dom/svg/SVGStyleElement.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 DOM_SVG_SVGSTYLEELEMENT_H_
   8 #define DOM_SVG_SVGSTYLEELEMENT_H_
   9
  10 #include "mozilla/Attributes.h"
  11 #include "mozilla/dom/LinkStyle.h"
  12 #include "SVGElement.h"
  13 #include "nsStubMutationObserver.h"
  14
  15 nsresult NS_NewSVGStyleElement(
  16     nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  17
  18 namespace mozilla::dom {
  19
  20 using SVGStyleElementBase = SVGElement;
  21
  22 class SVGStyleElement final : public SVGStyleElementBase,
  23                               public nsStubMutationObserver,
  24                               public LinkStyle {
  25  protected:
  26   friend nsresult(::NS_NewSVGStyleElement(
  27       nsIContent** aResult,
  28       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
  29   explicit SVGStyleElement(
  30       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  31   ~SVGStyleElement() = default;
  32
  33   JSObject* WrapNode(JSContext* aCx,
  34                      JS::Handle<JSObject*> aGivenProto) override;
  35
  36  public:
  37   NS_DECL_ISUPPORTS_INHERITED
  38
  39   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGStyleElement, SVGStyleElementBase)
  40
  41   // nsIContent
  42   nsresult BindToTree(BindContext&, nsINode& aParent) override;
  43   void UnbindFromTree(UnbindContext&) override;
  44   virtual void AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
  45                             const nsAttrValue* aValue,
  46                             const nsAttrValue* aOldValue,
  47                             nsIPrincipal* aMaybeScriptedPrincipal,
  48                             bool aNotify) override;
  49   virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
  50                               const nsAString& aValue,
  51                               nsIPrincipal* aMaybeScriptedPrincipal,
  52                               nsAttrValue& aResult) override;
  53
  54   nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  55
  56   // nsIMutationObserver
  57   NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
  58   NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
  59   NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
  60   NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
  61
  62   // WebIDL
  63   bool Disabled() const;
  64   void SetDisabled(bool aDisabled);
  65   void GetMedia(nsAString& aMedia);
  66   void SetMedia(const nsAString& aMedia, ErrorResult& rv);
  67   void GetType(nsAString& aType);
  68   void SetType(const nsAString& aType, ErrorResult& rv);
  69   void GetTitle(nsAString& aTitle);
  70   void SetTitle(const nsAString& aTitle, ErrorResult& rv);
  71
  72  protected:
  73   // Dummy init method to make the NS_IMPL_NS_NEW_SVG_ELEMENT and
  74   // NS_IMPL_ELEMENT_CLONE_WITH_INIT usable with this class. This should be
  75   // completely optimized away.
  76   inline nsresult Init() { return NS_OK; }
  77
  78   // LinkStyle overrides
  79   nsIContent& AsContent() final { return *this; }
  80   const LinkStyle* AsLinkStyle() const final { return this; }
  81   Maybe<SheetInfo> GetStyleSheetInfo() final;
  82
  83   /**
  84    * Common method to call from the various mutation observer methods.
  85    * aContent is a content node that's either the one that changed or its
  86    * parent; we should only respond to the change if aContent is non-anonymous.
  87    */
  88   void ContentChanged(nsIContent* aContent);
  89 };
  90
  91 }  // namespace mozilla::dom
  92
  93 #endif  // DOM_SVG_SVGSTYLEELEMENT_H_