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Motor Museum Trust/./wwwroot/app/src/js/global.js","webpack://National Motor Museum Trust/./wwwroot/app/src/js/keyboard-accessibility-check.js","webpack://National Motor Museum Trust/./wwwroot/app/src/js/main-navigation.js"],"sourcesContent":["// ***********************************\r\n// *****  global site variables  *****\r\n// ***********************************\r\n\r\nconst detectReducedMotionPref = window.matchMedia('(prefers-reduced-motion: reduce)');\r\n\r\nexport const siteSettings = {\r\n    reducedMotionPref: detectReducedMotionPref.matches\r\n}\r\n\r\nexport const viewport = {\r\n    vw: 0,\r\n    vh: 0,\r\n    setVw: (val) => {\r\n        viewport.vw = val;\r\n    },\r\n    setVh: (val) => {\r\n        viewport.vh = val;\r\n    }\r\n}\r\n\r\nexport const mainNavigation = {\r\n    mobileActive: false,\r\n    setMobileActive: (mode) => {\r\n        mainNavigation.mobileActive = mode;\r\n    },\r\n    desktopActive: false,\r\n    setDesktopActive: (mode) => {\r\n        mainNavigation.desktopActive = mode;\r\n    }\r\n};\r\n\r\nexport const headerSearch = {\r\n    active: false,\r\n    setActive: (mode) => {\r\n        headerSearch.active = mode;\r\n    }\r\n};","// keyboard control detection\r\n\r\nexport const keyboardControl = {\r\n    active: false\r\n}\r\n\r\nlet accessibilityTimeout = null;\r\nconst toggleAccessibilityClass = (mode) => {\r\n    clearTimeout(accessibilityTimeout);\r\n    accessibilityTimeout = setTimeout(() => {\r\n        document.body.classList.toggle('keyboard-control', mode);\r\n        keyboardControl.active = mode;\r\n    }, 100);\r\n}\r\ndocument.body.addEventListener('keydown', function(e) {\r\n    switch (e.key) {\r\n        case 'Escape':\r\n        case 'Up':\r\n        case 'ArrowUp':\r\n        case 'Down':\r\n        case 'ArrowDown':\r\n        case 'Left':\r\n        case 'ArrowLeft':\r\n        case 'Tab':\r\n        case 'Right':\r\n        case 'ArrowRight':\r\n        case 'PageUp':\r\n        case 'PageDown':\r\n        case 'Spacebar':\r\n        case ' ':\r\n        case 'Enter':\r\n        case 'Return':\r\n            toggleAccessibilityClass(true);\r\n            break;\r\n    }\r\n});\r\ndocument.body.addEventListener('mousedown', function() {\r\n    toggleAccessibilityClass(false);\r\n});\r\ndocument.body.addEventListener('touchstart', function() {\r\n    toggleAccessibilityClass(false);\r\n});","// *****************************\r\n// *****  Main Navigation  *****\r\n// *****************************\r\nimport { breakPoint } from './config';\r\nimport { keyboardControl } from './keyboard-accessibility-check';\r\nimport { mainNavigation } from './global';\r\n\r\nconst $html = document.querySelector('html');\r\nlet isMobile = true,\r\n    resizeRequested = false;\r\n\r\nmainNavigation.setMobileActive(false);\r\nmainNavigation.setDesktopActive(false);\r\n\r\nclass menu {\r\n\r\n    constructor(wrapper, toggleButton, ul) {\r\n        this.wrapper = wrapper;\r\n        this.desktopSubmenuIndicator = wrapper.querySelector('.submenu--menu-indicator');\r\n        this.navContent = wrapper.querySelector('nav');\r\n        this.mobileToggle = toggleButton;\r\n        this.ul = ul;\r\n        this.expanded = false;\r\n        this.focusTimeout = null;\r\n        this.hideTimeout = null;\r\n        this.hideDelay = 500;\r\n        this.activeItemIndex = -1;\r\n        this.activeSubmenuItemIndex = -1;\r\n        this.items = [];\r\n        [...this.ul.querySelectorAll('.header--content--menu > nav > ul > li')].forEach(i => {\r\n            let x = this.items.length;\r\n            this.items[x] = new menuItem(x, i, 1);\r\n        });\r\n    }\r\n\r\n    show() {\r\n        // make menu semantically visible in both mobile and desktop versions\r\n        this.expanded = true;\r\n        this.wrapper.setAttribute('aria-hidden', false);\r\n        if(isMobile) {\r\n            // mobile - animate in the menu element\r\n            