dom/svg/SVGSwitchElement.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_SVGSWITCHELEMENT_H_
   8 #define DOM_SVG_SVGSWITCHELEMENT_H_
   9
  10 #include "mozilla/dom/SVGGraphicsElement.h"
  11 #include "nsCOMPtr.h"
  12
  13 nsresult NS_NewSVGSwitchElement(
  14     nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  15
  16 namespace mozilla {
  17 class ErrorResult;
  18 namespace dom {
  19
  20 using SVGSwitchElementBase = SVGGraphicsElement;
  21
  22 class SVGSwitchElement final : public SVGSwitchElementBase {
  23  protected:
  24   friend nsresult(::NS_NewSVGSwitchElement(
  25       nsIContent** aResult,
  26       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
  27   explicit SVGSwitchElement(
  28       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  29   ~SVGSwitchElement() = default;
  30   JSObject* WrapNode(JSContext* aCx,
  31                      JS::Handle<JSObject*> aGivenProto) override;
  32
  33  public:
  34   NS_IMPL_FROMNODE_WITH_TAG(SVGSwitchElement, kNameSpaceID_SVG, svgSwitch)
  35
  36   nsIContent* GetActiveChild() const { return mActiveChild; }
  37   void MaybeInvalidate();
  38
  39   // interfaces:
  40
  41   NS_DECL_ISUPPORTS_INHERITED
  42   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGSwitchElement,
  43                                            SVGSwitchElementBase)
  44   // nsINode
  45   virtual void InsertChildBefore(nsIContent* aKid, nsIContent* aBeforeThis,
  46                                  bool aNotify, ErrorResult& aRv) override;
  47   void RemoveChildNode(nsIContent* aKid, bool aNotify) override;
  48
  49   // nsIContent
  50   nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  51
  52  private:
  53   void UpdateActiveChild() { mActiveChild = FindActiveChild(); }
  54   nsIContent* FindActiveChild() const;
  55
  56   // only this child will be displayed
  57   nsCOMPtr<nsIContent> mActiveChild;
  58 };
  59
  60 }  // namespace dom
  61 }  // namespace mozilla
  62
  63 #endif  // DOM_SVG_SVGSWITCHELEMENT_H_