/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_HTMLHeadingElement_h
#define mozilla_dom_HTMLHeadingElement_h
#include <cstdint>
#include "nsGenericHTMLElement.h"
namespace mozilla::dom {
class HTMLHeadingElement final :
public nsGenericHTMLElement {
public:
explicit HTMLHeadingElement(
already_AddRefed<mozilla::dom::NodeInfo> aNodeInfo)
: nsGenericHTMLElement(std::move(aNodeInfo)) {
MOZ_ASSERT(IsHTMLHeadingElement());
UpdateLevel(false);
}
nsresult BindToTree(BindContext& aContext, nsINode& aParent) override {
nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
UpdateLevel(
true);
return rv;
}
bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) override;
NS_IMETHOD_(
bool) IsAttributeMapped(
const nsAtom* aAttribute)
const override;
nsMapRuleToAttributesFunc GetAttributeMappingFunction()
const override;
nsresult Clone(dom::NodeInfo*, nsINode** aResult)
const override;
void SetAlign(
const nsAString& aAlign, ErrorResult& aError) {
return SetHTMLAttr(nsGkAtoms::align, aAlign, aError);
}
void GetAlign(DOMString& aAlign)
const {
return GetHTMLAttr(nsGkAtoms::align, aAlign);
}
// https://html.spec.whatwg.org/#get-an-element's-computed-heading-level
uint32_t ComputedLevel()
const;
// https://html.spec.whatwg.org/#get-an-element's-computed-heading-offset
uint32_t GetComputedHeadingOffset(uint32_t aMax)
const;
void UpdateLevel(
bool aNotify);
NS_IMPL_FROMNODE_HELPER(HTMLHeadingElement, IsHTMLHeadingElement())
protected:
virtual ~HTMLHeadingElement();
JSObject* WrapNode(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
private:
static void MapAttributesIntoRule(MappedDeclarationsBuilder&);
};
}
// namespace mozilla::dom
#endif // mozilla_dom_HTMLHeadingElement_h