dom/svg/SVGAnimatedClass.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_SVGANIMATEDCLASS_H_
   8 #define DOM_SVG_SVGANIMATEDCLASS_H_
   9
  10 #include "nsCycleCollectionParticipant.h"
  11 #include "mozilla/SVGAnimatedClassOrString.h"
  12 #include "mozilla/Attributes.h"
  13 #include "mozilla/SMILAttr.h"
  14 #include "mozilla/UniquePtr.h"
  15
  16 namespace mozilla {
  17
  18 class SMILValue;
  19
  20 namespace dom {
  21 class DOMSVGAnimatedString;
  22 class SVGElement;
  23 }  // namespace dom
  24
  25 class SVGAnimatedClass final : public SVGAnimatedClassOrString {
  26  public:
  27   using SVGElement = dom::SVGElement;
  28
  29   void Init() { mAnimVal = nullptr; }
  30
  31   void SetBaseValue(const nsAString& aValue, SVGElement* aSVGElement,
  32                     bool aDoSetAttr) override;
  33   void GetBaseValue(nsAString& aValue,
  34                     const SVGElement* aSVGElement) const override;
  35
  36   void SetAnimValue(const nsAString& aValue, SVGElement* aSVGElement);
  37   void GetAnimValue(nsAString& aResult,
  38                     const SVGElement* aSVGElement) const override;
  39   bool IsAnimated() const { return !!mAnimVal; }
  40
  41   UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);
  42
  43  private:
  44   UniquePtr<nsString> mAnimVal;
  45
  46  public:
  47   struct SMILString : public SMILAttr {
  48    public:
  49     SMILString(SVGAnimatedClass* aVal, SVGElement* aSVGElement)
  50         : mVal(aVal), mSVGElement(aSVGElement) {}
  51
  52     // These will stay alive because a SMILAttr only lives as long
  53     // as the Compositing step, and DOM elements don't get a chance to
  54     // die during that.
  55     SVGAnimatedClass* mVal;
  56     SVGElement* mSVGElement;
  57
  58     // SMILAttr methods
  59     nsresult ValueFromString(const nsAString& aStr,
  60                              const dom::SVGAnimationElement* aSrcElement,
  61                              SMILValue& aValue,
  62                              bool& aPreventCachingOfSandwich) const override;
  63     SMILValue GetBaseValue() const override;
  64     void ClearAnimValue() override;
  65     nsresult SetAnimValue(const SMILValue& aValue) override;
  66   };
  67 };
  68
  69 }  // namespace mozilla
  70
  71 #endif  // DOM_SVG_SVGANIMATEDCLASS_H_