this.mobileToggle.setAttribute('aria-expanded', true);\r\n            $html.classList.add('mobile-menu-fading');\r\n            mainNavigation.setMobileActive(true);\r\n            window.requestAnimationFrame(() => {\r\n                $html.classList.add('mobile-menu-active');\r\n                this.wrapper.ontransitionend = () => {\r\n                    this.transitionEnd(true);\r\n                    this.update(true, 0, -1);\r\n                };\r\n            });\r\n        } else {\r\n            // desktop resets\r\n            mainNavigation.setMobileActive(false);\r\n            window.requestAnimationFrame(() => {\r\n                $html.classList.remove('mobile-menu-active');\r\n            });\r\n        }\r\n    }\r\n\r\n    hide() {\r\n        if(isMobile && mainNavigation.mobileActive) {\r\n            // mobile - animate out menu element\r\n            this.expanded = false;\r\n            mainNavigation.setMobileActive(false);\r\n            this.mobileToggle.setAttribute('aria-expanded', false);\r\n            $html.classList.add('mobile-menu-fading');\r\n            $html.classList.remove('mobile-menu-active');\r\n            this.wrapper.ontransitionend = () => {\r\n                this.transitionEnd(false);\r\n            };\r\n        } else {\r\n            // hide menu semantically in both mobile and desktop versions\r\n            this.expanded = false;\r\n            this.wrapper.setAttribute('aria-hidden', true);\r\n        }\r\n    }\r\n\r\n    transitionEnd(mode) {\r\n        if(!mode) {\r\n            // menu has hidden\r\n            this.wrapper.setAttribute('aria-hidden', true);\r\n        }\r\n        $html.classList.remove('mobile-menu-fading');\r\n        this.wrapper.ontransitionend = null;\r\n    }\r\n\r\n    storeTriggerPositions() {\r\n        for(let x = 0, l = this.items.length; x < l; x++) {\r\n            if(this.items[x].button != null) {\r\n                let b = this.items[x].button.getBoundingClientRect();\r\n                this.items[x].buttonX = Math.floor((b.left + b.right) / 2);\r\n            }\r\n        }\r\n        if(this.desktopSubmenuIndicator != null && this.activeItemIndex > -1) this.desktopSubmenuIndicator.style.left = `${this.items[this.activeItemIndex].buttonX - 16}px`;\r\n    }\r\n\r\n    update(setFocus = false, itemIndex = -1, submenuItemIndex = -1) {\r\n        if(!isMobile) this.storeTriggerPositions();\r\n        if (itemIndex > -1 && submenuItemIndex > -1) {\r\n\r\n            // FOCUS TARGET IS SUBMENU MENU ITEM\r\n\r\n            if (isMobile && !this.expanded) this.show();\r\n            // close old submenu without animation?\r\n            if (this.activeItemIndex > -1 && this.activeSubmenuItemIndex > -1 && itemIndex != this.activeItemIndex && this.items[this.activeItemIndex].submenu.expanded) this.items[this.activeItemIndex].submenu.hide(isMobile);\r\n            // desktop - update submenu indicator\r\n            if(this.desktopSubmenuIndicator != null) this.desktopSubmenuIndicator.style.left = `${this.items[itemIndex].buttonX - 15}px`;\r\n            // open new submenu\r\n            if (!this.items[itemIndex].submenu.expanded) this.items[itemIndex].submenu.show(isMobile || (this.activeItemIndex == -1 || this.activeSubmenuItemIndex == -1));\r\n            // focus on item\r\n            if (keyboardControl.active && setFocus) {\r\n                if(isMobile) {\r\n                    this.items[itemIndex].submenu.mobileItems[submenuItemIndex].focus();\r\n                } else {\r\n                    this.items[itemIndex].submenu.desktopItems[submenuItemIndex].focus();\r\n                }\r\n            }\r\n\r\n        } else if (itemIndex > -1) {\r\n\r\n            // FOCUS TARGET IS TOP-LEVEL MENU ITEM\r\n\r\n            if (isMobile && !this.expanded) this.show();\r\n            // close old submenu with animation?