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example_files/libs/quarto-contrib/carpentries-menu-0.0.1/menu.js

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+var sidebarVisible = true;
+var codeExpanded = false;
+var windowSize = 0;
+var is_overview = false;
+
+$( document ).ready(function() {
+
+    windowSize = window.innerWidth;
+    // When the page loads check if we have an overview page and we are not in
+    // mobile mode.
+    is_overview = $(".overview-sidebar").length > 0 && windowSize >= 768;
+    if (is_overview) {
+        // console.log("init overview");
+        setSidebarVisible(false);
+    }
+    // load the boolean from sessionStorage
+    sidebarVisible = sidebarIsVisible();
+    // only show the sidebar if we have determined that it is visible
+    if (! sidebarVisible ) {
+        if (window.innerWidth > 1200) {
+            hideSidebarDesktop();
+        }
+    }
+    //change collapse icons depending on context
+    if (window.innerWidth > 1024) {
+        if ( sidebarVisible ) {
+            $(".collapse-toggle").html("Collapse " + feather.icons['chevron-left'].toSvg());
+        } else {
+            $(".collapse-toggle").html("Episodes " + feather.icons['chevron-right'].toSvg());
+        }
+    } else {
+        $(".collapse-toggle").html(feather.icons['x'].toSvg());
+    }
+    //show mobile sidebar
+    $(".navbar-toggler").click(function(){
+        showSidebarMobile();
+    });
+
+    //showing and hiding sidebar
+    $(".collapse-toggle").click(function(){
+        if (window.innerWidth > 1200) {
+            if (! sidebarIsVisible() ) {
+                showSidebarDesktop();
+            } else {
+                hideSidebarDesktop();
+            }
+        } else {
+            hideSidebarMobile();
+        }
+    });
+
+    //attempt to smoothly handle resizing windows
+    $(window).on('resize', function(){
+        //nav is shown by default on desktop only
+        if (window.innerWidth > 1200) {
+            //reset css to desktop only if it's visible
+            if ( sidebarIsVisible() ) {
+                showSidebarDesktop();
+            } else {
+                hideSidebarDesktop();
+            }
+
+            if (windowSize > 1200 && ! sidebarIsVisible()) {
+                hideSidebarDesktop();
+            }
+        }
+        checkForExtraPadding();
+
+        windowSize = window.innerWidth;
+
+        if (window.innerWidth < 768) {
+            var $toTop = $('#to-top');
+            $toTop.hide();
+        }
+    });
+
+    //show scroll to top button after scrolling 500px, with 100ms "debounce"
+    $(document).scroll(function() {
+        var scrollTimer = window.scrollTimer || null;
+        if (scrollTimer) {
+            clearTimeout(scrollTimer);
+        }
+        window.scrollTimer = window.setTimeout(
+            function() {
+                var $this     = $(this);
+                var y         = $this.scrollTop();
+                var $toTop    = $('#to-top');
+                var isVisible = $toTop.is(':visible');
+                if (y > 500) {
+                    if (window.innerWidth > 768 && ! isVisible) {
+                        $toTop.fadeIn();
+                    }
+                } else if (isVisible) {
+                    $toTop.fadeOut();
+                }
+            },
+            100
+        );
+    });
+
+    //hide the mobile menu if a chapter section link is clicked
+    $('.section-link').click(function(){
+        if (window.innerWidth < 1200) {
+            hideSidebarMobile();
+        }
+    });
+
+    //expand all code button
+    $("#expand-code").click(function(){
+        if (codeExpanded == true) {
+            $(".solution-button").not(".collapsed").click();
+            $(".spoiler-button").not(".collapsed").click();
+            codeExpanded = false;
+            $("#expand-code").html("Expand All Solutions " + feather.icons['plus'].toSvg());
+        } else {
+            $(".solution-button.collapsed").click();
+            $(".spoiler-button.collapsed").click();
+            codeExpanded = true;
+            $("#expand-code").html("Collapse All Solutions " + feather.icons['minus'].toSvg());
+        }
+    });
+});
+
+// determine if the user has the sidebar showing
+function sidebarIsVisible() {
+    if (storageAvailable('sessionStorage')) {
+        if (sessionStorage.getItem('sidebarVisible') === null) {
+            sessionStorage.setItem('sidebarVisible', sidebarVisible);
+        }
+        return sessionStorage.getItem('sidebarVisible') == 'true';
+    } else {
+        return sidebarVisible
+    }
+}
+
+
+function setSidebarVisible(value) {
+    if (storageAvailable('sessionStorage')) {
+        sessionStorage.setItem('sidebarVisible', value);
+    } else {
+        sidebarVisible = value;
+    }
+    return null
+}
+
+// check if we have local storage
+function storageAvailable(type) {
+    var storage;
+    try {
+        storage = window[type];
+        var x = '__storage_test__';
+        storage.setItem(x, x);
+        storage.removeItem(x);
+        return true;
+    }
+    catch(e) {
+        return e instanceof DOMException && (
+            // everything except Firefox
+            e.code === 22 ||
+            // Firefox
+            e.code === 1014 ||
+            // test name field too, because code might not be present
+            // everything except Firefox
+            e.name === 'QuotaExceededError' ||
+            // Firefox
