/* Modernizr 2.6.2 (Custom Build) | MIT & BSD
 * Build: http://modernizr.com/download/#-cssanimations-csstransitions-touch-shiv-cssclasses-prefixed-teststyles-testprop-testallprops-prefixes-domprefixes-load
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var PageTransitions = (function () {

    var startPageIndex = 0,
        animEndEventNames = {
            'WebkitAnimation': 'webkitAnimationEnd',
            'OAnimation': 'oAnimationEnd',
            'msAnimation': 'MSAnimationEnd',
            'animation': 'animationend'
        },

        // animation end event name
        animEndEventName = animEndEventNames[Modernizr.prefixed('animation')],

        // support css animations
        support = Modernizr.cssanimations;

    function init() {

        // Get all the .pt-page div.
        $('.pt-page').each(function () {
            var $page = $(this);
            $page.data('originalClassList', $page.attr('class'));
        });

        // Get all the .pt-wrapper div which is the parent for all pt-div
        $('.pt-wrapper').each(function () {
            var $wrapperDiv = $(this);
            $wrapperDiv.data('current', 0);
            $wrapperDiv.data('isAnimating', false);
            $wrapperDiv.children('.pt-page').eq(startPageIndex).addClass('pt-page-current');
        });

        // Adding click event to .pt-trigger
        $('.pt-trigger').click(function () {
            $('.pt-page').scrollTop(0);
            $pageTrigger = $(this);
            Animate($pageTrigger);
        });
    }

    // All pt-trigger click event calls this function
    // This function gets the animation id, goto page that we define in `data-animation` and 'data-goto' repectively.
    function Animate($pageTrigger) {

        // Checking for 'data-animation' and 'data-goto' attributes.
        if (!($pageTrigger.attr('data-animation'))) {
            alert("Transition.js : Invalid attribute configuration. \n\n 'data-animation' attribute not found");
            return false;
        } else if (!($pageTrigger.attr('data-goto'))) {
            alert("Transition.js : Invalid attribute configuration. \n\n 'data-goto' attribute not found");
            return false;
        }

        var animation = $pageTrigger.data('animation').toString(),
            gotoPage, inClass, outClass, selectedAnimNumber;

        // Check if the delimiter '-' is present then create an animation array list.
        if (animation.indexOf('-') != -1) {
            var randomAnimList = animation.split('-');
            selectedAnimNumber = parseInt(randomAnimList[(Math.floor(Math.random() * randomAnimList.length))]);
        } else {
            selectedAnimNumber = parseInt(animation);
        }

        // Checking if the animation number is out of bound, max allowed value is 1 to 67.
        if (selectedAnimNumber > 67) {
            alert("Transition.js : Invalid 'data-animation' attribute configuration. Animation number should not be greater than 67");
            return false;
        }