\r\n            if (this.activeItemIndex > -1 && this.items[this.activeItemIndex].hasSubmenu) {\r\n                if (this.items[this.activeItemIndex].submenu.expanded) this.items[this.activeItemIndex].submenu.hide(true);\r\n            }\r\n            // focus on item\r\n            if (keyboardControl.active && setFocus) {\r\n                if (this.items[itemIndex].hasSubmenu) {\r\n                    this.items[itemIndex].submenu.toggle.focus();\r\n                } else {\r\n                    this.items[itemIndex].link.focus();\r\n                }\r\n            }\r\n\r\n        } else {\r\n            if (this.activeItemIndex > -1 && this.activeSubmenuItemIndex > -1 && this.items[this.activeItemIndex].submenu.expanded) this.items[this.activeItemIndex].submenu.hide(!isMobile);\r\n            if (isMobile && this.expanded) {\r\n                this.hide();\r\n                if (keyboardControl.active && setFocus) this.mobileToggle.focus();\r\n            }\r\n        }\r\n        // update tabIndex setting\r\n        if (this.activeItemIndex != itemIndex) {\r\n            if (this.activeItemIndex > -1) {\r\n                if (this.items[this.activeItemIndex].hasSubmenu) {\r\n                    this.items[this.activeItemIndex].submenu.toggle.setAttribute('tabindex', '-1');\r\n                } else {\r\n                    this.items[this.activeItemIndex].link.setAttribute('tabindex', '-1');\r\n                }\r\n            }\r\n            let nextTabIndex = itemIndex;\r\n            if (!isMobile && nextTabIndex == -1) nextTabIndex = 0;\r\n            if (nextTabIndex > -1) {\r\n                if (this.items[nextTabIndex].hasSubmenu) {\r\n                    this.items[nextTabIndex].submenu.toggle.setAttribute('tabindex', '0');\r\n                } else {\r\n                    this.items[nextTabIndex].link.setAttribute('tabindex', '0');\r\n                }\r\n            }\r\n        }\r\n        // store new values\r\n        this.activeItemIndex = itemIndex;\r\n        this.activeSubmenuItemIndex = submenuItemIndex;\r\n    }\r\n}\r\n\r\nclass menuItem {\r\n    constructor(itemIndex, obj, level) {\r\n        this.level = level;\r\n        this.index = itemIndex;\r\n        this.li = obj;\r\n        this.button = obj.querySelector('button.submenu--toggle');\r\n        this.buttonX = 0;\r\n        let sub = obj.querySelector('div.submenu');\r\n        if (this.button && sub) {\r\n            this.hasSubmenu = true;\r\n            this.submenu = new subMenu(sub, this.button, level);\r\n        } else {\r\n            this.hasSubmenu = false;\r\n            this.link = obj.querySelector('a');\r\n        }\r\n    }\r\n}\r\n\r\nclass subMenu {\r\n    constructor(sub, button, level) {\r\n        this.expanded = false;\r\n        this.toggle = button;\r\n        this.wrapper = sub;\r\n        this.level = level;\r\n        this.closeBtn = this.wrapper.querySelector('.submenu--close');\r\n        this.inner = this.wrapper.querySelector('.submenu--content-area');\r\n        this.mobileItems = [];\r\n        [...this.inner.querySelectorAll('a:not(.ignore-mobile), button:not(.ignore-mobile)')].forEach(i => {\r\n            this.mobileItems.push(i);\r\n        });\r\n        this.desktopItems = [];\r\n        [...this.inner.querySelectorAll('a, button')].forEach(i => {\r\n            this.desktopItems.push(i);\r\n        });\r\n    }\r\n    show(animate) {\r\n        this.expanded = true;\r\n        this.wrapper.setAttribute('aria-hidden', false);\r\n        this.toggle.setAttribute('aria-expanded', true);\r\n        if(isMobile) {\r\n            this.wrapper.style.maxHeight = this.inner.offsetHeight + 'px';\r\n            if (animate) {\r\n                this.wrapper.classList.add('animate');\r\n                this.wrapper.ontransitionend = () => {\r\n                    this.wrapper.classList.remove('animate');\r\n                    if (this.level > 1 || isMobile) {\r\n                        this.wrapper.style.maxHeight = 'none';\r\n                        this.wrapper.ontransitionend = null;\r\n                    }\r\n                };\r\n            } else {\r\n                this.wrapper.style.maxHeight = 'none';\r\n            }\r\n        } else {\r\n            this.wrapper.style.maxHeight = 'none';\r\n            mainNavigation.setDesktopActive(true);\r\n            if (animate) {\r\n                window.requestAnimationFrame(() => {\r\n                    $html.classList.add('desktop-menu-fading');\r\n                    window.requestAnimationFrame(() => {\r\n                        $html.classList.add('desktop-menu-active');\r\n                        this.wrapper.ontransitionend = () => {\r\n                            $html.classList.remove('desktop-menu-fading');\r\n                            this.wrapper.ontransitionend = null;\r\n                        };\r\n                    });\r\n                });\r\n            } else {\r\n                $html.classList.add('desktop-menu-active');\r\n            }\r\n        }\r\n    }\r\n    hide(animate) {\r\n        this.expanded = false;\r\n        if (isMobile) {\r\n            this.wrapper.setAttribute('aria-hidden', true);\r\n            this.toggle.setAttribute('aria-expanded', false);\r\n            this.wrapper.style.maxHeight = this.inner.offsetHeight + 'px';\r\n            window.requestAnimationFrame(() => {\r\n                this.wrapper.style.maxHeight = 0;\r\n            });\r\n            if (animate) {\r\n                this.wrapper.classList.add('animate');\r\n                this.wrapper.ontransitionend = (e) => {\r\n                    if(e.target == this.wrapper) this.wrapper.classList.remove('animate');\r\n                };\r\n            }\r\n        } else {\r\n            mainNavigation.setDesktopActive(false);\r\n            if (animate) {\r\n                $html.classList.add('desktop-menu-fading');\r\n                $html.classList.remove('desktop-menu-active');\r\n                this.wrapper.ontransitionend = () => {\r\n                    this.wrapper.ontransitionend = null;\r\n                    $html.classList.remove('desktop-menu-fading');\r\n                    this.wrapper.setAttribute('aria-hidden', true);\r\n                    this.toggle.setAttribute('aria-expanded', false);\r\n                };\r\n            } else {\r\n                $html.classList.remove('desktop-menu-active');\r\n                this.wrapper.setAttribute('aria-hidden', true);\r\n                this.toggle.setAttribute('aria-expanded', false);\r\n            }\r\n        }\r\n    }\r\n}\r\n\r\n// create instance of menu\r\n\r\nif(document.querySelector('.header--content--menu') != null) {\r\n    const m = new menu(document.querySelector('.header--content--menu'), document.querySelector('.header--content--menu-toggle button'), document.querySelector('.header--content--menu > nav > ul'));\r\n\r\n\r\n    // mobile 'whole menu toggle' functionality\r\n\r\n    m.mobileToggle.addEventListener('click', () => {\r\n        if (isMobile) {\r\n            if (m.expanded) {\r\n                // close\r\n                m.hide();\r\n            } else {\r\n                // open\r\n                m.show();\r\n            }\r\n        }\r\n    });\r\n\r\n    // close menu if user focus moves outside\r\n\r\n    const bodyClickTouch = (t) => {\r\n        if (!isMobile && m.activeSubmenuItemIndex > -1) {\r\n            let inMenu = false;\r\n            while (t != document.body) {\r\n                if (t == m.wrapper) {\r\n                    inMenu = true;\r\n                    break\r\n                }\r\n                t = t.parentNode;\r\n            }\r\n            if (!inMenu) {\r\n                m.update();\r\n            }\r\n        }\r\n    }\r\n    document.body.addEventListener('click', (e) => {\r\n        bodyClickTouch(e.target);\r\n    });\r\n\r\n    // add menu item listeners\r\n\r\n    for (let x = 0, l = m.items.length; x < l; x++) {\r\n        let o = m.items[x];\r\n        if (o.hasSubmenu) {\r\n\r\n            