+            e.name === 'NS_ERROR_DOM_QUOTA_REACHED') &&
+            // acknowledge QuotaExceededError only if there's something already stored
+            (storage && storage.length !== 0);
+    }
+}
+
+
+//needed to avoid the collapsed navbar overlapping main content
+function checkForExtraPadding(){
+    if (window.innerWidth > 1200 && window.innerWidth < 1352)
+    {
+        if (! sidebarIsVisible()) {
+            $('.primary-content').css({
+                'padding-left': '90px'
+            });
+        }
+    } else {
+        $('.primary-content').css({
+            'padding-left': ''});
+    }
+}
+
+function showSidebarMobile(){
+    // console.log("showSidebarMobile()");
+    var $sidebar        = $('#sidebar');
+    var $sidebarCol     = $('#sidebar-col');
+    var $primaryContent = $('.primary-content');
+    var $sidebarInner   = $('.sidebar-inner');
+    var $collapseToggle = $('.collapse-toggle');
+    $collapseToggle.css({display: ''});
+    $collapseToggle.html(feather.icons['x'].toSvg());
+    setSidebarVisible(true);
+    if (window.innerWidth < 768) {
+        $sidebar.css({
+            display: '',
+            position: 'absolute',
+            top: '150px',
+            left: '0px',
+            right: '0px'
+        });
+    } else {
+        $sidebar.css({
+            display: '',
+            position: 'absolute',
+            top: '200px',
+            left: '0px',
+            right: '0px'
+        });
+    }
+    $sidebarCol.css({position: '', display: ''});
+    $sidebarInner.css('visibility', 'visible');
+    $sidebar.show();
+    $sidebar.attr('aria-hidden', 'false');
+}
+
+function hideSidebarMobile(){
+    // console.log('hideSidebarMobile()');
+    setSidebarVisible(false);
+    var $sidebar = $('#sidebar');
+    $sidebar.hide();
+    $sidebar.attr('tabindex', '-1'); // remove from tab order
+    $sidebar.attr('aria-hidden', 'true'); // ensure not read by screen readers
+}
+
+function showSidebarDesktop(){
+    // console.log("showSidebarDesktop()");
+    setSidebarVisible(true);
+    if ($('.overview-sidebar').length > 0) {
+        hideSidebarOverview();
+        return(true)
+    }
+    var $sidebar        = $('#sidebar');
+    var $sidebarCol     = $('#sidebar-col');
+    var $primaryContent = $('.primary-content');
+    var $sidebarInner   = $('.sidebar-inner');
+    var $collapseToggle = $('.collapse-toggle');
+    $sidebar.css({
+        position: 'relative',
+        top: '0px'
+    });
+    $sidebarCol.attr('class', 'col-lg-4');
+    $sidebarCol.css({
+        position: 'relative',
+        width:'',
+        top: '',
+        height: ''
+    });
+    $primaryContent.attr('class', "col-xl-8 primary-content");
+    $sidebarInner.css('visibility', 'visible');
+    $collapseToggle.html("Collapse " + feather.icons['chevron-left'].toSvg());
+    $sidebar.attr('aria-hidden', 'false');
+    $collapseToggle.attr('aria-expanded', 'true');
+    $sidebar.show();
+    checkForExtraPadding();
+}
+
+function hideSidebarDesktop(){
+    // console.log("hideSidebarDesktop()");
+    setSidebarVisible(false);
+    var is_overview     = $('.overview-sidebar').length > 0;
+    if (is_overview) {
+        hideSidebarOverview();
+        return(true)
+    }
+    var $sidebar        = $('#sidebar');
+    var $sidebarCol     = $('#sidebar-col');
+    var $primaryContent = $('.primary-content');
+    var $sidebarInner   = $('.sidebar-inner');
+    var $collapseToggle = $('.collapse-toggle');
+    $sidebarInner.css('visibility', 'hidden');
+    $collapseToggle.html("Episodes " + feather.icons['chevron-right'].toSvg());
+    // resize primary content before sidebar col
+    // when the primary content adjusts its size, the vertical content shrinks
+    // and we need to account fo that.
+    $primaryContent.attr('class', "col-lg-12 primary-content");
+    // Here, we squish the sidebar to the left and readjust its height to be
+    // equal to the primary content
+    $sidebarCol.css({
+        position: 'absolute',
+        left: '-10px',
+        width:'115px',
+        height: ($primaryContent.height())
+    });
+    $sidebar.attr('tabindex', '-1');
+    $sidebar.attr('aria-hidden', 'true');
+    $collapseToggle.attr('aria-expanded', 'false');
+    checkForExtraPadding();
+}
+
+function hideSidebarOverview(){
+    // console.log("hideSidebarOverview()");
+    setSidebarVisible(false);
+    var is_overview     = $('.overview-sidebar').length > 0;
+    var $sidebar        = $('#sidebar');
+    var $sidebarCol     = $('#sidebar-col');
+    var $primaryContent = $('.primary-content');
+    var $sidebarInner   = $('.sidebar-inner');
+    var $collapseToggle = $('.collapse-toggle');
+    $primaryContent.attr('class', "col-lg-12 primary-content");
+    $sidebarInner.css('visibility', 'hidden');
+    $collapseToggle.css({display: 'none'})
+    // resize primary content before sidebar col
+    // when the primary content adjusts its size, the vertical content shrinks
+    // and we need to account fo that.
+    // Here, we squish the sidebar to the left and readjust its height to be
+    // equal to the primary content
+    $sidebar.css({display: 'none'});
+    $sidebarCol.css({
+        display: 'none'
+    });
+    $sidebarCol.attr('class', 'col-lg-1');
+    $sidebarCol.attr('tabindex', '-1');
+    $sidebarCol.attr('aria-hidden', 'true');
+    $sidebar.attr('tabindex', '-1');
+    $sidebar.attr('aria-hidden', 'true');
+    $collapseToggle.attr('aria-expanded', 'false');
+    checkForExtraPadding();
+}