coral-spectrum/coral-component-list/src/scripts/SelectListGroup.js
/**
* 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 {SelectableCollection} from '../../../coral-collection';
import {transform} from '../../../coral-utils';
import {Decorator} from '../../../coral-decorator';
const CLASSNAME = '_coral-SelectList-group';
/**
@class Coral.SelectList.Group
@classdesc A SelectList group component
@htmltag coral-selectlist-group
@extends {HTMLElement}
@extends {BaseComponent}
*/
const SelectListGroup = Decorator(class extends BaseComponent(HTMLElement) {
/**
The label of the group. It reflects the <code>label</code> attribute to the DOM.
@type {String}
@default ""
@htmlattribute label
@htmlattributereflected
*/
get label() {
return this._label || '';
}
set label(value) {
this._label = transform.string(value);
this._reflectAttribute('label', this._label);
this.setAttribute('aria-label', this._label);
}
/**
The Collection Interface that allows interacting with the items that the component contains.
@type {SelectableCollection}
@readonly
*/
get items() {
// just init on demand
if (!this._items) {
this._items = new SelectableCollection({
host: this,
itemTagName: 'coral-selectlist-item'
});
}
return this._items;
}
/** @ignore */
static get observedAttributes() {
return super.observedAttributes.concat(['label']);
}
/** @ignore */
render() {
super.render();
this.classList.add(CLASSNAME);
this.setAttribute('role', 'group');
}
});
export default SelectListGroup;