuery(this).hasClass('no-more-active')){
                    noMoreActiveID = i; // No more active slide
                }
                i = i + 1;
            });
        };

        jQuery.fn.calculateSlidePos = function() {
            var u = 2;
            jQuery(this).find('dt').not(':first').each(function(){
                var activeDtPos = dtWidth*activeID;
                if(u <= activeID){
                    var leftDtPos = dtWidth*(u-1);
                    jQuery(this).animate({'left': leftDtPos});
                    if(u < activeID){ // If the item sits to the left of the active element
                        jQuery(this).next().css({'left':leftDtPos+dtWidth});
                    } else{ // If the item is the active one
                        jQuery(this).next().animate({'left':activeDtPos});
                    }
                } else {
                    var rightDtPos = dlWidth-(dtWidth*(slideTotal-u+1));
                    jQuery(this).animate({'left': rightDtPos});
                    var rightDdPos = rightDtPos+dtWidth;
                    jQuery(this).next().animate({'left':rightDdPos});
                }
                u = u+ 1;
            });
            setTimeout( function() {
                jQuery('.easy-accordion').find('dd').not('.active').each(function(){
                    jQuery(this).css({'display':'none'});
                });
            }, 400);

        };

        jQuery.fn.activateSlide = function() {
            this.parent('dl').setVariables();
            this.parent('dl').find('dd').css({'display':'block'});
            this.parent('dl').find('dd.plus').removeClass('plus');
            this.parent('dl').find('.no-more-active').removeClass('no-more-active');
            this.parent('dl').find('.active').removeClass('active').addClass('no-more-active');
            this.addClass('active').next().addClass('active');
            this.parent('dl').findActiveSlide();
            if(activeID < noMoreActiveID){
                this.parent('dl').find('dd.no-more-active').addClass('plus');
            }
            this.parent('dl').calculateSlidePos();
        };

        jQuery.fn.rotateSlides = function(slideInterval, timerInstance) {
            var accordianInstance = jQuery(this);
            timerInstance.value = setTimeout(function(){accordianInstance.rotateSlides(slideInterval, timerInstance);}, slideInterval);
            jQuery(this).findActiveSlide();
            var totalSlides = jQuery(this).find('dt').size();
            var activeSlide = activeID;
            var newSlide = activeSlide + 1;
            if (newSlide > totalSlides) newSlide = 1;
            jQuery(this).find('dt:eq(' + (newSlide-1) + ')').activateSlide(); // activate the new slide
        }


        // -------- Let's do it! ------------------------------------------------------------------------------

        function trackerObject() {this.value = null}
        var timerInstance = new trackerObject();

        jQuery(this).findActiveSlide();
        jQuery(this).calculateSlidePos();

        if (settings.autoStart == true){
            var accordianInstance = jQuery(this);
            var interval = parseInt(settings.slideInterval);
            timerInstance.value = setTimeout(function(){
                accordianInstance.rotateSlides(interval, timerInstance);
                }, interval);
        }

        jQuery(this).find('dt').not('active').click(function(){
            jQuery(this).activateSlide();
            clearTimeout(timerInstance.value);
        });

        if (!(jQuery.browser.msie && jQuery.browser.version == 6.0)){
            jQuery('dt').hover(function(){
                jQuery(this).addClass('hover');
            }, function(){
                jQuery(this).removeClass('hover');
            });
        }
    });
    };
})(jQuery);