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menu(parent) {\n    \n    const DATASET_FOCUS = 'focusindex';\n    const STATE_CLOSED = 'tw-arrow-down';\n    const STATE_OPEN = 'tw-arrow-up';\n    const STATE_FOCUS = 'tw-ddlNav-focus';\n    const items = [];    \n    const mainSection = document.querySelector('body > main');\n\n    const getParentHeight = () => {\n        return parent.parentElement.getBoundingClientRect().height;\n    };\n\n    if (!mainSection) {\n        console.warn('ddlNav.js -> Main section cannot be found.');\n        return;\n    }\n    \n    const anchorTo = (item) => {\n        \n        const element = positions.find(x => { return x.id === item.anchor });\n        \n        if (element) {\n\n            let position = 0;\n\n            if (element.id === items[0].anchor) {\n                position = 0;\n            } else {\n\n                const mainNavHeight = mainSection.offsetTop;\n                let offset = parentHeight + mainNavHeight;\n                if (parentHeight > mainNavHeight) {\n                    offset += parentHeight - mainNavHeight;\n                }\n\n                position = element.top - offset;\n            }\n            \n            mainSection.scrollTo(0, position);\n        }\n    }\n\n    const clamp = (value) => Math.max(0, value);\n\n    const isBetween = (value, floor, ceil) => value >= floor && value <= ceil;\n\n    const getPosition = (anchor) => {\n        \n        const element = document.getElementById(anchor);\n\n        if (!element)\n            return { id: anchor, top: -1, bottom: -1 };\n\n        const rect = element.getBoundingClientRect();\n        const top = clamp(rect.top);\n        const bottom = clamp(rect.bottom);\n\n        return { id: anchor, top, bottom };        \n    };\n\n    const listener = (positions, scroll) => {\n\n        if (!isScrolling) {\n\n            const mainNavHeight = mainSection.offsetTop;\n            let offset = parentHeight + mainNavHeight;\n            if (parentHeight > mainNavHeight) {\n                offset += parentHeight - mainNavHeight;\n            }\n\n            const position = scroll + offset;\n\n            const anchorInRange = positions.find(({ top, bottom }) => isBetween(position, top, bottom));\n\n            if (anchorInRange) {\n\n                const anchorItems = this.GetItemsByAnchor(anchorInRange.id);\n\n                for (let i = 0, l = anchorItems.length; i < l; i++) {\n\n                    if (anchorItems[i].type === 'mobile')\n                        this.SetFocus(anchorItems[i]);\n\n                    this.SetFocusOnItem(anchorItems[i]);\n                }\n\n            }\n        }\n    };\n\n    const setListener = (event) => {\n\n        listener(positions, event.srcElement.scrollTop);\n    };\n\n    const setPositions = () => {\n\n        positions = [];\n\n        for (let i = 0, l = items.length; i < l; i++) {\n\n            if (items[i].anchor !== '') {\n                const anchor = items[i].anchor;\n                const position = getPosition(anchor);\n                positions.push(position);\n            }\n        }\n    };\n\n    this.FocusedItem = parent.querySelector(`[data-${DATASET_FOCUS}]`);\n\n    if (!this.FocusedItem) {\n        console.warn\n            (`The ddlNav feature is missing an element to apply focus. Attribute should be data-${DATASET_FOCUS}`);\n        return;\n    }\n        \n    this.CloseMenu = () => {\n\n        this.FocusedItem.classList.remove(STATE_OPEN);\n        this.FocusedItem.classList.add(STATE_CLOSED);\n\n        for (let i = 0, l = items.length; i < l; i++) {\n            if (items[i].type === 'mobile')\n                items[i].element.style.display = 'none';         \n        }\n    };\n\n    this.GetItem = (index) => {\n\n        for (let i = 0, l = items.length; i < l; i++) {\n            if (items[i].index === index)\n                return items[i];\n        }\n\n        return undefined;\n    };\n\n    this.GetItemsByAnchor = (anchor) => {\n\n        const anchorItems = [];\n\n        for (let i = 0, l = items.length; i < l; i++) {\n            if (items[i].anchor === anchor)\n                anchorItems.push(items[i]);\n        }\n\n        return anchorItems;\n    }\n\n    this.GoTo = (item) => {\n\n        if (item.anchor !== '') {\n            anchorTo(item);\n        } else {\n            location.href = item.href;\n        }\n    };\n\n    this.IsOpen = () => {\n        return this.FocusedItem.classList.contains('tw-arrow-up');\n    };\n\n\n    let initialWidth = window.innerWidth;\n\n    this.OnResize = () => {\n        let currentWidth = window.innerWidth;\n        let widthDifference = Math.abs(currentWidth - initialWidth);\n\n        if (new Date() - resizeRunTime < resizeDelta) {\n            setTimeout(this.OnResize, resizeDelta);\n        } else {\n            if (widthDifference > 500) {\n                location.reload();\n                console.log(\"ACTIVE!