o.submenu.toggle.addEventListener('click', () => {\r\n                clearTimeout(m.focusTimeout);\r\n                m.focusTimeout = null;\r\n                if (o.submenu.expanded) {\r\n                    m.update(true, o.index);\r\n                } else {\r\n                    m.update(true, o.index, 0);\r\n                }\r\n            });\r\n\r\n            o.submenu.toggle.addEventListener('focus', () => {\r\n                if (m.expanded && m.activeItemIndex != o.index) {\r\n                    clearTimeout(m.focusTimeout);\r\n                    m.focusTimeout = setTimeout(() => {\r\n                        m.update(true, o.index);\r\n                        m.focusTimeout = null;\r\n                    }, 250);\r\n                }\r\n            });\r\n\r\n            // add submenu expander listeners if required\r\n\r\n            let itemsArray = isMobile ? o.submenu.mobileItems : o.submenu.desktopItems;\r\n            for (let xx = 0, ll = itemsArray.length; xx < ll; xx++) {\r\n                let oo = itemsArray[xx];\r\n                if (oo.hasSubmenu) {\r\n                    oo.submenu.toggle.addEventListener('click', () => {\r\n                        m.update(true, o.index, oo.index);\r\n                    });\r\n                }\r\n            }\r\n\r\n            // desktop only - submenu close button\r\n\r\n            o.submenu.closeBtn.addEventListener('click', () => {\r\n                if (o.submenu.expanded) m.update(true, o.index);\r\n            });\r\n        }\r\n    }\r\n\r\n    // add keyboard accessibility\r\n    m.ul.addEventListener('keydown', (e) => {\r\n        switch (e.key) {\r\n            // ESCAPE jumps out a level\r\n            case 'Escape':\r\n                e.preventDefault();\r\n                if (m.activeSubmenuItemIndex > -1) {\r\n                    m.update(true, m.activeItemIndex);\r\n                } else {\r\n                    m.update(true);\r\n                }\r\n                break;\r\n            // DOWN / RIGHT to move through items at current level\r\n            case 'Down':\r\n            case 'ArrowDown':\r\n            case 'Right':\r\n            case 'ArrowRight':\r\n                e.preventDefault();\r\n                if (m.activeSubmenuItemIndex > -1) {\r\n                    let next = m.activeSubmenuItemIndex + 1,\r\n                        list = isMobile? m.items[m.activeItemIndex].submenu.mobileItems : m.items[m.activeItemIndex].submenu.desktopItems;\r\n                    if (next >= (isMobile ? list.length - 1 : list.length)) next = 0; // don't include submenu close button in mobile mode\r\n                    m.update(true, m.activeItemIndex, next);\r\n                } else {\r\n                    let next = m.activeItemIndex + 1,\r\n                        list = m.items;\r\n                    if (next >= list.length) next = 0;\r\n                    m.update(true, next);\r\n                }\r\n                break;\r\n            // UP / LEFT to move backwards through items at current level\r\n            case 'Up':\r\n            case 'ArrowUp':\r\n            case 'Left':\r\n            case 'ArrowLeft':\r\n                e.preventDefault();\r\n                if (m.activeSubmenuItemIndex > -1) {\r\n                    let next = m.activeSubmenuItemIndex - 1,\r\n                    list = isMobile? m.items[m.activeItemIndex].submenu.mobileItems : m.items[m.activeItemIndex].submenu.desktopItems;\r\n                    if (next < 0) next = isMobile ? list.length - 2 : list.length - 1; // don't include submenu close button in mobile mode\r\n                    m.update(true, m.activeItemIndex, next);\r\n                } else {\r\n                    let next = m.activeItemIndex - 1,\r\n                        list = m.items;\r\n                    if (next < 0) next = list.length - 1;\r\n                    m.update(true, next);\r\n                }\r\n                break;\r\n            // TAB close menu (if open) and move