        switch (selectedAnimNumber) {
        case 1:
            inClass = 'pt-page-moveFromRight';
            outClass = 'pt-page-moveToLeft';
            break;
        case 2:
            inClass = 'pt-page-moveFromLeft';
            outClass = 'pt-page-moveToRight';
            break;
        case 3:
            inClass = 'pt-page-moveFromBottom';
            outClass = 'pt-page-moveToTop';
            break;
        case 4:
            inClass = 'pt-page-moveFromTop';
            outClass = 'pt-page-moveToBottom';
            break;
        case 5:
            inClass = 'pt-page-moveFromRight pt-page-ontop';
            outClass = 'pt-page-fade';
            break;
        case 6:
            inClass = 'pt-page-moveFromLeft pt-page-ontop';
            outClass = 'pt-page-fade';
            break;
        case 7:
            inClass = 'pt-page-moveFromBottom pt-page-ontop';
            outClass = 'pt-page-fade';
            break;
        case 8:
            inClass = 'pt-page-moveFromTop pt-page-ontop';
            outClass = 'pt-page-fade';
            break;
        case 9:
            inClass = 'pt-page-moveFromRightFade';
            outClass = 'pt-page-moveToLeftFade';
            break;
        case 10:
            inClass = 'pt-page-moveFromLeftFade';
            outClass = 'pt-page-moveToRightFade';
            break;
        case 11:
            inClass = 'pt-page-moveFromBottomFade';
            outClass = 'pt-page-moveToTopFade';
            break;
        case 12:
            inClass = 'pt-page-moveFromTopFade';
            outClass = 'pt-page-moveToBottomFade';
            break;
        case 13:
            inClass = 'pt-page-moveFromRight';
            outClass = 'pt-page-moveToLeftEasing pt-page-ontop';
            break;
        case 14:
            inClass = 'pt-page-moveFromLeft';
            outClass = 'pt-page-moveToRightEasing pt-page-ontop';
            break;
        case 15:
            inClass = 'pt-page-moveFromBottom';
            outClass = 'pt-page-moveToTopEasing pt-page-ontop';
            break;
        case 16:
            inClass = 'pt-page-moveFromTop';
            outClass = 'pt-page-moveToBottomEasing pt-page-ontop';
            break;
        case 17:
            inClass = 'pt-page-moveFromRight pt-page-ontop';
            outClass = 'pt-page-scaleDown';
            break;
        case 18:
            inClass = 'pt-page-moveFromLeft pt-page-ontop';
            outClass = 'pt-page-scaleDown';
            break;
        case 19:
            inClass = 'pt-page-moveFromBottom pt-page-ontop';
            outClass = 'pt-page-scaleDown';
            break;
        case 20:
            inClass = 'pt-page-moveFromTop pt-page-ontop';
            outClass = 'pt-page-scaleDown';
            break;
        case 21:
            inClass = 'pt-page-scaleUpDown pt-page-delay300';
            outClass = 'pt-page-scaleDown';
            break;
        case 22:
            inClass = 'pt-page-scaleUp pt-page-delay300';
            outClass = 'pt-page-scaleDownUp';
            break;
        case 23:
            inClass = 'pt-page-scaleUp';
            outClass = 'pt-page-moveToLeft pt-page-ontop';
            break;
        case 24:
            inClass = 'pt-page-scaleUp';
            outClass = 'pt-page-moveToRight pt-page-ontop';
            break;
        case 25:
            inClass = 'pt-page-scaleUp';
            outClass = 'pt-page-moveToTop pt-page-ontop';
            break;
        case 26:
            inClass = 'pt-page-scaleUp';
            outClass = 'pt-page-moveToBottom pt-page-ontop';
            break;
        case 27:
            inClass = 'pt-page-scaleUpCenter pt-page-delay400';
            outClass = 'pt-page-scaleDownCenter';
            break;
        case 28:
            inClass = 'pt-page-moveFromRight pt-page-delay200 pt-page-ontop';
            outClass = 'pt-page-rotateRightSideFirst';
            break;
        case 29:
            inClass = 'pt-page-moveFromLeft pt-page-delay200 pt-page-ontop';
            outClass = 'pt-page-rotateLeftSideFirst';
            break;
        case 30:
            inClass = 'pt-page-moveFromTop pt-page-delay200 pt-page-ontop';
            outClass = 'pt-page-rotateTopSideFirst';
            break;
        case 31:
            inClass = 'pt-page-moveFromBottom pt-page-delay200 pt-page-ontop';
            outClass = 'pt-page-rotateBottomSideFirst';
            break;
        case 32:
            inClass = 'pt-page-flipInLeft pt-page-delay500';
            outClass = 'pt-page-flipOutRight';
            break;
        case 33:
            inClass = 'pt-page-flipInRight pt-page-delay500';
            outClass = 'pt-page-flipOutLeft';
            break;
        case 34:
            inClass = 'pt-page-flipInBottom pt-page-delay500';
            outClass = 'pt-page-flipOutTop';
