mirror of
https://github.com/Choices-js/Choices.git
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ab22347d7b
* Add placeholder options to demo page * Use constant types in components * Refactor adding predefined groups/items/choices * Add 'highlighted' flag to Item type * Fix dispatch param type * Build * Add jsdoc comments to utils * Remove unused file * Add default values to js doc comments * Use Redux Action type * Housekeeping * Increase utils coverage * Apply suggestions from code review * Add _getTemplate unit tests
172 lines
4.3 KiB
JavaScript
172 lines
4.3 KiB
JavaScript
import { wrap } from '../lib/utils';
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import { SELECT_ONE_TYPE } from '../constants';
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/**
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* @typedef {import('../../../types/index').Choices.passedElement} passedElement
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* @typedef {import('../../../types/index').Choices.ClassNames} ClassNames
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*/
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export default class Container {
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/**
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* @param {{
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* element: HTMLElement,
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* type: passedElement['type'],
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* classNames: ClassNames,
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* position
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* }} args
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*/
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constructor({ element, type, classNames, position }) {
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this.element = element;
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this.classNames = classNames;
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this.type = type;
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this.position = position;
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this.isOpen = false;
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this.isFlipped = false;
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this.isFocussed = false;
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this.isDisabled = false;
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this.isLoading = false;
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this._onFocus = this._onFocus.bind(this);
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this._onBlur = this._onBlur.bind(this);
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}
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addEventListeners() {
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this.element.addEventListener('focus', this._onFocus);
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this.element.addEventListener('blur', this._onBlur);
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}
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removeEventListeners() {
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this.element.removeEventListener('focus', this._onFocus);
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this.element.removeEventListener('blur', this._onBlur);
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}
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/**
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* Determine whether container should be flipped based on passed
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* dropdown position
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* @param {number} dropdownPos
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* @returns {boolean}
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*/
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shouldFlip(dropdownPos) {
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if (typeof dropdownPos !== 'number') {
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return false;
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}
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// If flip is enabled and the dropdown bottom position is
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// greater than the window height flip the dropdown.
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let shouldFlip = false;
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if (this.position === 'auto') {
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shouldFlip = !window.matchMedia(`(min-height: ${dropdownPos + 1}px)`)
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.matches;
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} else if (this.position === 'top') {
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shouldFlip = true;
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}
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return shouldFlip;
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}
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/**
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* @param {string} activeDescendantID
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*/
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setActiveDescendant(activeDescendantID) {
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this.element.setAttribute('aria-activedescendant', activeDescendantID);
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}
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removeActiveDescendant() {
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this.element.removeAttribute('aria-activedescendant');
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}
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/**
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* @param {number} dropdownPos
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*/
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open(dropdownPos) {
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this.element.classList.add(this.classNames.openState);
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this.element.setAttribute('aria-expanded', 'true');
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this.isOpen = true;
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if (this.shouldFlip(dropdownPos)) {
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this.element.classList.add(this.classNames.flippedState);
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this.isFlipped = true;
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}
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}
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close() {
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this.element.classList.remove(this.classNames.openState);
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this.element.setAttribute('aria-expanded', 'false');
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this.removeActiveDescendant();
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this.isOpen = false;
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// A dropdown flips if it does not have space within the page
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if (this.isFlipped) {
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this.element.classList.remove(this.classNames.flippedState);
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this.isFlipped = false;
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}
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}
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focus() {
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if (!this.isFocussed) {
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this.element.focus();
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}
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}
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addFocusState() {
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this.element.classList.add(this.classNames.focusState);
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}
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removeFocusState() {
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this.element.classList.remove(this.classNames.focusState);
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}
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enable() {
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this.element.classList.remove(this.classNames.disabledState);
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this.element.removeAttribute('aria-disabled');
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if (this.type === SELECT_ONE_TYPE) {
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this.element.setAttribute('tabindex', '0');
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}
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this.isDisabled = false;
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}
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disable() {
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this.element.classList.add(this.classNames.disabledState);
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this.element.setAttribute('aria-disabled', 'true');
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if (this.type === SELECT_ONE_TYPE) {
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this.element.setAttribute('tabindex', '-1');
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}
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this.isDisabled = true;
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}
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/**
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* @param {HTMLElement} element
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*/
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wrap(element) {
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wrap(element, this.element);
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}
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/**
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* @param {Element} element
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*/
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unwrap(element) {
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// Move passed element outside this element
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this.element.parentNode.insertBefore(element, this.element);
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// Remove this element
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this.element.parentNode.removeChild(this.element);
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}
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addLoadingState() {
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this.element.classList.add(this.classNames.loadingState);
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this.element.setAttribute('aria-busy', 'true');
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this.isLoading = true;
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}
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removeLoadingState() {
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this.element.classList.remove(this.classNames.loadingState);
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this.element.removeAttribute('aria-busy');
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this.isLoading = false;
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}
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_onFocus() {
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this.isFocussed = true;
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}
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_onBlur() {
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this.isFocussed = false;
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}
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}
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