@adobe/coral-spectrum
Version:
Coral Spectrum is a JavaScript library of Web Components following Spectrum design patterns.
252 lines (209 loc) • 7.17 kB
JavaScript
/**
* Copyright 2019 Adobe. All rights reserved.
* This file is licensed to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under
* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
* OF ANY KIND, either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
import {BaseComponent} from '../../../coral-base-component';
import {transform} from '../../../coral-utils';
import {Icon} from '../../../coral-component-icon';
import checkIcon from '../templates/checkIcon';
import {Decorator} from '../../../coral-decorator';
const CLASSNAME = '_coral-Menu-item';
const VALID_ARIA_SELECTED_ROLES = [
'columnheader',
'gridcell',
'option',
'row',
'rowheader',
'tab',
'treeitem'
];
const VALID_ARIA_SELECTED_ROLES_REGEXP = new RegExp(`^(${VALID_ARIA_SELECTED_ROLES.join('|')})$`);
/**
@class Coral.SelectList.Item
@classdesc A SelectList item component
@htmltag coral-selectlist-item
@extends {HTMLElement}
@extends {BaseComponent}
*/
const SelectListItem = Decorator(class extends BaseComponent(HTMLElement) {
/** @ignore */
constructor() {
super();
// Templates
this._elements = {
// Fetch or create the content zone element
content: this.querySelector('coral-selectlist-item-content') || document.createElement('coral-selectlist-item-content')
};
checkIcon.call(this._elements, {Icon});
}
/**
Value of the item. If not explicitly set, the value of <code>Node.textContent</code> is returned.
@type {String}
@default ""
@htmlattribute value
@htmlattributereflected
*/
get value() {
return typeof this._value === 'string' ? this._value : this.textContent.replace(/\s{2,}/g, ' ').trim();
}
set value(value) {
this._value = transform.string(value);
this._reflectAttribute('value', this._value);
}
/**
The content element for the item.
@type {SelectListItemContent}
@contentzone
*/
get content() {
return this._getContentZone(this._elements.content);
}
set content(value) {
this._setContentZone('content', value, {
handle: 'content',
tagName: 'coral-selectlist-item-content',
insert: function (content) {
content.classList.add(`${CLASSNAME}Label`);
// Remove content icon before processing content zone
const checkIcon = this._elements.checkIcon;
let contentIcon;
// @polyfill ie11
// IE11 throws syntax error because of the "not()" in the selector if the element is not in the DOM.
if (navigator.userAgent.indexOf('MSIE') !== -1 || navigator.appVersion.includes('Trident/')) {
const allContentIcons = Array.prototype.slice.call(content.querySelectorAll('coral-icon'));
const allContentMenuIcons = Array.prototype.slice.call(content.querySelectorAll('coral-icon._coral-Menu-item-icon'));
const contentIcons = allContentIcons.filter(icon => allContentMenuIcons.indexOf(icon) === -1);
contentIcon = contentIcons.length > 0 ? contentIcons[0] : undefined;
} else {
contentIcon = content.querySelector('coral-icon:not(._coral-Menu-item-icon)');
}
if (contentIcon && contentIcon.icon) {
contentIcon.remove();
this.icon = contentIcon.icon;
const iconElement = this._getIconElement();
if (contentIcon.alt || contentIcon.title) {
if (contentIcon.title) {
iconElement.title = contentIcon.title;
}
if (contentIcon.alt) {
iconElement.alt = contentIcon.alt;
}
} else {
iconElement.alt = '';
}
}
this.insertBefore(content, this.contains(checkIcon) ? checkIcon : null);
}
});
}
/**
The icon to display. See {@link Icon}.
@type {String}
@default ""
@htmlattribute icon
*/
get icon() {
const el = this._getIconElement();
return el.icon;
}
set icon(value) {
const el = this._getIconElement();
if (transform.string(value) === '') {
el.remove();
} else {
this.insertBefore(el, this.firstChild);
}
el.icon = value;
}
_getIconElement() {
if (!this._elements.icon) {
this._elements.icon = this.querySelector('._coral-Menu-item-icon') || new Icon();
this._elements.icon.size = Icon.size.SMALL;
this._elements.icon.classList.add('_coral-Menu-item-icon');
}
return this._elements.icon;
}
/**
Whether the item is selected.
@type {Boolean}
@default false
@htmlattribute selected
@htmlattributereflected
*/
get selected() {
return this._selected || false;
}
set selected(value) {
let _selected = transform.booleanAttr(value);
if(this._selected === _selected) {
return;
}
this._selected = _selected;
this._reflectAttribute('selected', this.disabled ? false : this._selected);
this.classList.toggle('is-selected', this._selected);
if (this.hasAttribute('role') &&
VALID_ARIA_SELECTED_ROLES_REGEXP.test(this.getAttribute('role'))) {
this.setAttribute('aria-selected', this._selected);
}
// Toggle check icon
this._elements.checkIcon.hidden = !this._selected;
this.trigger('coral-selectlist-item:_selectedchanged');
}
/**
Whether this item is disabled.
@type {Boolean}
@default false
@htmlattribute disabled
@htmlattributereflected
*/
get disabled() {
return this._disabled || false;
}
set disabled(value) {
this._disabled = transform.booleanAttr(value);
this._reflectAttribute('disabled', this._disabled);
this.classList.toggle('is-disabled', this._disabled);
this[this._disabled ? 'setAttribute' : 'removeAttribute']('aria-disabled', this._disabled);
this.selected = this.selected;
}
get _contentZones() {
return {'coral-selectlist-item-content': 'content'};
}
/** @ignore */
static get observedAttributes() {
return super.observedAttributes.concat(['selected', 'disabled', 'value']);
}
/** @ignore */
render() {
super.render();
this.classList.add(CLASSNAME);
if (!this.hasAttribute('role')) {
this.setAttribute('role', 'option');
}
// Support cloneNode
const template = this.querySelector('._coral-SelectList-icon');
if (template) {
template.remove();
}
// Fetch or create the content content zone element
const content = this._elements.content;
// Move any remaining elements into the content sub-component
if (!content.parentNode) {
while (this.firstChild) {
content.appendChild(this.firstChild);
}
}
// Add template
this.appendChild(this._elements.checkIcon);
// Assign the content zones, moving them into place in the process
this.content = content;
}
});
export default SelectListItem;