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* 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, validate} from '../../../coral-utils';
import {Decorator} from '../../../coral-decorator';
const CLASSNAME = '_coral-Banner';
/**
Enumeration for {@link Banner} variants.
@typedef {Object} BannerVariantEnum
@property {String} ERROR
A banner to indicate that an error has occurred.
@property {String} WARNING
A banner to warn the user of something important.
@property {String} INFO
A banner to inform the user of non-critical information.
*/
const variant = {
ERROR: 'error',
WARNING: 'warning',
INFO: 'info'
};
// An array of all possible variant classnames
const ALL_VARIANT_CLASSES = [];
for (const variantValue in variant) {
ALL_VARIANT_CLASSES.push(`${CLASSNAME}--${variant[variantValue]}`);
}
/**
@class Coral.Banner
@classdesc A Banner component
@htmltag coral-banner
@extends {HTMLElement}
@extends {BaseComponent}
*/
const Banner = Decorator(class extends BaseComponent(HTMLElement) {
/** @ignore */
constructor() {
super();
// Fetch content zones
this._elements = {
header: this.querySelector('coral-banner-header') || document.createElement('coral-banner-header'),
content: this.querySelector('coral-banner-content') || document.createElement('coral-banner-content')
};
}
/**
The banner variant style to use. See {@link BannerVariantEnum}.
@type {String}
@default BannerVariantEnum.INFO
@htmlattribute variant
@htmlattributereflected
*/
get variant() {
return this._variant || variant.INFO;
}
set variant(value) {
value = transform.string(value).toLowerCase();
this._variant = validate.enumeration(variant)(value) && value || variant.INFO;
this._reflectAttribute('variant', this._variant);
// Remove all variant classes
this.classList.remove(...ALL_VARIANT_CLASSES);
// Set new variant class
this.classList.add(`${CLASSNAME}--${this._variant}`);
}
/**
The banner's header.
@type {BannerHeader}
@contentzone
*/
get header() {
return this._getContentZone(this._elements.header);
}
set header(value) {
this._setContentZone('header', value, {
handle: 'header',
tagName: 'coral-banner-header',
insert: function (header) {
header.classList.add(`${CLASSNAME}-header`);
this.insertBefore(header, this.firstChild);
}
});I
}
/**
The banner's content.
@type {BannerContent}
@contentzone
*/
get content() {
return this._getContentZone(this._elements.content);
}
set content(value) {
this._setContentZone('content', value, {
handle: 'content',
tagName: 'coral-banner-content',
insert: function (content) {
content.classList.add(`${CLASSNAME}-content`);
this.appendChild(content);
}
});
}
get _contentZones() {
return {
'coral-banner-header': 'header',
'coral-banner-content': 'content'
};
}
/**
Returns {@link Banner} variants.
@return {BannerVariantEnum}
*/
static get variant() {
return variant;
}
/** @ignore */
static get observedAttributes() {
return ['variant'];
}
/** @ignore */
render() {
super.render();
this.classList.add(CLASSNAME);
// Default reflected attributes
if (!this._variant) {
this.variant = variant.INFO;
}
const header = this._elements.header;
const content = this._elements.content;
// When the content zone was not created, we need to make sure that everything is added inside it as a content.
if (!content.parentNode) {
while (this.firstChild) {
const child = this.firstChild;
// Don't move header into content
if (child === header) {
child.remove();
} else {
content.appendChild(this.firstChild);
}
}
}
// Assign content zones
this.header = this._elements.header;
this.content = this._elements.content;
}
});
export default Banner;
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