/*
 * jQuery Nivo Slider v2.0
 * http://nivo.dev7studios.com
 *
 * Copyright 2010, Gilbert Pellegrom
 * Free to use and abuse under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 *
 * May 2010 - Pick random effect from specified set of effects by toronegro
 * May 2010 - controlNavThumbsFromRel option added by nerd-sh
 * May 2010 - Do not start nivoRun timer if there is only 1 slide by msielski
 * April 2010 - controlNavThumbs option added by Jamie Thompson (http://jamiethompson.co.uk)
 * March 2010 - manualAdvance option added by HelloPablo (http://hellopablo.co.uk)
 */

(function($) {

        $.fn.nivoSlider = function(options) {

                //Defaults are below
                var settings = $.extend({}, $.fn.nivoSlider.defaults, options);

                return this.each(function() {
                        //Useful variables. Play carefully.
                        var vars = {
                                currentSlide: 0,
                                currentImage: '',
                                totalSlides: 0,
                                randAnim: '',
                                running: false,
                                paused: false,
                                stop:false
                        };

                        //Get this slider
                        var slider = $(this);
                        slider.data('nivo:vars', vars);
                        slider.css('position','relative');
                        slider.addClass('nivoSlider');

                        //Find our slider children
                        var kids = slider.children();
                        kids.each(function() {
                                var child = $(this);
                                var link = '';
                                if(!child.is('img')){
                                        if(child.is('a')){
                                                child.addClass('nivo-imageLink');
                                                link = child;
                                        }
                                        child = child.find('img:first');
                                }
                                //Get img width & height
                var childWidth = child.width();
                if(childWidth == 0) childWidth = child.attr('width');
                var childHeight = child.height();
                if(childHeight == 0) childHeight = child.attr('height');
                //Resize the slider
                if(childWidth > slider.width()){
                    slider.width(childWidth);
                }
                if(childHeight > slider.height()){
                    slider.height(childHeight);
                }
                if(link != ''){
                    link.css('display','none');
                }
                child.css('display','none');
                vars.totalSlides++;
                        });

                        //Set startSlide
                        if(settings.startSlide > 0){
                                if(settings.startSlide >= vars.totalSlides) settings.startSlide = vars.totalSlides - 1;
                                vars.currentSlide = settings.startSlide;
                        }

                        //Get initial image
                        if($(kids[vars.currentSlide]).is('img')){
                                vars.currentImage = $(kids[vars.currentSlide]);
                        } else {
                                vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
                        }

                        //Show initial link
                        if($(kids[vars.currentSlide]).is('a')){
                                $(kids[vars.currentSlide]).css('display','block');
                        }

                        //Set first background
                        slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');

                        //Add initial slices
                        for(var i = 0; i < settings.slices; i++){
                                var sliceWidth = Math.round(slider.width()/settings.slices);
                                if(i == settings.slices-1){
                                        slider.append(
                                                $('<div class="nivo-slice"></div>').css({ left:(sliceWidth*i)+'px', width:(slider.width()-(sliceWidth*i))+'px' })
                                        );
                                } else {
                                        slider.append(
                                                $('<div class="nivo-slice"></div>').css({ left:(sliceWidth*i)+'px', width:sliceWidth+'px' })
                                        );
                                }
                        }

                        //Create caption
                        slider.append(
                                $('<div class="nivo-caption"><p></p></div>').css({ display:'none', opacity:settings.captionOpacity })
                        );
                        //Process initial  caption
                        if(vars.currentImage.attr('title') != ''){
                                $('.nivo-caption p', slider).html(vars.currentImage.attr('title'));
                                $('.nivo-caption', slider).fadeIn(settings.animSpeed);
                        }

                        //In the words of Super Mario "let's a go!"
                        var timer = 0;
                        if(!settings.manualAdvance && kids.length > 1){
                                timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
                        }

