/*
 * jQuery Nivo Slider v2.6
 * http://nivo.dev7studios.com
 *
 * Copyright 2011, Gilbert Pellegrom
 * Free to use and abuse under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * March 2010
 */

(function($) {

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

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

    //Get this slider
    var slider = $(element);
    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');

    //Create caption
    slider.append(
    $('<div class="nivo-caption"><p></p></div>').css({
      display: 'none',
      opacity: settings.captionOpacity
    }));

    // Process caption function
    var processCaption = function(settings) {
      var nivoCaption = $('.nivo-caption', slider);
      if (vars.currentImage.attr('title') != '' && vars.currentImage.attr('title') != undefined) {
        var title = vars.currentImage.attr('title');
        if (title.substr(0, 1) == '#') title = $(title).html();

        if (nivoCaption.css('display') == 'block') {
          nivoCaption.find('p').fadeOut(settings.animSpeed, function() {
            $(this).html(title);
            $(this).fadeIn(settings.animSpeed);
          });
        } else {
          nivoCaption.find('p').html(title);
        }
        nivoCaption.fadeIn(settings.animSpeed);
      } else {
        nivoCaption.fadeOut(settings.animSpeed);
      }
    }

    //Process initial  caption
    processCaption(settings);

    //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">' + settings.prevText + '</a><a class="nivo-nextNav">' + settings.nextText + '</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 + 1) + '</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);
    });

    // Add slices for slice animations
    var createSlices = function(slider, settings, vars) {
      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',
            height: '0px',
            opacity: '0',
            background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((sliceWidth + (i * sliceWidth)) - sliceWidth) + 'px 0%'
          }));
        } else {
          slider.append(
          $('<div class="nivo-slice"></div>').css({
            left: (sliceWidth * i) + 'px',
            width: sliceWidth + 'px',
            height: '0px',
            opacity: '0',
            background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((sliceWidth + (i * sliceWidth)) - sliceWidth) + 'px 0%'
          }));
        }
      }
    }

    // Add boxes for box animations
    var createBoxes = function(slider, settings, vars) {
      var boxWidth = Math.round(slider.width() / settings.boxCols);
      var boxHeight = Math.round(slider.height() / settings.boxRows);

      for (var rows = 0; rows < settings.boxRows; rows++) {
        for (var cols = 0; cols < settings.boxCols; cols++) {
          if (cols == settings.boxCols - 1) {
            slider.append(
            $('<div class="nivo-box"></div>').css({
              opacity: 0,
              left: (boxWidth * cols) + 'px',
              top: (boxHeight * rows) + 'px',
              width: (slider.width() - (boxWidth * cols)) + 'px',
              height: boxHeight + 'px',
              background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((boxWidth + (cols * boxWidth)) - boxWidth) + 'px -' + ((boxHeight + (rows * boxHeight)) - boxHeight) + 'px'
            }));
          } else {
            slider.append(
            $('<div class="nivo-box"></div>').css({
              opacity: 0,
              left: (boxWidth * cols) + 'px',
              top: (boxHeight * rows) + 'px',
              width: boxWidth + 'px',
              height: boxHeight + 'px',
              background: 'url("' + vars.currentImage.attr('src') + '") no-repeat -' + ((boxWidth + (cols * boxWidth)) - boxWidth) + 'px -' + ((boxHeight + (rows * boxHeight)) - boxHeight) + 'px'
            }));
          }
        }
      }
    }

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

      //Trigger the lastSlide callback
      if (vars && (vars.currentSlide == vars.totalSlides - 1)) {
        settings.lastSlide.call(this);
      }

      // Stop
      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++;
      //Trigger the slideshowEnd callback
      if (vars.currentSlide == vars.totalSlides) {
        vars.currentSlide = 0;
        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 active links
      if (settings.controlNav) {
        $('.nivo-controlNav a', slider).removeClass('active');
        $('.nivo-controlNav a:eq(' + vars.currentSlide + ')', slider).addClass('active');
      }

      //Process caption
      processCaption(settings);

      // Remove any slices from last transition
      $('.nivo-slice', slider).remove();

      // Remove any boxes from last transition
      $('.nivo-box', slider).remove();

      if (settings.effect == 'random') {
        var anims = new Array('fade','fold','fade','sliceUpDownLeft');
        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 = anims[Math.floor(Math.random() * (anims.length))];
        if (vars.randAnim == undefined) vars.randAnim = 'fade';
      }

      //Run effects
      vars.running = true;
      if (settings.effect == 'sliceDown' || settings.effect == 'sliceDownRight' || vars.randAnim == 'sliceDownRight' || settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') {
        createSlices(slider, settings, vars);
        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') {
        createSlices(slider, settings, vars);
        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') {
        createSlices(slider, settings, vars);
        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') {
        createSlices(slider, settings, vars);
        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') {
        createSlices(slider, settings, vars);

        var firstSlice = $('.nivo-slice:first', slider);
        firstSlice.css({
          'height': '100%',
          'width': slider.width() + 'px'
        });

        firstSlice.animate({
          opacity: '1.0'
        }, (settings.animSpeed * 2), '', function() {
          slider.trigger('nivo:animFinished');
        });
      } else if (settings.effect == 'slideInRight' || vars.randAnim == 'slideInRight') {
        createSlices(slider, settings, vars);

        var firstSlice = $('.nivo-slice:first', slider);
        firstSlice.css({
          'height': '100%',
          'width': '0px',
          'opacity': '1'
        });

        firstSlice.animate({
          width: slider.width() + 'px'
        }, (settings.animSpeed * 2), '', function() {
          slider.trigger('nivo:animFinished');
        });
      } else if (settings.effect == 'slideInLeft' || vars.randAnim == 'slideInLeft') {
        createSlices(slider, settings, vars);

