coral-spectrum/coral-component-shell/src/scripts/ShellHomeAnchor.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 '../../../coral-component-icon';
import homeAnchorIcon from '../templates/homeAnchorIcon';
const CLASSNAME = '_coral-Shell-homeAnchor';
/**
@class Coral.Shell.HomeAnchor
@classdesc A Shell Home Anchor component
@htmltag coral-shell-homeanchor
@htmlbasetag a
@extends {HTMLAnchorElement}
@extends {BaseComponent}
*/
class ShellHomeAnchor extends BaseComponent(HTMLAnchorElement) {
/** @ignore */
constructor() {
super();
// Prepare templates
this._elements = {
// Fetch or create the content zone elements
label: this.querySelector('coral-shell-homeanchor-label') || document.createElement('coral-shell-homeanchor-label')
};
// Create icon by default
homeAnchorIcon.call(this._elements);
}
/**
The label of the anchor.
@type {ShellHomeAnchorLabel}
@contentzone
*/
get label() {
return this._getContentZone(this._elements.label);
}
set label(value) {
this._setContentZone('label', value, {
handle: 'label',
tagName: 'coral-shell-homeanchor-label',
insert: function (content) {
this.appendChild(content);
}
});
}
/**
Specifies the icon name used in the anchor. See {@link Coral.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;
// removes the icon element from the DOM.
if (this.icon === '') {
this._elements.icon.remove();
}
// adds the icon back since it was blown away by textContent
else if (!this.contains(this._elements.icon)) {
this.insertBefore(this._elements.icon, this.firstChild);
}
}
get _contentZones() {
return {'coral-shell-homeanchor-label': 'label'};
}
/** @ignore */
static get observedAttributes() {
return super.observedAttributes.concat(['icon']);
}
/** @ignore */
render() {
super.render();
this.classList.add(CLASSNAME);
// Create doc fragment
const fragment = document.createDocumentFragment();
const label = this._elements.label;
// Remove it so we can process children
if (label.parentNode) {
this.removeChild(label);
}
// Move any remaining elements into the label
while (this.firstChild) {
const child = this.firstChild;
if (child.nodeType === Node.TEXT_NODE) {
// Move text elements to the label
label.appendChild(child);
} else if (child.nodeName === 'CORAL-ICON') {
if (!fragment.childNodes.length) {
// Conserve existing icon element to content
this._elements.icon = child;
fragment.appendChild(child);
} else {
// Remove cloned icon
this.removeChild(child);
}
} else {
// Remove anything else
this.removeChild(child);
}
}
// Add fragment back
this.appendChild(fragment);
// Insert icon and label insert
this.icon = this.icon;
this.label = label;
}
}
export default ShellHomeAnchor;