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Code Issues Projects Releases Packages Wiki Activity Actions

Improved dropdown menu's handling

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This commit is contained in:
djmaze 2021-09-14 10:06:38 +02:00
parent 5839bcf62d
commit 2cb73643ca
8 changed files with 37 additions and 52 deletions
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34
vendors/bootstrap/js/bootstrap.native.js vendored
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@ -8,10 +8,10 @@
const setFocus = element => element.focus ? element.focus() : element.setActive();
this.BSN = {
Dropdown: function(element) {
Dropdown: function(toggleBtn) {
let menu, menuItems = [];
const self = this,
parent = element.parentNode,
parent = toggleBtn.parentNode,
preventEmptyAnchor = e => {
const t = e.target, href = t.href || (t.parentNode && t.parentNode.href);
(href && href.slice(-1) === '#') && e.preventDefault();
@ -19,30 +19,24 @@
open = bool => {
menu && menu.classList.toggle('show', bool);
parent.classList.toggle('show', bool);
element.setAttribute('aria-expanded', bool);
element.open = bool;
toggleBtn.setAttribute('aria-expanded', bool);
toggleBtn.open = bool;
if (bool) {
element.removeEventListener('click',clickHandler);
toggleBtn.removeEventListener('click',clickHandler);
} else {
setTimeout(() => element.addEventListener('click',clickHandler), 1);
setTimeout(() => toggleBtn.addEventListener('click',clickHandler), 1);
}
},
toggleEvents = () => {
let action = (element.open ? 'add' : 'remove') + 'EventListener';
let action = (toggleBtn.open ? 'add' : 'remove') + 'EventListener';
doc[action]('click',dismissHandler);
doc[action]('keydown',preventScroll);
doc[action]('keyup',keyHandler);
doc[action]('focus',dismissHandler);
},
dismissHandler = e => {
let eventTarget = e.target,
inside = menu.contains(eventTarget),
hasData = eventTarget && (
(eventTarget.getAttribute && eventTarget.getAttribute('data-toggle'))
|| (eventTarget.parentNode && eventTarget.parentNode.getAttribute('data-toggle')));
if (!(hasData && inside)
&& !(e.type === 'focus' && (inside || eventTarget === element))
) {
let eventTarget = e.target;
if ((!menu.contains(eventTarget) && !toggleBtn.contains(eventTarget)) || e.type !== 'focus') {
self.hide();
preventEmptyAnchor(e);
}
@ -57,7 +51,7 @@
self.toggle();
} else if (e.key === 'ArrowUp' || e.key === 'ArrowDown') {
let activeItem = doc.activeElement,
isMenuButton = activeItem === element,
isMenuButton = activeItem === toggleBtn,
idx = isMenuButton ? 0 : menuItems.indexOf(activeItem);
if (parent.contains(activeItem)) {
if (!isMenuButton) {
@ -76,18 +70,18 @@
!('tabindex' in menu) && menu.setAttribute('tabindex', '0');
open(true);
setTimeout(() => {
setFocus( menu.getElementsByTagName('INPUT')[0] || element );
setFocus( menu.getElementsByTagName('INPUT')[0] || toggleBtn );
toggleEvents();
},1);
};
self.hide = () => {
open(false);
toggleEvents();
setFocus(element);
setFocus(toggleBtn);
};
self.toggle = () => element.open ? self.hide() : self.show();
self.toggle = () => toggleBtn.open ? self.hide() : self.show();
open(false);
element.Dropdown = self;
toggleBtn.Dropdown = self;
}
};