dom/html/HTMLHeadingElement.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_HTMLHeadingElement_h
   8 #define mozilla_dom_HTMLHeadingElement_h
   9
  10 #include "mozilla/Attributes.h"
  11 #include "nsGenericHTMLElement.h"
  12
  13 namespace mozilla::dom {
  14
  15 class HTMLHeadingElement final : public nsGenericHTMLElement {
  16  public:
  17   explicit HTMLHeadingElement(
  18       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  19       : nsGenericHTMLElement(std::move(aNodeInfo)) {
  20     MOZ_ASSERT(IsHTMLHeadingElement());
  21   }
  22
  23   bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
  24                       const nsAString& aValue,
  25                       nsIPrincipal* aMaybeScriptedPrincipal,
  26                       nsAttrValue& aResult) override;
  27   NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;
  28   nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
  29   nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  30
  31   void SetAlign(const nsAString& aAlign, ErrorResult& aError) {
  32     return SetHTMLAttr(nsGkAtoms::align, aAlign, aError);
  33   }
  34   void GetAlign(DOMString& aAlign) const {
  35     return GetHTMLAttr(nsGkAtoms::align, aAlign);
  36   }
  37
  38   int32_t AccessibilityLevel() const {
  39     nsAtom* name = NodeInfo()->NameAtom();
  40     if (name == nsGkAtoms::h1) {
  41       return 1;
  42     }
  43     if (name == nsGkAtoms::h2) {
  44       return 2;
  45     }
  46     if (name == nsGkAtoms::h3) {
  47       return 3;
  48     }
  49     if (name == nsGkAtoms::h4) {
  50       return 4;
  51     }
  52     if (name == nsGkAtoms::h5) {
  53       return 5;
  54     }
  55     MOZ_ASSERT(name == nsGkAtoms::h6);
  56     return 6;
  57   }
  58
  59   NS_IMPL_FROMNODE_HELPER(HTMLHeadingElement, IsHTMLHeadingElement())
  60
  61  protected:
  62   virtual ~HTMLHeadingElement();
  63
  64   JSObject* WrapNode(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
  65
  66  private:
  67   static void MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
  68                                     MappedDeclarations&);
  69 };
  70
  71 }  // namespace mozilla::dom
  72
  73 #endif  // mozilla_dom_HTMLHeadingElement_h