                        //Add Direction nav
                        if(settings.directionNav){
                                slider.append('<div class="nivo-directionNav"><a class="nivo-prevNav">Prev</a><a class="nivo-nextNav">Next</a></div>');

                                //Hide Direction nav
                                if(settings.directionNavHide){
                                        $('.nivo-directionNav', slider).hide();
                                        slider.parent().hover(function(){
                                                $('.nivo-directionNav', slider).fadeIn();
                                        }, function(){
                                                $('.nivo-directionNav', slider).hide();
                                        });
                                }

                                $('a.nivo-prevNav', slider).live('click', function(){
                                        if(vars.running) return false;
                                        clearInterval(timer);
                                        timer = '';
                                        vars.currentSlide-=2;
                                        nivoRun(slider, kids, settings, 'prev');
                                });

                                $('a.nivo-nextNav', slider).live('click', function(){
                                        if(vars.running) return false;
                                        clearInterval(timer);
                                        timer = '';
                                        nivoRun(slider, kids, settings, 'next');
                                });
                        }

                        //Add Control nav
                        if(settings.controlNav){
                                var nivoControl = $('<div class="nivo-controlNav"></div>');
                                slider.append(nivoControl);
                                for(var i = 0; i < kids.length; i++){
                                        if(settings.controlNavThumbs){
                                                var child = kids.eq(i);
                                                if(!child.is('img')){
                                                        child = child.find('img:first');
                                                }
                        if (settings.controlNavThumbsFromRel) {
                            nivoControl.append('<a class="nivo-control" rel="'+ i +'"><img src="'+ child.attr('rel') + '" alt="" /></a>');
                        } else {
                            nivoControl.append('<a class="nivo-control" rel="'+ i +'"><img src="'+ child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) +'" alt="" /></a>');
                        }
                                        } else {
                                                nivoControl.append('<a class="nivo-control" rel="'+ i +'">'+ i +'</a>');
                                        }

                                }
                                //Set initial active link
                                $('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');

                                $('.nivo-controlNav a', slider).live('click', function(){
                                        if(vars.running) return false;
                                        if($(this).hasClass('active')) return false;
                                        clearInterval(timer);
                                        timer = '';
                                        slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
                                        vars.currentSlide = $(this).attr('rel') - 1;
                                        nivoRun(slider, kids, settings, 'control');
                                });
                        }

                        //Keyboard Navigation
                        if(settings.keyboardNav){
                                $(window).keypress(function(event){
                                        //Left
                                        if(event.keyCode == '37'){
                                                if(vars.running) return false;
                                                clearInterval(timer);
                                                timer = '';
                                                vars.currentSlide-=2;
                                                nivoRun(slider, kids, settings, 'prev');
                                        }
                                        //Right
                                        if(event.keyCode == '39'){
                                                if(vars.running) return false;
                                                clearInterval(timer);
                                                timer = '';
                                                nivoRun(slider, kids, settings, 'next');
                                        }
                                });
                        }

                        //For pauseOnHover setting
                        if(settings.pauseOnHover){
                                slider.hover(function(){
                                        vars.paused = true;
                                        clearInterval(timer);
                                        timer = '';
                                }, function(){
                                        vars.paused = false;
                                        //Restart the timer
                                        if(timer == '' && !settings.manualAdvance){
                                                timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
                                        }
                                });
                        }

                        //Event when Animation finishes
                        slider.bind('nivo:animFinished', function(){
                                vars.running = false;
                                //Hide child links
                                $(kids).each(function(){
                                        if($(this).is('a')){
                                                $(this).css('display','none');
                                        }
                                });
                                //Show current link
                                if($(kids[vars.currentSlide]).is('a')){
                                        $(kids[vars.currentSlide]).css('display','block');
                                }
                                //Restart the timer
                                if(timer == '' && !vars.paused && !settings.manualAdvance){
                                        timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
                                }
                                //Trigger the afterChange callback
                                settings.afterChange.call(this);
                        });
                });

                function nivoRun(slider, kids, settings, nudge){
                        //Get our vars
                        var vars = slider.data('nivo:vars');

