'use strict';

/* --------------------------------------------------------------
 stickybox.js 2017-01-12
 Gambio GmbH
 http://www.gambio.de
 Copyright (c) 2017 Gambio GmbH
 Released under the GNU General Public License (Version 2)
 [http://www.gnu.org/licenses/gpl-2.0.html]
 --------------------------------------------------------------
 */

/**
 * Widget that keeps an element between the two elements in view
 */
gambio.widgets.module('stickybox', [gambio.source + '/libs/events', gambio.source + '/libs/responsive'], function (data) {

    'use strict';

    // ########## VARIABLE INITIALIZATION ##########

    var $this = $(this),
        $window = $(window),
        $header = null,
        $footer = null,
        $outerWrapper = null,
        bottom = null,
        top = null,
        elementHeight = null,
        elementWidth = null,
        elementOffset = null,
        fixedTopPosition = null,
        documentHeight = null,
        headerFixed = null,
        css = null,
        timer = null,
        initialOffset = null,
        initialTop = null,
        initialHeader = null,
        initialMarginTop = null,
        skipped = 0,
        checkFit = true,
        lastFit = null,
        defaults = {
        breakpoint: 60, // The breakpoint, since which this script calculates the position
        outerWrapper: '#outer-wrapper', // Selector to set the header's margin top
        header: 'header', // Selector to set the header height
        footer: '.product-info-listings, footer', // Selector to set the footer height
        offsetTopReferenceSelector: '#breadcrumb_navi, .product-info', // Reference selector to set the top position of the sticky box
        marginTop: 15, // Add a space between header/footer and content container
        marginBottom: 0, // Add a space between header/footer and content container
        zIndex: 1000, // Sets the z-index in fixed mode
        cpuOptimization: false, // If set to true, the number of events in "smoothness" gets skipped
        smoothness: 10, // The higher the value, the more scroll events gets skipped
        smoothnessDelay: 150, // The delay after the last scroll event the cpu optimization fires an recalculate event
        stage: '#stage', // Selector to set teaser slider height
        errorBox: 'table.box-error, table.box-warning' // Selector to set error box height
    },
        options = $.extend(true, {}, defaults, data),
        module = {};

    // ########## HELPER FUNCTIONS ##########

    /**
     * Calculates all necessary positions,
     * offsets and dimensions
     * @private
     */
    var _calculateDimensions = function _calculateDimensions() {
        top = $header.outerHeight();
        bottom = $footer.offset().top;
        top += options.marginTop;
        bottom -= options.marginBottom;

        elementHeight = $this.outerHeight();
        elementWidth = $this.outerWidth();
        elementOffset = elementOffset || $this.offset();

        documentHeight = $(document).height();

        var cssTop = options.marginTop;
        if (headerFixed) {
            cssTop = top;
        }

        css = {
            'position': 'fixed',
            'top': cssTop + 'px',
            'left': elementOffset.left + 'px',
            'z-index': options.zIndex,
            'width': elementWidth
        };
    };

    /**
     * Checks if the available space between
     * the header & footer is enough to set
     * the container sticky
     * @return         {boolean}           If true, there is enough space to set it sticky
     * @private
     */
    var _fitInView = function _fitInView() {

        if (checkFit) {
            checkFit = false;

            _resetPosition();

            window.setTimeout(function () {
                checkFit = true;
            }, 100);

            lastFit = document.documentElement.clientHeight - document.getElementById('header').offsetHeight;
        }

        return lastFit > elementHeight;
    };

    /**
     * Helper function that gets called on scroll. In case
     * the content could be displayed without being sticky,
     * the sticky-styles were removed, else a check is
     * performed if the top of the element needs to be
     * adjusted in case that it would overlap with the
     * footer otherwise.
     * @param       {number}     scrollPosition      Current scroll position of the page
     * @private
     */
    var _calcPosition = function _calcPosition(scrollPosition) {
        if (headerFixed) {
            var elementBottom = scrollPosition + top + elementHeight + options.marginBottom,
                overlapping = elementBottom - bottom,
                currentTop = parseFloat($this.css('top')),
                newTop = initialTop - (initialHeader - top) + scrollPosition;

