blob: 8e9a97fe207bae0316663ac845d2a48a0994e63c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/* global bp */
import './breakpoints';
export const canShowSubItems = () => bp.getBreakpointSize() === 'md' || bp.getBreakpointSize() === 'lg';
export const calculateTop = (boundingRect, outerHeight) => {
const windowHeight = window.innerHeight;
const bottomOverflow = windowHeight - (boundingRect.top + outerHeight);
return bottomOverflow < 0 ? (boundingRect.top - outerHeight) + boundingRect.height :
boundingRect.top;
};
export const showSubLevelItems = (el) => {
const subItems = el.querySelector('.sidebar-sub-level-items');
if (!subItems || !canShowSubItems()) return;
subItems.style.display = 'block';
el.classList.add('is-over');
const boundingRect = el.getBoundingClientRect();
const top = calculateTop(boundingRect, subItems.offsetHeight);
const isAbove = top < boundingRect.top;
subItems.style.transform = `translate3d(0, ${Math.floor(top)}px, 0)`;
if (isAbove) {
subItems.classList.add('is-above');
}
};
export const hideSubLevelItems = (el) => {
const subItems = el.querySelector('.sidebar-sub-level-items');
if (!subItems || !canShowSubItems()) return;
el.classList.remove('is-over');
subItems.style.display = 'none';
subItems.classList.remove('is-above');
};
export default () => {
const items = [...document.querySelectorAll('.sidebar-top-level-items > li:not(.active)')]
.filter(el => el.querySelector('.sidebar-sub-level-items'));
items.forEach((el) => {
el.addEventListener('mouseenter', e => showSubLevelItems(e.currentTarget));
el.addEventListener('mouseleave', e => hideSubLevelItems(e.currentTarget));
});
};
|