            break;
        case 35:
            inClass = 'pt-page-flipInTop pt-page-delay500';
            outClass = 'pt-page-flipOutBottom';
            break;
        case 36:
            inClass = 'pt-page-scaleUp';
            outClass = 'pt-page-rotateFall pt-page-ontop';
            break;
        case 37:
            inClass = 'pt-page-rotateInNewspaper pt-page-delay500';
            outClass = 'pt-page-rotateOutNewspaper';
            break;
        case 38:
            inClass = 'pt-page-moveFromRight';
            outClass = 'pt-page-rotatePushLeft';
            break;
        case 39:
            inClass = 'pt-page-moveFromLeft';
            outClass = 'pt-page-rotatePushRight';
            break;
        case 40:
            inClass = 'pt-page-moveFromBottom';
            outClass = 'pt-page-rotatePushTop';
            break;
        case 41:
            inClass = 'pt-page-moveFromTop';
            outClass = 'pt-page-rotatePushBottom';
            break;
        case 42:
            inClass = 'pt-page-rotatePullRight pt-page-delay180';
            outClass = 'pt-page-rotatePushLeft';
            break;
        case 43:
            inClass = 'pt-page-rotatePullLeft pt-page-delay180';
            outClass = 'pt-page-rotatePushRight';
            break;
        case 44:
            inClass = 'pt-page-rotatePullBottom pt-page-delay180';
            outClass = 'pt-page-rotatePushTop';
            break;
        case 45:
            inClass = 'pt-page-rotatePullTop pt-page-delay180';
            outClass = 'pt-page-rotatePushBottom';
            break;
        case 46:
            inClass = 'pt-page-moveFromRightFade';
            outClass = 'pt-page-rotateFoldLeft';
            break;
        case 47:
            inClass = 'pt-page-moveFromLeftFade';
            outClass = 'pt-page-rotateFoldRight';
            break;
        case 48:
            inClass = 'pt-page-moveFromBottomFade';
            outClass = 'pt-page-rotateFoldTop';
            break;
        case 49:
            inClass = 'pt-page-moveFromTopFade';
            outClass = 'pt-page-rotateFoldBottom';
            break;
        case 50:
            inClass = 'pt-page-rotateUnfoldLeft';
            outClass = 'pt-page-moveToRightFade';
            break;
        case 51:
            inClass = 'pt-page-rotateUnfoldRight';
            outClass = 'pt-page-moveToLeftFade';
            break;
        case 52:
            inClass = 'pt-page-rotateUnfoldTop';
            outClass = 'pt-page-moveToBottomFade';
            break;
        case 53:
            inClass = 'pt-page-rotateUnfoldBottom';
            outClass = 'pt-page-moveToTopFade';
            break;
        case 54:
            inClass = 'pt-page-rotateRoomLeftIn';
            outClass = 'pt-page-rotateRoomLeftOut pt-page-ontop';
            break;
        case 55:
            inClass = 'pt-page-rotateRoomRightIn';
            outClass = 'pt-page-rotateRoomRightOut pt-page-ontop';
            break;
        case 56:
            inClass = 'pt-page-rotateRoomTopIn';
            outClass = 'pt-page-rotateRoomTopOut pt-page-ontop';
            break;
        case 57:
            inClass = 'pt-page-rotateRoomBottomIn';
            outClass = 'pt-page-rotateRoomBottomOut pt-page-ontop';
            break;
        case 58:
            inClass = 'pt-page-rotateCubeLeftIn';
            outClass = 'pt-page-rotateCubeLeftOut pt-page-ontop';
            break;
        case 59:
            inClass = 'pt-page-rotateCubeRightIn';
            outClass = 'pt-page-rotateCubeRightOut pt-page-ontop';
            break;
        case 60:
            inClass = 'pt-page-rotateCubeTopIn';
            outClass = 'pt-page-rotateCubeTopOut pt-page-ontop';
            break;
        case 61:
            inClass = 'pt-page-rotateCubeBottomIn';
            outClass = 'pt-page-rotateCubeBottomOut pt-page-ontop';
            break;
        case 62:
            inClass = 'pt-page-rotateCarouselLeftIn';
            outClass = 'pt-page-rotateCarouselLeftOut pt-page-ontop';
            break;
        case 63:
            inClass = 'pt-page-rotateCarouselRightIn';
            outClass = 'pt-page-rotateCarouselRightOut pt-page-ontop';
            break;
        case 64:
            inClass = 'pt-page-rotateCarouselTopIn';
            outClass = 'pt-page-rotateCarouselTopOut pt-page-ontop';
            break;
        case 65:
            inClass = 'pt-page-rotateCarouselBottomIn';
            outClass = 'pt-page-rotateCarouselBottomOut pt-page-ontop';
            break;
        case 66:
            inClass = 'pt-page-rotateSidesIn pt-page-delay200';
            outClass = 'pt-page-rotateSidesOut';
            break;
        case 67:
            inClass = 'pt-page-rotateSlideIn';
            outClass = 'pt-page-rotateSlideOut';
            break;
        }

