mirror of
https://github.com/Choices-js/Choices.git
synced 2024-06-14 19:55:13 +02:00
50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
export default class Dropdown {
|
|
constructor(instance, element, classNames) {
|
|
this.instance = instance;
|
|
this.element = element;
|
|
this.classNames = classNames;
|
|
this.dimensions = this.element.getBoundingClientRect();
|
|
this.position = Math.ceil(this.dimensions.top + window.scrollY + this.element.offsetHeight);
|
|
this.isActive = false;
|
|
}
|
|
|
|
/**
|
|
* Determine whether to hide or show dropdown based on its current state
|
|
* @return {Object} Class instance
|
|
* @public
|
|
*/
|
|
toggle() {
|
|
if (this.isActive) {
|
|
this.hide();
|
|
} else {
|
|
this.show();
|
|
}
|
|
|
|
return this.instance;
|
|
}
|
|
|
|
/**
|
|
* Show dropdown to user by adding active state class
|
|
* @return {Object} Class instance
|
|
* @public
|
|
*/
|
|
show() {
|
|
this.element.classList.add(this.classNames.activeState);
|
|
this.element.setAttribute('aria-expanded', 'true');
|
|
this.isActive = true;
|
|
return this.instance;
|
|
}
|
|
|
|
/**
|
|
* Hide dropdown from user
|
|
* @return {Object} Class instance
|
|
* @public
|
|
*/
|
|
hide() {
|
|
this.element.classList.remove(this.classNames.activeState);
|
|
this.element.setAttribute('aria-expanded', 'false');
|
|
this.isActive = false;
|
|
return this.instance;
|
|
}
|
|
}
|