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document.addEventListener("DOMContentLoaded", function(){
console.log("HIGHLIGHTING")
var layout = document.getElementById('layout'),
menu = document.getElementById('menu'),
menuLink = document.getElementById('menuLink');
function toggleClass(element, className) {
var classes = element.className.split(/\s+/),
length = classes.length,
i = 0;
for(; i < length; i++) {
if (classes[i] === className) {
classes.splice(i, 1);
break;
}
}
// The className is not found
if (length === classes.length) {
classes.push(className);
}
element.className = classes.join(' ');
}
menuLink.onclick = function (e) {
var active = 'active';
e.preventDefault();
toggleClass(layout, active);
toggleClass(menu, active);
toggleClass(menuLink, active);
};
var snippets = document.getElementsByClassName("highlight-me");
for(var i = 0; i < snippets.length; i++){
console.log("highlighting", snippets[i])
hljs.highlightBlock(snippets[i])
}
// Cache selectors
var lastId = -1;
var main = document.getElementById("main");
scrollItems = document.getElementsByClassName("menu-item");
scrollHeaders = []
for(var i = 0; i < scrollItems.length; i++){
scrollHeaders.push(
document.getElementById(
scrollItems[i].getAttribute("href").substring(1)
)
)
}
function isElementInViewport (el) {
var rect = el.getBoundingClientRect();
return (
rect.top >= 0 &&
rect.left >= 0 &&
rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && /*or $(window).height() */
rect.right <= (window.innerWidth || document.documentElement.clientWidth) /*or $(window).width() */
);
}
main.addEventListener("scroll", function(){
// Get container scroll position
var fromTop = main.scrollTop;
// Get id of current scroll item
for(var i = scrollItems.length - 1; i >= 0; i--){
if (scrollHeaders[i].offsetTop < fromTop + 100 /*fudge factor*/){
if (lastId != i) {
if (lastId != -1) {
scrollItems[lastId].parentElement.className = scrollItems[lastId].parentElement.className.replace(
" pure-menu-selected",
""
);
}
scrollItems[i].parentElement.className = scrollItems[i].parentElement.className + " pure-menu-selected"
if (!isElementInViewport(scrollItems[i].parentElement)){
scrollItems[i].parentElement.scrollIntoView(lastId > i)
}
lastId = i
}
break;
}
}
});
});
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