/*
 * 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.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.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:3000,
      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);