        // This will get the pt-trigger elements parent wrapper div
        var $pageWrapper = $pageTrigger.closest('.pt-wrapper');
        var currentPageIndex = $pageWrapper.data('current'),
            tempPageIndex,
            $pages = $pageWrapper.children('div.pt-page'),
            pagesCount = $pages.length,
            endCurrentPage = false,
            endNextPage = false;

        gotoPage = parseInt($pageTrigger.data('goto'));

        // check if 'data-goto' value is greater than total pages inside 'pt-wrapper'
        if (!(pagesCount < gotoPage)) {

            tempPageIndex = currentPageIndex;

            if ($pageWrapper.data('isAnimating')) {
                return false;
            }

            // Setting the isAnimating property to true.
            $pageWrapper.data('isAnimating', true);

            // Current page to be removed.
            var $currentPage = $pages.eq(currentPageIndex);

            // Checking gotoPage value and decide what to do
            // -1 Go to next page
            // -2 Go to previous page
            // 0+ Go to custom page number.
            // NEXT PAGE
            if (gotoPage == -1) {

                // Incrementing page counter to diplay next page
                if (currentPageIndex < pagesCount - 1) {
                    ++currentPageIndex;
                } else {
                    currentPageIndex = 0;
                }
            }
            // PREVOUS PAGE
            else if (gotoPage == -2) {
                if (currentPageIndex == 0) {
                    currentPageIndex = pagesCount - 1;

                } else if (currentPageIndex <= pagesCount - 1) {
                    --currentPageIndex;
                } else {
                    currentPageIndex = 0;
                }

            }
            // GOTO PAGE
            else {
                currentPageIndex = gotoPage - 1;
            }

            // Check if the current page is same as the next page then do not do the animation
            // else reset the 'isAnimatiing' flag
            if (tempPageIndex != currentPageIndex) {
                $pageWrapper.data('current', currentPageIndex);

                // Next page to be animated.
                var $nextPage = $pages.eq(currentPageIndex).addClass('pt-page-current');

                $currentPage.addClass(outClass).on(animEndEventName, function () {
                    $currentPage.off(animEndEventName);
                    endCurrentPage = true;
                    if (endNextPage) {
                        onEndAnimation($pageWrapper, $nextPage, $currentPage, $pageTrigger);
                    }
                });

                $nextPage.addClass(inClass).on(animEndEventName, function () {
                    $nextPage.off(animEndEventName);
                    endNextPage = true;
                    if (endCurrentPage) {
                        onEndAnimation($pageWrapper, $nextPage, $currentPage, $pageTrigger);
                    }
                });

            } else {
                $pageWrapper.data('isAnimating', false);
            }

        } else {
            alert("Transition.js : Invalid 'data-goto' attribute configuration.");
        }

        // Check if the animation is supported by browser and reset the pages.
        if (!support) {
            onEndAnimation($currentPage, $nextPage, $pageTrigger);
        }

    }

    function onEndAnimation($pageWrapper, $nextPage, $currentPage, $pageTrigger) {
        resetPage($nextPage, $currentPage);
        $pageWrapper.data('isAnimating', false);
        pageOverflows($pageTrigger);
        pageNavColors($pageTrigger);
    }

    function resetPage($nextPage, $currentPage) {
        $currentPage.attr('class', $currentPage.data('originalClassList'));
        $nextPage.attr('class', $nextPage.data('originalClassList') + ' pt-page-current');
    }

    function pageOverflows($pageTrigger) {
        var gotoPage = parseInt($pageTrigger.data('goto'));
        if (gotoPage == 1) {
            $(".pt-wrapper").find('.pt-page').addClass('no-overflow');
            $("#backSlider").removeClass('backSliderOver');
        } else {
            $(".pt-wrapper").find('.pt-page').removeClass('no-overflow');
            $("#backSlider").addClass('backSliderOver');
        }
    }

    function pageNavColors($pageTrigger) {
        var style = $pageTrigger.attr('data-style');
        $('#mainNav').removeClass('lightNav').removeClass('darkNav').addClass(style);
        var styleNav = $pageTrigger.attr('data-style2');
        $('.pt-trigger-container').removeClass('aboutmeNav').removeClass('workNav').removeClass('postNav').removeClass('blogNav').removeClass('contactNav');
        $('.pt-trigger-container').addClass(styleNav);
    }

    return {
        init: init,
    };

})();