                        if($(kids[vars.currentSlide]).is('img')){
                                vars.currentImage = $(kids[vars.currentSlide]);
                        } else {
                                vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
                        }

                        if((!vars || vars.stop) && !nudge) return false;

                        //Trigger the beforeChange callback
                        settings.beforeChange.call(this);

                        //Set current background before change
                        if(!nudge){
                                slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
                        } else {
                                if(nudge == 'prev'){
                                        slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
                                }
                                if(nudge == 'next'){
                                        slider.css('background','url('+ vars.currentImage.attr('src') +') no-repeat');
                                }
                        }
                        vars.currentSlide++;
                        if(vars.currentSlide == vars.totalSlides){
                                vars.currentSlide = 0;
                                //Trigger the slideshowEnd callback
                                settings.slideshowEnd.call(this);
                        }
                        if(vars.currentSlide < 0) vars.currentSlide = (vars.totalSlides - 1);
                        //Set vars.currentImage
                        if($(kids[vars.currentSlide]).is('img')){
                                vars.currentImage = $(kids[vars.currentSlide]);
                        } else {
                                vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
                        }

                        //Set acitve links
                        if(settings.controlNav){
                                $('.nivo-controlNav a', slider).removeClass('active');
                                $('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');
                        }

                        //Process caption
                        if(vars.currentImage.attr('title') != ''){
                                if($('.nivo-caption', slider).css('display') == 'block'){
                                        $('.nivo-caption p', slider).fadeOut(settings.animSpeed, function(){
                                                $(this).html(vars.currentImage.attr('title'));
                                                $(this).fadeIn(settings.animSpeed);
                                        });
                                } else {
                                        $('.nivo-caption p', slider).html(vars.currentImage.attr('title'));
                                }
                                $('.nivo-caption', slider).fadeIn(settings.animSpeed);
                        } else {
                                $('.nivo-caption', slider).fadeOut(settings.animSpeed);
                        }

                        //Set new slice backgrounds
                        var  i = 0;
                        $('.nivo-slice', slider).each(function(){
                                var sliceWidth = Math.round(slider.width()/settings.slices);
                                $(this).css({ height:'0px', opacity:'0',
                                        background: 'url('+ vars.currentImage.attr('src') +') no-repeat -'+ ((sliceWidth + (i * sliceWidth)) - sliceWidth) +'px 0%' });
                                i++;
                        });

                        if(settings.effect == 'random'){
                                var anims = new Array("sliceDownRight","sliceDownLeft","sliceUpRight","sliceUpLeft","sliceUpDown","sliceUpDownLeft","fold","fade");
                                vars.randAnim = anims[Math.floor(Math.random()*(anims.length + 1))];
                                if(vars.randAnim == undefined) vars.randAnim = 'fade';
                        }

            //Run random effect from specified set (eg: effect:'fold,fade')
            if(settings.effect.indexOf(',') != -1){
                var anims = settings.effect.split(',');
                vars.randAnim = $.trim(anims[Math.floor(Math.random()*anims.length)]);
            }

