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 {
  14 namespace dom {
  15
  16 class HTMLHeadingElement final : public nsGenericHTMLElement {
  17  public:
  18   explicit HTMLHeadingElement(
  19       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  20       : nsGenericHTMLElement(std::move(aNodeInfo)) {
  21     MOZ_ASSERT(IsHTMLHeadingElement());
  22   }
  23
  24   bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
  25                       const nsAString& aValue,
  26                       nsIPrincipal* aMaybeScriptedPrincipal,
  27                       nsAttrValue& aResult) override;
  28   NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;
  29   nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
  30   nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  31
  32   void SetAlign(const nsAString& aAlign, ErrorResult& aError) {
  33     return SetHTMLAttr(nsGkAtoms::align, aAlign, aError);
  34   }
  35   void GetAlign(DOMString& aAlign) const {
  36     return GetHTMLAttr(nsGkAtoms::align, aAlign);
  37   }
  38
  39   int32_t AccessibilityLevel() const {
  40     nsAtom* name = NodeInfo()->NameAtom();
  41     if (name == nsGkAtoms::h1) {
  42       return 1;
  43     }
  44     if (name == nsGkAtoms::h2) {
  45       return 2;
  46     }
  47     if (name == nsGkAtoms::h3) {
  48       return 3;
  49     }
  50     if (name == nsGkAtoms::h4) {
  51       return 4;
  52     }
  53     if (name == nsGkAtoms::h5) {
  54       return 5;
  55     }
  56     MOZ_ASSERT(name == nsGkAtoms::h6);
  57     return 6;
  58   }
  59
  60   NS_IMPL_FROMNODE_HELPER(HTMLHeadingElement, IsHTMLHeadingElement())
  61
  62  protected:
  63   virtual ~HTMLHeadingElement();
  64
  65   JSObject* WrapNode(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
  66
  67  private:
  68   static void MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
  69                                     MappedDeclarations&);
  70 };
  71
  72 }  // namespace dom
  73 }  // namespace mozilla
  74
  75 #endif  // mozilla_dom_HTMLHeadingElement_h