HTMLLabelElement-impl.js
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"use strict";
const HTMLElementImpl = require("./HTMLElement-impl").implementation;
const MouseEvent = require("../generated/MouseEvent");
const { domSymbolTree } = require("../helpers/internal-constants");
const NODE_TYPE = require("../node-type");
const { isLabelable, isDisabled } = require("../helpers/form-controls");
const { fireAnEvent } = require("../helpers/events");
function sendClickToAssociatedNode(node) {
fireAnEvent("click", node, MouseEvent, {
bubbles: true,
cancelable: true,
view: node.ownerDocument ? node.ownerDocument.defaultView : null,
screenX: 0,
screenY: 0,
clientX: 0,
clientY: 0,
button: 0,
detail: 1,
relatedTarget: null
});
}
class HTMLLabelElementImpl extends HTMLElementImpl {
constructor(globalObject, args, privateData) {
super(globalObject, args, privateData);
this._hasActivationBehavior = true;
}
get control() {
if (this.hasAttributeNS(null, "for")) {
const forValue = this.getAttributeNS(null, "for");
if (forValue === "") {
return null;
}
const root = this.getRootNode({});
for (const descendant of domSymbolTree.treeIterator(root)) {
if (descendant.nodeType === NODE_TYPE.ELEMENT_NODE &&
descendant.getAttributeNS(null, "id") === forValue) {
return isLabelable(descendant) ? descendant : null;
}
}
return null;
}
for (const descendant of domSymbolTree.treeIterator(this)) {
if (isLabelable(descendant)) {
return descendant;
}
}
return null;
}
get form() {
const node = this.control;
if (node) {
return node.form;
}
return null;
}
_activationBehavior() {
const node = this.control;
if (node && !isDisabled(node)) {
sendClickToAssociatedNode(node);
}
}
}
module.exports = {
implementation: HTMLLabelElementImpl
};