coral-spectrum/coral-component-sidenav/src/scripts/SideNavItem.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.
*/
const CLASSNAME = '_coral-SideNav-item';
import {BaseComponent} from '../../../coral-base-component';
import {BaseLabellable} from '../../../coral-base-labellable';
import {transform} from '../../../coral-utils';
import item from '../templates/item';
import '../../../coral-component-icon';
import {Decorator} from '../../../coral-decorator';
/**
@class Coral.SideNav.Item
@classdesc A SideNav Item component.
@htmltag coral-sidenav-item
@extends {HTMLAnchorElement}
@extends {BaseComponent}
*/
const SideNavItem = Decorator(class extends BaseLabellable(BaseComponent(HTMLAnchorElement)) {
/** @ignore */
constructor() {
super();
// Prepare templates
this._elements = {
content: this.querySelector('coral-sidenav-item-content') || document.createElement('coral-sidenav-item-content')
};
item.call(this._elements);
super._observeLabel();
}
/**
The content of the sidenav item.
@type {SideNavItemContent}
@contentzone
*/
get content() {
return this._getContentZone(this._elements.content);
}
set content(value) {
this._setContentZone('content', value, {
handle: 'content',
tagName: 'coral-sidenav-item-content',
insert: function (content) {
this._elements.container.appendChild(content);
}
});
}
/**
Specifies the icon name used inside the item. See {@link Icon} for valid icon names.
@type {String}
@default ""
@htmlattribute icon
*/
get icon() {
return this._elements.icon.icon;
}
set icon(value) {
this._elements.icon.icon = value;
this._elements.icon.hidden = this._elements.icon.icon === '';
super._toggleIconAriaHidden();
}
/**
Whether the item is selected.
@type {Boolean}
@default false
@htmlattribute selected
@htmlattributereflected
*/
get selected() {
return this._selected || false;
}
set selected(value) {
this._selected = transform.booleanAttr(value);
this._reflectAttribute('selected', this._selected);
this.classList.toggle('is-selected', this._selected);
this.trigger('coral-sidenav-item:_selectedchanged');
}
get _contentZones() {
return {'coral-sidenav-item-label': 'content'};
}
/** @ignore */
static get observedAttributes() {
return super.observedAttributes.concat(['selected', 'icon']);
}
/** @ignore */
render() {
super.render();
this.classList.add(CLASSNAME);
// Create a fragment
const fragment = document.createDocumentFragment();
// Render the main template
fragment.appendChild(this._elements.container);
const content = this._elements.content;
// Remove it so we can process children
if (content.parentNode) {
content.parentNode.removeChild(content);
}
// Process remaining elements as necessary
while (this.firstChild) {
const child = this.firstChild;
if (child.nodeType === Node.TEXT_NODE ||
child.nodeType === Node.ELEMENT_NODE && child.getAttribute('handle') !== 'container') {
// Add non-template elements to the content
content.appendChild(child);
} else {
// Remove anything else
this.removeChild(child);
}
}
// Add the frag to the component
this.appendChild(fragment);
// Assign the content zones, moving them into place in the process
this.content = content;
}
});
export default SideNavItem;