BookStack/resources/assets/js/services/util.js
2019-06-08 00:02:51 +01:00

48 lines
1.5 KiB
JavaScript

/**
* Returns a function, that, as long as it continues to be invoked, will not
* be triggered. The function will be called after it stops being called for
* N milliseconds. If `immediate` is passed, trigger the function on the
* leading edge, instead of the trailing.
* @attribution https://davidwalsh.name/javascript-debounce-function
* @param func
* @param wait
* @param immediate
* @returns {Function}
*/
export function debounce(func, wait, immediate) {
let timeout;
return function() {
const context = this, args = arguments;
const later = function() {
timeout = null;
if (!immediate) func.apply(context, args);
};
const callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};
/**
* Scroll and highlight an element.
* @param {HTMLElement} element
*/
export function scrollAndHighlightElement(element) {
if (!element) return;
element.scrollIntoView({behavior: 'smooth'});
const color = document.getElementById('custom-styles').getAttribute('data-color-light');
const initColor = window.getComputedStyle(element).getPropertyValue('background-color');
element.style.backgroundColor = color;
setTimeout(() => {
element.classList.add('selectFade');
element.style.backgroundColor = initColor;
}, 10);
setTimeout(() => {
element.classList.remove('selectFade');
element.style.backgroundColor = '';
}, 3000);
}