mirror of
https://github.com/BookStackApp/BookStack.git
synced 2024-10-31 08:02:42 +01:00
48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
/**
|
|
* Dropdown
|
|
* Provides some simple logic to create simple dropdown menus.
|
|
*/
|
|
class DropDown {
|
|
|
|
constructor(elem) {
|
|
this.container = elem;
|
|
this.menu = elem.querySelector('ul, [dropdown-menu]');
|
|
this.toggle = elem.querySelector('[dropdown-toggle]');
|
|
this.setupListeners();
|
|
}
|
|
|
|
show() {
|
|
this.menu.style.display = 'block';
|
|
this.menu.classList.add('anim', 'menuIn');
|
|
this.container.addEventListener('mouseleave', this.hide.bind(this));
|
|
|
|
// Focus on first input if existing
|
|
let input = this.menu.querySelector('input');
|
|
if (input !== null) input.focus();
|
|
}
|
|
|
|
hide() {
|
|
this.menu.style.display = 'none';
|
|
this.menu.classList.remove('anim', 'menuIn');
|
|
}
|
|
|
|
setupListeners() {
|
|
// Hide menu on option click
|
|
this.container.addEventListener('click', event => {
|
|
let possibleChildren = Array.from(this.menu.querySelectorAll('a'));
|
|
if (possibleChildren.indexOf(event.target) !== -1) this.hide();
|
|
});
|
|
// Show dropdown on toggle click
|
|
this.toggle.addEventListener('click', this.show.bind(this));
|
|
// Hide menu on enter press
|
|
this.container.addEventListener('keypress', event => {
|
|
if (event.keyCode !== 13) return true;
|
|
event.preventDefault();
|
|
this.hide();
|
|
return false;
|
|
});
|
|
}
|
|
|
|
}
|
|
|
|
export default DropDown; |