// https://html.spec.whatwg.org/multipage/semantics.html#htmlelement
[Exposed=Window]
interface HTMLElement : Element {

    [HTMLConstructor] constructor();

    // metadata attributes
    [Reflect, CEReactions] attribute DOMString title;
    [Reflect, CEReactions] attribute DOMString lang;
    [CEReactions] attribute boolean translate;
    [CEReactions] attribute DOMString dir;

    // user interaction
    [CEReactions] attribute (boolean or unrestricted double or DOMString)? hidden;
    [Reflect, CEReactions] attribute boolean inert;
    undefined click();
    [Reflect=accesskey, CEReactions] attribute DOMString accessKey;
    readonly attribute DOMString accessKeyLabel;
    [CEReactions] attribute boolean draggable;
    [CEReactions] attribute boolean spellcheck;
    [CEReactions] attribute DOMString writingSuggestions;
    [CEReactions] attribute DOMString autocapitalize;
    [CEReactions] attribute boolean autocorrect;

    [LegacyNullToEmptyString, CEReactions] attribute Utf16DOMString innerText;
    [LegacyNullToEmptyString, CEReactions] attribute Utf16DOMString outerText;

    ElementInternals attachInternals();

    // The popover API
    [ImplementedAs=show_popover_for_bindings] undefined showPopover(optional ShowPopoverOptions options = {});
    [ImplementedAs=hide_popover_for_bindings] undefined hidePopover();
    boolean togglePopover(optional (TogglePopoverOptions or boolean) options = {});
    [CEReactions] attribute DOMString? popover;
    
    // FIXME: Should be `[CEReactions, Reflect, ReflectRange=(0, 8)]`
    [CEReactions, Reflect, ReflectRange=(0, 8)] attribute unsigned long headingOffset;
    [CEReactions, Reflect] attribute boolean headingReset;

    // https://drafts.csswg.org/cssom-view/#extensions-to-the-htmlelement-interface
    readonly attribute Element? scrollParent;
    readonly attribute Element? offsetParent;
    readonly attribute long offsetTop;
    readonly attribute long offsetLeft;
    readonly attribute long offsetWidth;
    readonly attribute long offsetHeight;

};

// https://html.spec.whatwg.org/multipage/dom.html#showpopoveroptions
dictionary ShowPopoverOptions {
    HTMLElement source;
};

// https://html.spec.whatwg.org/multipage/dom.html#togglepopoveroptions
dictionary TogglePopoverOptions : ShowPopoverOptions {
    boolean force;
};

HTMLElement includes GlobalEventHandlers;
HTMLElement includes ElementContentEditable;
HTMLElement includes HTMLOrSVGOrMathMLElement;

// https://html.spec.whatwg.org/multipage/interaction.html#attr-enterkeyhint
enum EnterKeyHint {
    "enter",
    "done",
    "go",
    "next",
    "previous",
    "search",
    "send"
};

// https://html.spec.whatwg.org/multipage/interaction.html#attr-inputmode
enum InputMode {
    "none",
    "text",
    "tel",
    "url",
    "email",
    "numeric",
    "decimal",
    "search"
};

// https://html.spec.whatwg.org/multipage/interaction.html#elementcontenteditable
interface mixin ElementContentEditable {
    [CEReactions] attribute DOMString contentEditable;
    [Reflect=enterkeyhint, Enumerated=EnterKeyHint, CEReactions] attribute DOMString enterKeyHint;
    readonly attribute boolean isContentEditable;
    [Reflect=inputmode, Enumerated=InputMode, CEReactions] attribute DOMString inputMode;
};

HTMLElement includes ElementCSSInlineStyle;