            newTop = newTop < initialTop ? initialTop : newTop;
            newTop -= overlapping - top;

            if (top + scrollPosition <= elementOffset.top) {
                _resetPosition();
            } else if (overlapping > 0) {
                if (bottom - scrollPosition < elementHeight + initialHeader - initialTop) {
                    newTop = bottom - elementHeight - initialHeader + initialTop - initialMarginTop;
                    _resetPosition();
                    $this.css({ top: newTop + 'px' });
                } else if (Math.abs(currentTop - newTop) >= 0.5) {
                    _resetPosition();
                    $this.css({ top: newTop + 'px' });
                }
            } else if ($this.css('position') !== 'fixed' || $this.css('top') !== css.top) {
                $this.css(css);
            }
        } else {
            if (scrollPosition <= elementOffset.top - options.marginTop) {
                _resetPosition();
            } else if (bottom - scrollPosition + options.marginTop < elementHeight - initialTop - options.marginTop) {
                newTop = bottom - elementHeight - initialHeader + initialTop - initialMarginTop;
                _resetPosition();
                $this.css({ top: newTop + 'px' });
            } else if ($this.css('position') !== 'fixed' || $this.css('top') !== css.top) {
                $this.css(css);
            }
        }
    };

    /**
     * In case that the CPU optimization
     * is enabled, skipp a certain count
     * of scroll events before recalculating
     * the position.
     * @return     {boolean}           True if this event shall be processed
     * @private
     */
    var _cpuOptimization = function _cpuOptimization() {
        skipped += 1;
        clearTimeout(timer);
        if (skipped < options.smoothness) {
            timer = setTimeout(function () {
                $window.trigger('scroll.stickybox', true);
            }, options.smoothnessDelay);
            return false;
        }
        skipped = 0;
        return true;
    };

    /**
     * Set the initial top position of the sticky box. A correction is necessary, if the breadcrumb is longer than
     * one line.
     *
     * @private
     */
    var _fixInitialTopPosition = function _fixInitialTopPosition() {
        var offsetTop = $this.offset().top,
            targetOffsetTop = $(options.offsetTopReferenceSelector).first().offset().top,
            offsetDifference = offsetTop - targetOffsetTop,
            topPosition = parseFloat($this.css('top'));

        fixedTopPosition = topPosition - offsetDifference;

        _resetPosition();
    };

    /**
     * Restore initial position of the sticky box by removing its style attribute and setting the fixed top position.
     *
     * @private
     */
    var _resetPosition = function _resetPosition() {
        $this.removeAttr('style');

        if (jse.libs.theme.responsive.breakpoint().name === 'md' || jse.libs.theme.responsive.breakpoint().name === 'lg') {
            $this.css('top', fixedTopPosition + 'px');
        } else {
            $this.css('top', '');
        }
    };

    // ########## EVENT HANDLER ##########

    /**
     * Event handler for the scroll event. It gets the
     * upper border of the content element and calls
     * individual methods depending on the sticky state.
     * To perform better on low end CPUs it checks if
     * scroll events shall be skipped.
     * @private
     */
    var _checkPosition = function _checkPosition(e, d) {

        if (options.cpuOptimization && !d && !_cpuOptimization()) {
            return true;
        }

        if (jse.libs.theme.responsive.breakpoint().id > options.breakpoint) {
            _calculateDimensions();
            var scrollPosition = $window.scrollTop(),
                fit = _fitInView();

            if (fit) {
                _calcPosition(scrollPosition);
            }
        }
    };

    /**
     * Handler for the resize event. On browser
     * resize it is resetting the state to calculate
     * a new position
     * @private
     */
    var _resizeHandler = function _resizeHandler() {
        _resetPosition();
        elementOffset = null;
        skipped = 0;
        initialOffset = $this.offset().top;

        _checkPosition();
    };

    // ########## INITIALIZATION ##########

    /**
     * Init function of the widget
     * @constructor
     */
    module.init = function (done) {
        var sliderHeight = 0,
            errorBoxHeight = 0,
            marginTop = 0,
            marginBottom = 0;

