import HTMLElement from '../html-element/HTMLElement.js';
import * as PropertySymbol from '../../PropertySymbol.js';
import EventPhaseEnum from '../../event/EventPhaseEnum.js';
import MouseEvent from '../../event/events/MouseEvent.js';
/**
* HTML Label Element.
*
* Reference:
* https://developer.mozilla.org/en-US/docs/Web/API/HTMLLabelElement.
*/
export default class HTMLLabelElement extends HTMLElement {
/**
* Returns a string containing the ID of the labeled control. This reflects the "for" attribute.
*
* @returns ID of the labeled control.
*/
get htmlFor() {
const htmlFor = this.getAttribute('for');
if (htmlFor !== null) {
return htmlFor;
}
return htmlFor !== null ? htmlFor : '';
}
/**
* Sets a string containing the ID of the labeled control. This reflects the "for" attribute.
*
* @param htmlFor ID of the labeled control.
*/
set htmlFor(htmlFor) {
this.setAttribute('for', htmlFor);
}
/**
* Returns an HTML element representing the control with which the label is associated.
*
* @returns Control element.
*/
get control() {
const htmlFor = this.getAttribute('for');
if (htmlFor !== null) {
if (!htmlFor || !this[PropertySymbol.isConnected]) {
return null;
}
const control = (this[PropertySymbol.rootNode].getElementById(htmlFor));
if (control) {
switch (control[PropertySymbol.tagName]) {
case 'INPUT':
return control.type !== 'hidden' ? control : null;
case 'BUTTON':
case 'METER':
case 'OUTPUT':
case 'PROGRESS':
case 'SELECT':
case 'TEXTAREA':
return control;
default:
return null;
}
}
}
return (this.querySelector('button,input:not([type="hidden"]),meter,output,progress,select,textarea'));
}
/**
* Returns the parent form element.
*
* @returns Form.
*/
get form() {
return this.control?.form || null;
}
/**
* @override
*/
[PropertySymbol.cloneNode](deep = false) {
return super[PropertySymbol.cloneNode](deep);
}
/**
* @override
*/
dispatchEvent(event) {
const returnValue = super.dispatchEvent(event);
if (!event[PropertySymbol.defaultPrevented] &&
event.type === 'click' &&
event.eventPhase === EventPhaseEnum.none &&
event instanceof MouseEvent) {
const control = this.control;
if (control && event.target !== control) {
control.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true }));
}
}
return returnValue;
}
}
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