/*
 * 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');
            slider.addClass(settings.prefixCssClass + 'Slider');

            //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(settings.prefixCssClass + '-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);
                var cssclass = '';
                if (i == 0) {
                    cssclass = ' my-first';
                } else if (i == settings.slices - 1) {
                    cssclass = ' my-last';
                }
                if (i == settings.slices - 1) {
                    slider.append(
						$('<div class="' + settings.prefixCssClass + '-slice' + cssclass + '"></div>').css({ left: (sliceWidth * i) + 'px', width: (slider.width() - (sliceWidth * i)) + 'px' })
					);
                } else {
                    slider.append(
						$('<div class="' + settings.prefixCssClass + '-slice' + cssclass + '"></div>').css({ left: (sliceWidth * i) + 'px', width: sliceWidth + 'px' })
					);
                }
            }

            //Create caption
            slider.append(
				$('<div class="' + settings.prefixCssClass + '-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();
                $('.' + settings.prefixCssClass + '-caption p', slider).html(title);
                $('.' + settings.prefixCssClass + '-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="' + settings.prefixCssClass + '-directionNav"><a class="' + settings.prefixCssClass + '-prevNav"></a><a class="' + settings.prefixCssClass + '-nextNav"></a></div>');

                //Hide Direction nav
                if (settings.directionNavHide) {
                    $('.' + settings.prefixCssClass + '-directionNav', slider).hide();
                    slider.hover(function () {
                        $('.' + settings.prefixCssClass + '-directionNav', slider).show();
                    }, function () {
                        $('.' + settings.prefixCssClass + '-directionNav', slider).hide();
                    });
                }

                $('a.' + settings.prefixCssClass + '-prevNav', slider).live('click', function () {
                    if (vars.running) return false;
                    clearInterval(timer);
                    timer = '';
                    vars.currentSlide -= 2;
                    nivoRun(slider, kids, settings, 'prev');
                });

                $('a.' + settings.prefixCssClass + '-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="' + settings.prefixCssClass + '-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="' + settings.prefixCssClass + '-control" rel="' + i + '"><img src="' + child.attr('rel') + '" alt="" /></a>');
                        } else {
                            nivoControl.append('<a class="' + settings.prefixCssClass + '-control" rel="' + i + '"><img src="' + child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) + '" alt="" /></a>');
                        }
                    } else {
                        nivoControl.append('<a class="' + settings.prefixCssClass + '-control" rel="' + i + '">' + (i + 1) + '</a>');
                    }

                }
                //Set initial active link
                $('.' + settings.prefixCssClass + '-controlNav a:eq(' + vars.currentSlide + ')', slider).addClass('active');

                $('.' + settings.prefixCssClass + '-controlNav a', slider).live('click', function () {
                    if (vars.running) return false;
                    if ($(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) {
                $('.' + settings.prefixCssClass + '-controlNav a', slider).removeClass('active');
                $('.' + settings.prefixCssClass + '-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 ($('.' + settings.prefixCssClass + '-caption', slider).css('display') == 'block') {
                    $('.' + settings.prefixCssClass + '-caption p', slider).fadeOut(settings.animSpeed, function () {
                        $(this).html(title);
                        $(this).fadeIn(settings.animSpeed);
                    });
                } else {
                    $('.' + settings.prefixCssClass + '-caption p', slider).html(title);
                }
                $('.' + settings.prefixCssClass + '-caption', slider).fadeIn(settings.animSpeed);
            } else {
                $('.' + settings.prefixCssClass + '-caption', slider).fadeOut(settings.animSpeed);
            }

            //Set new slice backgrounds
            var i = 0;
            $('.' + settings.prefixCssClass + '-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 = $('.' + settings.prefixCssClass + '-slice', slider);
                if (settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') slices = $('.' + settings.prefixCssClass + '-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 = $('.' + settings.prefixCssClass + '-slice', slider);
                if (settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft') slices = $('.' + settings.prefixCssClass + '-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 = $('.' + settings.prefixCssClass + '-slice', slider);
                if (settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft') slices = $('.' + settings.prefixCssClass + '-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;
                $('.' + settings.prefixCssClass + '-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;
                $('.' + settings.prefixCssClass + '-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,
        prefixCssClass: "nivo",
        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);