        $outerWrapper = $(options.outerWrapper);
        $header = $(options.header);
        $footer = $(options.footer);

        if ($(options.stage).length > 0) {
            sliderHeight = $(options.stage).outerHeight();
        }

        $(options.errorBox).each(function () {
            marginTop = parseInt($(this).css('margin-top'), 10);
            marginBottom = parseInt($(this).css('margin-bottom'), 10);

            errorBoxHeight += $(this).outerHeight();
            errorBoxHeight += marginTop;
            errorBoxHeight += marginBottom;
        });

        var errorBoxElements = $(options.errorBox).length;

        if (errorBoxElements >= 2) {
            errorBoxHeight = errorBoxHeight - marginTop * (errorBoxElements - 1);
        }

        _fixInitialTopPosition();

        initialOffset = $this.offset().top;
        initialTop = parseFloat($this.css('top'));
        initialHeader = $header.outerHeight() + options.marginTop + sliderHeight + errorBoxHeight;
        initialMarginTop = parseFloat($outerWrapper.css('margin-top').replace(/[^\d]/, ''));
        headerFixed = $header.css('position') === 'fixed';

        if (!jse.core.config.get('mobile')) {
            _checkPosition();

            $window.on('resize', _resizeHandler).on('scroll.stickybox', _checkPosition).on(jse.libs.theme.events.REPOSITIONS_STICKYBOX(), _resizeHandler);
        } else {
            $('body').on(jse.libs.theme.events.BREAKPOINT(), _fixInitialTopPosition);
        }

        done();
    };