        var firstSlice = $('.nivo-slice:first', slider);
        firstSlice.css({
          'height': '100%',
          'width': '0px',
          'opacity': '1',
          'left': '',
          'right': '0px'
        });

        firstSlice.animate({
          width: slider.width() + 'px'
        }, (settings.animSpeed * 2), '', function() {
          // Reset positioning
          firstSlice.css({
            'left': '0px',
            'right': ''
          });
          slider.trigger('nivo:animFinished');
        });
      } else if (settings.effect == 'boxRandom' || vars.randAnim == 'boxRandom') {
        createBoxes(slider, settings, vars);

        var totalBoxes = settings.boxCols * settings.boxRows;
        var i = 0;
        var timeBuff = 0;

        var boxes = shuffle($('.nivo-box', slider));
        boxes.each(function() {
          var box = $(this);
          if (i == totalBoxes - 1) {
            setTimeout(function() {
              box.animate({
                opacity: '1'
              }, settings.animSpeed, '', function() {
                slider.trigger('nivo:animFinished');
              });
            }, (100 + timeBuff));
          } else {
            setTimeout(function() {
              box.animate({
                opacity: '1'
              }, settings.animSpeed);
            }, (100 + timeBuff));
          }
          timeBuff += 20;
          i++;
        });
      } else if (settings.effect == 'boxRain' || vars.randAnim == 'boxRain' || settings.effect == 'boxRainReverse' || vars.randAnim == 'boxRainReverse' || settings.effect == 'boxRainGrow' || vars.randAnim == 'boxRainGrow' || settings.effect == 'boxRainGrowReverse' || vars.randAnim == 'boxRainGrowReverse') {
        createBoxes(slider, settings, vars);

        var totalBoxes = settings.boxCols * settings.boxRows;
        var i = 0;
        var timeBuff = 0;

        // Split boxes into 2D array
        var rowIndex = 0;
        var colIndex = 0;
        var box2Darr = new Array();
        box2Darr[rowIndex] = new Array();
        var boxes = $('.nivo-box', slider);
        if (settings.effect == 'boxRainReverse' || vars.randAnim == 'boxRainReverse' || settings.effect == 'boxRainGrowReverse' || vars.randAnim == 'boxRainGrowReverse') {
          boxes = $('.nivo-box', slider)._reverse();
        }
        boxes.each(function() {
          box2Darr[rowIndex][colIndex] = $(this);
          colIndex++;
          if (colIndex == settings.boxCols) {
            rowIndex++;
            colIndex = 0;
            box2Darr[rowIndex] = new Array();
          }
        });

        // Run animation
        for (var cols = 0; cols < (settings.boxCols * 2); cols++) {
          var prevCol = cols;
          for (var rows = 0; rows < settings.boxRows; rows++) {
            if (prevCol >= 0 && prevCol < settings.boxCols) {
/* Due to some weird JS bug with loop vars 
              being used in setTimeout, this is wrapped
              with an anonymous function call */
              (function(row, col, time, i, totalBoxes) {
                var box = $(box2Darr[row][col]);
                var w = box.width();
                var h = box.height();
                if (settings.effect == 'boxRainGrow' || vars.randAnim == 'boxRainGrow' || settings.effect == 'boxRainGrowReverse' || vars.randAnim == 'boxRainGrowReverse') {
                  box.width(0).height(0);
                }
                if (i == totalBoxes - 1) {
                  setTimeout(function() {
                    box.animate({
                      opacity: '1',
                      width: w,
                      height: h
                    }, settings.animSpeed / 1.3, '', function() {
                      slider.trigger('nivo:animFinished');
                    });
                  }, (100 + time));
                } else {
                  setTimeout(function() {
                    box.animate({
                      opacity: '1',
                      width: w,
                      height: h
                    }, settings.animSpeed / 1.3);
                  }, (100 + time));
                }
              })(rows, prevCol, timeBuff, i, totalBoxes);
              i++;
            }
            prevCol--;
          }
          timeBuff += 100;
        }
      }
    }

    // Shuffle an array
    var shuffle = function(arr) {
      for (var j, x, i = arr.length; i; j = parseInt(Math.random() * i), x = arr[--i], arr[i] = arr[j], arr[j] = x);
      return arr;
    }

    // For debugging
    var trace = function(msg) {
      if (this.console && typeof console.log != "undefined") console.log(msg);
    }

    // Start / Stop
    this.stop = function() {
      if (!$(element).data('nivo:vars').stop) {
        $(element).data('nivo:vars').stop = true;
        trace('Stop Slider');
      }
    }

    this.start = function() {
      if ($(element).data('nivo:vars').stop) {
        $(element).data('nivo:vars').stop = false;
        trace('Start Slider');
      }
    }

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

    return this;
  };

  $.fn.nivoSlider = function(options) {

    return this.each(function(key, value) {
      var element = $(this);
      // Return early if this element already has a plugin instance
      if (element.data('nivoslider')) return element.data('nivoslider');
      // Pass options to plugin constructor
      var nivoslider = new NivoSlider(this, options);
      // Store plugin object in this element's data
      element.data('nivoslider', nivoslider);
    });

  };

  //Default settings
  $.fn.nivoSlider.defaults = {
    effect: 'fade',
    slices: 1,
    boxCols: 1,
    boxRows: 1,
    animSpeed: 515,
    pauseTime: 5305,
    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,
    prevText: 'Prev',
    nextText: 'Next',
    beforeChange: function() {},
    afterChange: function() {},
    slideshowEnd: function() {},
    lastSlide: function() {},
    afterLoad: function() {}
  };

  $.fn._reverse = [].reverse;

})(jQuery);