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// global variables
const doc = document.documentElement;
const inline = ":inline";
// variables read from your hugo configuration
const parentURL = '{{ absURL "" }}';
let showImagePosition = "{{ .Site.Params.figurePositionShow }}";
const showImagePositionLabel = '{{ .Site.Params.figurePositionLabel }}';
function isObj(obj) {
return (obj && typeof obj === 'object' && obj !== null) ? true : false;
}
function createEl(element = 'div') {
return document.createElement(element);
}
function elem(selector, parent = document){
let elem = parent.querySelector(selector);
return elem != false ? elem : false;
}
function elems(selector, parent = document) {
let elems = parent.querySelectorAll(selector);
return elems.length ? elems : false;
}
function pushClass(el, targetClass) {
if (isObj(el) && targetClass) {
elClass = el.classList;
elClass.contains(targetClass) ? false : elClass.add(targetClass);
}
}
function hasClasses(el) {
if(isObj(el)) {
const classes = el.classList;
return classes.length
}
}
(function markInlineCodeTags(){
const codeBlocks = elems('code');
if(codeBlocks) {
codeBlocks.forEach(function(codeBlock){
hasClasses(codeBlock) ? false: pushClass(codeBlock, 'noClass');
});
}
})();
function deleteClass(el, targetClass) {
if (isObj(el) && targetClass) {
elClass = el.classList;
elClass.contains(targetClass) ? elClass.remove(targetClass) : false;
}
}
function modifyClass(el, targetClass) {
if (isObj(el) && targetClass) {
elClass = el.classList;
elClass.contains(targetClass) ? elClass.remove(targetClass) : elClass.add(targetClass);
}
}
function containsClass(el, targetClass) {
if (isObj(el) && targetClass && el !== document ) {
return el.classList.contains(targetClass) ? true : false;
}
}
function elemAttribute(elem, attr, value = null) {
if (value) {
elem.setAttribute(attr, value);
} else {
value = elem.getAttribute(attr);
return value ? value : false;
}
}
function wrapEl(el, wrapper) {
el.parentNode.insertBefore(wrapper, el);
wrapper.appendChild(el);
}
function deleteChars(str, subs) {
let newStr = str;
if (Array.isArray(subs)) {
for (let i = 0; i < subs.length; i++) {
newStr = newStr.replace(subs[i], '');
}
} else {
newStr = newStr.replace(subs, '');
}
return newStr;
}
function isBlank(str) {
return (!str || str.trim().length === 0);
}
function isMatch(element, selectors) {
if(isObj(element)) {
if(selectors.isArray) {
let matching = selectors.map(function(selector){
return element.matches(selector)
})
return matching.includes(true);
}
return element.matches(selectors)
}
}
function copyToClipboard(str) {
let copy, selection, selected;
copy = createEl('textarea');
copy.value = str;
copy.setAttribute('readonly', '');
copy.style.position = 'absolute';
copy.style.left = '-9999px';
selection = document.getSelection();
doc.appendChild(copy);
// check if there is any selected content
selected = selection.rangeCount > 0 ? selection.getRangeAt(0) : false;
copy.select();
document.execCommand('copy');
doc.removeChild(copy);
if (selected) { // if a selection existed before copying
selection.removeAllRanges(); // unselect existing selection
selection.addRange(selected); // restore the original selection
}
}
function loadSvg(file, parent, path = 'icons/') {
const link = `${parentURL}${path}${file}.svg`;
fetch(link)
.then((response) => {
return response.text();
})
.then((data) => {
parent.innerHTML = data;
});
}
function getMobileOperatingSystem() {
let userAgent = navigator.userAgent || navigator.vendor || window.opera;
if (/android/i.test(userAgent)) {
return "Android";
}
if (/iPad|iPhone|iPod/.test(userAgent) && !window.MSStream) {
return "iOS";
}
return "unknown";
}
function horizontalSwipe(element, func, direction) {
// call func if result of swipeDirection() 👇🏻 is equal to direction
let touchstartX = 0;
let touchendX = 0;
let swipeDirection = null;
function handleGesure() {
return (touchendX + 50 < touchstartX) ? 'left' : (touchendX < touchstartX + 50) ? 'right' : false;
}
element.addEventListener('touchstart', e => {
touchstartX = e.changedTouches[0].screenX
});
element.addEventListener('touchend', e => {
touchendX = e.changedTouches[0].screenX
swipeDirection = handleGesure()
swipeDirection === direction ? func() : false;
});
}
function parseBoolean(string) {
let bool;
string = string.trim().toLowerCase();
switch (string) {
case 'true':
return true;
case 'false':
return false;
default:
return undefined;
}
};
(function() {
const bodyElement = elem('body');
const platform = navigator.platform.toLowerCase();
if(platform.includes("win")) {
pushClass(bodyElement, 'windows');
}
})();
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