    // Return data to widget engine
    return module;
});
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--------------------------------------------------------------\n stickybox.js 2017-01-12\n Gambio GmbH\n http://www.gambio.de\n Copyright (c) 2017 Gambio GmbH\n Released under the GNU General Public License (Version 2)\n [http://www.gnu.org/licenses/gpl-2.0.html]\n --------------------------------------------------------------\n */\n\n/**\n * Widget that keeps an element between the two elements in view\n */\ngambio.widgets.module(\n    'stickybox',\n\n    [\n        gambio.source + '/libs/events',\n        gambio.source + '/libs/responsive'\n    ],\n\n    function (data) {\n\n        'use strict';\n\n// ########## VARIABLE INITIALIZATION ##########\n\n        var $this = $(this),\n            $window = $(window),\n            $header = null,\n            $footer = null,\n            $outerWrapper = null,\n            bottom = null,\n            top = null,\n            elementHeight = null,\n            elementWidth = null,\n            elementOffset = null,\n            fixedTopPosition = null,\n            documentHeight = null,\n            headerFixed = null,\n            css = null,\n            timer = null,\n            initialOffset = null,\n            initialTop = null,\n            initialHeader = null,\n            initialMarginTop = null,\n            skipped = 0,\n            checkFit = true,\n            lastFit = null,\n            defaults = {\n                breakpoint: 60, // The breakpoint, since which this script calculates the position\n                outerWrapper: '#outer-wrapper', // Selector to set the header's margin top\n                header: 'header', // Selector to set the header height\n                footer: '.product-info-listings, footer', // Selector to set the footer height\n                offsetTopReferenceSelector: '#breadcrumb_navi, .product-info', // Reference selector to set the top position of the sticky box\n                marginTop: 15, // Add a space between header/footer and content container\n                marginBottom: 0, // Add a space between header/footer and content container\n                zIndex: 1000, // Sets the z-index in fixed mode\n                cpuOptimization: false, // If set to true, the number of events in \"smoothness\" gets skipped\n                smoothness: 10, // The higher the value, the more scroll events gets skipped\n                smoothnessDelay: 150, // The delay after the last scroll event the cpu optimization fires an recalculate event\n                stage: '#stage', // Selector to set teaser slider height\n                errorBox: 'table.box-error, table.box-warning' // Selector to set error box height\n            },\n            options = $.extend(true, {}, defaults, data),\n            module = {};\n\n// ########## HELPER FUNCTIONS ##########\n\n        /**\n         * Calculates all necessary positions,\n         * offsets and dimensions\n         * @private\n         */\n        var _calculateDimensions = function () {\n            top = $header.outerHeight();\n            bottom = $footer.offset().top;\n            top += options.marginTop;\n            bottom -= options.marginBottom;\n\n            elementHeight = $this.outerHeight();\n            elementWidth = $this.outerWidth();\n            elementOffset = elementOffset || $this.offset();\n\n            documentHeight = $(document).height();\n\n            var cssTop = options.marginTop;\n            if (headerFixed) {\n                cssTop = top;\n            }\n\n            css = {\n                'position': 'fixed',\n                'top': cssTop + 'px',\n                'left': elementOffset.left + 'px',\n                'z-index': options.zIndex,\n                'width': elementWidth\n            };\n        };\n\n        /**\n         * Checks if the available space between\n         * the header & footer is enough to set\n         * the container sticky\n         * @return         {boolean}           If true, there is enough space to set it sticky\n         * @private\n         */\n        var _fitInView = function () {\n\n            if (checkFit) {\n                checkFit = false;\n\n                _resetPosition();\n\n                window.setTimeout(function () {\n                    checkFit = true;\n                }, 100);\n\n                lastFit = document.documentElement.clientHeight - document.getElementById('header').offsetHeight;\n            }\n\n            return lastFit > elementHeight;\n        };\n\n        /**\n         * Helper function that gets called on scroll. In case\n         * the content could be displayed without being sticky,\n         * the sticky-styles were removed, else a check is\n         * performed if the top of the element needs to be\n         * adjusted in case that it would overlap with the\n         * footer otherwise.\n         * @param       {number}     scrollPosition      Current scroll position of the page\n         * @private\n         */\n        var _calcPosition = function (scrollPosition) {\n            if (headerFixed) {\n                var elementBottom = scrollPosition + top + elementHeight + options.marginBottom,\n                    overlapping = elementBottom - bottom,\n                    currentTop = parseFloat($this.css('top')),\n                    newTop = initialTop - (initialHeader - top) + scrollPosition;\n\n                newTop = (newTop < initialTop) ? initialTop : newTop;\n                newTop -= overlapping - top;\n\n                if (top + scrollPosition <= elementOffset.top) {\n                    _resetPosition();\n                } else if (overlapping > 0) {\n                    if (bottom - scrollPosition < elementHeight + initialHeader - initialTop) {\n                        newTop = bottom - elementHeight - initialHeader + initialTop - initialMarginTop;\n                        _resetPosition();\n                        $this.css({top: newTop + 'px'});\n                    } else if (Math.abs(currentTop - newTop) >= 0.5) {\n                        _resetPosition();\n                        $this.css({top: newTop + 'px'});\n                    }\n                } else if ($this.css('position') !