dom/svg/nsSVGClass.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 __NS_SVGCLASS_H__
   8 #define __NS_SVGCLASS_H__
   9
  10 #include "nsAutoPtr.h"
  11 #include "nsCycleCollectionParticipant.h"
  12 #include "nsError.h"
  13 #include "nsISMILAttr.h"
  14 #include "nsString.h"
  15 #include "mozilla/Attributes.h"
  16 #include "mozilla/UniquePtr.h"
  17
  18 class nsSVGElement;
  19
  20 namespace mozilla {
  21 namespace dom {
  22 class SVGAnimatedString;
  23 } // namespace dom
  24 } // namespace mozilla
  25
  26 class nsSVGClass
  27 {
  28
  29 public:
  30   void Init() {
  31     mAnimVal = nullptr;
  32   }
  33
  34   void SetBaseValue(const nsAString& aValue,
  35                     nsSVGElement *aSVGElement,
  36                     bool aDoSetAttr);
  37   void GetBaseValue(nsAString& aValue, const nsSVGElement *aSVGElement) const;
  38
  39   void SetAnimValue(const nsAString& aValue, nsSVGElement *aSVGElement);
  40   void GetAnimValue(nsAString& aValue, const nsSVGElement *aSVGElement) const;
  41   bool IsAnimated() const
  42     { return !!mAnimVal; }
  43
  44   already_AddRefed<mozilla::dom::SVGAnimatedString>
  45   ToDOMAnimatedString(nsSVGElement* aSVGElement);
  46
  47   mozilla::UniquePtr<nsISMILAttr> ToSMILAttr(nsSVGElement *aSVGElement);
  48
  49 private:
  50
  51   nsAutoPtr<nsString> mAnimVal;
  52
  53 public:
  54   struct SMILString : public nsISMILAttr
  55   {
  56   public:
  57     SMILString(nsSVGClass *aVal, nsSVGElement *aSVGElement)
  58       : mVal(aVal), mSVGElement(aSVGElement) {}
  59
  60     // These will stay alive because a nsISMILAttr only lives as long
  61     // as the Compositing step, and DOM elements don't get a chance to
  62     // die during that.
  63     nsSVGClass* mVal;
  64     nsSVGElement* mSVGElement;
  65
  66     // nsISMILAttr methods
  67     virtual nsresult ValueFromString(const nsAString& aStr,
  68                                      const mozilla::dom::SVGAnimationElement *aSrcElement,
  69                                      nsSMILValue& aValue,
  70                                      bool& aPreventCachingOfSandwich) const override;
  71     virtual nsSMILValue GetBaseValue() const override;
  72     virtual void ClearAnimValue() override;
  73     virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
  74   };
  75 };
  76 #endif //__NS_SVGCLASS_H__