to next tab element\r\n            case 'Tab':\r\n                if(isMobile) {\r\n                    if (!m.hasSearch && m.activeItemIndex > -1) {\r\n                        m.hide();\r\n                    }\r\n                } else {\r\n                    m.update();\r\n                }\r\n                break;\r\n            // SPACE/ENTER/RETURN to click a item\r\n            case 'Spacebar':\r\n            case ' ':\r\n            case 'Enter':\r\n            case 'Return':\r\n                e.preventDefault();\r\n                if (m.activeSubmenuItemIndex > -1) {\r\n                    if(isMobile) {\r\n                        m.items[m.activeItemIndex].submenu.mobileItems[m.activeSubmenuItemIndex].click();\r\n                    } else {\r\n                        m.items[m.activeItemIndex].submenu.desktopItems[m.activeSubmenuItemIndex].click();\r\n                    }\r\n                } else {\r\n                    if (m.items[m.activeItemIndex].hasSubmenu) {\r\n                        m.items[m.activeItemIndex].submenu.toggle.click();\r\n                    } else {\r\n                        m.items[m.activeItemIndex].link.click();\r\n                    }\r\n                }\r\n                break;\r\n        }\r\n    });\r\n\r\n    // define and trigger resize check\r\n\r\n    const resize = () => {\r\n        let prev = isMobile;\r\n        isMobile = window.innerWidth < breakPoint.LG;\r\n        if(!isMobile) m.storeTriggerPositions();\r\n        if(isMobile !== prev) {\r\n            if(!isMobile) {\r\n                m.show();\r\n                m.update(false,1); // 'home' is hidden on desktop, so set menu to item 1 (without setting focus)\r\n            } else {\r\n                m.update(false);\r\n            }\r\n            // loop through all submenus and force close them\r\n            m.items.forEach(s => {\r\n                if(s.hasSubmenu) s.submenu.hide(false);\r\n            });\r\n            mainNavigation.setMobileActive(false);\r\n            m.mobileToggle.setAttribute('aria-expanded', false);\r\n            mainNavigation.setDesktopActive(false);\r\n            $html.classList.remove('mobile-menu-active');\r\n            $html.classList.remove('desktop-menu-active');\r\n        }\r\n    };\r\n\r\n    resize();\r\n    window.addEventListener('resize', () => {\r\n        if(!resizeRequested) {\r\n            resizeRequested = true;\r\n            setTimeout(() => {\r\n                resize();\r\n                resizeRequested = false;\r\n            }, 200);\r\n        }\r\n    });\r\n\r\n}\r\n"],"names":["siteSettings","reducedMotionPref","window","matchMedia","matches","viewport","vw","vh","setVw","val","setVh","mainNavigation","mobileActive","setMobileActive","mode","desktopActive","setDesktopActive","headerSearch","active","setActive","keyboardControl","accessibilityTimeout","toggleAccessibilityClass","clearTimeout","setTimeout","document","body","classList","toggle","addEventListener","e","key","$html","querySelector","isMobile","resizeRequested","menu","constructor","wrapper","toggleButton","ul","this","desktopSubmenuIndicator","navContent","mobileToggle","expanded","focusTimeout","hideTimeout","hideDelay","activeItemIndex","activeSubmenuItemIndex","items","querySelectorAll","forEach","i","x","length","menuItem","show","setAttribute","add","requestAnimationFrame","ontransitionend","transitionEnd","update","remove","hide","storeTriggerPositions","l","button","b","getBoundingClientRect","buttonX","Math","floor","left","right","style","setFocus","itemIndex","submenuItemIndex","submenu","mobileItems","focus","desktopItems","hasSubmenu","link","nextTabIndex","obj","level","index","li","sub","subMenu","closeBtn","inner","push","animate","maxHeight","offsetHeight","target","m","bodyClickTouch","t","inMenu","parentNode","o","itemsArray","xx","ll","oo","preventDefault","next","list","hasSearch","click","resize","prev","innerWidth","breakPoint","LG","s"],"sourceRoot":""}