/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef __NS_SVGSTRING_H__ #define __NS_SVGSTRING_H__ #include "nsAutoPtr.h" #include "nsError.h" #include "nsSVGElement.h" #include "mozilla/Attributes.h" #include "mozilla/dom/SVGAnimatedString.h" class nsSVGString { public: void Init(uint8_t aAttrEnum) { mAnimVal = nullptr; mAttrEnum = aAttrEnum; mIsBaseSet = false; } void SetBaseValue(const nsAString& aValue, nsSVGElement *aSVGElement, bool aDoSetAttr); void GetBaseValue(nsAString& aValue, const nsSVGElement *aSVGElement) const { aSVGElement->GetStringBaseValue(mAttrEnum, aValue); } void SetAnimValue(const nsAString& aValue, nsSVGElement *aSVGElement); void GetAnimValue(nsAString& aValue, const nsSVGElement *aSVGElement) const; // Returns true if the animated value of this string has been explicitly // set (either by animation, or by taking on the base value which has been // explicitly set by markup or a DOM call), false otherwise. // If this returns false, the animated value is still valid, that is, // useable, and represents the default base value of the attribute. bool IsExplicitlySet() const { return !!mAnimVal || mIsBaseSet; } already_AddRefed<mozilla::dom::SVGAnimatedString> ToDOMAnimatedString(nsSVGElement* aSVGElement); // Returns a new nsISMILAttr object that the caller must delete nsISMILAttr* ToSMILAttr(nsSVGElement *aSVGElement); private: nsAutoPtr<nsString> mAnimVal; uint8_t mAttrEnum; // element specified tracking for attribute bool mIsBaseSet; public: struct DOMAnimatedString final : public mozilla::dom::SVGAnimatedString { NS_DECL_CYCLE_COLLECTING_ISUPPORTS NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimatedString) DOMAnimatedString(nsSVGString* aVal, nsSVGElement* aSVGElement) : mozilla::dom::SVGAnimatedString(aSVGElement) , mVal(aVal) {} nsSVGString* mVal; // kept alive because it belongs to content void GetBaseVal(nsAString & aResult) override { mVal->GetBaseValue(aResult, mSVGElement); } void SetBaseVal(const nsAString & aValue) override { mVal->SetBaseValue(aValue, mSVGElement, true); } void GetAnimVal(nsAString & aResult) override { mSVGElement->FlushAnimations(); mVal->GetAnimValue(aResult, mSVGElement); } private: virtual ~DOMAnimatedString(); }; struct SMILString : public nsISMILAttr { public: SMILString(nsSVGString *aVal, nsSVGElement *aSVGElement) : mVal(aVal), mSVGElement(aSVGElement) {} // These will stay alive because a nsISMILAttr only lives as long // as the Compositing step, and DOM elements don't get a chance to // die during that. nsSVGString* mVal; nsSVGElement* mSVGElement; // nsISMILAttr methods virtual nsresult ValueFromString(const nsAString& aStr, const mozilla::dom::SVGAnimationElement *aSrcElement, nsSMILValue& aValue, bool& aPreventCachingOfSandwich) const override; virtual nsSMILValue GetBaseValue() const override; virtual void ClearAnimValue() override; virtual nsresult SetAnimValue(const nsSMILValue& aValue) override; }; }; #endif //__NS_SVGSTRING_H__