/*
* jQuery Nivo Slider v2.4
* 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
* 
* 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 ($) {

    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');

        //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);
        });

        // Reset slice width before animations run
        var resetSliceWidth = function (slider, settings) {
            var slices = $('.nivo-slice', slider);
            var i = 0;
            slices.each(function () {
                var slice = $(this);
                var sliceWidth = Math.round(slider.width() / settings.slices);
                if (i == settings.slices - 1) {
                    slice.css('width', (slider.width() - (sliceWidth * i)) + 'px');
                } else {
                    slice.css('width', sliceWidth + 'px');
                }
                i++;
            });
        }

        // 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 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', 'slideInRight', 'slideInLeft');
                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') {
                var timeBuff = 0;
                var i = 0;
                resetSliceWidth(slider, settings);
                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;
                resetSliceWidth(slider, settings);
                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;
                resetSliceWidth(slider, settings);
                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;
                resetSliceWidth(slider, settings);
                $('.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 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') {
                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') {
                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');
                });
            }
        }

        // 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);
    };

    $.fn.nivoSlider = function (options) {

        return this.each(function () {
            var element = $(this);
            // Return early if this element already has a plugin instance
            if (element.data('nivoslider')) return;
            // 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: '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 () { },
        lastSlide: function () { },
        afterLoad: function () { }
    };

    $.fn._reverse = [].reverse;

})(jQuery);