/*
 * jQuery Nivo Slider v2.1
 * 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');

            //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') != '')
            {
                var title = vars.currentImage.attr('title');
                if (title.substr(0, 1) == '#') title = $(title).html();
                $('.nivo-caption p', slider).html(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 + 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);
            });
        });

        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') != '')
            {
                var title = vars.currentImage.attr('title');
                if (title.substr(0, 1) == '#') title = $(title).html();

                if ($('.nivo-caption', slider).css('display') == 'block')
                {
                    $('.nivo-caption p', slider).fadeOut(settings.animSpeed, function()
                    {
                        $(this).html(title);
                        $(this).fadeIn(settings.animSpeed);
                    });
                }
                else
                {
                    $('.nivo-caption p', slider).html(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);
                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);
                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);
                    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:'sliceDown',
        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);