                        //Run effects
                        vars.running = true;
                        if(settings.effect == 'sliceDown' || settings.effect == 'sliceDownRight' || vars.randAnim == 'sliceDownRight' ||
                                settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft'){
                                var timeBuff = 0;
                                var i = 0;
                                var slices = $('.nivo-slice', slider);
                                if(settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') slices = $('.nivo-slice', slider).reverse();
                                slices.each(function(){
                                        var slice = $(this);
                                        slice.css('top','0px');
                                        if(i == settings.slices-1){
                                                setTimeout(function(){
                                                        slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
                                                }, (100 + timeBuff));
                                        } else {
                                                setTimeout(function(){
                                                        slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed);
                                                }, (100 + timeBuff));
                                        }
                                        timeBuff += 50;
                                        i++;
                                });
                        }
                        else if(settings.effect == 'sliceUp' || settings.effect == 'sliceUpRight' || vars.randAnim == 'sliceUpRight' ||
                                        settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft'){
                                var timeBuff = 0;
                                var i = 0;
                                var slices = $('.nivo-slice', slider);
                                if(settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft') slices = $('.nivo-slice', slider).reverse();
                                slices.each(function(){
                                        var slice = $(this);
                                        slice.css('bottom','0px');
                                        if(i == settings.slices-1){
                                                setTimeout(function(){
                                                        slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
                                                }, (100 + timeBuff));
                                        } else {
                                                setTimeout(function(){
                                                        slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed);
                                                }, (100 + timeBuff));
                                        }
                                        timeBuff += 50;
                                        i++;
                                });
                        }
                        else if(settings.effect == 'sliceUpDown' || settings.effect == 'sliceUpDownRight' || vars.randAnim == 'sliceUpDown' ||
                                        settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft'){
                                var timeBuff = 0;
                                var i = 0;
                                var v = 0;
                                var slices = $('.nivo-slice', slider);
                                if(settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft') slices = $('.nivo-slice', slider).reverse();
                                slices.each(function(){
                                        var slice = $(this);
                                        if(i == 0){
                                                slice.css('top','0px');
                                                i++;
                                        } else {
                                                slice.css('bottom','0px');
                                                i = 0;
                                        }

                                        if(v == settings.slices-1){
                                                setTimeout(function(){
                                                        slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
                                                }, (100 + timeBuff));
                                        } else {
                                                setTimeout(function(){
                                                        slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed);
                                                }, (100 + timeBuff));
                                        }
                                        timeBuff += 50;
                                        v++;
                                });
                        }
                        else if(settings.effect == 'fold' || vars.randAnim == 'fold'){
                                var timeBuff = 0;
                                var i = 0;
                                $('.nivo-slice', slider).each(function(){
                                        var slice = $(this);
                                        var origWidth = slice.width();
                                        slice.css({ top:'0px', height:'100%', width:'0px' });
                                        if(i == settings.slices-1){
                                                setTimeout(function(){
                                                        slice.animate({ width:origWidth, opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
                                                }, (100 + timeBuff));
                                        } else {
                                                setTimeout(function(){
                                                        slice.animate({ width:origWidth, opacity:'1.0' }, settings.animSpeed);
                                                }, (100 + timeBuff));
                                        }
                                        timeBuff += 50;
                                        i++;
                                });
                        }
                        else if(settings.effect == 'fade' || vars.randAnim == 'fade'){
                                var i = 0;
                                $('.nivo-slice', slider).each(function(){
                                        $(this).css('height','100%');
                                        if(i == settings.slices-1){
                                                $(this).animate({ opacity:'1.0' }, (settings.animSpeed*2), '', function(){ slider.trigger('nivo:animFinished'); });
                                        } else {
                                                $(this).animate({ opacity:'1.0' }, (settings.animSpeed*2));
                                        }
                                        i++;
                                });
                        }
                }
        };

        //Default settings
        $.fn.nivoSlider.defaults = {
                effect:'random',
                slices:15,
                animSpeed:500,
                pauseTime:5000,
                startSlide:0,
                directionNav:true,
                directionNavHide:true,
                controlNav:true,
                controlNavThumbs:false,
        controlNavThumbsFromRel:false,
                controlNavThumbsSearch:'.jpg',
                controlNavThumbsReplace:'_thumb.jpg',
                keyboardNav:true,
                pauseOnHover:true,
                manualAdvance:false,
                captionOpacity:0.8,
                beforeChange: function(){},
                afterChange: function(){},
                slideshowEnd: function(){}
        };

        $.fn.reverse = [].reverse;

})(jQuery);