HTMLOrSVGElement-impl.js
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"use strict";
const conversions = require("webidl-conversions");
const { isSummaryForParentDetails } = require("../helpers/details");
const focusing = require("../helpers/focusing");
const { HTML_NS, SVG_NS } = require("../helpers/namespaces");
const DOMStringMap = require("../generated/DOMStringMap");
const tabIndexReflectAllowedHTMLElements = new Set([
"a", "area", "button", "frame", "iframe",
"input", "object", "select", "textarea"
]);
class HTMLOrSVGElementImpl {
_initHTMLOrSVGElement() {
this._tabIndex = 0;
this._dataset = DOMStringMap.createImpl(this._globalObject, [], { element: this });
}
get dataset() {
return this._dataset;
}
// TODO this should be [Reflect]able if we added default value support to webidl2js's [Reflect]
get tabIndex() {
if (!this.hasAttributeNS(null, "tabindex")) {
if ((this.namespaceURI === HTML_NS && (tabIndexReflectAllowedHTMLElements.has(this._localName) ||
(this._localName === "summary" && isSummaryForParentDetails(this)))) ||
(this.namespaceURI === SVG_NS && this._localName === "a")) {
return 0;
}
return -1;
}
return conversions.long(this.getAttributeNS(null, "tabindex"));
}
set tabIndex(value) {
this.setAttributeNS(null, "tabindex", String(value));
}
focus() {
if (!focusing.isFocusableAreaElement(this)) {
return;
}
const previous = this._ownerDocument._lastFocusedElement;
if (previous === this) {
return;
}
focusing.fireFocusEventWithTargetAdjustment("blur", previous, this);
this._ownerDocument._lastFocusedElement = this;
focusing.fireFocusEventWithTargetAdjustment("focus", this, previous);
if (this._ownerDocument._defaultView._frameElement) {
this._ownerDocument._defaultView._frameElement.focus();
}
}
blur() {
if (this._ownerDocument._lastFocusedElement !== this || !focusing.isFocusableAreaElement(this)) {
return;
}
focusing.fireFocusEventWithTargetAdjustment("blur", this, this._ownerDocument);
this._ownerDocument._lastFocusedElement = null;
focusing.fireFocusEventWithTargetAdjustment("focus", this._ownerDocument, this);
}
}
exports.implementation = HTMLOrSVGElementImpl;