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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 {Decorator} from '../../../coral-decorator';
const CLASSNAME = '_coral-Table-headerCell';
/**
@class Coral.Table.HeaderCell
@classdesc A Table header cell component
@htmltag coral-table-headercell
@htmlbasetag th
@extends {HTMLTableCellElement}
@extends {BaseComponent}
*/
const TableHeaderCell = Decorator(class extends BaseComponent(HTMLTableCellElement) {
/** @ignore */
constructor() {
super();
// Templates
this._elements = {
content: this.querySelector('coral-table-headercell-content') || document.createElement('coral-table-headercell-content')
};
// Watch for content changes in sticky header cell
this._stickyCellObserver = new MutationObserver(this._handleMutations.bind(this));
this._stickyCellObserver.observe(this._elements.content, {
childList: true,
subtree: true
});
}
/**
The header cell's content.
@type {TableHeaderCellContent}
@contentzone
*/
get content() {
return this._getContentZone(this._elements.content);
}
set content(value) {
this._setContentZone('content', value, {
handle: 'content',
tagName: 'coral-table-headercell-content',
insert: function (content) {
this.appendChild(content);
}
});
}
/** @private */
_handleMutations() {
this.trigger('coral-table-headercell:_contentchanged');
}
get _contentZones() {
return {'coral-table-headercell-content': 'content'};
}
/** @ignore */
render() {
super.render();
this.classList.add(CLASSNAME);
// Fetch or create the content zone element
const content = this._elements.content;
if (!content.parentNode) {
// Move component children into the content
while (this.firstChild) {
content.appendChild(this.firstChild);
}
}
// Assign the content zone so the insert function will be called
this.content = content;
}
/**
Triggered when the {@link TableHeaderCell} content changed.
@typedef {CustomEvent} coral-table-headercell:_contentchanged
@private
*/
});
export default TableHeaderCell;
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