/*
 * 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"><h2></h2></div>').css({ display:'none', opacity:settings.captionOpacity })

            );          

            //Process initial  caption

            if(vars.currentImage.parent().parent().find('h2').text() != ''){

                $('.nivo-caption h2').html(vars.currentImage.parent().parent().find('h2').html());

                //$('.nivo-caption p').html(vars.currentImage.parent().parent().find('p').text());    

                $('.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.hover(function(){

                        $('.nivo-directionNav', slider).show();

                    }, 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((!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.parent().parent().find('h2').text() != ''){

                if($('.nivo-caption', slider).css('display') == 'block'){

                    $('.nivo-caption', slider).fadeOut(settings.animSpeed, function(){

                        $('.nivo-caption h2').html(vars.currentImage.parent().parent().find('h2').html());

                        //$('.nivo-caption p').html(vars.currentImage.parent().parent().find('p').text());

                        $(this).fadeIn(settings.animSpeed);

                    });

                } else {

                    $('.nivo-caption h2', slider).html(vars.currentImage.parent().parent().find('h2').html())

                    //$('.nivo-caption p', slider).html(vars.currentImage.parent().parent().find('p').text());

                }                   

                $('.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:1000,

        pauseTime:6000,

        startSlide:0,

        directionNav:true,

        directionNavHide:false,

        controlNav:false,

        controlNavThumbs:false,

        controlNavThumbsFromRel:false,

        controlNavThumbsSearch:'.jpg',

        controlNavThumbsReplace:'_thumb.jpg',

        keyboardNav:true,

        pauseOnHover:true,

        manualAdvance:true,

        captionOpacity:0.8,

        beforeChange: function(){},

        afterChange: function(){},

        slideshowEnd: function(){}

    };

    

    $.fn.reverse = [].reverse;

    

})(jQuery);