BookStack/resources/assets/js/components/expand-toggle.js
2017-08-06 21:08:03 +01:00

65 lines
2.2 KiB
JavaScript

class ExpandToggle {
constructor(elem) {
this.elem = elem;
this.isOpen = false;
this.selector = elem.getAttribute('expand-toggle');
elem.addEventListener('click', this.click.bind(this));
}
open(elemToToggle) {
elemToToggle.style.display = 'block';
elemToToggle.style.height = '';
let height = elemToToggle.getBoundingClientRect().height;
elemToToggle.style.height = '0px';
elemToToggle.style.overflow = 'hidden';
elemToToggle.style.transition = 'height ease-in-out 240ms';
let transitionEndBound = onTransitionEnd.bind(this);
function onTransitionEnd() {
elemToToggle.style.overflow = '';
elemToToggle.style.height = '';
elemToToggle.style.transition = '';
elemToToggle.removeEventListener('transitionend', transitionEndBound);
}
setTimeout(() => {
elemToToggle.style.height = `${height}px`;
elemToToggle.addEventListener('transitionend', transitionEndBound)
}, 1);
}
close(elemToToggle) {
elemToToggle.style.display = 'block';
elemToToggle.style.height = elemToToggle.getBoundingClientRect().height + 'px';
elemToToggle.style.overflow = 'hidden';
elemToToggle.style.transition = 'all ease-in-out 240ms';
let transitionEndBound = onTransitionEnd.bind(this);
function onTransitionEnd() {
elemToToggle.style.overflow = '';
elemToToggle.style.height = '';
elemToToggle.style.transition = '';
elemToToggle.style.display = 'none';
elemToToggle.removeEventListener('transitionend', transitionEndBound);
}
setTimeout(() => {
elemToToggle.style.height = `0px`;
elemToToggle.addEventListener('transitionend', transitionEndBound)
}, 1);
}
click(event) {
event.preventDefault();
let matchingElems = document.querySelectorAll(this.selector);
for (let i = 0, len = matchingElems.length; i < len; i++) {
this.isOpen ? this.close(matchingElems[i]) : this.open(matchingElems[i]);
}
this.isOpen = !this.isOpen;
}
}
module.exports = ExpandToggle;