== 'fixed' || $this.css('top') !== css.top) {\n                    $this.css(css);\n                }\n            } else {\n                if (scrollPosition <= elementOffset.top - options.marginTop) {\n                    _resetPosition();\n                } else if (bottom - scrollPosition + options.marginTop < elementHeight - initialTop - options.marginTop) {\n                    newTop = bottom - elementHeight - initialHeader + initialTop - initialMarginTop;\n                    _resetPosition();\n                    $this.css({top: newTop + 'px'});\n                } else if ($this.css('position') !== 'fixed' || $this.css('top') !== css.top) {\n                    $this.css(css);\n                }\n            }\n\n        };\n\n        /**\n         * In case that the CPU optimization\n         * is enabled, skipp a certain count\n         * of scroll events before recalculating\n         * the position.\n         * @return     {boolean}           True if this event shall be processed\n         * @private\n         */\n        var _cpuOptimization = function () {\n            skipped += 1;\n            clearTimeout(timer);\n            if (skipped < options.smoothness) {\n                timer = setTimeout(function () {\n                    $window.trigger('scroll.stickybox', true);\n                }, options.smoothnessDelay);\n                return false;\n            }\n            skipped = 0;\n            return true;\n        };\n\n        /**\n         * Set the initial top position of the sticky box. A correction is necessary, if the breadcrumb is longer than\n         * one line.\n         *\n         * @private\n         */\n        var _fixInitialTopPosition = function () {\n            var offsetTop = $this.offset().top,\n                targetOffsetTop = $(options.offsetTopReferenceSelector).first().offset().top,\n                offsetDifference = offsetTop - targetOffsetTop,\n                topPosition = parseFloat($this.css('top'));\n\n            fixedTopPosition = topPosition - offsetDifference;\n\n            _resetPosition();\n        };\n\n        /**\n         * Restore initial position of the sticky box by removing its style attribute and setting the fixed top position.\n         *\n         * @private\n         */\n        var _resetPosition = function () {\n            $this.removeAttr('style');\n\n            if (jse.libs.theme.responsive.breakpoint().name === 'md'\n                || jse.libs.theme.responsive.breakpoint().name === 'lg') {\n                $this.css('top', fixedTopPosition + 'px');\n            } else {\n                $this.css('top', '');\n            }\n        };\n\n\n// ########## EVENT HANDLER ##########\n\n        /**\n         * Event handler for the scroll event. It gets the\n         * upper border of the content element and calls\n         * individual methods depending on the sticky state.\n         * To perform better on low end CPUs it checks if\n         * scroll events shall be skipped.\n         * @private\n         */\n        var _checkPosition = function (e, d) {\n\n            if (options.cpuOptimization && !d && !_cpuOptimization()) {\n                return true;\n            }\n\n            if (jse.libs.theme.responsive.breakpoint().id > options.breakpoint) {\n                _calculateDimensions();\n                var scrollPosition = $window.scrollTop(),\n                    fit = _fitInView();\n\n                if (fit) {\n                    _calcPosition(scrollPosition);\n                }\n            }\n        };\n\n        /**\n         * Handler for the resize event. On browser\n         * resize it is resetting the state to calculate\n         * a new position\n         * @private\n         */\n        var _resizeHandler = function () {\n            _resetPosition();\n            elementOffset = null;\n            skipped = 0;\n            initialOffset = $this.offset().top;\n\n            _checkPosition();\n        };\n\n\n// ########## INITIALIZATION ##########\n\n        /**\n         * Init function of the widget\n         * @constructor\n         */\n        module.init = function (done) {\n            var sliderHeight = 0,\n                errorBoxHeight = 0,\n                marginTop = 0,\n                marginBottom = 0;\n\n            $outerWrapper = $(options.outerWrapper);\n            $header = $(options.header);\n            $footer = $(options.footer);\n\n            if ($(options.stage).length > 0) {\n                sliderHeight = $(options.stage).outerHeight();\n            }\n\n            $(options.errorBox).each(function () {\n                marginTop = parseInt($(this).css('margin-top'), 10);\n                marginBottom = parseInt($(this).css('margin-bottom'), 10);\n\n                errorBoxHeight += $(this).outerHeight();\n                errorBoxHeight += marginTop;\n                errorBoxHeight += marginBottom;\n            });\n\n            var errorBoxElements = $(options.errorBox).length;\n\n            if (errorBoxElements >= 2) {\n                errorBoxHeight = errorBoxHeight - (marginTop * (errorBoxElements - 1));\n            }\n\n            _fixInitialTopPosition();\n\n            initialOffset = $this.offset().top;\n            initialTop = parseFloat($this.css('top'));\n            initialHeader = $header.outerHeight() + options.marginTop + sliderHeight + errorBoxHeight;\n            initialMarginTop = parseFloat($outerWrapper.css('margin-top').replace(/[^\\d]/, ''));\n            headerFixed = $header.css('position') === 'fixed';\n\n            if (!jse.core.config.get('mobile')) {\n                _checkPosition();\n\n                $window\n                    .on('resize', _resizeHandler)\n                    .on('scroll.stickybox', _checkPosition)\n                    .on(jse.libs.theme.events.REPOSITIONS_STICKYBOX(), _resizeHandler);\n            } else {\n                $('body').on(jse.libs.theme.events.BREAKPOINT(), _fixInitialTopPosition);\n            }\n\n            done();\n        };\n\n        // Return data to widget engine\n        return module;\n    });\n"]}