\");\n            }\n            // Update initial width and resizeRunTime\n            initialWidth = currentWidth;\n            resizeRunTime = new Date();\n        }\n    };\n\n    this.OpenMenu = () => {\n\n        this.FocusedItem.classList.remove(STATE_CLOSED);\n        this.FocusedItem.classList.add(STATE_OPEN);\n\n        for (let i = 0, l = items.length; i < l; i++) {   \n            if(items[i].type === 'mobile')\n                items[i].element.style.display = 'block';\n        }\n    };\n    \n    this.Set = (index) => {\n\n        if (isScrolling) {\n            setTimeout(() => { this.Set(index); }, 100);\n            return;\n        }\n\n        const item = this.GetItem(index);\n\n        if (item === undefined)\n            return;\n\n        this.SetFocus(item)\n\n        this.SetFocusOnItem(item);\n\n        isScrolling = true;\n\n        this.GoTo(item);\n\n        setTimeout(() => { isScrolling = false; }, 800);\n\n        this.CloseMenu();\n    };\n\n    this.SetFocus = (item) => {\n\n        this.FocusedItem.innerHTML = item.element.innerHTML;\n        this.FocusedItem.dataset[DATASET_FOCUS] = item.index;\n    };\n\n    this.SetFocusOnItem = (item) => {\n\n        item.isSelected = true;\n\n        for (let i = 0, l = items.length; i < l; i++) {\n\n            if (items[i].anchor !== '' && items[i].anchor === item.anchor) {                \n                items[i].element.classList.add(STATE_FOCUS);                \n            } else {\n                items[i].element.classList.remove(STATE_FOCUS);\n                items[i].isSelected = false;\n            }\n        }\n    };\n\n    this.SetScrollListener = () => {\n\n        if (isListenerSet)\n            mainSection.removeEventListener('scroll', setListener);\n\n        setPositions();\n\n        mainSection.addEventListener('scroll', setListener);\n\n        resizeScrolling = true;\n        isListenerSet = true;\n    };\n\n    this.ToggleMenu = () => {\n\n        const isOpen = this.IsOpen();\n\n        if (isOpen)\n            this.CloseMenu();\n        else\n            this.OpenMenu();\n    };\n\n    const indexItems = parent.querySelectorAll('[data-index]');\n\n    let isSelected = undefined;\n    let parentHeight = getParentHeight();\n    let isScrolling = false;\n    let isListenerSet = false;\n    let isResizing = false;\n    let positions = [];\n    let resizeDelta = 500;\n    let resizeRunTime;\n    let resizeScrolling = false;\n    let resizeTimeOut = false;\n    \n    for (let i = 0, l = indexItems.length; i < l; i++) {\n\n        const index = parseInt(indexItems[i].dataset['index']);\n        if (isNaN(index))\n            continue;\n\n        const href = indexItems[i].dataset['href'];\n        if (!href)\n            continue;\n\n        const element = indexItems[i];\n        const self = this;\n        const anchor = href.indexOf('#') === 0 ? href.substr(1, href.length) : '';\n        const type = indexItems[i].dataset['type'] === 'desktop' ? 'desktop' : 'mobile';\n        \n        element.addEventListener('click', (e) => { self.Set(index); });\n\n        isSelected = isSelected === undefined && element.dataset['selected'] === 'true';\n\n        items.push({ index, href, isSelected, anchor, type, element });\n    } \n\n    this.FocusedItem.addEventListener('click', (e) => { this.ToggleMenu(); });\n\n    window.addEventListener('resize', (event) => {\n        resizeRunTime = new Date();\n        if (!resizeTimeOut) {\n            resizeTimeOut = true;\n            setTimeout(this.OnResize, resizeDelta);\n        }\n    });\n}\n\nexport default async element => { // feature=\"ddlNav\"\n\n    const ddlMenu = new menu(element);\n\n    const firstItem = ddlMenu.GetItem(0);\n\n    if (firstItem !== undefined && !firstItem.isSelected && ddlMenu.IsOpen())\n        ddlMenu.Set(0);\n\n    ddlMenu.SetScrollListener();\n};"],"names":["menu","parent","DATASET_FOCUS","STATE_CLOSED","STATE_OPEN","STATE_FOCUS","items","mainSection","document","querySelector","getParentHeight","parentElement","getBoundingClientRect","height","console","warn","anchorTo","item","element","positions","find","x","id","anchor","position","mainNavHeight","offsetTop","offset","parentHeight","top","scrollTo","clamp","value","Math","max","isBetween","floor","ceil","getPosition","getElementById","bottom","rect","listener","scroll","isScrolling","anchorInRange","anchorItems","GetItemsByAnchor","i","l","length","type","SetFocus","SetFocusOnItem","setListener","event","srcElement","scrollTop","setPositions","push","FocusedItem","CloseMenu","classList","remove","add","style","display","GetItem","index","undefined","GoTo","location","href","IsOpen","contains","initialWidth","window","innerWidth","OnResize","currentWidth","widthDifference","abs","Date","resizeRunTime","resizeDelta","setTimeout","reload","log","OpenMenu","Set","innerHTML","dataset","isSelected","SetScrollListener","isListenerSet","removeEventListener","addEventListener","resizeScrolling","ToggleMenu","isOpen","indexItems","querySelectorAll","isResizing","resizeTimeOut","parseInt","isNaN","self","indexOf","substr","e","ddlMenu","firstItem"],"sourceRoot":""}